Bug Summary

File:build-scan/../src/libsystemd/sd-login/sd-login.c
Warning:line 1016, column 9
Value stored to 'fd' 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 sd-login.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 pic -pic-level 2 -fhalf-no-semantic-interposition -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 src/libsystemd/libsystemd_static.a.p -I src/libsystemd -I ../src/libsystemd -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 . -I .. -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 default -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/libsystemd/sd-login/sd-login.c
1/* SPDX-License-Identifier: LGPL-2.1+ */
2/***
3***/
4
5#include <errno(*__errno_location ()).h>
6#include <poll.h>
7#include <string.h>
8#include <sys/inotify.h>
9#include <unistd.h>
10
11#include "sd-login.h"
12
13#include "alloc-util.h"
14#include "cgroup-util.h"
15#include "dirent-util.h"
16#include "escape.h"
17#include "fd-util.h"
18#include "fileio.h"
19#include "format-util.h"
20#include "fs-util.h"
21#include "hostname-util.h"
22#include "io-util.h"
23#include "login-util.h"
24#include "macro.h"
25#include "parse-util.h"
26#include "path-util.h"
27#include "socket-util.h"
28#include "string-util.h"
29#include "strv.h"
30#include "user-util.h"
31#include "util.h"
32
33/* Error codes:
34 *
35 * invalid input parameters → -EINVAL
36 * invalid fd → -EBADF
37 * process does not exist → -ESRCH
38 * cgroup does not exist → -ENOENT
39 * machine, session does not exist → -ENXIO
40 * requested metadata on object is missing → -ENODATA
41 */
42
43_public___attribute__ ((visibility("default"))) int sd_pid_get_session(pid_t pid, char **session) {
44 int r;
45
46 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 46, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
47 assert_return(session, -EINVAL)do { if (!(((__builtin_expect(!!(session),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("session"), "../src/libsystemd/sd-login/sd-login.c"
, 47, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
48
49 r = cg_pid_get_session(pid, session);
50 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
51}
52
53_public___attribute__ ((visibility("default"))) int sd_pid_get_unit(pid_t pid, char **unit) {
54 int r;
55
56 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 56, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
57 assert_return(unit, -EINVAL)do { if (!(((__builtin_expect(!!(unit),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("unit"), "../src/libsystemd/sd-login/sd-login.c"
, 57, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
58
59 r = cg_pid_get_unit(pid, unit);
60 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
61}
62
63_public___attribute__ ((visibility("default"))) int sd_pid_get_user_unit(pid_t pid, char **unit) {
64 int r;
65
66 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 66, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
67 assert_return(unit, -EINVAL)do { if (!(((__builtin_expect(!!(unit),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("unit"), "../src/libsystemd/sd-login/sd-login.c"
, 67, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
68
69 r = cg_pid_get_user_unit(pid, unit);
70 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
71}
72
73_public___attribute__ ((visibility("default"))) int sd_pid_get_machine_name(pid_t pid, char **name) {
74 int r;
75
76 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 76, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
77 assert_return(name, -EINVAL)do { if (!(((__builtin_expect(!!(name),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("name"), "../src/libsystemd/sd-login/sd-login.c"
, 77, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
78
79 r = cg_pid_get_machine_name(pid, name);
80 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
81}
82
83_public___attribute__ ((visibility("default"))) int sd_pid_get_slice(pid_t pid, char **slice) {
84 int r;
85
86 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 86, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
87 assert_return(slice, -EINVAL)do { if (!(((__builtin_expect(!!(slice),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("slice"), "../src/libsystemd/sd-login/sd-login.c"
, 87, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
88
89 r = cg_pid_get_slice(pid, slice);
90 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
91}
92
93_public___attribute__ ((visibility("default"))) int sd_pid_get_user_slice(pid_t pid, char **slice) {
94 int r;
95
96 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 96, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
97 assert_return(slice, -EINVAL)do { if (!(((__builtin_expect(!!(slice),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("slice"), "../src/libsystemd/sd-login/sd-login.c"
, 97, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
98
99 r = cg_pid_get_user_slice(pid, slice);
