Bug Summary

File:build-scan/../src/login/logind.c
Warning:line 393, column 25
Potential leak of memory pointed to by 'id'

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 logind.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-logind.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 -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/login/logind.c
1/* SPDX-License-Identifier: LGPL-2.1+ */
2
3#include <errno(*__errno_location ()).h>
4#include <fcntl.h>
5#include <string.h>
6#include <unistd.h>
7
8#include "libudev.h"
9#include "sd-daemon.h"
10
11#include "alloc-util.h"
12#include "bus-error.h"
13#include "bus-util.h"
14#include "cgroup-util.h"
15#include "def.h"
16#include "dirent-util.h"
17#include "fd-util.h"
18#include "format-util.h"
19#include "fs-util.h"
20#include "logind.h"
21#include "parse-util.h"
22#include "process-util.h"
23#include "selinux-util.h"
24#include "signal-util.h"
25#include "strv.h"
26#include "udev-util.h"
27
28static Manager* manager_unref(Manager *m);
29DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref)static inline void manager_unrefp(Manager* *p) { if (*p) manager_unref
(*p); };
30
31static int manager_new(Manager **ret) {
32 _cleanup_(manager_unrefp)__attribute__((cleanup(manager_unrefp))) Manager *m = NULL((void*)0);
33 int r;
34
35 assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("ret"), "../src/login/logind.c", 35, __PRETTY_FUNCTION__
); } while (0);
36
37 m = new0(Manager, 1)((Manager*) calloc((1), sizeof(Manager)));
38 if (!m)
39 return -ENOMEM12;
40
41 m->console_active_fd = -1;
42 m->reserve_vt_fd = -1;
43
44 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC1);
45
46 m->devices = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
47 m->seats = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
48 m->sessions = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
49 m->users = hashmap_new(NULL)internal_hashmap_new(((void*)0) );
50 m->inhibitors = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
51 m->buttons = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
52
53 m->user_units = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
54 m->session_units = hashmap_new(&string_hash_ops)internal_hashmap_new(&string_hash_ops );
55
56 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
57 return -ENOMEM12;
58
59 m->udev = udev_new();
60 if (!m->udev)
61 return -errno(*__errno_location ());
62
63 r = sd_event_default(&m->event);
64 if (r < 0)
65 return r;
66
67 r = sd_event_add_signal(m->event, NULL((void*)0), SIGINT2, NULL((void*)0), NULL((void*)0));
68 if (r < 0)
69 return r;
70
71 r = sd_event_add_signal(m->event, NULL((void*)0), SIGTERM15, NULL((void*)0), NULL((void*)0));
72 if (r < 0)
73 return r;
74
75 (void) sd_event_set_watchdog(m->event, true1);
76
77 manager_reset_config(m);
78
79 *ret = TAKE_PTR(m)({ typeof(m) _ptr_ = (m); (m) = ((void*)0); _ptr_; });
80 return 0;
81}
82
83static Manager* manager_unref(Manager *m) {
84 Session *session;
85 User *u;
86 Device *d;
87 Seat *s;
88 Inhibitor *i;
89 Button *b;
90
91 if (!m)
92 return NULL((void*)0);
93
94 while ((session = hashmap_first(m->sessions)))
95 session_free(session);
96
97 while ((u = hashmap_first(m->users)))
98 user_free(u);
99
100 while ((d = hashmap_first(m->devices)))
101 device_free(d);
102
103 while ((s = hashmap_first(m->seats)))
104 seat_free(s);
105
106 while ((i = hashmap_first(m->inhibitors)))
107 inhibitor_free(i);
108
109 while ((b = hashmap_first(m->buttons)))
110 button_free(b);
111
112 hashmap_free(m->devices);
113 hashmap_free(m->seats);
114 hashmap_free(m->sessions);
115 hashmap_free(m->users);
116 hashmap_free(m->inhibitors);
117 hashmap_free(m->buttons);
118
119 hashmap_free(m->user_units);
120 hashmap_free(m->session_units);
121
122 sd_event_source_unref(m->idle_action_event_source);
123 sd_event_source_unref(m->inhibit_timeout_source);
124 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
125 sd_event_source_unref(m->nologin_timeout_source);
126 sd_event_source_unref(m->wall_message_timeout_source);
127
128 sd_event_source_unref(m->console_active_event_source);
129 sd_event_source_unref(m->udev_seat_event_source);
130 sd_event_source_unref(m->udev_device_event_source);
131 sd_event_source_unref(m->udev_vcsa_event_source);
132 sd_event_source_unref(m->udev_button_event_source);
133 sd_event_source_unref(m->lid_switch_ignore_event_source);
134
135 safe_close(m->console_active_fd);
136
137 udev_monitor_unref(m->udev_seat_monitor);
138 udev_monitor_unref(m->udev_device_monitor);
139 udev_monitor_unref(m->udev_vcsa_monitor);
140 udev_monitor_unref(m->udev_button_monitor);
141
142 udev_unref(m->udev);
143
144 if (m->unlink_nologin)
145 (void) unlink_or_warn("/run/nologin");
146
147 bus_verify_polkit_async_registry_free(m->polkit_registry);
148
149 sd_bus_unref(m->bus);
150 sd_event_unref(m->event);
151
152 safe_close(m->reserve_vt_fd);
153
154 strv_free(m->kill_only_users);
155 strv_free(m->kill_exclude_users);
156
157 free(m->scheduled_shutdown_type);
158 free(m->scheduled_shutdown_tty);
159 free(m->wall_message);
160 free(m->action_job);
161
162 return mfree(m);
163}
164
165static int manager_enumerate_devices(Manager *m) {
166 struct udev_list_entry *item = NULL((void*)0), *first = NULL((void*)0);
167 _cleanup_(udev_enumerate_unrefp)__attribute__((cleanup(udev_enumerate_unrefp))) struct udev_enumerate *e = NULL((void*)0);
168 int r;
169
170 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 170, __PRETTY_FUNCTION__
); } while (0);
171
172 /* Loads devices from udev and creates seats for them as
173 * necessary */
174
175 e = udev_enumerate_new(m->udev);
176 if (!e)
177 return -ENOMEM12;
178
179 r = udev_enumerate_add_match_tag(e, "master-of-seat");
180 if (r < 0)
181 return r;
182
183 r = udev_enumerate_add_match_is_initialized(e);
184 if (r < 0)
185 return r;
186
187 r = udev_enumerate_scan_devices(e);
188 if (r < 0)
189 return r;
190
191 first = udev_enumerate_get_list_entry(e);
192 udev_list_entry_foreach(item, first)for (item = first; item != ((void*)0); item = udev_list_entry_get_next
(item)) {
193 _cleanup_(udev_device_unrefp)__attribute__((cleanup(udev_device_unrefp))) struct udev_device *d = NULL((void*)0);
