D-Bus  1.13.6
dbus-sysdeps.h
1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-sysdeps.h Wrappers around system/libc features (internal to D-Bus implementation)
3  *
4  * Copyright (C) 2002, 2003 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 #ifndef DBUS_SYSDEPS_H
26 #define DBUS_SYSDEPS_H
27 
28 #ifndef VERSION
29 #warning Please include config.h before dbus-sysdeps.h
30 #include "config.h"
31 #endif
32 
33 #ifdef HAVE_STDINT_H
34 #include <stdint.h>
35 #endif
36 
37 #ifdef HAVE_INTTYPES_H
38 #include <inttypes.h>
39 #endif
40 
41 #include <dbus/dbus-errors.h>
42 #include <dbus/dbus-file.h>
43 #include <dbus/dbus-string.h>
44 
45 /* this is perhaps bogus, but strcmp() etc. are faster if we use the
46  * stuff straight out of string.h, so have this here for now.
47  */
48 #include <string.h>
49 #include <stdarg.h>
50 
51 /* AIX sys/poll.h does #define events reqevents, and other
52  * wonderousness, so must include sys/poll before declaring
53  * DBusPollFD
54  */
55 #ifdef HAVE_POLL
56 #include <sys/poll.h>
57 #endif
58 
59 #ifdef DBUS_WINCE
60 /* Windows CE lacks some system functions (such as errno and clock).
61  We bring them in here. */
62 #include "dbus-sysdeps-wince-glue.h"
63 #endif
64 
65 #ifdef DBUS_WIN
66 #include <ws2tcpip.h>
67 #endif
68 
70 
71 #ifdef DBUS_WIN
72 #define _DBUS_PATH_SEPARATOR ";"
73 #else
74 #define _DBUS_PATH_SEPARATOR ":"
75 #endif
76 
77 /* Forward declarations */
78 
79 
81 typedef struct DBusList DBusList;
82 
84 typedef struct DBusCredentials DBusCredentials;
85 
87 typedef struct DBusPipe DBusPipe;
88 
95 DBUS_PRIVATE_EXPORT
96 void _dbus_abort (void) _DBUS_GNUC_NORETURN;
97 
99 DBUS_PRIVATE_EXPORT
100 const char* _dbus_getenv (const char *varname);
101 DBUS_PRIVATE_EXPORT
103 char ** _dbus_get_environment (void);
104 
106 typedef unsigned long dbus_pid_t;
108 typedef unsigned long dbus_uid_t;
110 typedef unsigned long dbus_gid_t;
111 
113 #define DBUS_PID_UNSET ((dbus_pid_t) -1)
114 
115 #define DBUS_UID_UNSET ((dbus_uid_t) -1)
116 
117 #define DBUS_GID_UNSET ((dbus_gid_t) -1)
118 
120 #define DBUS_PID_FORMAT "%lu"
121 
122 #define DBUS_UID_FORMAT "%lu"
123 
124 #define DBUS_GID_FORMAT "%lu"
125 
129 #ifdef DBUS_WIN
130 
131 typedef struct { SOCKET sock; } DBusSocket;
132 # define DBUS_SOCKET_FORMAT "Iu"
133 # define DBUS_SOCKET_INIT { INVALID_SOCKET }
134 
135 _DBUS_WARN_UNUSED_RESULT
136 static inline SOCKET
137 _dbus_socket_printable (DBusSocket s) { return s.sock; }
138 
139 _DBUS_WARN_UNUSED_RESULT
140 static inline dbus_bool_t
141 _dbus_socket_is_valid (DBusSocket s) { return s.sock != INVALID_SOCKET; }
142 
143 static inline void
144 _dbus_socket_invalidate (DBusSocket *s) { s->sock = INVALID_SOCKET; }
145 
146 _DBUS_WARN_UNUSED_RESULT
147 static inline int
148 _dbus_socket_get_int (DBusSocket s) { return (int)s.sock; }
149 
150 #else /* not DBUS_WIN */
151 
152 typedef struct { int fd; } DBusSocket;
153 # define DBUS_SOCKET_FORMAT "d"
154 # define DBUS_SOCKET_INIT { -1 }
155 
156 _DBUS_WARN_UNUSED_RESULT
157 static inline int
158 _dbus_socket_printable (DBusSocket s) { return s.fd; }
159 
160 _DBUS_WARN_UNUSED_RESULT
161 static inline dbus_bool_t
162 _dbus_socket_is_valid (DBusSocket s) { return s.fd >= 0; }
163 
164 static inline void
