D-Bus  1.10.24
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 void _dbus_abort (void) _DBUS_GNUC_NORETURN;
96 
98 DBUS_PRIVATE_EXPORT
99 const char* _dbus_getenv (const char *varname);
100 DBUS_PRIVATE_EXPORT
102 char ** _dbus_get_environment (void);
103 
105 typedef unsigned long dbus_pid_t;
107 typedef unsigned long dbus_uid_t;
109 typedef unsigned long dbus_gid_t;
110 
112 #define DBUS_PID_UNSET ((dbus_pid_t) -1)
113 
114 #define DBUS_UID_UNSET ((dbus_uid_t) -1)
115 
116 #define DBUS_GID_UNSET ((dbus_gid_t) -1)
117 
119 #define DBUS_PID_FORMAT "%lu"
120 
121 #define DBUS_UID_FORMAT "%lu"
122 
123 #define DBUS_GID_FORMAT "%lu"
124 
128 #ifdef DBUS_WIN
129 
130 typedef struct { SOCKET sock; } DBusSocket;
131 # define DBUS_SOCKET_FORMAT "Iu"
132 # define DBUS_SOCKET_INIT { INVALID_SOCKET }
133 
134 static inline SOCKET
135 _dbus_socket_printable (DBusSocket s) { return s.sock; }
136 
137 static inline dbus_bool_t
138 _dbus_socket_is_valid (DBusSocket s) { return s.sock != INVALID_SOCKET; }
139 
140 static inline void
141 _dbus_socket_invalidate (DBusSocket *s) { s->sock = INVALID_SOCKET; }
142 
143 static inline int
144 _dbus_socket_get_int (DBusSocket s) { return (int)s.sock; }
145 
146 #else /* not DBUS_WIN */
147 
148 typedef struct { int fd; } DBusSocket;
149 # define DBUS_SOCKET_FORMAT "d"
150 # define DBUS_SOCKET_INIT { -1 }
151 
152 static inline int
153 _dbus_socket_printable (DBusSocket s) { return s.fd; }
154 
155 static inline dbus_bool_t
156 _dbus_socket_is_valid (DBusSocket s) { return s.fd >= 0; }
157 
158 static inline void
159 _dbus_socket_invalidate (DBusSocket *s) { s->fd = -1; }
160 
161 static inline int
162 _dbus_socket_get_int (DBusSocket s) { return s.fd; }
163 
164 #endif /* not DBUS_WIN */
165 
166 static inline DBusSocket
167 _dbus_socket_get_invalid (void)
168 {
169  DBusSocket s = DBUS_SOCKET_INIT;
170 
171  return s;
172 }
173 
175  DBusError *error);
176 
177 DBUS_PRIVATE_EXPORT
179  DBusError *error);
180 DBUS_PRIVATE_EXPORT
182  DBusString *buffer,
183  int count);
184 DBUS_PRIVATE_EXPORT
186  const DBusString *buffer,
187  int start,
188  int len);
190  const DBusString *buffer1,
191  int start1,
192  int len1,
193  const DBusString *buffer2,
194  int start2,
195  int len2);
196 
198  DBusString *buffer,
199  int count,
200  int *fds,
201  int *n_fds);
202 DBUS_PRIVATE_EXPORT
203 int _dbus_write_socket_with_unix_fds (DBusSocket fd,
204  const DBusString *buffer,
205  int start,
206  int len,
207  const int *fds,
208  int n_fds);
209 int _dbus_write_socket_with_unix_fds_two (DBusSocket fd,
210  const DBusString *buffer1,
211  int start1,
212  int len1,
213  const DBusString *buffer2,
214  int start2,
215  int len2,
216  const int *fds,
217  int n_fds);
218 
219 DBusSocket _dbus_connect_tcp_socket (const char *host,
220  const char *port,
221  const char *family,
222  DBusError *error);
223 DBusSocket _dbus_connect_tcp_socket_with_nonce (const char *host,