194 int k;
195
196 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
197 if (!d)
198 return -ENOMEM12;
199
200 k = manager_process_seat_device(m, d);
201 if (k < 0)
202 r = k;
203 }
204
205 return r;
206}
207
208static int manager_enumerate_buttons(Manager *m) {
209 _cleanup_(udev_enumerate_unrefp)__attribute__((cleanup(udev_enumerate_unrefp))) struct udev_enumerate *e = NULL((void*)0);
210 struct udev_list_entry *item = NULL((void*)0), *first = NULL((void*)0);
211 int r;
212
213 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 213, __PRETTY_FUNCTION__
); } while (0);
214
215 /* Loads buttons from udev */
216
217 if (manager_all_buttons_ignored(m))
218 return 0;
219
220 e = udev_enumerate_new(m->udev);
221 if (!e)
222 return -ENOMEM12;
223
224 r = udev_enumerate_add_match_subsystem(e, "input");
225 if (r < 0)
226 return r;
227
228 r = udev_enumerate_add_match_tag(e, "power-switch");
229 if (r < 0)
230 return r;
231
232 r = udev_enumerate_add_match_is_initialized(e);
233 if (r < 0)
234 return r;
235
236 r = udev_enumerate_scan_devices(e);
237 if (r < 0)
238 return r;
239
240 first = udev_enumerate_get_list_entry(e);
241 udev_list_entry_foreach(item, first)for (item = first; item != ((void*)0); item = udev_list_entry_get_next
(item)) {
242 _cleanup_(udev_device_unrefp)__attribute__((cleanup(udev_device_unrefp))) struct udev_device *d = NULL((void*)0);
243 int k;
244
245 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
246 if (!d)
247 return -ENOMEM12;
248
249 k = manager_process_button_device(m, d);
250 if (k < 0)
251 r = k;
252 }
253
254 return r;
255}
256
257static int manager_enumerate_seats(Manager *m) {
258 _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0);
259 struct dirent *de;
260 int r = 0;
261
262 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 262, __PRETTY_FUNCTION__
); } while (0);
263
264 /* This loads data about seats stored on disk, but does not
265 * actually create any seats. Removes data of seats that no
266 * longer exist. */
267
268 d = opendir("/run/systemd/seats");
269 if (!d) {
270 if (errno(*__errno_location ()) == ENOENT2)
271 return 0;
272
273 return log_error_errno(errno, "Failed to open /run/systemd/seats: %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/login/logind.c", 273, __func__, "Failed to open /run/systemd/seats: %m"
) : -abs(_e); });
274 }
275
276 FOREACH_DIRENT(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 if
(hidden_or_backup_file((de)->d_name)) continue; else {
277 Seat *s;
278 int k;
279
280 if (!dirent_is_file(de))
281 continue;
282
283 s = hashmap_get(m->seats, de->d_name);
284 if (!s) {
285 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
286 log_warning("Failed to remove /run/systemd/seats/%s: %m",({ 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/login/logind.c", 287, __func__, "Failed to remove /run/systemd/seats/%s: %m"
, de->d_name) : -abs(_e); })
287 de->d_name)({ 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/login/logind.c", 287, __func__, "Failed to remove /run/systemd/seats/%s: %m"
, de->d_name) : -abs(_e); });
288 continue;
289 }
290
291 k = seat_load(s);
292 if (k < 0)
293 r = k;
294 }
295
296 return r;
297}
298
299static int manager_enumerate_linger_users(Manager *m) {
300 _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0);
301 struct dirent *de;
302 int r = 0;
303
304 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 304, __PRETTY_FUNCTION__
); } while (0);
305
306 d = opendir("/var/lib/systemd/linger");
307 if (!d) {
308 if (errno(*__errno_location ()) == ENOENT2)
309 return 0;
310
311 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %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/login/logind.c", 311, __func__, "Failed to open /var/lib/systemd/linger/: %m"
) : -abs(_e); });
312 }
313
314 FOREACH_DIRENT(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 if
(hidden_or_backup_file((de)->d_name)) continue; else {
315 int k;
316
317 if (!dirent_is_file(de))
318 continue;
319
320 k = manager_add_user_by_name(m, de->d_name, NULL((void*)0));
321 if (k < 0) {
322 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name)({ int _level = ((5)), _e = ((k)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/login/logind.c", 322, __func__, "Couldn't add lingering user %s: %m"
, de->d_name) : -abs(_e); });
323 r = k;
324 }
325 }
326
327 return r;
328}
329
330static int manager_enumerate_users(Manager *m) {
331 _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0);
332 struct dirent *de;
333 int r, k;
334
335 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 335, __PRETTY_FUNCTION__
); } while (0);
336
337 /* Add lingering users */
338 r = manager_enumerate_linger_users(m);
339
340 /* Read in user data stored on disk */
341 d = opendir("/run/systemd/users");
342 if (!d) {
343 if (errno(*__errno_location ()) == ENOENT2)
344 return 0;
345
346 return log_error_errno(errno, "Failed to open /run/systemd/users: %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/login/logind.c", 346, __func__, "Failed to open /run/systemd/users: %m"
) : -abs(_e); });
347 }
348
349 FOREACH_DIRENT(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 if
(hidden_or_backup_file((de)->d_name)) continue; else {
350 User *u;
351
352 if (!dirent_is_file(de))
353 continue;
354
355 k = manager_add_user_by_name(m, de->d_name, &u);
356 if (k < 0) {
357 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name)({ int _level = ((3)), _e = ((k)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/login/logind.c", 357, __func__, "Failed to add user by file name %s: %m"
, de->d_name) : -abs(_e); });
358
359 r = k;
360 continue;
361 }
362
363 user_add_to_gc_queue(u);
364
365 k = user_load(u);
366 if (k < 0)
367 r = k;
368 }
369
370 return r;
371}
372
373static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) {
374 _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **parts = NULL((void*)0);
375 _cleanup_free___attribute__((cleanup(freep))) char *id = NULL((void*)0);
376 unsigned int major, minor;
377 int r;
378
379 parts = strv_split(fdname, "-");
380 if (!parts)
41
←
Assuming 'parts' is non-null
→
42
←
Taking false branch
→
381 return -ENOMEM12;
