D-Bus: dbus-sysdeps-util-unix.c Source File

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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 #include "sd-daemon.h"
62
63 #ifndef O_BINARY
64 #define O_BINARY 0
65 #endif
66
82 dbus_bool_t
83 _dbus_become_daemon (const DBusString *pidfile,
84 DBusPipe *print_pid_pipe,
85 DBusError *error,
86 dbus_bool_t keep_umask)
87 {
88 const char *s;
89 pid_t child_pid;
90 int dev_null_fd;
91
92 _dbus_verbose ("Becoming a daemon...\n");
93
94 _dbus_verbose ("chdir to /\n");
95 if (chdir ("/") < 0)
96 {
97 dbus_set_error (error, DBUS_ERROR_FAILED,
98 "Could not chdir() to root directory");
99 return FALSE;
100 }
101
102 _dbus_verbose ("forking...\n");
103 switch ((child_pid = fork ()))
104 {
105 case -1:
106 _dbus_verbose ("fork failed\n");
107 dbus_set_error (error, _dbus_error_from_errno (errno),
108 "Failed to fork daemon: %s", _dbus_strerror (errno));
109 return FALSE;
110 break;
111
112 case 0:
113 _dbus_verbose ("in child, closing std file descriptors\n");
114
115 /* silently ignore failures here, if someone
116 * doesn't have /dev/null we may as well try
117 * to continue anyhow
118 */
119
120 dev_null_fd = open ("/dev/null", O_RDWR);
121 if (dev_null_fd >= 0)
122 {
123 dup2 (dev_null_fd, 0);
124 dup2 (dev_null_fd, 1);
125
126 s = _dbus_getenv ("DBUS_DEBUG_OUTPUT");
127 if (s == NULL || *s == '\0')
128 dup2 (dev_null_fd, 2);
129 else
130 _dbus_verbose ("keeping stderr open due to DBUS_DEBUG_OUTPUT\n");
131 close (dev_null_fd);
132 }
133
134 if (!keep_umask)
135 {
136 /* Get a predictable umask */
137 _dbus_verbose ("setting umask\n");
138 umask (022);
139 }
140
141 _dbus_verbose ("calling setsid()\n");
142 if (setsid () == -1)
143 _dbus_assert_not_reached ("setsid() failed");
144
145 break;
146
147 default:
148 if (!_dbus_write_pid_to_file_and_pipe (pidfile, print_pid_pipe,
149 child_pid, error))
150 {
151 _dbus_verbose ("pid file or pipe write failed: %s\n",
152 error->message);
153 kill (child_pid, SIGTERM);
154 return FALSE;
155 }
156
157 _dbus_verbose ("parent exiting\n");
158 _exit (0);
159 break;
160 }
161
162 return TRUE;
163 }
164
165
174 static dbus_bool_t
175 _dbus_write_pid_file (const DBusString *filename,
176 unsigned long pid,
177 DBusError *error)
178 {
179 const char *cfilename;
180 int fd;
181 FILE *f;
182
183 cfilename = _dbus_string_get_const_data (filename);
184
185 fd = open (cfilename, O_WRONLY|O_CREAT|O_EXCL|O_BINARY, 0644);
186
187 if (fd < 0)
188 {
189 dbus_set_error (error, _dbus_error_from_errno (errno),
190 "Failed to open \"%s\": %s", cfilename,
191 _dbus_strerror (errno));
192 return FALSE;
193 }
194
195 if ((f = fdopen (fd, "w")) == NULL)
196 {
197 dbus_set_error (error, _dbus_error_from_errno (errno),
198 "Failed to fdopen fd %d: %s", fd, _dbus_strerror (errno));
199 _dbus_close (fd, NULL);
200 return FALSE;
201 }
202
203 if (fprintf (f, "%lu\n", pid) < 0)
204 {
205 dbus_set_error (error, _dbus_error_from_errno (errno),
206 "Failed to write to \"%s\": %s", cfilename,
207 _dbus_strerror (errno));
208
209 fclose (f);
210 return FALSE;
211 }
212
213 if (fclose (f) == EOF)
214 {
215 dbus_set_error (error, _dbus_error_from_errno (errno),
216 "Failed to close \"%s\": %s", cfilename,
217 _dbus_strerror (errno));
218 return FALSE;
219 }
220
221 return TRUE;
222 }
223
235 dbus_bool_t
236 _dbus_write_pid_to_file_and_pipe (const DBusString *pidfile,
237 DBusPipe *print_pid_pipe,
238 dbus_pid_t pid_to_write,
239 DBusError *error)
240 {
241 if (pidfile)
242 {
243 _dbus_verbose ("writing pid file %s\n", _dbus_string_get_const_data (pidfile));
244 if (!_dbus_write_pid_file (pidfile,
245 pid_to_write,
246 error))
247 {
248 _dbus_verbose ("pid file write failed\n");
249 _DBUS_ASSERT_ERROR_IS_SET(error);
250 return FALSE;
251 }
252 }
253 else
254 {
