Bug Summary

File:build-scan/../src/nspawn/nspawn.c
Warning:line 3078, column 17
Value stored to 'pid_socket' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name nspawn.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -menable-no-infs -menable-no-nans -menable-unsafe-fp-math -fno-signed-zeros -mreassociate -freciprocal-math -fdenormal-fp-math=preserve-sign,preserve-sign -ffp-contract=fast -fno-rounding-math -ffast-math -ffinite-math-only -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/12.0.0 -include config.h -I systemd-nspawn.p -I . -I .. -I src/basic -I ../src/basic -I src/shared -I ../src/shared -I src/systemd -I ../src/systemd -I src/journal -I ../src/journal -I src/journal-remote -I ../src/journal-remote -I src/nspawn -I ../src/nspawn -I src/resolve -I ../src/resolve -I src/timesync -I ../src/timesync -I ../src/time-wait-sync -I src/login -I ../src/login -I src/udev -I ../src/udev -I src/libudev -I ../src/libudev -I src/core -I ../src/core -I ../src/libsystemd/sd-bus -I ../src/libsystemd/sd-device -I ../src/libsystemd/sd-hwdb -I ../src/libsystemd/sd-id128 -I ../src/libsystemd/sd-netlink -I ../src/libsystemd/sd-network -I src/libsystemd-network -I ../src/libsystemd-network -I /usr/include/blkid -D _FILE_OFFSET_BITS=64 -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/12.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wwrite-strings -Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result -Wno-format-signedness -Wno-error=nonnull -std=gnu99 -fconst-strings -fdebug-compilation-dir /home/mrc0mmand/repos/@redhat-plumbers/systemd-rhel8/build-scan -ferror-limit 19 -fvisibility hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -analyzer-output=html -faddrsig -o /tmp/scan-build-2021-07-16-221226-1465241-1 -x c ../src/nspawn/nspawn.c
1/* SPDX-License-Identifier: LGPL-2.1+ */
2
3#if HAVE_BLKID1
4#include <blkid.h>
5#endif
6#include <errno(*__errno_location ()).h>
7#include <getopt.h>
8#include <grp.h>
9#include <linux1/loop.h>
10#include <pwd.h>
11#include <sched.h>
12#if HAVE_SELINUX1
13#include <selinux/selinux.h>
14#endif
15#include <signal.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <sys/file.h>
20#include <sys/mount.h>
21#include <sys/personality.h>
22#include <sys/prctl.h>
23#include <sys/types.h>
24#include <sys/wait.h>
25#include <unistd.h>
26
27#include "sd-bus.h"
28#include "sd-daemon.h"
29#include "sd-id128.h"
30
31#include "alloc-util.h"
32#include "barrier.h"
33#include "base-filesystem.h"
34#include "blkid-util.h"
35#include "btrfs-util.h"
36#include "bus-error.h"
37#include "bus-util.h"
38#include "cap-list.h"
39#include "capability-util.h"
40#include "cgroup-util.h"
41#include "copy.h"
42#include "cpu-set-util.h"
43#include "dev-setup.h"
44#include "dissect-image.h"
45#include "env-util.h"
46#include "fd-util.h"
47#include "fdset.h"
48#include "fileio.h"
49#include "format-util.h"
50#include "fs-util.h"
51#include "gpt.h"
52#include "hexdecoct.h"
53#include "hostname-util.h"
54#include "id128-util.h"
55#include "log.h"
56#include "loop-util.h"
57#include "loopback-setup.h"
58#include "machine-image.h"
59#include "macro.h"
60#include "missing.h"
61#include "mkdir.h"
62#include "mount-util.h"
63#include "netlink-util.h"
64#include "nspawn-cgroup.h"
65#include "nspawn-def.h"
66#include "nspawn-expose-ports.h"
67#include "nspawn-mount.h"
68#include "nspawn-network.h"
69#include "nspawn-patch-uid.h"
70#include "nspawn-register.h"
71#include "nspawn-seccomp.h"
72#include "nspawn-settings.h"
73#include "nspawn-setuid.h"
74#include "nspawn-stub-pid1.h"
75#include "os-util.h"
76#include "pager.h"
77#include "parse-util.h"
78#include "path-util.h"
79#include "process-util.h"
80#include "ptyfwd.h"
81#include "random-util.h"
82#include "raw-clone.h"
83#include "rlimit-util.h"
84#include "rm-rf.h"
85#include "selinux-util.h"
86#include "signal-util.h"
87#include "socket-util.h"
88#include "stat-util.h"
89#include "stdio-util.h"
90#include "string-table.h"
91#include "string-util.h"
92#include "strv.h"
93#include "terminal-util.h"
94#include "udev-util.h"
95#include "umask-util.h"
96#include "user-util.h"
97#include "util.h"
98
99#if HAVE_SPLIT_USR0
100#define STATIC_RESOLV_CONF"/usr/lib/systemd/resolv.conf" "/lib/systemd/resolv.conf"
101#else
102#define STATIC_RESOLV_CONF"/usr/lib/systemd/resolv.conf" "/usr/lib/systemd/resolv.conf"
103#endif
104
105/* nspawn is listening on the socket at the path in the constant nspawn_notify_socket_path
106 * nspawn_notify_socket_path is relative to the container
107 * the init process in the container pid can send messages to nspawn following the sd_notify(3) protocol */
108#define NSPAWN_NOTIFY_SOCKET_PATH"/run/systemd/nspawn/notify" "/run/systemd/nspawn/notify"
109
110#define EXIT_FORCE_RESTART133 133
111
112typedef enum ContainerStatus {
113 CONTAINER_TERMINATED,
114 CONTAINER_REBOOTED
115} ContainerStatus;
116
117static char *arg_directory = NULL((void*)0);
118static char *arg_template = NULL((void*)0);
119static char *arg_chdir = NULL((void*)0);
120static char *arg_pivot_root_new = NULL((void*)0);
121static char *arg_pivot_root_old = NULL((void*)0);
122static char *arg_user = NULL((void*)0);
123static sd_id128_t arg_uuid = {};
124static char *arg_machine = NULL((void*)0); /* The name used by the host to refer to this */
125static char *arg_hostname = NULL((void*)0); /* The name the payload sees by default */
126static const char *arg_selinux_context = NULL((void*)0);
127static const char *arg_selinux_apifs_context = NULL((void*)0);
128static const char *arg_slice = NULL((void*)0);
129static bool_Bool arg_private_network = false0;
130static bool_Bool arg_read_only = false0;
131static StartMode arg_start_mode = START_PID1;
132static bool_Bool arg_ephemeral = false0;
133static LinkJournal arg_link_journal = LINK_AUTO;
134static bool_Bool arg_link_journal_try = false0;
135static uint64_t arg_caps_retain =
136 (1ULL << CAP_AUDIT_CONTROL30) |
137 (1ULL << CAP_AUDIT_WRITE29) |
138 (1ULL << CAP_CHOWN0) |
139 (1ULL << CAP_DAC_OVERRIDE1) |
140 (1ULL << CAP_DAC_READ_SEARCH2) |
141 (1ULL << CAP_FOWNER3) |
142 (1ULL << CAP_FSETID4) |
143 (1ULL << CAP_IPC_OWNER15) |
144 (1ULL << CAP_KILL5) |
145 (1ULL << CAP_LEASE28) |
146 (1ULL << CAP_LINUX_IMMUTABLE9) |
147 (1ULL << CAP_MKNOD27) |
148 (1ULL << CAP_NET_BIND_SERVICE10) |
149 (1ULL << CAP_NET_BROADCAST11) |
150 (1ULL << CAP_NET_RAW13) |
151 (1ULL << CAP_SETFCAP31) |
152 (1ULL << CAP_SETGID6) |
153 (1ULL << CAP_SETPCAP8) |
154 (1ULL << CAP_SETUID7) |
155 (1ULL << CAP_SYS_ADMIN21) |
156 (1ULL << CAP_SYS_BOOT22) |
157 (1ULL << CAP_SYS_CHROOT18) |
158 (1ULL << CAP_SYS_NICE23) |
159 (1ULL << CAP_SYS_PTRACE19) |
160 (1ULL << CAP_SYS_RESOURCE24) |
161 (1ULL << CAP_SYS_TTY_CONFIG26);
162static CustomMount *arg_custom_mounts = NULL((void*)0);
163static size_t arg_n_custom_mounts = 0;
164static char **arg_setenv = NULL((void*)0);
165static bool_Bool arg_quiet = false0;
166static bool_Bool arg_register = true1;
167static bool_Bool arg_keep_unit = false0;
168static char **arg_network_interfaces = NULL((void*)0);
169static char **arg_network_macvlan = NULL((void*)0);
170static char **arg_network_ipvlan = NULL((void*)0);
171static bool_Bool arg_network_veth = false0;
172static char **arg_network_veth_extra = NULL((void*)0);
173static char *arg_network_bridge = NULL((void*)0);
174static char *arg_network_zone = NULL((void*)0);
175static char *arg_network_namespace_path = NULL((void*)0);
176static unsigned long arg_personality = PERSONALITY_INVALID0xffffffffLU;
177static char *arg_image = NULL((void*)0);
178static VolatileMode arg_volatile_mode = VOLATILE_NO;
179static ExposePort *arg_expose_ports = NULL((void*)0);
180static char **arg_property = NULL((void*)0);
181static UserNamespaceMode arg_userns_mode = USER_NAMESPACE_NO;
182static uid_t arg_uid_shift = UID_INVALID((uid_t) -1), arg_uid_range = 0x10000U;
183static bool_Bool arg_userns_chown = false0;
184static int arg_kill_signal = 0;
185static CGroupUnified arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_UNKNOWN;
186static SettingsMask arg_settings_mask = 0;
187static int arg_settings_trusted = -1;
188static char **arg_parameters = NULL((void*)0);
189static const char *arg_container_service_name = "systemd-nspawn";
190static bool_Bool arg_notify_ready = false0;
191static bool_Bool arg_use_cgns = true1;
192static unsigned long arg_clone_ns_flags = CLONE_NEWIPC0x08000000|CLONE_NEWPID0x20000000|CLONE_NEWUTS0x04000000;
193static MountSettingsMask arg_mount_settings = MOUNT_APPLY_APIVFS_RO;
194static void *arg_root_hash = NULL((void*)0);
195static size_t arg_root_hash_size = 0;
196static char **arg_syscall_whitelist = NULL((void*)0);
197static char **arg_syscall_blacklist = NULL((void*)0);
198static struct rlimit *arg_rlimit[_RLIMIT_MAX(__RLIMIT_RTTIME+1 > __RLIMIT_NLIMITS ? __RLIMIT_RTTIME+1 :
__RLIMIT_NLIMITS)
] = {};
199static bool_Bool arg_no_new_privileges = false0;
200static int arg_oom_score_adjust = 0;
201static bool_Bool arg_oom_score_adjust_set = false0;
202static CPUSet arg_cpu_set = {};
203static ResolvConfMode arg_resolv_conf = RESOLV_CONF_AUTO;
204static TimezoneMode arg_timezone = TIMEZONE_AUTO;
205
206static void help(void) {
207 (void) pager_open(false0, false0);
208
209 printf("%s [OPTIONS...] [PATH] [ARGUMENTS...]\n\n"
210 "Spawn a minimal namespace container for debugging, testing and building.\n\n"
211 " -h --help Show this help\n"
212 " --version Print version string\n"
213 " -q --quiet Do not show status information\n"
214 " -D --directory=PATH Root directory for the container\n"
215 " --template=PATH Initialize root directory from template directory,\n"
216 " if missing\n"
217 " -x --ephemeral Run container with snapshot of root directory, and\n"
218 " remove it after exit\n"
219 " -i --image=PATH File system device or disk image for the container\n"
220 " --root-hash=HASH Specify verity root hash\n"
221 " -a --as-pid2 Maintain a stub init as PID1, invoke binary as PID2\n"
222 " -b --boot Boot up full system (i.e. invoke init)\n"
223 " --chdir=PATH Set working directory in the container\n"
224 " --pivot-root=PATH[:PATH]\n"
225 " Pivot root to given directory in the container\n"
226 " -u --user=USER Run the command under specified user or uid\n"
227 " -M --machine=NAME Set the machine name for the container\n"
228 " --hostname=NAME Override the hostname for the container\n"
229 " --uuid=UUID Set a specific machine UUID for the container\n"
230 " -S --slice=SLICE Place the container in the specified slice\n"
231 " --property=NAME=VALUE Set scope unit property\n"
232 " -U --private-users=pick Run within user namespace, autoselect UID/GID range\n"
233 " --private-users[=UIDBASE[:NUIDS]]\n"
234 " Similar, but with user configured UID/GID range\n"
235 " --private-users-chown Adjust OS tree ownership to private UID/GID range\n"
236 " --private-network Disable network in container\n"
237 " --network-interface=INTERFACE\n"
238 " Assign an existing network interface to the\n"
239 " container\n"
240 " --network-macvlan=INTERFACE\n"
241 " Create a macvlan network interface based on an\n"
242 " existing network interface to the container\n"
243 " --network-ipvlan=INTERFACE\n"
244 " Create a ipvlan network interface based on an\n"
245 " existing network interface to the container\n"
246 " -n --network-veth Add a virtual Ethernet connection between host\n"
247 " and container\n"
248 " --network-veth-extra=HOSTIF[:CONTAINERIF]\n"
249 " Add an additional virtual Ethernet link between\n"
250 " host and container\n"
251 " --network-bridge=INTERFACE\n"
252 " Add a virtual Ethernet connection to the container\n"
253 " and attach it to an existing bridge on the host\n"
254 " --network-zone=NAME Similar, but attach the new interface to an\n"
255 " an automatically managed bridge interface\n"
256 " --network-namespace-path=PATH\n"
257 " Set network namespace to the one represented by\n"
258 " the specified kernel namespace file node\n"
259 " -p --port=[PROTOCOL:]HOSTPORT[:CONTAINERPORT]\n"
260 " Expose a container IP port on the host\n"
261 " -Z --selinux-context=SECLABEL\n"
262 " Set the SELinux security context to be used by\n"
263 " processes in the container\n"
264 " -L --selinux-apifs-context=SECLABEL\n"
265 " Set the SELinux security context to be used by\n"
266 " API/tmpfs file systems in the container\n"
267 " --capability=CAP In addition to the default, retain specified\n"
268 " capability\n"
269 " --drop-capability=CAP Drop the specified capability from the default set\n"
270 " --system-call-filter=LIST|~LIST\n"
271 " Permit/prohibit specific system calls\n"
272 " --rlimit=NAME=LIMIT Set a resource limit for the payload\n"
273 " --oom-score-adjust=VALUE\n"
274 " Adjust the OOM score value for the payload\n"
275 " --cpu-affinity=CPUS Adjust the CPU affinity of the container\n"
276 " --kill-signal=SIGNAL Select signal to use for shutting down PID 1\n"
277 " --link-journal=MODE Link up guest journal, one of no, auto, guest, \n"
278 " host, try-guest, try-host\n"
279 " -j Equivalent to --link-journal=try-guest\n"
280 " --resolv-conf=MODE Select mode of /etc/resolv.conf initialization\n"
281 " --timezone=MODE Select mode of /etc/localtime initialization\n"
282 " --read-only Mount the root directory read-only\n"
283 " --bind=PATH[:PATH[:OPTIONS]]\n"
284 " Bind mount a file or directory from the host into\n"
285 " the container\n"
286 " --bind-ro=PATH[:PATH[:OPTIONS]\n"
287 " Similar, but creates a read-only bind mount\n"
288 " --tmpfs=PATH:[OPTIONS] Mount an empty tmpfs to the specified directory\n"
289 " --overlay=PATH[:PATH...]:PATH\n"
290 " Create an overlay mount from the host to \n"
291 " the container\n"
292 " --overlay-ro=PATH[:PATH...]:PATH\n"
293 " Similar, but creates a read-only overlay mount\n"
294 " -E --setenv=NAME=VALUE Pass an environment variable to PID 1\n"
295 " --register=BOOLEAN Register container as machine\n"
296 " --keep-unit Do not register a scope for the machine, reuse\n"
297 " the service unit nspawn is running in\n"
298 " --volatile[=MODE] Run the system in volatile mode\n"
299 " --settings=BOOLEAN Load additional settings from .nspawn file\n"
300 " --notify-ready=BOOLEAN Receive notifications from the child init process\n"
301 , program_invocation_short_name);
302}
303
304static int custom_mount_check_all(void) {
305 size_t i;
306
307 for (i = 0; i < arg_n_custom_mounts; i++) {
308 CustomMount *m = &arg_custom_mounts[i];
309
310 if (path_equal(m->destination, "/") && arg_userns_mode != USER_NAMESPACE_NO) {
311
312 if (arg_userns_chown) {
313 log_error("--private-users-chown may not be combined with custom root mounts.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 313, __func__, "--private-users-chown may not be combined with custom root mounts."
) : -abs(_e); })
;
314 return -EINVAL22;
315 } else if (arg_uid_shift == UID_INVALID((uid_t) -1)) {
316 log_error("--private-users with automatic UID shift may not be combined with custom root mounts.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 316, __func__, "--private-users with automatic UID shift may not be combined with custom root mounts."
) : -abs(_e); })
;
317 return -EINVAL22;
318 }
319 }
320 }
321
322 return 0;
323}
324
325static int detect_unified_cgroup_hierarchy_from_environment(void) {
326 const char *e;
327 int r;
328
329 /* Allow the user to control whether the unified hierarchy is used */
330 e = getenv("UNIFIED_CGROUP_HIERARCHY");
331 if (e) {
332 r = parse_boolean(e);
333 if (r < 0)
334 return log_error_errno(r, "Failed to parse $UNIFIED_CGROUP_HIERARCHY.")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 334, __func__, "Failed to parse $UNIFIED_CGROUP_HIERARCHY."
) : -abs(_e); })
;
335 if (r > 0)
336 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_ALL;
337 else
338 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_NONE;
339 }
340
341 return 0;
342}
343
344static int detect_unified_cgroup_hierarchy_from_image(const char *directory) {
345 int r;
346
347 /* Let's inherit the mode to use from the host system, but let's take into consideration what systemd in the
348 * image actually supports. */
349 r = cg_all_unified();
350 if (r < 0)
351 return log_error_errno(r, "Failed to determine whether we are in all unified mode.")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 351, __func__, "Failed to determine whether we are in all unified mode."
) : -abs(_e); })
;
352 if (r > 0) {
353 /* Unified cgroup hierarchy support was added in 230. Unfortunately the detection
354 * routine only detects 231, so we'll have a false negative here for 230. */
355 r = systemd_installation_has_version(directory, 230);
356 if (r < 0)
357 return log_error_errno(r, "Failed to determine systemd version in container: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 357, __func__, "Failed to determine systemd version in container: %m"
) : -abs(_e); })
;
358 if (r > 0)
359 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_ALL;
360 else
361 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_NONE;
362 } else if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER"_systemd") > 0) {
363 /* Mixed cgroup hierarchy support was added in 233 */
364 r = systemd_installation_has_version(directory, 233);
365 if (r < 0)
366 return log_error_errno(r, "Failed to determine systemd version in container: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 366, __func__, "Failed to determine systemd version in container: %m"
) : -abs(_e); })
;
367 if (r > 0)
368 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_SYSTEMD;
369 else
370 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_NONE;
371 } else
372 arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_NONE;
373
374 log_debug("Using %s hierarchy for container.",({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 376, __func__, "Using %s hierarchy for container."
, arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_NONE ? "legacy"
: arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_SYSTEMD ? "hybrid"
: "unified") : -abs(_e); })
375 arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_NONE ? "legacy" :({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 376, __func__, "Using %s hierarchy for container."
, arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_NONE ? "legacy"
: arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_SYSTEMD ? "hybrid"
: "unified") : -abs(_e); })
376 arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_SYSTEMD ? "hybrid" : "unified")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 376, __func__, "Using %s hierarchy for container."
, arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_NONE ? "legacy"
: arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_SYSTEMD ? "hybrid"
: "unified") : -abs(_e); })
;
377
378 return 0;
379}
380
381static void parse_share_ns_env(const char *name, unsigned long ns_flag) {
382 int r;
383
384 r = getenv_bool(name);
385 if (r == -ENXIO6)
386 return;
387 if (r < 0)
388 log_warning_errno(r, "Failed to parse %s from environment, defaulting to false.", name)({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 388, __func__, "Failed to parse %s from environment, defaulting to false."
, name) : -abs(_e); })
;
389 arg_clone_ns_flags = (arg_clone_ns_flags & ~ns_flag) | (r > 0 ? 0 : ns_flag);
390}
391
392static void parse_mount_settings_env(void) {
393 int r;
394 const char *e;
395
396 e = getenv("SYSTEMD_NSPAWN_API_VFS_WRITABLE");
397 if (!e)
398 return;
399
400 if (streq(e, "network")(strcmp((e),("network")) == 0)) {
401 arg_mount_settings |= MOUNT_APPLY_APIVFS_RO|MOUNT_APPLY_APIVFS_NETNS;
402 return;
403 }
404
405 r = parse_boolean(e);
406 if (r < 0) {
407 log_warning_errno(r, "Failed to parse SYSTEMD_NSPAWN_API_VFS_WRITABLE from environment, ignoring.")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 407, __func__, "Failed to parse SYSTEMD_NSPAWN_API_VFS_WRITABLE from environment, ignoring."
) : -abs(_e); })
;
408 return;
409 }
410
411 SET_FLAG(arg_mount_settings, MOUNT_APPLY_APIVFS_RO, r == 0)(arg_mount_settings) = (r == 0) ? ((arg_mount_settings) | (MOUNT_APPLY_APIVFS_RO
)) : ((arg_mount_settings) & ~(MOUNT_APPLY_APIVFS_RO))
;
412 SET_FLAG(arg_mount_settings, MOUNT_APPLY_APIVFS_NETNS, false)(arg_mount_settings) = (0) ? ((arg_mount_settings) | (MOUNT_APPLY_APIVFS_NETNS
)) : ((arg_mount_settings) & ~(MOUNT_APPLY_APIVFS_NETNS))
;
413}
414
415static int parse_argv(int argc, char *argv[]) {
416 enum {
417 ARG_VERSION = 0x100,
418 ARG_PRIVATE_NETWORK,
419 ARG_UUID,
420 ARG_READ_ONLY,
421 ARG_CAPABILITY,
422 ARG_DROP_CAPABILITY,
423 ARG_LINK_JOURNAL,
424 ARG_BIND,
425 ARG_BIND_RO,
426 ARG_TMPFS,
427 ARG_OVERLAY,
428 ARG_OVERLAY_RO,
429 ARG_SHARE_SYSTEM,
430 ARG_REGISTER,
431 ARG_KEEP_UNIT,
432 ARG_NETWORK_INTERFACE,
433 ARG_NETWORK_MACVLAN,
434 ARG_NETWORK_IPVLAN,
435 ARG_NETWORK_BRIDGE,
436 ARG_NETWORK_ZONE,
437 ARG_NETWORK_VETH_EXTRA,
438 ARG_NETWORK_NAMESPACE_PATH,
439 ARG_PERSONALITY,
440 ARG_VOLATILE,
441 ARG_TEMPLATE,
442 ARG_PROPERTY,
443 ARG_PRIVATE_USERS,
444 ARG_KILL_SIGNAL,
445 ARG_SETTINGS,
446 ARG_CHDIR,
447 ARG_PIVOT_ROOT,
448 ARG_PRIVATE_USERS_CHOWN,
449 ARG_NOTIFY_READY,
450 ARG_ROOT_HASH,
451 ARG_SYSTEM_CALL_FILTER,
452 ARG_RLIMIT,
453 ARG_HOSTNAME,
454 ARG_NO_NEW_PRIVILEGES,
455 ARG_OOM_SCORE_ADJUST,
456 ARG_CPU_AFFINITY,
457 ARG_RESOLV_CONF,
458 ARG_TIMEZONE,
459 };
460
461 static const struct option options[] = {
462 { "help", no_argument0, NULL((void*)0), 'h' },
463 { "version", no_argument0, NULL((void*)0), ARG_VERSION },
464 { "directory", required_argument1, NULL((void*)0), 'D' },
465 { "template", required_argument1, NULL((void*)0), ARG_TEMPLATE },
466 { "ephemeral", no_argument0, NULL((void*)0), 'x' },
467 { "user", required_argument1, NULL((void*)0), 'u' },
468 { "private-network", no_argument0, NULL((void*)0), ARG_PRIVATE_NETWORK },
469 { "as-pid2", no_argument0, NULL((void*)0), 'a' },
470 { "boot", no_argument0, NULL((void*)0), 'b' },
471 { "uuid", required_argument1, NULL((void*)0), ARG_UUID },
472 { "read-only", no_argument0, NULL((void*)0), ARG_READ_ONLY },
473 { "capability", required_argument1, NULL((void*)0), ARG_CAPABILITY },
474 { "drop-capability", required_argument1, NULL((void*)0), ARG_DROP_CAPABILITY },
475 { "no-new-privileges", required_argument1, NULL((void*)0), ARG_NO_NEW_PRIVILEGES },
476 { "link-journal", required_argument1, NULL((void*)0), ARG_LINK_JOURNAL },
477 { "bind", required_argument1, NULL((void*)0), ARG_BIND },
478 { "bind-ro", required_argument1, NULL((void*)0), ARG_BIND_RO },
479 { "tmpfs", required_argument1, NULL((void*)0), ARG_TMPFS },
480 { "overlay", required_argument1, NULL((void*)0), ARG_OVERLAY },
481 { "overlay-ro", required_argument1, NULL((void*)0), ARG_OVERLAY_RO },
482 { "machine", required_argument1, NULL((void*)0), 'M' },
483 { "hostname", required_argument1, NULL((void*)0), ARG_HOSTNAME },
484 { "slice", required_argument1, NULL((void*)0), 'S' },
485 { "setenv", required_argument1, NULL((void*)0), 'E' },
486 { "selinux-context", required_argument1, NULL((void*)0), 'Z' },
487 { "selinux-apifs-context", required_argument1, NULL((void*)0), 'L' },
488 { "quiet", no_argument0, NULL((void*)0), 'q' },
489 { "share-system", no_argument0, NULL((void*)0), ARG_SHARE_SYSTEM }, /* not documented */
490 { "register", required_argument1, NULL((void*)0), ARG_REGISTER },
491 { "keep-unit", no_argument0, NULL((void*)0), ARG_KEEP_UNIT },
492 { "network-interface", required_argument1, NULL((void*)0), ARG_NETWORK_INTERFACE },
493 { "network-macvlan", required_argument1, NULL((void*)0), ARG_NETWORK_MACVLAN },
494 { "network-ipvlan", required_argument1, NULL((void*)0), ARG_NETWORK_IPVLAN },
495 { "network-veth", no_argument0, NULL((void*)0), 'n' },
496 { "network-veth-extra", required_argument1, NULL((void*)0), ARG_NETWORK_VETH_EXTRA },
497 { "network-bridge", required_argument1, NULL((void*)0), ARG_NETWORK_BRIDGE },
498 { "network-zone", required_argument1, NULL((void*)0), ARG_NETWORK_ZONE },
499 { "network-namespace-path", required_argument1, NULL((void*)0), ARG_NETWORK_NAMESPACE_PATH },
500 { "personality", required_argument1, NULL((void*)0), ARG_PERSONALITY },
501 { "image", required_argument1, NULL((void*)0), 'i' },
502 { "volatile", optional_argument2, NULL((void*)0), ARG_VOLATILE },
503 { "port", required_argument1, NULL((void*)0), 'p' },
504 { "property", required_argument1, NULL((void*)0), ARG_PROPERTY },
505 { "private-users", optional_argument2, NULL((void*)0), ARG_PRIVATE_USERS },
506 { "private-users-chown", optional_argument2, NULL((void*)0), ARG_PRIVATE_USERS_CHOWN },
507 { "kill-signal", required_argument1, NULL((void*)0), ARG_KILL_SIGNAL },
508 { "settings", required_argument1, NULL((void*)0), ARG_SETTINGS },
509 { "chdir", required_argument1, NULL((void*)0), ARG_CHDIR },
510 { "pivot-root", required_argument1, NULL((void*)0), ARG_PIVOT_ROOT },
511 { "notify-ready", required_argument1, NULL((void*)0), ARG_NOTIFY_READY },
512 { "root-hash", required_argument1, NULL((void*)0), ARG_ROOT_HASH },
513 { "system-call-filter", required_argument1, NULL((void*)0), ARG_SYSTEM_CALL_FILTER },
514 { "rlimit", required_argument1, NULL((void*)0), ARG_RLIMIT },
515 { "oom-score-adjust", required_argument1, NULL((void*)0), ARG_OOM_SCORE_ADJUST },
516 { "cpu-affinity", required_argument1, NULL((void*)0), ARG_CPU_AFFINITY },
517 { "resolv-conf", required_argument1, NULL((void*)0), ARG_RESOLV_CONF },
518 { "timezone", required_argument1, NULL((void*)0), ARG_TIMEZONE },
519 {}
520 };
521
522 int c, r;
523 const char *p, *e;
524 uint64_t plus = 0, minus = 0;
525 bool_Bool mask_all_settings = false0, mask_no_settings = false0;
526
527 assert(argc >= 0)do { if ((__builtin_expect(!!(!(argc >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("argc >= 0"), "../src/nspawn/nspawn.c"
, 527, __PRETTY_FUNCTION__); } while (0)
;
528 assert(argv)do { if ((__builtin_expect(!!(!(argv)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("argv"), "../src/nspawn/nspawn.c", 528, __PRETTY_FUNCTION__
); } while (0)
;
529
530 while ((c = getopt_long(argc, argv, "+hD:u:abL:M:jS:Z:qi:xp:nUE:", options, NULL((void*)0))) >= 0)
531 switch (c) {
532
533 case 'h':
534 help();
535 return 0;
536
537 case ARG_VERSION:
538 return version();
539
540 case 'D':
541 r = parse_path_argument_and_warn(optarg, false0, &arg_directory);
542 if (r < 0)
543 return r;
544 break;
545
546 case ARG_TEMPLATE:
547 r = parse_path_argument_and_warn(optarg, false0, &arg_template);
548 if (r < 0)
549 return r;
550 break;
551
552 case 'i':
553 r = parse_path_argument_and_warn(optarg, false0, &arg_image);
554 if (r < 0)
555 return r;
556 break;
557
558 case 'x':
559 arg_ephemeral = true1;
560 break;
561
562 case 'u':
563 r = free_and_strdup(&arg_user, optarg);
564 if (r < 0)
565 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
565, __func__)
;
566
567 arg_settings_mask |= SETTING_USER;
568 break;
569
570 case ARG_NETWORK_ZONE: {
571 char *j;
572
573 j = strappend("vz-", optarg);
574 if (!j)
575 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
575, __func__)
;
576
577 if (!ifname_valid(j)) {
578 log_error("Network zone name not valid: %s", j)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 578, __func__, "Network zone name not valid: %s"
, j) : -abs(_e); })
;
579 free(j);
580 return -EINVAL22;
581 }
582
583 free_and_replace(arg_network_zone, j)({ free(arg_network_zone); (arg_network_zone) = (j); (j) = ((
void*)0); 0; })
;
584
585 arg_network_veth = true1;
586 arg_private_network = true1;
587 arg_settings_mask |= SETTING_NETWORK;
588 break;
589 }
590
591 case ARG_NETWORK_BRIDGE:
592
593 if (!ifname_valid(optarg)) {
594 log_error("Bridge interface name not valid: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 594, __func__, "Bridge interface name not valid: %s"
, optarg) : -abs(_e); })
;
595 return -EINVAL22;
596 }
597
598 r = free_and_strdup(&arg_network_bridge, optarg);
599 if (r < 0)
600 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
600, __func__)
;
601
602 _fallthrough_;
603 case 'n':
604 arg_network_veth = true1;
605 arg_private_network = true1;
606 arg_settings_mask |= SETTING_NETWORK;
607 break;
608
609 case ARG_NETWORK_VETH_EXTRA:
610 r = veth_extra_parse(&arg_network_veth_extra, optarg);
611 if (r < 0)
612 return log_error_errno(r, "Failed to parse --network-veth-extra= parameter: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 612, __func__, "Failed to parse --network-veth-extra= parameter: %s"
, optarg) : -abs(_e); })
;
613
614 arg_private_network = true1;
615 arg_settings_mask |= SETTING_NETWORK;
616 break;
617
618 case ARG_NETWORK_INTERFACE:
619 if (!ifname_valid(optarg)) {
620 log_error("Network interface name not valid: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 620, __func__, "Network interface name not valid: %s"
, optarg) : -abs(_e); })
;
621 return -EINVAL22;
622 }
623
624 if (strv_extend(&arg_network_interfaces, optarg) < 0)
625 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
625, __func__)
;
626
627 arg_private_network = true1;
628 arg_settings_mask |= SETTING_NETWORK;
629 break;
630
631 case ARG_NETWORK_MACVLAN:
632
633 if (!ifname_valid(optarg)) {
634 log_error("MACVLAN network interface name not valid: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 634, __func__, "MACVLAN network interface name not valid: %s"
, optarg) : -abs(_e); })
;
635 return -EINVAL22;
636 }
637
638 if (strv_extend(&arg_network_macvlan, optarg) < 0)
639 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
639, __func__)
;
640
641 arg_private_network = true1;
642 arg_settings_mask |= SETTING_NETWORK;
643 break;
644
645 case ARG_NETWORK_IPVLAN:
646
647 if (!ifname_valid(optarg)) {
648 log_error("IPVLAN network interface name not valid: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 648, __func__, "IPVLAN network interface name not valid: %s"
, optarg) : -abs(_e); })
;
649 return -EINVAL22;
650 }
651
652 if (strv_extend(&arg_network_ipvlan, optarg) < 0)
653 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
653, __func__)
;
654
655 _fallthrough_;
656 case ARG_PRIVATE_NETWORK:
657 arg_private_network = true1;
658 arg_settings_mask |= SETTING_NETWORK;
659 break;
660
661 case ARG_NETWORK_NAMESPACE_PATH:
662 r = parse_path_argument_and_warn(optarg, false0, &arg_network_namespace_path);
663 if (r < 0)
664 return r;
665
666 break;
667
668 case 'b':
669 if (arg_start_mode == START_PID2) {
670 log_error("--boot and --as-pid2 may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 670, __func__, "--boot and --as-pid2 may not be combined."