382 if (strv_length(parts) != 5)
43
←
Assuming the condition is false
→
44
←
Taking false branch
→
383 return -EINVAL22;
384
385 if (!streq(parts[0], "session")(strcmp((parts[0]),("session")) == 0))
45
←
Taking false branch
→
386 return -EINVAL22;
387
388 id = strdup(parts[1]);
46
←
Memory is allocated
→
389 if (!id)
47
←
Assuming 'id' is non-null
→
48
←
Taking false branch
→
390 return -ENOMEM12;
391
392 if (!streq(parts[2], "device")(strcmp((parts[2]),("device")) == 0))
49
←
Assuming the condition is false
→
50
←
Taking true branch
→
393 return -EINVAL22;
51
←
Potential leak of memory pointed to by 'id'
394
395 r = safe_atou(parts[3], &major);
396 if (r < 0)
397 return r;
398 r = safe_atou(parts[4], &minor);
399 if (r < 0)
400 return r;
401
402 *dev = makedev(major, minor)gnu_dev_makedev (major, minor);
403 *session_id = TAKE_PTR(id)({ typeof(id) _ptr_ = (id); (id) = ((void*)0); _ptr_; });
404
405 return 0;
406}
407
408static int manager_attach_fds(Manager *m) {
409 _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **fdnames = NULL((void*)0);
410 int n, i, fd;
411
412 /* Upon restart, PID1 will send us back all fds of session devices
413 * that we previously opened. Each file descriptor is associated
414 * with a given session. The session ids are passed through FDNAMES. */
415
416 n = sd_listen_fds_with_names(true1, &fdnames);
417 if (n <= 0)
37
←
Assuming 'n' is > 0
→
38
←
Taking false branch
→
418 return n;
419
420 for (i = 0; i
38.1
'i' is < 'n'
 < n; i++) {
39
←
Loop condition is true. Entering loop body
→
421 _cleanup_free___attribute__((cleanup(freep))) char *id = NULL((void*)0);
422 dev_t dev;
423 struct stat st;
424 SessionDevice *sd;
425 Session *s;
426 int r;
427
428 fd = SD_LISTEN_FDS_START3 + i;
429
430 r = parse_fdname(fdnames[i], &id, &dev);
40
←
Calling 'parse_fdname'
→
431 if (r < 0) {
432 log_debug_errno(r, "Failed to parse fd name %s: %m", fdnames[i])({ 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/login/logind.c", 432, __func__, "Failed to parse fd name %s: %m"
, fdnames[i]) : -abs(_e); });
433 close_nointr(fd);
434 continue;
435 }
436
437 s = hashmap_get(m->sessions, id);
438 if (!s) {
439 /* If the session doesn't exist anymore, the associated session
440 * device attached to this fd doesn't either. Let's simply close
441 * this fd. */
442 log_debug("Failed to attach fd for unknown session: %s", id)({ 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/login/logind.c", 442, __func__, "Failed to attach fd for unknown session: %s"
, id) : -abs(_e); });
443 close_nointr(fd);
444 continue;
445 }
446
447 if (fstat(fd, &st) < 0) {
448 /* The device is allowed to go away at a random point, in which
449 * case fstat failing is expected. */
450 log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id)({ 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/login/logind.c", 450, __func__, "Failed to stat device fd for session %s: %m"
, id) : -abs(_e); });
451 close_nointr(fd);
452 continue;
453 }
454
455 if (!S_ISCHR(st.st_mode)((((st.st_mode)) & 0170000) == (0020000)) || st.st_rdev != dev) {
456 log_debug("Device fd doesn't point to the expected character device node")({ 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/login/logind.c", 456, __func__, "Device fd doesn't point to the expected character device node"
) : -abs(_e); });
457 close_nointr(fd);
458 continue;
459 }
460
461 sd = hashmap_get(s->devices, &dev);
462 if (!sd) {
463 /* Weird, we got an fd for a session device which wasn't
464 * recorded in the session state file... */
465 log_warning("Got fd for missing session device [%u:%u] in session %s",({ 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/login/logind.c", 466, __func__, "Got fd for missing session device [%u:%u] in session %s"
, gnu_dev_major (dev), gnu_dev_minor (dev), s->id) : -abs(
_e); })
466 major(dev), minor(dev), s->id)({ 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/login/logind.c", 466, __func__, "Got fd for missing session device [%u:%u] in session %s"
, gnu_dev_major (dev), gnu_dev_minor (dev), s->id) : -abs(
_e); });
467 close_nointr(fd);
468 continue;
469 }
470
471 log_debug("Attaching fd to session device [%u:%u] for session %s",({ 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/login/logind.c", 472, __func__, "Attaching fd to session device [%u:%u] for session %s"
, gnu_dev_major (dev), gnu_dev_minor (dev), s->id) : -abs(
_e); })
472 major(dev), minor(dev), s->id)({ 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/login/logind.c", 472, __func__, "Attaching fd to session device [%u:%u] for session %s"
, gnu_dev_major (dev), gnu_dev_minor (dev), s->id) : -abs(
_e); });
473
474 session_device_attach_fd(sd, fd, s->was_active);
475 }
476
477 return 0;
478}
479
480static int manager_enumerate_sessions(Manager *m) {
481 _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0);
482 struct dirent *de;
483 int r = 0, k;
484
485 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 485, __PRETTY_FUNCTION__
); } while (0);
26
←
Taking false branch
→
27
←
Loop condition is false. Exiting loop
→
486
487 /* Read in session data stored on disk */
488 d = opendir("/run/systemd/sessions");
489 if (!d) {
28
←
Assuming 'd' is non-null
→
29
←
Taking false branch
→
490 if (errno(*__errno_location ()) == ENOENT2)
491 return 0;
492
493 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %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/login/logind.c", 493, __func__, "Failed to open /run/systemd/sessions: %m"
) : -abs(_e); });
494 }
495
496 FOREACH_DIRENT(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 if
(hidden_or_backup_file((de)->d_name)) continue; else {
30
←
Loop condition is true. Entering loop body
→
31
←
Assuming 'de' is null
→
32
←
Taking true branch
→
33
←
Assuming the condition is false
→
34
←
Taking false branch
→
35
←
 Execution continues on line 524
→
497 struct Session *s;
498
499 if (!dirent_is_file(de))
500 continue;
501
502 if (!session_id_valid(de->d_name)) {
503 log_warning("Invalid session file name '%s', ignoring.", de->d_name)({ 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/login/logind.c", 503, __func__, "Invalid session file name '%s', ignoring."