255 _dbus_verbose ("No pid file requested\n");
256 }
257
258 if (print_pid_pipe != NULL && _dbus_pipe_is_valid (print_pid_pipe))
259 {
260 DBusString pid;
261 int bytes;
262
263 _dbus_verbose ("writing our pid to pipe %d\n",
264 print_pid_pipe->fd);
265
266 if (!_dbus_string_init (&pid))
267 {
268 _DBUS_SET_OOM (error);
269 return FALSE;
270 }
271
272 if (!_dbus_string_append_int (&pid, pid_to_write) ||
273 !_dbus_string_append (&pid, "\n"))
274 {
275 _dbus_string_free (&pid);
276 _DBUS_SET_OOM (error);
277 return FALSE;
278 }
279
280 bytes = _dbus_string_get_length (&pid);
281 if (_dbus_pipe_write (print_pid_pipe, &pid, 0, bytes, error) != bytes)
282 {
283 /* _dbus_pipe_write sets error only on failure, not short write */
284 if (error != NULL && !dbus_error_is_set(error))
285 {
286 dbus_set_error (error, DBUS_ERROR_FAILED,
287 "Printing message bus PID: did not write enough bytes\n");
288 }
289 _dbus_string_free (&pid);
290 return FALSE;
291 }
292
293 _dbus_string_free (&pid);
294 }
295 else
296 {
297 _dbus_verbose ("No pid pipe to write to\n");
298 }
299
300 return TRUE;
301 }
302
309 dbus_bool_t
310 _dbus_verify_daemon_user (const char *user)
311 {
312 DBusString u;
313
314 _dbus_string_init_const (&u, user);
315
316 return _dbus_get_user_id_and_primary_group (&u, NULL, NULL);
317 }
318
319
320 /* The HAVE_LIBAUDIT case lives in selinux.c */
321 #ifndef HAVE_LIBAUDIT
322
329 dbus_bool_t
330 _dbus_change_to_daemon_user (const char *user,
331 DBusError *error)
332 {
333 dbus_uid_t uid;
334 dbus_gid_t gid;
335 DBusString u;
336
337 _dbus_string_init_const (&u, user);
338
339 if (!_dbus_get_user_id_and_primary_group (&u, &uid, &gid))
340 {
341 dbus_set_error (error, DBUS_ERROR_FAILED,
342 "User '%s' does not appear to exist?",
343 user);
344 return FALSE;
345 }
346
347 /* setgroups() only works if we are a privileged process,
348 * so we don't return error on failure; the only possible
349 * failure is that we don't have perms to do it.
350 *
351 * not sure this is right, maybe if setuid()
352 * is going to work then setgroups() should also work.
353 */
354 if (setgroups (0, NULL) < 0)
355 _dbus_warn ("Failed to drop supplementary groups: %s\n",
356 _dbus_strerror (errno));
357
358 /* Set GID first, or the setuid may remove our permission
359 * to change the GID
360 */
361 if (setgid (gid) < 0)
362 {
363 dbus_set_error (error, _dbus_error_from_errno (errno),
364 "Failed to set GID to %lu: %s", gid,
365 _dbus_strerror (errno));
366 return FALSE;
367 }
368
369 if (setuid (uid) < 0)
370 {
371 dbus_set_error (error, _dbus_error_from_errno (errno),
372 "Failed to set UID to %lu: %s", uid,
373 _dbus_strerror (errno));
374 return FALSE;
375 }
376
377 return TRUE;
378 }
379 #endif /* !HAVE_LIBAUDIT */
380
381 #ifdef HAVE_SETRLIMIT
382
383 /* We assume that if we have setrlimit, we also have getrlimit and
384 * struct rlimit.
385 */
386
387 struct DBusRLimit {
388 struct rlimit lim;
389 };
390
391 DBusRLimit *
392 _dbus_rlimit_save_fd_limit (DBusError *error)
393 {
394 DBusRLimit *self;
395
396 self = dbus_new0 (DBusRLimit, 1);
397
398 if (self == NULL)
399 {
400 _DBUS_SET_OOM (error);
401 return NULL;
402 }
403
404 if (getrlimit (RLIMIT_NOFILE, &self->lim) < 0)
405 {
406 dbus_set_error (error, _dbus_error_from_errno (errno),
407 "Failed to get fd limit: %s", _dbus_strerror (errno));
408 dbus_free (self);
409 return NULL;
410 }
411
412 return self;
413 }
414
415 dbus_bool_t
416 _dbus_rlimit_raise_fd_limit_if_privileged (unsigned int desired,
417 DBusError *error)
418 {
419 struct rlimit lim;
420
421 /* No point to doing this practically speaking
422 * if we're not uid 0. We expect the system
423 * bus to use this before we change UID, and
424 * the session bus takes the Linux default,
425 * currently 1024 for cur and 4096 for max.