) : -abs(_e); })
;
671 return -EINVAL22;
672 }
673
674 arg_start_mode = START_BOOT;
675 arg_settings_mask |= SETTING_START_MODE;
676 break;
677
678 case 'a':
679 if (arg_start_mode == START_BOOT) {
680 log_error("--boot and --as-pid2 may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 680, __func__, "--boot and --as-pid2 may not be combined."
) : -abs(_e); })
;
681 return -EINVAL22;
682 }
683
684 arg_start_mode = START_PID2;
685 arg_settings_mask |= SETTING_START_MODE;
686 break;
687
688 case ARG_UUID:
689 r = sd_id128_from_string(optarg, &arg_uuid);
690 if (r < 0)
691 return log_error_errno(r, "Invalid UUID: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 691, __func__, "Invalid UUID: %s"
, optarg) : -abs(_e); })
;
692
693 if (sd_id128_is_null(arg_uuid)) {
694 log_error("Machine UUID may not be all zeroes.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 694, __func__, "Machine UUID may not be all zeroes."
) : -abs(_e); })
;
695 return -EINVAL22;
696 }
697
698 arg_settings_mask |= SETTING_MACHINE_ID;
699 break;
700
701 case 'S':
702 arg_slice = optarg;
703 break;
704
705 case 'M':
706 if (isempty(optarg))
707 arg_machine = mfree(arg_machine);
708 else {
709 if (!machine_name_is_valid(optarg)hostname_is_valid(optarg, 0)) {
710 log_error("Invalid machine name: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 710, __func__, "Invalid machine name: %s"
, optarg) : -abs(_e); })
;
711 return -EINVAL22;
712 }
713
714 r = free_and_strdup(&arg_machine, optarg);
715 if (r < 0)
716 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
716, __func__)
;
717 }
718 break;
719
720 case ARG_HOSTNAME:
721 if (isempty(optarg))
722 arg_hostname = mfree(arg_hostname);
723 else {
724 if (!hostname_is_valid(optarg, false0)) {
725 log_error("Invalid hostname: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 725, __func__, "Invalid hostname: %s"
, optarg) : -abs(_e); })
;
726 return -EINVAL22;
727 }
728
729 r = free_and_strdup(&arg_hostname, optarg);
730 if (r < 0)
731 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
731, __func__)
;
732 }
733
734 arg_settings_mask |= SETTING_HOSTNAME;
735 break;
736
737 case 'Z':
738 arg_selinux_context = optarg;
739 break;
740
741 case 'L':
742 arg_selinux_apifs_context = optarg;
743 break;
744
745 case ARG_READ_ONLY:
746 arg_read_only = true1;
747 arg_settings_mask |= SETTING_READ_ONLY;
748 break;
749
750 case ARG_CAPABILITY:
751 case ARG_DROP_CAPABILITY: {
752 p = optarg;
753 for (;;) {
754 _cleanup_free___attribute__((cleanup(freep))) char *t = NULL((void*)0);
755
756 r = extract_first_word(&p, &t, ",", 0);
757 if (r < 0)
758 return log_error_errno(r, "Failed to parse capability %s.", t)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 758, __func__, "Failed to parse capability %s."
, t) : -abs(_e); })
;
759
760 if (r == 0)
761 break;
762
763 if (streq(t, "all")(strcmp((t),("all")) == 0)) {
764 if (c == ARG_CAPABILITY)
765 plus = (uint64_t) -1;
766 else
767 minus = (uint64_t) -1;
768 } else {
769 int cap;
770
771 cap = capability_from_name(t);
772 if (cap < 0) {
773 log_error("Failed to parse capability %s.", t)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 773, __func__, "Failed to parse capability %s."
, t) : -abs(_e); })
;
774 return -EINVAL22;
775 }
776
777 if (c == ARG_CAPABILITY)
778 plus |= 1ULL << (uint64_t) cap;
779 else
780 minus |= 1ULL << (uint64_t) cap;
781 }
782 }
783
784 arg_settings_mask |= SETTING_CAPABILITY;
785 break;
786 }
787
788 case ARG_NO_NEW_PRIVILEGES:
789 r = parse_boolean(optarg);
790 if (r < 0)
791 return log_error_errno(r, "Failed to parse --no-new-privileges= argument: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 791, __func__, "Failed to parse --no-new-privileges= argument: %s"
, optarg) : -abs(_e); })
;
792
793 arg_no_new_privileges = r;
794 arg_settings_mask |= SETTING_NO_NEW_PRIVILEGES;
795 break;
796
797 case 'j':
798 arg_link_journal = LINK_GUEST;
799 arg_link_journal_try = true1;
800 arg_settings_mask |= SETTING_LINK_JOURNAL;
801 break;
802
803 case ARG_LINK_JOURNAL:
804 r = parse_link_journal(optarg, &arg_link_journal, &arg_link_journal_try);
805 if (r < 0) {
806 log_error_errno(r, "Failed to parse link journal mode %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 806, __func__, "Failed to parse link journal mode %s"
, optarg) : -abs(_e); })
;
807 return -EINVAL22;
808 }
809
810 arg_settings_mask |= SETTING_LINK_JOURNAL;
811 break;
812
813 case ARG_BIND:
814 case ARG_BIND_RO:
815 r = bind_mount_parse(&arg_custom_mounts, &arg_n_custom_mounts, optarg, c == ARG_BIND_RO);
816 if (r < 0)
817 return log_error_errno(r, "Failed to parse --bind(-ro)= argument %s: %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 817, __func__, "Failed to parse --bind(-ro)= argument %s: %m"
, optarg) : -abs(_e); })
;
818
819 arg_settings_mask |= SETTING_CUSTOM_MOUNTS;
820 break;
821
822 case ARG_TMPFS:
823 r = tmpfs_mount_parse(&arg_custom_mounts, &arg_n_custom_mounts, optarg);
824 if (r < 0)
825 return log_error_errno(r, "Failed to parse --tmpfs= argument %s: %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 825, __func__, "Failed to parse --tmpfs= argument %s: %m"
, optarg) : -abs(_e); })
;
826
827 arg_settings_mask |= SETTING_CUSTOM_MOUNTS;
828 break;
829
830 case ARG_OVERLAY:
831 case ARG_OVERLAY_RO:
832 r = overlay_mount_parse(&arg_custom_mounts, &arg_n_custom_mounts, optarg, c == ARG_OVERLAY_RO);
833 if (r == -EADDRNOTAVAIL99)
834 return log_error_errno(r, "--overlay(-ro)= needs at least two colon-separated directories specified.")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 834, __func__, "--overlay(-ro)= needs at least two colon-separated directories specified."
) : -abs(_e); })
;
835 if (r < 0)
836 return log_error_errno(r, "Failed to parse --overlay(-ro)= argument %s: %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 836, __func__, "Failed to parse --overlay(-ro)= argument %s: %m"
, optarg) : -abs(_e); })
;
837
838 arg_settings_mask |= SETTING_CUSTOM_MOUNTS;
839 break;
840
841 case 'E': {
842 char **n;
843
844 if (!env_assignment_is_valid(optarg)) {
845 log_error("Environment variable assignment '%s' is not valid.", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 845, __func__, "Environment variable assignment '%s' is not valid."
, optarg) : -abs(_e); })
;
846 return -EINVAL22;
847 }
848
849 n = strv_env_set(arg_setenv, optarg);
850 if (!n)
851 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
851, __func__)
;
852
853 strv_free_and_replace(arg_setenv, n)({ strv_free(arg_setenv); (arg_setenv) = (n); (n) = ((void*)0
); 0; })
;
854 arg_settings_mask |= SETTING_ENVIRONMENT;
855 break;
856 }
857
858 case 'q':
859 arg_quiet = true1;
860 break;
861
862 case ARG_SHARE_SYSTEM:
863 /* We don't officially support this anymore, except for compat reasons. People should use the
864 * $SYSTEMD_NSPAWN_SHARE_* environment variables instead. */
865 log_warning("Please do not use --share-system anymore, use $SYSTEMD_NSPAWN_SHARE_* instead.")({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 865, __func__, "Please do not use --share-system anymore, use $SYSTEMD_NSPAWN_SHARE_* instead."
) : -abs(_e); })
;
866 arg_clone_ns_flags = 0;
867 break;
868
869 case ARG_REGISTER:
870 r = parse_boolean(optarg);
871 if (r < 0) {
872 log_error("Failed to parse --register= argument: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 872, __func__, "Failed to parse --register= argument: %s"
, optarg) : -abs(_e); })
;
873 return r;
874 }
875
876 arg_register = r;
877 break;
878
879 case ARG_KEEP_UNIT:
880 arg_keep_unit = true1;
881 break;
882
883 case ARG_PERSONALITY:
884
885 arg_personality = personality_from_string(optarg);
886 if (arg_personality == PERSONALITY_INVALID0xffffffffLU) {
887 log_error("Unknown or unsupported personality '%s'.", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 887, __func__, "Unknown or unsupported personality '%s'."
, optarg) : -abs(_e); })
;
888 return -EINVAL22;
889 }
890
891 arg_settings_mask |= SETTING_PERSONALITY;
892 break;
893
894 case ARG_VOLATILE:
895
896 if (!optarg)
897 arg_volatile_mode = VOLATILE_YES;
898 else if (streq(optarg, "help")(strcmp((optarg),("help")) == 0)) {
899 DUMP_STRING_TABLE(volatile_mode, VolatileMode, _VOLATILE_MODE_MAX)do { VolatileMode _k; flockfile(stdout); for (_k = 0; _k <
(_VOLATILE_MODE_MAX); _k++) { const char *_t; _t = volatile_mode_to_string
(_k); if (!_t) continue; fputs_unlocked(_t, stdout); fputc_unlocked
('\n', stdout); } funlockfile(stdout); } while(0)
;
900 return 0;
901 } else {
902 VolatileMode m;
903
904 m = volatile_mode_from_string(optarg);
905 if (m < 0) {
906 log_error("Failed to parse --volatile= argument: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 906, __func__, "Failed to parse --volatile= argument: %s"
, optarg) : -abs(_e); })
;
907 return -EINVAL22;
908 } else
909 arg_volatile_mode = m;
910 }
911
912 arg_settings_mask |= SETTING_VOLATILE_MODE;
913 break;
914
915 case 'p':
916 r = expose_port_parse(&arg_expose_ports, optarg);
917 if (r == -EEXIST17)
918 return log_error_errno(r, "Duplicate port specification: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 918, __func__, "Duplicate port specification: %s"
, optarg) : -abs(_e); })
;
919 if (r < 0)
920 return log_error_errno(r, "Failed to parse host port %s: %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 920, __func__, "Failed to parse host port %s: %m"
, optarg) : -abs(_e); })
;
921
922 arg_settings_mask |= SETTING_EXPOSE_PORTS;
923 break;
924
925 case ARG_PROPERTY:
926 if (strv_extend(&arg_property, optarg) < 0)
927 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
927, __func__)
;
928
929 break;
930
931 case ARG_PRIVATE_USERS: {
932 int boolean = -1;
933
934 if (!optarg)
935 boolean = true1;
936 else if (!in_charset(optarg, DIGITS"0123456789"))
937 /* do *not* parse numbers as booleans */
938 boolean = parse_boolean(optarg);
939
940 if (boolean == false0) {
941 /* no: User namespacing off */
942 arg_userns_mode = USER_NAMESPACE_NO;
943 arg_uid_shift = UID_INVALID((uid_t) -1);
944 arg_uid_range = UINT32_C(0x10000)0x10000U;
945 } else if (boolean == true1) {
946 /* yes: User namespacing on, UID range is read from root dir */
947 arg_userns_mode = USER_NAMESPACE_FIXED;
948 arg_uid_shift = UID_INVALID((uid_t) -1);
949 arg_uid_range = UINT32_C(0x10000)0x10000U;
950 } else if (streq(optarg, "pick")(strcmp((optarg),("pick")) == 0)) {
951 /* pick: User namespacing on, UID range is picked randomly */
952 arg_userns_mode = USER_NAMESPACE_PICK;
953 arg_uid_shift = UID_INVALID((uid_t) -1);
954 arg_uid_range = UINT32_C(0x10000)0x10000U;
955 } else {
956 _cleanup_free___attribute__((cleanup(freep))) char *buffer = NULL((void*)0);
957 const char *range, *shift;
958
959 /* anything else: User namespacing on, UID range is explicitly configured */
960
961 range = strchr(optarg, ':');
962 if (range) {
963 buffer = strndup(optarg, range - optarg);
964 if (!buffer)
965 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
965, __func__)
;
966 shift = buffer;
967
968 range++;
969 r = safe_atou32(range, &arg_uid_range);
970 if (r < 0)
971 return log_error_errno(r, "Failed to parse UID range \"%s\": %m", range)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 971, __func__, "Failed to parse UID range \"%s\": %m"
, range) : -abs(_e); })
;
972 } else
973 shift = optarg;
974
975 r = parse_uid(shift, &arg_uid_shift);
976 if (r < 0)
977 return log_error_errno(r, "Failed to parse UID \"%s\": %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 977, __func__, "Failed to parse UID \"%s\": %m"
, optarg) : -abs(_e); })
;
978
979 arg_userns_mode = USER_NAMESPACE_FIXED;
980 }
981
982 if (arg_uid_range <= 0) {
983 log_error("UID range cannot be 0.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 983, __func__, "UID range cannot be 0."
) : -abs(_e); })
;
984 return -EINVAL22;
985 }
986
987 arg_settings_mask |= SETTING_USERNS;
988 break;
989 }
990
991 case 'U':
992 if (userns_supported()) {
993 arg_userns_mode = USER_NAMESPACE_PICK;
994 arg_uid_shift = UID_INVALID((uid_t) -1);
995 arg_uid_range = UINT32_C(0x10000)0x10000U;
996
997 arg_settings_mask |= SETTING_USERNS;
998 }
999
1000 break;
1001
1002 case ARG_PRIVATE_USERS_CHOWN:
1003 arg_userns_chown = true1;
1004
1005 arg_settings_mask |= SETTING_USERNS;
1006 break;
1007
1008 case ARG_KILL_SIGNAL:
1009 if (streq(optarg, "help")(strcmp((optarg),("help")) == 0)) {
1010 DUMP_STRING_TABLE(signal, int, _NSIG)do { int _k; flockfile(stdout); for (_k = 0; _k < ((64 + 1
)); _k++) { const char *_t; _t = signal_to_string(_k); if (!_t
) continue; fputs_unlocked(_t, stdout); fputc_unlocked('\n', stdout
); } funlockfile(stdout); } while(0)
;
1011 return 0;
1012 }
1013
1014 arg_kill_signal = signal_from_string(optarg);
1015 if (arg_kill_signal < 0) {
1016 log_error("Cannot parse signal: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1016, __func__, "Cannot parse signal: %s"
, optarg) : -abs(_e); })
;
1017 return -EINVAL22;
1018 }
1019
1020 arg_settings_mask |= SETTING_KILL_SIGNAL;
1021 break;
1022
1023 case ARG_SETTINGS:
1024
1025 /* no → do not read files
1026 * yes → read files, do not override cmdline, trust only subset
1027 * override → read files, override cmdline, trust only subset
1028 * trusted → read files, do not override cmdline, trust all
1029 */
1030
1031 r = parse_boolean(optarg);
1032 if (r < 0) {
1033 if (streq(optarg, "trusted")(strcmp((optarg),("trusted")) == 0)) {
1034 mask_all_settings = false0;
1035 mask_no_settings = false0;
1036 arg_settings_trusted = true1;
1037
1038 } else if (streq(optarg, "override")(strcmp((optarg),("override")) == 0)) {
1039 mask_all_settings = false0;
1040 mask_no_settings = true1;
1041 arg_settings_trusted = -1;
1042 } else
1043 return log_error_errno(r, "Failed to parse --settings= argument: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1043, __func__, "Failed to parse --settings= argument: %s"
, optarg) : -abs(_e); })
;
1044 } else if (r > 0) {
1045 /* yes */
1046 mask_all_settings = false0;
1047 mask_no_settings = false0;
1048 arg_settings_trusted = -1;
1049 } else {
1050 /* no */
1051 mask_all_settings = true1;
1052 mask_no_settings = false0;
1053 arg_settings_trusted = false0;
1054 }
1055
1056 break;
1057
1058 case ARG_CHDIR:
1059 if (!path_is_absolute(optarg)) {
1060 log_error("Working directory %s is not an absolute path.", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1060, __func__, "Working directory %s is not an absolute path."
, optarg) : -abs(_e); })
;
1061 return -EINVAL22;
1062 }
1063
1064 r = free_and_strdup(&arg_chdir, optarg);
1065 if (r < 0)
1066 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1066, __func__)
;
1067
1068 arg_settings_mask |= SETTING_WORKING_DIRECTORY;
1069 break;
1070
1071 case ARG_PIVOT_ROOT:
1072 r = pivot_root_parse(&arg_pivot_root_new, &arg_pivot_root_old, optarg);
1073 if (r < 0)
1074 return log_error_errno(r, "Failed to parse --pivot-root= argument %s: %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1074, __func__, "Failed to parse --pivot-root= argument %s: %m"
, optarg) : -abs(_e); })
;
1075
1076 arg_settings_mask |= SETTING_PIVOT_ROOT;
1077 break;
1078
1079 case ARG_NOTIFY_READY:
1080 r = parse_boolean(optarg);
1081 if (r < 0) {
1082 log_error("%s is not a valid notify mode. Valid modes are: yes, no, and ready.", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1082, __func__, "%s is not a valid notify mode. Valid modes are: yes, no, and ready."
, optarg) : -abs(_e); })
;
1083 return -EINVAL22;
1084 }
1085 arg_notify_ready = r;
1086 arg_settings_mask |= SETTING_NOTIFY_READY;
1087 break;
1088
1089 case ARG_ROOT_HASH: {
1090 void *k;
1091 size_t l;
1092
1093 r = unhexmem(optarg, strlen(optarg), &k, &l);
1094 if (r < 0)
1095 return log_error_errno(r, "Failed to parse root hash: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1095, __func__, "Failed to parse root hash: %s"
, optarg) : -abs(_e); })
;
1096 if (l < sizeof(sd_id128_t)) {
1097 log_error("Root hash must be at least 128bit long: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1097, __func__, "Root hash must be at least 128bit long: %s"
, optarg) : -abs(_e); })
;
1098 free(k);
1099 return -EINVAL22;
1100 }
1101
1102 free(arg_root_hash);
1103 arg_root_hash = k;
1104 arg_root_hash_size = l;
1105 break;
1106 }
1107
1108 case ARG_SYSTEM_CALL_FILTER: {
1109 bool_Bool negative;
1110 const char *items;
1111
1112 negative = optarg[0] == '~';
1113 items = negative ? optarg + 1 : optarg;
1114
1115 for (;;) {
1116 _cleanup_free___attribute__((cleanup(freep))) char *word = NULL((void*)0);
1117
1118 r = extract_first_word(&items, &word, NULL((void*)0), 0);
1119 if (r == 0)
1120 break;
1121 if (r == -ENOMEM12)
1122 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1122, __func__)
;
1123 if (r < 0)
1124 return log_error_errno(r, "Failed to parse system call filter: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1124, __func__, "Failed to parse system call filter: %m"
) : -abs(_e); })
;
1125
1126 if (negative)
1127 r = strv_extend(&arg_syscall_blacklist, word);
1128 else
1129 r = strv_extend(&arg_syscall_whitelist, word);
1130 if (r < 0)
1131 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1131, __func__)
;
1132 }
1133
1134 arg_settings_mask |= SETTING_SYSCALL_FILTER;
1135 break;
1136 }
1137
1138 case ARG_RLIMIT: {
1139 const char *eq;
1140 char *name;
1141 int rl;
1142
1143 if (streq(optarg, "help")(strcmp((optarg),("help")) == 0)) {
1144 DUMP_STRING_TABLE(rlimit, int, _RLIMIT_MAX)do { int _k; flockfile(stdout); for (_k = 0; _k < ((__RLIMIT_RTTIME
+1 > __RLIMIT_NLIMITS ? __RLIMIT_RTTIME+1 : __RLIMIT_NLIMITS
)); _k++) { const char *_t; _t = rlimit_to_string(_k); if (!_t
) continue; fputs_unlocked(_t, stdout); fputc_unlocked('\n', stdout
); } funlockfile(stdout); } while(0)
;
1145 return 0;
1146 }
1147
1148 eq = strchr(optarg, '=');
1149 if (!eq) {
1150 log_error("--rlimit= expects an '=' assignment.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1150, __func__, "--rlimit= expects an '=' assignment."
) : -abs(_e); })
;
1151 return -EINVAL22;
1152 }
1153
1154 name = strndup(optarg, eq - optarg);
1155 if (!name)
1156 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1156, __func__)
;
1157
1158 rl = rlimit_from_string_harder(name);
1159 if (rl < 0) {
1160 log_error("Unknown resource limit: %s", name)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1160, __func__, "Unknown resource limit: %s"
, name) : -abs(_e); })
;
1161 return -EINVAL22;
1162 }
1163
1164 if (!arg_rlimit[rl]) {
1165 arg_rlimit[rl] = new0(struct rlimit, 1)((struct rlimit*) calloc((1), sizeof(struct rlimit)));
1166 if (!arg_rlimit[rl])
1167 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1167, __func__)
;
1168 }
1169
1170 r = rlimit_parse(rl, eq + 1, arg_rlimit[rl]);
1171 if (r < 0)
1172 return log_error_errno(r, "Failed to parse resource limit: %s", eq + 1)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1172, __func__, "Failed to parse resource limit: %s"
, eq + 1) : -abs(_e); })
;
1173
1174 arg_settings_mask |= SETTING_RLIMIT_FIRST((uint64_t) SETTING_RLIMIT_FIRST) << rl;
1175 break;
1176 }
1177
1178 case ARG_OOM_SCORE_ADJUST:
1179 r = parse_oom_score_adjust(optarg, &arg_oom_score_adjust);
1180 if (r < 0)
1181 return log_error_errno(r, "Failed to parse --oom-score-adjust= parameter: %s", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1181, __func__, "Failed to parse --oom-score-adjust= parameter: %s"
, optarg) : -abs(_e); })
;
1182
1183 arg_oom_score_adjust_set = true1;
1184 arg_settings_mask |= SETTING_OOM_SCORE_ADJUST;
1185 break;
1186
1187 case ARG_CPU_AFFINITY: {
1188 CPUSet cpuset;
1189
1190 r = parse_cpu_set(optarg, &cpuset);
1191 if (r < 0)
1192 return log_error_errno(r, "Failed to parse CPU affinity mask %s: %m", optarg)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1192, __func__, "Failed to parse CPU affinity mask %s: %m"
, optarg) : -abs(_e); })
;
1193
1194 cpu_set_reset(&arg_cpu_set);
1195 arg_cpu_set = cpuset;
1196 arg_settings_mask |= SETTING_CPU_AFFINITY;
1197 break;
1198 }
1199
1200 case ARG_RESOLV_CONF:
1201 if (streq(optarg, "help")(strcmp((optarg),("help")) == 0)) {
1202 DUMP_STRING_TABLE(resolv_conf_mode, ResolvConfMode, _RESOLV_CONF_MODE_MAX)do { ResolvConfMode _k; flockfile(stdout); for (_k = 0; _k <
(_RESOLV_CONF_MODE_MAX); _k++) { const char *_t; _t = resolv_conf_mode_to_string
(_k); if (!_t) continue; fputs_unlocked(_t, stdout); fputc_unlocked
('\n', stdout); } funlockfile(stdout); } while(0)
;
1203 return 0;
1204 }
1205
1206 arg_resolv_conf = resolv_conf_mode_from_string(optarg);
1207 if (arg_resolv_conf < 0) {
1208 log_error("Failed to parse /etc/resolv.conf mode: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1208, __func__, "Failed to parse /etc/resolv.conf mode: %s"
, optarg) : -abs(_e); })
;
1209 return -EINVAL22;
1210 }
1211
1212 arg_settings_mask |= SETTING_RESOLV_CONF;
1213 break;
1214
1215 case ARG_TIMEZONE:
1216 if (streq(optarg, "help")(strcmp((optarg),("help")) == 0)) {
1217 DUMP_STRING_TABLE(timezone_mode, TimezoneMode, _TIMEZONE_MODE_MAX)do { TimezoneMode _k; flockfile(stdout); for (_k = 0; _k <
(_TIMEZONE_MODE_MAX); _k++) { const char *_t; _t = timezone_mode_to_string
(_k); if (!_t) continue; fputs_unlocked(_t, stdout); fputc_unlocked
('\n', stdout); } funlockfile(stdout); } while(0)
;
1218 return 0;
1219 }
1220
1221 arg_timezone = timezone_mode_from_string(optarg);
1222 if (arg_timezone < 0) {
1223 log_error("Failed to parse /etc/localtime mode: %s", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1223, __func__, "Failed to parse /etc/localtime mode: %s"
, optarg) : -abs(_e); })
;
1224 return -EINVAL22;
1225 }
1226
1227 arg_settings_mask |= SETTING_TIMEZONE;
1228 break;
1229
1230 case '?':
1231 return -EINVAL22;
1232
1233 default:
1234 assert_not_reached("Unhandled option")do { log_assert_failed_unreachable_realm(LOG_REALM_SYSTEMD, (
"Unhandled option"), "../src/nspawn/nspawn.c", 1234, __PRETTY_FUNCTION__
); } while (0)
;
1235 }
1236
1237 /* If --network-namespace-path is given with any other network-related option,
1238 * we need to error out, to avoid conflicts between different network options. */
1239 if (arg_network_namespace_path &&
1240 (arg_network_interfaces || arg_network_macvlan ||
1241 arg_network_ipvlan || arg_network_veth_extra ||
1242 arg_network_bridge || arg_network_zone ||
1243 arg_network_veth || arg_private_network)) {
1244 log_error("--network-namespace-path cannot be combined with other network options.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1244, __func__, "--network-namespace-path cannot be combined with other network options."
) : -abs(_e); })
;
1245 return -EINVAL22;
1246 }
1247
1248 parse_share_ns_env("SYSTEMD_NSPAWN_SHARE_NS_IPC", CLONE_NEWIPC0x08000000);
1249 parse_share_ns_env("SYSTEMD_NSPAWN_SHARE_NS_PID", CLONE_NEWPID0x20000000);
1250 parse_share_ns_env("SYSTEMD_NSPAWN_SHARE_NS_UTS", CLONE_NEWUTS0x04000000);
1251 parse_share_ns_env("SYSTEMD_NSPAWN_SHARE_SYSTEM", CLONE_NEWIPC0x08000000|CLONE_NEWPID0x20000000|CLONE_NEWUTS0x04000000);
1252
1253 if (arg_userns_mode != USER_NAMESPACE_NO)
1254 arg_mount_settings |= MOUNT_USE_USERNS;
1255
1256 if (arg_private_network)
1257 arg_mount_settings |= MOUNT_APPLY_APIVFS_NETNS;
1258
1259 parse_mount_settings_env();
1260
1261 if (!(arg_clone_ns_flags & CLONE_NEWPID0x20000000) ||
1262 !(arg_clone_ns_flags & CLONE_NEWUTS0x04000000)) {
1263 arg_register = false0;
1264 if (arg_start_mode != START_PID1) {
1265 log_error("--boot cannot be used without namespacing.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1265, __func__, "--boot cannot be used without namespacing."
) : -abs(_e); })
;
1266 return -EINVAL22;
1267 }
1268 }
1269
1270 if (arg_userns_mode == USER_NAMESPACE_PICK)
1271 arg_userns_chown = true1;
1272
1273 if (arg_keep_unit && arg_register && cg_pid_get_owner_uid(0, NULL((void*)0)) >= 0) {
1274 /* Save the user from accidentally registering either user-$SESSION.scope or user@.service.
1275 * The latter is not technically a user session, but we don't need to labour the point. */
1276 log_error("--keep-unit --register=yes may not be used when invoked from a user session.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1276, __func__, "--keep-unit --register=yes may not be used when invoked from a user session."
) : -abs(_e); })
;
1277 return -EINVAL22;
1278 }
1279
1280 if (arg_directory && arg_image) {
1281 log_error("--directory= and --image= may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1281, __func__, "--directory= and --image= may not be combined."
) : -abs(_e); })
;
1282 return -EINVAL22;
1283 }
1284
1285 if (arg_template && arg_image) {
1286 log_error("--template= and --image= may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1286, __func__, "--template= and --image= may not be combined."
) : -abs(_e); })
;
1287 return -EINVAL22;
1288 }
1289
1290 if (arg_ephemeral && arg_template && !arg_directory) {
1291 /* User asked for ephemeral execution but specified --template= instead of --directory=. Semantically
1292 * such an invocation makes some sense, see https://github.com/systemd/systemd/issues/3667. Let's
1293 * accept this here, and silently make "--ephemeral --template=" equivalent to "--ephemeral
1294 * --directory=". */
1295
1296 arg_directory = TAKE_PTR(arg_template)({ typeof(arg_template) _ptr_ = (arg_template); (arg_template
) = ((void*)0); _ptr_; })
;
1297 }
1298
1299 if (arg_template && !(arg_directory || arg_machine)) {
1300 log_error("--template= needs --directory= or --machine=.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1300, __func__, "--template= needs --directory= or --machine=."
) : -abs(_e); })
;
1301 return -EINVAL22;
1302 }
1303
1304 if (arg_ephemeral && arg_template) {
1305 log_error("--ephemeral and --template= may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1305, __func__, "--ephemeral and --template= may not be combined."
) : -abs(_e); })
;
1306 return -EINVAL22;
1307 }
1308
1309 if (arg_ephemeral && !IN_SET(arg_link_journal, LINK_NO, LINK_AUTO)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){LINK_NO, LINK_AUTO})/sizeof(int)]; switch
(arg_link_journal) { case LINK_NO: case LINK_AUTO: _found = 1
; break; default: break; } _found; })
) {
1310 log_error("--ephemeral and --link-journal= may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1310, __func__, "--ephemeral and --link-journal= may not be combined."
) : -abs(_e); })
;
1311 return -EINVAL22;
1312 }
1313
1314 if (arg_userns_mode != USER_NAMESPACE_NO && !userns_supported()) {
1315 log_error("--private-users= is not supported, kernel compiled without user namespace support.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1315, __func__, "--private-users= is not supported, kernel compiled without user namespace support."
) : -abs(_e); })
;
1316 return -EOPNOTSUPP95;
1317 }
1318
1319 if (arg_userns_chown && arg_read_only) {
1320 log_error("--read-only and --private-users-chown may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1320, __func__, "--read-only and --private-users-chown may not be combined."