, de->d_name) : -abs(_e); });
504 r = -EINVAL22;
505 continue;
506 }
507
508 k = manager_add_session(m, de->d_name, &s);
509 if (k < 0) {
510 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name)({ int _level = ((3)), _e = ((k)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/login/logind.c", 510, __func__, "Failed to add session by file name %s: %m"
, de->d_name) : -abs(_e); });
511 r = k;
512 continue;
513 }
514
515 session_add_to_gc_queue(s);
516
517 k = session_load(s);
518 if (k < 0)
519 r = k;
520 }
521
522 /* We might be restarted and PID1 could have sent us back the
523 * session device fds we previously saved. */
524 k = manager_attach_fds(m);
36
←
Calling 'manager_attach_fds'
→
525 if (k < 0)
526 log_warning_errno(k, "Failed to reattach session device fds: %m")({ 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/login/logind.c", 526, __func__, "Failed to reattach session device fds: %m"
) : -abs(_e); });
527
528 return r;
529}
530
531static int manager_enumerate_inhibitors(Manager *m) {
532 _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0);
533 struct dirent *de;
534 int r = 0;
535
536 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 536, __PRETTY_FUNCTION__
); } while (0);
537
538 d = opendir("/run/systemd/inhibit");
539 if (!d) {
540 if (errno(*__errno_location ()) == ENOENT2)
541 return 0;
542
543 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %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/login/logind.c", 543, __func__, "Failed to open /run/systemd/inhibit: %m"
) : -abs(_e); });
544 }
545
546 FOREACH_DIRENT(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 if
(hidden_or_backup_file((de)->d_name)) continue; else {
547 int k;
548 Inhibitor *i;
549
550 if (!dirent_is_file(de))
551 continue;
552
553 k = manager_add_inhibitor(m, de->d_name, &i);
554 if (k < 0) {
555 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name)({ int _level = ((5)), _e = ((k)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/login/logind.c", 555, __func__, "Couldn't add inhibitor %s: %m"
, de->d_name) : -abs(_e); });
556 r = k;
557 continue;
558 }
559
560 k = inhibitor_load(i);
561 if (k < 0)
562 r = k;
563 }
564
565 return r;
566}
567
568static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
569 _cleanup_(udev_device_unrefp)__attribute__((cleanup(udev_device_unrefp))) struct udev_device *d = NULL((void*)0);
570 Manager *m = userdata;
571
572 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 572, __PRETTY_FUNCTION__
); } while (0);
573
574 d = udev_monitor_receive_device(m->udev_seat_monitor);
575 if (!d)
576 return -ENOMEM12;
577
578 manager_process_seat_device(m, d);
579 return 0;
580}
581
582static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
583 _cleanup_(udev_device_unrefp)__attribute__((cleanup(udev_device_unrefp))) struct udev_device *d = NULL((void*)0);
584 Manager *m = userdata;
585
586 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 586, __PRETTY_FUNCTION__
); } while (0);
587
588 d = udev_monitor_receive_device(m->udev_device_monitor);
589 if (!d)
590 return -ENOMEM12;
591
592 manager_process_seat_device(m, d);
593 return 0;
594}
595
596static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
597 _cleanup_(udev_device_unrefp)__attribute__((cleanup(udev_device_unrefp))) struct udev_device *d = NULL((void*)0);
598 Manager *m = userdata;
599 const char *name;
600
601 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 601, __PRETTY_FUNCTION__
); } while (0);
602
603 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
604 if (!d)
605 return -ENOMEM12;
606
607 name = udev_device_get_sysname(d);
608
609 /* Whenever a VCSA device is removed try to reallocate our
610 * VTs, to make sure our auto VTs never go away. */
611
612 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
613 seat_preallocate_vts(m->seat0);
614
615 return 0;
616}
617
618static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
619 _cleanup_(udev_device_unrefp)__attribute__((cleanup(udev_device_unrefp))) struct udev_device *d = NULL((void*)0);
620 Manager *m = userdata;
621
622 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 622, __PRETTY_FUNCTION__
); } while (0);
623
624 d = udev_monitor_receive_device(m->udev_button_monitor);
625 if (!d)
626 return -ENOMEM12;
627
628 manager_process_button_device(m, d);
629 return 0;
630}
631
632static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
633 Manager *m = userdata;
634
635 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 635, __PRETTY_FUNCTION__
); } while (0);
636 assert(m->seat0)do { if ((__builtin_expect(!!(!(m->seat0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m->seat0"), "../src/login/logind.c",
636, __PRETTY_FUNCTION__); } while (0);
637 assert(m->console_active_fd == fd)do { if ((__builtin_expect(!!(!(m->console_active_fd == fd
)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("m->console_active_fd == fd"
), "../src/login/logind.c", 637, __PRETTY_FUNCTION__); } while
(0);
638
639 seat_read_active_vt(m->seat0);
640 return 0;
641}
642
643static int manager_reserve_vt(Manager *m) {
644 _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0);
645
646 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 646, __PRETTY_FUNCTION__
); } while (0);
647
648 if (m->reserve_vt <= 0)
649 return 0;
650
651 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
652 return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/login/logind.c", 652
, __func__);
653
654 m->reserve_vt_fd = open(p, O_RDWR02|O_NOCTTY0400|O_CLOEXEC02000000|O_NONBLOCK04000);
655 if (m->reserve_vt_fd < 0) {
656
657 /* Don't complain on VT-less systems */
658 if (errno(*__errno_location ()) != ENOENT2)
659 log_warning_errno(errno, "Failed to pin reserved VT: %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/login/logind.c", 659, __func__, "Failed to pin reserved VT: %m"
) : -abs(_e); });
660 return -errno(*__errno_location ());
661 }
662
663 return 0;
664}
665
666static int manager_connect_bus(Manager *m) {
667 int r;
668
669 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 669, __PRETTY_FUNCTION__
); } while (0);
670 assert(!m->bus)do { if ((__builtin_expect(!!(!(!m->bus)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("!m->bus"), "../src/login/logind.c", 670
, __PRETTY_FUNCTION__); } while (0);
671
672 r = sd_bus_default_system(&m->bus);
673 if (r < 0)
674 return log_error_errno(r, "Failed to connect to 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/login/logind.c", 674, __func__, "Failed to connect to system bus: %m"
) : -abs(_e); });
675
676 r = sd_bus_add_object_vtable(m->bus, NULL((void*)0), "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
677 if (r < 0)
678 return log_error_errno(r, "Failed to add manager object vtable: %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/login/logind.c", 678, __func__, "Failed to add manager object vtable: %m"
) : -abs(_e); });
679
680 r = sd_bus_add_fallback_vtable(m->bus, NULL((void*)0), "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
681 if (r < 0)
682 return log_error_errno(r, "Failed to add seat object vtable: %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/login/logind.c", 682, __func__, "Failed to add seat object vtable: %m"
) : -abs(_e); });
683
684 r = sd_bus_add_node_enumerator(m->bus, NULL((void*)0), "/org/freedesktop/login1/seat", seat_node_enumerator, m);
685 if (r < 0)
686 return log_error_errno(r, "Failed to add seat enumerator: %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/login/logind.c", 686, __func__, "Failed to add seat enumerator: %m"
) : -abs(_e); });
687
688 r = sd_bus_add_fallback_vtable(m->bus, NULL((void*)0), "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