224  const char *port,
225  const char *family,
226  const char *noncefile,
227  DBusError *error);
228 int _dbus_listen_tcp_socket (const char *host,
229  const char *port,
230  const char *family,
231  DBusString *retport,
232  DBusSocket **fds_p,
233  DBusError *error);
235 
237  DBusCredentials *credentials,
238  DBusError *error);
240  DBusError *error);
241 
243  const DBusString *username);
245 DBUS_PRIVATE_EXPORT
247 
249  dbus_uid_t *uid_p);
251  dbus_gid_t *gid_p);
253  dbus_gid_t **group_ids,
254  int *n_group_ids);
256  DBusError *error);
258 dbus_bool_t _dbus_windows_user_is_process_owner (const char *windows_sid);
259 
261  DBusCredentials *credentials);
262 
263 dbus_bool_t _dbus_daemon_is_session_bus_address_published (const char *scope);
264 
265 dbus_bool_t _dbus_daemon_publish_session_bus_address (const char* address, const char* shm_name);
266 
267 void _dbus_daemon_unpublish_session_bus_address (void);
268 
270 
274 typedef struct DBusAtomic DBusAtomic;
275 
280 {
281 #ifdef DBUS_WIN
282  volatile long value;
283 #else
284  volatile dbus_int32_t value;
285 #endif
286 };
287 
288 /* The value we get from autofoo is in the form of a cpp expression;
289  * convert that to a conventional defined/undef switch. (We can't get
290  * the conventional defined/undef because of multiarch builds only running
291  * ./configure once, on Darwin.) */
292 #if DBUS_HAVE_ATOMIC_INT_COND
293 # define DBUS_HAVE_ATOMIC_INT 1
294 #else
295 # undef DBUS_HAVE_ATOMIC_INT
296 #endif
297 
298 DBUS_PRIVATE_EXPORT
299 dbus_int32_t _dbus_atomic_inc (DBusAtomic *atomic);
300 DBUS_PRIVATE_EXPORT
301 dbus_int32_t _dbus_atomic_dec (DBusAtomic *atomic);
302 DBUS_PRIVATE_EXPORT
303 dbus_int32_t _dbus_atomic_get (DBusAtomic *atomic);
304 
305 #ifdef DBUS_WIN
306 
307 /* On Windows, you can only poll sockets. We emulate Unix poll() using
308  * select(), so it doesn't matter what precise type we put in DBusPollFD;
309  * use DBusSocket so that the compiler can check we are doing it right.
310  */
311 typedef DBusSocket DBusPollable;
312 # define DBUS_POLLABLE_FORMAT "Iu"
313 
314 static inline DBusPollable
315 _dbus_socket_get_pollable (DBusSocket s) { return s; }
316 
317 static inline SOCKET
318 _dbus_pollable_printable (DBusPollable p) { return p.sock; }
319 
320 static inline dbus_bool_t
321 _dbus_pollable_is_valid (DBusPollable p) { return _dbus_socket_is_valid (p); }
322 
323 static inline void
324 _dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
325 
326 static inline dbus_bool_t
327 _dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a.sock == b.sock; }
328 
329 #else /* !DBUS_WIN */
330 
331 /* On Unix, you can poll sockets, pipes, etc., and we must put exactly
332  * "int" in DBusPollFD because we're relying on its layout exactly matching
333  * struct pollfd. (This is silly, and one day we should use a better
334  * abstraction.)
