D-Bus 1.10.18

dbus-sysdeps-util-unix.c
1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-sysdeps-util-unix.c Would be in dbus-sysdeps-unix.c, but not used in libdbus
3 *
4 * Copyright (C) 2002, 2003, 2004, 2005 Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
6 *
7 * Licensed under the Academic Free License version 2.1
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 */
24
25 #include <config.h>
26 #include "dbus-sysdeps.h"
27 #include "dbus-sysdeps-unix.h"
28 #include "dbus-internals.h"
29 #include "dbus-pipe.h"
30 #include "dbus-protocol.h"
31 #include "dbus-string.h"
32 #define DBUS_USERDB_INCLUDES_PRIVATE 1
33 #include "dbus-userdb.h"
34 #include "dbus-test.h"
35
36 #include <sys/types.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <signal.h>
40 #include <unistd.h>
41 #include <stdio.h>
42 #include <errno.h>
43 #include <fcntl.h>
44 #include <sys/stat.h>
45 #ifdef HAVE_SYS_RESOURCE_H
46 #include <sys/resource.h>
47 #endif
48 #include <grp.h>
49 #include <sys/socket.h>
50 #include <dirent.h>
51 #include <sys/un.h>
52
53 #ifdef HAVE_SYSLOG_H
54 #include <syslog.h>
55 #endif
56
57 #ifdef HAVE_SYS_SYSLIMITS_H
58 #include <sys/syslimits.h>
59 #endif
60
61 #ifdef HAVE_SYSTEMD
62 #include <systemd/sd-daemon.h>
63 #endif
64
65 #ifndef O_BINARY
66 #define O_BINARY 0
67 #endif
68
84 dbus_bool_t
85 _dbus_become_daemon (const DBusString *pidfile,
86 DBusPipe *print_pid_pipe,
87 DBusError *error,
88 dbus_bool_t keep_umask)
89 {
90 const char *s;
91 pid_t child_pid;
92 int dev_null_fd;
93
94 _dbus_verbose ("Becoming a daemon...\n");
95
96 _dbus_verbose ("chdir to /\n");
97 if (chdir ("/") < 0)
98 {
99 dbus_set_error (error, DBUS_ERROR_FAILED,
100 "Could not chdir() to root directory");
101 return FALSE;
102 }
103
104 _dbus_verbose ("forking...\n");
105 switch ((child_pid = fork ()))
106 {
107 case -1:
108 _dbus_verbose ("fork failed\n");
109 dbus_set_error (error, _dbus_error_from_errno (errno),
110 "Failed to fork daemon: %s", _dbus_strerror (errno));
111 return FALSE;
112 break;
113
114 case 0:
115 _dbus_verbose ("in child, closing std file descriptors\n");
116
117 /* silently ignore failures here, if someone
118 * doesn't have /dev/null we may as well try
119 * to continue anyhow
120 */
121
122 dev_null_fd = open ("/dev/null", O_RDWR);
123 if (dev_null_fd >= 0)
124 {
125 dup2 (dev_null_fd, 0);
126 dup2 (dev_null_fd, 1);
127
128 s = _dbus_getenv ("DBUS_DEBUG_OUTPUT");
129 if (s == NULL || *s == '\0')
130 dup2 (dev_null_fd, 2);
131 else
132 _dbus_verbose ("keeping stderr open due to DBUS_DEBUG_OUTPUT\n");
133 close (dev_null_fd);
134 }
135
136 if (!keep_umask)
137 {
138 /* Get a predictable umask */
139 _dbus_verbose ("setting umask\n");
140 umask (022);
141 }
142
143 _dbus_verbose ("calling setsid()\n");
144 if (setsid () == -1)
145 _dbus_assert_not_reached ("setsid() failed");
146
147 break;
148
149 default:
150 if (!_dbus_write_pid_to_file_and_pipe (pidfile, print_pid_pipe,
151 child_pid, error))
152 {
153 _dbus_verbose ("pid file or pipe write failed: %s\n",
154 error->message);
155 kill (child_pid, SIGTERM);
156 return FALSE;
157 }
158
159 _dbus_verbose ("parent exiting\n");
160 _exit (0);
161 break;
162 }
163
164 return TRUE;
165 }
166
167
176 static dbus_bool_t
177 _dbus_write_pid_file (const DBusString *filename,
178 unsigned long pid,
179 DBusError *error)
180 {
181 const char *cfilename;
182 int fd;
183 FILE *f;
184
185 cfilename = _dbus_string_get_const_data (filename);
186
187 fd = open (cfilename, O_WRONLY|O_CREAT|O_EXCL|O_BINARY, 0644);
188
189 if (fd < 0)
190 {
191 dbus_set_error (error, _dbus_error_from_errno (errno),
192 "Failed to open \"%s\": %s", cfilename,
193 _dbus_strerror (errno));
194 return FALSE;
195 }
196
197 if ((f = fdopen (fd, "w")) == NULL)
198 {
199 dbus_set_error (error, _dbus_error_from_errno (errno),
200 "Failed to fdopen fd %d: %s", fd, _dbus_strerror (errno));
201 _dbus_close (fd, NULL);
202 return FALSE;
203 }
204
205 if (fprintf (f, "%lu\n", pid) < 0)
206 {
207 dbus_set_error (error, _dbus_error_from_errno (errno),
208 "Failed to write to \"%s\": %s", cfilename,
209 _dbus_strerror (errno));
210
211 fclose (f);
212 return FALSE;
213 }
214
215 if (fclose (f) == EOF)
216 {
217 dbus_set_error (error, _dbus_error_from_errno (errno),
218 "Failed to close \"%s\": %s", cfilename,
219 _dbus_strerror (errno));
220 return FALSE;
221 }
222
223 return TRUE;
224 }
225
237 dbus_bool_t
238 _dbus_write_pid_to_file_and_pipe (const DBusString *pidfile,
239 DBusPipe *print_pid_pipe,
240 dbus_pid_t pid_to_write,
241 DBusError *error)
242 {
243 if (pidfile)
244 {