100 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
101}
102
103_public___attribute__ ((visibility("default"))) int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) {
104 int r;
105
106 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 106, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
107 assert_return(uid, -EINVAL)do { if (!(((__builtin_expect(!!(uid),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("uid"), "../src/libsystemd/sd-login/sd-login.c"
, 107, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
108
109 r = cg_pid_get_owner_uid(pid, uid);
110 return IN_SET(r, -ENXIO, -ENOMEDIUM)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){-6, -123})/sizeof(int)]; switch(r) { case
-6: case -123: _found = 1; break; default: break; } _found; }
) ? -ENODATA61 : r;
111}
112
113_public___attribute__ ((visibility("default"))) int sd_pid_get_cgroup(pid_t pid, char **cgroup) {
114 char *c;
115 int r;
116
117 assert_return(pid >= 0, -EINVAL)do { if (!(((__builtin_expect(!!(pid >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 117, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
118 assert_return(cgroup, -EINVAL)do { if (!(((__builtin_expect(!!(cgroup),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("cgroup"), "../src/libsystemd/sd-login/sd-login.c"
, 118, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
119
120 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER"_systemd", pid, &c);
121 if (r < 0)
122 return r;
123
124 /* The internal APIs return the empty string for the root
125 * cgroup, let's return the "/" in the public APIs instead, as
126 * that's easier and less ambiguous for people to grok. */
127 if (isempty(c)) {
128 free(c);
129 c = strdup("/");
130 if (!c)
131 return -ENOMEM12;
132
133 }
134
135 *cgroup = c;
136 return 0;
137}
138
139_public___attribute__ ((visibility("default"))) int sd_peer_get_session(int fd, char **session) {
140 struct ucred ucred = {};
141 int r;
142
143 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 143, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
144 assert_return(session, -EINVAL)do { if (!(((__builtin_expect(!!(session),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("session"), "../src/libsystemd/sd-login/sd-login.c"
, 144, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
145
146 r = getpeercred(fd, &ucred);
147 if (r < 0)
148 return r;
149
150 return cg_pid_get_session(ucred.pid, session);
151}
152
153_public___attribute__ ((visibility("default"))) int sd_peer_get_owner_uid(int fd, uid_t *uid) {
154 struct ucred ucred;
155 int r;
156
157 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 157, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
158 assert_return(uid, -EINVAL)do { if (!(((__builtin_expect(!!(uid),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("uid"), "../src/libsystemd/sd-login/sd-login.c"
, 158, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
159
160 r = getpeercred(fd, &ucred);
161 if (r < 0)
162 return r;
163
164 return cg_pid_get_owner_uid(ucred.pid, uid);
165}
166
167_public___attribute__ ((visibility("default"))) int sd_peer_get_unit(int fd, char **unit) {
168 struct ucred ucred;
169 int r;
170
171 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 171, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
172 assert_return(unit, -EINVAL)do { if (!(((__builtin_expect(!!(unit),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("unit"), "../src/libsystemd/sd-login/sd-login.c"
, 172, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
173
174 r = getpeercred(fd, &ucred);
175 if (r < 0)
176 return r;
177
178 return cg_pid_get_unit(ucred.pid, unit);
179}
180
181_public___attribute__ ((visibility("default"))) int sd_peer_get_user_unit(int fd, char **unit) {
182 struct ucred ucred;
183 int r;
184
185 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 185, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
186 assert_return(unit, -EINVAL)do { if (!(((__builtin_expect(!!(unit),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("unit"), "../src/libsystemd/sd-login/sd-login.c"
, 186, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
187
188 r = getpeercred(fd, &ucred);
189 if (r < 0)
190 return r;
191
192 return cg_pid_get_user_unit(ucred.pid, unit);
193}
194
195_public___attribute__ ((visibility("default"))) int sd_peer_get_machine_name(int fd, char **machine) {
196 struct ucred ucred;
197 int r;
198
199 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 199, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
200 assert_return(machine, -EINVAL)do { if (!(((__builtin_expect(!!(machine),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("machine"), "../src/libsystemd/sd-login/sd-login.c"
, 200, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
201
202 r = getpeercred(fd, &ucred);
203 if (r < 0)
204 return r;
205
206 return cg_pid_get_machine_name(ucred.pid, machine);