335  */
336 typedef int DBusPollable;
337 # define DBUS_POLLABLE_FORMAT "d"
338 
339 static inline DBusPollable
340 _dbus_socket_get_pollable (DBusSocket s) { return s.fd; }
341 
342 static inline int
343 _dbus_pollable_printable (DBusPollable p) { return p; }
344 
345 static inline dbus_bool_t
346 _dbus_pollable_is_valid (DBusPollable p) { return p >= 0; }
347 
348 static inline void
349 _dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
350 
351 static inline dbus_bool_t
352 _dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a == b; }
353 
354 #endif /* !DBUS_WIN */
355 
356 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)
357 
361 typedef struct pollfd DBusPollFD;
362 
364 #define _DBUS_POLLIN POLLIN
365 
366 #define _DBUS_POLLPRI POLLPRI
367 
368 #define _DBUS_POLLOUT POLLOUT
369 
370 #define _DBUS_POLLERR POLLERR
371 
372 #define _DBUS_POLLHUP POLLHUP
373 
374 #define _DBUS_POLLNVAL POLLNVAL
375 #else
376 /* Emulate poll() via select(). Because we aren't really going to call
377  * poll(), any similarly-shaped struct is acceptable, and any power of 2
378  * will do for the events/revents; these values happen to match Linux
379  * and *BSD. */
380 typedef struct
381 {
382  DBusPollable fd;
383  short events;
384  short revents;
385 } DBusPollFD;
386 
388 #define _DBUS_POLLIN 0x0001
389 
390 #define _DBUS_POLLPRI 0x0002
391 
392 #define _DBUS_POLLOUT 0x0004
393 
394 #define _DBUS_POLLERR 0x0008
395 
396 #define _DBUS_POLLHUP 0x0010
397 
398 #define _DBUS_POLLNVAL 0x0020
399 #endif
400 
401 DBUS_PRIVATE_EXPORT
402 int _dbus_poll (DBusPollFD *fds,
403  int n_fds,
404  int timeout_milliseconds);
405 
406 DBUS_PRIVATE_EXPORT
407 void _dbus_sleep_milliseconds (int milliseconds);
408 
409 DBUS_PRIVATE_EXPORT
410 void _dbus_get_monotonic_time (long *tv_sec,
411  long *tv_usec);
412 
413 DBUS_PRIVATE_EXPORT
414 void _dbus_get_real_time (long *tv_sec,
415  long *tv_usec);
416 
420 DBUS_PRIVATE_EXPORT
422  DBusError *error);
423 DBUS_PRIVATE_EXPORT
425  DBusError *error);
426 DBUS_PRIVATE_EXPORT
428  DBusError *error);
429 
430 DBUS_PRIVATE_EXPORT
432  const DBusString *next_component);
434  DBusString *dirname);
435 DBUS_PRIVATE_EXPORT
437 
440 
443 
445 typedef struct DBusDirIter DBusDirIter;
446 
448  DBusError *error);
450  DBusString *filename,
451  DBusError *error);
453 
455  DBusError *error);
456 
457 DBUS_PRIVATE_EXPORT
458 const char* _dbus_get_tmpdir (void);
459 
463 _DBUS_GNUC_WARN_UNUSED_RESULT
465  int n_bytes,
466  DBusError *error);
468  int n_bytes,
469  DBusError *error);
470 DBUS_PRIVATE_EXPORT
472  int n_bytes,
473  DBusError *error);
474 
475 DBUS_PRIVATE_EXPORT
476 const char* _dbus_error_from_errno (int error_number);
477 DBUS_PRIVATE_EXPORT
478 const char* _dbus_error_from_system_errno (void);
479 
480 int _dbus_save_socket_errno (void);
481 void _dbus_restore_socket_errno (int saved_errno);
482 void _dbus_set_errno_to_zero (void);
488 DBUS_PRIVATE_EXPORT
489 const char* _dbus_strerror_from_errno (void);
490 
491 void _dbus_disable_sigpipe (void);
492 
493 DBUS_PRIVATE_EXPORT
494 void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
495 
496 DBUS_PRIVATE_EXPORT
497 int _dbus_printf_string_upper_bound (const char *format,
498  va_list args);
499 
500 
504 typedef struct
505 {
506  unsigned long mode;
507  unsigned long nlink;
508  dbus_uid_t uid;
509  dbus_gid_t gid;
510  unsigned long size;
