D-Bus 1.15.4
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 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
8 *
9 * Licensed under the Academic Free License version 2.1
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 *
25 */
26
27#ifndef DBUS_SYSDEPS_H
28#define DBUS_SYSDEPS_H
29
30#ifndef VERSION
31#warning Please include config.h before dbus-sysdeps.h
32#include "config.h"
33#endif
34
35#include <stdint.h>
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#if !defined(BROKEN_POLL) && (defined(__APPLE__) || defined(__INTERIX))
52 /* Following libcurl's example, we blacklist poll() on Darwin
53 * (macOS, iOS, etc.) and Interix due to a history of implementation
54 * issues.
55 * https://github.com/curl/curl/blob/master/m4/curl-functions.m4
56 *
57 * On unspecified older macOS versions, poll() failed if given a
58 * device node to poll.
59 *
60 * On macOS < 10.9, poll() with nfds=0 failed instead of waiting for
61 * the timeout and then succeeding.
62 *
63 * On macOS >= 10.12, poll() with nfds=0 succeeded immediately
64 * instead of waiting for the timeout, resulting in busy-looping.
65 *
66 * On Interix, poll() apparently only works for files in /proc.
67 *
68 * The "legacy" build flavour in our CI machinery defines BROKEN_POLL
69 * on whatever platform is in use (normally Linux) to force use of the
70 * same select()-based poll() emulation that we use for macOS, Interix,
71 * and any platform that lacks a real poll(), so that we can test it
72 * more regularly.
73 */
74# define BROKEN_POLL
75#endif
76
77/* Normally we'd only include this in dbus-sysdeps-unix.c.
78 * However, the member names in DBusPollFD are (deliberately) the same as
79 * in POSIX struct pollfd, and AIX's poll() implementation is known to
80 * do things like "#define events reqevents", which would break that approach.
81 * Defend against that by ensuring that if it's renamed anywhere, it's renamed
82 * everywhere.
83 */
84#ifdef HAVE_POLL
85#include <poll.h>
86#endif
87
88#ifdef DBUS_WINCE
89/* Windows CE lacks some system functions (such as errno and clock).
90 We bring them in here. */
91#include "dbus-sysdeps-wince-glue.h"
92#endif
93
94#ifdef DBUS_WIN
95#include <ws2tcpip.h>
96#endif
97
99
100#ifdef DBUS_WIN
101#define _DBUS_PATH_SEPARATOR ";"
102#else
103#define _DBUS_PATH_SEPARATOR ":"
104#endif
105
106/* Forward declarations */
107
108
110typedef struct DBusList DBusList;
111
113typedef struct DBusCredentials DBusCredentials;
114
116typedef struct DBusPipe DBusPipe;
117
124DBUS_PRIVATE_EXPORT
125void _dbus_abort (void) _DBUS_GNUC_NORETURN;
126
128DBUS_PRIVATE_EXPORT
129const char* _dbus_getenv (const char *varname);
130DBUS_PRIVATE_EXPORT
132char ** _dbus_get_environment (void);
133
135typedef unsigned long dbus_pid_t;
137typedef unsigned long dbus_uid_t;
139typedef unsigned long dbus_gid_t;
140
142#define DBUS_PID_UNSET ((dbus_pid_t) -1)
144#define DBUS_UID_UNSET ((dbus_uid_t) -1)
146#define DBUS_GID_UNSET ((dbus_gid_t) -1)
147
149#define DBUS_PID_FORMAT "%lu"
151#define DBUS_UID_FORMAT "%lu"
153#define DBUS_GID_FORMAT "%lu"
154
158#ifdef DBUS_WIN
159
160typedef struct { SOCKET sock; } DBusSocket;
161# define DBUS_SOCKET_FORMAT "Iu"
162# define DBUS_SOCKET_INIT { INVALID_SOCKET }
163
164_DBUS_WARN_UNUSED_RESULT
165static inline SOCKET
166_dbus_socket_printable (DBusSocket s) { return s.sock; }
167
168_DBUS_WARN_UNUSED_RESULT
169static inline dbus_bool_t
170_dbus_socket_is_valid (DBusSocket s) { return s.sock != INVALID_SOCKET; }