207}
208
209_public___attribute__ ((visibility("default"))) int sd_peer_get_slice(int fd, char **slice) {
210 struct ucred ucred;
211 int r;
212
213 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 213, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
214 assert_return(slice, -EINVAL)do { if (!(((__builtin_expect(!!(slice),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("slice"), "../src/libsystemd/sd-login/sd-login.c"
, 214, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
215
216 r = getpeercred(fd, &ucred);
217 if (r < 0)
218 return r;
219
220 return cg_pid_get_slice(ucred.pid, slice);
221}
222
223_public___attribute__ ((visibility("default"))) int sd_peer_get_user_slice(int fd, char **slice) {
224 struct ucred ucred;
225 int r;
226
227 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 227, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
228 assert_return(slice, -EINVAL)do { if (!(((__builtin_expect(!!(slice),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("slice"), "../src/libsystemd/sd-login/sd-login.c"
, 228, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
229
230 r = getpeercred(fd, &ucred);
231 if (r < 0)
232 return r;
233
234 return cg_pid_get_user_slice(ucred.pid, slice);
235}
236
237_public___attribute__ ((visibility("default"))) int sd_peer_get_cgroup(int fd, char **cgroup) {
238 struct ucred ucred;
239 int r;
240
241 assert_return(fd >= 0, -EBADF)do { if (!(((__builtin_expect(!!(fd >= 0),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/libsystemd/sd-login/sd-login.c"
, 241, __PRETTY_FUNCTION__), 0))) return (-9); } while (0);
242 assert_return(cgroup, -EINVAL)do { if (!(((__builtin_expect(!!(cgroup),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("cgroup"), "../src/libsystemd/sd-login/sd-login.c"
, 242, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
243
244 r = getpeercred(fd, &ucred);
245 if (r < 0)
246 return r;
247
248 return sd_pid_get_cgroup(ucred.pid, cgroup);
249}
250
251static int file_of_uid(uid_t uid, char **p) {
252
253 assert_return(uid_is_valid(uid), -EINVAL)do { if (!(((__builtin_expect(!!(uid_is_valid(uid)),1))) ? (1
) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("uid_is_valid(uid)"
), "../src/libsystemd/sd-login/sd-login.c", 253, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
254 assert(p)do { if ((__builtin_expect(!!(!(p)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("p"), "../src/libsystemd/sd-login/sd-login.c"
, 254, __PRETTY_FUNCTION__); } while (0);
255
256 if (asprintf(p, "/run/systemd/users/" UID_FMT"%" "u", uid) < 0)
257 return -ENOMEM12;
258
259 return 0;
260}
261
262_public___attribute__ ((visibility("default"))) int sd_uid_get_state(uid_t uid, char**state) {
263 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0);
264 char *s = NULL((void*)0);
265 int r;
266
267 assert_return(state, -EINVAL)do { if (!(((__builtin_expect(!!(state),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("state"), "../src/libsystemd/sd-login/sd-login.c"
, 267, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
268
269 r = file_of_uid(uid, &p);
270 if (r < 0)
271 return r;
272
273 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "STATE", &s, NULL((void*)0));
274 if (r == -ENOENT2) {
275 free(s);
276 s = strdup("offline");
277 if (!s)
278 return -ENOMEM12;
279
280 }
281 else if (r < 0) {
282 free(s);
283 return r;
284 }
285 if (isempty(s)) {
286 free(s);
287 return -EIO5;
288 }
289
290 *state = s;
291 return 0;
292}
293
294_public___attribute__ ((visibility("default"))) int sd_uid_get_display(uid_t uid, char **session) {
295 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
296 int r;
297
298 assert_return(session, -EINVAL)do { if (!(((__builtin_expect(!!(session),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("session"), "../src/libsystemd/sd-login/sd-login.c"
, 298, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
299
300 r = file_of_uid(uid, &p);
301 if (r < 0)
302 return r;
303
304 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "DISPLAY", &s, NULL((void*)0));
305 if (r == -ENOENT2)
306 return -ENODATA61;
307 if (r < 0)
308 return r;
309 if (isempty(s))
310 return -ENODATA61;
311
312 *session = TAKE_PTR(s)({ typeof(s) _ptr_ = (s); (s) = ((void*)0); _ptr_; });
313
314 return 0;
315}
316
317static int file_of_seat(const char *seat, char **_p) {
318 char *p;
319 int r;
320
321 assert(_p)do { if ((__builtin_expect(!!(!(_p)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("_p"), "../src/libsystemd/sd-login/sd-login.c"
, 321, __PRETTY_FUNCTION__); } while (0);
322
323 if (seat) {
324 if (!filename_is_valid(seat))
325 return -EINVAL22;
326
327 p = strappend("/run/systemd/seats/", seat);
328 } else {
329 _cleanup_free___attribute__((cleanup(freep))) char *buf = NULL((void*)0);
330
331 r = sd_session_get_seat(NULL((void*)0), &buf);
332 if (r < 0)
333 return r;
334
335 p = strappend("/run/systemd/seats/", buf);
336 }