689 if (r < 0)
690 return log_error_errno(r, "Failed to add session object vtable: %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/login/logind.c", 690, __func__, "Failed to add session object vtable: %m"
) : -abs(_e); });
691
692 r = sd_bus_add_node_enumerator(m->bus, NULL((void*)0), "/org/freedesktop/login1/session", session_node_enumerator, m);
693 if (r < 0)
694 return log_error_errno(r, "Failed to add session enumerator: %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/login/logind.c", 694, __func__, "Failed to add session enumerator: %m"
) : -abs(_e); });
695
696 r = sd_bus_add_fallback_vtable(m->bus, NULL((void*)0), "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
697 if (r < 0)
698 return log_error_errno(r, "Failed to add user object vtable: %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/login/logind.c", 698, __func__, "Failed to add user object vtable: %m"
) : -abs(_e); });
699
700 r = sd_bus_add_node_enumerator(m->bus, NULL((void*)0), "/org/freedesktop/login1/user", user_node_enumerator, m);
701 if (r < 0)
702 return log_error_errno(r, "Failed to add user enumerator: %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/login/logind.c", 702, __func__, "Failed to add user enumerator: %m"
) : -abs(_e); });
703
704 r = sd_bus_match_signal_async(
705 m->bus,
706 NULL((void*)0),
707 "org.freedesktop.systemd1",
708 "/org/freedesktop/systemd1",
709 "org.freedesktop.systemd1.Manager",
710 "JobRemoved",
711 match_job_removed, NULL((void*)0), m);
712 if (r < 0)
713 return log_error_errno(r, "Failed to request match for JobRemoved: %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/login/logind.c", 713, __func__, "Failed to request match for JobRemoved: %m"
) : -abs(_e); });
714
715 r = sd_bus_match_signal_async(
716 m->bus,
717 NULL((void*)0),
718 "org.freedesktop.systemd1",
719 "/org/freedesktop/systemd1",
720 "org.freedesktop.systemd1.Manager",
721 "UnitRemoved",
722 match_unit_removed, NULL((void*)0), m);
723 if (r < 0)
724 return log_error_errno(r, "Failed to request match for UnitRemoved: %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/login/logind.c", 724, __func__, "Failed to request match for UnitRemoved: %m"
) : -abs(_e); });
725
726 r = sd_bus_match_signal_async(
727 m->bus,
728 NULL((void*)0),
729 "org.freedesktop.systemd1",
730 NULL((void*)0),
731 "org.freedesktop.DBus.Properties",
732 "PropertiesChanged",
733 match_properties_changed, NULL((void*)0), m);
734 if (r < 0)
735 return log_error_errno(r, "Failed to request match for PropertiesChanged: %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/login/logind.c", 735, __func__, "Failed to request match for PropertiesChanged: %m"
) : -abs(_e); });
736
737 r = sd_bus_match_signal_async(
738 m->bus,
739 NULL((void*)0),
740 "org.freedesktop.systemd1",
741 "/org/freedesktop/systemd1",
742 "org.freedesktop.systemd1.Manager",
743 "Reloading",
744 match_reloading, NULL((void*)0), m);
745 if (r < 0)
746 return log_error_errno(r, "Failed to request match for Reloading: %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/login/logind.c", 746, __func__, "Failed to request match for Reloading: %m"
) : -abs(_e); });
747
748 r = sd_bus_call_method_async(
749 m->bus,
750 NULL((void*)0),
751 "org.freedesktop.systemd1",
752 "/org/freedesktop/systemd1",
753 "org.freedesktop.systemd1.Manager",
754 "Subscribe",
755 NULL((void*)0), NULL((void*)0),
756 NULL((void*)0));
757 if (r < 0)
758 return log_error_errno(r, "Failed to enable subscription: %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/login/logind.c", 758, __func__, "Failed to enable subscription: %m"
) : -abs(_e); });
759
760 r = sd_bus_request_name_async(m->bus, NULL((void*)0), "org.freedesktop.login1", 0, NULL((void*)0), NULL((void*)0));
761 if (r < 0)
762 return log_error_errno(r, "Failed to request 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/login/logind.c", 762, __func__, "Failed to request name: %m"
) : -abs(_e); });
763
764 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
765 if (r < 0)
766 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/login/logind.c", 766, __func__, "Failed to attach bus to event loop: %m"
) : -abs(_e); });
767
768 return 0;
769}
770
771static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
772 Manager *m = data;
773 Session *active, *iter;
774
775 /*
776 * We got a VT-switch signal and we have to acknowledge it immediately.
777 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
778 * old user-space might run multiple sessions on a single VT, *sigh*.
779 * Therefore, we have to iterate all sessions and find one with a vtfd
780 * on the requested VT.
781 * As only VTs with active controllers have VT_PROCESS set, our current
782 * notion of the active VT might be wrong (for instance if the switch
783 * happens while we setup VT_PROCESS). Therefore, read the current VT
784 * first and then use s->active->vtnr as reference. Note that this is
785 * not racy, as no further VT-switch can happen as long as we're in
786 * synchronous VT_PROCESS mode.
787 */
788
789 assert(m->seat0)do { if ((__builtin_expect(!!(!(m->seat0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m->seat0"), "../src/login/logind.c",
789, __PRETTY_FUNCTION__); } while (0);
790 seat_read_active_vt(m->seat0);
791
792 active = m->seat0->active;
793 if (!active || active->vtnr < 1) {
794 log_warning("Received VT_PROCESS signal without a registered session on that VT.")({ 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/login/logind.c", 794, __func__, "Received VT_PROCESS signal without a registered session on that VT."
) : -abs(_e); });
795 return 0;
796 }
797
798 if (active->vtfd >= 0) {
799 session_leave_vt(active);
800 } else {
801 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions)for ((iter) = (m->seat0->sessions); (iter); (iter) = (iter
)->sessions_by_seat_next) {
802 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
803 session_leave_vt(iter);
804 break;
805 }
806 }
807 }
808
809 return 0;
810}
811
812static int manager_connect_console(Manager *m) {
813 int r;
814
815 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 815, __PRETTY_FUNCTION__
); } while (0);
816 assert(m->console_active_fd < 0)do { if ((__builtin_expect(!!(!(m->console_active_fd < 0
)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("m->console_active_fd < 0"
), "../src/login/logind.c", 816, __PRETTY_FUNCTION__); } while
(0);
817
818 /* On certain architectures (S390 and Xen, and containers),
819 /dev/tty0 does not exist, so don't fail if we can't open
820 it. */
821 if (access("/dev/tty0", F_OK0) < 0)
822 return 0;
823
824 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY00|O_NOCTTY0400|O_CLOEXEC02000000);
825 if (m->console_active_fd < 0) {
826
827 /* On some systems the device node /dev/tty0 may exist
828 * even though /sys/class/tty/tty0 does not. */
829 if (errno(*__errno_location ()) == ENOENT2)
830 return 0;
831
832 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %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/login/logind.c", 832, __func__, "Failed to open /sys/class/tty/tty0/active: %m"
) : -abs(_e); });
833 }
834
835 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
836 if (r < 0) {
837 log_error("Failed to watch foreground console")({ 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/login/logind.c", 837, __func__, "Failed to watch foreground console"
) : -abs(_e); });
838 return r;
839 }
840
841 /*
842 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
843 * as VT-acquire signal. We ignore any acquire-events (yes, we still
844 * have to provide a valid signal-number for it!) and acknowledge all
845 * release events immediately.