245 _dbus_verbose ("writing pid file %s\n", _dbus_string_get_const_data (pidfile));
246 if (!_dbus_write_pid_file (pidfile,
247 pid_to_write,
248 error))
249 {
250 _dbus_verbose ("pid file write failed\n");
251 _DBUS_ASSERT_ERROR_IS_SET(error);
252 return FALSE;
253 }
254 }
255 else
256 {
257 _dbus_verbose ("No pid file requested\n");
258 }
259
260 if (print_pid_pipe != NULL && _dbus_pipe_is_valid (print_pid_pipe))
261 {
262 DBusString pid;
263 int bytes;
264
265 _dbus_verbose ("writing our pid to pipe %d\n",
266 print_pid_pipe->fd);
267
268 if (!_dbus_string_init (&pid))
269 {
270 _DBUS_SET_OOM (error);
271 return FALSE;
272 }
273
274 if (!_dbus_string_append_int (&pid, pid_to_write) ||
275 !_dbus_string_append (&pid, "\n"))
276 {
277 _dbus_string_free (&pid);
278 _DBUS_SET_OOM (error);
279 return FALSE;
280 }
281
282 bytes = _dbus_string_get_length (&pid);
283 if (_dbus_pipe_write (print_pid_pipe, &pid, 0, bytes, error) != bytes)
284 {
285 /* _dbus_pipe_write sets error only on failure, not short write */
286 if (error != NULL && !dbus_error_is_set(error))
287 {
288 dbus_set_error (error, DBUS_ERROR_FAILED,
289 "Printing message bus PID: did not write enough bytes\n");
290 }
291 _dbus_string_free (&pid);
292 return FALSE;
293 }
294
295 _dbus_string_free (&pid);
296 }
297 else
298 {
299 _dbus_verbose ("No pid pipe to write to\n");
300 }
301
302 return TRUE;
303 }
304
311 dbus_bool_t
312 _dbus_verify_daemon_user (const char *user)
313 {
314 DBusString u;
315
316 _dbus_string_init_const (&u, user);
317
318 return _dbus_get_user_id_and_primary_group (&u, NULL, NULL);
319 }
320
321
322 /* The HAVE_LIBAUDIT case lives in selinux.c */
323 #ifndef HAVE_LIBAUDIT
324
331 dbus_bool_t
332 _dbus_change_to_daemon_user (const char *user,
333 DBusError *error)
334 {
335 dbus_uid_t uid;
336 dbus_gid_t gid;
337 DBusString u;
338
339 _dbus_string_init_const (&u, user);
340
341 if (!_dbus_get_user_id_and_primary_group (&u, &uid, &gid))
342 {
343 dbus_set_error (error, DBUS_ERROR_FAILED,
344 "User '%s' does not appear to exist?",
345 user);
346 return FALSE;
347 }
348
349 /* setgroups() only works if we are a privileged process,
350 * so we don't return error on failure; the only possible
351 * failure is that we don't have perms to do it.
352 *
353 * not sure this is right, maybe if setuid()
354 * is going to work then setgroups() should also work.
355 */
356 if (setgroups (0, NULL) < 0)
357 _dbus_warn ("Failed to drop supplementary groups: %s\n",
358 _dbus_strerror (errno));
359
360 /* Set GID first, or the setuid may remove our permission
361 * to change the GID
362 */
363 if (setgid (gid) < 0)
364 {
365 dbus_set_error (error, _dbus_error_from_errno (errno),
366 "Failed to set GID to %lu: %s", gid,
367 _dbus_strerror (errno));
368 return FALSE;
369 }
370
371 if (setuid (uid) < 0)
372 {
373 dbus_set_error (error, _dbus_error_from_errno (errno),
374 "Failed to set UID to %lu: %s", uid,
375 _dbus_strerror (errno));
376 return FALSE;
377 }
378
379 return TRUE;
380 }
381 #endif /* !HAVE_LIBAUDIT */
382
383 #ifdef HAVE_SETRLIMIT
384
385 /* We assume that if we have setrlimit, we also have getrlimit and
386 * struct rlimit.
387 */
388
389 struct DBusRLimit {
390 struct rlimit lim;
391 };
392
393 DBusRLimit *
394 _dbus_rlimit_save_fd_limit (DBusError *error)
395 {
396 DBusRLimit *self;
397
398 self = dbus_new0 (DBusRLimit, 1);
399
400 if (self == NULL)
401 {
402 _DBUS_SET_OOM (error);
403 return NULL;
404 }
405
406 if (getrlimit (RLIMIT_NOFILE, &self->lim) < 0)
407 {
408 dbus_set_error (error, _dbus_error_from_errno (errno),
409 "Failed to get fd limit: %s", _dbus_strerror (errno));
410 dbus_free (self);
411 return NULL;
412 }
413
414 return self;
415 }
416
417 dbus_bool_t
418 _dbus_rlimit_raise_fd_limit_if_privileged (unsigned int desired,
419 DBusError *error)
420 {
421 struct rlimit lim;
422
423 /* No point to doing this practically speaking
424 * if we're not uid 0. We expect the system
425 * bus to use this before we change UID, and
426 * the session bus takes the Linux default,
427 * currently 1024 for cur and 4096 for max.
428 */
429 if (getuid () != 0)
430 {
431 /* not an error, we're probably the session bus */
432 return TRUE;
433 }
434
435 if (getrlimit (RLIMIT_NOFILE, &lim) < 0)
436 {
437 dbus_set_error (error, _dbus_error_from_errno (errno),
438 "Failed to get fd limit: %s", _dbus_strerror (errno));
439 return FALSE;
440 }
441
442 if (lim.rlim_cur == RLIM_INFINITY || lim.rlim_cur >= desired)
443 {
444 /* not an error, everything is fine */
445 return TRUE;
446 }
447
448 /* Ignore "maximum limit", assume we have the "superuser"
449 * privileges. On Linux this is CAP_SYS_RESOURCE.