) : -abs(_e); })
;
1321 return -EINVAL22;
1322 }
1323
1324 if (arg_network_bridge && arg_network_zone) {
1325 log_error("--network-bridge= and --network-zone= may not be combined.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1325, __func__, "--network-bridge= and --network-zone= may not be combined."
) : -abs(_e); })
;
1326 return -EINVAL22;
1327 }
1328
1329 if (argc > optind) {
1330 arg_parameters = strv_copy(argv + optind);
1331 if (!arg_parameters)
1332 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1332, __func__)
;
1333
1334 arg_settings_mask |= SETTING_START_MODE;
1335 }
1336
1337 /* Load all settings from .nspawn files */
1338 if (mask_no_settings)
1339 arg_settings_mask = 0;
1340
1341 /* Don't load any settings from .nspawn files */
1342 if (mask_all_settings)
1343 arg_settings_mask = _SETTINGS_MASK_ALL;
1344
1345 arg_caps_retain = (arg_caps_retain | plus | (arg_private_network ? 1ULL << CAP_NET_ADMIN12 : 0)) & ~minus;
1346
1347 r = cg_unified_flush();
1348 if (r < 0)
1349 return log_error_errno(r, "Failed to determine whether the unified cgroups hierarchy is used: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1349, __func__, "Failed to determine whether the unified cgroups hierarchy is used: %m"
) : -abs(_e); })
;
1350
1351 e = getenv("SYSTEMD_NSPAWN_CONTAINER_SERVICE");
1352 if (e)
1353 arg_container_service_name = e;
1354
1355 r = getenv_bool("SYSTEMD_NSPAWN_USE_CGNS");
1356 if (r < 0)
1357 arg_use_cgns = cg_ns_supported();
1358 else
1359 arg_use_cgns = r;
1360
1361 r = custom_mount_check_all();
1362 if (r < 0)
1363 return r;
1364
1365 return 1;
1366}
1367
1368static int verify_arguments(void) {
1369 if (arg_userns_mode != USER_NAMESPACE_NO && (arg_mount_settings & MOUNT_APPLY_APIVFS_NETNS) && !arg_private_network) {
1370 log_error("Invalid namespacing settings. Mounting sysfs with --private-users requires --private-network.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1370, __func__, "Invalid namespacing settings. Mounting sysfs with --private-users requires --private-network."
) : -abs(_e); })
;
1371 return -EINVAL22;
1372 }
1373
1374 if (arg_userns_mode != USER_NAMESPACE_NO && !(arg_mount_settings & MOUNT_APPLY_APIVFS_RO)) {
1375 log_error("Cannot combine --private-users with read-write mounts.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1375, __func__, "Cannot combine --private-users with read-write mounts."
) : -abs(_e); })
;
1376 return -EINVAL22;
1377 }
1378
1379 if (arg_volatile_mode != VOLATILE_NO && arg_read_only) {
1380 log_error("Cannot combine --read-only with --volatile. Note that --volatile already implies a read-only base hierarchy.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1380, __func__, "Cannot combine --read-only with --volatile. Note that --volatile already implies a read-only base hierarchy."
) : -abs(_e); })
;
1381 return -EINVAL22;
1382 }
1383
1384 if (arg_expose_ports && !arg_private_network) {
1385 log_error("Cannot use --port= without private networking.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1385, __func__, "Cannot use --port= without private networking."
) : -abs(_e); })
;
1386 return -EINVAL22;
1387 }
1388
1389#if ! HAVE_LIBIPTC1
1390 if (arg_expose_ports) {
1391 log_error("--port= is not supported, compiled without libiptc support.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1391, __func__, "--port= is not supported, compiled without libiptc support."
) : -abs(_e); })
;
1392 return -EOPNOTSUPP95;
1393 }
1394#endif
1395
1396 if (arg_start_mode == START_BOOT && arg_kill_signal <= 0)
1397 arg_kill_signal = SIGRTMIN(__libc_current_sigrtmin ())+3;
1398
1399 return 0;
1400}
1401
1402static int userns_lchown(const char *p, uid_t uid, gid_t gid) {
1403 assert(p)do { if ((__builtin_expect(!!(!(p)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("p"), "../src/nspawn/nspawn.c", 1403, __PRETTY_FUNCTION__
); } while (0)
;
1404
1405 if (arg_userns_mode == USER_NAMESPACE_NO)
1406 return 0;
1407
1408 if (uid == UID_INVALID((uid_t) -1) && gid == GID_INVALID((gid_t) -1))
1409 return 0;
1410
1411 if (uid != UID_INVALID((uid_t) -1)) {
1412 uid += arg_uid_shift;
1413
1414 if (uid < arg_uid_shift || uid >= arg_uid_shift + arg_uid_range)
1415 return -EOVERFLOW75;
1416 }
1417
1418 if (gid != GID_INVALID((gid_t) -1)) {
1419 gid += (gid_t) arg_uid_shift;
1420
1421 if (gid < (gid_t) arg_uid_shift || gid >= (gid_t) (arg_uid_shift + arg_uid_range))
1422 return -EOVERFLOW75;
1423 }
1424
1425 if (lchown(p, uid, gid) < 0)
1426 return -errno(*__errno_location ());
1427
1428 return 0;
1429}
1430
1431static int userns_mkdir(const char *root, const char *path, mode_t mode, uid_t uid, gid_t gid) {
1432 const char *q;
1433 int r;
1434
1435 q = prefix_roota(root, path)({ const char* _path = (path), *_root = (root), *_ret; char *
_p, *_n; size_t _l; while (_path[0] == '/' && _path[1
] == '/') _path ++; if (empty_or_root(_root)) _ret = _path; else
{ _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
1436 r = mkdir_errno_wrapper(q, mode);
1437 if (r == -EEXIST17)
1438 return 0;
1439 if (r < 0)
1440 return r;
1441
1442 return userns_lchown(q, uid, gid);
1443}
1444
1445static const char *timezone_from_path(const char *path) {
1446 const char *z;
1447
1448 z = path_startswith(path, "../usr/share/zoneinfo/");
1449 if (z)
1450 return z;
1451
1452 z = path_startswith(path, "/usr/share/zoneinfo/");
1453 if (z)
1454 return z;
1455
1456 return NULL((void*)0);
1457}
1458
1459static int setup_timezone(const char *dest) {
1460 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *etc = NULL((void*)0);
1461 const char *where, *check;
1462 TimezoneMode m;
1463 int r;
1464
1465 assert(dest)do { if ((__builtin_expect(!!(!(dest)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("dest"), "../src/nspawn/nspawn.c", 1465,
__PRETTY_FUNCTION__); } while (0)
;
1466
1467 if (IN_SET(arg_timezone, TIMEZONE_AUTO, TIMEZONE_SYMLINK)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){TIMEZONE_AUTO, TIMEZONE_SYMLINK})/sizeof
(int)]; switch(arg_timezone) { case TIMEZONE_AUTO: case TIMEZONE_SYMLINK
: _found = 1; break; default: break; } _found; })
) {
1468 r = readlink_malloc("/etc/localtime", &p);
1469 if (r == -ENOENT2 && arg_timezone == TIMEZONE_AUTO)
1470 m = arg_read_only && arg_volatile_mode != VOLATILE_YES ? TIMEZONE_OFF : TIMEZONE_DELETE;
1471 else if (r == -EINVAL22 && arg_timezone == TIMEZONE_AUTO) /* regular file? */
1472 m = arg_read_only && arg_volatile_mode != VOLATILE_YES ? TIMEZONE_BIND : TIMEZONE_COPY;
1473 else if (r < 0) {
1474 log_warning_errno(r, "Failed to read host's /etc/localtime symlink, not updating container timezone: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1474, __func__, "Failed to read host's /etc/localtime symlink, not updating container timezone: %m"
) : -abs(_e); })
;
1475 /* To handle warning, delete /etc/localtime and replace it with a symbolic link to a time zone data
1476 * file.
1477 *
1478 * Example:
1479 * ln -s /usr/share/zoneinfo/UTC /etc/localtime
1480 */
1481 return 0;
1482 } else if (arg_timezone == TIMEZONE_AUTO)
1483 m = arg_read_only && arg_volatile_mode != VOLATILE_YES ? TIMEZONE_BIND : TIMEZONE_SYMLINK;
1484 else
1485 m = arg_timezone;
1486 } else
1487 m = arg_timezone;
1488
1489 if (m == TIMEZONE_OFF)
1490 return 0;
1491
1492 r = chase_symlinks("/etc", dest, CHASE_PREFIX_ROOT, &etc);
1493 if (r < 0) {
1494 log_warning_errno(r, "Failed to resolve /etc path in container, ignoring: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1494, __func__, "Failed to resolve /etc path in container, ignoring: %m"
) : -abs(_e); })
;
1495 return 0;
1496 }
1497
1498 where = strjoina(etc, "/localtime")({ const char *_appendees_[] = { etc, "/localtime" }; char *_d_
, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__
(__builtin_choose_expr( !__builtin_types_compatible_p(typeof
(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
1499
1500 switch (m) {
1501
1502 case TIMEZONE_DELETE:
1503 if (unlink(where) < 0)
1504 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, "Failed to remove '%s', ignoring: %m", where)({ int _level = (((*__errno_location ()) == 2 ? 7 : 4)), _e =
(((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm
(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((
_realm) << 10 | (_level)), _e, "../src/nspawn/nspawn.c"
, 1504, __func__, "Failed to remove '%s', ignoring: %m", where
) : -abs(_e); })
;
1505
1506 return 0;
1507
1508 case TIMEZONE_SYMLINK: {
1509 _cleanup_free___attribute__((cleanup(freep))) char *q = NULL((void*)0);
1510 const char *z, *what;
1511
1512 z = timezone_from_path(p);
1513 if (!z) {
1514 log_warning("/etc/localtime does not point into /usr/share/zoneinfo/, not updating container timezone.")({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1514, __func__, "/etc/localtime does not point into /usr/share/zoneinfo/, not updating container timezone."
) : -abs(_e); })
;
1515 return 0;
1516 }
1517
1518 r = readlink_malloc(where, &q);
1519 if (r >= 0 && streq_ptr(timezone_from_path(q), z))
1520 return 0; /* Already pointing to the right place? Then do nothing .. */
1521
1522 check = strjoina(dest, "/usr/share/zoneinfo/", z)({ const char *_appendees_[] = { dest, "/usr/share/zoneinfo/"
, z }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_
= 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
1523 r = chase_symlinks(check, dest, 0, NULL((void*)0));
1524 if (r < 0)
1525 log_debug_errno(r, "Timezone %s does not exist (or is not accessible) in container, not creating symlink: %m", z)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1525, __func__, "Timezone %s does not exist (or is not accessible) in container, not creating symlink: %m"
, z) : -abs(_e); })
;
1526 else {
1527 if (unlink(where) < 0 && errno(*__errno_location ()) != ENOENT2) {
1528 log_full_errno(IN_SET(errno, EROFS, EACCES, EPERM) ? LOG_DEBUG : LOG_WARNING, /* Don't complain on read-only images */({ int _level = ((({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){30, 13, 1})/sizeof(int)]; switch((*__errno_location
())) { case 30: case 13: case 1: _found = 1; break; default:
break; } _found; }) ? 7 : 4)), _e = (((*__errno_location ())
)), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm
) >= ((_level) & 0x07)) ? log_internal_realm(((_realm)
<< 10 | (_level)), _e, "../src/nspawn/nspawn.c", 1529,
__func__, "Failed to remove existing timezone info %s in container, ignoring: %m"
, where) : -abs(_e); })
1529 errno, "Failed to remove existing timezone info %s in container, ignoring: %m", where)({ int _level = ((({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){30, 13, 1})/sizeof(int)]; switch((*__errno_location
())) { case 30: case 13: case 1: _found = 1; break; default:
break; } _found; }) ? 7 : 4)), _e = (((*__errno_location ())
)), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm
) >= ((_level) & 0x07)) ? log_internal_realm(((_realm)
<< 10 | (_level)), _e, "../src/nspawn/nspawn.c", 1529,
__func__, "Failed to remove existing timezone info %s in container, ignoring: %m"
, where) : -abs(_e); })
;
1530 return 0;
1531 }
1532
1533 what = strjoina("../usr/share/zoneinfo/", z)({ const char *_appendees_[] = { "../usr/share/zoneinfo/", z }
; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0
; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
1534 if (symlink(what, where) < 0) {
1535 log_full_errno(IN_SET(errno, EROFS, EACCES, EPERM) ? LOG_DEBUG : LOG_WARNING,({ int _level = ((({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){30, 13, 1})/sizeof(int)]; switch((*__errno_location
())) { case 30: case 13: case 1: _found = 1; break; default:
break; } _found; }) ? 7 : 4)), _e = (((*__errno_location ())
)), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm
) >= ((_level) & 0x07)) ? log_internal_realm(((_realm)
<< 10 | (_level)), _e, "../src/nspawn/nspawn.c", 1536,
__func__, "Failed to correct timezone of container, ignoring: %m"
) : -abs(_e); })
1536 errno, "Failed to correct timezone of container, ignoring: %m")({ int _level = ((({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){30, 13, 1})/sizeof(int)]; switch((*__errno_location
())) { case 30: case 13: case 1: _found = 1; break; default:
break; } _found; }) ? 7 : 4)), _e = (((*__errno_location ())
)), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm
) >= ((_level) & 0x07)) ? log_internal_realm(((_realm)
<< 10 | (_level)), _e, "../src/nspawn/nspawn.c", 1536,
__func__, "Failed to correct timezone of container, ignoring: %m"
) : -abs(_e); })
;
1537 return 0;
1538 }
1539
1540 break;
1541 }
1542
1543 _fallthrough_;
1544 }
1545
1546 case TIMEZONE_BIND: {
1547 _cleanup_free___attribute__((cleanup(freep))) char *resolved = NULL((void*)0);
1548 int found;
1549
1550 found = chase_symlinks(where, dest, CHASE_NONEXISTENT, &resolved);
1551 if (found < 0) {
1552 log_warning_errno(found, "Failed to resolve /etc/localtime path in container, ignoring: %m")({ int _level = ((4)), _e = ((found)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1552, __func__, "Failed to resolve /etc/localtime path in container, ignoring: %m"
) : -abs(_e); })
;
1553 return 0;
1554 }
1555
1556 if (found == 0) /* missing? */
1557 (void) touch(resolved);
1558
1559 r = mount_verbose(LOG_WARNING4, "/etc/localtime", resolved, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
1560 if (r >= 0)
1561 return mount_verbose(LOG_ERR3, NULL((void*)0), resolved, NULL((void*)0), MS_BINDMS_BIND|MS_REMOUNTMS_REMOUNT|MS_RDONLYMS_RDONLY|MS_NOSUIDMS_NOSUID|MS_NODEVMS_NODEV, NULL((void*)0));
1562
1563 _fallthrough_;
1564 }
1565
1566 case TIMEZONE_COPY:
1567 /* If mounting failed, try to copy */
1568 r = copy_file_atomic("/etc/localtime", where, 0644, 0, COPY_REFLINK|COPY_REPLACE);
1569 if (r < 0) {
1570 log_full_errno(IN_SET(r, -EROFS, -EACCES, -EPERM) ? LOG_DEBUG : LOG_WARNING, r,({ int _level = ((({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){-30, -13, -1})/sizeof(int)]; switch(r) { case
-30: case -13: case -1: _found = 1; break; default: break; }
_found; }) ? 7 : 4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1571, __func__, "Failed to copy /etc/localtime to %s, ignoring: %m"
, where) : -abs(_e); })
1571 "Failed to copy /etc/localtime to %s, ignoring: %m", where)({ int _level = ((({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){-30, -13, -1})/sizeof(int)]; switch(r) { case
-30: case -13: case -1: _found = 1; break; default: break; }
_found; }) ? 7 : 4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1571, __func__, "Failed to copy /etc/localtime to %s, ignoring: %m"
, where) : -abs(_e); })
;
1572 return 0;
1573 }
1574
1575 break;
1576
1577 default:
1578 assert_not_reached("unexpected mode")do { log_assert_failed_unreachable_realm(LOG_REALM_SYSTEMD, (
"unexpected mode"), "../src/nspawn/nspawn.c", 1578, __PRETTY_FUNCTION__
); } while (0)
;
1579 }
1580
1581 /* Fix permissions of the symlink or file copy we just created */
1582 r = userns_lchown(where, 0, 0);
1583 if (r < 0)
1584 log_warning_errno(r, "Failed to chown /etc/localtime, ignoring: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1584, __func__, "Failed to chown /etc/localtime, ignoring: %m"
) : -abs(_e); })
;
1585
1586 return 0;
1587}
1588
1589static int have_resolv_conf(const char *path) {
1590 assert(path)do { if ((__builtin_expect(!!(!(path)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("path"), "../src/nspawn/nspawn.c", 1590,
__PRETTY_FUNCTION__); } while (0)
;
1591
1592 if (access(path, F_OK0) < 0) {
1593 if (errno(*__errno_location ()) == ENOENT2)
1594 return 0;
1595
1596 return log_debug_errno(errno, "Failed to determine whether '%s' is available: %m", path)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1596, __func__
, "Failed to determine whether '%s' is available: %m", path) :
-abs(_e); })
;
1597 }
1598
1599 return 1;
1600}
1601
1602static int resolved_listening(void) {
1603 _cleanup_(sd_bus_error_free)__attribute__((cleanup(sd_bus_error_free))) sd_bus_error error = SD_BUS_ERROR_NULL((const sd_bus_error) {(((void*)0)), (((void*)0)), 0});
1604 _cleanup_(sd_bus_flush_close_unrefp)__attribute__((cleanup(sd_bus_flush_close_unrefp))) sd_bus *bus = NULL((void*)0);
1605 _cleanup_free___attribute__((cleanup(freep))) char *dns_stub_listener_mode = NULL((void*)0);
1606 int r;
1607
1608 /* Check if resolved is listening */
1609
1610 r = sd_bus_open_system(&bus);
1611 if (r < 0)
1612 return log_debug_errno(r, "Failed to open system bus: %m")({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1612, __func__, "Failed to open system bus: %m"
) : -abs(_e); })
;
1613
1614 r = bus_name_has_owner(bus, "org.freedesktop.resolve1", NULL((void*)0));
1615 if (r < 0)
1616 return log_debug_errno(r, "Failed to check whether the 'org.freedesktop.resolve1' bus name is taken: %m")({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1616, __func__, "Failed to check whether the 'org.freedesktop.resolve1' bus name is taken: %m"
) : -abs(_e); })
;
1617 if (r == 0)
1618 return 0;
1619
1620 r = sd_bus_get_property_string(bus,
1621 "org.freedesktop.resolve1",
1622 "/org/freedesktop/resolve1",
1623 "org.freedesktop.resolve1.Manager",
1624 "DNSStubListener",
1625 &error,
1626 &dns_stub_listener_mode);
1627 if (r < 0)
1628 return log_debug_errno(r, "Failed to query DNSStubListener property: %s", bus_error_message(&error, r))({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1628, __func__, "Failed to query DNSStubListener property: %s"
, bus_error_message(&error, r)) : -abs(_e); })
;
1629
1630 return STR_IN_SET(dns_stub_listener_mode, "udp", "yes")(!!strv_find((((char**) ((const char*[]) { "udp", "yes", ((void
*)0) }))), (dns_stub_listener_mode)))
;
1631}
1632
1633static int setup_resolv_conf(const char *dest) {
1634 _cleanup_free___attribute__((cleanup(freep))) char *etc = NULL((void*)0);
1635 const char *where, *what;
1636 ResolvConfMode m;
1637 int r;
1638
1639 assert(dest)do { if ((__builtin_expect(!!(!(dest)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("dest"), "../src/nspawn/nspawn.c", 1639,
__PRETTY_FUNCTION__); } while (0)
;
1640
1641 if (arg_resolv_conf == RESOLV_CONF_AUTO) {
1642 if (arg_private_network)
1643 m = RESOLV_CONF_OFF;
1644 else if (have_resolv_conf(STATIC_RESOLV_CONF"/usr/lib/systemd/resolv.conf") > 0 && resolved_listening() > 0)
1645 /* resolved is enabled on the host. In this, case bind mount its static resolv.conf file into the
1646 * container, so that the container can use the host's resolver. Given that network namespacing is
1647 * disabled it's only natural of the container also uses the host's resolver. It also has the big
1648 * advantage that the container will be able to follow the host's DNS server configuration changes
1649 * transparently. */
1650 m = RESOLV_CONF_BIND_STATIC;
1651 else if (have_resolv_conf("/etc/resolv.conf") > 0)
1652 m = arg_read_only && arg_volatile_mode != VOLATILE_YES ? RESOLV_CONF_BIND_HOST : RESOLV_CONF_COPY_HOST;
1653 else
1654 m = arg_read_only && arg_volatile_mode != VOLATILE_YES ? RESOLV_CONF_OFF : RESOLV_CONF_DELETE;
1655 } else
1656 m = arg_resolv_conf;
1657
1658 if (m == RESOLV_CONF_OFF)
1659 return 0;
1660
1661 r = chase_symlinks("/etc", dest, CHASE_PREFIX_ROOT, &etc);
1662 if (r < 0) {
1663 log_warning_errno(r, "Failed to resolve /etc path in container, ignoring: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1663, __func__, "Failed to resolve /etc path in container, ignoring: %m"
) : -abs(_e); })
;
1664 return 0;
1665 }
1666
1667 where = strjoina(etc, "/resolv.conf")({ const char *_appendees_[] = { etc, "/resolv.conf" }; char *
_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ <
__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
1668
1669 if (m == RESOLV_CONF_DELETE) {
1670 if (unlink(where) < 0)
1671 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, "Failed to remove '%s', ignoring: %m", where)({ int _level = (((*__errno_location ()) == 2 ? 7 : 4)), _e =
(((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm
(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((
_realm) << 10 | (_level)), _e, "../src/nspawn/nspawn.c"
, 1671, __func__, "Failed to remove '%s', ignoring: %m", where
) : -abs(_e); })
;
1672
1673 return 0;
1674 }
1675
1676 if (IN_SET(m, RESOLV_CONF_BIND_STATIC, RESOLV_CONF_COPY_STATIC)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){RESOLV_CONF_BIND_STATIC, RESOLV_CONF_COPY_STATIC
})/sizeof(int)]; switch(m) { case RESOLV_CONF_BIND_STATIC: case
RESOLV_CONF_COPY_STATIC: _found = 1; break; default: break; }
_found; })
)
1677 what = STATIC_RESOLV_CONF"/usr/lib/systemd/resolv.conf";
1678 else
1679 what = "/etc/resolv.conf";
1680
1681 if (IN_SET(m, RESOLV_CONF_BIND_HOST, RESOLV_CONF_BIND_STATIC)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){RESOLV_CONF_BIND_HOST, RESOLV_CONF_BIND_STATIC
})/sizeof(int)]; switch(m) { case RESOLV_CONF_BIND_HOST: case
RESOLV_CONF_BIND_STATIC: _found = 1; break; default: break; }
_found; })
) {
1682 _cleanup_free___attribute__((cleanup(freep))) char *resolved = NULL((void*)0);
1683 int found;
1684
1685 found = chase_symlinks(where, dest, CHASE_NONEXISTENT, &resolved);
1686 if (found < 0) {
1687 log_warning_errno(found, "Failed to resolve /etc/resolv.conf path in container, ignoring: %m")({ int _level = ((4)), _e = ((found)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1687, __func__, "Failed to resolve /etc/resolv.conf path in container, ignoring: %m"
) : -abs(_e); })
;
1688 return 0;
1689 }
1690
1691 if (found == 0) /* missing? */
1692 (void) touch(resolved);
1693
1694 r = mount_verbose(LOG_WARNING4, what, resolved, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
1695 if (r >= 0)
1696 return mount_verbose(LOG_ERR3, NULL((void*)0), resolved, NULL((void*)0), MS_BINDMS_BIND|MS_REMOUNTMS_REMOUNT|MS_RDONLYMS_RDONLY|MS_NOSUIDMS_NOSUID|MS_NODEVMS_NODEV, NULL((void*)0));
1697 }
1698
1699 /* If that didn't work, let's copy the file */
1700 r = copy_file(what, where, O_TRUNC01000|O_NOFOLLOW0400000, 0644, 0, COPY_REFLINK);
1701 if (r < 0) {
1702 /* If the file already exists as symlink, let's suppress the warning, under the assumption that
1703 * resolved or something similar runs inside and the symlink points there.
1704 *
1705 * If the disk image is read-only, there's also no point in complaining.
1706 */
1707 log_full_errno(!IN_SET(RESOLV_CONF_COPY_HOST, RESOLV_CONF_COPY_STATIC) && IN_SET(r, -ELOOP, -EROFS, -EACCES, -EPERM) ? LOG_DEBUG : LOG_WARNING, r,({ int _level = ((!({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){RESOLV_CONF_COPY_STATIC})/sizeof(int)]; switch
(RESOLV_CONF_COPY_HOST) { case RESOLV_CONF_COPY_STATIC: _found
= 1; break; default: break; } _found; }) && ({ _Bool
_found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-40, -30, -13, -1})/sizeof(int)]; switch
(r) { case -40: case -30: case -13: case -1: _found = 1; break
; default: break; } _found; }) ? 7 : 4)), _e = ((r)), _realm =
(LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1708, __func__
, "Failed to copy /etc/resolv.conf to %s, ignoring: %m", where
) : -abs(_e); })
1708 "Failed to copy /etc/resolv.conf to %s, ignoring: %m", where)({ int _level = ((!({ _Bool _found = 0; static __attribute__ (
(unused)) char _static_assert__macros_need_to_be_extended[20 -
sizeof((int[]){RESOLV_CONF_COPY_STATIC})/sizeof(int)]; switch
(RESOLV_CONF_COPY_HOST) { case RESOLV_CONF_COPY_STATIC: _found
= 1; break; default: break; } _found; }) && ({ _Bool
_found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-40, -30, -13, -1})/sizeof(int)]; switch
(r) { case -40: case -30: case -13: case -1: _found = 1; break
; default: break; } _found; }) ? 7 : 4)), _e = ((r)), _realm =
(LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1708, __func__
, "Failed to copy /etc/resolv.conf to %s, ignoring: %m", where
) : -abs(_e); })
;
1709 return 0;
1710 }
1711
1712 r = userns_lchown(where, 0, 0);
1713 if (r < 0)
1714 log_warning_errno(r, "Failed to chown /etc/resolv.conf, ignoring: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1714, __func__, "Failed to chown /etc/resolv.conf, ignoring: %m"
) : -abs(_e); })
;
1715
1716 return 0;
1717}
1718
1719static int setup_boot_id(void) {
1720 _cleanup_(unlink_and_freep)__attribute__((cleanup(unlink_and_freep))) char *from = NULL((void*)0);
1721 _cleanup_free___attribute__((cleanup(freep))) char *path = NULL((void*)0);
1722 sd_id128_t rnd = SD_ID128_NULL((const sd_id128_t) { .qwords = { 0, 0 }});
1723 const char *to;
1724 int r;
1725
1726 /* Generate a new randomized boot ID, so that each boot-up of
1727 * the container gets a new one */
1728
1729 r = tempfn_random_child(NULL((void*)0), "proc-sys-kernel-random-boot-id", &path);
1730 if (r < 0)
1731 return log_error_errno(r, "Failed to generate random boot ID path: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1731, __func__, "Failed to generate random boot ID path: %m"
) : -abs(_e); })
;
1732
1733 r = sd_id128_randomize(&rnd);
1734 if (r < 0)
1735 return log_error_errno(r, "Failed to generate random boot id: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1735, __func__, "Failed to generate random boot id: %m"
) : -abs(_e); })
;
1736
1737 r = id128_write(path, ID128_UUID, rnd, false0);
1738 if (r < 0)
1739 return log_error_errno(r, "Failed to write boot id: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1739, __func__, "Failed to write boot id: %m"
) : -abs(_e); })
;
1740
1741 from = TAKE_PTR(path)({ typeof(path) _ptr_ = (path); (path) = ((void*)0); _ptr_; }
)
;
1742 to = "/proc/sys/kernel/random/boot_id";
1743
1744 r = mount_verbose(LOG_ERR3, from, to, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
1745 if (r < 0)
1746 return r;
1747
1748 return mount_verbose(LOG_ERR3, NULL((void*)0), to, NULL((void*)0), MS_BINDMS_BIND|MS_REMOUNTMS_REMOUNT|MS_RDONLYMS_RDONLY|MS_NOSUIDMS_NOSUID|MS_NOEXECMS_NOEXEC|MS_NODEVMS_NODEV, NULL((void*)0));
1749}
1750
1751static int copy_devnodes(const char *dest) {
1752 static const char devnodes[] =
1753 "null\0"
1754 "zero\0"
1755 "full\0"
1756 "random\0"
1757 "urandom\0"
1758 "tty\0"
1759 "net/tun\0";
1760
1761 const char *d;
1762 int r = 0;
1763 _cleanup_umask___attribute__((cleanup(umaskp))) mode_t u;
1764
1765 assert(dest)do { if ((__builtin_expect(!!(!(dest)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("dest"), "../src/nspawn/nspawn.c", 1765,
__PRETTY_FUNCTION__); } while (0)
;
1766
1767 u = umask(0000);
1768
1769 /* Create /dev/net, so that we can create /dev/net/tun in it */
1770 if (userns_mkdir(dest, "/dev/net", 0755, 0, 0) < 0)
1771 return log_error_errno(r, "Failed to create /dev/net directory: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1771, __func__, "Failed to create /dev/net directory: %m"
) : -abs(_e); })
;
1772
1773 NULSTR_FOREACH(d, devnodes)for ((d) = (devnodes); (d) && *(d); (d) = strchr((d),
0)+1)
{
1774 _cleanup_free___attribute__((cleanup(freep))) char *from = NULL((void*)0), *to = NULL((void*)0);
1775 struct stat st;
1776
1777 from = strappend("/dev/", d);
1778 to = prefix_root(dest, from);
1779
1780 if (stat(from, &st) < 0) {
1781
1782 if (errno(*__errno_location ()) != ENOENT2)
1783 return log_error_errno(errno, "Failed to stat %s: %m", from)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1783, __func__
, "Failed to stat %s: %m", from) : -abs(_e); })
;
1784
1785 } else if (!S_ISCHR(st.st_mode)((((st.st_mode)) & 0170000) == (0020000)) && !S_ISBLK(st.st_mode)((((st.st_mode)) & 0170000) == (0060000))) {
1786
1787 log_error("%s is not a char or block device, cannot copy.", from)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1787, __func__, "%s is not a char or block device, cannot copy."
, from) : -abs(_e); })
;
1788 return -EIO5;
1789
1790 } else {
1791 if (mknod(to, st.st_mode, st.st_rdev) < 0) {
1792 /* Explicitly warn the user when /dev is already populated. */
1793 if (errno(*__errno_location ()) == EEXIST17)
1794 log_notice("%s/dev is pre-mounted and pre-populated. If a pre-mounted /dev is provided it needs to be an unpopulated file system.", dest)({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1794, __func__, "%s/dev is pre-mounted and pre-populated. If a pre-mounted /dev is provided it needs to be an unpopulated file system."
