D-Bus 1.15.2
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#include <stdint.h>
34
35#ifdef HAVE_INTTYPES_H
36#include <inttypes.h>
37#endif
38
39#include <dbus/dbus-errors.h>
40#include <dbus/dbus-file.h>
41#include <dbus/dbus-string.h>
42
43/* this is perhaps bogus, but strcmp() etc. are faster if we use the
44 * stuff straight out of string.h, so have this here for now.
45 */
46#include <string.h>
47#include <stdarg.h>
48
49#if !defined(BROKEN_POLL) && (defined(__APPLE__) || defined(__INTERIX))
50 /* Following libcurl's example, we blacklist poll() on Darwin
51 * (macOS, iOS, etc.) and Interix due to a history of implementation
52 * issues.
53 * https://github.com/curl/curl/blob/master/m4/curl-functions.m4
54 *
55 * On unspecified older macOS versions, poll() failed if given a
56 * device node to poll.
57 *
58 * On macOS < 10.9, poll() with nfds=0 failed instead of waiting for
59 * the timeout and then succeeding.
60 *
61 * On macOS >= 10.12, poll() with nfds=0 succeeded immediately
62 * instead of waiting for the timeout, resulting in busy-looping.
63 *
64 * On Interix, poll() apparently only works for files in /proc.
65 *
66 * The "legacy" build flavour in our CI machinery defines BROKEN_POLL
67 * on whatever platform is in use (normally Linux) to force use of the
68 * same select()-based poll() emulation that we use for macOS, Interix,
69 * and any platform that lacks a real poll(), so that we can test it
70 * more regularly.
71 */
72# define BROKEN_POLL
73#endif
74
75/* Normally we'd only include this in dbus-sysdeps-unix.c.
76 * However, the member names in DBusPollFD are (deliberately) the same as
77 * in POSIX struct pollfd, and AIX's poll() implementation is known to
78 * do things like "#define events reqevents", which would break that approach.
79 * Defend against that by ensuring that if it's renamed anywhere, it's renamed
80 * everywhere.
81 */
82#ifdef HAVE_POLL
83#include <poll.h>
84#endif
85
86#ifdef DBUS_WINCE
87/* Windows CE lacks some system functions (such as errno and clock).
88 We bring them in here. */
89#include "dbus-sysdeps-wince-glue.h"
90#endif
91
92#ifdef DBUS_WIN
93#include <ws2tcpip.h>
94#endif
95
97
98#ifdef DBUS_WIN
99#define _DBUS_PATH_SEPARATOR ";"
100#else
101#define _DBUS_PATH_SEPARATOR ":"
102#endif
103
104/* Forward declarations */
105
106
108typedef struct DBusList DBusList;
109
111typedef struct DBusCredentials DBusCredentials;
112
114typedef struct DBusPipe DBusPipe;
115
122DBUS_PRIVATE_EXPORT
123void _dbus_abort (void) _DBUS_GNUC_NORETURN;
124
126DBUS_PRIVATE_EXPORT
127const char* _dbus_getenv (const char *varname);
128DBUS_PRIVATE_EXPORT
130char ** _dbus_get_environment (void);
131
133typedef unsigned long dbus_pid_t;
135typedef unsigned long dbus_uid_t;
137typedef unsigned long dbus_gid_t;
138
140#define DBUS_PID_UNSET ((dbus_pid_t) -1)
142#define DBUS_UID_UNSET ((dbus_uid_t) -1)
144#define DBUS_GID_UNSET ((dbus_gid_t) -1)
145
147#define DBUS_PID_FORMAT "%lu"
149#define DBUS_UID_FORMAT "%lu"
151#define DBUS_GID_FORMAT "%lu"
152
156#ifdef DBUS_WIN
157
158typedef struct { SOCKET sock; } DBusSocket;
159# define DBUS_SOCKET_FORMAT "Iu"
160# define DBUS_SOCKET_INIT { INVALID_SOCKET }
161
162_DBUS_WARN_UNUSED_RESULT
163static inline SOCKET
164_dbus_socket_printable (DBusSocket s) { return s.sock; }
165
166_DBUS_WARN_UNUSED_RESULT
167static inline dbus_bool_t
168_dbus_socket_is_valid (DBusSocket s) { return s.sock != INVALID_SOCKET; }
169