426 */
427 if (getuid () != 0)
428 {
429 /* not an error, we're probably the session bus */
430 return TRUE;
431 }
432
433 if (getrlimit (RLIMIT_NOFILE, &lim) < 0)
434 {
435 dbus_set_error (error, _dbus_error_from_errno (errno),
436 "Failed to get fd limit: %s", _dbus_strerror (errno));
437 return FALSE;
438 }
439
440 if (lim.rlim_cur == RLIM_INFINITY || lim.rlim_cur >= desired)
441 {
442 /* not an error, everything is fine */
443 return TRUE;
444 }
445
446 /* Ignore "maximum limit", assume we have the "superuser"
447 * privileges. On Linux this is CAP_SYS_RESOURCE.
448 */
449 lim.rlim_cur = lim.rlim_max = desired;
450
451 if (setrlimit (RLIMIT_NOFILE, &lim) < 0)
452 {
453 dbus_set_error (error, _dbus_error_from_errno (errno),
454 "Failed to set fd limit to %u: %s",
455 desired, _dbus_strerror (errno));
456 return FALSE;
457 }
458
459 return TRUE;
460 }
461
462 dbus_bool_t
463 _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
464 DBusError *error)
465 {
466 if (setrlimit (RLIMIT_NOFILE, &saved->lim) < 0)
467 {
468 dbus_set_error (error, _dbus_error_from_errno (errno),
469 "Failed to restore old fd limit: %s",
470 _dbus_strerror (errno));
471 return FALSE;
472 }
473
474 return TRUE;
475 }
476
477 #else /* !HAVE_SETRLIMIT */
478
479 static void
480 fd_limit_not_supported (DBusError *error)
481 {
482 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED,
483 "cannot change fd limit on this platform");
484 }
485
486 DBusRLimit *
487 _dbus_rlimit_save_fd_limit (DBusError *error)
488 {
489 fd_limit_not_supported (error);
490 return NULL;
491 }
492
493 dbus_bool_t
494 _dbus_rlimit_raise_fd_limit_if_privileged (unsigned int desired,
495 DBusError *error)
496 {
497 fd_limit_not_supported (error);
498 return FALSE;
499 }
500
501 dbus_bool_t
502 _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
503 DBusError *error)
504 {
505 fd_limit_not_supported (error);
506 return FALSE;
507 }
508
509 #endif
510
511 void
512 _dbus_rlimit_free (DBusRLimit *lim)
513 {
514 dbus_free (lim);
515 }
516
517 void
518 _dbus_init_system_log (dbus_bool_t is_daemon)
519 {
520 #ifdef HAVE_SYSLOG_H
521 int logopts = LOG_PID;
522
523 #if HAVE_DECL_LOG_PERROR
524 #ifdef HAVE_SYSTEMD
525 if (!is_daemon || sd_booted () <= 0)
526 #endif
527 logopts |= LOG_PERROR;
528 #endif
529
530 openlog ("dbus", logopts, LOG_DAEMON);
531 #endif
532 }
533
540 void
541 _dbus_system_log (DBusSystemLogSeverity severity, const char *msg, ...)