165 _dbus_socket_invalidate (DBusSocket *s) { s->fd = -1; }
166 
167 _DBUS_WARN_UNUSED_RESULT
168 static inline int
169 _dbus_socket_get_int (DBusSocket s) { return s.fd; }
170 
171 #endif /* not DBUS_WIN */
172 
173 _DBUS_WARN_UNUSED_RESULT
174 static inline DBusSocket
175 _dbus_socket_get_invalid (void)
176 {
177  DBusSocket s = DBUS_SOCKET_INIT;
178 
179  return s;
180 }
181 
183  DBusError *error);
184 
185 DBUS_PRIVATE_EXPORT
187  DBusError *error);
188 DBUS_PRIVATE_EXPORT
190  DBusString *buffer,
191  int count);
192 DBUS_PRIVATE_EXPORT
194  const DBusString *buffer,
195  int start,
196  int len);
198  const DBusString *buffer1,
199  int start1,
200  int len1,
201  const DBusString *buffer2,
202  int start2,
203  int len2);
204 
206  DBusString *buffer,
207  int count,
208  int *fds,
209  unsigned int *n_fds);
210 DBUS_PRIVATE_EXPORT
211 int _dbus_write_socket_with_unix_fds (DBusSocket fd,
212  const DBusString *buffer,
213  int start,
214  int len,
215  const int *fds,
216  int n_fds);
217 int _dbus_write_socket_with_unix_fds_two (DBusSocket fd,
218  const DBusString *buffer1,
219  int start1,
220  int len1,
221  const DBusString *buffer2,
222  int start2,
223  int len2,
224  const int *fds,
225  int n_fds);
226 
227 DBusSocket _dbus_connect_tcp_socket (const char *host,
228  const char *port,
229  const char *family,
230  DBusError *error);
231 DBusSocket _dbus_connect_tcp_socket_with_nonce (const char *host,
232  const char *port,
233  const char *family,
234  const char *noncefile,
235  DBusError *error);
236 int _dbus_listen_tcp_socket (const char *host,
237  const char *port,
238  const char *family,
239  DBusString *retport,
240  const char **retfamily,
241  DBusSocket **fds_p,
242  DBusError *error);
244 
246  DBusCredentials *credentials,
247  DBusError *error);
249  DBusError *error);
250 
251 typedef enum
252 {
253  DBUS_CREDENTIALS_ADD_FLAGS_USER_DATABASE = (1 << 0),
254  DBUS_CREDENTIALS_ADD_FLAGS_NONE = 0
255 } DBusCredentialsAddFlags;
256 
258  const DBusString *username,
259  DBusCredentialsAddFlags flags,
260  DBusError *error);
261 
263 DBUS_PRIVATE_EXPORT
265 
267  dbus_uid_t *uid_p);
269  dbus_gid_t *gid_p);
271  dbus_gid_t **group_ids,
272  int *n_group_ids);
274  DBusError *error);
276 dbus_bool_t _dbus_windows_user_is_process_owner (const char *windows_sid);
277 
279  DBusCredentials *credentials);
280 
281 dbus_bool_t _dbus_daemon_is_session_bus_address_published (const char *scope);
282 
283 dbus_bool_t _dbus_daemon_publish_session_bus_address (const char* address, const char* shm_name);
284 
285 void _dbus_daemon_unpublish_session_bus_address (void);
286 
288 
292 typedef struct DBusAtomic DBusAtomic;
293 
298 {
299 #ifdef DBUS_WIN
300  volatile long value;
301 #else
302  volatile dbus_int32_t value;
303 #endif
304 };
305 
306 DBUS_PRIVATE_EXPORT
307 dbus_int32_t _dbus_atomic_inc (DBusAtomic *atomic);
308 DBUS_PRIVATE_EXPORT
309 dbus_int32_t _dbus_atomic_dec (DBusAtomic *atomic);
310 DBUS_PRIVATE_EXPORT
311 dbus_int32_t _dbus_atomic_get (DBusAtomic *atomic);
312 
313 #ifdef DBUS_WIN
314 
315 /* On Windows, you can only poll sockets. We emulate Unix poll() using
316  * select(), so it doesn't matter what precise type we put in DBusPollFD;
317  * use DBusSocket so that the compiler can check we are doing it right.