846 */
847
848 if (SIGRTMIN(__libc_current_sigrtmin ()) + 1 > SIGRTMAX(__libc_current_sigrtmax ())) {
849 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX)({ 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/login/logind.c", 849, __func__, "Not enough real-time signals available: %u-%u"
, (__libc_current_sigrtmin ()), (__libc_current_sigrtmax ()))
: -abs(_e); });
850 return -EINVAL22;
851 }
852
853 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0)do { if ((__builtin_expect(!!(!(ignore_signals((__libc_current_sigrtmin
()) + 1, -1) >= 0)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("ignore_signals(SIGRTMIN + 1, -1) >= 0"), "../src/login/logind.c"
, 853, __PRETTY_FUNCTION__); } while (0);
854 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0)do { if ((__builtin_expect(!!(!(sigprocmask_many(0, ((void*)0
), (__libc_current_sigrtmin ()), -1) >= 0)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0"
), "../src/login/logind.c", 854, __PRETTY_FUNCTION__); } while
(0);
855
856 r = sd_event_add_signal(m->event, NULL((void*)0), SIGRTMIN(__libc_current_sigrtmin ()), manager_vt_switch, m);
857 if (r < 0)
858 return r;
859
860 return 0;
861}
862
863static int manager_connect_udev(Manager *m) {
864 int r;
865
866 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 866, __PRETTY_FUNCTION__
); } while (0);
867 assert(!m->udev_seat_monitor)do { if ((__builtin_expect(!!(!(!m->udev_seat_monitor)),0)
)) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!m->udev_seat_monitor"
), "../src/login/logind.c", 867, __PRETTY_FUNCTION__); } while
(0);
868 assert(!m->udev_device_monitor)do { if ((__builtin_expect(!!(!(!m->udev_device_monitor)),
0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!m->udev_device_monitor"
), "../src/login/logind.c", 868, __PRETTY_FUNCTION__); } while
(0);
869 assert(!m->udev_vcsa_monitor)do { if ((__builtin_expect(!!(!(!m->udev_vcsa_monitor)),0)
)) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!m->udev_vcsa_monitor"
), "../src/login/logind.c", 869, __PRETTY_FUNCTION__); } while
(0);
870 assert(!m->udev_button_monitor)do { if ((__builtin_expect(!!(!(!m->udev_button_monitor)),
0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!m->udev_button_monitor"
), "../src/login/logind.c", 870, __PRETTY_FUNCTION__); } while
(0);
871
872 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
873 if (!m->udev_seat_monitor)
874 return -ENOMEM12;
875
876 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
877 if (r < 0)
878 return r;
879
880 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
881 if (r < 0)
882 return r;
883
884 r = sd_event_add_io(m->event, &m->udev_seat_event_source, udev_monitor_get_fd(m->udev_seat_monitor), EPOLLINEPOLLIN, manager_dispatch_seat_udev, m);
885 if (r < 0)
886 return r;
887
888 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
889 if (!m->udev_device_monitor)
890 return -ENOMEM12;
891
892 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL((void*)0));
893 if (r < 0)
894 return r;
895
896 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL((void*)0));
897 if (r < 0)
898 return r;
899
900 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL((void*)0));
901 if (r < 0)
902 return r;
903
904 r = udev_monitor_enable_receiving(m->udev_device_monitor);
905 if (r < 0)
906 return r;
907
908 r = sd_event_add_io(m->event, &m->udev_device_event_source, udev_monitor_get_fd(m->udev_device_monitor), EPOLLINEPOLLIN, manager_dispatch_device_udev, m);
909 if (r < 0)
910 return r;
911
912 /* Don't watch keys if nobody cares */
913 if (!manager_all_buttons_ignored(m)) {
914 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
915 if (!m->udev_button_monitor)
916 return -ENOMEM12;
917
918 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
919 if (r < 0)
920 return r;
921
922 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL((void*)0));
923 if (r < 0)
924 return r;
925
926 r = udev_monitor_enable_receiving(m->udev_button_monitor);
927 if (r < 0)
928 return r;
929
930 r = sd_event_add_io(m->event, &m->udev_button_event_source, udev_monitor_get_fd(m->udev_button_monitor), EPOLLINEPOLLIN, manager_dispatch_button_udev, m);
931 if (r < 0)
932 return r;
933 }
934
935 /* Don't bother watching VCSA devices, if nobody cares */
936 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
937
938 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
939 if (!m->udev_vcsa_monitor)
940 return -ENOMEM12;
941
942 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL((void*)0));
943 if (r < 0)
944 return r;
945
946 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
947 if (r < 0)
948 return r;
949
950 r = sd_event_add_io(m->event, &m->udev_vcsa_event_source, udev_monitor_get_fd(m->udev_vcsa_monitor), EPOLLINEPOLLIN, manager_dispatch_vcsa_udev, m);
951 if (r < 0)
952 return r;
953 }
954
955 return 0;
956}
957
958static void manager_gc(Manager *m, bool_Bool drop_not_started) {
959 Seat *seat;
960 Session *session;
961 User *user;
962
963 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 963, __PRETTY_FUNCTION__
); } while (0);
964
965 while ((seat = m->seat_gc_queue)) {
966 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat)do { typeof(*(m->seat_gc_queue)) **_head = &(m->seat_gc_queue
), *_item = (seat); do { if ((__builtin_expect(!!(!(_item)),0
))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("_item"), "../src/login/logind.c"
, 966, __PRETTY_FUNCTION__); } while (0); if (_item->gc_queue_next
) _item->gc_queue_next->gc_queue_prev = _item->gc_queue_prev
; if (_item->gc_queue_prev) _item->gc_queue_prev->gc_queue_next
= _item->gc_queue_next; else { do { if ((__builtin_expect
(!!(!(*_head == _item)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("*_head == _item"), "../src/login/logind.c", 966, __PRETTY_FUNCTION__
); } while (0); *_head = _item->gc_queue_next; } _item->
gc_queue_next = _item->gc_queue_prev = ((void*)0); } while
(0);
967 seat->in_gc_queue = false0;
968
969 if (seat_may_gc(seat, drop_not_started)) {
970 seat_stop(seat, false0);
971 seat_free(seat);
972 }
973 }
974
975 while ((session = m->session_gc_queue)) {
976 LIST_REMOVE(gc_queue, m->session_gc_queue, session)do { typeof(*(m->session_gc_queue)) **_head = &(m->
session_gc_queue), *_item = (session); do { if ((__builtin_expect
(!!(!(_item)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD,
("_item"), "../src/login/logind.c", 976, __PRETTY_FUNCTION__
); } while (0); if (_item->gc_queue_next) _item->gc_queue_next
->gc_queue_prev = _item->gc_queue_prev; if (_item->gc_queue_prev
) _item->gc_queue_prev->gc_queue_next = _item->gc_queue_next
; else { do { if ((__builtin_expect(!!(!(*_head == _item)),0)
)) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("*_head == _item"
), "../src/login/logind.c", 976, __PRETTY_FUNCTION__); } while
(0); *_head = _item->gc_queue_next; } _item->gc_queue_next
= _item->gc_queue_prev = ((void*)0); } while (0);
977 session->in_gc_queue = false0;
978
979 /* First, if we are not closing yet, initiate stopping */
980 if (session_may_gc(session, drop_not_started) &&
981 session_get_state(session) != SESSION_CLOSING)
982 session_stop(session, false0);
983
984 /* Normally, this should make the session referenced
985 * again, if it doesn't then let's get rid of it
986 * immediately */
987 if (session_may_gc(session, drop_not_started)) {
988 session_finalize(session);
989 session_free(session);
990 }
991 }
992
993 while ((user = m->user_gc_queue)) {
994 LIST_REMOVE(gc_queue, m->user_gc_queue, user)do { typeof(*(m->user_gc_queue)) **_head = &(m->user_gc_queue
), *_item = (user); do { if ((__builtin_expect(!!(!(_item)),0
))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("_item"), "../src/login/logind.c"
, 994, __PRETTY_FUNCTION__); } while (0); if (_item->gc_queue_next
) _item->gc_queue_next->gc_queue_prev = _item->gc_queue_prev
; if (_item->gc_queue_prev) _item->gc_queue_prev->gc_queue_next
= _item->gc_queue_next; else { do { if ((__builtin_expect
(!!(!(*_head == _item)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("*_head == _item"), "../src/login/logind.c", 994, __PRETTY_FUNCTION__
); } while (0); *_head = _item->gc_queue_next; } _item->
gc_queue_next = _item->gc_queue_prev = ((void*)0); } while
(0);
995 user->in_gc_queue = false0;
996
997 /* First step: queue stop jobs */
998 if (user_may_gc(user, drop_not_started))
999 user_stop(user, false0);
1000
1001 /* Second step: finalize user */
1002 if (user_may_gc(user, drop_not_started)) {
1003 user_finalize(user);
1004 user_free(user);
1005 }
1006 }
1007}
1008
1009static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1010 Manager *m = userdata;
1011 struct dual_timestamp since;
1012 usec_t n, elapse;
1013 int r;
1014
1015 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 1015, __PRETTY_FUNCTION__
); } while (0);
1016
1017 if (m->idle_action == HANDLE_IGNORE ||
1018 m->idle_action_usec <= 0)
1019 return 0;
1020
1021 n = now(CLOCK_MONOTONIC1);
1022
1023 r = manager_get_idle_hint(m, &since);
1024 if (r <= 0)
1025 /* Not idle. Let's check if after a timeout it might be idle then. */
1026 elapse = n + m->idle_action_usec;
1027 else {
1028 /* Idle! Let's see if it's time to do something, or if
1029 * we shall sleep for longer. */
1030
1031 if (n >= since.monotonic + m->idle_action_usec &&
1032 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1033 log_info("System idle. Taking action.")({ 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/login/logind.c", 1033, __func__, "System idle. Taking action."