542 {
543 va_list args;
544
545 va_start (args, msg);
546
547 _dbus_system_logv (severity, msg, args);
548
549 va_end (args);
550 }
551
562 void
563 _dbus_system_logv (DBusSystemLogSeverity severity, const char *msg, va_list args)
564 {
565 va_list tmp;
566 #ifdef HAVE_SYSLOG_H
567 int flags;
568 switch (severity)
569 {
570 case DBUS_SYSTEM_LOG_INFO:
571 flags = LOG_DAEMON | LOG_NOTICE;
572 break;
573 case DBUS_SYSTEM_LOG_SECURITY:
574 flags = LOG_AUTH | LOG_NOTICE;
575 break;
576 case DBUS_SYSTEM_LOG_FATAL:
577 flags = LOG_DAEMON|LOG_CRIT;
578 break;
579 default:
580 return;
581 }
582
583 DBUS_VA_COPY (tmp, args);
584 vsyslog (flags, msg, tmp);
585 va_end (tmp);
586 #endif
587
588 #if !defined(HAVE_SYSLOG_H) || !HAVE_DECL_LOG_PERROR
589 {
590 /* vsyslog() won't write to stderr, so we'd better do it */
591 DBUS_VA_COPY (tmp, args);
592 fprintf (stderr, "dbus[" DBUS_PID_FORMAT "]: ", _dbus_getpid ());
593 vfprintf (stderr, msg, tmp);
594 fputc ('\n', stderr);
595 va_end (tmp);
596 }
597 #endif
598
599 if (severity == DBUS_SYSTEM_LOG_FATAL)
600 exit (1);
601 }
602
608 void
609 _dbus_set_signal_handler (int sig,
610 DBusSignalHandler handler)
611 {
612 struct sigaction act;
613 sigset_t empty_mask;
614
615 sigemptyset (&empty_mask);
616 act.sa_handler = handler;
617 act.sa_mask = empty_mask;
618 act.sa_flags = 0;
619 sigaction (sig, &act, NULL);
620 }
621
627 dbus_bool_t
628 _dbus_file_exists (const char *file)
629 {
630 return (access (file, F_OK) == 0);
631 }
632
639 dbus_bool_t
640 _dbus_user_at_console (const char *username,
641 DBusError *error)
642 {
643
644 DBusString u, f;
645 dbus_bool_t result;
646
647 result = FALSE;
648 if (!_dbus_string_init (&f))
649 {
650 _DBUS_SET_OOM (error);
651 return FALSE;
652 }
653
654 if (!_dbus_string_append (&f, DBUS_CONSOLE_AUTH_DIR))
655 {
656 _DBUS_SET_OOM (error);
657 goto out;
658 }
659
660 _dbus_string_init_const (&u, username);
661
662 if (!_dbus_concat_dir_and_file (&f, &u))
663 {
664 _DBUS_SET_OOM (error);
665 goto out;
666 }
667
668 result = _dbus_file_exists (_dbus_string_get_const_data (&f));
669
670 out:
671 _dbus_string_free (&f);
672
673 return result;
674 }
675
676
683 dbus_bool_t
684 _dbus_path_is_absolute (const DBusString *filename)
685 {
686 if (_dbus_string_get_length (filename) > 0)
687 return _dbus_string_get_byte (filename, 0) == '/';
688 else
689 return FALSE;
690 }
691
700 dbus_bool_t
701 _dbus_stat (const DBusString *filename,
702 DBusStat *statbuf,
703 DBusError *error)
704 {
705 const char *filename_c;
706 struct stat sb;
707
708 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
709
710 filename_c = _dbus_string_get_const_data (filename);
711
712 if (stat (filename_c, &sb) < 0)
713 {
714 dbus_set_error (error, _dbus_error_from_errno (errno),
715 "%s", _dbus_strerror (errno));
716 return FALSE;
717 }
718
719 statbuf->mode = sb.st_mode;
720 statbuf->nlink = sb.st_nlink;
721 statbuf->uid = sb.st_uid;
722 statbuf->gid = sb.st_gid;
723 statbuf->size = sb.st_size;
724 statbuf->atime = sb.st_atime;
725 statbuf->mtime = sb.st_mtime;
726 statbuf->ctime = sb.st_ctime;
727
728 return TRUE;
729 }
730
731
735 struct DBusDirIter
736 {
737 DIR *d;
739 };
740
748 DBusDirIter*
749 _dbus_directory_open (const DBusString *filename,
750 DBusError *error)
751 {
752 DIR *d;
753 DBusDirIter *iter;
754 const char *filename_c;
755
756 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
757
758 filename_c = _dbus_string_get_const_data (filename);
759
760 d = opendir (filename_c);
761 if (d == NULL)
762 {
763 dbus_set_error (error, _dbus_error_from_errno (errno),
764 "Failed to read directory \"%s\": %s",
765 filename_c,
766 _dbus_strerror (errno));
767 return NULL;
768 }
769 iter = dbus_new0 (DBusDirIter, 1);
770 if (iter == NULL)
771 {
772 closedir (d);
773 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
774 "Could not allocate memory for directory iterator");
775 return NULL;
776 }