170static inline void
171_dbus_socket_invalidate (DBusSocket *s) { s->sock = INVALID_SOCKET; }
172
173_DBUS_WARN_UNUSED_RESULT
174static inline int
175_dbus_socket_get_int (DBusSocket s) { return (int)s.sock; }
176
177#else /* not DBUS_WIN */
178
179typedef struct { int fd; } DBusSocket;
180# define DBUS_SOCKET_FORMAT "d"
181# define DBUS_SOCKET_INIT { -1 }
182
183_DBUS_WARN_UNUSED_RESULT
184static inline int
185_dbus_socket_printable (DBusSocket s) { return s.fd; }
186
187_DBUS_WARN_UNUSED_RESULT
188static inline dbus_bool_t
189_dbus_socket_is_valid (DBusSocket s) { return s.fd >= 0; }
190
191static inline void
192_dbus_socket_invalidate (DBusSocket *s) { s->fd = -1; }
193
194_DBUS_WARN_UNUSED_RESULT
195static inline int
196_dbus_socket_get_int (DBusSocket s) { return s.fd; }
197
198#endif /* not DBUS_WIN */
199
200_DBUS_WARN_UNUSED_RESULT
201static inline DBusSocket
202_dbus_socket_get_invalid (void)
203{
204 DBusSocket s = DBUS_SOCKET_INIT;
205
206 return s;
207}
208
210 DBusError *error);
211
212DBUS_PRIVATE_EXPORT
214 DBusError *error);
215DBUS_PRIVATE_EXPORT
217 DBusString *buffer,
218 int count);
219DBUS_PRIVATE_EXPORT
221 const DBusString *buffer,
222 int start,
223 int len);
225 const DBusString *buffer1,
226 int start1,
227 int len1,
228 const DBusString *buffer2,
229 int start2,
230 int len2);
231
233 DBusString *buffer,
234 int count,
235 int *fds,
236 unsigned int *n_fds);
237DBUS_PRIVATE_EXPORT
238int _dbus_write_socket_with_unix_fds (DBusSocket fd,
239 const DBusString *buffer,
240 int start,
241 int len,
242 const int *fds,
243 int n_fds);
244int _dbus_write_socket_with_unix_fds_two (DBusSocket fd,
245 const DBusString *buffer1,
246 int start1,
247 int len1,
248 const DBusString *buffer2,
249 int start2,
250 int len2,
251 const int *fds,
252 int n_fds);
253
254DBusSocket _dbus_connect_tcp_socket (const char *host,
255 const char *port,
256 const char *family,
257 DBusError *error);
258DBusSocket _dbus_connect_tcp_socket_with_nonce (const char *host,
259 const char *port,
260 const char *family,
261 const char *noncefile,
262 DBusError *error);
263int _dbus_listen_tcp_socket (const char *host,
264 const char *port,
265 const char *family,
266 DBusString *retport,
267 const char **retfamily,
268 DBusSocket **fds_p,
269 DBusError *error);
271
273 DBusCredentials *credentials,
274 DBusError *error);
276 DBusError *error);
277
278typedef enum
279{
280 DBUS_CREDENTIALS_ADD_FLAGS_USER_DATABASE = (1 << 0),
281 DBUS_CREDENTIALS_ADD_FLAGS_NONE = 0
282} DBusCredentialsAddFlags;
283
285 const DBusString *username,
286 DBusCredentialsAddFlags flags,
287 DBusError *error);
288
290DBUS_PRIVATE_EXPORT
292
294 dbus_uid_t *uid_p);
296 dbus_gid_t *gid_p);
298 dbus_gid_t **group_ids,
299 int *n_group_ids);
301 DBusError *error);
303dbus_bool_t _dbus_windows_user_is_process_owner (const char *windows_sid);
304
306 DBusCredentials *credentials);
307
309
311
315typedef struct DBusAtomic DBusAtomic;
316
321{
322#ifdef DBUS_WIN
323 volatile long value;
324#else
326#endif
327};
328
329DBUS_PRIVATE_EXPORT
331DBUS_PRIVATE_EXPORT
333DBUS_PRIVATE_EXPORT
335DBUS_PRIVATE_EXPORT
336void _dbus_atomic_set_zero (DBusAtomic *atomic);
337DBUS_PRIVATE_EXPORT
339
340#ifdef DBUS_WIN
341
342/* On Windows, you can only poll sockets. We emulate Unix poll() using
343 * select(), so it doesn't matter what precise type we put in DBusPollFD;
344 * use DBusSocket so that the compiler can check we are doing it right.