318  */
319 typedef DBusSocket DBusPollable;
320 # define DBUS_POLLABLE_FORMAT "Iu"
321 
322 static inline DBusPollable
323 _dbus_socket_get_pollable (DBusSocket s) { return s; }
324 
325 static inline SOCKET
326 _dbus_pollable_printable (DBusPollable p) { return p.sock; }
327 
328 static inline dbus_bool_t
329 _dbus_pollable_is_valid (DBusPollable p) { return _dbus_socket_is_valid (p); }
330 
331 static inline void
332 _dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
333 
334 static inline dbus_bool_t
335 _dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a.sock == b.sock; }
336 
337 #else /* !DBUS_WIN */
338 
339 /* On Unix, you can poll sockets, pipes, etc., and we must put exactly
340  * "int" in DBusPollFD because we're relying on its layout exactly matching
341  * struct pollfd. (This is silly, and one day we should use a better
342  * abstraction.)
343  */
344 typedef int DBusPollable;
345 # define DBUS_POLLABLE_FORMAT "d"
346 
347 static inline DBusPollable
348 _dbus_socket_get_pollable (DBusSocket s) { return s.fd; }
349 
350 static inline int
351 _dbus_pollable_printable (DBusPollable p) { return p; }
352 
353 static inline dbus_bool_t
354 _dbus_pollable_is_valid (DBusPollable p) { return p >= 0; }
355 
356 static inline void
357 _dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
358 
359 static inline dbus_bool_t
360 _dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a == b; }
361 
362 #endif /* !DBUS_WIN */
363 
364 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)
365 
369 typedef struct pollfd DBusPollFD;
370 
372 #define _DBUS_POLLIN POLLIN
373 
374 #define _DBUS_POLLPRI POLLPRI
375 
376 #define _DBUS_POLLOUT POLLOUT
377 
378 #define _DBUS_POLLERR POLLERR
379 
380 #define _DBUS_POLLHUP POLLHUP
381 
382 #define _DBUS_POLLNVAL POLLNVAL
383 #else
384 /* Emulate poll() via select(). Because we aren't really going to call
385  * poll(), any similarly-shaped struct is acceptable, and any power of 2
386  * will do for the events/revents; these values happen to match Linux
387  * and *BSD. */
388 typedef struct
389 {
390  DBusPollable fd;
391  short events;
392  short revents;
393 } DBusPollFD;
394 
396 #define _DBUS_POLLIN 0x0001
397 
398 #define _DBUS_POLLPRI 0x0002
399 
400 #define _DBUS_POLLOUT 0x0004
401 
402 #define _DBUS_POLLERR 0x0008
403 
404 #define _DBUS_POLLHUP 0x0010
405 
406 #define _DBUS_POLLNVAL 0x0020
407 #endif
408 
409 DBUS_PRIVATE_EXPORT
410 int _dbus_poll (DBusPollFD *fds,
411  int n_fds,
412  int timeout_milliseconds);
413 
414 DBUS_PRIVATE_EXPORT
415 void _dbus_sleep_milliseconds (int milliseconds);
416 
417 DBUS_PRIVATE_EXPORT
418 void _dbus_get_monotonic_time (long *tv_sec,
419  long *tv_usec);
420 
421 DBUS_PRIVATE_EXPORT
422 void _dbus_get_real_time (long *tv_sec,
423  long *tv_usec);
424 
428 DBUS_PRIVATE_EXPORT
430  DBusError *error);
431 DBUS_PRIVATE_EXPORT
433  DBusError *error);
434 DBUS_PRIVATE_EXPORT
436  DBusError *error);
437 
438 DBUS_PRIVATE_EXPORT
440  const DBusString *next_component);
442  DBusString *dirname);
443 DBUS_PRIVATE_EXPORT