, dest) : -abs(_e); })
;
1795 if (errno(*__errno_location ()) != EPERM1)
1796 return log_error_errno(errno, "mknod(%s) failed: %m", to)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1796, __func__
, "mknod(%s) failed: %m", to) : -abs(_e); })
;
1797
1798 /* Some systems abusively restrict mknod but
1799 * allow bind mounts. */
1800 r = touch(to);
1801 if (r < 0)
1802 return log_error_errno(r, "touch (%s) failed: %m", to)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1802, __func__, "touch (%s) failed: %m"
, to) : -abs(_e); })
;
1803 r = mount_verbose(LOG_DEBUG7, from, to, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
1804 if (r < 0)
1805 return log_error_errno(r, "Both mknod and bind mount (%s) failed: %m", to)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1805, __func__, "Both mknod and bind mount (%s) failed: %m"
, to) : -abs(_e); })
;
1806 }
1807
1808 r = userns_lchown(to, 0, 0);
1809 if (r < 0)
1810 return log_error_errno(r, "chown() of device node %s failed: %m", to)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1810, __func__, "chown() of device node %s failed: %m"
, to) : -abs(_e); })
;
1811 }
1812 }
1813
1814 return r;
1815}
1816
1817static int setup_pts(const char *dest) {
1818 _cleanup_free___attribute__((cleanup(freep))) char *options = NULL((void*)0);
1819 const char *p;
1820 int r;
1821
1822#if HAVE_SELINUX1
1823 if (arg_selinux_apifs_context)
1824 (void) asprintf(&options,
1825 "newinstance,ptmxmode=0666,mode=620,gid=" GID_FMT"%" "u" ",context=\"%s\"",
1826 arg_uid_shift + TTY_GID5,
1827 arg_selinux_apifs_context);
1828 else
1829#endif
1830 (void) asprintf(&options,
1831 "newinstance,ptmxmode=0666,mode=620,gid=" GID_FMT"%" "u",
1832 arg_uid_shift + TTY_GID5);
1833
1834 if (!options)
1835 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
1835, __func__)
;
1836
1837 /* Mount /dev/pts itself */
1838 p = prefix_roota(dest, "/dev/pts")({ const char* _path = ("/dev/pts"), *_root = (dest), *_ret; char
*_p, *_n; size_t _l; while (_path[0] == '/' && _path
[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path;
else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
1839 r = mkdir_errno_wrapper(p, 0755);
1840 if (r < 0)
1841 return log_error_errno(r, "Failed to create /dev/pts: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1841, __func__, "Failed to create /dev/pts: %m"
) : -abs(_e); })
;
1842
1843 r = mount_verbose(LOG_ERR3, "devpts", p, "devpts", MS_NOSUIDMS_NOSUID|MS_NOEXECMS_NOEXEC, options);
1844 if (r < 0)
1845 return r;
1846 r = userns_lchown(p, 0, 0);
1847 if (r < 0)
1848 return log_error_errno(r, "Failed to chown /dev/pts: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1848, __func__, "Failed to chown /dev/pts: %m"
) : -abs(_e); })
;
1849
1850 /* Create /dev/ptmx symlink */
1851 p = prefix_roota(dest, "/dev/ptmx")({ const char* _path = ("/dev/ptmx"), *_root = (dest), *_ret;
char *_p, *_n; size_t _l; while (_path[0] == '/' && _path
[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path;
else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
1852 if (symlink("pts/ptmx", p) < 0)
1853 return log_error_errno(errno, "Failed to create /dev/ptmx symlink: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1853, __func__
, "Failed to create /dev/ptmx symlink: %m") : -abs(_e); })
;
1854 r = userns_lchown(p, 0, 0);
1855 if (r < 0)
1856 return log_error_errno(r, "Failed to chown /dev/ptmx: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1856, __func__, "Failed to chown /dev/ptmx: %m"
) : -abs(_e); })
;
1857
1858 /* And fix /dev/pts/ptmx ownership */
1859 p = prefix_roota(dest, "/dev/pts/ptmx")({ const char* _path = ("/dev/pts/ptmx"), *_root = (dest), *_ret
; char *_p, *_n; size_t _l; while (_path[0] == '/' &&
_path[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path
; else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
1860 r = userns_lchown(p, 0, 0);
1861 if (r < 0)
1862 return log_error_errno(r, "Failed to chown /dev/pts/ptmx: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1862, __func__, "Failed to chown /dev/pts/ptmx: %m"
) : -abs(_e); })
;
1863
1864 return 0;
1865}
1866
1867static int setup_dev_console(const char *dest, const char *console) {
1868 _cleanup_umask___attribute__((cleanup(umaskp))) mode_t u;
1869 const char *to;
1870 int r;
1871
1872 assert(dest)do { if ((__builtin_expect(!!(!(dest)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("dest"), "../src/nspawn/nspawn.c", 1872,
__PRETTY_FUNCTION__); } while (0)
;
1873 assert(console)do { if ((__builtin_expect(!!(!(console)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("console"), "../src/nspawn/nspawn.c", 1873
, __PRETTY_FUNCTION__); } while (0)
;
1874
1875 u = umask(0000);
1876
1877 r = chmod_and_chown(console, 0600, arg_uid_shift, arg_uid_shift);
1878 if (r < 0)
1879 return log_error_errno(r, "Failed to correct access mode for TTY: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1879, __func__, "Failed to correct access mode for TTY: %m"
) : -abs(_e); })
;
1880
1881 /* We need to bind mount the right tty to /dev/console since
1882 * ptys can only exist on pts file systems. To have something
1883 * to bind mount things on we create a empty regular file. */
1884
1885 to = prefix_roota(dest, "/dev/console")({ const char* _path = ("/dev/console"), *_root = (dest), *_ret
; char *_p, *_n; size_t _l; while (_path[0] == '/' &&
_path[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path
; else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
1886 r = touch(to);
1887 if (r < 0)
1888 return log_error_errno(r, "touch() for /dev/console failed: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1888, __func__, "touch() for /dev/console failed: %m"
) : -abs(_e); })
;
1889
1890 return mount_verbose(LOG_ERR3, console, to, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
1891}
1892
1893static int setup_keyring(void) {
1894 key_serial_t keyring;
1895
1896 /* Allocate a new session keyring for the container. This makes sure the keyring of the session systemd-nspawn
1897 * was invoked from doesn't leak into the container. Note that by default we block keyctl() and request_key()
1898 * anyway via seccomp so doing this operation isn't strictly necessary, but in case people explicitly whitelist
1899 * these system calls let's make sure we don't leak anything into the container. */
1900
1901 keyring = keyctlmissing_keyctl(KEYCTL_JOIN_SESSION_KEYRING1, 0, 0, 0, 0);
1902 if (keyring == -1) {
1903 if (errno(*__errno_location ()) == ENOSYS38)
1904 log_debug_errno(errno, "Kernel keyring not supported, ignoring.")({ int _level = ((7)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1904, __func__
, "Kernel keyring not supported, ignoring.") : -abs(_e); })
;
1905 else if (IN_SET(errno, EACCES, EPERM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){13, 1})/sizeof(int)]; switch((*__errno_location
())) { case 13: case 1: _found = 1; break; default: break; }
_found; })
)
1906 log_debug_errno(errno, "Kernel keyring access prohibited, ignoring.")({ int _level = ((7)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1906, __func__
, "Kernel keyring access prohibited, ignoring.") : -abs(_e); }
)
;
1907 else
1908 return log_error_errno(errno, "Setting up kernel keyring failed: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1908, __func__
, "Setting up kernel keyring failed: %m") : -abs(_e); })
;
1909 }
1910
1911 return 0;
1912}
1913
1914static int setup_kmsg(int kmsg_socket) {
1915 _cleanup_(unlink_and_freep)__attribute__((cleanup(unlink_and_freep))) char *from = NULL((void*)0);
1916 _cleanup_free___attribute__((cleanup(freep))) char *fifo = NULL((void*)0);
1917 _cleanup_close___attribute__((cleanup(closep))) int fd = -1;
1918 _cleanup_umask___attribute__((cleanup(umaskp))) mode_t u;
1919 const char *to;
1920 int r;
1921
1922 assert(kmsg_socket >= 0)do { if ((__builtin_expect(!!(!(kmsg_socket >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("kmsg_socket >= 0"), "../src/nspawn/nspawn.c"
, 1922, __PRETTY_FUNCTION__); } while (0)
;
1923
1924 u = umask(0000);
1925
1926 /* We create the kmsg FIFO as as temporary file in /tmp, but immediately delete it after bind mounting it to
1927 * /proc/kmsg. While FIFOs on the reading side behave very similar to /proc/kmsg, their writing side behaves
1928 * differently from /dev/kmsg in that writing blocks when nothing is reading. In order to avoid any problems
1929 * with containers deadlocking due to this we simply make /dev/kmsg unavailable to the container. */
1930
1931 r = tempfn_random_child(NULL((void*)0), "proc-kmsg", &fifo);
1932 if (r < 0)
1933 return log_error_errno(r, "Failed to generate kmsg path: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1933, __func__, "Failed to generate kmsg path: %m"
) : -abs(_e); })
;
1934
1935 if (mkfifo(fifo, 0600) < 0)
1936 return log_error_errno(errno, "mkfifo() for /run/kmsg failed: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1936, __func__
, "mkfifo() for /run/kmsg failed: %m") : -abs(_e); })
;
1937
1938 from = TAKE_PTR(fifo)({ typeof(fifo) _ptr_ = (fifo); (fifo) = ((void*)0); _ptr_; }
)
;
1939 to = "/proc/kmsg";
1940
1941 r = mount_verbose(LOG_ERR3, from, to, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
1942 if (r < 0)
1943 return r;
1944
1945 fd = open(from, O_RDWR02|O_NONBLOCK04000|O_CLOEXEC02000000);
1946 if (fd < 0)
1947 return log_error_errno(errno, "Failed to open fifo: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 1947, __func__
, "Failed to open fifo: %m") : -abs(_e); })
;
1948
1949 /* Store away the fd in the socket, so that it stays open as long as we run the child */
1950 r = send_one_fd(kmsg_socket, fd, 0)send_one_fd_iov_sa(kmsg_socket, fd, ((void*)0), 0, ((void*)0)
, 0, 0)
;
1951 if (r < 0)
1952 return log_error_errno(r, "Failed to send FIFO fd: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1952, __func__, "Failed to send FIFO fd: %m"
) : -abs(_e); })
;
1953
1954 return 0;
1955}
1956
1957static int on_address_change(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
1958 union in_addr_union *exposed = userdata;
1959
1960 assert(rtnl)do { if ((__builtin_expect(!!(!(rtnl)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("rtnl"), "../src/nspawn/nspawn.c", 1960,
__PRETTY_FUNCTION__); } while (0)
;
1961 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/nspawn/nspawn.c", 1961, __PRETTY_FUNCTION__
); } while (0)
;
1962 assert(exposed)do { if ((__builtin_expect(!!(!(exposed)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("exposed"), "../src/nspawn/nspawn.c", 1962
, __PRETTY_FUNCTION__); } while (0)
;
1963
1964 expose_port_execute(rtnl, arg_expose_ports, exposed);
1965 return 0;
1966}
1967
1968static int setup_hostname(void) {
1969 int r;
1970
1971 if ((arg_clone_ns_flags & CLONE_NEWUTS0x04000000) == 0)
1972 return 0;
1973
1974 r = sethostname_idempotent(arg_hostname ?: arg_machine);
1975 if (r < 0)
1976 return log_error_errno(r, "Failed to set hostname: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 1976, __func__, "Failed to set hostname: %m"
) : -abs(_e); })
;
1977
1978 return 0;
1979}
1980
1981static int setup_journal(const char *directory) {
1982 sd_id128_t this_id;
1983 _cleanup_free___attribute__((cleanup(freep))) char *d = NULL((void*)0);
1984 const char *p, *q;
1985 bool_Bool try;
1986 char id[33];
1987 int r;
1988
1989 /* Don't link journals in ephemeral mode */
1990 if (arg_ephemeral)
1991 return 0;
1992
1993 if (arg_link_journal == LINK_NO)
1994 return 0;
1995
1996 try = arg_link_journal_try || arg_link_journal == LINK_AUTO;
1997
1998 r = sd_id128_get_machine(&this_id);
1999 if (r < 0)
2000 return log_error_errno(r, "Failed to retrieve machine ID: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2000, __func__, "Failed to retrieve machine ID: %m"
) : -abs(_e); })
;
2001
2002 if (sd_id128_equal(arg_uuid, this_id)) {
2003 log_full(try ? LOG_WARNING : LOG_ERR,({ int _level = (((try ? 4 : 3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2004, __func__, "Host and machine ids are equal (%s): refusing to link journals"
, sd_id128_to_string(arg_uuid, id)) : -abs(_e); })
2004 "Host and machine ids are equal (%s): refusing to link journals", sd_id128_to_string(arg_uuid, id))({ int _level = (((try ? 4 : 3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2004, __func__, "Host and machine ids are equal (%s): refusing to link journals"
, sd_id128_to_string(arg_uuid, id)) : -abs(_e); })
;
2005 if (try)
2006 return 0;
2007 return -EEXIST17;
2008 }
2009
2010 r = userns_mkdir(directory, "/var", 0755, 0, 0);
2011 if (r < 0)
2012 return log_error_errno(r, "Failed to create /var: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2012, __func__, "Failed to create /var: %m"
) : -abs(_e); })
;
2013
2014 r = userns_mkdir(directory, "/var/log", 0755, 0, 0);
2015 if (r < 0)
2016 return log_error_errno(r, "Failed to create /var/log: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2016, __func__, "Failed to create /var/log: %m"
) : -abs(_e); })
;
2017
2018 r = userns_mkdir(directory, "/var/log/journal", 0755, 0, 0);
2019 if (r < 0)
2020 return log_error_errno(r, "Failed to create /var/log/journal: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2020, __func__, "Failed to create /var/log/journal: %m"
) : -abs(_e); })
;
2021
2022 (void) sd_id128_to_string(arg_uuid, id);
2023
2024 p = strjoina("/var/log/journal/", id)({ const char *_appendees_[] = { "/var/log/journal/", id }; char
*_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ <
__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
2025 q = prefix_roota(directory, p)({ const char* _path = (p), *_root = (directory), *_ret; char
*_p, *_n; size_t _l; while (_path[0] == '/' && _path
[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path;
else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
2026
2027 if (path_is_mount_point(p, NULL((void*)0), 0) > 0) {
2028 if (try)
2029 return 0;
2030
2031 log_error("%s: already a mount point, refusing to use for journal", p)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2031, __func__, "%s: already a mount point, refusing to use for journal"
, p) : -abs(_e); })
;
2032 return -EEXIST17;
2033 }
2034
2035 if (path_is_mount_point(q, NULL((void*)0), 0) > 0) {
2036 if (try)
2037 return 0;
2038
2039 log_error("%s: already a mount point, refusing to use for journal", q)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2039, __func__, "%s: already a mount point, refusing to use for journal"
, q) : -abs(_e); })
;
2040 return -EEXIST17;
2041 }
2042
2043 r = readlink_and_make_absolute(p, &d);
2044 if (r >= 0) {
2045 if (IN_SET(arg_link_journal, LINK_GUEST, LINK_AUTO)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){LINK_GUEST, LINK_AUTO})/sizeof(int)]; switch
(arg_link_journal) { case LINK_GUEST: case LINK_AUTO: _found =
1; break; default: break; } _found; })
&&
2046 path_equal(d, q)) {
2047
2048 r = userns_mkdir(directory, p, 0755, 0, 0);
2049 if (r < 0)
2050 log_warning_errno(r, "Failed to create directory %s: %m", q)({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2050, __func__, "Failed to create directory %s: %m"
, q) : -abs(_e); })
;
2051 return 0;
2052 }
2053
2054 if (unlink(p) < 0)
2055 return log_error_errno(errno, "Failed to remove symlink %s: %m", p)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2055, __func__
, "Failed to remove symlink %s: %m", p) : -abs(_e); })
;
2056 } else if (r == -EINVAL22) {
2057
2058 if (arg_link_journal == LINK_GUEST &&
2059 rmdir(p) < 0) {
2060
2061 if (errno(*__errno_location ()) == ENOTDIR20) {
2062 log_error("%s already exists and is neither a symlink nor a directory", p)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2062, __func__, "%s already exists and is neither a symlink nor a directory"
, p) : -abs(_e); })
;
2063 return r;
2064 } else
2065 return log_error_errno(errno, "Failed to remove %s: %m", p)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2065, __func__
, "Failed to remove %s: %m", p) : -abs(_e); })
;
2066 }
2067 } else if (r != -ENOENT2)
2068 return log_error_errno(r, "readlink(%s) failed: %m", p)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2068, __func__, "readlink(%s) failed: %m"
, p) : -abs(_e); })
;
2069
2070 if (arg_link_journal == LINK_GUEST) {
2071
2072 if (symlink(q, p) < 0) {
2073 if (try) {
2074 log_debug_errno(errno, "Failed to symlink %s to %s, skipping journal setup: %m", q, p)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2074, __func__
, "Failed to symlink %s to %s, skipping journal setup: %m", q
, p) : -abs(_e); })
;
2075 return 0;
2076 } else
2077 return log_error_errno(errno, "Failed to symlink %s to %s: %m", q, p)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2077, __func__
, "Failed to symlink %s to %s: %m", q, p) : -abs(_e); })
;
2078 }
2079
2080 r = userns_mkdir(directory, p, 0755, 0, 0);
2081 if (r < 0)
2082 log_warning_errno(r, "Failed to create directory %s: %m", q)({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2082, __func__, "Failed to create directory %s: %m"
, q) : -abs(_e); })
;
2083 return 0;
2084 }
2085
2086 if (arg_link_journal == LINK_HOST) {
2087 /* don't create parents here — if the host doesn't have
2088 * permanent journal set up, don't force it here */
2089
2090 r = mkdir_errno_wrapper(p, 0755);
2091 if (r < 0 && r != -EEXIST17) {
2092 if (try) {
2093 log_debug_errno(r, "Failed to create %s, skipping journal setup: %m", p)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2093, __func__, "Failed to create %s, skipping journal setup: %m"
, p) : -abs(_e); })
;
2094 return 0;
2095 } else
2096 return log_error_errno(r, "Failed to create %s: %m", p)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2096, __func__, "Failed to create %s: %m"
, p) : -abs(_e); })
;
2097 }
2098
2099 } else if (access(p, F_OK0) < 0)
2100 return 0;
2101
2102 if (dir_is_empty(q) == 0)
2103 log_warning("%s is not empty, proceeding anyway.", q)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2103, __func__, "%s is not empty, proceeding anyway."
, q) : -abs(_e); })
;
2104
2105 r = userns_mkdir(directory, p, 0755, 0, 0);
2106 if (r < 0)
2107 return log_error_errno(r, "Failed to create %s: %m", q)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2107, __func__, "Failed to create %s: %m"
, q) : -abs(_e); })
;
2108
2109 r = mount_verbose(LOG_DEBUG7, p, q, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
2110 if (r < 0)
2111 return log_error_errno(errno, "Failed to bind mount journal from host into guest: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2111, __func__
, "Failed to bind mount journal from host into guest: %m") : -
abs(_e); })
;
2112
2113 return 0;
2114}
2115
2116static int drop_capabilities(void) {
2117 return capability_bounding_set_drop(arg_caps_retain, false0);
2118}
2119
2120static int reset_audit_loginuid(void) {
2121 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0);
2122 int r;
2123
2124 if ((arg_clone_ns_flags & CLONE_NEWPID0x20000000) == 0)
2125 return 0;
2126
2127 r = read_one_line_file("/proc/self/loginuid", &p);
2128 if (r == -ENOENT2)
2129 return 0;
2130 if (r < 0)
2131 return log_error_errno(r, "Failed to read /proc/self/loginuid: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2131, __func__, "Failed to read /proc/self/loginuid: %m"
) : -abs(_e); })
;
2132
2133 /* Already reset? */
2134 if (streq(p, "4294967295")(strcmp((p),("4294967295")) == 0))
2135 return 0;
2136
2137 r = write_string_file("/proc/self/loginuid", "4294967295", 0);
2138 if (r < 0) {
2139 log_error_errno(r,({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2144, __func__, "Failed to reset audit login UID. This probably means that your kernel is too\n"
"old and you have audit enabled. Note that the auditing subsystem is known to\n"
"be incompatible with containers on old kernels. Please make sure to upgrade\n"
"your kernel or to off auditing with 'audit=0' on the kernel command line before\n"
"using systemd-nspawn. Sleeping for 5s... (%m)") : -abs(_e);
})
2140 "Failed to reset audit login UID. This probably means that your kernel is too\n"({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2144, __func__, "Failed to reset audit login UID. This probably means that your kernel is too\n"
"old and you have audit enabled. Note that the auditing subsystem is known to\n"
"be incompatible with containers on old kernels. Please make sure to upgrade\n"
"your kernel or to off auditing with 'audit=0' on the kernel command line before\n"
"using systemd-nspawn. Sleeping for 5s... (%m)") : -abs(_e);
})
2141 "old and you have audit enabled. Note that the auditing subsystem is known to\n"({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2144, __func__, "Failed to reset audit login UID. This probably means that your kernel is too\n"
"old and you have audit enabled. Note that the auditing subsystem is known to\n"
"be incompatible with containers on old kernels. Please make sure to upgrade\n"
"your kernel or to off auditing with 'audit=0' on the kernel command line before\n"
"using systemd-nspawn. Sleeping for 5s... (%m)") : -abs(_e);
})
2142 "be incompatible with containers on old kernels. Please make sure to upgrade\n"({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2144, __func__, "Failed to reset audit login UID. This probably means that your kernel is too\n"
"old and you have audit enabled. Note that the auditing subsystem is known to\n"
"be incompatible with containers on old kernels. Please make sure to upgrade\n"
"your kernel or to off auditing with 'audit=0' on the kernel command line before\n"
"using systemd-nspawn. Sleeping for 5s... (%m)") : -abs(_e);
})
2143 "your kernel or to off auditing with 'audit=0' on the kernel command line before\n"({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2144, __func__, "Failed to reset audit login UID. This probably means that your kernel is too\n"
"old and you have audit enabled. Note that the auditing subsystem is known to\n"
"be incompatible with containers on old kernels. Please make sure to upgrade\n"
"your kernel or to off auditing with 'audit=0' on the kernel command line before\n"
"using systemd-nspawn. Sleeping for 5s... (%m)") : -abs(_e);
})
2144 "using systemd-nspawn. Sleeping for 5s... (%m)")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2144, __func__, "Failed to reset audit login UID. This probably means that your kernel is too\n"
"old and you have audit enabled. Note that the auditing subsystem is known to\n"
"be incompatible with containers on old kernels. Please make sure to upgrade\n"
"your kernel or to off auditing with 'audit=0' on the kernel command line before\n"
"using systemd-nspawn. Sleeping for 5s... (%m)") : -abs(_e);
})
;
2145
2146 sleep(5);
2147 }
2148
2149 return 0;
2150}
2151
2152static int setup_propagate(const char *root) {
2153 const char *p, *q;
2154 int r;
2155
2156 (void) mkdir_p("/run/systemd/nspawn/", 0755);
2157 (void) mkdir_p("/run/systemd/nspawn/propagate", 0600);
2158 p = strjoina("/run/systemd/nspawn/propagate/", arg_machine)({ const char *_appendees_[] = { "/run/systemd/nspawn/propagate/"
, arg_machine }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_
; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _len_ += strlen
(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1);
for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr(
!__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
2159 (void) mkdir_p(p, 0600);
2160
2161 r = userns_mkdir(root, "/run/systemd", 0755, 0, 0);
2162 if (r < 0)
2163 return log_error_errno(r, "Failed to create /run/systemd: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2163, __func__, "Failed to create /run/systemd: %m"
) : -abs(_e); })
;
2164
2165 r = userns_mkdir(root, "/run/systemd/nspawn", 0755, 0, 0);
2166 if (r < 0)
2167 return log_error_errno(r, "Failed to create /run/systemd/nspawn: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2167, __func__, "Failed to create /run/systemd/nspawn: %m"
) : -abs(_e); })
;
2168
2169 r = userns_mkdir(root, "/run/systemd/nspawn/incoming", 0600, 0, 0);
2170 if (r < 0)
2171 return log_error_errno(r, "Failed to create /run/systemd/nspawn/incoming: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2171, __func__, "Failed to create /run/systemd/nspawn/incoming: %m"
) : -abs(_e); })
;
2172
2173 q = prefix_roota(root, "/run/systemd/nspawn/incoming")({ const char* _path = ("/run/systemd/nspawn/incoming"), *_root
= (root), *_ret; char *_p, *_n; size_t _l; while (_path[0] ==
'/' && _path[1] == '/') _path ++; if (empty_or_root(
_root)) _ret = _path; else { _l = strlen(_root) + 1 + strlen(
_path) + 1; _n = __builtin_alloca (_l); _p = stpcpy(_n, _root
); while (_p > _n && _p[-1] == '/') _p--; if (_path
[0] != '/') *(_p++) = '/'; strcpy(_p, _path); _ret = _n; } _ret
; })
;
2174 r = mount_verbose(LOG_ERR3, p, q, NULL((void*)0), MS_BINDMS_BIND, NULL((void*)0));
2175 if (r < 0)
2176 return r;
2177
2178 r = mount_verbose(LOG_ERR3, NULL((void*)0), q, NULL((void*)0), MS_BINDMS_BIND|MS_REMOUNTMS_REMOUNT|MS_RDONLYMS_RDONLY, NULL((void*)0));
2179 if (r < 0)
2180 return r;
2181
2182 /* machined will MS_MOVE into that directory, and that's only
2183 * supported for non-shared mounts. */
2184 return mount_verbose(LOG_ERR3, NULL((void*)0), q, NULL((void*)0), MS_SLAVEMS_SLAVE, NULL((void*)0));
2185}
2186
2187static int setup_machine_id(const char *directory) {
2188 const char *etc_machine_id;
2189 sd_id128_t id;
2190 int r;
2191
2192 /* If the UUID in the container is already set, then that's what counts, and we use. If it isn't set, and the
2193 * caller passed --uuid=, then we'll pass it in the $container_uuid env var to PID 1 of the container. The
2194 * assumption is that PID 1 will then write it to /etc/machine-id to make it persistent. If --uuid= is not
2195 * passed we generate a random UUID, and pass it via $container_uuid. In effect this means that /etc/machine-id
2196 * in the container and our idea of the container UUID will always be in sync (at least if PID 1 in the
2197 * container behaves nicely). */
2198
2199 etc_machine_id = prefix_roota(directory, "/etc/machine-id")({ const char* _path = ("/etc/machine-id"), *_root = (directory
), *_ret; char *_p, *_n; size_t _l; while (_path[0] == '/' &&
_path[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path
; else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
2200
2201 r = id128_read(etc_machine_id, ID128_PLAIN, &id);
2202 if (r < 0) {
2203 if (!IN_SET(r, -ENOENT, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-2, -123})/sizeof(int)]; switch(r) { case
-2: case -123: _found = 1; break; default: break; } _found; }
)
) /* If the file is missing or empty, we don't mind */
2204 return log_error_errno(r, "Failed to read machine ID from container image: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2204, __func__, "Failed to read machine ID from container image: %m"
) : -abs(_e); })
;
2205
2206 if (sd_id128_is_null(arg_uuid)) {
2207 r = sd_id128_randomize(&arg_uuid);
2208 if (r < 0)
2209 return log_error_errno(r, "Failed to acquire randomized machine UUID: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2209, __func__, "Failed to acquire randomized machine UUID: %m"
) : -abs(_e); })
;
2210 }
2211 } else {
2212 if (sd_id128_is_null(id)) {
2213 log_error("Machine ID in container image is zero, refusing.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2213, __func__, "Machine ID in container image is zero, refusing."
) : -abs(_e); })
;
2214 return -EINVAL22;
2215 }
2216
2217 arg_uuid = id;
2218 }
2219
2220 return 0;
2221}
2222
2223static int recursive_chown(const char *directory, uid_t shift, uid_t range) {
2224 int r;
2225
2226 assert(directory)do { if ((__builtin_expect(!!(!(directory)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("directory"), "../src/nspawn/nspawn.c", 2226
, __PRETTY_FUNCTION__); } while (0)
;
2227
2228 if (arg_userns_mode == USER_NAMESPACE_NO || !arg_userns_chown)
2229 return 0;
2230
2231 r = path_patch_uid(directory, arg_uid_shift, arg_uid_range);
2232 if (r == -EOPNOTSUPP95)
2233 return log_error_errno(r, "Automatic UID/GID adjusting is only supported for UID/GID ranges starting at multiples of 2^16 with a range of 2^16.")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2233, __func__, "Automatic UID/GID adjusting is only supported for UID/GID ranges starting at multiples of 2^16 with a range of 2^16."
) : -abs(_e); })
;
2234 if (r == -EBADE52)
2235 return log_error_errno(r, "Upper 16 bits of root directory UID and GID do not match.")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2235, __func__, "Upper 16 bits of root directory UID and GID do not match."
) : -abs(_e); })
;
2236 if (r < 0)
2237 return log_error_errno(r, "Failed to adjust UID/GID shift of OS tree: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2237, __func__, "Failed to adjust UID/GID shift of OS tree: %m"
) : -abs(_e); })
;
2238 if (r == 0)
2239 log_debug("Root directory of image is already owned by the right UID/GID range, skipping recursive chown operation.")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2239, __func__, "Root directory of image is already owned by the right UID/GID range, skipping recursive chown operation."
) : -abs(_e); })
;
2240 else
2241 log_debug("Patched directory tree to match UID/GID range.")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2241, __func__, "Patched directory tree to match UID/GID range."
) : -abs(_e); })
;
2242
2243 return r;
2244}
2245
2246/*
2247 * Return values:
2248 * < 0 : wait_for_terminate() failed to get the state of the
2249 * container, the container was terminated by a signal, or
2250 * failed for an unknown reason. No change is made to the
2251 * container argument.
2252 * > 0 : The program executed in the container terminated with an
2253 * error. The exit code of the program executed in the
2254 * container is returned. The container argument has been set
2255 * to CONTAINER_TERMINATED.
2256 * 0 : The container is being rebooted, has been shut down or exited
2257 * successfully. The container argument has been set to either
2258 * CONTAINER_TERMINATED or CONTAINER_REBOOTED.
2259 *
2260 * That is, success is indicated by a return value of zero, and an
2261 * error is indicated by a non-zero value.
2262 */
2263static int wait_for_container(pid_t pid, ContainerStatus *container) {
2264 siginfo_t status;
2265 int r;
2266
2267 r = wait_for_terminate(pid, &status);
2268 if (r < 0)
2269 return log_warning_errno(r, "Failed to wait for container: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2269, __func__, "Failed to wait for container: %m"
) : -abs(_e); })
;
2270
2271 switch (status.si_code) {
2272
2273 case CLD_EXITEDCLD_EXITED:
2274 if (status.si_status_sifields._sigchld.si_status == 0)
2275 log_full(arg_quiet ? LOG_DEBUG : LOG_INFO, "Container %s exited successfully.", arg_machine)({ int _level = (((arg_quiet ? 7 : 6))), _e = ((0)), _realm =
(LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2275, __func__
, "Container %s exited successfully.", arg_machine) : -abs(_e
); })
;
2276 else
2277 log_full(arg_quiet ? LOG_DEBUG : LOG_INFO, "Container %s failed with error code %i.", arg_machine, status.si_status)({ int _level = (((arg_quiet ? 7 : 6))), _e = ((0)), _realm =
(LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2277, __func__
, "Container %s failed with error code %i.", arg_machine, status
._sifields._sigchld.si_status) : -abs(_e); })
;
2278
2279 *container = CONTAINER_TERMINATED;
2280 return status.si_status_sifields._sigchld.si_status;
2281
2282 case CLD_KILLEDCLD_KILLED:
2283 if (status.si_status_sifields._sigchld.si_status == SIGINT2) {
2284 log_full(arg_quiet ? LOG_DEBUG : LOG_INFO, "Container %s has been shut down.", arg_machine)({ int _level = (((arg_quiet ? 7 : 6))), _e = ((0)), _realm =
(LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2284, __func__
, "Container %s has been shut down.", arg_machine) : -abs(_e)
; })
;
2285 *container = CONTAINER_TERMINATED;
2286 return 0;
2287
2288 } else if (status.si_status_sifields._sigchld.si_status == SIGHUP1) {
2289 log_full(arg_quiet ? LOG_DEBUG : LOG_INFO, "Container %s is being rebooted.", arg_machine)({ int _level = (((arg_quiet ? 7 : 6))), _e = ((0)), _realm =
(LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2289, __func__
, "Container %s is being rebooted.", arg_machine) : -abs(_e);
})
;
2290 *container = CONTAINER_REBOOTED;
2291 return 0;
2292 }
2293
2294 _fallthrough_;
2295 case CLD_DUMPEDCLD_DUMPED:
2296 log_error("Container %s terminated by signal %s.", arg_machine, signal_to_string(status.si_status))({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2296, __func__, "Container %s terminated by signal %s."
, arg_machine, signal_to_string(status._sifields._sigchld.si_status
)) : -abs(_e); })
;
2297 return -EIO5;
2298
2299 default:
2300 log_error("Container %s failed due to unknown reason.", arg_machine)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2300, __func__, "Container %s failed due to unknown reason."