450 */
451 lim.rlim_cur = lim.rlim_max = desired;
452
453 if (setrlimit (RLIMIT_NOFILE, &lim) < 0)
454 {
455 dbus_set_error (error, _dbus_error_from_errno (errno),
456 "Failed to set fd limit to %u: %s",
457 desired, _dbus_strerror (errno));
458 return FALSE;
459 }
460
461 return TRUE;
462 }
463
464 dbus_bool_t
465 _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
466 DBusError *error)
467 {
468 if (setrlimit (RLIMIT_NOFILE, &saved->lim) < 0)
469 {
470 dbus_set_error (error, _dbus_error_from_errno (errno),
471 "Failed to restore old fd limit: %s",
472 _dbus_strerror (errno));
473 return FALSE;
474 }
475
476 return TRUE;
477 }
478
479 #else /* !HAVE_SETRLIMIT */
480
481 static void
482 fd_limit_not_supported (DBusError *error)
483 {
484 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED,
485 "cannot change fd limit on this platform");
486 }
487
488 DBusRLimit *
489 _dbus_rlimit_save_fd_limit (DBusError *error)
490 {
491 fd_limit_not_supported (error);
492 return NULL;
493 }
494
495 dbus_bool_t
496 _dbus_rlimit_raise_fd_limit_if_privileged (unsigned int desired,
497 DBusError *error)
498 {
499 fd_limit_not_supported (error);
500 return FALSE;
501 }
502
503 dbus_bool_t
504 _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
505 DBusError *error)
506 {
507 fd_limit_not_supported (error);
508 return FALSE;
509 }
510
511 #endif
512
513 void
514 _dbus_rlimit_free (DBusRLimit *lim)
515 {
516 dbus_free (lim);
517 }
518
519 void
520 _dbus_init_system_log (dbus_bool_t is_daemon)
521 {
522 #ifdef HAVE_SYSLOG_H
523 int logopts = LOG_PID;
524
525 #if HAVE_DECL_LOG_PERROR
526 #ifdef HAVE_SYSTEMD
527 if (!is_daemon || sd_booted () <= 0)
528 #endif
529 logopts |= LOG_PERROR;
530 #endif
531
532 openlog ("dbus", logopts, LOG_DAEMON);
533 #endif
534 }
535
542 void
543 _dbus_system_log (DBusSystemLogSeverity severity, const char *msg, ...)
544 {
545 va_list args;
546
547 va_start (args, msg);
548
549 _dbus_system_logv (severity, msg, args);
550
551 va_end (args);
552 }
553
564 void
565 _dbus_system_logv (DBusSystemLogSeverity severity, const char *msg, va_list args)
566 {
567 va_list tmp;
568 #ifdef HAVE_SYSLOG_H
569 int flags;
570 switch (severity)
571 {
572 case DBUS_SYSTEM_LOG_INFO:
573 flags = LOG_DAEMON | LOG_NOTICE;
574 break;
575 case DBUS_SYSTEM_LOG_WARNING:
576 flags = LOG_DAEMON | LOG_WARNING;
577 break;
578 case DBUS_SYSTEM_LOG_SECURITY:
579 flags = LOG_AUTH | LOG_NOTICE;
580 break;
581 case DBUS_SYSTEM_LOG_FATAL:
582 flags = LOG_DAEMON|LOG_CRIT;
583 break;
584 default:
585 return;
586 }
587
588 DBUS_VA_COPY (tmp, args);
589 vsyslog (flags, msg, tmp);
590 va_end (tmp);
591 #endif
592
593 #if !defined(HAVE_SYSLOG_H) || !HAVE_DECL_LOG_PERROR
594 {
595 /* vsyslog() won't write to stderr, so we'd better do it */
596 DBUS_VA_COPY (tmp, args);
597 fprintf (stderr, "dbus[" DBUS_PID_FORMAT "]: ", _dbus_getpid ());
598 vfprintf (stderr, msg, tmp);
599 fputc ('\n', stderr);
600 va_end (tmp);
601 }
602 #endif
603
604 if (severity == DBUS_SYSTEM_LOG_FATAL)
605 exit (1);
606 }
607
613 void
614 _dbus_set_signal_handler (int sig,
615 DBusSignalHandler handler)
616 {
617 struct sigaction act;
618 sigset_t empty_mask;
619
620 sigemptyset (&empty_mask);
621 act.sa_handler = handler;
622 act.sa_mask = empty_mask;
623 act.sa_flags = 0;
624 sigaction (sig, &act, NULL);
625 }
626
632 dbus_bool_t
633 _dbus_file_exists (const char *file)
634 {
635 return (access (file, F_OK) == 0);
636 }
637
644 dbus_bool_t
645 _dbus_user_at_console (const char *username,
646 DBusError *error)
647 {
648
649 DBusString u, f;
650 dbus_bool_t result;
651
652 result = FALSE;
653 if (!_dbus_string_init (&f))
654 {
655 _DBUS_SET_OOM (error);
656 return FALSE;
657 }
658
659 if (!_dbus_string_append (&f, DBUS_CONSOLE_AUTH_DIR))
660 {
661 _DBUS_SET_OOM (error);
662 goto out;
663 }
664
665 _dbus_string_init_const (&u, username);
666
667 if (!_dbus_concat_dir_and_file (&f, &u))
668 {
669 _DBUS_SET_OOM (error);
670 goto out;
671 }
672
673 result = _dbus_file_exists (_dbus_string_get_const_data (&f));
674
675 out:
676 _dbus_string_free (&f);
677
678 return result;
679 }
680
681
688 dbus_bool_t
689 _dbus_path_is_absolute (const DBusString *filename)
690 {