171
172static inline void
173_dbus_socket_invalidate (DBusSocket *s) { s->sock = INVALID_SOCKET; }
174
175_DBUS_WARN_UNUSED_RESULT
176static inline int
177_dbus_socket_get_int (DBusSocket s) { return (int)s.sock; }
178
179#else /* not DBUS_WIN */
180
181typedef struct { int fd; } DBusSocket;
182# define DBUS_SOCKET_FORMAT "d"
183# define DBUS_SOCKET_INIT { -1 }
184
185_DBUS_WARN_UNUSED_RESULT
186static inline int
187_dbus_socket_printable (DBusSocket s) { return s.fd; }
188
189_DBUS_WARN_UNUSED_RESULT
190static inline dbus_bool_t
191_dbus_socket_is_valid (DBusSocket s) { return s.fd >= 0; }
192
193static inline void
194_dbus_socket_invalidate (DBusSocket *s) { s->fd = -1; }
195
196_DBUS_WARN_UNUSED_RESULT
197static inline int
198_dbus_socket_get_int (DBusSocket s) { return s.fd; }
199
200#endif /* not DBUS_WIN */
201
202_DBUS_WARN_UNUSED_RESULT
203static inline DBusSocket
204_dbus_socket_get_invalid (void)
205{
206 DBusSocket s = DBUS_SOCKET_INIT;
207
208 return s;
209}
210
212 DBusError *error);
213
214DBUS_PRIVATE_EXPORT
216 DBusError *error);
217DBUS_PRIVATE_EXPORT
219 DBusString *buffer,
220 int count);
221DBUS_PRIVATE_EXPORT
223 const DBusString *buffer,
224 int start,
225 int len);
227 const DBusString *buffer1,
228 int start1,
229 int len1,
230 const DBusString *buffer2,
231 int start2,
232 int len2);
233
235 DBusString *buffer,
236 int count,
237 int *fds,
238 unsigned int *n_fds);
239DBUS_PRIVATE_EXPORT
240int _dbus_write_socket_with_unix_fds (DBusSocket fd,
241 const DBusString *buffer,
242 int start,
243 int len,
244 const int *fds,
245 int n_fds);
246int _dbus_write_socket_with_unix_fds_two (DBusSocket fd,
247 const DBusString *buffer1,
248 int start1,
249 int len1,
250 const DBusString *buffer2,
251 int start2,
252 int len2,
253 const int *fds,
254 int n_fds);
255
256DBusSocket _dbus_connect_tcp_socket (const char *host,
257 const char *port,
258 const char *family,
259 DBusError *error);
260DBusSocket _dbus_connect_tcp_socket_with_nonce (const char *host,
261 const char *port,
262 const char *family,
263 const char *noncefile,
264 DBusError *error);
265int _dbus_listen_tcp_socket (const char *host,
266 const char *port,
267 const char *family,
268 DBusString *retport,
269 const char **retfamily,
270 DBusSocket **fds_p,
271 DBusError *error);
273
275 DBusCredentials *credentials,
276 DBusError *error);
278 DBusError *error);
279
280typedef enum
281{
282 DBUS_CREDENTIALS_ADD_FLAGS_USER_DATABASE = (1 << 0),
283 DBUS_CREDENTIALS_ADD_FLAGS_NONE = 0
284} DBusCredentialsAddFlags;
285
287 const DBusString *username,
288 DBusCredentialsAddFlags flags,
289 DBusError *error);
290
292DBUS_PRIVATE_EXPORT
294
296 dbus_uid_t *uid_p);
298 dbus_gid_t *gid_p);
300 dbus_gid_t **group_ids,
301 int *n_group_ids);
303 DBusError *error);
305dbus_bool_t _dbus_windows_user_is_process_owner (const char *windows_sid);
306
308 DBusCredentials *credentials);
309
311
313
317typedef struct DBusAtomic DBusAtomic;
318
323{
324#ifdef DBUS_WIN
325 volatile long value;
326#else
328#endif
329};
330
331DBUS_PRIVATE_EXPORT
333DBUS_PRIVATE_EXPORT
335DBUS_PRIVATE_EXPORT
337DBUS_PRIVATE_EXPORT
338void _dbus_atomic_set_zero (DBusAtomic *atomic);
339DBUS_PRIVATE_EXPORT
341
342#ifdef DBUS_WIN
343
344/* On Windows, you can only poll sockets. We emulate Unix poll() using
345 * select(), so it doesn't matter what precise type we put in DBusPollFD;
346 * use DBusSocket so that the compiler can check we are doing it right.