, arg_machine) : -abs(_e); })
;
2301 return -EIO5;
2302 }
2303}
2304
2305static int on_orderly_shutdown(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
2306 pid_t pid;
2307
2308 pid = PTR_TO_PID(userdata);
2309 if (pid > 0) {
2310 if (kill(pid, arg_kill_signal) >= 0) {
2311 log_info("Trying to halt container. Send SIGTERM again to trigger immediate termination.")({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2311, __func__, "Trying to halt container. Send SIGTERM again to trigger immediate termination."
) : -abs(_e); })
;
2312 sd_event_source_set_userdata(s, NULL((void*)0));
2313 return 0;
2314 }
2315 }
2316
2317 sd_event_exit(sd_event_source_get_event(s), 0);
2318 return 0;
2319}
2320
2321static int on_sigchld(sd_event_source *s, const struct signalfd_siginfo *ssi, void *userdata) {
2322 pid_t pid;
2323
2324 assert(s)do { if ((__builtin_expect(!!(!(s)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("s"), "../src/nspawn/nspawn.c", 2324, __PRETTY_FUNCTION__
); } while (0)
;
2325 assert(ssi)do { if ((__builtin_expect(!!(!(ssi)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("ssi"), "../src/nspawn/nspawn.c", 2325, __PRETTY_FUNCTION__
); } while (0)
;
2326
2327 pid = PTR_TO_PID(userdata);
2328
2329 for (;;) {
2330 siginfo_t si = {};
2331
2332 if (waitid(P_ALL, 0, &si, WNOHANG1|WNOWAIT0x01000000|WEXITED4) < 0)
2333 return log_error_errno(errno, "Failed to waitid(): %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2333, __func__
, "Failed to waitid(): %m") : -abs(_e); })
;
2334 if (si.si_pid_sifields._kill.si_pid == 0) /* No pending children. */
2335 break;
2336 if (si.si_pid_sifields._kill.si_pid == pid) {
2337 /* The main process we care for has exited. Return from
2338 * signal handler but leave the zombie. */
2339 sd_event_exit(sd_event_source_get_event(s), 0);
2340 break;
2341 }
2342
2343 /* Reap all other children. */
2344 (void) waitid(P_PID, si.si_pid_sifields._kill.si_pid, &si, WNOHANG1|WEXITED4);
2345 }
2346
2347 return 0;
2348}
2349
2350static int on_request_stop(sd_bus_message *m, void *userdata, sd_bus_error *error) {
2351 pid_t pid;
2352
2353 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/nspawn/nspawn.c", 2353, __PRETTY_FUNCTION__
); } while (0)
;
2354
2355 pid = PTR_TO_PID(userdata);
2356
2357 if (arg_kill_signal > 0) {
2358 log_info("Container termination requested. Attempting to halt container.")({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2358, __func__, "Container termination requested. Attempting to halt container."
) : -abs(_e); })
;
2359 (void) kill(pid, arg_kill_signal);
2360 } else {
2361 log_info("Container termination requested. Exiting.")({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2361, __func__, "Container termination requested. Exiting."
) : -abs(_e); })
;
2362 sd_event_exit(sd_bus_get_event(sd_bus_message_get_bus(m)), 0);
2363 }
2364
2365 return 0;
2366}
2367
2368static int determine_names(void) {
2369 int r;
2370
2371 if (arg_template && !arg_directory && arg_machine) {
2372
2373 /* If --template= was specified then we should not
2374 * search for a machine, but instead create a new one
2375 * in /var/lib/machine. */
2376
2377 arg_directory = strjoin("/var/lib/machines/", arg_machine)strjoin_real(("/var/lib/machines/"), arg_machine, ((void*)0));
2378 if (!arg_directory)
2379 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2379, __func__)
;
2380 }
2381
2382 if (!arg_image && !arg_directory) {
2383 if (arg_machine) {
2384 _cleanup_(image_unrefp)__attribute__((cleanup(image_unrefp))) Image *i = NULL((void*)0);
2385
2386 r = image_find(IMAGE_MACHINE, arg_machine, &i);
2387 if (r == -ENOENT2)
2388 return log_error_errno(r, "No image for machine '%s'.", arg_machine)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2388, __func__, "No image for machine '%s'."
, arg_machine) : -abs(_e); })
;
2389 if (r < 0)
2390 return log_error_errno(r, "Failed to find image for machine '%s': %m", arg_machine)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2390, __func__, "Failed to find image for machine '%s': %m"
, arg_machine) : -abs(_e); })
;
2391
2392 if (IN_SET(i->type, IMAGE_RAW, IMAGE_BLOCK)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){IMAGE_RAW, IMAGE_BLOCK})/sizeof(int)]; switch
(i->type) { case IMAGE_RAW: case IMAGE_BLOCK: _found = 1; break
; default: break; } _found; })
)
2393 r = free_and_strdup(&arg_image, i->path);
2394 else
2395 r = free_and_strdup(&arg_directory, i->path);
2396 if (r < 0)
2397 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2397, __func__)
;
2398
2399 if (!arg_ephemeral)
2400 arg_read_only = arg_read_only || i->read_only;
2401 } else {
2402 r = safe_getcwd(&arg_directory);
2403 if (r < 0)
2404 return log_error_errno(r, "Failed to determine current directory: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2404, __func__, "Failed to determine current directory: %m"
) : -abs(_e); })
;
2405 }
2406
2407 if (!arg_directory && !arg_image) {
2408 log_error("Failed to determine path, please use -D or -i.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2408, __func__, "Failed to determine path, please use -D or -i."
) : -abs(_e); })
;
2409 return -EINVAL22;
2410 }
2411 }
2412
2413 if (!arg_machine) {
2414 if (arg_directory && path_equal(arg_directory, "/"))
2415 arg_machine = gethostname_malloc();
2416 else {
2417 if (arg_image) {
2418 char *e;
2419
2420 arg_machine = strdup(basename(arg_image));
2421
2422 /* Truncate suffix if there is one */
2423 e = endswith(arg_machine, ".raw");
2424 if (e)
2425 *e = 0;
2426 } else
2427 arg_machine = strdup(basename(arg_directory));
2428 }
2429 if (!arg_machine)
2430 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2430, __func__)
;
2431
2432 hostname_cleanup(arg_machine);
2433 if (!machine_name_is_valid(arg_machine)hostname_is_valid(arg_machine, 0)) {
2434 log_error("Failed to determine machine name automatically, please use -M.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2434, __func__, "Failed to determine machine name automatically, please use -M."
) : -abs(_e); })
;
2435 return -EINVAL22;
2436 }
2437
2438 if (arg_ephemeral) {
2439 char *b;
2440
2441 /* Add a random suffix when this is an
2442 * ephemeral machine, so that we can run many
2443 * instances at once without manually having
2444 * to specify -M each time. */
2445
2446 if (asprintf(&b, "%s-%016" PRIx64"l" "x", arg_machine, random_u64()) < 0)
2447 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2447, __func__)
;
2448
2449 free(arg_machine);
2450 arg_machine = b;
2451 }
2452 }
2453
2454 return 0;
2455}
2456
2457static int chase_symlinks_and_update(char **p, unsigned flags) {
2458 char *chased;
2459 int r;
2460
2461 assert(p)do { if ((__builtin_expect(!!(!(p)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("p"), "../src/nspawn/nspawn.c", 2461, __PRETTY_FUNCTION__
); } while (0)
;
2462
2463 if (!*p)
2464 return 0;
2465
2466 r = chase_symlinks(*p, NULL((void*)0), flags, &chased);
2467 if (r < 0)
2468 return log_error_errno(r, "Failed to resolve path %s: %m", *p)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2468, __func__, "Failed to resolve path %s: %m"
, *p) : -abs(_e); })
;
2469
2470 free_and_replace(*p, chased)({ free(*p); (*p) = (chased); (chased) = ((void*)0); 0; });
2471 return r; /* r might be an fd here in case we ever use CHASE_OPEN in flags */
2472}
2473
2474static int determine_uid_shift(const char *directory) {
2475 int r;
2476
2477 if (arg_userns_mode == USER_NAMESPACE_NO) {
2478 arg_uid_shift = 0;
2479 return 0;
2480 }
2481
2482 if (arg_uid_shift == UID_INVALID((uid_t) -1)) {
2483 struct stat st;
2484
2485 r = stat(directory, &st);
2486 if (r < 0)
2487 return log_error_errno(errno, "Failed to determine UID base of %s: %m", directory)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2487, __func__
, "Failed to determine UID base of %s: %m", directory) : -abs
(_e); })
;
2488
2489 arg_uid_shift = st.st_uid & UINT32_C(0xffff0000)0xffff0000U;
2490
2491 if (arg_uid_shift != (st.st_gid & UINT32_C(0xffff0000)0xffff0000U)) {
2492 log_error("UID and GID base of %s don't match.", directory)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2492, __func__, "UID and GID base of %s don't match."
, directory) : -abs(_e); })
;
2493 return -EINVAL22;
2494 }
2495
2496 arg_uid_range = UINT32_C(0x10000)0x10000U;
2497 }
2498
2499 if (arg_uid_shift > (uid_t) -1 - arg_uid_range) {
2500 log_error("UID base too high for UID range.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2500, __func__, "UID base too high for UID range."
) : -abs(_e); })
;
2501 return -EINVAL22;
2502 }
2503
2504 return 0;
2505}
2506
2507static int inner_child(
2508 Barrier *barrier,
2509 const char *directory,
2510 bool_Bool secondary,
2511 int kmsg_socket,
2512 int rtnl_socket,
2513 FDSet *fds) {
2514
2515 _cleanup_free___attribute__((cleanup(freep))) char *home = NULL((void*)0);
2516 char as_uuid[37];
2517 size_t n_env = 1;
2518 const char *envp[] = {
2519 "PATH=" DEFAULT_PATH_COMPAT"/usr/local/" "sbin:" "/usr/local/" "bin" ":" "/usr/" "sbin:"
"/usr/" "bin" ":" "/" "sbin:" "/" "bin"
,
2520 NULL((void*)0), /* container */
2521 NULL((void*)0), /* TERM */
2522 NULL((void*)0), /* HOME */
2523 NULL((void*)0), /* USER */
2524 NULL((void*)0), /* LOGNAME */
2525 NULL((void*)0), /* container_uuid */
2526 NULL((void*)0), /* LISTEN_FDS */
2527 NULL((void*)0), /* LISTEN_PID */
2528 NULL((void*)0), /* NOTIFY_SOCKET */
2529 NULL((void*)0)
2530 };
2531 const char *exec_target;
2532 _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **env_use = NULL((void*)0);
2533 int r;
2534
2535 assert(barrier)do { if ((__builtin_expect(!!(!(barrier)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("barrier"), "../src/nspawn/nspawn.c", 2535
, __PRETTY_FUNCTION__); } while (0)
;
2536 assert(directory)do { if ((__builtin_expect(!!(!(directory)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("directory"), "../src/nspawn/nspawn.c", 2536
, __PRETTY_FUNCTION__); } while (0)
;
2537 assert(kmsg_socket >= 0)do { if ((__builtin_expect(!!(!(kmsg_socket >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("kmsg_socket >= 0"), "../src/nspawn/nspawn.c"
, 2537, __PRETTY_FUNCTION__); } while (0)
;
2538
2539 if (arg_userns_mode != USER_NAMESPACE_NO) {
2540 /* Tell the parent, that it now can write the UID map. */
2541 (void) barrier_place(barrier); /* #1 */
2542
2543 /* Wait until the parent wrote the UID map */
2544 if (!barrier_place_and_sync(barrier)) { /* #2 */
2545 log_error("Parent died too early")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2545, __func__, "Parent died too early"
) : -abs(_e); })
;
2546 return -ESRCH3;
2547 }
2548 }
2549
2550 r = reset_uid_gid();
2551 if (r < 0)
2552 return log_error_errno(r, "Couldn't become new root: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2552, __func__, "Couldn't become new root: %m"
) : -abs(_e); })
;
2553
2554 r = mount_all(NULL((void*)0),
2555 arg_mount_settings | MOUNT_IN_USERNS,
2556 arg_uid_shift,
2557 arg_uid_range,
2558 arg_selinux_apifs_context);
2559 if (r < 0)
2560 return r;
2561
2562 if (!arg_network_namespace_path && arg_private_network) {
2563 r = unshare(CLONE_NEWNET0x40000000);
2564 if (r < 0)
2565 return log_error_errno(errno, "Failed to unshare network namespace: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2565, __func__
, "Failed to unshare network namespace: %m") : -abs(_e); })
;
2566
2567 /* Tell the parent that it can setup network interfaces. */
2568 (void) barrier_place(barrier); /* #3 */
2569 }
2570
2571 r = mount_sysfs(NULL((void*)0), arg_mount_settings);
2572 if (r < 0)
2573 return r;
2574
2575 /* Wait until we are cgroup-ified, so that we
2576 * can mount the right cgroup path writable */
2577 if (!barrier_place_and_sync(barrier)) { /* #4 */
2578 log_error("Parent died too early")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2578, __func__, "Parent died too early"
) : -abs(_e); })
;
2579 return -ESRCH3;
2580 }
2581
2582 if (arg_use_cgns && cg_ns_supported()) {
2583 r = unshare(CLONE_NEWCGROUP0x02000000);
2584 if (r < 0)
2585 return log_error_errno(errno, "Failed to unshare cgroup namespace: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2585, __func__
, "Failed to unshare cgroup namespace: %m") : -abs(_e); })
;
2586 r = mount_cgroups(
2587 "",
2588 arg_unified_cgroup_hierarchy,
2589 arg_userns_mode != USER_NAMESPACE_NO,
2590 arg_uid_shift,
2591 arg_uid_range,
2592 arg_selinux_apifs_context,
2593 true1);
2594 if (r < 0)
2595 return r;
2596 } else {
2597 r = mount_systemd_cgroup_writable("", arg_unified_cgroup_hierarchy);
2598 if (r < 0)
2599 return r;
2600 }
2601
2602 r = setup_boot_id();
2603 if (r < 0)
2604 return r;
2605
2606 r = setup_kmsg(kmsg_socket);
2607 if (r < 0)
2608 return r;
2609 kmsg_socket = safe_close(kmsg_socket);
2610
2611 if (setsid() < 0)
2612 return log_error_errno(errno, "setsid() failed: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2612, __func__
, "setsid() failed: %m") : -abs(_e); })
;
2613
2614 if (arg_private_network)
2615 loopback_setup();
2616
2617 if (arg_expose_ports) {
2618 r = expose_port_send_rtnl(rtnl_socket);
2619 if (r < 0)
2620 return r;
2621 rtnl_socket = safe_close(rtnl_socket);
2622 }
2623
2624 if (arg_oom_score_adjust_set) {
2625 r = set_oom_score_adjust(arg_oom_score_adjust);
2626 if (r < 0)
2627 return log_error_errno(r, "Failed to adjust OOM score: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2627, __func__, "Failed to adjust OOM score: %m"
) : -abs(_e); })
;
2628 }
2629
2630 if (arg_cpu_set.set)
2631 if (sched_setaffinity(0, arg_cpu_set.allocated, arg_cpu_set.set) < 0)
2632 return log_error_errno(errno, "Failed to set CPU affinity: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2632, __func__
, "Failed to set CPU affinity: %m") : -abs(_e); })
;
2633
2634 r = drop_capabilities();
2635 if (r < 0)
2636 return log_error_errno(r, "drop_capabilities() failed: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2636, __func__, "drop_capabilities() failed: %m"
) : -abs(_e); })
;
2637
2638 (void) setup_hostname();
2639
2640 if (arg_personality != PERSONALITY_INVALID0xffffffffLU) {
2641 r = safe_personality(arg_personality);
2642 if (r < 0)
2643 return log_error_errno(r, "personality() failed: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2643, __func__, "personality() failed: %m"
) : -abs(_e); })
;
2644 } else if (secondary) {
2645 r = safe_personality(PER_LINUX32);
2646 if (r < 0)
2647 return log_error_errno(r, "personality() failed: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2647, __func__, "personality() failed: %m"
) : -abs(_e); })
;
2648 }
2649
2650#if HAVE_SELINUX1
2651 if (arg_selinux_context)
2652 if (setexeccon(arg_selinux_context) < 0)
2653 return log_error_errno(errno, "setexeccon(\"%s\") failed: %m", arg_selinux_context)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2653, __func__
, "setexeccon(\"%s\") failed: %m", arg_selinux_context) : -abs
(_e); })
;
2654#endif
2655
2656 r = change_uid_gid(arg_user, &home);
2657 if (r < 0)
2658 return r;
2659
2660 if (arg_no_new_privileges)
2661 if (prctl(PR_SET_NO_NEW_PRIVS38, 1, 0, 0, 0) < 0)
2662 return log_error_errno(errno, "Failed to disable new privileges: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2662, __func__
, "Failed to disable new privileges: %m") : -abs(_e); })
;
2663
2664 /* LXC sets container=lxc, so follow the scheme here */
2665 envp[n_env++] = strjoina("container=", arg_container_service_name)({ const char *_appendees_[] = { "container=", arg_container_service_name
}; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ =
0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
2666
2667 envp[n_env] = strv_find_prefix(environ, "TERM=");
2668 if (envp[n_env])
2669 n_env++;
2670
2671 if ((asprintf((char**)(envp + n_env++), "HOME=%s", home ? home: "/root") < 0) ||
2672 (asprintf((char**)(envp + n_env++), "USER=%s", arg_user ? arg_user : "root") < 0) ||
2673 (asprintf((char**)(envp + n_env++), "LOGNAME=%s", arg_user ? arg_user : "root") < 0))
2674 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2674, __func__)
;
2675
2676 assert(!sd_id128_is_null(arg_uuid))do { if ((__builtin_expect(!!(!(!sd_id128_is_null(arg_uuid)))
,0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!sd_id128_is_null(arg_uuid)"
), "../src/nspawn/nspawn.c", 2676, __PRETTY_FUNCTION__); } while
(0)
;
2677
2678 if (asprintf((char**)(envp + n_env++), "container_uuid=%s", id128_to_uuid_string(arg_uuid, as_uuid)) < 0)
2679 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2679, __func__)
;
2680
2681 if (fdset_size(fds) > 0) {
2682 r = fdset_cloexec(fds, false0);
2683 if (r < 0)
2684 return log_error_errno(r, "Failed to unset O_CLOEXEC for file descriptors.")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2684, __func__, "Failed to unset O_CLOEXEC for file descriptors."
) : -abs(_e); })
;
2685
2686 if ((asprintf((char **)(envp + n_env++), "LISTEN_FDS=%u", fdset_size(fds)) < 0) ||
2687 (asprintf((char **)(envp + n_env++), "LISTEN_PID=1") < 0))
2688 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2688, __func__)
;
2689 }
2690 if (asprintf((char **)(envp + n_env++), "NOTIFY_SOCKET=%s", NSPAWN_NOTIFY_SOCKET_PATH"/run/systemd/nspawn/notify") < 0)
2691 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2691, __func__)
;
2692
2693 env_use = strv_env_merge(2, envp, arg_setenv);
2694 if (!env_use)
2695 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
2695, __func__)
;
2696
2697 /* Let the parent know that we are ready and
2698 * wait until the parent is ready with the
2699 * setup, too... */
2700 if (!barrier_place_and_sync(barrier)) { /* #5 */
2701 log_error("Parent died too early")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2701, __func__, "Parent died too early"
) : -abs(_e); })
;
2702 return -ESRCH3;
2703 }
2704
2705 if (arg_chdir)
2706 if (chdir(arg_chdir) < 0)
2707 return log_error_errno(errno, "Failed to change to specified working directory %s: %m", arg_chdir)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2707, __func__
, "Failed to change to specified working directory %s: %m", arg_chdir
) : -abs(_e); })
;
2708
2709 if (arg_start_mode == START_PID2) {
2710 r = stub_pid1(arg_uuid);
2711 if (r < 0)
2712 return r;
2713 }
2714
2715 /* Now, explicitly close the log, so that we then can close all remaining fds. Closing the log explicitly first
2716 * has the benefit that the logging subsystem knows about it, and is thus ready to be reopened should we need
2717 * it again. Note that the other fds closed here are at least the locking and barrier fds. */
2718 log_close();
2719 log_set_open_when_needed(true1);
2720
2721 (void) fdset_close_others(fds);
2722
2723 if (arg_start_mode == START_BOOT) {
2724 char **a;
2725 size_t m;
2726
2727 /* Automatically search for the init system */
2728
2729 m = strv_length(arg_parameters);
2730 a = newa(char*, m + 2)({ do { if ((__builtin_expect(!!(!(!size_multiply_overflow(sizeof
(char*), m + 2))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("!size_multiply_overflow(sizeof(char*), m + 2)"), "../src/nspawn/nspawn.c"
, 2730, __PRETTY_FUNCTION__); } while (0); (char**) __builtin_alloca
(sizeof(char*)*(m + 2)); })
;
2731 memcpy_safe(a + 1, arg_parameters, m * sizeof(char*));
2732 a[1 + m] = NULL((void*)0);
2733
2734 a[0] = (char*) "/usr/lib/systemd/systemd";
2735 execve(a[0], a, env_use);
2736
2737 a[0] = (char*) "/lib/systemd/systemd";
2738 execve(a[0], a, env_use);
2739
2740 a[0] = (char*) "/sbin/init";
2741 execve(a[0], a, env_use);
2742
2743 exec_target = "/usr/lib/systemd/systemd, /lib/systemd/systemd, /sbin/init";
2744 } else if (!strv_isempty(arg_parameters)) {
2745 exec_target = arg_parameters[0];
2746 execvpe(arg_parameters[0], arg_parameters, env_use);
2747 } else {
2748 if (!arg_chdir)
2749 /* If we cannot change the directory, we'll end up in /, that is expected. */
2750 (void) chdir(home ?: "/root");
2751
2752 execle("/bin/bash", "-bash", NULL((void*)0), env_use);
2753 execle("/bin/sh", "-sh", NULL((void*)0), env_use);
2754
2755 exec_target = "/bin/bash, /bin/sh";
2756 }
2757
2758 return log_error_errno(errno, "execv(%s) failed: %m", exec_target)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2758, __func__
, "execv(%s) failed: %m", exec_target) : -abs(_e); })
;
2759}
2760
2761static int setup_sd_notify_child(void) {
2762 static const int one = 1;
2763 int fd = -1;
2764 union sockaddr_union sa = {
2765 .sa.sa_family = AF_UNIX1,
2766 };
2767 int r;
2768
2769 fd = socket(AF_UNIX1, SOCK_DGRAMSOCK_DGRAM|SOCK_CLOEXECSOCK_CLOEXEC|SOCK_NONBLOCKSOCK_NONBLOCK, 0);
2770 if (fd < 0)
2771 return log_error_errno(errno, "Failed to allocate notification socket: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2771, __func__
, "Failed to allocate notification socket: %m") : -abs(_e); }
)
;
2772
2773 (void) mkdir_parents(NSPAWN_NOTIFY_SOCKET_PATH"/run/systemd/nspawn/notify", 0755);
2774 (void) unlink(NSPAWN_NOTIFY_SOCKET_PATH"/run/systemd/nspawn/notify");
2775
2776 strncpy(sa.un.sun_path, NSPAWN_NOTIFY_SOCKET_PATH"/run/systemd/nspawn/notify", sizeof(sa.un.sun_path)-1);
2777 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)({ const struct sockaddr_un *_sa = &(sa.un); do { if ((__builtin_expect
(!!(!(_sa->sun_family == 1)),0))) log_assert_failed_realm(
LOG_REALM_SYSTEMD, ("_sa->sun_family == AF_UNIX"), "../src/nspawn/nspawn.c"
, 2777, __PRETTY_FUNCTION__); } while (0); __builtin_offsetof
(struct sockaddr_un, sun_path) + (_sa->sun_path[0] == 0 ? 1
+ strnlen(_sa->sun_path+1, sizeof(_sa->sun_path)-1) : strnlen
(_sa->sun_path, sizeof(_sa->sun_path))); })
);
2778 if (r < 0) {
2779 safe_close(fd);
2780 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2780, __func__
, "bind(%s) failed: %m", sa.un.sun_path) : -abs(_e); })
;
2781 }
2782
2783 r = userns_lchown(NSPAWN_NOTIFY_SOCKET_PATH"/run/systemd/nspawn/notify", 0, 0);
2784 if (r < 0) {
2785 safe_close(fd);
2786 return log_error_errno(r, "Failed to chown " NSPAWN_NOTIFY_SOCKET_PATH ": %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2786, __func__, "Failed to chown "
"/run/systemd/nspawn/notify" ": %m") : -abs(_e); })
;
2787 }
2788
2789 r = setsockopt(fd, SOL_SOCKET1, SO_PASSCRED16, &one, sizeof(one));
2790 if (r < 0) {
2791 safe_close(fd);
2792 return log_error_errno(errno, "SO_PASSCRED failed: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2792, __func__
, "SO_PASSCRED failed: %m") : -abs(_e); })
;
2793 }
2794
2795 return fd;
2796}
2797
2798static int outer_child(
2799 Barrier *barrier,
2800 const char *directory,
2801 const char *console,
2802 DissectedImage *dissected_image,
2803 bool_Bool interactive,
2804 bool_Bool secondary,
2805 int pid_socket,
2806 int uuid_socket,
2807 int notify_socket,
2808 int kmsg_socket,
2809 int rtnl_socket,
2810 int uid_shift_socket,
2811 int unified_cgroup_hierarchy_socket,
2812 FDSet *fds,
2813 int netns_fd) {
2814
2815 _cleanup_close___attribute__((cleanup(closep))) int fd = -1;
2816 int r, which_failed;
2817 pid_t pid;
2818 ssize_t l;
2819
2820 assert(barrier)do { if ((__builtin_expect(!!(!(barrier)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("barrier"), "../src/nspawn/nspawn.c", 2820
, __PRETTY_FUNCTION__); } while (0)
;
2821 assert(directory)do { if ((__builtin_expect(!!(!(directory)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("directory"), "../src/nspawn/nspawn.c", 2821
, __PRETTY_FUNCTION__); } while (0)
;
2822 assert(console)do { if ((__builtin_expect(!!(!(console)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("console"), "../src/nspawn/nspawn.c", 2822
, __PRETTY_FUNCTION__); } while (0)
;
2823 assert(pid_socket >= 0)do { if ((__builtin_expect(!!(!(pid_socket >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("pid_socket >= 0"), "../src/nspawn/nspawn.c"
, 2823, __PRETTY_FUNCTION__); } while (0)
;
2824 assert(uuid_socket >= 0)do { if ((__builtin_expect(!!(!(uuid_socket >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("uuid_socket >= 0"), "../src/nspawn/nspawn.c"
, 2824, __PRETTY_FUNCTION__); } while (0)
;
2825 assert(notify_socket >= 0)do { if ((__builtin_expect(!!(!(notify_socket >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("notify_socket >= 0"), "../src/nspawn/nspawn.c"
, 2825, __PRETTY_FUNCTION__); } while (0)
;
2826 assert(kmsg_socket >= 0)do { if ((__builtin_expect(!!(!(kmsg_socket >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("kmsg_socket >= 0"), "../src/nspawn/nspawn.c"
, 2826, __PRETTY_FUNCTION__); } while (0)
;
2827
2828 if (prctl(PR_SET_PDEATHSIG1, SIGKILL9) < 0)
2829 return log_error_errno(errno, "PR_SET_PDEATHSIG failed: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2829, __func__
, "PR_SET_PDEATHSIG failed: %m") : -abs(_e); })
;
2830
2831 if (interactive) {
2832 int terminal;
2833
2834 terminal = open_terminal(console, O_RDWR02);
2835 if (terminal < 0)
2836 return log_error_errno(terminal, "Failed to open console: %m")({ int _level = ((3)), _e = ((terminal)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2836, __func__, "Failed to open console: %m"
) : -abs(_e); })
;
2837
2838 /* Make sure we can continue logging to the original stderr, even if stderr points elsewhere now */
2839 r = log_dup_console();
2840 if (r < 0)
2841 return log_error_errno(r, "Failed to duplicate stderr: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2841, __func__, "Failed to duplicate stderr: %m"
) : -abs(_e); })
;
2842
2843 r = rearrange_stdio(terminal, terminal, terminal); /* invalidates 'terminal' on success and failure */
2844 if (r < 0)
2845 return log_error_errno(r, "Failed to move console to stdin/stdout/stderr: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2845, __func__, "Failed to move console to stdin/stdout/stderr: %m"
) : -abs(_e); })
;
2846 }
2847
2848 r = reset_audit_loginuid();
2849 if (r < 0)
2850 return r;
2851
2852 /* Mark everything as slave, so that we still
2853 * receive mounts from the real root, but don't
2854 * propagate mounts to the real root. */
2855 r = mount_verbose(LOG_ERR3, NULL((void*)0), "/", NULL((void*)0), MS_SLAVEMS_SLAVE|MS_RECMS_REC, NULL((void*)0));
2856 if (r < 0)
2857 return r;
2858
2859 if (dissected_image) {
2860 /* If we are operating on a disk image, then mount its root directory now, but leave out the rest. We
2861 * can read the UID shift from it if we need to. Further down we'll mount the rest, but then with the
2862 * uid shift known. That way we can mount VFAT file systems shifted to the right place right away. This
2863 * makes sure ESP partitions and userns are compatible. */
2864
2865 r = dissected_image_mount(dissected_image, directory, arg_uid_shift,
2866 DISSECT_IMAGE_MOUNT_ROOT_ONLY|DISSECT_IMAGE_DISCARD_ON_LOOP|
2867 (arg_read_only ? DISSECT_IMAGE_READ_ONLY : 0)|
2868 (arg_start_mode == START_BOOT ? DISSECT_IMAGE_VALIDATE_OS : 0));
2869 if (r < 0)
2870 return r;
2871 }
2872
2873 r = determine_uid_shift(directory);
2874 if (r < 0)
2875 return r;
2876
2877 if (arg_userns_mode != USER_NAMESPACE_NO) {
2878 /* Let the parent know which UID shift we read from the image */
2879 l = send(uid_shift_socket, &arg_uid_shift, sizeof(arg_uid_shift), MSG_NOSIGNALMSG_NOSIGNAL);
2880 if (l < 0)
2881 return log_error_errno(errno, "Failed to send UID shift: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2881, __func__
, "Failed to send UID shift: %m") : -abs(_e); })
;
2882 if (l != sizeof(arg_uid_shift)) {
2883 log_error("Short write while sending UID shift.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2883, __func__, "Short write while sending UID shift."
) : -abs(_e); })
;
2884 return -EIO5;
2885 }
2886
2887 if (arg_userns_mode == USER_NAMESPACE_PICK) {
2888 /* When we are supposed to pick the UID shift, the parent will check now whether the UID shift
2889 * we just read from the image is available. If yes, it will send the UID shift back to us, if
2890 * not it will pick a different one, and send it back to us. */
2891
2892 l = recv(uid_shift_socket, &arg_uid_shift, sizeof(arg_uid_shift), 0);
2893 if (l < 0)
2894 return log_error_errno(errno, "Failed to recv UID shift: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2894, __func__
, "Failed to recv UID shift: %m") : -abs(_e); })
;
2895 if (l != sizeof(arg_uid_shift)) {
2896 log_error("Short read while receiving UID shift.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2896, __func__, "Short read while receiving UID shift."
) : -abs(_e); })
;
2897 return -EIO5;
2898 }
2899 }
2900
2901 log_info("Selected user namespace base " UID_FMT " and range " UID_FMT ".", arg_uid_shift, arg_uid_range)({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2901, __func__, "Selected user namespace base "
"%" "u" " and range " "%" "u" ".", arg_uid_shift, arg_uid_range
) : -abs(_e); })
;
2902 }
2903
2904 if (dissected_image) {
2905 /* Now we know the uid shift, let's now mount everything else that might be in the image. */
2906 r = dissected_image_mount(dissected_image, directory, arg_uid_shift,
2907 DISSECT_IMAGE_MOUNT_NON_ROOT_ONLY|DISSECT_IMAGE_DISCARD_ON_LOOP|(arg_read_only ? DISSECT_IMAGE_READ_ONLY : 0));
2908 if (r < 0)
2909 return r;
2910 }
2911
2912 if (arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_UNKNOWN) {
2913 /* OK, we don't know yet which cgroup mode to use yet. Let's figure it out, and tell the parent. */
2914
2915 r = detect_unified_cgroup_hierarchy_from_image(directory);
2916 if (r < 0)
2917 return r;
2918
2919 l = send(unified_cgroup_hierarchy_socket, &arg_unified_cgroup_hierarchy, sizeof(arg_unified_cgroup_hierarchy), MSG_NOSIGNALMSG_NOSIGNAL);
2920 if (l < 0)
2921 return log_error_errno(errno, "Failed to send cgroup mode: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 2921, __func__
, "Failed to send cgroup mode: %m") : -abs(_e); })
;
2922 if (l != sizeof(arg_unified_cgroup_hierarchy)) {
2923 log_error("Short write while sending cgroup mode.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2923, __func__, "Short write while sending cgroup mode."