691 if (_dbus_string_get_length (filename) > 0)
692 return _dbus_string_get_byte (filename, 0) == '/';
693 else
694 return FALSE;
695 }
696
705 dbus_bool_t
706 _dbus_stat (const DBusString *filename,
707 DBusStat *statbuf,
708 DBusError *error)
709 {
710 const char *filename_c;
711 struct stat sb;
712
713 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
714
715 filename_c = _dbus_string_get_const_data (filename);
716
717 if (stat (filename_c, &sb) < 0)
718 {
719 dbus_set_error (error, _dbus_error_from_errno (errno),
720 "%s", _dbus_strerror (errno));
721 return FALSE;
722 }
723
724 statbuf->mode = sb.st_mode;
725 statbuf->nlink = sb.st_nlink;
726 statbuf->uid = sb.st_uid;
727 statbuf->gid = sb.st_gid;
728 statbuf->size = sb.st_size;
729 statbuf->atime = sb.st_atime;
730 statbuf->mtime = sb.st_mtime;
731 statbuf->ctime = sb.st_ctime;
732
733 return TRUE;
734 }
735
736
740 struct DBusDirIter
741 {
742 DIR *d;
744 };
745
753 DBusDirIter*
754 _dbus_directory_open (const DBusString *filename,
755 DBusError *error)
756 {
757 DIR *d;
758 DBusDirIter *iter;
759 const char *filename_c;
760
761 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
762
763 filename_c = _dbus_string_get_const_data (filename);
764
765 d = opendir (filename_c);
766 if (d == NULL)
767 {
768 dbus_set_error (error, _dbus_error_from_errno (errno),
769 "Failed to read directory \"%s\": %s",
770 filename_c,
771 _dbus_strerror (errno));
772 return NULL;
773 }
774 iter = dbus_new0 (DBusDirIter, 1);
775 if (iter == NULL)
776 {
777 closedir (d);
778 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
779 "Could not allocate memory for directory iterator");
780 return NULL;
781 }
782
783 iter->d = d;
784
785 return iter;
786 }
787
801 dbus_bool_t
802 _dbus_directory_get_next_file (DBusDirIter *iter,
803 DBusString *filename,
804 DBusError *error)
805 {
806 struct dirent *ent;
807 int err;
808
809 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
810
811 again:
812 errno = 0;
813 ent = readdir (iter->d);
814
815 if (!ent)
816 {
817 err = errno;
818
819 if (err != 0)
820 dbus_set_error (error,
821 _dbus_error_from_errno (err),
822 "%s", _dbus_strerror (err));
823
824 return FALSE;
825 }
826 else if (ent->d_name[0] == '.' &&
827 (ent->d_name[1] == '\0' ||
828 (ent->d_name[1] == '.' && ent->d_name[2] == '\0')))
829 goto again;
830 else
831 {
832 _dbus_string_set_length (filename, 0);
833 if (!_dbus_string_append (filename, ent->d_name))
834 {
835 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
836 "No memory to read directory entry");
837 return FALSE;
838 }
839 else
840 {
841 return TRUE;
842 }
843 }
844 }
845
849 void
850 _dbus_directory_close (DBusDirIter *iter)
851 {
852 closedir (iter->d);
853 dbus_free (iter);
854 }
855
856 static dbus_bool_t
857 fill_user_info_from_group (struct group *g,
858 DBusGroupInfo *info,
859 DBusError *error)
860 {
861 _dbus_assert (g->gr_name != NULL);
862
863 info->gid = g->gr_gid;
864 info->groupname = _dbus_strdup (g->gr_name);
865
866 /* info->members = dbus_strdupv (g->gr_mem) */
867
868 if (info->groupname == NULL)
869 {
870 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
871 return FALSE;
872 }
873
874 return TRUE;
875 }
876
877 static dbus_bool_t
878 fill_group_info (DBusGroupInfo *info,
879 dbus_gid_t gid,
880 const DBusString *groupname,
881 DBusError *error)
882 {
883 const char *group_c_str;
884
885 _dbus_assert (groupname != NULL || gid != DBUS_GID_UNSET);
886 _dbus_assert (groupname == NULL || gid == DBUS_GID_UNSET);
887
888 if (groupname)
889 group_c_str = _dbus_string_get_const_data (groupname);
890 else
891 group_c_str = NULL;
892
893 /* For now assuming that the getgrnam() and getgrgid() flavors
894 * always correspond to the pwnam flavors, if not we have
895 * to add more configure checks.
896 */
897
898 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
899 {
900 struct group *g;
901 int result;
902 size_t buflen;
903 char *buf;
904 struct group g_str;
905 dbus_bool_t b;
906
907 /* retrieve maximum needed size for buf */
908 buflen = sysconf (_SC_GETGR_R_SIZE_MAX);
909
910 /* sysconf actually returns a long, but everything else expects size_t,
911 * so just recast here.