445 
449  DBusError *error);
450 
453 
455 typedef struct DBusDirIter DBusDirIter;
456 
458  DBusError *error);
460  DBusString *filename,
461  DBusError *error);
463 
465  DBusError *error);
466 
467 DBUS_PRIVATE_EXPORT
468 const char* _dbus_get_tmpdir (void);
469 
473 _DBUS_WARN_UNUSED_RESULT
475  int n_bytes,
476  DBusError *error);
478  int n_bytes,
479  DBusError *error);
480 DBUS_PRIVATE_EXPORT
482  int n_bytes,
483  DBusError *error);
484 
485 DBUS_PRIVATE_EXPORT
486 const char* _dbus_error_from_errno (int error_number);
487 DBUS_PRIVATE_EXPORT
488 const char* _dbus_error_from_system_errno (void);
489 
490 int _dbus_get_low_level_socket_errno (void);
491 
492 int _dbus_save_socket_errno (void);
493 void _dbus_restore_socket_errno (int saved_errno);
494 void _dbus_set_errno_to_zero (void);
500 DBUS_PRIVATE_EXPORT
501 const char* _dbus_strerror_from_errno (void);
502 
503 void _dbus_disable_sigpipe (void);
504 
505 DBUS_PRIVATE_EXPORT
506 void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
507 
508 DBUS_PRIVATE_EXPORT
509 int _dbus_printf_string_upper_bound (const char *format,
510  va_list args) _DBUS_GNUC_PRINTF (1, 0);
511 
512 #ifdef DBUS_ENABLE_VERBOSE_MODE
513 DBUS_PRIVATE_EXPORT
514 void _dbus_print_thread (void);
515 #endif
516 
520 typedef struct
521 {
522  unsigned long mode;
523  unsigned long nlink;
526  unsigned long size;
527  unsigned long atime;
528  unsigned long mtime;
529  unsigned long ctime;
530 } DBusStat;
531 
532 dbus_bool_t _dbus_stat (const DBusString *filename,
533  DBusStat *statbuf,
534  DBusError *error);
535 DBUS_PRIVATE_EXPORT
537  DBusSocket *fd2,
538  dbus_bool_t blocking,
539  DBusError *error);
540 
541 DBUS_PRIVATE_EXPORT
542 void _dbus_print_backtrace (void);
543 
545  DBusPipe *print_pid_pipe,
546  DBusError *error,
547  dbus_bool_t keep_umask);
548 
549 dbus_bool_t _dbus_verify_daemon_user (const char *user);
550 dbus_bool_t _dbus_change_to_daemon_user (const char *user,
551  DBusError *error);
552 
554  DBusPipe *print_pid_pipe,
555  dbus_pid_t pid_to_write,
556  DBusError *error);
557 
558 dbus_bool_t _dbus_command_for_pid (unsigned long pid,
559  DBusString *str,
560  int max_len,
561  DBusError *error);
562 
563 dbus_bool_t _dbus_user_at_console (const char *username,
564  DBusError *error);
565 
566 typedef enum {
567  DBUS_LOG_FLAGS_STDERR = (1 << 0),
568  DBUS_LOG_FLAGS_SYSTEM_LOG = (1 << 1)
569 } DBusLogFlags;
570 
571 DBUS_PRIVATE_EXPORT
572 void _dbus_init_system_log (const char *tag,
573  DBusLogFlags flags);
574 
575 typedef enum {
576  DBUS_SYSTEM_LOG_INFO,
577  DBUS_SYSTEM_LOG_WARNING,
578  DBUS_SYSTEM_LOG_SECURITY,
579  DBUS_SYSTEM_LOG_ERROR
580 } DBusSystemLogSeverity;
581 
582 DBUS_PRIVATE_EXPORT
583 void _dbus_log (DBusSystemLogSeverity severity,
584  const char *msg,
585  ...) _DBUS_GNUC_PRINTF (2, 3);
586 DBUS_PRIVATE_EXPORT
587 void _dbus_logv (DBusSystemLogSeverity severity,
588  const char *msg,
589  va_list args) _DBUS_GNUC_PRINTF (2, 0);
590 
591 /* Define DBUS_VA_COPY() to do the right thing for copying va_list variables.