) : -abs(_e); })
;
2924 return -EIO5;
2925 }
2926
2927 unified_cgroup_hierarchy_socket = safe_close(unified_cgroup_hierarchy_socket);
2928 }
2929
2930 /* Turn directory into bind mount */
2931 r = mount_verbose(LOG_ERR3, directory, directory, NULL((void*)0), MS_BINDMS_BIND|MS_RECMS_REC, NULL((void*)0));
2932 if (r < 0)
2933 return r;
2934
2935 r = setup_pivot_root(
2936 directory,
2937 arg_pivot_root_new,
2938 arg_pivot_root_old);
2939 if (r < 0)
2940 return r;
2941
2942 r = setup_volatile(
2943 directory,
2944 arg_volatile_mode,
2945 arg_userns_mode != USER_NAMESPACE_NO,
2946 arg_uid_shift,
2947 arg_uid_range,
2948 arg_selinux_context);
2949 if (r < 0)
2950 return r;
2951
2952 r = setup_volatile_state(
2953 directory,
2954 arg_volatile_mode,
2955 arg_userns_mode != USER_NAMESPACE_NO,
2956 arg_uid_shift,
2957 arg_uid_range,
2958 arg_selinux_context);
2959 if (r < 0)
2960 return r;
2961
2962 /* Mark everything as shared so our mounts get propagated down. This is
2963 * required to make new bind mounts available in systemd services
2964 * inside the containter that create a new mount namespace.
2965 * See https://github.com/systemd/systemd/issues/3860
2966 * Further submounts (such as /dev) done after this will inherit the
2967 * shared propagation mode. */
2968 r = mount_verbose(LOG_ERR3, NULL((void*)0), directory, NULL((void*)0), MS_SHAREDMS_SHARED|MS_RECMS_REC, NULL((void*)0));
2969 if (r < 0)
2970 return r;
2971
2972 r = recursive_chown(directory, arg_uid_shift, arg_uid_range);
2973 if (r < 0)
2974 return r;
2975
2976 r = base_filesystem_create(directory, arg_uid_shift, (gid_t) arg_uid_shift);
2977 if (r < 0)
2978 return r;
2979
2980 if (arg_read_only) {
2981 r = bind_remount_recursive(directory, true1, NULL((void*)0));
2982 if (r < 0)
2983 return log_error_errno(r, "Failed to make tree read-only: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 2983, __func__, "Failed to make tree read-only: %m"
) : -abs(_e); })
;
2984 }
2985
2986 r = mount_all(directory,
2987 arg_mount_settings,
2988 arg_uid_shift,
2989 arg_uid_range,
2990 arg_selinux_apifs_context);
2991 if (r < 0)
2992 return r;
2993
2994 r = copy_devnodes(directory);
2995 if (r < 0)
2996 return r;
2997
2998 dev_setup(directory, arg_uid_shift, arg_uid_shift);
2999
3000 r = setup_pts(directory);
3001 if (r < 0)
3002 return r;
3003
3004 r = setup_propagate(directory);
3005 if (r < 0)
3006 return r;
3007
3008 r = setup_dev_console(directory, console);
3009 if (r < 0)
3010 return r;
3011
3012 r = setup_keyring();
3013 if (r < 0)
3014 return r;
3015
3016 r = setup_seccomp(arg_caps_retain, arg_syscall_whitelist, arg_syscall_blacklist);
3017 if (r < 0)
3018 return r;
3019
3020 r = setup_timezone(directory);
3021 if (r < 0)
3022 return r;
3023
3024 r = setup_resolv_conf(directory);
3025 if (r < 0)
3026 return r;
3027
3028 r = setup_machine_id(directory);
3029 if (r < 0)
3030 return r;
3031
3032 r = setup_journal(directory);
3033 if (r < 0)
3034 return r;
3035
3036 r = mount_custom(
3037 directory,
3038 arg_custom_mounts,
3039 arg_n_custom_mounts,
3040 arg_userns_mode != USER_NAMESPACE_NO,
3041 arg_uid_shift,
3042 arg_uid_range,
3043 arg_selinux_apifs_context);
3044 if (r < 0)
3045 return r;
3046
3047 if (!arg_use_cgns || !cg_ns_supported()) {
3048 r = mount_cgroups(
3049 directory,
3050 arg_unified_cgroup_hierarchy,
3051 arg_userns_mode != USER_NAMESPACE_NO,
3052 arg_uid_shift,
3053 arg_uid_range,
3054 arg_selinux_apifs_context,
3055 false0);
3056 if (r < 0)
3057 return r;
3058 }
3059
3060 r = mount_move_root(directory);
3061 if (r < 0)
3062 return log_error_errno(r, "Failed to move root directory: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3062, __func__, "Failed to move root directory: %m"
) : -abs(_e); })
;
3063
3064 fd = setup_sd_notify_child();
3065 if (fd < 0)
3066 return fd;
3067
3068 r = setrlimit_closest_all((const struct rlimit *const*) arg_rlimit, &which_failed);
3069 if (r < 0)
3070 return log_error_errno(r, "Failed to apply resource limit RLIMIT_%s: %m", rlimit_to_string(which_failed))({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3070, __func__, "Failed to apply resource limit RLIMIT_%s: %m"
, rlimit_to_string(which_failed)) : -abs(_e); })
;
3071
3072 pid = raw_clone(SIGCHLD17|CLONE_NEWNS0x00020000|
3073 arg_clone_ns_flags |
3074 (arg_userns_mode != USER_NAMESPACE_NO ? CLONE_NEWUSER0x10000000 : 0));
3075 if (pid < 0)
3076 return log_error_errno(errno, "Failed to fork inner child: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3076, __func__
, "Failed to fork inner child: %m") : -abs(_e); })
;
3077 if (pid == 0) {
3078 pid_socket = safe_close(pid_socket);
Value stored to 'pid_socket' is never read
3079 uuid_socket = safe_close(uuid_socket);
3080 notify_socket = safe_close(notify_socket);
3081 uid_shift_socket = safe_close(uid_shift_socket);
3082
3083 /* The inner child has all namespaces that are
3084 * requested, so that we all are owned by the user if
3085 * user namespaces are turned on. */
3086
3087 if (arg_network_namespace_path) {
3088 r = namespace_enter(-1, -1, netns_fd, -1, -1);
3089 if (r < 0)
3090 return r;
3091 }
3092
3093 r = inner_child(barrier, directory, secondary, kmsg_socket, rtnl_socket, fds);
3094 if (r < 0)
3095 _exit(EXIT_FAILURE1);
3096
3097 _exit(EXIT_SUCCESS0);
3098 }
3099
3100 l = send(pid_socket, &pid, sizeof(pid), MSG_NOSIGNALMSG_NOSIGNAL);
3101 if (l < 0)
3102 return log_error_errno(errno, "Failed to send PID: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3102, __func__
, "Failed to send PID: %m") : -abs(_e); })
;
3103 if (l != sizeof(pid)) {
3104 log_error("Short write while sending PID.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3104, __func__, "Short write while sending PID."
) : -abs(_e); })
;
3105 return -EIO5;
3106 }
3107
3108 l = send(uuid_socket, &arg_uuid, sizeof(arg_uuid), MSG_NOSIGNALMSG_NOSIGNAL);
3109 if (l < 0)
3110 return log_error_errno(errno, "Failed to send machine ID: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3110, __func__
, "Failed to send machine ID: %m") : -abs(_e); })
;
3111 if (l != sizeof(arg_uuid)) {
3112 log_error("Short write while sending machine ID.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3112, __func__, "Short write while sending machine ID."
) : -abs(_e); })
;
3113 return -EIO5;
3114 }
3115
3116 l = send_one_fd(notify_socket, fd, 0)send_one_fd_iov_sa(notify_socket, fd, ((void*)0), 0, ((void*)
0), 0, 0)
;
3117 if (l < 0)
3118 return log_error_errno(errno, "Failed to send notify fd: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3118, __func__
, "Failed to send notify fd: %m") : -abs(_e); })
;
3119
3120 pid_socket = safe_close(pid_socket);
3121 uuid_socket = safe_close(uuid_socket);
3122 notify_socket = safe_close(notify_socket);
3123 kmsg_socket = safe_close(kmsg_socket);
3124 rtnl_socket = safe_close(rtnl_socket);
3125 netns_fd = safe_close(netns_fd);
3126
3127 return 0;
3128}
3129
3130static int uid_shift_pick(uid_t *shift, LockFile *ret_lock_file) {
3131 bool_Bool tried_hashed = false0;
3132 unsigned n_tries = 100;
3133 uid_t candidate;
3134 int r;
3135
3136 assert(shift)do { if ((__builtin_expect(!!(!(shift)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("shift"), "../src/nspawn/nspawn.c", 3136
, __PRETTY_FUNCTION__); } while (0)
;
3137 assert(ret_lock_file)do { if ((__builtin_expect(!!(!(ret_lock_file)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("ret_lock_file"), "../src/nspawn/nspawn.c"
, 3137, __PRETTY_FUNCTION__); } while (0)
;
3138 assert(arg_userns_mode == USER_NAMESPACE_PICK)do { if ((__builtin_expect(!!(!(arg_userns_mode == USER_NAMESPACE_PICK
)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("arg_userns_mode == USER_NAMESPACE_PICK"
), "../src/nspawn/nspawn.c", 3138, __PRETTY_FUNCTION__); } while
(0)
;
3139 assert(arg_uid_range == 0x10000U)do { if ((__builtin_expect(!!(!(arg_uid_range == 0x10000U)),0
))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("arg_uid_range == 0x10000U"
), "../src/nspawn/nspawn.c", 3139, __PRETTY_FUNCTION__); } while
(0)
;
3140
3141 candidate = *shift;
3142
3143 (void) mkdir("/run/systemd/nspawn-uid", 0755);
3144
3145 for (;;) {
3146 char lock_path[STRLEN("/run/systemd/nspawn-uid/")(sizeof("""/run/systemd/nspawn-uid/""") - 1) + DECIMAL_STR_MAX(uid_t)(2+(sizeof(uid_t) <= 1 ? 3 : sizeof(uid_t) <= 2 ? 5 : sizeof
(uid_t) <= 4 ? 10 : sizeof(uid_t) <= 8 ? 20 : sizeof(int
[-2*(sizeof(uid_t) > 8)])))
+ 1];
3147 _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile lf = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) };
3148
3149 if (--n_tries <= 0)
3150 return -EBUSY16;
3151
3152 if (candidate < CONTAINER_UID_BASE_MIN524288 || candidate > CONTAINER_UID_BASE_MAX1878982656)
3153 goto next;
3154 if ((candidate & UINT32_C(0xFFFF)0xFFFFU) != 0)
3155 goto next;
3156
3157 xsprintf(lock_path, "/run/systemd/nspawn-uid/" UID_FMT, candidate)do { if ((__builtin_expect(!!(!(((size_t) snprintf(lock_path,
__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(lock_path), typeof(&*(lock_path))), sizeof(lock_path
)/sizeof((lock_path)[0]), ((void)0))), "/run/systemd/nspawn-uid/"
"%" "u", candidate) < (__extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(lock_path), typeof(&
*(lock_path))), sizeof(lock_path)/sizeof((lock_path)[0]), ((void
)0))))))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("xsprintf: "
"lock_path" "[] must be big enough"), "../src/nspawn/nspawn.c"
, 3157, __PRETTY_FUNCTION__); } while (0)
;
3158 r = make_lock_file(lock_path, LOCK_EX2|LOCK_NB4, &lf);
3159 if (r == -EBUSY16) /* Range already taken by another nspawn instance */
3160 goto next;
3161 if (r < 0)
3162 return r;
3163
3164 /* Make some superficial checks whether the range is currently known in the user database */
3165 if (getpwuid(candidate))
3166 goto next;
3167 if (getpwuid(candidate + UINT32_C(0xFFFE)0xFFFEU))
3168 goto next;
3169 if (getgrgid(candidate))
3170 goto next;
3171 if (getgrgid(candidate + UINT32_C(0xFFFE)0xFFFEU))
3172 goto next;
3173
3174 *ret_lock_file = lf;
3175 lf = (struct LockFile) LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) };
3176 *shift = candidate;
3177 return 0;
3178
3179 next:
3180 if (arg_machine && !tried_hashed) {
3181 /* Try to hash the base from the container name */
3182
3183 static const uint8_t hash_key[] = {
3184 0xe1, 0x56, 0xe0, 0xf0, 0x4a, 0xf0, 0x41, 0xaf,
3185 0x96, 0x41, 0xcf, 0x41, 0x33, 0x94, 0xff, 0x72
3186 };
3187
3188 candidate = (uid_t) siphash24(arg_machine, strlen(arg_machine), hash_key);
3189
3190 tried_hashed = true1;
3191 } else
3192 random_bytes(&candidate, sizeof(candidate));
3193
3194 candidate = (candidate % (CONTAINER_UID_BASE_MAX1878982656 - CONTAINER_UID_BASE_MIN524288)) + CONTAINER_UID_BASE_MIN524288;
3195 candidate &= (uid_t) UINT32_C(0xFFFF0000)0xFFFF0000U;
3196 }
3197}
3198
3199static int setup_uid_map(pid_t pid) {
3200 char uid_map[STRLEN("/proc//uid_map")(sizeof("""/proc//uid_map""") - 1) + DECIMAL_STR_MAX(uid_t)(2+(sizeof(uid_t) <= 1 ? 3 : sizeof(uid_t) <= 2 ? 5 : sizeof
(uid_t) <= 4 ? 10 : sizeof(uid_t) <= 8 ? 20 : sizeof(int
[-2*(sizeof(uid_t) > 8)])))
+ 1], line[DECIMAL_STR_MAX(uid_t)(2+(sizeof(uid_t) <= 1 ? 3 : sizeof(uid_t) <= 2 ? 5 : sizeof
(uid_t) <= 4 ? 10 : sizeof(uid_t) <= 8 ? 20 : sizeof(int
[-2*(sizeof(uid_t) > 8)])))
*3+3+1];
3201 int r;
3202
3203 assert(pid > 1)do { if ((__builtin_expect(!!(!(pid > 1)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("pid > 1"), "../src/nspawn/nspawn.c",
3203, __PRETTY_FUNCTION__); } while (0)
;
3204
3205 xsprintf(uid_map, "/proc/" PID_FMT "/uid_map", pid)do { if ((__builtin_expect(!!(!(((size_t) snprintf(uid_map, __extension__
(__builtin_choose_expr( !__builtin_types_compatible_p(typeof
(uid_map), typeof(&*(uid_map))), sizeof(uid_map)/sizeof((
uid_map)[0]), ((void)0))), "/proc/" "%" "i" "/uid_map", pid) <
(__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(uid_map), typeof(&*(uid_map))), sizeof(uid_map)/sizeof
((uid_map)[0]), ((void)0))))))),0))) log_assert_failed_realm(
LOG_REALM_SYSTEMD, ("xsprintf: " "uid_map" "[] must be big enough"
), "../src/nspawn/nspawn.c", 3205, __PRETTY_FUNCTION__); } while
(0)
;
3206 xsprintf(line, UID_FMT " " UID_FMT " " UID_FMT "\n", 0, arg_uid_shift, arg_uid_range)do { if ((__builtin_expect(!!(!(((size_t) snprintf(line, __extension__
(__builtin_choose_expr( !__builtin_types_compatible_p(typeof
(line), typeof(&*(line))), sizeof(line)/sizeof((line)[0])
, ((void)0))), "%" "u" " " "%" "u" " " "%" "u" "\n", 0, arg_uid_shift
, arg_uid_range) < (__extension__ (__builtin_choose_expr( !
__builtin_types_compatible_p(typeof(line), typeof(&*(line
))), sizeof(line)/sizeof((line)[0]), ((void)0))))))),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("xsprintf: " "line" "[] must be big enough"
), "../src/nspawn/nspawn.c", 3206, __PRETTY_FUNCTION__); } while
(0)
;
3207 r = write_string_file(uid_map, line, 0);
3208 if (r < 0)
3209 return log_error_errno(r, "Failed to write UID map: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3209, __func__, "Failed to write UID map: %m"
) : -abs(_e); })
;
3210
3211 /* We always assign the same UID and GID ranges */
3212 xsprintf(uid_map, "/proc/" PID_FMT "/gid_map", pid)do { if ((__builtin_expect(!!(!(((size_t) snprintf(uid_map, __extension__
(__builtin_choose_expr( !__builtin_types_compatible_p(typeof
(uid_map), typeof(&*(uid_map))), sizeof(uid_map)/sizeof((
uid_map)[0]), ((void)0))), "/proc/" "%" "i" "/gid_map", pid) <
(__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(uid_map), typeof(&*(uid_map))), sizeof(uid_map)/sizeof
((uid_map)[0]), ((void)0))))))),0))) log_assert_failed_realm(
LOG_REALM_SYSTEMD, ("xsprintf: " "uid_map" "[] must be big enough"
), "../src/nspawn/nspawn.c", 3212, __PRETTY_FUNCTION__); } while
(0)
;
3213 r = write_string_file(uid_map, line, 0);
3214 if (r < 0)
3215 return log_error_errno(r, "Failed to write GID map: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3215, __func__, "Failed to write GID map: %m"
) : -abs(_e); })
;
3216
3217 return 0;
3218}
3219
3220static int nspawn_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
3221 char buf[NOTIFY_BUFFER_MAX4096+1];
3222 char *p = NULL((void*)0);
3223 struct iovec iovec = {
3224 .iov_base = buf,
3225 .iov_len = sizeof(buf)-1,
3226 };
3227 union {
3228 struct cmsghdr cmsghdr;
3229 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))((((sizeof(struct ucred)) + sizeof (size_t) - 1) & (size_t
) ~(sizeof (size_t) - 1)) + (((sizeof (struct cmsghdr)) + sizeof
(size_t) - 1) & (size_t) ~(sizeof (size_t) - 1)))
+
3230 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)((((sizeof(int) * 768) + sizeof (size_t) - 1) & (size_t) ~
(sizeof (size_t) - 1)) + (((sizeof (struct cmsghdr)) + sizeof
(size_t) - 1) & (size_t) ~(sizeof (size_t) - 1)))
];
3231 } control = {};
3232 struct msghdr msghdr = {
3233 .msg_iov = &iovec,
3234 .msg_iovlen = 1,
3235 .msg_control = &control,
3236 .msg_controllen = sizeof(control),
3237 };
3238 struct cmsghdr *cmsg;
3239 struct ucred *ucred = NULL((void*)0);
3240 ssize_t n;
3241 pid_t inner_child_pid;
3242 _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **tags = NULL((void*)0);
3243
3244 assert(userdata)do { if ((__builtin_expect(!!(!(userdata)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("userdata"), "../src/nspawn/nspawn.c", 3244
, __PRETTY_FUNCTION__); } while (0)
;
3245
3246 inner_child_pid = PTR_TO_PID(userdata);
3247
3248 if (revents != EPOLLINEPOLLIN) {
3249 log_warning("Got unexpected poll event for notify fd.")({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3249, __func__, "Got unexpected poll event for notify fd."
) : -abs(_e); })
;
3250 return 0;
3251 }
3252
3253 n = recvmsg(fd, &msghdr, MSG_DONTWAITMSG_DONTWAIT|MSG_CMSG_CLOEXECMSG_CMSG_CLOEXEC);
3254 if (n < 0) {
3255 if (IN_SET(errno, EAGAIN, EINTR)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){11, 4})/sizeof(int)]; switch((*__errno_location
())) { case 11: case 4: _found = 1; break; default: break; }
_found; })
)
3256 return 0;
3257
3258 return log_warning_errno(errno, "Couldn't read notification socket: %m")({ int _level = ((4)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3258, __func__
, "Couldn't read notification socket: %m") : -abs(_e); })
;
3259 }
3260 cmsg_close_all(&msghdr);
3261
3262 CMSG_FOREACH(cmsg, &msghdr)for ((cmsg) = ((size_t) (&msghdr)->msg_controllen >=
sizeof (struct cmsghdr) ? (struct cmsghdr *) (&msghdr)->
msg_control : (struct cmsghdr *) 0); (cmsg); (cmsg) = __cmsg_nxthdr
((&msghdr), (cmsg)))
{
3263 if (cmsg->cmsg_level == SOL_SOCKET1 &&
3264 cmsg->cmsg_type == SCM_CREDENTIALSSCM_CREDENTIALS &&
3265 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))((((sizeof (struct cmsghdr)) + sizeof (size_t) - 1) & (size_t
) ~(sizeof (size_t) - 1)) + (sizeof(struct ucred)))
) {
3266
3267 ucred = (struct ucred*) CMSG_DATA(cmsg)((cmsg)->__cmsg_data);
3268 }
3269 }
3270
3271 if (!ucred || ucred->pid != inner_child_pid) {
3272 log_debug("Received notify message without valid credentials. Ignoring.")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3272, __func__, "Received notify message without valid credentials. Ignoring."
) : -abs(_e); })
;
3273 return 0;
3274 }
3275
3276 if ((size_t) n >= sizeof(buf)) {
3277 log_warning("Received notify message exceeded maximum size. Ignoring.")({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3277, __func__, "Received notify message exceeded maximum size. Ignoring."
) : -abs(_e); })
;
3278 return 0;
3279 }
3280
3281 buf[n] = 0;
3282 tags = strv_split(buf, "\n\r");
3283 if (!tags)
3284 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
3284, __func__)
;
3285
3286 if (strv_find(tags, "READY=1"))
3287 sd_notifyf(false0, "READY=1\n");
3288
3289 p = strv_find_startswith(tags, "STATUS=");
3290 if (p)
3291 sd_notifyf(false0, "STATUS=Container running: %s", p);
3292
3293 return 0;
3294}
3295
3296static int setup_sd_notify_parent(sd_event *event, int fd, pid_t *inner_child_pid, sd_event_source **notify_event_source) {
3297 int r;
3298
3299 r = sd_event_add_io(event, notify_event_source, fd, EPOLLINEPOLLIN, nspawn_dispatch_notify_fd, inner_child_pid);
3300 if (r < 0)
3301 return log_error_errno(r, "Failed to allocate notify event source: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3301, __func__, "Failed to allocate notify event source: %m"
) : -abs(_e); })
;
3302
3303 (void) sd_event_source_set_description(*notify_event_source, "nspawn-notify");
3304
3305 return 0;
3306}
3307
3308static int merge_settings(Settings *settings, const char *path) {
3309 int rl;
3310
3311 assert(settings)do { if ((__builtin_expect(!!(!(settings)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("settings"), "../src/nspawn/nspawn.c", 3311
, __PRETTY_FUNCTION__); } while (0)
;
3312 assert(path)do { if ((__builtin_expect(!!(!(path)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("path"), "../src/nspawn/nspawn.c", 3312,
__PRETTY_FUNCTION__); } while (0)
;
3313
3314 /* Copy over bits from the settings, unless they have been explicitly masked by command line switches. Note
3315 * that this steals the fields of the Settings* structure, and hence modifies it. */
3316
3317 if ((arg_settings_mask & SETTING_START_MODE) == 0 &&
3318 settings->start_mode >= 0) {
3319 arg_start_mode = settings->start_mode;
3320 strv_free_and_replace(arg_parameters, settings->parameters)({ strv_free(arg_parameters); (arg_parameters) = (settings->
parameters); (settings->parameters) = ((void*)0); 0; })
;
3321 }
3322
3323 if ((arg_settings_mask & SETTING_PIVOT_ROOT) == 0 &&
3324 settings->pivot_root_new) {
3325 free_and_replace(arg_pivot_root_new, settings->pivot_root_new)({ free(arg_pivot_root_new); (arg_pivot_root_new) = (settings
->pivot_root_new); (settings->pivot_root_new) = ((void*
)0); 0; })
;
3326 free_and_replace(arg_pivot_root_old, settings->pivot_root_old)({ free(arg_pivot_root_old); (arg_pivot_root_old) = (settings
->pivot_root_old); (settings->pivot_root_old) = ((void*
)0); 0; })
;
3327 }
3328
3329 if ((arg_settings_mask & SETTING_WORKING_DIRECTORY) == 0 &&
3330 settings->working_directory)
3331 free_and_replace(arg_chdir, settings->working_directory)({ free(arg_chdir); (arg_chdir) = (settings->working_directory
); (settings->working_directory) = ((void*)0); 0; })
;
3332
3333 if ((arg_settings_mask & SETTING_ENVIRONMENT) == 0 &&
3334 settings->environment)
3335 strv_free_and_replace(arg_setenv, settings->environment)({ strv_free(arg_setenv); (arg_setenv) = (settings->environment
); (settings->environment) = ((void*)0); 0; })
;
3336
3337 if ((arg_settings_mask & SETTING_USER) == 0 &&
3338 settings->user)
3339 free_and_replace(arg_user, settings->user)({ free(arg_user); (arg_user) = (settings->user); (settings
->user) = ((void*)0); 0; })
;
3340
3341 if ((arg_settings_mask & SETTING_CAPABILITY) == 0) {
3342 uint64_t plus;
3343
3344 plus = settings->capability;
3345 if (settings_private_network(settings))
3346 plus |= (1ULL << CAP_NET_ADMIN12);
3347
3348 if (!arg_settings_trusted && plus != 0) {
3349 if (settings->capability != 0)
3350 log_warning("Ignoring Capability= setting, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3350, __func__, "Ignoring Capability= setting, file %s is not trusted."
, path) : -abs(_e); })
;
3351 } else
3352 arg_caps_retain |= plus;
3353
3354 arg_caps_retain &= ~settings->drop_capability;
3355 }
3356
3357 if ((arg_settings_mask & SETTING_KILL_SIGNAL) == 0 &&
3358 settings->kill_signal > 0)
3359 arg_kill_signal = settings->kill_signal;
3360
3361 if ((arg_settings_mask & SETTING_PERSONALITY) == 0 &&
3362 settings->personality != PERSONALITY_INVALID0xffffffffLU)
3363 arg_personality = settings->personality;
3364
3365 if ((arg_settings_mask & SETTING_MACHINE_ID) == 0 &&
3366 !sd_id128_is_null(settings->machine_id)) {
3367
3368 if (!arg_settings_trusted)
3369 log_warning("Ignoring MachineID= setting, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3369, __func__, "Ignoring MachineID= setting, file %s is not trusted."
, path) : -abs(_e); })
;
3370 else
3371 arg_uuid = settings->machine_id;
3372 }
3373
3374 if ((arg_settings_mask & SETTING_READ_ONLY) == 0 &&
3375 settings->read_only >= 0)
3376 arg_read_only = settings->read_only;
3377
3378 if ((arg_settings_mask & SETTING_VOLATILE_MODE) == 0 &&
3379 settings->volatile_mode != _VOLATILE_MODE_INVALID)
3380 arg_volatile_mode = settings->volatile_mode;
3381
3382 if ((arg_settings_mask & SETTING_CUSTOM_MOUNTS) == 0 &&
3383 settings->n_custom_mounts > 0) {
3384
3385 if (!arg_settings_trusted)
3386 log_warning("Ignoring TemporaryFileSystem=, Bind= and BindReadOnly= settings, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3386, __func__, "Ignoring TemporaryFileSystem=, Bind= and BindReadOnly= settings, file %s is not trusted."
, path) : -abs(_e); })
;
3387 else {
3388 custom_mount_free_all(arg_custom_mounts, arg_n_custom_mounts);
3389 arg_custom_mounts = TAKE_PTR(settings->custom_mounts)({ typeof(settings->custom_mounts) _ptr_ = (settings->custom_mounts
); (settings->custom_mounts) = ((void*)0); _ptr_; })
;
3390 arg_n_custom_mounts = settings->n_custom_mounts;
3391 settings->n_custom_mounts = 0;
3392 }
3393 }
3394
3395 if ((arg_settings_mask & SETTING_NETWORK) == 0 &&
3396 (settings->private_network >= 0 ||
3397 settings->network_veth >= 0 ||
3398 settings->network_bridge ||
3399 settings->network_zone ||
3400 settings->network_interfaces ||
3401 settings->network_macvlan ||
3402 settings->network_ipvlan ||
3403 settings->network_veth_extra)) {
3404
3405 if (!arg_settings_trusted)
3406 log_warning("Ignoring network settings, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3406, __func__, "Ignoring network settings, file %s is not trusted."
, path) : -abs(_e); })
;
3407 else {
3408 arg_network_veth = settings_network_veth(settings);
3409 arg_private_network = settings_private_network(settings);
3410
3411 strv_free_and_replace(arg_network_interfaces, settings->network_interfaces)({ strv_free(arg_network_interfaces); (arg_network_interfaces
) = (settings->network_interfaces); (settings->network_interfaces
) = ((void*)0); 0; })
;
3412 strv_free_and_replace(arg_network_macvlan, settings->network_macvlan)({ strv_free(arg_network_macvlan); (arg_network_macvlan) = (settings
->network_macvlan); (settings->network_macvlan) = ((void
*)0); 0; })
;
3413 strv_free_and_replace(arg_network_ipvlan, settings->network_ipvlan)({ strv_free(arg_network_ipvlan); (arg_network_ipvlan) = (settings
->network_ipvlan); (settings->network_ipvlan) = ((void*
)0); 0; })
;
3414 strv_free_and_replace(arg_network_veth_extra, settings->network_veth_extra)({ strv_free(arg_network_veth_extra); (arg_network_veth_extra
) = (settings->network_veth_extra); (settings->network_veth_extra
) = ((void*)0); 0; })
;
3415
3416 free_and_replace(arg_network_bridge, settings->network_bridge)({ free(arg_network_bridge); (arg_network_bridge) = (settings
->network_bridge); (settings->network_bridge) = ((void*
)0); 0; })
;
3417 free_and_replace(arg_network_zone, settings->network_zone)({ free(arg_network_zone); (arg_network_zone) = (settings->
network_zone); (settings->network_zone) = ((void*)0); 0; }
)
;
3418 }
3419 }
3420
3421 if ((arg_settings_mask & SETTING_EXPOSE_PORTS) == 0 &&
3422 settings->expose_ports) {
3423
3424 if (!arg_settings_trusted)
3425 log_warning("Ignoring Port= setting, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3425, __func__, "Ignoring Port= setting, file %s is not trusted."
, path) : -abs(_e); })
;
3426 else {
3427 expose_port_free_all(arg_expose_ports);
3428 arg_expose_ports = TAKE_PTR(settings->expose_ports)({ typeof(settings->expose_ports) _ptr_ = (settings->expose_ports
); (settings->expose_ports) = ((void*)0); _ptr_; })
;
3429 }
3430 }
3431
3432 if ((arg_settings_mask & SETTING_USERNS) == 0 &&
3433 settings->userns_mode != _USER_NAMESPACE_MODE_INVALID) {
3434
3435 if (!arg_settings_trusted)
3436 log_warning("Ignoring PrivateUsers= and PrivateUsersChown= settings, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3436, __func__, "Ignoring PrivateUsers= and PrivateUsersChown= settings, file %s is not trusted."
, path) : -abs(_e); })
;
3437 else {
3438 arg_userns_mode = settings->userns_mode;
3439 arg_uid_shift = settings->uid_shift;
3440 arg_uid_range = settings->uid_range;
3441 arg_userns_chown = settings->userns_chown;
3442 }
3443 }
3444
3445 if ((arg_settings_mask & SETTING_NOTIFY_READY) == 0)
3446 arg_notify_ready = settings->notify_ready;
3447
3448 if ((arg_settings_mask & SETTING_SYSCALL_FILTER) == 0) {
3449
3450 if (!arg_settings_trusted && !strv_isempty(arg_syscall_whitelist))
3451 log_warning("Ignoring SystemCallFilter= settings, file %s is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3451, __func__, "Ignoring SystemCallFilter= settings, file %s is not trusted."