912 * https://bugs.freedesktop.org/show_bug.cgi?id=17061
913 */
914 if ((long) buflen <= 0)
915 buflen = 1024;
916
917 result = -1;
918 while (1)
919 {
920 buf = dbus_malloc (buflen);
921 if (buf == NULL)
922 {
923 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
924 return FALSE;
925 }
926
927 g = NULL;
928 #ifdef HAVE_POSIX_GETPWNAM_R
929 if (group_c_str)
930 result = getgrnam_r (group_c_str, &g_str, buf, buflen,
931 &g);
932 else
933 result = getgrgid_r (gid, &g_str, buf, buflen,
934 &g);
935 #else
936 g = getgrnam_r (group_c_str, &g_str, buf, buflen);
937 result = 0;
938 #endif /* !HAVE_POSIX_GETPWNAM_R */
939 /* Try a bigger buffer if ERANGE was returned:
940 https://bugs.freedesktop.org/show_bug.cgi?id=16727
941 */
942 if (result == ERANGE && buflen < 512 * 1024)
943 {
944 dbus_free (buf);
945 buflen *= 2;
946 }
947 else
948 {
949 break;
950 }
951 }
952
953 if (result == 0 && g == &g_str)
954 {
955 b = fill_user_info_from_group (g, info, error);
956 dbus_free (buf);
957 return b;
958 }
959 else
960 {
961 dbus_set_error (error, _dbus_error_from_errno (errno),
962 "Group %s unknown or failed to look it up\n",
963 group_c_str ? group_c_str : "???");
964 dbus_free (buf);
965 return FALSE;
966 }
967 }
968 #else /* ! HAVE_GETPWNAM_R */
969 {
970 /* I guess we're screwed on thread safety here */
971 struct group *g;
972
973 g = getgrnam (group_c_str);
974
975 if (g != NULL)
976 {
977 return fill_user_info_from_group (g, info, error);
978 }
979 else
980 {
981 dbus_set_error (error, _dbus_error_from_errno (errno),
982 "Group %s unknown or failed to look it up\n",
983 group_c_str ? group_c_str : "???");
984 return FALSE;
985 }
986 }
987 #endif /* ! HAVE_GETPWNAM_R */
988 }
989
999 dbus_bool_t
1000 _dbus_group_info_fill (DBusGroupInfo *info,
1001 const DBusString *groupname,
1002 DBusError *error)
1003 {
1004 return fill_group_info (info, DBUS_GID_UNSET,
1005 groupname, error);
1006
1007 }
1008
1018 dbus_bool_t
1019 _dbus_group_info_fill_gid (DBusGroupInfo *info,
1020 dbus_gid_t gid,
1021 DBusError *error)
1022 {
1023 return fill_group_info (info, gid, NULL, error);
1024 }
1025
1034 dbus_bool_t
1035 _dbus_parse_unix_user_from_config (const DBusString *username,
1036 dbus_uid_t *uid_p)
1037 {
1038 return _dbus_get_user_id (username, uid_p);
1039
1040 }
1041
1050 dbus_bool_t
1051 _dbus_parse_unix_group_from_config (const DBusString *groupname,
1052 dbus_gid_t *gid_p)
1053 {
1054 return _dbus_get_group_id (groupname, gid_p);
1055 }
1056
1067 dbus_bool_t
1068 _dbus_unix_groups_from_uid (dbus_uid_t uid,
1069 dbus_gid_t **group_ids,
1070 int *n_group_ids)
1071 {
1072 return _dbus_groups_from_uid (uid, group_ids, n_group_ids);
1073 }
1074
1084 dbus_bool_t
1085 _dbus_unix_user_is_at_console (dbus_uid_t uid,
1086 DBusError *error)
1087 {
1088 return _dbus_is_console_user (uid, error);
1089
1090 }
1091
1099 dbus_bool_t
1100 _dbus_unix_user_is_process_owner (dbus_uid_t uid)
1101 {
1102 return uid == _dbus_geteuid ();
1103 }
1104
1112 dbus_bool_t
1113 _dbus_windows_user_is_process_owner (const char *windows_sid)
1114 {
1115 return FALSE;
1116 }
1117 /* End of DBusInternalsUtils functions */
1119
1131 dbus_bool_t
1132 _dbus_string_get_dirname (const DBusString *filename,
1133 DBusString *dirname)
1134 {
1135 int sep;
1136
1137 _dbus_assert (filename != dirname);
1138 _dbus_assert (filename != NULL);
1139 _dbus_assert (dirname != NULL);
1140
1141 /* Ignore any separators on the end */
1142 sep = _dbus_string_get_length (filename);
1143 if (sep == 0)
1144 return _dbus_string_append (dirname, "."); /* empty string passed in */
1145
1146 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
1147 --sep;
1148
1149 _dbus_assert (sep >= 0);
1150
1151 if (sep == 0)
1152 return _dbus_string_append (dirname, "/");
1153
1154 /* Now find the previous separator */
1155 _dbus_string_find_byte_backward (filename, sep, '/', &sep);
1156 if (sep < 0)
1157 return _dbus_string_append (dirname, ".");
1158
1159 /* skip multiple separators */
1160 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
1161 --sep;
1162
1163 _dbus_assert (sep >= 0);
1164
1165 if (sep == 0 &&
1166 _dbus_string_get_byte (filename, 0) == '/')
1167 return _dbus_string_append (dirname, "/");
1168 else
1169 return _dbus_string_copy_len (filename, 0, sep - 0,
1170 dirname, _dbus_string_get_length (dirname));
1171 } /* DBusString stuff */
1173
1174 static void
1175 string_squash_nonprintable (DBusString *str)
1176 {
1177 unsigned char *buf;
1178 int i, len;
1179
1180 buf = _dbus_string_get_data (str);
1181 len = _dbus_string_get_length (str);
1182
1183 for (i = 0; i < len; i++)
1184 {
1185 unsigned char c = (unsigned char) buf[i];
1186 if (c == '\0')
1187 buf[i] = ' ';
1188 else if (c < 0x20 || c > 127)
1189 buf[i] = '?';
1190 }
1191 }
1192
1207 dbus_bool_t
1208 _dbus_command_for_pid (unsigned long pid,
1209 DBusString *str,
1210 int max_len,
1211 DBusError *error)
1212 {
1213 /* This is all Linux-specific for now */
1214 DBusString path;
1215 DBusString cmdline;
1216 int fd;
1217
1218 if (!_dbus_string_init (&path))
1219 {
1220 _DBUS_SET_OOM (error);
1221 return FALSE;
1222 }
1223
1224 if (!_dbus_string_init (&cmdline))
1225 {
1226 _DBUS_SET_OOM (error);
1227 _dbus_string_free (&path);
1228 return FALSE;
1229 }
1230
1231 if (!_dbus_string_append_printf (&path, "/proc/%ld/cmdline", pid))
1232 goto oom;
1233
1234 fd = open (_dbus_string_get_const_data (&path), O_RDONLY);
1235 if (fd < 0)
1236 {
1237 dbus_set_error (error,
1238 _dbus_error_from_errno (errno),
1239 "Failed to open \"%s\": %s",
1240 _dbus_string_get_const_data (&path),
1241 _dbus_strerror (errno));
1242 goto fail;
1243 }