337
338 if (!p)
339 return -ENOMEM12;
340
341 *_p = TAKE_PTR(p)({ typeof(p) _ptr_ = (p); (p) = ((void*)0); _ptr_; });
342 return 0;
343}
344
345_public___attribute__ ((visibility("default"))) int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat) {
346 _cleanup_free___attribute__((cleanup(freep))) char *t = NULL((void*)0), *s = NULL((void*)0), *p = NULL((void*)0);
347 size_t l;
348 int r;
349 const char *word, *variable, *state;
350
351 assert_return(uid_is_valid(uid), -EINVAL)do { if (!(((__builtin_expect(!!(uid_is_valid(uid)),1))) ? (1
) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("uid_is_valid(uid)"
), "../src/libsystemd/sd-login/sd-login.c", 351, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
352
353 r = file_of_seat(seat, &p);
354 if (r < 0)
355 return r;
356
357 variable = require_active ? "ACTIVE_UID" : "UIDS";
358
359 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", variable, &s, NULL((void*)0));
360 if (r == -ENOENT2)
361 return 0;
362 if (r < 0)
363 return r;
364 if (isempty(s))
365 return 0;
366
367 if (asprintf(&t, UID_FMT"%" "u", uid) < 0)
368 return -ENOMEM12;
369
370 FOREACH_WORD(word, l, s, state)for ((state) = (s), (word) = split(&(state), &(l), (" \t\n\r"
), (0)); (word); (word) = split(&(state), &(l), (" \t\n\r"
), (0)))
371 if (strneq(t, word, l)(strncmp((t), (word), (l)) == 0))
372 return 1;
373
374 return 0;
375}
376
377static int uid_get_array(uid_t uid, const char *variable, char ***array) {
378 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
379 char **a;
380 int r;
381
382 assert(variable)do { if ((__builtin_expect(!!(!(variable)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("variable"), "../src/libsystemd/sd-login/sd-login.c"
, 382, __PRETTY_FUNCTION__); } while (0);
383
384 r = file_of_uid(uid, &p);
385 if (r < 0)
386 return r;
387
388 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", variable, &s, NULL((void*)0));
389 if (r == -ENOENT2 || (r >= 0 && isempty(s))) {
390 if (array)
391 *array = NULL((void*)0);
392 return 0;
393 }
394 if (r < 0)
395 return r;
396
397 a = strv_split(s, " ");
398 if (!a)
399 return -ENOMEM12;
400
401 strv_uniq(a);
402 r = (int) strv_length(a);
403
404 if (array)
405 *array = a;
406 else
407 strv_free(a);
408
409 return r;
410}
411
412_public___attribute__ ((visibility("default"))) int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions) {
413 return uid_get_array(
414 uid,
415 require_active == 0 ? "ONLINE_SESSIONS" :
416 require_active > 0 ? "ACTIVE_SESSIONS" :
417 "SESSIONS",
418 sessions);
419}
420
421_public___attribute__ ((visibility("default"))) int sd_uid_get_seats(uid_t uid, int require_active, char ***seats) {
422 return uid_get_array(
423 uid,
424 require_active == 0 ? "ONLINE_SEATS" :
425 require_active > 0 ? "ACTIVE_SEATS" :
426 "SEATS",
427 seats);
428}
429
430static int file_of_session(const char *session, char **_p) {
431 char *p;
432 int r;
433
434 assert(_p)do { if ((__builtin_expect(!!(!(_p)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("_p"), "../src/libsystemd/sd-login/sd-login.c"
, 434, __PRETTY_FUNCTION__); } while (0);
435
436 if (session) {
437 if (!session_id_valid(session))
438 return -EINVAL22;
439
440 p = strappend("/run/systemd/sessions/", session);
441 } else {
442 _cleanup_free___attribute__((cleanup(freep))) char *buf = NULL((void*)0);
443
444 r = sd_pid_get_session(0, &buf);
445 if (r < 0)
446 return r;
447
448 p = strappend("/run/systemd/sessions/", buf);
449 }
450
451 if (!p)
452 return -ENOMEM12;
453
454 *_p = p;
455 return 0;
456}
457
458_public___attribute__ ((visibility("default"))) int sd_session_is_active(const char *session) {
459 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
460 int r;
461
462 r = file_of_session(session, &p);
463 if (r < 0)
464 return r;
465
466 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "ACTIVE", &s, NULL((void*)0));
467 if (r == -ENOENT2)
468 return -ENXIO6;
469 if (r < 0)
470 return r;
471 if (isempty(s))
472 return -EIO5;
473
474 return parse_boolean(s);
475}
476
477_public___attribute__ ((visibility("default"))) int sd_session_is_remote(const char *session) {
478 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
479 int r;
480
481 r = file_of_session(session, &p);
482 if (r < 0)
483 return r;
484
485 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "REMOTE", &s, NULL((void*)0));
486 if (r == -ENOENT2)
487 return -ENXIO6;
488 if (r < 0)
489 return r;
490 if (isempty(s))
491 return -ENODATA61;
492
493 return parse_boolean(s);
494}
495
496_public___attribute__ ((visibility("default"))) int sd_session_get_state(const char *session, char **state) {
497 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
498 int r;
499
500 assert_return(state, -EINVAL)do { if (!(((__builtin_expect(!!(state),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("state"), "../src/libsystemd/sd-login/sd-login.c"
, 500, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