592  * config.h may have already defined DBUS_VA_COPY as va_copy or __va_copy.
593  */
594 #if !defined (DBUS_VA_COPY)
595 # if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
596 # define DBUS_VA_COPY(ap1, ap2) (*(ap1) = *(ap2))
597 # elif defined (DBUS_VA_COPY_AS_ARRAY)
598 # define DBUS_VA_COPY(ap1, ap2) memcpy ((ap1), (ap2), sizeof (va_list))
599 # else /* va_list is a pointer */
600 # define DBUS_VA_COPY(ap1, ap2) ((ap1) = (ap2))
601 # endif /* va_list is a pointer */
602 #endif /* !DBUS_VA_COPY */
603 
604 
609 #define _DBUS_BYTE_OF_PRIMITIVE(p, i) \
610  (((const char*)&(p))[(i)])
611 
616 #define _DBUS_DOUBLES_BITWISE_EQUAL(a, b) \
617  (_DBUS_BYTE_OF_PRIMITIVE (a, 0) == _DBUS_BYTE_OF_PRIMITIVE (b, 0) && \
618  _DBUS_BYTE_OF_PRIMITIVE (a, 1) == _DBUS_BYTE_OF_PRIMITIVE (b, 1) && \
619  _DBUS_BYTE_OF_PRIMITIVE (a, 2) == _DBUS_BYTE_OF_PRIMITIVE (b, 2) && \
620  _DBUS_BYTE_OF_PRIMITIVE (a, 3) == _DBUS_BYTE_OF_PRIMITIVE (b, 3) && \
621  _DBUS_BYTE_OF_PRIMITIVE (a, 4) == _DBUS_BYTE_OF_PRIMITIVE (b, 4) && \
622  _DBUS_BYTE_OF_PRIMITIVE (a, 5) == _DBUS_BYTE_OF_PRIMITIVE (b, 5) && \
623  _DBUS_BYTE_OF_PRIMITIVE (a, 6) == _DBUS_BYTE_OF_PRIMITIVE (b, 6) && \
624  _DBUS_BYTE_OF_PRIMITIVE (a, 7) == _DBUS_BYTE_OF_PRIMITIVE (b, 7))
625 
626 dbus_bool_t _dbus_get_autolaunch_address (const char *scope,
627  DBusString *address,
628  DBusError *error);
629 
631  DBusString *address,
632  DBusError *error);
633 
637 typedef union DBusGUID DBusGUID;
638 
639 DBUS_PRIVATE_EXPORT
641  dbus_bool_t create_if_not_found,
642  DBusError *error);
643 
650 
655 
660 
661 DBUS_PRIVATE_EXPORT
663  const char *suffix,
664  DBusList **dir_list);
665 
666 unsigned long _dbus_pid_for_log (void);
667 
668 /* FIXME move back to dbus-sysdeps-unix.h probably -
669  * the PID file handling just needs a little more abstraction
670  * in the bus daemon first.
671  */
672 DBUS_PRIVATE_EXPORT
673 dbus_pid_t _dbus_getpid (void);
674 
675 DBUS_PRIVATE_EXPORT
676 dbus_uid_t _dbus_getuid (void);
677 
678 DBUS_PRIVATE_EXPORT
679 void _dbus_flush_caches (void);
680 
682 
683 /* Do not set this too high: it is a denial-of-service risk.