345 */
346typedef DBusSocket DBusPollable;
347# define DBUS_POLLABLE_FORMAT "Iu"
348
349static inline DBusPollable
350_dbus_socket_get_pollable (DBusSocket s) { return s; }
351
352static inline SOCKET
353_dbus_pollable_printable (DBusPollable p) { return p.sock; }
354
355static inline dbus_bool_t
356_dbus_pollable_is_valid (DBusPollable p) { return _dbus_socket_is_valid (p); }
357
358static inline void
359_dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
360
361static inline dbus_bool_t
362_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a.sock == b.sock; }
363
364#else /* !DBUS_WIN */
365
366/* On Unix, you can poll sockets, pipes, etc., and we must put exactly
367 * "int" in DBusPollFD because we're relying on its layout exactly matching
368 * struct pollfd. (This is silly, and one day we should use a better
369 * abstraction.)
370 */
371typedef int DBusPollable;
372# define DBUS_POLLABLE_FORMAT "d"
373
374static inline DBusPollable
375_dbus_socket_get_pollable (DBusSocket s) { return s.fd; }
376
377static inline int
378_dbus_pollable_printable (DBusPollable p) { return p; }
379
380static inline dbus_bool_t
381_dbus_pollable_is_valid (DBusPollable p) { return p >= 0; }
382
383static inline void
384_dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
385
386static inline dbus_bool_t
387_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a == b; }
388
389#endif /* !DBUS_WIN */
390
391#if defined(HAVE_POLL) && !defined(BROKEN_POLL)
396typedef struct pollfd DBusPollFD;
397
399#define _DBUS_POLLIN POLLIN
401#define _DBUS_POLLPRI POLLPRI
403#define _DBUS_POLLOUT POLLOUT
405#define _DBUS_POLLERR POLLERR
407#define _DBUS_POLLHUP POLLHUP
409#define _DBUS_POLLNVAL POLLNVAL
410#else
411/* Emulate poll() via select(). Because we aren't really going to call
412 * poll(), any similarly-shaped struct is acceptable, and any power of 2
413 * will do for the events/revents; these values happen to match Linux
414 * and *BSD. */
415typedef struct
416{
417 DBusPollable fd;
418 short events;
419 short revents;
420} DBusPollFD;
421
423#define _DBUS_POLLIN 0x0001
425#define _DBUS_POLLPRI 0x0002
427#define _DBUS_POLLOUT 0x0004
429#define _DBUS_POLLERR 0x0008
431#define _DBUS_POLLHUP 0x0010
433#define _DBUS_POLLNVAL 0x0020
434#endif
435
436DBUS_PRIVATE_EXPORT
437int _dbus_poll (DBusPollFD *fds,
438 int n_fds,
439 int timeout_milliseconds);
440
441DBUS_PRIVATE_EXPORT
442void _dbus_sleep_milliseconds (int milliseconds);
443
444DBUS_PRIVATE_EXPORT
445void _dbus_get_monotonic_time (long *tv_sec,
446 long *tv_usec);
447
448DBUS_PRIVATE_EXPORT
449void _dbus_get_real_time (long *tv_sec,
450 long *tv_usec);
451
455DBUS_PRIVATE_EXPORT
457 DBusError *error);
458DBUS_PRIVATE_EXPORT
460 DBusError *error);
461DBUS_PRIVATE_EXPORT
463 DBusError *error);
464
465DBUS_PRIVATE_EXPORT
467 const DBusString *next_component);
469 DBusString *dirname);
470DBUS_PRIVATE_EXPORT
472
476 DBusError *error);
477
480
483
485 DBusError *error);
487 DBusString *filename,
488 DBusError *error);
490
492 DBusError *error);
493
494DBUS_PRIVATE_EXPORT
495const char* _dbus_get_tmpdir (void);
496
500_DBUS_WARN_UNUSED_RESULT
502 int n_bytes,
503 DBusError *error);
505 int n_bytes,
506 DBusError *error);
507DBUS_PRIVATE_EXPORT
509 int n_bytes,
510 DBusError *error);
511
512DBUS_PRIVATE_EXPORT
513const char* _dbus_error_from_errno (int error_number);
514DBUS_PRIVATE_EXPORT