777
778 iter->d = d;
779
780 return iter;
781 }
782
796 dbus_bool_t
797 _dbus_directory_get_next_file (DBusDirIter *iter,
798 DBusString *filename,
799 DBusError *error)
800 {
801 struct dirent *ent;
802 int err;
803
804 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
805
806 again:
807 errno = 0;
808 ent = readdir (iter->d);
809
810 if (!ent)
811 {
812 err = errno;
813
814 if (err != 0)
815 dbus_set_error (error,
816 _dbus_error_from_errno (err),
817 "%s", _dbus_strerror (err));
818
819 return FALSE;
820 }
821 else if (ent->d_name[0] == '.' &&
822 (ent->d_name[1] == '\0' ||
823 (ent->d_name[1] == '.' && ent->d_name[2] == '\0')))
824 goto again;
825 else
826 {
827 _dbus_string_set_length (filename, 0);
828 if (!_dbus_string_append (filename, ent->d_name))
829 {
830 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
831 "No memory to read directory entry");
832 return FALSE;
833 }
834 else
835 {
836 return TRUE;
837 }
838 }
839 }
840
844 void
845 _dbus_directory_close (DBusDirIter *iter)
846 {
847 closedir (iter->d);
848 dbus_free (iter);
849 }
850
851 static dbus_bool_t
852 fill_user_info_from_group (struct group *g,
853 DBusGroupInfo *info,
854 DBusError *error)
855 {
856 _dbus_assert (g->gr_name != NULL);
857
858 info->gid = g->gr_gid;
859 info->groupname = _dbus_strdup (g->gr_name);
860
861 /* info->members = dbus_strdupv (g->gr_mem) */
862
863 if (info->groupname == NULL)
864 {
865 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
866 return FALSE;
867 }
868
869 return TRUE;
870 }
871
872 static dbus_bool_t
873 fill_group_info (DBusGroupInfo *info,
874 dbus_gid_t gid,
875 const DBusString *groupname,
876 DBusError *error)
877 {
878 const char *group_c_str;
879
880 _dbus_assert (groupname != NULL || gid != DBUS_GID_UNSET);
881 _dbus_assert (groupname == NULL || gid == DBUS_GID_UNSET);
882
883 if (groupname)
884 group_c_str = _dbus_string_get_const_data (groupname);
885 else
886 group_c_str = NULL;
887
888 /* For now assuming that the getgrnam() and getgrgid() flavors
889 * always correspond to the pwnam flavors, if not we have
890 * to add more configure checks.
891 */
892
893 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
894 {
895 struct group *g;
896 int result;
897 size_t buflen;
898 char *buf;
899 struct group g_str;
900 dbus_bool_t b;
901
902 /* retrieve maximum needed size for buf */
903 buflen = sysconf (_SC_GETGR_R_SIZE_MAX);
904
905 /* sysconf actually returns a long, but everything else expects size_t,
906 * so just recast here.
907 * https://bugs.freedesktop.org/show_bug.cgi?id=17061
908 */
909 if ((long) buflen <= 0)
910 buflen = 1024;
911
912 result = -1;
913 while (1)
914 {
915 buf = dbus_malloc (buflen);
916 if (buf == NULL)
917 {
918 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
919 return FALSE;
920 }
921
922 g = NULL;
923 #ifdef HAVE_POSIX_GETPWNAM_R
924 if (group_c_str)
925 result = getgrnam_r (group_c_str, &g_str, buf, buflen,
926 &g);
927 else
928 result = getgrgid_r (gid, &g_str, buf, buflen,
929 &g);
930 #else
931 g = getgrnam_r (group_c_str, &g_str, buf, buflen);
932 result = 0;
933 #endif /* !HAVE_POSIX_GETPWNAM_R */
934 /* Try a bigger buffer if ERANGE was returned:
935 https://bugs.freedesktop.org/show_bug.cgi?id=16727
936 */
937 if (result == ERANGE && buflen < 512 * 1024)
938 {
939 dbus_free (buf);
940 buflen *= 2;
941 }
942 else
943 {
944 break;
945 }
946 }
947
948 if (result == 0 && g == &g_str)
949 {
950 b = fill_user_info_from_group (g, info, error);
951 dbus_free (buf);
952 return b;
953 }
954 else
955 {
956 dbus_set_error (error, _dbus_error_from_errno (errno),
957 "Group %s unknown or failed to look it up\n",
958 group_c_str ? group_c_str : "???");
959 dbus_free (buf);
960 return FALSE;
961 }
962 }
963 #else /* ! HAVE_GETPWNAM_R */
964 {
965 /* I guess we're screwed on thread safety here */
966 struct group *g;
967
968 g = getgrnam (group_c_str);
969
970 if (g != NULL)