347 */
348typedef DBusSocket DBusPollable;
349# define DBUS_POLLABLE_FORMAT "Iu"
350
351static inline DBusPollable
352_dbus_socket_get_pollable (DBusSocket s) { return s; }
353
354static inline SOCKET
355_dbus_pollable_printable (DBusPollable p) { return p.sock; }
356
357static inline dbus_bool_t
358_dbus_pollable_is_valid (DBusPollable p) { return _dbus_socket_is_valid (p); }
359
360static inline void
361_dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
362
363static inline dbus_bool_t
364_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a.sock == b.sock; }
365
366#else /* !DBUS_WIN */
367
368/* On Unix, you can poll sockets, pipes, etc., and we must put exactly
369 * "int" in DBusPollFD because we're relying on its layout exactly matching
370 * struct pollfd. (This is silly, and one day we should use a better
371 * abstraction.)
372 */
373typedef int DBusPollable;
374# define DBUS_POLLABLE_FORMAT "d"
375
376static inline DBusPollable
377_dbus_socket_get_pollable (DBusSocket s) { return s.fd; }
378
379static inline int
380_dbus_pollable_printable (DBusPollable p) { return p; }
381
382static inline dbus_bool_t
383_dbus_pollable_is_valid (DBusPollable p) { return p >= 0; }
384
385static inline void
386_dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
387
388static inline dbus_bool_t
389_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a == b; }
390
391#endif /* !DBUS_WIN */
392
393#if defined(HAVE_POLL) && !defined(BROKEN_POLL)
398typedef struct pollfd DBusPollFD;
399
401#define _DBUS_POLLIN POLLIN
403#define _DBUS_POLLPRI POLLPRI
405#define _DBUS_POLLOUT POLLOUT
407#define _DBUS_POLLERR POLLERR
409#define _DBUS_POLLHUP POLLHUP
411#define _DBUS_POLLNVAL POLLNVAL
412#else
413/* Emulate poll() via select(). Because we aren't really going to call
414 * poll(), any similarly-shaped struct is acceptable, and any power of 2
415 * will do for the events/revents; these values happen to match Linux
416 * and *BSD. */
417typedef struct
418{
419 DBusPollable fd;
420 short events;
421 short revents;
422} DBusPollFD;
423
425#define _DBUS_POLLIN 0x0001
427#define _DBUS_POLLPRI 0x0002
429#define _DBUS_POLLOUT 0x0004
431#define _DBUS_POLLERR 0x0008
433#define _DBUS_POLLHUP 0x0010
435#define _DBUS_POLLNVAL 0x0020
436#endif
437
438DBUS_PRIVATE_EXPORT
439int _dbus_poll (DBusPollFD *fds,
440 int n_fds,
441 int timeout_milliseconds);
442
443DBUS_PRIVATE_EXPORT
444void _dbus_sleep_milliseconds (int milliseconds);
445
446DBUS_PRIVATE_EXPORT
447void _dbus_get_monotonic_time (long *tv_sec,
448 long *tv_usec);
449
450DBUS_PRIVATE_EXPORT
451void _dbus_get_real_time (long *tv_sec,
452 long *tv_usec);
453
457DBUS_PRIVATE_EXPORT
459 DBusError *error);
460DBUS_PRIVATE_EXPORT
462 DBusError *error);
463DBUS_PRIVATE_EXPORT
465 DBusError *error);
466
467DBUS_PRIVATE_EXPORT
469 const DBusString *next_component);
471 DBusString *dirname);
472DBUS_PRIVATE_EXPORT
474
478 DBusError *error);
479
482
485
487 DBusError *error);
489 DBusString *filename,
490 DBusError *error);
492
494 DBusError *error);
495
496DBUS_PRIVATE_EXPORT
497const char* _dbus_get_tmpdir (void);
498
502_DBUS_WARN_UNUSED_RESULT
504 int n_bytes,
505 DBusError *error);
507 int n_bytes,
508 DBusError *error);
509DBUS_PRIVATE_EXPORT
511 int n_bytes,
512 DBusError *error);
513
514DBUS_PRIVATE_EXPORT
515const char* _dbus_error_from_errno (int error_number);