501
502 r = file_of_session(session, &p);
503 if (r < 0)
504 return r;
505
506 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "STATE", &s, NULL((void*)0));
507 if (r == -ENOENT2)
508 return -ENXIO6;
509 if (r < 0)
510 return r;
511 if (isempty(s))
512 return -EIO5;
513
514 *state = TAKE_PTR(s)({ typeof(s) _ptr_ = (s); (s) = ((void*)0); _ptr_; });
515
516 return 0;
517}
518
519_public___attribute__ ((visibility("default"))) int sd_session_get_uid(const char *session, uid_t *uid) {
520 int r;
521 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
522
523 assert_return(uid, -EINVAL)do { if (!(((__builtin_expect(!!(uid),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("uid"), "../src/libsystemd/sd-login/sd-login.c"
, 523, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
524
525 r = file_of_session(session, &p);
526 if (r < 0)
527 return r;
528
529 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "UID", &s, NULL((void*)0));
530 if (r == -ENOENT2)
531 return -ENXIO6;
532 if (r < 0)
533 return r;
534 if (isempty(s))
535 return -EIO5;
536
537 return parse_uid(s, uid);
538}
539
540static int session_get_string(const char *session, const char *field, char **value) {
541 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
542 int r;
543
544 assert_return(value, -EINVAL)do { if (!(((__builtin_expect(!!(value),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("value"), "../src/libsystemd/sd-login/sd-login.c"
, 544, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
545 assert(field)do { if ((__builtin_expect(!!(!(field)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("field"), "../src/libsystemd/sd-login/sd-login.c"
, 545, __PRETTY_FUNCTION__); } while (0);
546
547 r = file_of_session(session, &p);
548 if (r < 0)
549 return r;
550
551 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", field, &s, NULL((void*)0));
552 if (r == -ENOENT2)
553 return -ENXIO6;
554 if (r < 0)
555 return r;
556 if (isempty(s))
557 return -ENODATA61;
558
559 *value = TAKE_PTR(s)({ typeof(s) _ptr_ = (s); (s) = ((void*)0); _ptr_; });
560 return 0;
561}
562
563_public___attribute__ ((visibility("default"))) int sd_session_get_seat(const char *session, char **seat) {
564 return session_get_string(session, "SEAT", seat);
565}
566
567_public___attribute__ ((visibility("default"))) int sd_session_get_tty(const char *session, char **tty) {
568 return session_get_string(session, "TTY", tty);
569}
570
571_public___attribute__ ((visibility("default"))) int sd_session_get_vt(const char *session, unsigned *vtnr) {
572 _cleanup_free___attribute__((cleanup(freep))) char *vtnr_string = NULL((void*)0);
573 unsigned u;
574 int r;
575
576 assert_return(vtnr, -EINVAL)do { if (!(((__builtin_expect(!!(vtnr),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("vtnr"), "../src/libsystemd/sd-login/sd-login.c"
, 576, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
577
578 r = session_get_string(session, "VTNR", &vtnr_string);
579 if (r < 0)
580 return r;
581
582 r = safe_atou(vtnr_string, &u);
583 if (r < 0)
584 return r;
585
586 *vtnr = u;
587 return 0;
588}
589
590_public___attribute__ ((visibility("default"))) int sd_session_get_service(const char *session, char **service) {
591 return session_get_string(session, "SERVICE", service);
592}
593
594_public___attribute__ ((visibility("default"))) int sd_session_get_type(const char *session, char **type) {
595 return session_get_string(session, "TYPE", type);
596}
597
598_public___attribute__ ((visibility("default"))) int sd_session_get_class(const char *session, char **class) {
599 return session_get_string(session, "CLASS", class);
600}
601
602_public___attribute__ ((visibility("default"))) int sd_session_get_desktop(const char *session, char **desktop) {
603 _cleanup_free___attribute__((cleanup(freep))) char *escaped = NULL((void*)0);
604 char *t;
605 int r;
606
607 assert_return(desktop, -EINVAL)do { if (!(((__builtin_expect(!!(desktop),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("desktop"), "../src/libsystemd/sd-login/sd-login.c"
, 607, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
608
609 r = session_get_string(session, "DESKTOP", &escaped);
610 if (r < 0)
611 return r;
612
613 r = cunescape(escaped, 0, &t);
614 if (r < 0)
615 return r;
616
617 *desktop = t;
618 return 0;
619}
620
621_public___attribute__ ((visibility("default"))) int sd_session_get_display(const char *session, char **display) {
622 return session_get_string(session, "DISPLAY", display);
623}
624
625_public___attribute__ ((visibility("default"))) int sd_session_get_remote_user(const char *session, char **remote_user) {
626 return session_get_string(session, "REMOTE_USER", remote_user);
627}
628
629_public___attribute__ ((visibility("default"))) int sd_session_get_remote_host(const char *session, char **remote_host) {
630 return session_get_string(session, "REMOTE_HOST", remote_host);
631}
632