684  * See <https://bugs.freedesktop.org/show_bug.cgi?id=82820>
685  *
686  * (This needs to be in the non-Unix-specific header so that
687  * the config-parser can use it.)
688  */
689 #define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16
690 
691 typedef struct DBusRLimit DBusRLimit;
692 
693 DBusRLimit *_dbus_rlimit_save_fd_limit (DBusError *error);
694 dbus_bool_t _dbus_rlimit_raise_fd_limit_if_privileged (unsigned int desired,
695  DBusError *error);
696 dbus_bool_t _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
697  DBusError *error);
698 void _dbus_rlimit_free (DBusRLimit *lim);
699 
700 void _dbus_daemon_report_ready (void);
702 void _dbus_daemon_report_reloaded (void);
703 void _dbus_daemon_report_stopping (void);
704 
705 dbus_bool_t _dbus_inet_sockaddr_to_string (const void *sockaddr_pointer,
706  size_t len,
707  char *string,
708  size_t string_len,
709  const char **family_name,
710  dbus_uint16_t *port,
711  DBusError *error);
712 void _dbus_set_error_with_inet_sockaddr (DBusError *error,
713  const void *sockaddr_pointer,
714  size_t len,
715  const char *description,
716  int saved_errno);
717 void _dbus_combine_tcp_errors (DBusList **sources,
718  const char *summary,
719  const char *host,
720  const char *port,
721  DBusError *dest);
722 
726 
727 
728 #ifdef DBUS_WIN
729 #include "dbus-sysdeps-win.h"
730 #endif
731 
732 #endif /* DBUS_SYSDEPS_H */
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:297
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:236
volatile dbus_int32_t value
Value of the atomic integer.
Definition: dbus-sysdeps.h:302
dbus_bool_t _dbus_check_dir_is_private_to_user(DBusString *dir, DBusError *error)
Checks to make sure the given directory is private to the user.
dbus_bool_t _dbus_get_is_errno_enomem(int e)
See if errno is ENOMEM.
Definition: dbus-sysdeps.c:714
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we&#39;re running on from the dbus configuration.
void _dbus_abort(void)
Aborts the program with SIGABRT (dumping core).
Definition: dbus-sysdeps.c:87
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_ensure_directory(const DBusString *filename, DBusError *error)
Creates a directory; succeeds if the directory is created or already existed.
#define DBUS_BEGIN_DECLS
Macro used prior to declaring functions in the D-Bus header files.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()).
Portable struct with stat() results.
Definition: dbus-sysdeps.h:520
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.
DBUS_PRIVATE_EXPORT void _dbus_log(DBusSystemLogSeverity severity, const char *msg,...)
Log a message to the system log file (e.g.
Definition: dbus-sysdeps.c:770
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_path_is_absolute(const DBusString *filename)
Checks whether the filename is an absolute path.
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:527
dbus_bool_t _dbus_check_setuid(void)
NOTE: If you modify this function, please also consider making the corresponding change in GLib...
dbus_bool_t _dbus_threads_init_platform_specific(void)
Initialize threads as in dbus_threads_init_default(), appropriately for the platform.
dbus_bool_t _dbus_get_standard_session_servicedirs(DBusList **dirs)
Returns the standard directories for a session bus to look for service activation files...
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
DBUS_PRIVATE_EXPORT dbus_pid_t _dbus_getpid(void)
Gets our process ID.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
DBUS_PRIVATE_EXPORT int _dbus_read_socket(DBusSocket fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
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.
dbus_bool_t _dbus_get_system_config_file(DBusString *str)
Get the absolute path of the system.conf file (there is no system bus on Windows so this can just ret...
short events
Events to poll for.
Definition: dbus-sysdeps.h:391
dbus_bool_t _dbus_send_credentials_socket(DBusSocket server_fd, DBusError *error)
Sends a single nul byte with our UNIX credentials as ancillary data.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus.
dbus_bool_t _dbus_clearenv(void)
Wrapper for clearenv().