511  unsigned long atime;
512  unsigned long mtime;
513  unsigned long ctime;
514 } DBusStat;
515 
516 dbus_bool_t _dbus_stat (const DBusString *filename,
517  DBusStat *statbuf,
518  DBusError *error);
519 DBUS_PRIVATE_EXPORT
521  DBusSocket *fd2,
522  dbus_bool_t blocking,
523  DBusError *error);
524 
525 void _dbus_print_backtrace (void);
526 
528  DBusPipe *print_pid_pipe,
529  DBusError *error,
530  dbus_bool_t keep_umask);
531 
532 dbus_bool_t _dbus_verify_daemon_user (const char *user);
533 dbus_bool_t _dbus_change_to_daemon_user (const char *user,
534  DBusError *error);
535 
537  DBusPipe *print_pid_pipe,
538  dbus_pid_t pid_to_write,
539  DBusError *error);
540 
541 dbus_bool_t _dbus_command_for_pid (unsigned long pid,
542  DBusString *str,
543  int max_len,
544  DBusError *error);
545 
547 typedef void (* DBusSignalHandler) (int sig);
548 
549 void _dbus_set_signal_handler (int sig,
550  DBusSignalHandler handler);
551 
552 dbus_bool_t _dbus_user_at_console (const char *username,
553  DBusError *error);
554 
555 void _dbus_init_system_log (dbus_bool_t is_daemon);
556 
557 typedef enum {
558  DBUS_SYSTEM_LOG_INFO,
559  DBUS_SYSTEM_LOG_WARNING,
560  DBUS_SYSTEM_LOG_SECURITY,
561  DBUS_SYSTEM_LOG_FATAL
562 } DBusSystemLogSeverity;
563 
564 void _dbus_system_log (DBusSystemLogSeverity severity, const char *msg, ...) _DBUS_GNUC_PRINTF (2, 3);
565 void _dbus_system_logv (DBusSystemLogSeverity severity, const char *msg, va_list args);
566 
567 /* Define DBUS_VA_COPY() to do the right thing for copying va_list variables.
568  * config.h may have already defined DBUS_VA_COPY as va_copy or __va_copy.
569  */
570 #if !defined (DBUS_VA_COPY)
571 # if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
572 # define DBUS_VA_COPY(ap1, ap2) (*(ap1) = *(ap2))
573 # elif defined (DBUS_VA_COPY_AS_ARRAY)
574 # define DBUS_VA_COPY(ap1, ap2) memcpy ((ap1), (ap2), sizeof (va_list))
575 # else /* va_list is a pointer */
576 # define DBUS_VA_COPY(ap1, ap2) ((ap1) = (ap2))
577 # endif /* va_list is a pointer */
578 #endif /* !DBUS_VA_COPY */
579 
580 
585 #define _DBUS_BYTE_OF_PRIMITIVE(p, i) \
586  (((const char*)&(p))[(i)])
587 
592 #define _DBUS_DOUBLES_BITWISE_EQUAL(a, b) \
593  (_DBUS_BYTE_OF_PRIMITIVE (a, 0) == _DBUS_BYTE_OF_PRIMITIVE (b, 0) && \
594  _DBUS_BYTE_OF_PRIMITIVE (a, 1) == _DBUS_BYTE_OF_PRIMITIVE (b, 1) && \
595  _DBUS_BYTE_OF_PRIMITIVE (a, 2) == _DBUS_BYTE_OF_PRIMITIVE (b, 2) && \
596  _DBUS_BYTE_OF_PRIMITIVE (a, 3) == _DBUS_BYTE_OF_PRIMITIVE (b, 3) && \
597  _DBUS_BYTE_OF_PRIMITIVE (a, 4) == _DBUS_BYTE_OF_PRIMITIVE (b, 4) && \
598  _DBUS_BYTE_OF_PRIMITIVE (a, 5) == _DBUS_BYTE_OF_PRIMITIVE (b, 5) && \
599  _DBUS_BYTE_OF_PRIMITIVE (a, 6) == _DBUS_BYTE_OF_PRIMITIVE (b, 6) && \
600  _DBUS_BYTE_OF_PRIMITIVE (a, 7) == _DBUS_BYTE_OF_PRIMITIVE (b, 7))
601 
602 dbus_bool_t _dbus_get_autolaunch_address (const char *scope,
603  DBusString *address,
604  DBusError *error);
605 
607  DBusString *address,
608  DBusError *error);
609 
613 typedef union DBusGUID DBusGUID;
614 
616  dbus_bool_t create_if_not_found,
617  DBusError *error);
618 
625 
630 
635 
636 DBUS_PRIVATE_EXPORT
638  const char *suffix,
639  DBusList **dir_list);
640 
641 unsigned long _dbus_pid_for_log (void);
642 
643 /* FIXME move back to dbus-sysdeps-unix.h probably -
644  * the PID file handling just needs a little more abstraction
645  * in the bus daemon first.