633_public___attribute__ ((visibility("default"))) int sd_seat_get_active(const char *seat, char **session, uid_t *uid) {
634 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0), *t = NULL((void*)0);
635 int r;
636
637 assert_return(session || uid, -EINVAL)do { if (!(((__builtin_expect(!!(session || uid),1))) ? (1) :
(log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("session || uid"
), "../src/libsystemd/sd-login/sd-login.c", 637, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
638
639 r = file_of_seat(seat, &p);
640 if (r < 0)
641 return r;
642
643 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r",
644 "ACTIVE", &s,
645 "ACTIVE_UID", &t,
646 NULL((void*)0));
647 if (r == -ENOENT2)
648 return -ENXIO6;
649 if (r < 0)
650 return r;
651
652 if (session && !s)
653 return -ENODATA61;
654
655 if (uid && !t)
656 return -ENODATA61;
657
658 if (uid && t) {
659 r = parse_uid(t, uid);
660 if (r < 0)
661 return r;
662 }
663
664 if (session && s)
665 *session = TAKE_PTR(s)({ typeof(s) _ptr_ = (s); (s) = ((void*)0); _ptr_; });
666
667 return 0;
668}
669
670_public___attribute__ ((visibility("default"))) int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uids, unsigned *n_uids) {
671 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0), *t = NULL((void*)0);
672 _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **a = NULL((void*)0);
673 _cleanup_free___attribute__((cleanup(freep))) uid_t *b = NULL((void*)0);
674 unsigned n = 0;
675 int r;
676
677 r = file_of_seat(seat, &p);
678 if (r < 0)
679 return r;
680
681 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r",
682 "SESSIONS", &s,
683 "UIDS", &t,
684 NULL((void*)0));
685 if (r == -ENOENT2)
686 return -ENXIO6;
687 if (r < 0)
688 return r;
689
690 if (s) {
691 a = strv_split(s, " ");
692 if (!a)
693 return -ENOMEM12;
694 }
695
696 if (uids && t) {
697 const char *word, *state;
698 size_t l;
699
700 FOREACH_WORD(word, l, t, state)for ((state) = (t), (word) = split(&(state), &(l), (" \t\n\r"
), (0)); (word); (word) = split(&(state), &(l), (" \t\n\r"
), (0)))
701 n++;
702
703 if (n > 0) {
704 unsigned i = 0;
705
706 b = new(uid_t, n)((uid_t*) malloc_multiply(sizeof(uid_t), (n)));
707 if (!b)
708 return -ENOMEM12;
709
710 FOREACH_WORD(word, l, t, state)for ((state) = (t), (word) = split(&(state), &(l), (" \t\n\r"
), (0)); (word); (word) = split(&(state), &(l), (" \t\n\r"
), (0))) {
711 _cleanup_free___attribute__((cleanup(freep))) char *k = NULL((void*)0);
712
713 k = strndup(word, l);
714 if (!k)
715 return -ENOMEM12;
716
717 r = parse_uid(k, b + i);
718 if (r < 0)
719 return r;
720
721 i++;
722 }
723 }
724 }
725
726 r = (int) strv_length(a);
727
728 if (sessions)
729 *sessions = TAKE_PTR(a)({ typeof(a) _ptr_ = (a); (a) = ((void*)0); _ptr_; });
730
731 if (uids)
732 *uids = TAKE_PTR(b)({ typeof(b) _ptr_ = (b); (b) = ((void*)0); _ptr_; });
733
734 if (n_uids)
735 *n_uids = n;
736
737 return r;
738}
739
740static int seat_get_can(const char *seat, const char *variable) {
741 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0), *s = NULL((void*)0);
742 int r;
743
744 assert(variable)do { if ((__builtin_expect(!!(!(variable)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("variable"), "../src/libsystemd/sd-login/sd-login.c"
, 744, __PRETTY_FUNCTION__); } while (0);
745
746 r = file_of_seat(seat, &p);
747 if (r < 0)
748 return r;
749
750 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r",
751 variable, &s,
752 NULL((void*)0));
753 if (r == -ENOENT2)
754 return -ENXIO6;
755 if (r < 0)
756 return r;
757 if (isempty(s))
758 return -ENODATA61;
759
760 return parse_boolean(s);
761}
762
763_public___attribute__ ((visibility("default"))) int sd_seat_can_multi_session(const char *seat) {
764 return seat_get_can(seat, "CAN_MULTI_SESSION");
765}
766
767_public___attribute__ ((visibility("default"))) int sd_seat_can_tty(const char *seat) {
768 return seat_get_can(seat, "CAN_TTY");
769}
770
771_public___attribute__ ((visibility("default"))) int sd_seat_can_graphical(const char *seat) {
772 return seat_get_can(seat, "CAN_GRAPHICAL");
773}
774
775_public___attribute__ ((visibility("default"))) int sd_get_seats(char ***seats) {
776 int r;
777
778 r = get_files_in_directory("/run/systemd/seats/", seats);
779 if (r == -ENOENT2) {
780 if (seats)
781 *seats = NULL((void*)0);
782 return 0;
783 }
784 return r;
785}
786
787_public___attribute__ ((visibility("default"))) int sd_get_sessions(char ***sessions) {
788 int r;
789
790 r = get_files_in_directory("/run/systemd/sessions/", sessions);
791 if (r == -ENOENT2) {
792 if (sessions)
793 *sessions = NULL((void*)0);
794 return 0;
795 }
796 return r;
797}
798
799_public___attribute__ ((visibility("default"))) int sd_get_uids(uid_t **users) {
800 _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d;
801 struct dirent *de;
802 int r = 0;
803 unsigned n = 0;
804 _cleanup_free___attribute__((cleanup(freep))) uid_t *l = NULL((void*)0);
805