516DBUS_PRIVATE_EXPORT
517const char* _dbus_error_from_system_errno (void);
518
519int _dbus_get_low_level_socket_errno (void);
520
521int _dbus_save_socket_errno (void);
522void _dbus_restore_socket_errno (int saved_errno);
523void _dbus_set_errno_to_zero (void);
529DBUS_PRIVATE_EXPORT
530const char* _dbus_strerror_from_errno (void);
531
532void _dbus_disable_sigpipe (void);
533
534DBUS_PRIVATE_EXPORT
535void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
536
537DBUS_PRIVATE_EXPORT
538int _dbus_printf_string_upper_bound (const char *format,
539 va_list args) _DBUS_GNUC_PRINTF (1, 0);
540
541#ifdef DBUS_ENABLE_VERBOSE_MODE
542DBUS_PRIVATE_EXPORT
543void _dbus_print_thread (void);
544#endif
545
549typedef struct
550{
551 unsigned long mode;
552 unsigned long nlink;
555 unsigned long size;
556 unsigned long atime;
557 unsigned long mtime;
558 unsigned long ctime;
559} DBusStat;
560
561dbus_bool_t _dbus_stat (const DBusString *filename,
562 DBusStat *statbuf,
563 DBusError *error);
564
565DBusSocket _dbus_connect_unix_socket (const char *path,
566 dbus_bool_t abstract,
567 DBusError *error);
568DBusSocket _dbus_listen_unix_socket (const char *path,
569 dbus_bool_t abstract,
570 DBusError *error);
571
572DBusSocket _dbus_connect_exec (const char *path,
573 char *const argv[],
574 DBusError *error);
575
576DBUS_PRIVATE_EXPORT
578 DBusSocket *fd2,
579 dbus_bool_t blocking,
580 DBusError *error);
581
582DBUS_PRIVATE_EXPORT
583void _dbus_print_backtrace (void);
584
586 DBusPipe *print_pid_pipe,
587 DBusError *error,
588 dbus_bool_t keep_umask);
589
590dbus_bool_t _dbus_verify_daemon_user (const char *user);
592 DBusError *error);
593
595 DBusPipe *print_pid_pipe,
596 dbus_pid_t pid_to_write,
597 DBusError *error);
598
599dbus_bool_t _dbus_command_for_pid (unsigned long pid,
600 DBusString *str,
601 int max_len,
602 DBusError *error);
603
604typedef enum {
605 DBUS_LOG_FLAGS_STDERR = (1 << 0),
606 DBUS_LOG_FLAGS_SYSTEM_LOG = (1 << 1)
607} DBusLogFlags;
608
609DBUS_PRIVATE_EXPORT
610void _dbus_init_system_log (const char *tag,
611 DBusLogFlags flags);
612
613typedef enum {
614 DBUS_SYSTEM_LOG_INFO,
615 DBUS_SYSTEM_LOG_WARNING,
616 DBUS_SYSTEM_LOG_SECURITY,
617 DBUS_SYSTEM_LOG_ERROR
618} DBusSystemLogSeverity;
619
620DBUS_PRIVATE_EXPORT
621void _dbus_log (DBusSystemLogSeverity severity,
622 const char *msg,
623 ...) _DBUS_GNUC_PRINTF (2, 3);
624DBUS_PRIVATE_EXPORT
625void _dbus_logv (DBusSystemLogSeverity severity,
626 const char *msg,
627 va_list args) _DBUS_GNUC_PRINTF (2, 0);
628
634#define _DBUS_DOUBLES_BITWISE_EQUAL(a, b) (memcmp (&(a), &(b), sizeof (double)) == 0)
635
637 DBusString *address,
638 DBusError *error);
639
640DBUS_PRIVATE_EXPORT
642 DBusString *address,
643 DBusError *error);
644
648typedef union DBusGUID DBusGUID;
649
650DBUS_PRIVATE_EXPORT
652 dbus_bool_t create_if_not_found,
653 DBusError *error);
654
661
666
671
672DBUS_PRIVATE_EXPORT
674 const char *suffix,
675 DBusList **dir_list);
676
677unsigned long _dbus_pid_for_log (void);
678
679/* FIXME move back to dbus-sysdeps-unix.h probably -
680 * the PID file handling just needs a little more abstraction
681 * in the bus daemon first.
682 */
683DBUS_PRIVATE_EXPORT
685
686DBUS_PRIVATE_EXPORT
688
689DBUS_PRIVATE_EXPORT
690void _dbus_flush_caches (void);
691
693
694/* Do not set this too high: it is a denial-of-service risk.