646  */
647 DBUS_PRIVATE_EXPORT
648 dbus_pid_t _dbus_getpid (void);
649 
650 DBUS_PRIVATE_EXPORT
651 dbus_uid_t _dbus_getuid (void);
652 
653 dbus_bool_t _dbus_change_to_daemon_user (const char *user,
654  DBusError *error);
655 
656 DBUS_PRIVATE_EXPORT
657 void _dbus_flush_caches (void);
658 
659 /*
660  * replaces the term DBUS_PREFIX in configure_time_path by the
661  * current dbus installation directory. On unix this function is a noop
662  *
663  * @param configure_time_path
664  * @return real path
665  */
666 const char *
667 _dbus_replace_install_prefix (const char *configure_time_path);
668 
669 /* Do not set this too high: it is a denial-of-service risk.
670  * See <https://bugs.freedesktop.org/show_bug.cgi?id=82820>
671  *
672  * (This needs to be in the non-Unix-specific header so that
673  * the config-parser can use it.)
674  */
675 #define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16
676 
677 typedef struct DBusRLimit DBusRLimit;
678 
679 DBusRLimit *_dbus_rlimit_save_fd_limit (DBusError *error);
680 dbus_bool_t _dbus_rlimit_raise_fd_limit_if_privileged (unsigned int desired,
681  DBusError *error);
682 dbus_bool_t _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
683  DBusError *error);
684 void _dbus_rlimit_free (DBusRLimit *lim);
685 
689 
690 
691 #ifdef DBUS_WIN
692 #include "dbus-sysdeps-win.h"
693 #endif
694 
695 #endif /* DBUS_SYSDEPS_H */
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:279
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_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 ...
volatile dbus_int32_t value
Value of the atomic integer.
Definition: dbus-sysdeps.h:284
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_become_daemon(const DBusString *pidfile, DBusPipe *print_pid_pipe, DBusError *error, dbus_bool_t keep_umask)
Does the chdir, fork, setsid, etc.
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_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_bool_t _dbus_path_is_absolute(const DBusString *filename)
Checks whether the filename is an absolute path.
dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()).
void _dbus_system_log(DBusSystemLogSeverity severity, const char *msg,...)
Log a message to the system log file (e.g.
Portable struct with stat() results.
Definition: dbus-sysdeps.h:504
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.
void _dbus_directory_close(DBusDirIter *iter)
Closes a directory iteration.
dbus_bool_t _dbus_directory_get_next_file(DBusDirIter *iter, DBusString *filename, DBusError *error)
Get next file in the directory.
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:511
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_pid_t _dbus_getpid(void)
Gets our process ID.
dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
int _dbus_read_socket(DBusSocket fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
DBusDirIter * _dbus_directory_open(const DBusString *filename, DBusError *error)
Open a directory to iterate over.
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.
short events
Events to poll for.
Definition: dbus-sysdeps.h:383
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_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
dbus_bool_t _dbus_get_is_errno_etoomanyrefs(int e)
See if errno is ETOOMANYREFS.