Definition: dbus-sysdeps.c:211
dbus_bool_t _dbus_credentials_add_from_user(DBusCredentials *credentials, const DBusString *username, DBusCredentialsAddFlags flags, DBusError *error)
Adds the credentials corresponding to the given username.
Internals of directory iterator.
dbus_bool_t _dbus_user_at_console(const char *username, DBusError *error)
Checks if user is at the console.
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:522
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:106
Socket interface.
Definition: dbus-sysdeps.h:152
void _dbus_threads_unlock_platform_specific(void)
Undo _dbus_threads_lock_platform_specific().
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_append_user_from_current_process(DBusString *str)
Append to the string the identity we would like to have when we authenticate, on UNIX this is the cur...
void _dbus_threads_lock_platform_specific(void)
Lock a static mutex used to protect _dbus_threads_init_platform_specific().
dbus_gid_t gid
Group owning file.
Definition: dbus-sysdeps.h:525
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(int e)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted) ...
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
dbus_bool_t _dbus_get_session_config_file(DBusString *str)
Get the absolute path of the session.conf file.
void _dbus_daemon_report_stopping(void)
Report to a service manager that the daemon calling this function is shutting down.
_DBUS_WARN_UNUSED_RESULT dbus_bool_t _dbus_generate_random_bytes_buffer(char *buffer, int n_bytes, DBusError *error)
Random numbers.
Definition: dbus-sysdeps.c:525
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).
int _dbus_write_socket_two(DBusSocket fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write_two() but only works on sockets and is thus available on Windows.
DBusSocket _dbus_accept(DBusSocket listen_fd)
Accepts a connection on a listening socket.
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
DBUS_PRIVATE_EXPORT void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
dbus_bool_t _dbus_change_to_daemon_user(const char *user, DBusError *error)
Changes the user and group the bus is running as.
dbus_bool_t _dbus_append_keyring_directory_for_credentials(DBusString *directory, DBusCredentials *credentials)
Appends the directory in which a keyring for the given credentials should be stored.
dbus_bool_t _dbus_read_credentials_socket(DBusSocket client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
directory interface
dbus_bool_t _dbus_verify_daemon_user(const char *user)
Verify that after the fork we can successfully change to this user.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
Object representing an exception.
Definition: dbus-errors.h:48
DBUS_PRIVATE_EXPORT void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
dbus_bool_t _dbus_stat(const DBusString *filename, DBusStat *statbuf, DBusError *error)
stat() wrapper.
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.
DBUS_PRIVATE_EXPORT const char * _dbus_error_from_system_errno(void)
Converts the current system errno value into a DBusError name.
Definition: dbus-sysdeps.c:691
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.
dbus_bool_t _dbus_string_get_dirname(const DBusString *filename, DBusString *dirname)
Get the directory name from a complete filename.
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.
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, unsigned int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:529
DBUS_PRIVATE_EXPORT void _dbus_flush_caches(void)
Called when the bus daemon is signaled to reload its configuration; any caches should be nuked...
DBUS_PRIVATE_EXPORT const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR, TMP, and TEMP in that order.
dbus_bool_t _dbus_credentials_add_from_current_process(DBusCredentials *credentials)
Adds the most important credentials of the current process (the uid and pid) to the passed-in credent...
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:523
DBusPollable fd
File descriptor.
Definition: dbus-sysdeps.h:390
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:524
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.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_generate_random_ascii(DBusString *str, int n_bytes, DBusError *error)
Generates the given number of random bytes, where the bytes are chosen from the alphanumeric ASCII su...
Definition: dbus-sysdeps.c:559
DBUS_PRIVATE_EXPORT void _dbus_exit(int code) _DBUS_GNUC_NORETURN
Exit the process, returning the given value.
unsigned long _dbus_pid_for_log(void)
The only reason this is separate from _dbus_getpid() is to allow it on Windows for logging but not fo...
void _dbus_directory_close(DBusDirIter *iter)
Closes a directory iteration.