) : -abs(_e); });
1034
1035 manager_handle_action(m, 0, m->idle_action, false0, false0);
1036 m->idle_action_not_before_usec = n;
1037 }
1038
1039 elapse = MAX(since.monotonic, m->idle_action_not_before_usec)__extension__ ({ const typeof((since.monotonic)) __unique_prefix_A20
= ((since.monotonic)); const typeof((m->idle_action_not_before_usec
)) __unique_prefix_B21 = ((m->idle_action_not_before_usec)
); __unique_prefix_A20 > __unique_prefix_B21 ? __unique_prefix_A20
: __unique_prefix_B21; }) + m->idle_action_usec;
1040 }
1041
1042 if (!m->idle_action_event_source) {
1043
1044 r = sd_event_add_time(
1045 m->event,
1046 &m->idle_action_event_source,
1047 CLOCK_MONOTONIC1,
1048 elapse, USEC_PER_SEC((usec_t) 1000000ULL)*30,
1049 manager_dispatch_idle_action, m);
1050 if (r < 0)
1051 return log_error_errno(r, "Failed to add idle 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/login/logind.c", 1051, __func__, "Failed to add idle event source: %m"
) : -abs(_e); });
1052
1053 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1054 if (r < 0)
1055 return log_error_errno(r, "Failed to set idle event source priority: %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/login/logind.c", 1055, __func__, "Failed to set idle event source priority: %m"
) : -abs(_e); });
1056 } else {
1057 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1058 if (r < 0)
1059 return log_error_errno(r, "Failed to set idle event timer: %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/login/logind.c", 1059, __func__, "Failed to set idle event timer: %m"
) : -abs(_e); });
1060
1061 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1062 if (r < 0)
1063 return log_error_errno(r, "Failed to enable idle event timer: %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/login/logind.c", 1063, __func__, "Failed to enable idle event timer: %m"
) : -abs(_e); });
1064 }
1065
1066 return 0;
1067}
1068
1069static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1070 Manager *m = userdata;
1071 int r;
1072
1073 manager_reset_config(m);
1074 r = manager_parse_config_file(m);
1075 if (r < 0)
1076 log_warning_errno(r, "Failed to parse config file, using defaults: %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/login/logind.c", 1076, __func__, "Failed to parse config file, using defaults: %m"
) : -abs(_e); });
1077 else
1078 log_info("Config file reloaded.")({ 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/login/logind.c", 1078, __func__, "Config file reloaded."
) : -abs(_e); });
1079
1080 return 0;
1081}
1082
1083static int manager_startup(Manager *m) {
1084 int r;
1085 Seat *seat;
1086 Session *session;
1087 User *user;
1088 Button *button;
1089 Inhibitor *inhibitor;
1090 Iterator i;
1091
1092 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 1092, __PRETTY_FUNCTION__
); } while (0);
10
←
Taking false branch
→
11
←
Loop condition is false. Exiting loop
→
1093
1094 r = sd_event_add_signal(m->event, NULL((void*)0), SIGHUP1, manager_dispatch_reload_signal, m);
1095 if (r < 0)
12
←
Assuming 'r' is >= 0
→
13
←
Taking false branch
→
1096 return log_error_errno(r, "Failed to register SIGHUP handler: %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/login/logind.c", 1096, __func__, "Failed to register SIGHUP handler: %m"
) : -abs(_e); });
1097
1098 /* Connect to console */
1099 r = manager_connect_console(m);
1100 if (r
13.1
'r' is >= 0
 < 0)
14
←
Taking false branch
→
1101 return r;
1102
1103 /* Connect to udev */
1104 r = manager_connect_udev(m);
1105 if (r
14.1
'r' is >= 0
 < 0)
15
←
Taking false branch
→
1106 return log_error_errno(r, "Failed to create udev watchers: %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/login/logind.c", 1106, __func__, "Failed to create udev watchers: %m"
) : -abs(_e); });
1107
1108 /* Connect to the bus */
1109 r = manager_connect_bus(m);
1110 if (r < 0)
16
←
Assuming 'r' is >= 0
→
17
←
Taking false branch
→
1111 return r;
1112
1113 /* Instantiate magic seat 0 */
1114 r = manager_add_seat(m, "seat0", &m->seat0);
1115 if (r < 0)
18
←
Assuming 'r' is >= 0
→
19
←
Taking false branch
→
1116 return log_error_errno(r, "Failed to add seat0: %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/login/logind.c", 1116, __func__, "Failed to add seat0: %m"
) : -abs(_e); });
1117
1118 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1119 if (r < 0)
20
←
Assuming 'r' is >= 0
→
21
←
Taking false branch
→
1120 log_warning_errno(r, "Failed to set up lid switch ignore event source: %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/login/logind.c", 1120, __func__, "Failed to set up lid switch ignore event source: %m"
) : -abs(_e); });
1121
1122 /* Deserialize state */
1123 r = manager_enumerate_devices(m);
1124 if (r
21.1
'r' is >= 0
 < 0)
22
←
Taking false branch
→
1125 log_warning_errno(r, "Device enumeration failed: %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/login/logind.c", 1125, __func__, "Device enumeration failed: %m"
) : -abs(_e); });
1126
1127 r = manager_enumerate_seats(m);
1128 if (r
22.1
'r' is >= 0
 < 0)
23
←
Taking false branch
→
1129 log_warning_errno(r, "Seat enumeration failed: %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/login/logind.c", 1129, __func__, "Seat enumeration failed: %m"
) : -abs(_e); });
1130
1131 r = manager_enumerate_users(m);
1132 if (r
23.1
'r' is >= 0
 < 0)
24
←
Taking false branch
→
1133 log_warning_errno(r, "User enumeration failed: %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/login/logind.c", 1133, __func__, "User enumeration failed: %m"
) : -abs(_e); });
1134
1135 r = manager_enumerate_sessions(m);
25
←
Calling 'manager_enumerate_sessions'
→
1136 if (r < 0)
1137 log_warning_errno(r, "Session enumeration failed: %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/login/logind.c", 1137, __func__, "Session enumeration failed: %m"
) : -abs(_e); });
1138
1139 r = manager_enumerate_inhibitors(m);
1140 if (r < 0)
1141 log_warning_errno(r, "Inhibitor enumeration failed: %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/login/logind.c", 1141, __func__, "Inhibitor enumeration failed: %m"
) : -abs(_e); });
1142
1143 r = manager_enumerate_buttons(m);
1144 if (r < 0)
1145 log_warning_errno(r, "Button enumeration failed: %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/login/logind.c", 1145, __func__, "Button enumeration failed: %m"
) : -abs(_e); });
1146
1147 /* Remove stale objects before we start them */
1148 manager_gc(m, false0);
1149
1150 /* Reserve the special reserved VT */
1151 manager_reserve_vt(m);