971 {
972 return fill_user_info_from_group (g, info, error);
973 }
974 else
975 {
976 dbus_set_error (error, _dbus_error_from_errno (errno),
977 "Group %s unknown or failed to look it up\n",
978 group_c_str ? group_c_str : "???");
979 return FALSE;
980 }
981 }
982 #endif /* ! HAVE_GETPWNAM_R */
983 }
984
994 dbus_bool_t
995 _dbus_group_info_fill (DBusGroupInfo *info,
996 const DBusString *groupname,
997 DBusError *error)
998 {
999 return fill_group_info (info, DBUS_GID_UNSET,
1000 groupname, error);
1001
1002 }
1003
1013 dbus_bool_t
1014 _dbus_group_info_fill_gid (DBusGroupInfo *info,
1015 dbus_gid_t gid,
1016 DBusError *error)
1017 {
1018 return fill_group_info (info, gid, NULL, error);
1019 }
1020
1029 dbus_bool_t
1030 _dbus_parse_unix_user_from_config (const DBusString *username,
1031 dbus_uid_t *uid_p)
1032 {
1033 return _dbus_get_user_id (username, uid_p);
1034
1035 }
1036
1045 dbus_bool_t
1046 _dbus_parse_unix_group_from_config (const DBusString *groupname,
1047 dbus_gid_t *gid_p)
1048 {
1049 return _dbus_get_group_id (groupname, gid_p);
1050 }
1051
1062 dbus_bool_t
1063 _dbus_unix_groups_from_uid (dbus_uid_t uid,
1064 dbus_gid_t **group_ids,
1065 int *n_group_ids)
1066 {
1067 return _dbus_groups_from_uid (uid, group_ids, n_group_ids);
1068 }
1069
1079 dbus_bool_t
1080 _dbus_unix_user_is_at_console (dbus_uid_t uid,
1081 DBusError *error)
1082 {
1083 return _dbus_is_console_user (uid, error);
1084
1085 }
1086
1094 dbus_bool_t
1095 _dbus_unix_user_is_process_owner (dbus_uid_t uid)
1096 {
1097 return uid == _dbus_geteuid ();
1098 }
1099
1107 dbus_bool_t
1108 _dbus_windows_user_is_process_owner (const char *windows_sid)
1109 {
1110 return FALSE;
1111 }
1112 /* End of DBusInternalsUtils functions */
1114
1126 dbus_bool_t
1127 _dbus_string_get_dirname (const DBusString *filename,
1128 DBusString *dirname)
1129 {
1130 int sep;
1131
1132 _dbus_assert (filename != dirname);
1133 _dbus_assert (filename != NULL);
1134 _dbus_assert (dirname != NULL);
1135
1136 /* Ignore any separators on the end */
1137 sep = _dbus_string_get_length (filename);
1138 if (sep == 0)
1139 return _dbus_string_append (dirname, "."); /* empty string passed in */
1140
1141 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
1142 --sep;
1143
1144 _dbus_assert (sep >= 0);
1145
1146 if (sep == 0)
1147 return _dbus_string_append (dirname, "/");
1148
1149 /* Now find the previous separator */
1150 _dbus_string_find_byte_backward (filename, sep, '/', &sep);
1151 if (sep < 0)
1152 return _dbus_string_append (dirname, ".");
1153
1154 /* skip multiple separators */
1155 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
1156 --sep;
1157
1158 _dbus_assert (sep >= 0);
1159
1160 if (sep == 0 &&
1161 _dbus_string_get_byte (filename, 0) == '/')
1162 return _dbus_string_append (dirname, "/");
1163 else
1164 return _dbus_string_copy_len (filename, 0, sep - 0,
1165 dirname, _dbus_string_get_length (dirname));
1166 } /* DBusString stuff */
1168
1169 static void
1170 string_squash_nonprintable (DBusString *str)
1171 {
1172 unsigned char *buf;
1173 int i, len;
1174
1175 buf = _dbus_string_get_data (str);
1176 len = _dbus_string_get_length (str);
1177
1178 for (i = 0; i < len; i++)
1179 {
1180 unsigned char c = (unsigned char) buf[i];
1181 if (c == '\0')
1182 buf[i] = ' ';
1183 else if (c < 0x20 || c > 127)
1184 buf[i] = '?';
1185 }
1186 }
1187
1202 dbus_bool_t
1203 _dbus_command_for_pid (unsigned long pid,
1204 DBusString *str,
1205 int max_len,
1206 DBusError *error)
1207 {
1208 /* This is all Linux-specific for now */
1209 DBusString path;
1210 DBusString cmdline;
1211 int fd;
1212
1213 if (!_dbus_string_init (&path))
1214 {
1215 _DBUS_SET_OOM (error);
1216 return FALSE;
1217 }
1218
1219 if (!_dbus_string_init (&cmdline))
1220 {
1221 _DBUS_SET_OOM (error);
1222 _dbus_string_free (&path);
1223 return FALSE;
1224 }
1225
1226 if (!_dbus_string_append_printf (&path, "/proc/%ld/cmdline", pid))