DBUS_PRIVATE_EXPORT const char * _dbus_strerror_from_errno(void)
Get error message from errno.
Definition: dbus-sysdeps.c:758
DBusSocket _dbus_connect_tcp_socket(const char *host, const char *port, const char *family, DBusError *error)
Creates a socket and connects to a socket at the given host and port.
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
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.
A node in a linked list.
Definition: dbus-list.h:34
DBUS_PRIVATE_EXPORT dbus_uid_t _dbus_getuid(void)
Gets our UID.
DBUS_PRIVATE_EXPORT void _dbus_init_system_log(const char *tag, DBusLogFlags flags)
Initialize the system log.
void _dbus_daemon_report_ready(void)
Report to a service manager that the daemon calling this function is ready for use.
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes, DBusError *error)
Generates the given number of securely random bytes, using the best mechanism we can come up with...
dbus_bool_t _dbus_replace_install_prefix(DBusString *path)
Replace the DBUS_PREFIX in the given path, in-place, by the current D-Bus installation directory...
dbus_bool_t _dbus_set_socket_nonblocking(DBusSocket fd, DBusError *error)
Sets a file descriptor to be nonblocking.
char ** _dbus_get_environment(void)
Gets a NULL-terminated list of key=value pairs from the environment.
dbus_bool_t _dbus_get_is_errno_epipe(int e)
See if errno is EPIPE.
Definition: dbus-sysdeps.c:734
void _dbus_daemon_report_reloaded(void)
Report to a service manager that the daemon calling this function is reloading configuration.
dbus_bool_t _dbus_set_up_transient_session_servicedirs(DBusList **dirs, DBusError *error)
Returns the standard directories for a session bus to look for transient service activation files...
dbus_bool_t _dbus_lookup_session_address(dbus_bool_t *supported, DBusString *address, DBusError *error)
Determines the address of the session bus by querying a platform-specific method. ...
DBUS_PRIVATE_EXPORT void _dbus_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g.
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.
dbus_bool_t _dbus_get_is_errno_eintr(int e)
See if errno is EINTR.
Definition: dbus-sysdeps.c:724
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:528
void _dbus_daemon_report_reloading(void)
Report to a service manager that the daemon calling this function is reloading configuration.
DBUS_PRIVATE_EXPORT int _dbus_write_socket(DBusSocket fd, const DBusString *buffer, int start, int len)
Like _dbus_write(), but only supports sockets and is thus available on Windows.
DBusDirIter * _dbus_directory_open(const DBusString *filename, DBusError *error)
Open a directory to iterate over.
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
DBUS_PRIVATE_EXPORT void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
DBUS_PRIVATE_EXPORT 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:599
unsigned long dbus_gid_t
A group ID.
Definition: dbus-sysdeps.h:110
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:526
DBUS_PRIVATE_EXPORT int _dbus_printf_string_upper_bound(const char *format, va_list args)
Measure the length of the given format string and arguments, not including the terminating nul...
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, const char **retfamily, DBusSocket **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd)
Checks whether file descriptors may be passed via the socket.
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
Definition: dbus-sysdeps.c:195
unsigned long dbus_uid_t
A user ID.
Definition: dbus-sysdeps.h:108
DBUS_PRIVATE_EXPORT int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
short revents
Events that occurred.
Definition: dbus-sysdeps.h:392
dbus_bool_t _dbus_get_is_errno_etoomanyrefs(int e)
See if errno is ETOOMANYREFS.
Definition: dbus-sysdeps.c:744
void _dbus_set_errno_to_zero(void)
Assign 0 to the global errno variable.
Definition: dbus-sysdeps.c:700
dbus_bool_t _dbus_get_standard_system_servicedirs(DBusList **dirs)
Returns the standard directories for a system bus to look for service activation files.
dbus_bool_t _dbus_directory_get_next_file(DBusDirIter *iter, DBusString *filename, DBusError *error)
Get next file in the directory.
DBUS_PRIVATE_EXPORT void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
#define DBUS_END_DECLS
Macro used after declaring functions in the D-Bus header files.