1244
1245 if (!_dbus_read (fd, &cmdline, max_len))
1246 {
1247 dbus_set_error (error,
1248 _dbus_error_from_errno (errno),
1249 "Failed to read from \"%s\": %s",
1250 _dbus_string_get_const_data (&path),
1251 _dbus_strerror (errno));
1252 _dbus_close (fd, NULL);
1253 goto fail;
1254 }
1255
1256 if (!_dbus_close (fd, error))
1257 goto fail;
1258
1259 string_squash_nonprintable (&cmdline);
1260
1261 if (!_dbus_string_copy (&cmdline, 0, str, _dbus_string_get_length (str)))
1262 goto oom;
1263
1264 _dbus_string_free (&cmdline);
1265 _dbus_string_free (&path);
1266 return TRUE;
1267 oom:
1268 _DBUS_SET_OOM (error);
1269 fail:
1270 _dbus_string_free (&cmdline);
1271 _dbus_string_free (&path);
1272 return FALSE;
1273 }
1274
1275 /*
1276 * replaces the term DBUS_PREFIX in configure_time_path by the
1277 * current dbus installation directory. On unix this function is a noop
1278 *
1279 * @param configure_time_path
1280 * @return real path
1281 */
1282 const char *
1283 _dbus_replace_install_prefix (const char *configure_time_path)
1284 {
1285 return configure_time_path;
1286 }
1287
1288 #define DBUS_UNIX_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
1289 #define DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services"
1290
1308 dbus_bool_t
1309 _dbus_get_standard_session_servicedirs (DBusList **dirs)
1310 {
1311 const char *xdg_data_home;
1312 const char *xdg_data_dirs;
1313 DBusString servicedir_path;
1314
1315 if (!_dbus_string_init (&servicedir_path))
1316 return FALSE;
1317
1318 xdg_data_home = _dbus_getenv ("XDG_DATA_HOME");
1319 xdg_data_dirs = _dbus_getenv ("XDG_DATA_DIRS");
1320
1321 if (xdg_data_home != NULL)
1322 {
1323 if (!_dbus_string_append (&servicedir_path, xdg_data_home))
1324 goto oom;
1325 }
1326 else
1327 {
1328 const DBusString *homedir;
1329 DBusString local_share;
1330
1331 if (!_dbus_homedir_from_current_process (&homedir))
1332 goto oom;
1333
1334 if (!_dbus_string_append (&servicedir_path, _dbus_string_get_const_data (homedir)))
1335 goto oom;
1336
1337 _dbus_string_init_const (&local_share, "/.local/share");
1338 if (!_dbus_concat_dir_and_file (&servicedir_path, &local_share))
1339 goto oom;
1340 }
1341
1342 if (!_dbus_string_append (&servicedir_path, ":"))
1343 goto oom;
1344
1345 if (xdg_data_dirs != NULL)
1346 {
1347 if (!_dbus_string_append (&servicedir_path, xdg_data_dirs))
1348 goto oom;
1349
1350 if (!_dbus_string_append (&servicedir_path, ":"))
1351 goto oom;
1352 }
1353 else
1354 {
1355 if (!_dbus_string_append (&servicedir_path, "/usr/local/share:/usr/share:"))
1356 goto oom;
1357 }
1358
1359 /*
1360 * add configured datadir to defaults
1361 * this may be the same as an xdg dir
1362 * however the config parser should take
1363 * care of duplicates
1364 */
1365 if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR))
1366 goto oom;
1367
1368 if (!_dbus_split_paths_and_append (&servicedir_path,
1369 DBUS_UNIX_STANDARD_SESSION_SERVICEDIR,
1370 dirs))
1371 goto oom;
1372
1373 _dbus_string_free (&servicedir_path);
1374 return TRUE;
1375
1376 oom:
1377 _dbus_string_free (&servicedir_path);
1378 return FALSE;
1379 }
1380
1381
1400 dbus_bool_t
1401 _dbus_get_standard_system_servicedirs (DBusList **dirs)
1402 {
1403 /*
1404 * DBUS_DATADIR may be the same as one of the standard directories. However,
1405 * the config parser should take care of the duplicates.
1406 *
1407 * Also, append /lib as counterpart of /usr/share on the root
1408 * directory (the root directory does not know /share), in order to
1409 * facilitate early boot system bus activation where /usr might not
1410 * be available.
1411 */
1412 static const char standard_search_path[] =
1413 "/usr/local/share:"
1414 "/usr/share:"
1415 DBUS_DATADIR ":"
1416 "/lib";
1417 DBusString servicedir_path;
1418
1419 _dbus_string_init_const (&servicedir_path, standard_search_path);
1420
1421 return _dbus_split_paths_and_append (&servicedir_path,
1422 DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR,
1423 dirs);
1424 }
1425
1434 dbus_bool_t
1435 _dbus_append_system_config_file (DBusString *str)
1436 {
1437 return _dbus_string_append (str, DBUS_SYSTEM_CONFIG_FILE);
1438 }
1439
1446 dbus_bool_t
1447 _dbus_append_session_config_file (DBusString *str)
1448 {
1449 return _dbus_string_append (str, DBUS_SESSION_CONFIG_FILE);
1450 }
_dbus_string_append
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
Definition: dbus-string.c:935
_dbus_split_paths_and_append
dbus_bool_t _dbus_split_paths_and_append(DBusString *dirs, const char *suffix, DBusList **dir_list)
Split paths into a list of char strings.
Definition: dbus-sysdeps.c:226
DBusError::message
const char * message
public error message field
Definition: dbus-errors.h:51
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
_dbus_append_system_config_file
dbus_bool_t _dbus_append_system_config_file(DBusString *str)
Append the absolute path of the system.conf file (there is no system bus on Windows so this can just ...
Definition: dbus-sysdeps-util-unix.c:1435
_dbus_become_daemon
dbus_bool_t _dbus_become_daemon(const DBusString *pidfile, DBusPipe *print_pid_pipe, DBusError *error, dbus_bool_t keep_umask)
Does the chdir, fork, setsid, etc.
Definition: dbus-sysdeps-util-unix.c:85
_dbus_unix_user_is_at_console
dbus_bool_t _dbus_unix_user_is_at_console(dbus_uid_t uid, DBusError *error)
Checks to see if the UNIX user ID is at the console.
Definition: dbus-sysdeps-util-unix.c:1085
_dbus_group_info_fill_gid
dbus_bool_t _dbus_group_info_fill_gid(DBusGroupInfo *info, dbus_gid_t gid, DBusError *error)
Initializes the given DBusGroupInfo struct with information about the given group ID...