1227 goto oom;
1228
1229 fd = open (_dbus_string_get_const_data (&path), O_RDONLY);
1230 if (fd < 0)
1231 {
1232 dbus_set_error (error,
1233 _dbus_error_from_errno (errno),
1234 "Failed to open \"%s\": %s",
1235 _dbus_string_get_const_data (&path),
1236 _dbus_strerror (errno));
1237 goto fail;
1238 }
1239
1240 if (!_dbus_read (fd, &cmdline, max_len))
1241 {
1242 dbus_set_error (error,
1243 _dbus_error_from_errno (errno),
1244 "Failed to read from \"%s\": %s",
1245 _dbus_string_get_const_data (&path),
1246 _dbus_strerror (errno));
1247 _dbus_close (fd, NULL);
1248 goto fail;
1249 }
1250
1251 if (!_dbus_close (fd, error))
1252 goto fail;
1253
1254 string_squash_nonprintable (&cmdline);
1255
1256 if (!_dbus_string_copy (&cmdline, 0, str, _dbus_string_get_length (str)))
1257 goto oom;
1258
1259 _dbus_string_free (&cmdline);
1260 _dbus_string_free (&path);
1261 return TRUE;
1262 oom:
1263 _DBUS_SET_OOM (error);
1264 fail:
1265 _dbus_string_free (&cmdline);
1266 _dbus_string_free (&path);
1267 return FALSE;
1268 }
1269
1270 /*
1271 * replaces the term DBUS_PREFIX in configure_time_path by the
1272 * current dbus installation directory. On unix this function is a noop
1273 *
1274 * @param configure_time_path
1275 * @return real path
1276 */
1277 const char *
1278 _dbus_replace_install_prefix (const char *configure_time_path)
1279 {
1280 return configure_time_path;
1281 }
1282
1283 #define DBUS_UNIX_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
1284 #define DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services"
1285
1303 dbus_bool_t
1304 _dbus_get_standard_session_servicedirs (DBusList **dirs)
1305 {
1306 const char *xdg_data_home;
1307 const char *xdg_data_dirs;
1308 DBusString servicedir_path;
1309
1310 if (!_dbus_string_init (&servicedir_path))
1311 return FALSE;
1312
1313 xdg_data_home = _dbus_getenv ("XDG_DATA_HOME");
1314 xdg_data_dirs = _dbus_getenv ("XDG_DATA_DIRS");
1315
1316 if (xdg_data_home != NULL)
1317 {
1318 if (!_dbus_string_append (&servicedir_path, xdg_data_home))
1319 goto oom;
1320 }
1321 else
1322 {
1323 const DBusString *homedir;
1324 DBusString local_share;
1325
1326 if (!_dbus_homedir_from_current_process (&homedir))
1327 goto oom;
1328
1329 if (!_dbus_string_append (&servicedir_path, _dbus_string_get_const_data (homedir)))
1330 goto oom;
1331
1332 _dbus_string_init_const (&local_share, "/.local/share");
1333 if (!_dbus_concat_dir_and_file (&servicedir_path, &local_share))
1334 goto oom;
1335 }
1336
1337 if (!_dbus_string_append (&servicedir_path, ":"))
1338 goto oom;
1339
1340 if (xdg_data_dirs != NULL)
1341 {
1342 if (!_dbus_string_append (&servicedir_path, xdg_data_dirs))
1343 goto oom;
1344
1345 if (!_dbus_string_append (&servicedir_path, ":"))
1346 goto oom;
1347 }
1348 else
1349 {
1350 if (!_dbus_string_append (&servicedir_path, "/usr/local/share:/usr/share:"))
1351 goto oom;
1352 }
1353
1354 /*
1355 * add configured datadir to defaults
1356 * this may be the same as an xdg dir
1357 * however the config parser should take
1358 * care of duplicates
1359 */
1360 if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR))
1361 goto oom;
1362
1363 if (!_dbus_split_paths_and_append (&servicedir_path,
1364 DBUS_UNIX_STANDARD_SESSION_SERVICEDIR,
1365 dirs))
1366 goto oom;
1367
1368 _dbus_string_free (&servicedir_path);
1369 return TRUE;
1370
1371 oom:
1372 _dbus_string_free (&servicedir_path);
1373 return FALSE;
1374 }
1375
1376
1395 dbus_bool_t
1396 _dbus_get_standard_system_servicedirs (DBusList **dirs)
1397 {
1398 /*
1399 * DBUS_DATADIR may be the same as one of the standard directories. However,
1400 * the config parser should take care of the duplicates.
1401 *
1402 * Also, append /lib as counterpart of /usr/share on the root
1403 * directory (the root directory does not know /share), in order to
1404 * facilitate early boot system bus activation where /usr might not
1405 * be available.