695 * See <https://bugs.freedesktop.org/show_bug.cgi?id=82820>
696 *
697 * (This needs to be in the non-Unix-specific header so that
698 * the config-parser can use it.)
699 */
700#define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16
701
702typedef struct DBusRLimit DBusRLimit;
703
704DBusRLimit *_dbus_rlimit_save_fd_limit (DBusError *error);
705dbus_bool_t _dbus_rlimit_raise_fd_limit (DBusError *error);
706dbus_bool_t _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
707 DBusError *error);
708void _dbus_rlimit_free (DBusRLimit *lim);
709
710void _dbus_daemon_report_ready (void);
714
715dbus_bool_t _dbus_inet_sockaddr_to_string (const void *sockaddr_pointer,
716 size_t len,
717 char *string,
718 size_t string_len,
719 const char **family_name,
720 dbus_uint16_t *port,
721 DBusError *error);
722void _dbus_set_error_with_inet_sockaddr (DBusError *error,
723 const void *sockaddr_pointer,
724 size_t len,
725 const char *description,
726 int saved_errno);
727void _dbus_combine_tcp_errors (DBusList **sources,
728 const char *summary,
729 const char *host,
730 const char *port,
731 DBusError *dest);
732
745#define _DBUS_MAX_SUN_PATH_LENGTH 99
746
750
751
752#ifdef DBUS_WIN
753#include "dbus-sysdeps-win.h"
754#endif
755
756#endif /* DBUS_SYSDEPS_H */
#define DBUS_BEGIN_DECLS
Macro used prior to declaring functions in the D-Bus header files.
#define DBUS_END_DECLS
Macro used after declaring functions in the D-Bus header files.
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_stat(const DBusString *filename, DBusStat *statbuf, DBusError *error)
stat() wrapper.
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're running on from the dbus configuration.
dbus_bool_t _dbus_get_standard_session_servicedirs(DBusList **dirs)
Returns the standard directories for a session bus to look for service activation files.
dbus_bool_t _dbus_get_is_errno_epipe(int e)
See if errno is EPIPE.
Definition: dbus-sysdeps.c:736
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_get_is_errno_etoomanyrefs(int e)
See if errno is ETOOMANYREFS.
Definition: dbus-sysdeps.c:746
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).
void _dbus_directory_close(DBusDirIter *iter)
Closes a directory iteration.
unsigned long dbus_uid_t
A user ID.
Definition: dbus-sysdeps.h:137
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_WARN_UNUSED_RESULT dbus_bool_t _dbus_generate_random_bytes_buffer(char *buffer, int n_bytes, DBusError *error)
Random numbers.
Definition: dbus-sysdeps.c:527
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...
dbus_bool_t _dbus_get_session_config_file(DBusString *str)
Get the absolute path of the session.conf file.
dbus_bool_t _dbus_clearenv(void)
Wrapper for clearenv().
Definition: dbus-sysdeps.c:213
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:135
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.
void _dbus_daemon_report_reloading(void)
Report to a service manager that the daemon calling this function is reloading configuration.
DBUS_PRIVATE_EXPORT void _dbus_exit(int code) _DBUS_GNUC_NORETURN
Exit the process, returning the given value.
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd)
Checks whether file descriptors may be passed via the socket.
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.
DBUS_PRIVATE_EXPORT void _dbus_atomic_set_nonzero(DBusAtomic *atomic)
Atomically set the value of an integer to something nonzero.
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()).
unsigned long dbus_gid_t
A group ID.
Definition: dbus-sysdeps.h:139
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.
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...
DBusDirIter * _dbus_directory_open(const DBusString *filename, DBusError *error)
Open a directory to iterate over.
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_append_keyring_directory_for_credentials(DBusString *directory, DBusCredentials *credentials)
Appends the directory in which a keyring for the given credentials should be stored.
char ** _dbus_get_environment(void)
Gets a NULL-terminated list of key=value pairs from the environment.
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_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
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_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...
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
Definition: dbus-sysdeps.c:197
DBusSocket _dbus_listen_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
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_PRIVATE_EXPORT dbus_pid_t _dbus_getpid(void)
Gets our process ID.
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
dbus_bool_t _dbus_set_socket_nonblocking(DBusSocket fd, DBusError *error)
Sets a file descriptor to be nonblocking.
DBUS_PRIVATE_EXPORT 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 const char * _dbus_error_from_system_errno(void)
Converts the current system errno value into a DBusError name.
Definition: dbus-sysdeps.c:693
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.