, path) : -abs(_e); })
;
3452 else {
3453 strv_free_and_replace(arg_syscall_whitelist, settings->syscall_whitelist)({ strv_free(arg_syscall_whitelist); (arg_syscall_whitelist) =
(settings->syscall_whitelist); (settings->syscall_whitelist
) = ((void*)0); 0; })
;
3454 strv_free_and_replace(arg_syscall_blacklist, settings->syscall_blacklist)({ strv_free(arg_syscall_blacklist); (arg_syscall_blacklist) =
(settings->syscall_blacklist); (settings->syscall_blacklist
) = ((void*)0); 0; })
;
3455 }
3456 }
3457
3458 for (rl = 0; rl < _RLIMIT_MAX(__RLIMIT_RTTIME+1 > __RLIMIT_NLIMITS ? __RLIMIT_RTTIME+1 :
__RLIMIT_NLIMITS)
; rl ++) {
3459 if ((arg_settings_mask & (SETTING_RLIMIT_FIRST((uint64_t) SETTING_RLIMIT_FIRST) << rl)))
3460 continue;
3461
3462 if (!settings->rlimit[rl])
3463 continue;
3464
3465 if (!arg_settings_trusted) {
3466 log_warning("Ignoring Limit%s= setting, file '%s' is not trusted.", rlimit_to_string(rl), path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3466, __func__, "Ignoring Limit%s= setting, file '%s' is not trusted."
, rlimit_to_string(rl), path) : -abs(_e); })
;
3467 continue;
3468 }
3469
3470 free_and_replace(arg_rlimit[rl], settings->rlimit[rl])({ free(arg_rlimit[rl]); (arg_rlimit[rl]) = (settings->rlimit
[rl]); (settings->rlimit[rl]) = ((void*)0); 0; })
;
3471 }
3472
3473 if ((arg_settings_mask & SETTING_HOSTNAME) == 0 &&
3474 settings->hostname)
3475 free_and_replace(arg_hostname, settings->hostname)({ free(arg_hostname); (arg_hostname) = (settings->hostname
); (settings->hostname) = ((void*)0); 0; })
;
3476
3477 if ((arg_settings_mask & SETTING_NO_NEW_PRIVILEGES) == 0 &&
3478 settings->no_new_privileges >= 0)
3479 arg_no_new_privileges = settings->no_new_privileges;
3480
3481 if ((arg_settings_mask & SETTING_OOM_SCORE_ADJUST) == 0 &&
3482 settings->oom_score_adjust_set) {
3483
3484 if (!arg_settings_trusted)
3485 log_warning("Ignoring OOMScoreAdjust= setting, file '%s' is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3485, __func__, "Ignoring OOMScoreAdjust= setting, file '%s' is not trusted."
, path) : -abs(_e); })
;
3486 else {
3487 arg_oom_score_adjust = settings->oom_score_adjust;
3488 arg_oom_score_adjust_set = true1;
3489 }
3490 }
3491
3492 if ((arg_settings_mask & SETTING_CPU_AFFINITY) == 0 &&
3493 settings->cpu_set.set) {
3494
3495 if (!arg_settings_trusted)
3496 log_warning("Ignoring CPUAffinity= setting, file '%s' is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3496, __func__, "Ignoring CPUAffinity= setting, file '%s' is not trusted."
, path) : -abs(_e); })
;
3497 else {
3498 cpu_set_reset(&arg_cpu_set);
3499 arg_cpu_set = settings->cpu_set;
3500 settings->cpu_set = (CPUSet) {};
3501 }
3502 }
3503
3504 if ((arg_settings_mask & SETTING_RESOLV_CONF) == 0 &&
3505 settings->resolv_conf != _RESOLV_CONF_MODE_INVALID)
3506 arg_resolv_conf = settings->resolv_conf;
3507
3508 if ((arg_settings_mask & SETTING_LINK_JOURNAL) == 0 &&
3509 settings->link_journal != _LINK_JOURNAL_INVALID) {
3510
3511 if (!arg_settings_trusted)
3512 log_warning("Ignoring journal link setting, file '%s' is not trusted.", path)({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3512, __func__, "Ignoring journal link setting, file '%s' is not trusted."
, path) : -abs(_e); })
;
3513 else {
3514 arg_link_journal = settings->link_journal;
3515 arg_link_journal_try = settings->link_journal_try;
3516 }
3517 }
3518
3519 if ((arg_settings_mask & SETTING_TIMEZONE) == 0 &&
3520 settings->timezone != _TIMEZONE_MODE_INVALID)
3521 arg_timezone = settings->timezone;
3522
3523 return 0;
3524}
3525
3526static int load_settings(void) {
3527 _cleanup_(settings_freep)__attribute__((cleanup(settings_freep))) Settings *settings = NULL((void*)0);
3528 _cleanup_fclose___attribute__((cleanup(fclosep))) FILE *f = NULL((void*)0);
3529 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0);
3530 const char *fn, *i;
3531 int r;
3532
3533 /* If all settings are masked, there's no point in looking for
3534 * the settings file */
3535 if ((arg_settings_mask & _SETTINGS_MASK_ALL) == _SETTINGS_MASK_ALL)
3536 return 0;
3537
3538 fn = strjoina(arg_machine, ".nspawn")({ const char *_appendees_[] = { arg_machine, ".nspawn" }; char
*_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ <
__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p
(typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
3539
3540 /* We first look in the admin's directories in /etc and /run */
3541 FOREACH_STRING(i, "/etc/systemd/nspawn", "/run/systemd/nspawn")for (char **_l = ({ char **_ll = ((char**) ((const char*[]) {
"/etc/systemd/nspawn", "/run/systemd/nspawn", ((void*)0) }))
; i = _ll ? _ll[0] : ((void*)0); _ll; }); _l && *_l; i
= ({ _l ++; _l[0]; }))
{
3542 _cleanup_free___attribute__((cleanup(freep))) char *j = NULL((void*)0);
3543
3544 j = strjoin(i, "/", fn)strjoin_real((i), "/", fn, ((void*)0));
3545 if (!j)
3546 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
3546, __func__)
;
3547
3548 f = fopen(j, "re");
3549 if (f) {
3550 p = TAKE_PTR(j)({ typeof(j) _ptr_ = (j); (j) = ((void*)0); _ptr_; });
3551
3552 /* By default, we trust configuration from /etc and /run */
3553 if (arg_settings_trusted < 0)
3554 arg_settings_trusted = true1;
3555
3556 break;
3557 }
3558
3559 if (errno(*__errno_location ()) != ENOENT2)
3560 return log_error_errno(errno, "Failed to open %s: %m", j)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3560, __func__
, "Failed to open %s: %m", j) : -abs(_e); })
;
3561 }
3562
3563 if (!f) {
3564 /* After that, let's look for a file next to the
3565 * actual image we shall boot. */
3566
3567 if (arg_image) {
3568 p = file_in_same_dir(arg_image, fn);
3569 if (!p)
3570 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
3570, __func__)
;
3571 } else if (arg_directory) {
3572 p = file_in_same_dir(arg_directory, fn);
3573 if (!p)
3574 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
3574, __func__)
;
3575 }
3576
3577 if (p) {
3578 f = fopen(p, "re");
3579 if (!f && errno(*__errno_location ()) != ENOENT2)
3580 return log_error_errno(errno, "Failed to open %s: %m", p)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3580, __func__
, "Failed to open %s: %m", p) : -abs(_e); })
;
3581
3582 /* By default, we do not trust configuration from /var/lib/machines */
3583 if (arg_settings_trusted < 0)
3584 arg_settings_trusted = false0;
3585 }
3586 }
3587
3588 if (!f)
3589 return 0;
3590
3591 log_debug("Settings are trusted: %s", yes_no(arg_settings_trusted))({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3591, __func__, "Settings are trusted: %s"
, yes_no(arg_settings_trusted)) : -abs(_e); })
;
3592
3593 r = settings_load(f, p, &settings);
3594 if (r < 0)
3595 return r;
3596
3597 return merge_settings(settings, p);
3598}
3599
3600static int run(int master,
3601 const char* console,
3602 DissectedImage *dissected_image,
3603 bool_Bool interactive,
3604 bool_Bool secondary,
3605 FDSet *fds,
3606 char veth_name[IFNAMSIZ16], bool_Bool *veth_created,
3607 union in_addr_union *exposed,
3608 pid_t *pid, int *ret) {
3609
3610 static const struct sigaction sa = {
3611 .sa_handler__sigaction_handler.sa_handler = nop_signal_handler,
3612 .sa_flags = SA_NOCLDSTOP1|SA_RESTART0x10000000,
3613 };
3614
3615 _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile uid_shift_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) };
3616 _cleanup_close___attribute__((cleanup(closep))) int etc_passwd_lock = -1;
3617 _cleanup_close_pair___attribute__((cleanup(close_pairp))) int
3618 kmsg_socket_pair[2] = { -1, -1 },
3619 rtnl_socket_pair[2] = { -1, -1 },
3620 pid_socket_pair[2] = { -1, -1 },
3621 uuid_socket_pair[2] = { -1, -1 },
3622 notify_socket_pair[2] = { -1, -1 },
3623 uid_shift_socket_pair[2] = { -1, -1 },
3624 unified_cgroup_hierarchy_socket_pair[2] = { -1, -1};
3625
3626 _cleanup_close___attribute__((cleanup(closep))) int notify_socket= -1;
3627 _cleanup_(barrier_destroy)__attribute__((cleanup(barrier_destroy))) Barrier barrier = BARRIER_NULL{-1, -1, {-1, -1}, 0};
3628 _cleanup_(sd_event_source_unrefp)__attribute__((cleanup(sd_event_source_unrefp))) sd_event_source *notify_event_source = NULL((void*)0);
3629 _cleanup_(sd_event_unrefp)__attribute__((cleanup(sd_event_unrefp))) sd_event *event = NULL((void*)0);
3630 _cleanup_(pty_forward_freep)__attribute__((cleanup(pty_forward_freep))) PTYForward *forward = NULL((void*)0);
3631 _cleanup_(sd_netlink_unrefp)__attribute__((cleanup(sd_netlink_unrefp))) sd_netlink *rtnl = NULL((void*)0);
3632 _cleanup_(sd_bus_flush_close_unrefp)__attribute__((cleanup(sd_bus_flush_close_unrefp))) sd_bus *bus = NULL((void*)0);
3633 ContainerStatus container_status = 0;
3634 char last_char = 0;
3635 int ifi = 0, r;
3636 ssize_t l;
3637 sigset_t mask_chld;
3638 _cleanup_close___attribute__((cleanup(closep))) int netns_fd = -1;
3639
3640 assert_se(sigemptyset(&mask_chld) == 0)do { if ((__builtin_expect(!!(!(sigemptyset(&mask_chld) ==
0)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("sigemptyset(&mask_chld) == 0"
), "../src/nspawn/nspawn.c", 3640, __PRETTY_FUNCTION__); } while
(0)
;
3641 assert_se(sigaddset(&mask_chld, SIGCHLD) == 0)do { if ((__builtin_expect(!!(!(sigaddset(&mask_chld, 17)
== 0)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("sigaddset(&mask_chld, SIGCHLD) == 0"
), "../src/nspawn/nspawn.c", 3641, __PRETTY_FUNCTION__); } while
(0)
;
3642
3643 if (arg_userns_mode == USER_NAMESPACE_PICK) {
3644 /* When we shall pick the UID/GID range, let's first lock /etc/passwd, so that we can safely
3645 * check with getpwuid() if the specific user already exists. Note that /etc might be
3646 * read-only, in which case this will fail with EROFS. But that's really OK, as in that case we
3647 * can be reasonably sure that no users are going to be added. Note that getpwuid() checks are
3648 * really just an extra safety net. We kinda assume that the UID range we allocate from is
3649 * really ours. */
3650
3651 etc_passwd_lock = take_etc_passwd_lock(NULL((void*)0));
3652 if (etc_passwd_lock < 0 && etc_passwd_lock != -EROFS30)
3653 return log_error_errno(etc_passwd_lock, "Failed to take /etc/passwd lock: %m")({ int _level = ((3)), _e = ((etc_passwd_lock)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3653, __func__, "Failed to take /etc/passwd lock: %m"
) : -abs(_e); })
;
3654 }
3655
3656 r = barrier_create(&barrier);
3657 if (r < 0)
3658 return log_error_errno(r, "Cannot initialize IPC barrier: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3658, __func__, "Cannot initialize IPC barrier: %m"
) : -abs(_e); })
;
3659
3660 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, kmsg_socket_pair) < 0)
3661 return log_error_errno(errno, "Failed to create kmsg socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3661, __func__
, "Failed to create kmsg socket pair: %m") : -abs(_e); })
;
3662
3663 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, rtnl_socket_pair) < 0)
3664 return log_error_errno(errno, "Failed to create rtnl socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3664, __func__
, "Failed to create rtnl socket pair: %m") : -abs(_e); })
;
3665
3666 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, pid_socket_pair) < 0)
3667 return log_error_errno(errno, "Failed to create pid socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3667, __func__
, "Failed to create pid socket pair: %m") : -abs(_e); })
;
3668
3669 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, uuid_socket_pair) < 0)
3670 return log_error_errno(errno, "Failed to create id socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3670, __func__
, "Failed to create id socket pair: %m") : -abs(_e); })
;
3671
3672 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, notify_socket_pair) < 0)
3673 return log_error_errno(errno, "Failed to create notify socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3673, __func__
, "Failed to create notify socket pair: %m") : -abs(_e); })
;
3674
3675 if (arg_userns_mode != USER_NAMESPACE_NO)
3676 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, uid_shift_socket_pair) < 0)
3677 return log_error_errno(errno, "Failed to create uid shift socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3677, __func__
, "Failed to create uid shift socket pair: %m") : -abs(_e); }
)
;
3678
3679 if (arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_UNKNOWN)
3680 if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0, unified_cgroup_hierarchy_socket_pair) < 0)
3681 return log_error_errno(errno, "Failed to create unified cgroup socket pair: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3681, __func__
, "Failed to create unified cgroup socket pair: %m") : -abs(_e
); })
;
3682
3683 /* Child can be killed before execv(), so handle SIGCHLD in order to interrupt
3684 * parent's blocking calls and give it a chance to call wait() and terminate. */
3685 r = sigprocmask(SIG_UNBLOCK1, &mask_chld, NULL((void*)0));
3686 if (r < 0)
3687 return log_error_errno(errno, "Failed to change the signal mask: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3687, __func__
, "Failed to change the signal mask: %m") : -abs(_e); })
;
3688
3689 r = sigaction(SIGCHLD17, &sa, NULL((void*)0));
3690 if (r < 0)
3691 return log_error_errno(errno, "Failed to install SIGCHLD handler: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3691, __func__
, "Failed to install SIGCHLD handler: %m") : -abs(_e); })
;
3692
3693 if (arg_network_namespace_path) {
3694 netns_fd = open(arg_network_namespace_path, O_RDONLY00|O_NOCTTY0400|O_CLOEXEC02000000);
3695 if (netns_fd < 0)
3696 return log_error_errno(errno, "Cannot open file %s: %m", arg_network_namespace_path)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3696, __func__
, "Cannot open file %s: %m", arg_network_namespace_path) : -abs
(_e); })
;
3697
3698 r = fd_is_network_ns(netns_fd);
3699 if (r == -EUCLEAN117)
3700 log_debug_errno(r, "Cannot determine if passed network namespace path '%s' really refers to a network namespace, assuming it does.", arg_network_namespace_path)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3700, __func__, "Cannot determine if passed network namespace path '%s' really refers to a network namespace, assuming it does."
, arg_network_namespace_path) : -abs(_e); })
;
3701 else if (r < 0)
3702 return log_error_errno(r, "Failed to check %s fs type: %m", arg_network_namespace_path)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3702, __func__, "Failed to check %s fs type: %m"
, arg_network_namespace_path) : -abs(_e); })
;
3703 else if (r == 0) {
3704 log_error("Path %s doesn't refer to a network namespace, refusing.", arg_network_namespace_path)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3704, __func__, "Path %s doesn't refer to a network namespace, refusing."
, arg_network_namespace_path) : -abs(_e); })
;
3705 return -EINVAL22;
3706 }
3707 }
3708
3709 *pid = raw_clone(SIGCHLD17|CLONE_NEWNS0x00020000);
3710 if (*pid < 0)
3711 return log_error_errno(errno, "clone() failed%s: %m",({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3713, __func__
, "clone() failed%s: %m", (*__errno_location ()) == 22 ? ", do you have namespace support enabled in your kernel? (You need UTS, IPC, PID and NET namespacing built in)"
: "") : -abs(_e); })
3712 errno == EINVAL ?({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3713, __func__
, "clone() failed%s: %m", (*__errno_location ()) == 22 ? ", do you have namespace support enabled in your kernel? (You need UTS, IPC, PID and NET namespacing built in)"
: "") : -abs(_e); })
3713 ", do you have namespace support enabled in your kernel? (You need UTS, IPC, PID and NET namespacing built in)" : "")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3713, __func__
, "clone() failed%s: %m", (*__errno_location ()) == 22 ? ", do you have namespace support enabled in your kernel? (You need UTS, IPC, PID and NET namespacing built in)"
: "") : -abs(_e); })
;
3714
3715 if (*pid == 0) {
3716 /* The outer child only has a file system namespace. */
3717 barrier_set_role(&barrier, BARRIER_CHILD);
3718
3719 master = safe_close(master);
3720
3721 kmsg_socket_pair[0] = safe_close(kmsg_socket_pair[0]);
3722 rtnl_socket_pair[0] = safe_close(rtnl_socket_pair[0]);
3723 pid_socket_pair[0] = safe_close(pid_socket_pair[0]);
3724 uuid_socket_pair[0] = safe_close(uuid_socket_pair[0]);
3725 notify_socket_pair[0] = safe_close(notify_socket_pair[0]);
3726 uid_shift_socket_pair[0] = safe_close(uid_shift_socket_pair[0]);
3727 unified_cgroup_hierarchy_socket_pair[0] = safe_close(unified_cgroup_hierarchy_socket_pair[0]);
3728
3729 (void) reset_all_signal_handlers();
3730 (void) reset_signal_mask();
3731
3732 r = outer_child(&barrier,
3733 arg_directory,
3734 console,
3735 dissected_image,
3736 interactive,
3737 secondary,
3738 pid_socket_pair[1],
3739 uuid_socket_pair[1],
3740 notify_socket_pair[1],
3741 kmsg_socket_pair[1],
3742 rtnl_socket_pair[1],
3743 uid_shift_socket_pair[1],
3744 unified_cgroup_hierarchy_socket_pair[1],
3745 fds,
3746 netns_fd);
3747 if (r < 0)
3748 _exit(EXIT_FAILURE1);
3749
3750 _exit(EXIT_SUCCESS0);
3751 }
3752
3753 barrier_set_role(&barrier, BARRIER_PARENT);
3754
3755 fds = fdset_free(fds);
3756
3757 kmsg_socket_pair[1] = safe_close(kmsg_socket_pair[1]);
3758 rtnl_socket_pair[1] = safe_close(rtnl_socket_pair[1]);
3759 pid_socket_pair[1] = safe_close(pid_socket_pair[1]);
3760 uuid_socket_pair[1] = safe_close(uuid_socket_pair[1]);
3761 notify_socket_pair[1] = safe_close(notify_socket_pair[1]);
3762 uid_shift_socket_pair[1] = safe_close(uid_shift_socket_pair[1]);
3763 unified_cgroup_hierarchy_socket_pair[1] = safe_close(unified_cgroup_hierarchy_socket_pair[1]);
3764
3765 if (arg_userns_mode != USER_NAMESPACE_NO) {
3766 /* The child just let us know the UID shift it might have read from the image. */
3767 l = recv(uid_shift_socket_pair[0], &arg_uid_shift, sizeof arg_uid_shift, 0);
3768 if (l < 0)
3769 return log_error_errno(errno, "Failed to read UID shift: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3769, __func__
, "Failed to read UID shift: %m") : -abs(_e); })
;
3770 if (l != sizeof arg_uid_shift) {
3771 log_error("Short read while reading UID shift.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3771, __func__, "Short read while reading UID shift."
) : -abs(_e); })
;
3772 return -EIO5;
3773 }
3774
3775 if (arg_userns_mode == USER_NAMESPACE_PICK) {
3776 /* If we are supposed to pick the UID shift, let's try to use the shift read from the
3777 * image, but if that's already in use, pick a new one, and report back to the child,
3778 * which one we now picked. */
3779
3780 r = uid_shift_pick(&arg_uid_shift, &uid_shift_lock);
3781 if (r < 0)
3782 return log_error_errno(r, "Failed to pick suitable UID/GID range: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3782, __func__, "Failed to pick suitable UID/GID range: %m"
) : -abs(_e); })
;
3783
3784 l = send(uid_shift_socket_pair[0], &arg_uid_shift, sizeof arg_uid_shift, MSG_NOSIGNALMSG_NOSIGNAL);
3785 if (l < 0)
3786 return log_error_errno(errno, "Failed to send UID shift: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3786, __func__
, "Failed to send UID shift: %m") : -abs(_e); })
;
3787 if (l != sizeof arg_uid_shift) {
3788 log_error("Short write while writing UID shift.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3788, __func__, "Short write while writing UID shift."
) : -abs(_e); })
;
3789 return -EIO5;
3790 }
3791 }
3792 }
3793
3794 if (arg_unified_cgroup_hierarchy == CGROUP_UNIFIED_UNKNOWN) {
3795 /* The child let us know the support cgroup mode it might have read from the image. */
3796 l = recv(unified_cgroup_hierarchy_socket_pair[0], &arg_unified_cgroup_hierarchy, sizeof(arg_unified_cgroup_hierarchy), 0);
3797 if (l < 0)
3798 return log_error_errno(errno, "Failed to read cgroup mode: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3798, __func__
, "Failed to read cgroup mode: %m") : -abs(_e); })
;
3799 if (l != sizeof(arg_unified_cgroup_hierarchy)) {
3800 log_error("Short read while reading cgroup mode.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3800, __func__, "Short read while reading cgroup mode."
) : -abs(_e); })
;
3801 return -EIO5;
3802 }
3803 }
3804
3805 /* Wait for the outer child. */
3806 r = wait_for_terminate_and_check("(sd-namespace)", *pid, WAIT_LOG_ABNORMAL);
3807 if (r < 0)
3808 return r;
3809 if (r != EXIT_SUCCESS0)
3810 return -EIO5;
3811
3812 /* And now retrieve the PID of the inner child. */
3813 l = recv(pid_socket_pair[0], pid, sizeof *pid, 0);
3814 if (l < 0)
3815 return log_error_errno(errno, "Failed to read inner child PID: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3815, __func__
, "Failed to read inner child PID: %m") : -abs(_e); })
;
3816 if (l != sizeof *pid) {
3817 log_error("Short read while reading inner child PID.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3817, __func__, "Short read while reading inner child PID."
) : -abs(_e); })
;
3818 return -EIO5;
3819 }
3820
3821 /* We also retrieve container UUID in case it was generated by outer child */
3822 l = recv(uuid_socket_pair[0], &arg_uuid, sizeof arg_uuid, 0);
3823 if (l < 0)
3824 return log_error_errno(errno, "Failed to read container machine ID: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 3824, __func__
, "Failed to read container machine ID: %m") : -abs(_e); })
;
3825 if (l != sizeof(arg_uuid)) {
3826 log_error("Short read while reading container machined ID.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3826, __func__, "Short read while reading container machined ID."
) : -abs(_e); })
;
3827 return -EIO5;
3828 }
3829
3830 /* We also retrieve the socket used for notifications generated by outer child */
3831 notify_socket = receive_one_fd(notify_socket_pair[0], 0);
3832 if (notify_socket < 0)
3833 return log_error_errno(notify_socket,({ int _level = ((3)), _e = ((notify_socket)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3834, __func__, "Failed to receive notification socket from the outer child: %m"
) : -abs(_e); })
3834 "Failed to receive notification socket from the outer child: %m")({ int _level = ((3)), _e = ((notify_socket)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3834, __func__, "Failed to receive notification socket from the outer child: %m"
) : -abs(_e); })
;
3835
3836 log_debug("Init process invoked as PID "PID_FMT, *pid)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3836, __func__, "Init process invoked as PID "
"%" "i", *pid) : -abs(_e); })
;
3837
3838 if (arg_userns_mode != USER_NAMESPACE_NO) {
3839 if (!barrier_place_and_sync(&barrier)) { /* #1 */
3840 log_error("Child died too early.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3840, __func__, "Child died too early."
) : -abs(_e); })
;
3841 return -ESRCH3;
3842 }
3843
3844 r = setup_uid_map(*pid);
3845 if (r < 0)
3846 return r;
3847
3848 (void) barrier_place(&barrier); /* #2 */
3849 }
3850
3851 if (arg_private_network) {
3852 if (!arg_network_namespace_path) {
3853 /* Wait until the child has unshared its network namespace. */
3854 if (!barrier_place_and_sync(&barrier)) { /* #3 */
3855 log_error("Child died too early")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3855, __func__, "Child died too early"
) : -abs(_e); })
;
3856 return -ESRCH3;
3857 }
3858 }
3859
3860 r = move_network_interfaces(*pid, arg_network_interfaces);
3861 if (r < 0)
3862 return r;
3863
3864 if (arg_network_veth) {
3865 r = setup_veth(arg_machine, *pid, veth_name,
3866 arg_network_bridge || arg_network_zone);
3867 if (r < 0)
3868 return r;
3869 else if (r > 0)
3870 ifi = r;
3871
3872 if (arg_network_bridge) {
3873 /* Add the interface to a bridge */
3874 r = setup_bridge(veth_name, arg_network_bridge, false0);
3875 if (r < 0)
3876 return r;
3877 if (r > 0)
3878 ifi = r;
3879 } else if (arg_network_zone) {
3880 /* Add the interface to a bridge, possibly creating it */
3881 r = setup_bridge(veth_name, arg_network_zone, true1);
3882 if (r < 0)
3883 return r;
3884 if (r > 0)
3885 ifi = r;
3886 }
3887 }
3888
3889 r = setup_veth_extra(arg_machine, *pid, arg_network_veth_extra);
3890 if (r < 0)
3891 return r;
3892
3893 /* We created the primary and extra veth links now; let's remember this, so that we know to
3894 remove them later on. Note that we don't bother with removing veth links that were created
3895 here when their setup failed half-way, because in that case the kernel should be able to
3896 remove them on its own, since they cannot be referenced by anything yet. */
3897 *veth_created = true1;
3898
3899 r = setup_macvlan(arg_machine, *pid, arg_network_macvlan);
3900 if (r < 0)
3901 return r;
3902
3903 r = setup_ipvlan(arg_machine, *pid, arg_network_ipvlan);
3904 if (r < 0)
3905 return r;
3906 }
3907
3908 if (arg_register || !arg_keep_unit) {
3909 r = sd_bus_default_system(&bus);
3910 if (r < 0)
3911 return log_error_errno(r, "Failed to open system bus: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3911, __func__, "Failed to open system bus: %m"
) : -abs(_e); })
;
3912 }
3913
3914 if (!arg_keep_unit) {
3915 /* When a new scope is created for this container, then we'll be registered as its controller, in which
3916 * case PID 1 will send us a friendly RequestStop signal, when it is asked to terminate the
3917 * scope. Let's hook into that, and cleanly shut down the container, and print a friendly message. */
3918
3919 r = sd_bus_match_signal_async(
3920 bus,
3921 NULL((void*)0),
3922 "org.freedesktop.systemd1",
3923 NULL((void*)0),
3924 "org.freedesktop.systemd1.Scope",
3925 "RequestStop",
3926 on_request_stop, NULL((void*)0), PID_TO_PTR(*pid));
3927 if (r < 0)
3928 return log_error_errno(r, "Failed to request RequestStop match: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3928, __func__, "Failed to request RequestStop match: %m"
) : -abs(_e); })
;
3929 }
3930
3931 if (arg_register) {
3932 r = register_machine(
3933 bus,
3934 arg_machine,
3935 *pid,
3936 arg_directory,
3937 arg_uuid,
3938 ifi,
3939 arg_slice,
3940 arg_custom_mounts, arg_n_custom_mounts,
3941 arg_kill_signal,
3942 arg_property,
3943 arg_keep_unit,
3944 arg_container_service_name);
3945 if (r < 0)
3946 return r;
3947
3948 } else if (!arg_keep_unit) {
3949 r = allocate_scope(
3950 bus,
3951 arg_machine,
3952 *pid,
3953 arg_slice,
3954 arg_custom_mounts, arg_n_custom_mounts,
3955 arg_kill_signal,
3956 arg_property);
3957 if (r < 0)
3958 return r;
3959
3960 } else if (arg_slice || arg_property)
3961 log_notice("Machine and scope registration turned off, --slice= and --property= settings will have no effect.")({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3961, __func__, "Machine and scope registration turned off, --slice= and --property= settings will have no effect."
) : -abs(_e); })
;
3962
3963 r = create_subcgroup(*pid, arg_keep_unit, arg_unified_cgroup_hierarchy);
3964 if (r < 0)
3965 return r;
3966
3967 r = sync_cgroup(*pid, arg_unified_cgroup_hierarchy, arg_uid_shift);
3968 if (r < 0)
3969 return r;
3970
3971 r = chown_cgroup(*pid, arg_unified_cgroup_hierarchy, arg_uid_shift);
3972 if (r < 0)
3973 return r;
3974
3975 /* Notify the child that the parent is ready with all
3976 * its setup (including cgroup-ification), and that
3977 * the child can now hand over control to the code to
3978 * run inside the container. */
3979 (void) barrier_place(&barrier); /* #4 */
3980
3981 /* Block SIGCHLD here, before notifying child.
3982 * process_pty() will handle it with the other signals. */
3983 assert_se(sigprocmask(SIG_BLOCK, &mask_chld, NULL) >= 0)do { if ((__builtin_expect(!!(!(sigprocmask(0, &mask_chld
, ((void*)0)) >= 0)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("sigprocmask(SIG_BLOCK, &mask_chld, NULL) >= 0"), "../src/nspawn/nspawn.c"
, 3983, __PRETTY_FUNCTION__); } while (0)
;
3984
3985 /* Reset signal to default */
3986 r = default_signals(SIGCHLD17, -1);
3987 if (r < 0)
3988 return log_error_errno(r, "Failed to reset SIGCHLD: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3988, __func__, "Failed to reset SIGCHLD: %m"
) : -abs(_e); })
;
3989
3990 r = sd_event_new(&event);
3991 if (r < 0)
3992 return log_error_errno(r, "Failed to get default event source: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3992, __func__, "Failed to get default event source: %m"
) : -abs(_e); })
;
3993
3994 (void) sd_event_set_watchdog(event, true1);
3995
3996 if (bus) {
3997 r = sd_bus_attach_event(bus, event, 0);
3998 if (r < 0)
3999 return log_error_errno(r, "Failed to attach bus to event loop: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 3999, __func__, "Failed to attach bus to event loop: %m"
) : -abs(_e); })
;
4000 }
4001
4002 r = setup_sd_notify_parent(event, notify_socket, PID_TO_PTR(*pid), &notify_event_source);
4003 if (r < 0)
4004 return r;
4005
4006 /* Let the child know that we are ready and wait that the child is completely ready now. */
4007 if (!barrier_place_and_sync(&barrier)) { /* #5 */
4008 log_error("Child died too early.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4008, __func__, "Child died too early."