Definition: dbus-sysdeps.c:735
void _dbus_abort(void)
Aborts the program with SIGABRT (dumping core).
Definition: dbus-sysdeps.c:77
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus.
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
dbus_bool_t _dbus_clearenv(void)
Wrapper for clearenv().
Definition: dbus-sysdeps.c:201
Internals of directory iterator.
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:506
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:105
Socket interface.
Definition: dbus-sysdeps.h:148
dbus_bool_t _dbus_change_to_daemon_user(const char *user, DBusError *error)
Changes the user and group the bus is running as.
void _dbus_threads_unlock_platform_specific(void)
Undo _dbus_threads_lock_platform_specific().
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...
dbus_bool_t _dbus_get_is_errno_epipe(int e)
See if errno is EPIPE.
Definition: dbus-sysdeps.c:725
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:509
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_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:550
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_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
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...
void(* DBusSignalHandler)(int sig)
A UNIX signal handler.
Definition: dbus-sysdeps.h:547
dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
Creates a directory.
dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
dbus_bool_t _dbus_get_is_errno_eintr(int e)
See if errno is EINTR.
Definition: dbus-sysdeps.c:715
Object representing an exception.
Definition: dbus-errors.h:48
void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, DBusSocket **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
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.
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:513
void _dbus_flush_caches(void)
Called when the bus daemon is signaled to reload its configuration; any caches should be nuked...
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 credentials of the current process to the passed-in credentials object.
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:507
DBusPollable fd
File descriptor.
Definition: dbus-sysdeps.h:382
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).
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:508
void _dbus_system_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g.
dbus_bool_t _dbus_verify_daemon_user(const char *user)
Verify that after the fork we can successfully change to this user.
dbus_bool_t _dbus_stat(const DBusString *filename, DBusStat *statbuf, DBusError *error)
stat() wrapper.
void _dbus_exit(int code)
Exit the process, returning the given value.
const char * _dbus_strerror_from_errno(void)
Get error message from errno.
Definition: dbus-sysdeps.c:749
const char * _dbus_error_from_system_errno(void)
Converts the current system errno value into a DBusError name.
Definition: dbus-sysdeps.c:682
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...
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_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
void _dbus_set_signal_handler(int sig, DBusSignalHandler handler)
Installs a UNIX signal handler.
A node in a linked list.
Definition: dbus-list.h:34
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_uid_t _dbus_getuid(void)
Gets our UID.
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_user_at_console(const char *username, DBusError *error)
Checks if user is at the console.
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_windows_user_is_process_owner(const char *windows_sid)
Checks to see if the Windows user SID matches the owner of the process.
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_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.
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:512
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
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.
dbus_bool_t _dbus_generate_random_bytes_buffer(char *buffer, int n_bytes, DBusError *error)
Fills n_bytes of the given buffer with random bytes.
Definition: dbus-sysdeps.c:516
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
unsigned long dbus_gid_t
A group ID.
Definition: dbus-sysdeps.h:109
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:510
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...
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.
dbus_bool_t _dbus_append_session_config_file(DBusString *str)
Append the absolute path of the session.conf file.
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:185
unsigned long dbus_uid_t
A user ID.
Definition: dbus-sysdeps.h:107
void _dbus_set_errno_to_zero(void)
Assign 0 to the global errno variable.
Definition: dbus-sysdeps.c:691
int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
short revents
Events that occurred.
Definition: dbus-sysdeps.h:384
dbus_bool_t _dbus_get_standard_system_servicedirs(DBusList **dirs)
Returns the standard directories for a system bus to look for service activation files.
void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
dbus_bool_t _dbus_get_is_errno_enomem(int e)
See if errno is ENOMEM.
Definition: dbus-sysdeps.c:705
dbus_bool_t _dbus_credentials_add_from_user(DBusCredentials *credentials, const DBusString *username)
Adds the credentials corresponding to the given username.
#define DBUS_END_DECLS
Macro used after declaring functions in the D-Bus header files.