Definition: dbus-sysdeps-util-unix.c:1019
_dbus_string_get_dirname
dbus_bool_t _dbus_string_get_dirname(const DBusString *filename, DBusString *dirname)
Get the directory name from a complete filename.
Definition: dbus-sysdeps-util-unix.c:1132
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition: dbus-memory.c:701
_dbus_path_is_absolute
dbus_bool_t _dbus_path_is_absolute(const DBusString *filename)
Checks whether the filename is an absolute path.
Definition: dbus-sysdeps-util-unix.c:689
_dbus_system_log
void _dbus_system_log(DBusSystemLogSeverity severity, const char *msg,...)
Log a message to the system log file (e.g.
Definition: dbus-sysdeps-util-unix.c:543
DBusStat
Portable struct with stat() results.
Definition: dbus-sysdeps.h:504
DBUS_ERROR_NOT_SUPPORTED
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn&#39;t supported (like ENOSYS on UNIX).
Definition: dbus-protocol.h:369
_dbus_string_append_int
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_string_append_int(DBusString *str, long value)
Appends an integer to a DBusString.
Definition: dbus-sysdeps.c:354
_dbus_groups_from_uid
dbus_bool_t _dbus_groups_from_uid(dbus_uid_t uid, dbus_gid_t **group_ids, int *n_group_ids)
Gets all groups corresponding to the given UID.
Definition: dbus-userdb-util.c:388
DBUS_PID_FORMAT
#define DBUS_PID_FORMAT
an appropriate printf format for dbus_pid_t
Definition: dbus-sysdeps.h:119
_dbus_parse_unix_group_from_config
dbus_bool_t _dbus_parse_unix_group_from_config(const DBusString *groupname, dbus_gid_t *gid_p)
Parse a UNIX group from the bus config file.
Definition: dbus-sysdeps-util-unix.c:1051
_dbus_directory_close
void _dbus_directory_close(DBusDirIter *iter)
Closes a directory iteration.
Definition: dbus-sysdeps-util-unix.c:850
_dbus_is_console_user
dbus_bool_t _dbus_is_console_user(dbus_uid_t uid, DBusError *error)
Checks to see if the UID sent in is the console user.
Definition: dbus-userdb-util.c:49
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition: dbus-internals.h:148
_dbus_directory_get_next_file
dbus_bool_t _dbus_directory_get_next_file(DBusDirIter *iter, DBusString *filename, DBusError *error)
Get next file in the directory.
Definition: dbus-sysdeps-util-unix.c:802
DBusStat::atime
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:511
_dbus_get_standard_session_servicedirs
dbus_bool_t _dbus_get_standard_session_servicedirs(DBusList **dirs)
Returns the standard directories for a session bus to look for service activation files...
Definition: dbus-sysdeps-util-unix.c:1309
_dbus_getpid
dbus_pid_t _dbus_getpid(void)
Gets our process ID.
Definition: dbus-sysdeps-unix.c:2662
_dbus_concat_dir_and_file
dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
Definition: dbus-sysdeps-unix.c:3019
_dbus_directory_open
DBusDirIter * _dbus_directory_open(const DBusString *filename, DBusError *error)
Open a directory to iterate over.
Definition: dbus-sysdeps-util-unix.c:754
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:175
_dbus_command_for_pid
dbus_bool_t _dbus_command_for_pid(unsigned long pid, DBusString *str, int max_len, DBusError *error)
Get a printable string describing the command used to execute the process with pid.
Definition: dbus-sysdeps-util-unix.c:1208
_dbus_string_copy
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that&#39;s copied to the d...
Definition: dbus-string.c:1283
DBusGroupInfo::groupname
char * groupname
Group name.
Definition: dbus-sysdeps-unix.h:122
DBusSignalHandler
void(* DBusSignalHandler)(int sig)
A UNIX signal handler.
Definition: dbus-sysdeps.h:547
_dbus_error_from_errno
const char * _dbus_error_from_errno(int error_number)
Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.
Definition: dbus-sysdeps.c:590
DBusDirIter
Internals of directory iterator.
Definition: dbus-sysdeps-util-unix.c:740
DBusStat::mode
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:506
dbus_pid_t
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:105
_dbus_get_user_id_and_primary_group
dbus_bool_t _dbus_get_user_id_and_primary_group(const DBusString *username, dbus_uid_t *uid_p, dbus_gid_t *gid_p)
Gets user ID and primary group given username.
Definition: dbus-userdb-util.c:199
_dbus_change_to_daemon_user
dbus_bool_t _dbus_change_to_daemon_user(const char *user, DBusError *error)
Changes the user and group the bus is running as.
Definition: dbus-sysdeps-util-unix.c:332
DBusDirIter::d
DIR * d
The DIR* from opendir()
Definition: dbus-sysdeps-util-unix.c:742
dbus_malloc
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
Definition: dbus-memory.c:461
DBusStat::gid
dbus_gid_t gid
Group owning file.
Definition: dbus-sysdeps.h:509
dbus_new0
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition: dbus-memory.h:59
DBusPipe
Definition: dbus-pipe.h:41
DBusString
Definition: dbus-string.h:42
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
_dbus_string_init_const
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
Definition: dbus-string.c:190
_dbus_warn
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
Definition: dbus-internals.c:230
_dbus_read
int _dbus_read(int fd, DBusString *buffer, int count)
Thin wrapper around the read() system call that appends the data it reads to the DBusString buffer...
Definition: dbus-sysdeps-unix.c:701
_dbus_string_append_printf
dbus_bool_t _dbus_string_append_printf(DBusString *str, const char *format,...)
Appends a printf-style formatted string to the DBusString.
Definition: dbus-string.c:1114
_dbus_group_info_fill
dbus_bool_t _dbus_group_info_fill(DBusGroupInfo *info, const DBusString *groupname, DBusError *error)
Initializes the given DBusGroupInfo struct with information about the given group name...