) : -abs(_e); })
;
4009 return -ESRCH3;
4010 }
4011
4012 /* At this point we have made use of the UID we picked, and thus nss-mymachines
4013 * will make them appear in getpwuid(), thus we can release the /etc/passwd lock. */
4014 etc_passwd_lock = safe_close(etc_passwd_lock);
4015
4016 sd_notifyf(false0,
4017 "STATUS=Container running.\n"
4018 "X_NSPAWN_LEADER_PID=" PID_FMT"%" "i", *pid);
4019 if (!arg_notify_ready)
4020 (void) sd_notify(false0, "READY=1\n");
4021
4022 if (arg_kill_signal > 0) {
4023 /* Try to kill the init system on SIGINT or SIGTERM */
4024 (void) sd_event_add_signal(event, NULL((void*)0), SIGINT2, on_orderly_shutdown, PID_TO_PTR(*pid));
4025 (void) sd_event_add_signal(event, NULL((void*)0), SIGTERM15, on_orderly_shutdown, PID_TO_PTR(*pid));
4026 } else {
4027 /* Immediately exit */
4028 (void) sd_event_add_signal(event, NULL((void*)0), SIGINT2, NULL((void*)0), NULL((void*)0));
4029 (void) sd_event_add_signal(event, NULL((void*)0), SIGTERM15, NULL((void*)0), NULL((void*)0));
4030 }
4031
4032 /* Exit when the child exits */
4033 (void) sd_event_add_signal(event, NULL((void*)0), SIGCHLD17, on_sigchld, PID_TO_PTR(*pid));
4034
4035 if (arg_expose_ports) {
4036 r = expose_port_watch_rtnl(event, rtnl_socket_pair[0], on_address_change, exposed, &rtnl);
4037 if (r < 0)
4038 return r;
4039
4040 (void) expose_port_execute(rtnl, arg_expose_ports, exposed);
4041 }
4042
4043 rtnl_socket_pair[0] = safe_close(rtnl_socket_pair[0]);
4044
4045 r = pty_forward_new(event, master,
4046 PTY_FORWARD_IGNORE_VHANGUP | (interactive ? 0 : PTY_FORWARD_READ_ONLY),
4047 &forward);
4048 if (r < 0)
4049 return log_error_errno(r, "Failed to create PTY forwarder: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4049, __func__, "Failed to create PTY forwarder: %m"
) : -abs(_e); })
;
4050
4051 r = sd_event_loop(event);
4052 if (r < 0)
4053 return log_error_errno(r, "Failed to run event loop: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4053, __func__, "Failed to run event loop: %m"
) : -abs(_e); })
;
4054
4055 pty_forward_get_last_char(forward, &last_char);
4056
4057 forward = pty_forward_free(forward);
4058
4059 if (!arg_quiet && last_char != '\n')
4060 putc('\n', stdoutstdout);
4061
4062 /* Kill if it is not dead yet anyway */
4063 if (bus) {
4064 if (arg_register)
4065 terminate_machine(bus, arg_machine);
4066 else if (!arg_keep_unit)
4067 terminate_scope(bus, arg_machine);
4068 }
4069
4070 /* Normally redundant, but better safe than sorry */
4071 (void) kill(*pid, SIGKILL9);
4072
4073 r = wait_for_container(*pid, &container_status);
4074 *pid = 0;
4075
4076 if (r < 0)
4077 /* We failed to wait for the container, or the container exited abnormally. */
4078 return r;
4079 if (r > 0 || container_status == CONTAINER_TERMINATED) {
4080 /* r > 0 → The container exited with a non-zero status.
4081 * As a special case, we need to replace 133 with a different value,
4082 * because 133 is special-cased in the service file to reboot the container.
4083 * otherwise → The container exited with zero status and a reboot was not requested.
4084 */
4085 if (r == EXIT_FORCE_RESTART133)
4086 r = EXIT_FAILURE1; /* replace 133 with the general failure code */
4087 *ret = r;
4088 return 0; /* finito */
4089 }
4090
4091 /* CONTAINER_REBOOTED, loop again */
4092
4093 if (arg_keep_unit) {
4094 /* Special handling if we are running as a service: instead of simply
4095 * restarting the machine we want to restart the entire service, so let's
4096 * inform systemd about this with the special exit code 133. The service
4097 * file uses RestartForceExitStatus=133 so that this results in a full
4098 * nspawn restart. This is necessary since we might have cgroup parameters
4099 * set we want to have flushed out. */
4100 *ret = EXIT_FORCE_RESTART133;
4101 return 0; /* finito */
4102 }
4103
4104 expose_port_flush(arg_expose_ports, exposed);
4105
4106 (void) remove_veth_links(veth_name, arg_network_veth_extra);
4107 *veth_created = false0;
4108 return 1; /* loop again */
4109}
4110
4111static int initialize_rlimits(void) {
4112 /* The default resource limits the kernel passes to PID 1, as per kernel 4.16. Let's pass our container payload
4113 * the same values as the kernel originally passed to PID 1, in order to minimize differences between host and
4114 * container execution environments. */
4115
4116 static const struct rlimit kernel_defaults[_RLIMIT_MAX(__RLIMIT_RTTIME+1 > __RLIMIT_NLIMITS ? __RLIMIT_RTTIME+1 :
__RLIMIT_NLIMITS)
] = {
4117 [RLIMIT_ASRLIMIT_AS] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4118 [RLIMIT_CORERLIMIT_CORE] = { 0, RLIM_INFINITY0xffffffffffffffffuLL },
4119 [RLIMIT_CPURLIMIT_CPU] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4120 [RLIMIT_DATARLIMIT_DATA] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4121 [RLIMIT_FSIZERLIMIT_FSIZE] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4122 [RLIMIT_LOCKS__RLIMIT_LOCKS] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4123 [RLIMIT_MEMLOCK__RLIMIT_MEMLOCK] = { 65536, 65536 },
4124 [RLIMIT_MSGQUEUE__RLIMIT_MSGQUEUE] = { 819200, 819200 },
4125 [RLIMIT_NICE__RLIMIT_NICE] = { 0, 0 },
4126 [RLIMIT_NOFILERLIMIT_NOFILE] = { 1024, 4096 },
4127 [RLIMIT_RSS__RLIMIT_RSS] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4128 [RLIMIT_RTPRIO__RLIMIT_RTPRIO] = { 0, 0 },
4129 [RLIMIT_RTTIME__RLIMIT_RTTIME] = { RLIM_INFINITY0xffffffffffffffffuLL, RLIM_INFINITY0xffffffffffffffffuLL },
4130 [RLIMIT_STACKRLIMIT_STACK] = { 8388608, RLIM_INFINITY0xffffffffffffffffuLL },
4131
4132 /* The kernel scales the default for RLIMIT_NPROC and RLIMIT_SIGPENDING based on the system's amount of
4133 * RAM. To provide best compatibility we'll read these limits off PID 1 instead of hardcoding them
4134 * here. This is safe as we know that PID 1 doesn't change these two limits and thus the original
4135 * kernel's initialization should still be valid during runtime — at least if PID 1 is systemd. Note
4136 * that PID 1 changes a number of other resource limits during early initialization which is why we
4137 * don't read the other limits from PID 1 but prefer the static table above. */
4138 };
4139
4140 int rl;
4141
4142 for (rl = 0; rl < _RLIMIT_MAX(__RLIMIT_RTTIME+1 > __RLIMIT_NLIMITS ? __RLIMIT_RTTIME+1 :
__RLIMIT_NLIMITS)
; rl++) {
4143 /* Let's only fill in what the user hasn't explicitly configured anyway */
4144 if ((arg_settings_mask & (SETTING_RLIMIT_FIRST((uint64_t) SETTING_RLIMIT_FIRST) << rl)) == 0) {
4145 const struct rlimit *v;
4146 struct rlimit buffer;
4147
4148 if (IN_SET(rl, RLIMIT_NPROC, RLIMIT_SIGPENDING)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){__RLIMIT_NPROC, __RLIMIT_SIGPENDING})/sizeof
(int)]; switch(rl) { case __RLIMIT_NPROC: case __RLIMIT_SIGPENDING
: _found = 1; break; default: break; } _found; })
) {
4149 /* For these two let's read the limits off PID 1. See above for an explanation. */
4150
4151 if (prlimit(1, rl, NULL((void*)0), &buffer) < 0)
4152 return log_error_errno(errno, "Failed to read resource limit RLIMIT_%s of PID 1: %m", rlimit_to_string(rl))({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4152, __func__
, "Failed to read resource limit RLIMIT_%s of PID 1: %m", rlimit_to_string
(rl)) : -abs(_e); })
;
4153
4154 v = &buffer;
4155 } else
4156 v = kernel_defaults + rl;
4157
4158 arg_rlimit[rl] = newdup(struct rlimit, v, 1)((struct rlimit*) memdup_multiply(v, sizeof(struct rlimit), (
1)))
;
4159 if (!arg_rlimit[rl])
4160 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
4160, __func__)
;
4161 }
4162
4163 if (DEBUG_LOGGING(__builtin_expect(!!(log_get_max_level_realm(LOG_REALM_SYSTEMD
) >= 7),0))
) {
4164 _cleanup_free___attribute__((cleanup(freep))) char *k = NULL((void*)0);
4165
4166 (void) rlimit_format(arg_rlimit[rl], &k);
4167 log_debug("Setting RLIMIT_%s to %s.", rlimit_to_string(rl), k)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4167, __func__, "Setting RLIMIT_%s to %s."
, rlimit_to_string(rl), k) : -abs(_e); })
;
4168 }
4169 }
4170
4171 return 0;
4172}
4173
4174int main(int argc, char *argv[]) {
4175 _cleanup_free___attribute__((cleanup(freep))) char *console = NULL((void*)0);
4176 _cleanup_close___attribute__((cleanup(closep))) int master = -1;
4177 _cleanup_fdset_free___attribute__((cleanup(fdset_freep))) FDSet *fds = NULL((void*)0);
4178 int r, n_fd_passed, ret = EXIT_SUCCESS0;
4179 char veth_name[IFNAMSIZ16] = "";
4180 bool_Bool secondary = false0, remove_directory = false0, remove_image = false0;
4181 pid_t pid = 0;
4182 union in_addr_union exposed = {};
4183 _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile tree_global_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }, tree_local_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) };
4184 bool_Bool interactive, veth_created = false0, remove_tmprootdir = false0;
4185 char tmprootdir[] = "/tmp/nspawn-root-XXXXXX";
4186 _cleanup_(loop_device_unrefp)__attribute__((cleanup(loop_device_unrefp))) LoopDevice *loop = NULL((void*)0);
4187 _cleanup_(decrypted_image_unrefp)__attribute__((cleanup(decrypted_image_unrefp))) DecryptedImage *decrypted_image = NULL((void*)0);
4188 _cleanup_(dissected_image_unrefp)__attribute__((cleanup(dissected_image_unrefp))) DissectedImage *dissected_image = NULL((void*)0);
4189
4190 log_parse_environment()log_parse_environment_realm(LOG_REALM_SYSTEMD);
4191 log_open();
4192
4193 /* Make sure rename_process() in the stub init process can work */
4194 saved_argv = argv;
4195 saved_argc = argc;
4196
4197 r = parse_argv(argc, argv);
4198 if (r <= 0)
4199 goto finish;
4200
4201 r = must_be_root();
4202 if (r < 0)
4203 goto finish;
4204
4205 r = initialize_rlimits();
4206 if (r < 0)
4207 goto finish;
4208
4209 r = determine_names();
4210 if (r < 0)
4211 goto finish;
4212
4213 r = load_settings();
4214 if (r < 0)
4215 goto finish;
4216
4217 r = verify_arguments();
4218 if (r < 0)
4219 goto finish;
4220
4221 r = detect_unified_cgroup_hierarchy_from_environment();
4222 if (r < 0)
4223 goto finish;
4224
4225 n_fd_passed = sd_listen_fds(false0);
4226 if (n_fd_passed > 0) {
4227 r = fdset_new_listen_fds(&fds, false0);
4228 if (r < 0) {
4229 log_error_errno(r, "Failed to collect file descriptors: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4229, __func__, "Failed to collect file descriptors: %m"
) : -abs(_e); })
;
4230 goto finish;
4231 }
4232 }
4233
4234 /* The "default" umask. This is appropriate for most file and directory
4235 * operations performed by nspawn, and is the umask that will be used for
4236 * the child. Functions like copy_devnodes() change the umask temporarily. */
4237 umask(0022);
4238
4239 if (arg_directory) {
4240 assert(!arg_image)do { if ((__builtin_expect(!!(!(!arg_image)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("!arg_image"), "../src/nspawn/nspawn.c",
4240, __PRETTY_FUNCTION__); } while (0)
;
4241
4242 if (path_equal(arg_directory, "/") && !arg_ephemeral) {
4243 log_error("Spawning container on root directory is not supported. Consider using --ephemeral.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4243, __func__, "Spawning container on root directory is not supported. Consider using --ephemeral."
) : -abs(_e); })
;
4244 r = -EINVAL22;
4245 goto finish;
4246 }
4247
4248 if (arg_ephemeral) {
4249 _cleanup_free___attribute__((cleanup(freep))) char *np = NULL((void*)0);
4250
4251 r = chase_symlinks_and_update(&arg_directory, 0);
4252 if (r < 0)
4253 goto finish;
4254
4255 /* If the specified path is a mount point we
4256 * generate the new snapshot immediately
4257 * inside it under a random name. However if
4258 * the specified is not a mount point we
4259 * create the new snapshot in the parent
4260 * directory, just next to it. */
4261 r = path_is_mount_point(arg_directory, NULL((void*)0), 0);
4262 if (r < 0) {
4263 log_error_errno(r, "Failed to determine whether directory %s is mount point: %m", arg_directory)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4263, __func__, "Failed to determine whether directory %s is mount point: %m"
, arg_directory) : -abs(_e); })
;
4264 goto finish;
4265 }
4266 if (r > 0)
4267 r = tempfn_random_child(arg_directory, "machine.", &np);
4268 else
4269 r = tempfn_random(arg_directory, "machine.", &np);
4270 if (r < 0) {
4271 log_error_errno(r, "Failed to generate name for directory snapshot: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4271, __func__, "Failed to generate name for directory snapshot: %m"
) : -abs(_e); })
;
4272 goto finish;
4273 }
4274
4275 r = image_path_lock(np, (arg_read_only ? LOCK_SH1 : LOCK_EX2) | LOCK_NB4, &tree_global_lock, &tree_local_lock);
4276 if (r < 0) {
4277 log_error_errno(r, "Failed to lock %s: %m", np)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4277, __func__, "Failed to lock %s: %m"
, np) : -abs(_e); })
;
4278 goto finish;
4279 }
4280
4281 r = btrfs_subvol_snapshot(arg_directory, np,
4282 (arg_read_only ? BTRFS_SNAPSHOT_READ_ONLY : 0) |
4283 BTRFS_SNAPSHOT_FALLBACK_COPY |
4284 BTRFS_SNAPSHOT_FALLBACK_DIRECTORY |
4285 BTRFS_SNAPSHOT_RECURSIVE |
4286 BTRFS_SNAPSHOT_QUOTA);
4287 if (r < 0) {
4288 log_error_errno(r, "Failed to create snapshot %s from %s: %m", np, arg_directory)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4288, __func__, "Failed to create snapshot %s from %s: %m"
, np, arg_directory) : -abs(_e); })
;
4289 goto finish;
4290 }
4291
4292 free_and_replace(arg_directory, np)({ free(arg_directory); (arg_directory) = (np); (np) = ((void
*)0); 0; })
;
4293
4294 remove_directory = true1;
4295
4296 } else {
4297 r = chase_symlinks_and_update(&arg_directory, arg_template ? CHASE_NONEXISTENT : 0);
4298 if (r < 0)
4299 goto finish;
4300
4301 r = image_path_lock(arg_directory, (arg_read_only ? LOCK_SH1 : LOCK_EX2) | LOCK_NB4, &tree_global_lock, &tree_local_lock);
4302 if (r == -EBUSY16) {
4303 log_error_errno(r, "Directory tree %s is currently busy.", arg_directory)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4303, __func__, "Directory tree %s is currently busy."
, arg_directory) : -abs(_e); })
;
4304 goto finish;
4305 }
4306 if (r < 0) {
4307 log_error_errno(r, "Failed to lock %s: %m", arg_directory)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4307, __func__, "Failed to lock %s: %m"
, arg_directory) : -abs(_e); })
;
4308 goto finish;
4309 }
4310
4311 if (arg_template) {
4312 r = chase_symlinks_and_update(&arg_template, 0);
4313 if (r < 0)
4314 goto finish;
4315
4316 r = btrfs_subvol_snapshot(arg_template, arg_directory,
4317 (arg_read_only ? BTRFS_SNAPSHOT_READ_ONLY : 0) |
4318 BTRFS_SNAPSHOT_FALLBACK_COPY |
4319 BTRFS_SNAPSHOT_FALLBACK_DIRECTORY |
4320 BTRFS_SNAPSHOT_FALLBACK_IMMUTABLE |
4321 BTRFS_SNAPSHOT_RECURSIVE |
4322 BTRFS_SNAPSHOT_QUOTA);
4323 if (r == -EEXIST17) {
4324 if (!arg_quiet)
4325 log_info("Directory %s already exists, not populating from template %s.", arg_directory, arg_template)({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4325, __func__, "Directory %s already exists, not populating from template %s."
, arg_directory, arg_template) : -abs(_e); })
;
4326 } else if (r < 0) {
4327 log_error_errno(r, "Couldn't create snapshot %s from %s: %m", arg_directory, arg_template)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4327, __func__, "Couldn't create snapshot %s from %s: %m"
, arg_directory, arg_template) : -abs(_e); })
;
4328 goto finish;
4329 } else {
4330 if (!arg_quiet)
4331 log_info("Populated %s from template %s.", arg_directory, arg_template)({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4331, __func__, "Populated %s from template %s."
, arg_directory, arg_template) : -abs(_e); })
;
4332 }
4333 }
4334 }
4335
4336 if (arg_start_mode == START_BOOT) {
4337 const char *p;
4338
4339 if (arg_pivot_root_new)
4340 p = prefix_roota(arg_directory, arg_pivot_root_new)({ const char* _path = (arg_pivot_root_new), *_root = (arg_directory
), *_ret; char *_p, *_n; size_t _l; while (_path[0] == '/' &&
_path[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path
; else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
4341 else
4342 p = arg_directory;
4343
4344 if (path_is_os_tree(p) <= 0) {
4345 log_error("Directory %s doesn't look like an OS root directory (os-release file is missing). Refusing.", p)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4345, __func__, "Directory %s doesn't look like an OS root directory (os-release file is missing). Refusing."
, p) : -abs(_e); })
;
4346 r = -EINVAL22;
4347 goto finish;
4348 }
4349 } else {
4350 const char *p, *q;
4351
4352 if (arg_pivot_root_new)
4353 p = prefix_roota(arg_directory, arg_pivot_root_new)({ const char* _path = (arg_pivot_root_new), *_root = (arg_directory
), *_ret; char *_p, *_n; size_t _l; while (_path[0] == '/' &&
_path[1] == '/') _path ++; if (empty_or_root(_root)) _ret = _path
; else { _l = strlen(_root) + 1 + strlen(_path) + 1; _n = __builtin_alloca
(_l); _p = stpcpy(_n, _root); while (_p > _n && _p
[-1] == '/') _p--; if (_path[0] != '/') *(_p++) = '/'; strcpy
(_p, _path); _ret = _n; } _ret; })
;
4354 else
4355 p = arg_directory;
4356
4357 q = strjoina(p, "/usr/")({ const char *_appendees_[] = { p, "/usr/" }; char *_d_, *_p_
; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__
(__builtin_choose_expr( !__builtin_types_compatible_p(typeof
(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_
)/sizeof((_appendees_)[0]), ((void)0))) && _appendees_
[_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca
(_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
4358
4359 if (laccess(q, F_OK)faccessat(-100, (q), (0), 0x100) < 0) {
4360 log_error("Directory %s doesn't look like it has an OS tree. Refusing.", p)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4360, __func__, "Directory %s doesn't look like it has an OS tree. Refusing."
, p) : -abs(_e); })
;
4361 r = -EINVAL22;
4362 goto finish;
4363 }
4364 }
4365
4366 } else {
4367 assert(arg_image)do { if ((__builtin_expect(!!(!(arg_image)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("arg_image"), "../src/nspawn/nspawn.c", 4367
, __PRETTY_FUNCTION__); } while (0)
;
4368 assert(!arg_template)do { if ((__builtin_expect(!!(!(!arg_template)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("!arg_template"), "../src/nspawn/nspawn.c"
, 4368, __PRETTY_FUNCTION__); } while (0)
;
4369
4370 r = chase_symlinks_and_update(&arg_image, 0);
4371 if (r < 0)
4372 goto finish;
4373
4374 if (arg_ephemeral) {
4375 _cleanup_free___attribute__((cleanup(freep))) char *np = NULL((void*)0);
4376
4377 r = tempfn_random(arg_image, "machine.", &np);
4378 if (r < 0) {
4379 log_error_errno(r, "Failed to generate name for image snapshot: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4379, __func__, "Failed to generate name for image snapshot: %m"
) : -abs(_e); })
;
4380 goto finish;
4381 }
4382
4383 r = image_path_lock(np, (arg_read_only ? LOCK_SH1 : LOCK_EX2) | LOCK_NB4, &tree_global_lock, &tree_local_lock);
4384 if (r < 0) {
4385 r = log_error_errno(r, "Failed to create image lock: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4385, __func__, "Failed to create image lock: %m"
) : -abs(_e); })
;
4386 goto finish;
4387 }
4388
4389 r = copy_file(arg_image, np, O_EXCL0200, arg_read_only ? 0400 : 0600, FS_NOCOW_FL0x00800000, COPY_REFLINK);
4390 if (r < 0) {
4391 r = log_error_errno(r, "Failed to copy image file: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4391, __func__, "Failed to copy image file: %m"
) : -abs(_e); })
;
4392 goto finish;
4393 }
4394
4395 free_and_replace(arg_image, np)({ free(arg_image); (arg_image) = (np); (np) = ((void*)0); 0;
})
;
4396
4397 remove_image = true1;
4398 } else {
4399 r = image_path_lock(arg_image, (arg_read_only ? LOCK_SH1 : LOCK_EX2) | LOCK_NB4, &tree_global_lock, &tree_local_lock);
4400 if (r == -EBUSY16) {
4401 r = log_error_errno(r, "Disk image %s is currently busy.", arg_image)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4401, __func__, "Disk image %s is currently busy."
, arg_image) : -abs(_e); })
;
4402 goto finish;
4403 }
4404 if (r < 0) {
4405 r = log_error_errno(r, "Failed to create image lock: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4405, __func__, "Failed to create image lock: %m"
) : -abs(_e); })
;
4406 goto finish;
4407 }
4408
4409 if (!arg_root_hash) {
4410 r = root_hash_load(arg_image, &arg_root_hash, &arg_root_hash_size);
4411 if (r < 0) {
4412 log_error_errno(r, "Failed to load root hash file for %s: %m", arg_image)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4412, __func__, "Failed to load root hash file for %s: %m"
, arg_image) : -abs(_e); })
;
4413 goto finish;
4414 }
4415 }
4416 }
4417
4418 if (!mkdtemp(tmprootdir)) {
4419 r = log_error_errno(errno, "Failed to create temporary directory: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4419, __func__
, "Failed to create temporary directory: %m") : -abs(_e); })
;
4420 goto finish;
4421 }
4422
4423 remove_tmprootdir = true1;
4424
4425 arg_directory = strdup(tmprootdir);
4426 if (!arg_directory) {
4427 r = log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/nspawn/nspawn.c",
4427, __func__)
;
4428 goto finish;
4429 }
4430
4431 r = loop_device_make_by_path(arg_image, arg_read_only ? O_RDONLY00 : O_RDWR02, &loop);
4432 if (r < 0) {
4433 log_error_errno(r, "Failed to set up loopback block device: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4433, __func__, "Failed to set up loopback block device: %m"
) : -abs(_e); })
;
4434 goto finish;
4435 }
4436
4437 r = dissect_image_and_warn(
4438 loop->fd,
4439 arg_image,
4440 arg_root_hash, arg_root_hash_size,
4441 DISSECT_IMAGE_REQUIRE_ROOT,
4442 &dissected_image);
4443 if (r == -ENOPKG65) {
4444 /* dissected_image_and_warn() already printed a brief error message. Extend on that with more details */
4445 log_notice("Note that the disk image needs to\n"({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4450, __func__, "Note that the disk image needs to\n"
" a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"
" b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"
" c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"
" d) or contain a file system without a partition table\n"
"in order to be bootable with systemd-nspawn.") : -abs(_e); }
)
4446 " a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4450, __func__, "Note that the disk image needs to\n"
" a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"
" b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"
" c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"
" d) or contain a file system without a partition table\n"
"in order to be bootable with systemd-nspawn.") : -abs(_e); }
)
4447 " b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4450, __func__, "Note that the disk image needs to\n"
" a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"
" b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"
" c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"
" d) or contain a file system without a partition table\n"
"in order to be bootable with systemd-nspawn.") : -abs(_e); }
)
4448 " c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4450, __func__, "Note that the disk image needs to\n"
" a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"
" b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"
" c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"
" d) or contain a file system without a partition table\n"
"in order to be bootable with systemd-nspawn.") : -abs(_e); }
)
4449 " d) or contain a file system without a partition table\n"({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4450, __func__, "Note that the disk image needs to\n"
" a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"
" b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"
" c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"
" d) or contain a file system without a partition table\n"
"in order to be bootable with systemd-nspawn.") : -abs(_e); }
)
4450 "in order to be bootable with systemd-nspawn.")({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4450, __func__, "Note that the disk image needs to\n"
" a) either contain only a single MBR partition of type 0x83 that is marked bootable\n"
" b) or contain a single GPT partition of type 0FC63DAF-8483-4772-8E79-3D69D8477DE4\n"
" c) or follow http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/\n"
" d) or contain a file system without a partition table\n"
"in order to be bootable with systemd-nspawn.") : -abs(_e); }
)
;
4451 goto finish;
4452 }
4453 if (r < 0)
4454 goto finish;
4455
4456 if (!arg_root_hash && dissected_image->can_verity)
4457 log_notice("Note: image %s contains verity information, but no root hash specified! Proceeding without integrity checking.", arg_image)({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4457, __func__, "Note: image %s contains verity information, but no root hash specified! Proceeding without integrity checking."
, arg_image) : -abs(_e); })
;
4458
4459 r = dissected_image_decrypt_interactively(dissected_image, NULL((void*)0), arg_root_hash, arg_root_hash_size, 0, &decrypted_image);
4460 if (r < 0)
4461 goto finish;
4462
4463 /* Now that we mounted the image, let's try to remove it again, if it is ephemeral */
4464 if (remove_image && unlink(arg_image) >= 0)
4465 remove_image = false0;
4466 }
4467
4468 r = custom_mount_prepare_all(arg_directory, arg_custom_mounts, arg_n_custom_mounts);
4469 if (r < 0)
4470 goto finish;
4471
4472 interactive =
4473 isatty(STDIN_FILENO0) > 0 &&
4474 isatty(STDOUT_FILENO1) > 0;
4475
4476 master = posix_openpt(O_RDWR02|O_NOCTTY0400|O_CLOEXEC02000000|O_NONBLOCK04000);
4477 if (master < 0) {
4478 r = log_error_errno(errno, "Failed to acquire pseudo tty: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4478, __func__
, "Failed to acquire pseudo tty: %m") : -abs(_e); })
;
4479 goto finish;
4480 }
4481
4482 r = ptsname_malloc(master, &console);
4483 if (r < 0) {
4484 r = log_error_errno(r, "Failed to determine tty name: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4484, __func__, "Failed to determine tty name: %m"
) : -abs(_e); })
;
4485 goto finish;
4486 }
4487
4488 if (arg_selinux_apifs_context) {
4489 r = mac_selinux_apply(console, arg_selinux_apifs_context);
4490 if (r < 0)
4491 goto finish;
4492 }
4493
4494 if (unlockpt(master) < 0) {
4495 r = log_error_errno(errno, "Failed to unlock tty: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4495, __func__
, "Failed to unlock tty: %m") : -abs(_e); })
;
4496 goto finish;
4497 }
4498
4499 if (!arg_quiet)
4500 log_info("Spawning container %s on %s.\nPress ^] three times within 1s to kill container.",({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4501, __func__, "Spawning container %s on %s.\nPress ^] three times within 1s to kill container."
, arg_machine, arg_image ?: arg_directory) : -abs(_e); })
4501 arg_machine, arg_image ?: arg_directory)({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4501, __func__, "Spawning container %s on %s.\nPress ^] three times within 1s to kill container."
, arg_machine, arg_image ?: arg_directory) : -abs(_e); })
;
4502
4503 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGWINCH, SIGTERM, SIGINT, -1) >= 0)do { if ((__builtin_expect(!!(!(sigprocmask_many(0, ((void*)0
), 17, 28, 15, 2, -1) >= 0)),0))) log_assert_failed_realm(
LOG_REALM_SYSTEMD, ("sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGWINCH, SIGTERM, SIGINT, -1) >= 0"
), "../src/nspawn/nspawn.c", 4503, __PRETTY_FUNCTION__); } while
(0)
;
4504
4505 if (prctl(PR_SET_CHILD_SUBREAPER36, 1, 0, 0, 0) < 0) {
4506 r = log_error_errno(errno, "Failed to become subreaper: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4506, __func__
, "Failed to become subreaper: %m") : -abs(_e); })
;
4507 goto finish;
4508 }
4509
4510 for (;;) {
4511 r = run(master,
4512 console,
4513 dissected_image,
4514 interactive, secondary,
4515 fds,
4516 veth_name, &veth_created,
4517 &exposed,
4518 &pid, &ret);
4519 if (r <= 0)
4520 break;
4521 }
4522
4523finish:
4524 sd_notify(false0,
4525 r == 0 && ret == EXIT_FORCE_RESTART133 ? "STOPPING=1\nSTATUS=Restarting..." :
4526 "STOPPING=1\nSTATUS=Terminating...");
4527
4528 if (pid > 0)
4529 (void) kill(pid, SIGKILL9);
4530
4531 /* Try to flush whatever is still queued in the pty */
4532 if (master >= 0) {
4533 (void) copy_bytes(master, STDOUT_FILENO1, (uint64_t) -1, 0);
4534 master = safe_close(master);
4535 }
4536
4537 if (pid > 0)
4538 (void) wait_for_terminate(pid, NULL((void*)0));
4539
4540 pager_close();
4541
4542 if (remove_directory && arg_directory) {
4543 int k;
4544
4545 k = rm_rf(arg_directory, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME);
4546 if (k < 0)
4547 log_warning_errno(k, "Cannot remove '%s', ignoring: %m", arg_directory)({ int _level = ((4)), _e = ((k)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/nspawn/nspawn.c", 4547, __func__, "Cannot remove '%s', ignoring: %m"
, arg_directory) : -abs(_e); })
;
4548 }
4549
4550 if (remove_image && arg_image) {
4551 if (unlink(arg_image) < 0)
4552 log_warning_errno(errno, "Can't remove image file '%s', ignoring: %m", arg_image)({ int _level = ((4)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4552, __func__
, "Can't remove image file '%s', ignoring: %m", arg_image) : -
abs(_e); })
;
4553 }
4554
4555 if (remove_tmprootdir) {
4556 if (rmdir(tmprootdir) < 0)
4557 log_debug_errno(errno, "Can't remove temporary root directory '%s', ignoring: %m", tmprootdir)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >=
((_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/nspawn/nspawn.c", 4557, __func__
, "Can't remove temporary root directory '%s', ignoring: %m",
tmprootdir) : -abs(_e); })
;
4558 }
4559
4560 if (arg_machine) {
4561 const char *p;
4562
4563 p = strjoina("/run/systemd/nspawn/propagate/", arg_machine)({ const char *_appendees_[] = { "/run/systemd/nspawn/propagate/"
, arg_machine }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_
; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr
( !__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _len_ += strlen
(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1);
for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr(
!__builtin_types_compatible_p(typeof(_appendees_), typeof(&
*(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0]
), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy
(_p_, _appendees_[_i_]); *_p_ = 0; _d_; })
;
4564 (void) rm_rf(p, REMOVE_ROOT);
4565 }
4566
4567 expose_port_flush(arg_expose_ports, &exposed);
4568
4569 if (veth_created)
4570 (void) remove_veth_links(veth_name, arg_network_veth_extra);
4571 (void) remove_bridge(arg_network_zone);
4572
4573 free(arg_directory);
4574 free(arg_template);
4575 free(arg_image);
4576 free(arg_machine);
4577 free(arg_hostname);
4578 free(arg_user);
4579 free(arg_pivot_root_new);
4580 free(arg_pivot_root_old);
4581 free(arg_chdir);
4582 strv_free(arg_setenv);
4583 free(arg_network_bridge);
4584 strv_free(arg_network_interfaces);
4585 strv_free(arg_network_macvlan);
4586 strv_free(arg_network_ipvlan);
4587 strv_free(arg_network_veth_extra);
4588 strv_free(arg_parameters);
4589 free(arg_network_zone);
4590 free(arg_network_namespace_path);
4591 strv_free(arg_property);
4592 custom_mount_free_all(arg_custom_mounts, arg_n_custom_mounts);
4593 expose_port_free_all(arg_expose_ports);
4594 free(arg_root_hash);
4595 rlimit_free_all(arg_rlimit);
4596 strv_free(arg_syscall_whitelist);
4597 strv_free(arg_syscall_blacklist);
4598 cpu_set_reset(&arg_cpu_set);
4599
4600 return r < 0 ? EXIT_FAILURE1 : ret;
4601}