515const char* _dbus_error_from_system_errno (void);
516
517int _dbus_get_low_level_socket_errno (void);
518
519int _dbus_save_socket_errno (void);
520void _dbus_restore_socket_errno (int saved_errno);
521void _dbus_set_errno_to_zero (void);
527DBUS_PRIVATE_EXPORT
528const char* _dbus_strerror_from_errno (void);
529
530void _dbus_disable_sigpipe (void);
531
532DBUS_PRIVATE_EXPORT
533void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
534
535DBUS_PRIVATE_EXPORT
536int _dbus_printf_string_upper_bound (const char *format,
537 va_list args) _DBUS_GNUC_PRINTF (1, 0);
538
539#ifdef DBUS_ENABLE_VERBOSE_MODE
540DBUS_PRIVATE_EXPORT
541void _dbus_print_thread (void);
542#endif
543
547typedef struct
548{
549 unsigned long mode;
550 unsigned long nlink;
553 unsigned long size;
554 unsigned long atime;
555 unsigned long mtime;
556 unsigned long ctime;
557} DBusStat;
558
559dbus_bool_t _dbus_stat (const DBusString *filename,
560 DBusStat *statbuf,
561 DBusError *error);
562
563DBusSocket _dbus_connect_unix_socket (const char *path,
564 dbus_bool_t abstract,
565 DBusError *error);
566DBusSocket _dbus_listen_unix_socket (const char *path,
567 dbus_bool_t abstract,
568 DBusError *error);
569
570DBusSocket _dbus_connect_exec (const char *path,
571 char *const argv[],
572 DBusError *error);
573
574DBUS_PRIVATE_EXPORT
576 DBusSocket *fd2,
577 dbus_bool_t blocking,
578 DBusError *error);
579
580DBUS_PRIVATE_EXPORT
581void _dbus_print_backtrace (void);
582
584 DBusPipe *print_pid_pipe,
585 DBusError *error,
586 dbus_bool_t keep_umask);
587
588dbus_bool_t _dbus_verify_daemon_user (const char *user);
590 DBusError *error);
591
593 DBusPipe *print_pid_pipe,
594 dbus_pid_t pid_to_write,
595 DBusError *error);
596
597dbus_bool_t _dbus_command_for_pid (unsigned long pid,
598 DBusString *str,
599 int max_len,
600 DBusError *error);
601
602typedef enum {
603 DBUS_LOG_FLAGS_STDERR = (1 << 0),
604 DBUS_LOG_FLAGS_SYSTEM_LOG = (1 << 1)
605} DBusLogFlags;
606
607DBUS_PRIVATE_EXPORT
608void _dbus_init_system_log (const char *tag,
609 DBusLogFlags flags);
610
611typedef enum {
612 DBUS_SYSTEM_LOG_INFO,
613 DBUS_SYSTEM_LOG_WARNING,
614 DBUS_SYSTEM_LOG_SECURITY,
615 DBUS_SYSTEM_LOG_ERROR
616} DBusSystemLogSeverity;
617
618DBUS_PRIVATE_EXPORT
619void _dbus_log (DBusSystemLogSeverity severity,
620 const char *msg,
621 ...) _DBUS_GNUC_PRINTF (2, 3);
622DBUS_PRIVATE_EXPORT
623void _dbus_logv (DBusSystemLogSeverity severity,
624 const char *msg,
625 va_list args) _DBUS_GNUC_PRINTF (2, 0);
626
632#define _DBUS_DOUBLES_BITWISE_EQUAL(a, b) (memcmp (&(a), &(b), sizeof (double)) == 0)
633
635 DBusString *address,
636 DBusError *error);
637
638DBUS_PRIVATE_EXPORT
640 DBusString *address,
641 DBusError *error);
642
646typedef union DBusGUID DBusGUID;
647
648DBUS_PRIVATE_EXPORT
650 dbus_bool_t create_if_not_found,
651 DBusError *error);
652
659
664
669
670DBUS_PRIVATE_EXPORT
672 const char *suffix,
673 DBusList **dir_list);
674
675unsigned long _dbus_pid_for_log (void);
676
677/* FIXME move back to dbus-sysdeps-unix.h probably -
678 * the PID file handling just needs a little more abstraction
679 * in the bus daemon first.
680 */
681DBUS_PRIVATE_EXPORT
683
684DBUS_PRIVATE_EXPORT
686
687DBUS_PRIVATE_EXPORT
688void _dbus_flush_caches (void);
689
691
692/* Do not set this too high: it is a denial-of-service risk.
693 * See <https://bugs.freedesktop.org/show_bug.cgi?id=82820>
694 *