Definition: dbus-sysdeps-util-unix.c:1000
_dbus_get_group_id
dbus_bool_t _dbus_get_group_id(const DBusString *groupname, dbus_gid_t *gid)
Gets group ID given groupname.
Definition: dbus-userdb-util.c:160
DBusError
Object representing an exception.
Definition: dbus-errors.h:48
dbus_set_error
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
Definition: dbus-errors.c:354
_dbus_unix_groups_from_uid
dbus_bool_t _dbus_unix_groups_from_uid(dbus_uid_t uid, dbus_gid_t **group_ids, int *n_group_ids)
Gets all groups corresponding to the given UNIX user ID.
Definition: dbus-sysdeps-util-unix.c:1068
DBusStat::ctime
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:513
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
Definition: dbus-string.c:259
DBUS_GID_UNSET
#define DBUS_GID_UNSET
an invalid GID used to represent an uninitialized dbus_gid_t field
Definition: dbus-sysdeps.h:116
_dbus_geteuid
dbus_uid_t _dbus_geteuid(void)
Gets our effective UID.
Definition: dbus-sysdeps-unix.c:2680
_dbus_file_exists
dbus_bool_t _dbus_file_exists(const char *file)
Checks if a file exists.
Definition: dbus-sysdeps-util-unix.c:633
TRUE
#define TRUE
Expands to "1".
DBusStat::nlink
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:507
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition: dbus-internals.h:159
_dbus_write_pid_to_file_and_pipe
dbus_bool_t _dbus_write_pid_to_file_and_pipe(const DBusString *pidfile, DBusPipe *print_pid_pipe, dbus_pid_t pid_to_write, DBusError *error)
Writes the given pid_to_write to a pidfile (if non-NULL) and/or to a pipe (if non-NULL).
Definition: dbus-sysdeps-util-unix.c:238
DBusStat::uid
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:508
_dbus_system_logv
void _dbus_system_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g.
Definition: dbus-sysdeps-util-unix.c:565
DBUS_ERROR_FAILED
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
Definition: dbus-protocol.h:355
_dbus_verify_daemon_user
dbus_bool_t _dbus_verify_daemon_user(const char *user)
Verify that after the fork we can successfully change to this user.
Definition: dbus-sysdeps-util-unix.c:312
_dbus_string_find_byte_backward
dbus_bool_t _dbus_string_find_byte_backward(const DBusString *str, int start, unsigned char byte, int *found)
Find the given byte scanning backward from the given start.
Definition: dbus-string-util.c:90
_dbus_homedir_from_current_process
dbus_bool_t _dbus_homedir_from_current_process(const DBusString **homedir)
Gets homedir of user owning current process.
Definition: dbus-userdb.c:395
DBusGroupInfo
Information about a UNIX group.
Definition: dbus-sysdeps-unix.h:119
_dbus_stat
dbus_bool_t _dbus_stat(const DBusString *filename, DBusStat *statbuf, DBusError *error)
stat() wrapper.
Definition: dbus-sysdeps-util-unix.c:706
_dbus_get_user_id
dbus_bool_t _dbus_get_user_id(const DBusString *username, dbus_uid_t *uid)
Gets user ID given username.
Definition: dbus-userdb-util.c:146
_dbus_set_signal_handler
void _dbus_set_signal_handler(int sig, DBusSignalHandler handler)
Installs a UNIX signal handler.
Definition: dbus-sysdeps-util-unix.c:614
DBusList
A node in a linked list.
Definition: dbus-list.h:34
_dbus_unix_user_is_process_owner
dbus_bool_t _dbus_unix_user_is_process_owner(dbus_uid_t uid)
Checks to see if the UNIX user ID matches the UID of the process.
Definition: dbus-sysdeps-util-unix.c:1100
_dbus_user_at_console
dbus_bool_t _dbus_user_at_console(const char *username, DBusError *error)
Checks if user is at the console.
Definition: dbus-sysdeps-util-unix.c:645
_dbus_windows_user_is_process_owner
dbus_bool_t _dbus_windows_user_is_process_owner(const char *windows_sid)
Checks to see if the Windows user SID matches the owner of the process.
Definition: dbus-sysdeps-util-unix.c:1113
DBUS_ERROR_NO_MEMORY
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
Definition: dbus-protocol.h:357
_dbus_close
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
Definition: dbus-sysdeps-unix.c:3213
FALSE
#define FALSE
Expands to "0".
DBusStat::mtime
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:512
_dbus_string_set_length
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
Definition: dbus-string.c:802
_dbus_string_copy_len
dbus_bool_t _dbus_string_copy_len(const DBusString *source, int start, int len, DBusString *dest, int insert_at)
Like _dbus_string_copy(), but can copy a segment from the middle of the source string.
Definition: dbus-string.c:1375
DBusGroupInfo::gid
dbus_gid_t gid
GID.
Definition: dbus-sysdeps-unix.h:121
dbus_gid_t
unsigned long dbus_gid_t
A group ID.
Definition: dbus-sysdeps.h:109
DBusStat::size
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:510
_dbus_parse_unix_user_from_config
dbus_bool_t _dbus_parse_unix_user_from_config(const DBusString *username, dbus_uid_t *uid_p)
Parse a UNIX user from the bus config file.
Definition: dbus-sysdeps-util-unix.c:1035
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition: dbus-internals.c:537
_dbus_append_session_config_file
dbus_bool_t _dbus_append_session_config_file(DBusString *str)
Append the absolute path of the session.conf file.
Definition: dbus-sysdeps-util-unix.c:1447
_dbus_getenv
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
Definition: dbus-sysdeps.c:185
dbus_uid_t
unsigned long dbus_uid_t
A user ID.
Definition: dbus-sysdeps.h:107
_dbus_get_standard_system_servicedirs
dbus_bool_t _dbus_get_standard_system_servicedirs(DBusList **dirs)
Returns the standard directories for a system bus to look for service activation files.
Definition: dbus-sysdeps-util-unix.c:1401
dbus_error_is_set
dbus_bool_t dbus_error_is_set(const DBusError *error)
Checks whether an error occurred (the error is set).
Definition: dbus-errors.c:329