806 d = opendir("/run/systemd/users/");
807 if (!d) {
808 if (errno(*__errno_location ()) == ENOENT2) {
809 if (users)
810 *users = NULL((void*)0);
811 return 0;
812 }
813 return -errno(*__errno_location ());
814 }
815
816 FOREACH_DIRENT_ALL(de, d, return -errno)for ((*__errno_location ()) = 0, de = readdir(d);; (*__errno_location
()) = 0, de = readdir(d)) if (!de) { if ((*__errno_location (
)) > 0) { return -(*__errno_location ()); } break; } else {
817 int k;
818 uid_t uid;
819
820 dirent_ensure_type(d, de);
821
822 if (!dirent_is_file(de))
823 continue;
824
825 k = parse_uid(de->d_name, &uid);
826 if (k < 0)
827 continue;
828
829 if (users) {
830 if ((unsigned) r >= n) {
831 uid_t *t;
832
833 n = MAX(16, 2*r)__extension__ ({ const typeof((16)) __unique_prefix_A18 = ((16
)); const typeof((2*r)) __unique_prefix_B19 = ((2*r)); __unique_prefix_A18
> __unique_prefix_B19 ? __unique_prefix_A18 : __unique_prefix_B19
; });
834 t = realloc(l, sizeof(uid_t) * n);
835 if (!t)
836 return -ENOMEM12;
837
838 l = t;
839 }
840
841 assert((unsigned) r < n)do { if ((__builtin_expect(!!(!((unsigned) r < n)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("(unsigned) r < n"), "../src/libsystemd/sd-login/sd-login.c"
, 841, __PRETTY_FUNCTION__); } while (0);
842 l[r++] = uid;
843 } else
844 r++;
845 }
846
847 if (users)
848 *users = TAKE_PTR(l)({ typeof(l) _ptr_ = (l); (l) = ((void*)0); _ptr_; });
849
850 return r;
851}
852
853_public___attribute__ ((visibility("default"))) int sd_get_machine_names(char ***machines) {
854 _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **l = NULL((void*)0);
855 char **a, **b;
856 int r;
857
858 r = get_files_in_directory("/run/systemd/machines/", &l);
859 if (r == -ENOENT2) {
860 if (machines)
861 *machines = NULL((void*)0);
862 return 0;
863 }
864 if (r < 0)
865 return r;
866
867 if (l) {
868 r = 0;
869
870 /* Filter out the unit: symlinks */
871 for (a = b = l; *a; a++) {
872 if (startswith(*a, "unit:") || !machine_name_is_valid(*a)hostname_is_valid(*a, 0))
873 free(*a);
874 else {
875 *b = *a;
876 b++;
877 r++;
878 }
879 }
880
881 *b = NULL((void*)0);
882 }
883
884 if (machines)
885 *machines = TAKE_PTR(l)({ typeof(l) _ptr_ = (l); (l) = ((void*)0); _ptr_; });
886
887 return r;
888}
889
890_public___attribute__ ((visibility("default"))) int sd_machine_get_class(const char *machine, char **class) {
891 _cleanup_free___attribute__((cleanup(freep))) char *c = NULL((void*)0);
892 const char *p;
893 int r;
894
895 assert_return(class, -EINVAL)do { if (!(((__builtin_expect(!!(class),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("class"), "../src/libsystemd/sd-login/sd-login.c"
, 895, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
896
897 if (streq(machine, ".host")(strcmp((machine),(".host")) == 0)) {
898 c = strdup("host");
899 if (!c)
900 return -ENOMEM12;
901 } else {
902 if (!machine_name_is_valid(machine)hostname_is_valid(machine, 0))
903 return -EINVAL22;
904
905 p = strjoina("/run/systemd/machines/", machine)({ const char *_appendees_[] = { "/run/systemd/machines/", 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_; });
906 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "CLASS", &c, NULL((void*)0));
907 if (r == -ENOENT2)
908 return -ENXIO6;
909 if (r < 0)
910 return r;
911 if (!c)
912 return -EIO5;
913 }
914
915 *class = TAKE_PTR(c)({ typeof(c) _ptr_ = (c); (c) = ((void*)0); _ptr_; });
916 return 0;
917}
918
919_public___attribute__ ((visibility("default"))) int sd_machine_get_ifindices(const char *machine, int **ifindices) {
920 _cleanup_free___attribute__((cleanup(freep))) char *netif = NULL((void*)0);
921 size_t l, allocated = 0, nr = 0;
922 int *ni = NULL((void*)0);
923 const char *p, *word, *state;
924 int r;
925
926 assert_return(machine_name_is_valid(machine), -EINVAL)do { if (!(((__builtin_expect(!!(hostname_is_valid(machine, 0
)),1))) ? (1) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD
, ("machine_name_is_valid(machine)"), "../src/libsystemd/sd-login/sd-login.c"
, 926, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
927 assert_return(ifindices, -EINVAL)do { if (!(((__builtin_expect(!!(ifindices),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("ifindices"), "../src/libsystemd/sd-login/sd-login.c"
, 927, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
928
929 p = strjoina("/run/systemd/machines/", machine)({ const char *_appendees_[] = { "/run/systemd/machines/", 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_; });
930 r = parse_env_file(NULL((void*)0), p, NEWLINE"\n\r", "NETIF", &netif, NULL((void*)0));
931 if (r == -ENOENT2)
932 return -ENXIO6;
933 if (r < 0)
934 return r;
935 if (!netif) {
936 *ifindices = NULL((void*)0);
937 return 0;
938 }
939
940 FOREACH_WORD(word, l, netif, state)for ((state) = (netif), (word) = split(&(state), &(l)
, (" \t\n\r"), (0)); (word); (word) = split(&(state), &
(l), (" \t\n\r"), (0))) {
941 char buf[l+1];
942 int ifi;