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.
void _dbus_threads_lock_platform_specific(void)
Lock a static mutex used to protect _dbus_threads_init_platform_specific().
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
dbus_bool_t _dbus_check_setuid(void)
NOTE: If you modify this function, please also consider making the corresponding change in GLib.
void _dbus_daemon_report_reloaded(void)
Report to a service manager that the daemon calling this function is reloading configuration.
DBUS_PRIVATE_EXPORT void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
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_change_to_daemon_user(const char *user, DBusError *error)
Changes the user and group the bus is running as.
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_strerror_from_errno(void)
Get error message from errno.
Definition: dbus-sysdeps.c:760
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_PRIVATE_EXPORT void _dbus_log(DBusSystemLogSeverity severity, const char *msg,...)
Log a message to the system log file (e.g.
Definition: dbus-sysdeps.c:772
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_daemon_unpublish_session_bus_address(void)
Clear the platform-specific centralized location where the session bus address is published.
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.
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.
void _dbus_threads_unlock_platform_specific(void)
Undo _dbus_threads_lock_platform_specific().
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_uid_t _dbus_getuid(void)
Gets our UID.
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...
void _dbus_daemon_report_stopping(void)
Report to a service manager that the daemon calling this function is shutting down.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_close_socket(DBusSocket *fd, DBusError *error)
Closes a socket and invalidates it.
DBusSocket _dbus_connect_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and connects it to the UNIX domain socket at the given path.
DBUS_PRIVATE_EXPORT void _dbus_atomic_set_zero(DBusAtomic *atomic)
Atomically set the value of an integer to 0.
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
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_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.
DBUS_PRIVATE_EXPORT void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
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:601
DBUS_PRIVATE_EXPORT void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
void _dbus_abort(void)
Aborts the program with SIGABRT (dumping core).
Definition: dbus-sysdeps.c:89
dbus_bool_t _dbus_directory_get_next_file(DBusDirIter *iter, DBusString *filename, DBusError *error)
Get next file in the directory.
DBUS_PRIVATE_EXPORT int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
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:561
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus.
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.
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_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.
DBusSocket _dbus_connect_exec(const char *path, char *const argv[], DBusError *error)
Creates a UNIX domain socket and connects it to the specified process to execute.
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:238
DBUS_PRIVATE_EXPORT void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
DBUS_PRIVATE_EXPORT void _dbus_init_system_log(const char *tag, DBusLogFlags flags)
Initialize the system log.
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.
DBusSocket _dbus_accept(DBusSocket listen_fd)
Accepts a connection on a listening socket.
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...
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_bool_t _dbus_get_is_errno_eintr(int e)
See if errno is EINTR.
Definition: dbus-sysdeps.c:726
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_unix_user_is_at_console(dbus_uid_t uid, DBusError *error)
Checks to see if the UNIX user ID is at the console.
void _dbus_set_errno_to_zero(void)
Assign 0 to the global errno variable.
Definition: dbus-sysdeps.c:702
DBUS_PRIVATE_EXPORT const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR,...
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.
dbus_bool_t _dbus_get_is_errno_enomem(int e)
See if errno is ENOMEM.
Definition: dbus-sysdeps.c:716
dbus_bool_t _dbus_string_get_dirname(const DBusString *filename, DBusString *dirname)
Get the directory name from a complete filename.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_path_is_absolute(const DBusString *filename)
Checks whether the filename is an absolute path.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
directory interface
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:37
unsigned short dbus_uint16_t
A 16-bit unsigned integer on all platforms.
int dbus_int32_t
A 32-bit signed integer on all platforms.
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:323
volatile dbus_int32_t value
Value of the atomic integer.
Definition: dbus-sysdeps.h:327
Internals of directory iterator.
Object representing an exception.
Definition: dbus-errors.h:51
A node in a linked list.
Definition: dbus-list.h:37
short events
Events to poll for.
Definition: dbus-sysdeps.h:420
short revents
Events that occurred.
Definition: dbus-sysdeps.h:421
DBusPollable fd
File descriptor.
Definition: dbus-sysdeps.h:419
Socket interface.
Definition: dbus-sysdeps.h:181
Portable struct with stat() results.
Definition: dbus-sysdeps.h:550
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:552
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:555
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:553
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:551
dbus_gid_t gid
Group owning file.
Definition: dbus-sysdeps.h:554
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:556
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:558
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:557
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...