695 * (This needs to be in the non-Unix-specific header so that
696 * the config-parser can use it.)
697 */
698#define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16
699
700typedef struct DBusRLimit DBusRLimit;
701
702DBusRLimit *_dbus_rlimit_save_fd_limit (DBusError *error);
703dbus_bool_t _dbus_rlimit_raise_fd_limit (DBusError *error);
704dbus_bool_t _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
705 DBusError *error);
706void _dbus_rlimit_free (DBusRLimit *lim);
707
708void _dbus_daemon_report_ready (void);
712
713dbus_bool_t _dbus_inet_sockaddr_to_string (const void *sockaddr_pointer,
714 size_t len,
715 char *string,
716 size_t string_len,
717 const char **family_name,
718 dbus_uint16_t *port,
719 DBusError *error);
720void _dbus_set_error_with_inet_sockaddr (DBusError *error,
721 const void *sockaddr_pointer,
722 size_t len,
723 const char *description,
724 int saved_errno);
725void _dbus_combine_tcp_errors (DBusList **sources,
726 const char *summary,
727 const char *host,
728 const char *port,
729 DBusError *dest);
730
743#define _DBUS_MAX_SUN_PATH_LENGTH 99
744
748
749
750#ifdef DBUS_WIN
751#include "dbus-sysdeps-win.h"
752#endif
753
754#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:734
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:744
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:135
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:525
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:211
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:133
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:137
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:195
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:691
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:758
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:770
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:599
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:87
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:559
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:236
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:724
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:700
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:714
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:35
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:321
volatile dbus_int32_t value
Value of the atomic integer.
Definition: dbus-sysdeps.h:325
Internals of directory iterator.
Object representing an exception.
Definition: dbus-errors.h:49
A node in a linked list.
Definition: dbus-list.h:35
short events
Events to poll for.
Definition: dbus-sysdeps.h:418
short revents
Events that occurred.
Definition: dbus-sysdeps.h:419
DBusPollable fd
File descriptor.
Definition: dbus-sysdeps.h:417
Socket interface.
Definition: dbus-sysdeps.h:179
Portable struct with stat() results.
Definition: dbus-sysdeps.h:548
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:550
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:553
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:551
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:549
dbus_gid_t gid
Group owning file.
Definition: dbus-sysdeps.h:552
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:554
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:556
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:555
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...