1152
1153 /* And start everything */
1154 HASHMAP_FOREACH(seat, m->seats, i)for ((i) = ((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .
next_key = ((void*)0) }); hashmap_iterate((m->seats), &
(i), (void**)&(seat), ((void*)0)); )
1155 seat_start(seat);
1156
1157 HASHMAP_FOREACH(user, m->users, i)for ((i) = ((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .
next_key = ((void*)0) }); hashmap_iterate((m->users), &
(i), (void**)&(user), ((void*)0)); )
1158 user_start(user);
1159
1160 HASHMAP_FOREACH(session, m->sessions, i)for ((i) = ((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .
next_key = ((void*)0) }); hashmap_iterate((m->sessions), &
(i), (void**)&(session), ((void*)0)); )
1161 session_start(session, NULL((void*)0));
1162
1163 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)for ((i) = ((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .
next_key = ((void*)0) }); hashmap_iterate((m->inhibitors),
&(i), (void**)&(inhibitor), ((void*)0)); )
1164 inhibitor_start(inhibitor);
1165
1166 HASHMAP_FOREACH(button, m->buttons, i)for ((i) = ((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .
next_key = ((void*)0) }); hashmap_iterate((m->buttons), &
(i), (void**)&(button), ((void*)0)); )
1167 button_check_switches(button);
1168
1169 manager_dispatch_idle_action(NULL((void*)0), 0, m);
1170
1171 return 0;
1172}
1173
1174static int manager_run(Manager *m) {
1175 int r;
1176
1177 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/login/logind.c", 1177, __PRETTY_FUNCTION__
); } while (0);
1178
1179 for (;;) {
1180 r = sd_event_get_state(m->event);
1181 if (r < 0)
1182 return r;
1183 if (r == SD_EVENT_FINISHED)
1184 return 0;
1185
1186 manager_gc(m, true1);
1187
1188 r = manager_dispatch_delayed(m, false0);
1189 if (r < 0)
1190 return r;
1191 if (r > 0)
1192 continue;
1193
1194 r = sd_event_run(m->event, (uint64_t) -1);
1195 if (r < 0)
1196 return r;
1197 }
1198}
1199
1200int main(int argc, char *argv[]) {
1201 _cleanup_(manager_unrefp)__attribute__((cleanup(manager_unrefp))) Manager *m = NULL((void*)0);
1202 int r;
1203
1204 log_set_target(LOG_TARGET_AUTO);
1205 log_set_facility(LOG_AUTH(4<<3));
1206 log_parse_environment()log_parse_environment_realm(LOG_REALM_SYSTEMD);
1207 log_open();
1208
1209 umask(0022);
1210
1211 if (argc != 1) {
1
Assuming 'argc' is equal to 1
→
2
←
Taking false branch
→
1212 log_error("This program takes no arguments.")({ 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/login/logind.c", 1212, __func__, "This program takes no arguments."
) : -abs(_e); });
1213 r = -EINVAL22;
1214 goto finish;
1215 }
1216
1217 r = mac_selinux_init();
1218 if (r < 0) {
3
←
Assuming 'r' is >= 0
→
4
←
Taking false branch
→
1219 log_error_errno(r, "Could not initialize labelling: %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/login/logind.c", 1219, __func__, "Could not initialize labelling: %m"
) : -abs(_e); });
1220 goto finish;
1221 }
1222
1223 /* Always create the directories people can create inotify watches in. Note that some applications might check
1224 * for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
1225 * sure these directories are created early on and unconditionally. */
1226 (void) mkdir_label("/run/systemd/seats", 0755);
1227 (void) mkdir_label("/run/systemd/users", 0755);
1228 (void) mkdir_label("/run/systemd/sessions", 0755);
1229
1230 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, -1) >= 0)do { if ((__builtin_expect(!!(!(sigprocmask_many(0, ((void*)0
), 1, 15, 2, -1) >= 0)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, -1) >= 0"
), "../src/login/logind.c", 1230, __PRETTY_FUNCTION__); } while
(0);
5
←
Assuming the condition is true
→
6
←
Taking false branch
→
7
←
Loop condition is false. Exiting loop
→
1231
1232 r = manager_new(&m);
1233 if (r
7.1
'r' is >= 0
 < 0) {
8
←
Taking false branch
→
1234 log_error_errno(r, "Failed to allocate manager object: %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/login/logind.c", 1234, __func__, "Failed to allocate manager object: %m"
) : -abs(_e); });
1235 goto finish;
1236 }
1237
1238 (void) manager_parse_config_file(m);
1239
1240 r = manager_startup(m);
9
←
Calling 'manager_startup'
→
1241 if (r < 0) {
1242 log_error_errno(r, "Failed to fully start up daemon: %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/login/logind.c", 1242, __func__, "Failed to fully start up daemon: %m"
) : -abs(_e); });
1243 goto finish;
1244 }
1245
1246 log_debug("systemd-logind running as pid "PID_FMT, getpid_cached())({ 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/login/logind.c", 1246, __func__, "systemd-logind running as pid "
"%" "i", getpid_cached()) : -abs(_e); });
1247
1248 (void) sd_notify(false0,
1249 "READY=1\n"
1250 "STATUS=Processing requests...");
1251
1252 r = manager_run(m);
1253
1254 log_debug("systemd-logind stopped as pid "PID_FMT, getpid_cached())({ 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/login/logind.c", 1254, __func__, "systemd-logind stopped as pid "
"%" "i", getpid_cached()) : -abs(_e); });
1255
1256 (void) sd_notify(false0,
1257 "STOPPING=1\n"
1258 "STATUS=Shutting down...");
1259
1260finish:
1261 return r < 0 ? EXIT_FAILURE1 : EXIT_SUCCESS0;
1262}