943
944 *(char*) (mempcpy(buf, word, l)) = 0;
945
946 if (parse_ifindex(buf, &ifi) < 0)
947 continue;
948
949 if (!GREEDY_REALLOC(ni, allocated, nr+1)greedy_realloc((void**) &(ni), &(allocated), (nr+1), sizeof
((ni)[0]))) {
950 free(ni);
951 return -ENOMEM12;
952 }
953
954 ni[nr++] = ifi;
955 }
956
957 *ifindices = ni;
958 return nr;
959}
960
961static inline int MONITOR_TO_FD(sd_login_monitor *m) {
962 return (int) (unsigned long) m - 1;
963}
964
965static inline sd_login_monitor* FD_TO_MONITOR(int fd) {
966 return (sd_login_monitor*) (unsigned long) (fd + 1);
967}
968
969_public___attribute__ ((visibility("default"))) int sd_login_monitor_new(const char *category, sd_login_monitor **m) {
970 _cleanup_close___attribute__((cleanup(closep))) int fd = -1;
971 bool_Bool good = false0;
972 int k;
973
974 assert_return(m, -EINVAL)do { if (!(((__builtin_expect(!!(m),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/libsystemd/sd-login/sd-login.c"
, 974, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
975
976 fd = inotify_init1(IN_NONBLOCKIN_NONBLOCK|IN_CLOEXECIN_CLOEXEC);
977 if (fd < 0)
978 return -errno(*__errno_location ());
979
980 if (!category || streq(category, "seat")(strcmp((category),("seat")) == 0)) {
981 k = inotify_add_watch(fd, "/run/systemd/seats/", IN_MOVED_TO0x00000080|IN_DELETE0x00000200);
982 if (k < 0)
983 return -errno(*__errno_location ());
984
985 good = true1;
986 }
987
988 if (!category || streq(category, "session")(strcmp((category),("session")) == 0)) {
989 k = inotify_add_watch(fd, "/run/systemd/sessions/", IN_MOVED_TO0x00000080|IN_DELETE0x00000200);
990 if (k < 0)
991 return -errno(*__errno_location ());
992
993 good = true1;
994 }
995
996 if (!category || streq(category, "uid")(strcmp((category),("uid")) == 0)) {
997 k = inotify_add_watch(fd, "/run/systemd/users/", IN_MOVED_TO0x00000080|IN_DELETE0x00000200);
998 if (k < 0)
999 return -errno(*__errno_location ());
1000
1001 good = true1;
1002 }
1003
1004 if (!category || streq(category, "machine")(strcmp((category),("machine")) == 0)) {
1005 k = inotify_add_watch(fd, "/run/systemd/machines/", IN_MOVED_TO0x00000080|IN_DELETE0x00000200);
1006 if (k < 0)
1007 return -errno(*__errno_location ());
1008
1009 good = true1;
1010 }
1011
1012 if (!good)
1013 return -EINVAL22;
1014
1015 *m = FD_TO_MONITOR(fd);
1016 fd = -1;
Value stored to 'fd' is never read
1017
1018 return 0;
1019}
1020
1021_public___attribute__ ((visibility("default"))) sd_login_monitor* sd_login_monitor_unref(sd_login_monitor *m) {
1022 int fd;
1023
1024 if (!m)
1025 return NULL((void*)0);
1026
1027 fd = MONITOR_TO_FD(m);
1028 close_nointr(fd);
1029
1030 return NULL((void*)0);
1031}
1032
1033_public___attribute__ ((visibility("default"))) int sd_login_monitor_flush(sd_login_monitor *m) {
1034 int r;
1035
1036 assert_return(m, -EINVAL)do { if (!(((__builtin_expect(!!(m),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/libsystemd/sd-login/sd-login.c"
, 1036, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
1037
1038 r = flush_fd(MONITOR_TO_FD(m));
1039 if (r < 0)
1040 return r;
1041
1042 return 0;
1043}
1044
1045_public___attribute__ ((visibility("default"))) int sd_login_monitor_get_fd(sd_login_monitor *m) {
1046
1047 assert_return(m, -EINVAL)do { if (!(((__builtin_expect(!!(m),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/libsystemd/sd-login/sd-login.c"
, 1047, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
1048
1049 return MONITOR_TO_FD(m);
1050}
1051
1052_public___attribute__ ((visibility("default"))) int sd_login_monitor_get_events(sd_login_monitor *m) {
1053
1054 assert_return(m, -EINVAL)do { if (!(((__builtin_expect(!!(m),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/libsystemd/sd-login/sd-login.c"
, 1054, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
1055
1056 /* For now we will only return POLLIN here, since we don't
1057 * need anything else ever for inotify. However, let's have
1058 * this API to keep our options open should we later on need
1059 * it. */
1060 return POLLIN0x001;
1061}
1062
1063_public___attribute__ ((visibility("default"))) int sd_login_monitor_get_timeout(sd_login_monitor *m, uint64_t *timeout_usec) {
1064
1065 assert_return(m, -EINVAL)do { if (!(((__builtin_expect(!!(m),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/libsystemd/sd-login/sd-login.c"
, 1065, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
1066 assert_return(timeout_usec, -EINVAL)do { if (!(((__builtin_expect(!!(timeout_usec),1))) ? (1) : (
log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("timeout_usec"
), "../src/libsystemd/sd-login/sd-login.c", 1066, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
1067
1068 /* For now we will only return (uint64_t) -1, since we don't
1069 * need any timeout. However, let's have this API to keep our
1070 * options open should we later on need it. */
1071 *timeout_usec = (uint64_t) -1;
1072 return 0;
1073}