1406 */
1407 static const char standard_search_path[] =
1408 "/usr/local/share:"
1409 "/usr/share:"
1410 DBUS_DATADIR ":"
1411 "/lib";
1412 DBusString servicedir_path;
1413
1414 _dbus_string_init_const (&servicedir_path, standard_search_path);
1415
1416 return _dbus_split_paths_and_append (&servicedir_path,
1417 DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR,
1418 dirs);
1419 }
1420
1429 dbus_bool_t
1430 _dbus_append_system_config_file (DBusString *str)
1431 {
1432 return _dbus_string_append (str, DBUS_SYSTEM_CONFIG_FILE);
1433 }
1434
1441 dbus_bool_t
1442 _dbus_append_session_config_file (DBusString *str)
1443 {
1444 return _dbus_string_append (str, DBUS_SESSION_CONFIG_FILE);
1445 }
_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:918
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:1430
_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:83
_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:1080
_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:1014
_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:1127
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:684
_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:541
DBusStat
Portable struct with stat() results.
Definition: dbus-sysdeps.h:402
DBUS_ERROR_NOT_SUPPORTED
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn't supported (like ENOSYS on UNIX).
Definition: dbus-protocol.h:364
_dbus_string_append_int
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:110
_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:1046
_dbus_directory_close
void _dbus_directory_close(DBusDirIter *iter)
Closes a directory iteration.
Definition: dbus-sysdeps-util-unix.c:845
_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:135
_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:797
DBusStat::atime
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:409
_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:1304
_dbus_directory_open
DBusDirIter * _dbus_directory_open(const DBusString *filename, DBusError *error)
Open a directory to iterate over.
Definition: dbus-sysdeps-util-unix.c:749
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:175
_dbus_getpid
dbus_pid_t _dbus_getpid(void)
Gets our process ID.
Definition: dbus-sysdeps-unix.c:2409
_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:1203
_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's copied to the d...
Definition: dbus-string.c:1265
DBusGroupInfo::groupname
char * groupname
Group name.
Definition: dbus-sysdeps-unix.h:114
dirent
Definition: dbus-sysdeps-util-win.c:489
DBusSignalHandler
void(* DBusSignalHandler)(int sig)
A UNIX signal handler.
Definition: dbus-sysdeps.h:444
_dbus_getenv
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
Definition: dbus-sysdeps.c:185
_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:614
DBusDirIter
Internals of directory iterator.
Definition: dbus-sysdeps-util-unix.c:735
DBusStat::mode
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:404
dbus_pid_t
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:96
_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:330
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:407
_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:2758
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
DIR
Definition: dbus-sysdeps-util-win.c:498
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
DBusDirIter::d
DIR * d
The DIR* from opendir()
Definition: dbus-sysdeps-util-unix.c:737
_dbus_warn
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
Definition: dbus-internals.c:230
_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:1096
_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:995
_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:1063
DBusStat::ctime
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:411
_dbus_close
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
Definition: dbus-sysdeps-unix.c:2958
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
Definition: dbus-string.c:242
DBUS_GID_UNSET
#define DBUS_GID_UNSET
an invalid GID used to represent an uninitialized dbus_gid_t field
Definition: dbus-sysdeps.h:107
_dbus_file_exists
dbus_bool_t _dbus_file_exists(const char *file)
Checks if a file exists.
Definition: dbus-sysdeps-util-unix.c:628
TRUE
#define TRUE
Expands to "1".
DBusStat::nlink
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:405
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition: dbus-internals.h:145
_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:236
DBusStat::uid
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:406
_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:563
DBUS_ERROR_FAILED
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
Definition: dbus-protocol.h:350
_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:310
_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:111
_dbus_stat
dbus_bool_t _dbus_stat(const DBusString *filename, DBusStat *statbuf, DBusError *error)
stat() wrapper.
Definition: dbus-sysdeps-util-unix.c:701
_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:609
DBusList
A node in a linked list.
Definition: dbus-list.h:34
_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
_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:1095
_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:640
_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:1108
DBUS_ERROR_NO_MEMORY
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
Definition: dbus-protocol.h:352
FALSE
#define FALSE
Expands to "0".
DBusStat::mtime
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:410
_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:785
_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:1357
DBusGroupInfo::gid
dbus_gid_t gid
GID.
Definition: dbus-sysdeps-unix.h:113
_dbus_geteuid
dbus_uid_t _dbus_geteuid(void)
Gets our effective UID.
Definition: dbus-sysdeps-unix.c:2427
dbus_gid_t
unsigned long dbus_gid_t
A group ID.
Definition: dbus-sysdeps.h:100
DBusStat::size
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:408
_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:1030
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition: dbus-internals.c:527
_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:1442
dbus_uid_t
unsigned long dbus_uid_t
A user ID.
Definition: dbus-sysdeps.h:98
_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:1396
_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:625
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