D-Bus 1.12.20
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#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/* AIX sys/poll.h does #define events reqevents, and other
78 * wonderousness, so must include sys/poll before declaring
79 * DBusPollFD
80 */
81#ifdef HAVE_POLL
82#include <sys/poll.h>
83#endif
84
85#ifdef DBUS_WINCE
86/* Windows CE lacks some system functions (such as errno and clock).
87 We bring them in here. */
88#include "dbus-sysdeps-wince-glue.h"
89#endif
90
91#ifdef DBUS_WIN
92#include <ws2tcpip.h>
93#endif
94
96
97#ifdef DBUS_WIN
98#define _DBUS_PATH_SEPARATOR ";"
99#else
100#define _DBUS_PATH_SEPARATOR ":"
101#endif
102
103/* Forward declarations */
104
105
107typedef struct DBusList DBusList;
108
110typedef struct DBusCredentials DBusCredentials;
111
113typedef struct DBusPipe DBusPipe;
114
121DBUS_PRIVATE_EXPORT
122void _dbus_abort (void) _DBUS_GNUC_NORETURN;
123
125DBUS_PRIVATE_EXPORT
126const char* _dbus_getenv (const char *varname);
127DBUS_PRIVATE_EXPORT
129char ** _dbus_get_environment (void);
130
132typedef unsigned long dbus_pid_t;
134typedef unsigned long dbus_uid_t;
136typedef unsigned long dbus_gid_t;
137
139#define DBUS_PID_UNSET ((dbus_pid_t) -1)
141#define DBUS_UID_UNSET ((dbus_uid_t) -1)
143#define DBUS_GID_UNSET ((dbus_gid_t) -1)
144
146#define DBUS_PID_FORMAT "%lu"
148#define DBUS_UID_FORMAT "%lu"
150#define DBUS_GID_FORMAT "%lu"
151
155#ifdef DBUS_WIN
156
157typedef struct { SOCKET sock; } DBusSocket;
158# define DBUS_SOCKET_FORMAT "Iu"
159# define DBUS_SOCKET_INIT { INVALID_SOCKET }
160
161static inline SOCKET
162_dbus_socket_printable (DBusSocket s) { return s.sock; }
163
164static inline dbus_bool_t
165_dbus_socket_is_valid (DBusSocket s) { return s.sock != INVALID_SOCKET; }
166
167static inline void
168_dbus_socket_invalidate (DBusSocket *s) { s->sock = INVALID_SOCKET; }
169
170static inline int
171_dbus_socket_get_int (DBusSocket s) { return (int)s.sock; }
172
173#else /* not DBUS_WIN */
174
175typedef struct { int fd; } DBusSocket;
176# define DBUS_SOCKET_FORMAT "d"
177# define DBUS_SOCKET_INIT { -1 }
178
179static inline int
180_dbus_socket_printable (DBusSocket s) { return s.fd; }
181
182static inline dbus_bool_t
183_dbus_socket_is_valid (DBusSocket s) { return s.fd >= 0; }
184
185static inline void
186_dbus_socket_invalidate (DBusSocket *s) { s->fd = -1; }
187
188static inline int
189_dbus_socket_get_int (DBusSocket s) { return s.fd; }
190
191#endif /* not DBUS_WIN */
192
193static inline DBusSocket
194_dbus_socket_get_invalid (void)
195{
196 DBusSocket s = DBUS_SOCKET_INIT;
197
198 return s;
199}
200
202 DBusError *error);
203
204DBUS_PRIVATE_EXPORT
206 DBusError *error);
207DBUS_PRIVATE_EXPORT
209 DBusString *buffer,
210 int count);
211DBUS_PRIVATE_EXPORT
213 const DBusString *buffer,
214 int start,
215 int len);
217 const DBusString *buffer1,
218 int start1,
219 int len1,
220 const DBusString *buffer2,
221 int start2,
222 int len2);
223
225 DBusString *buffer,
226 int count,
227 int *fds,
228 unsigned int *n_fds);
229DBUS_PRIVATE_EXPORT
230int _dbus_write_socket_with_unix_fds (DBusSocket fd,
231 const DBusString *buffer,
232 int start,
233 int len,
234 const int *fds,
235 int n_fds);
236int _dbus_write_socket_with_unix_fds_two (DBusSocket fd,
237 const DBusString *buffer1,
238 int start1,
239 int len1,
240 const DBusString *buffer2,
241 int start2,
242 int len2,
243 const int *fds,
244 int n_fds);
245
246DBusSocket _dbus_connect_tcp_socket (const char *host,
247 const char *port,
248 const char *family,
249 DBusError *error);
250DBusSocket _dbus_connect_tcp_socket_with_nonce (const char *host,
251 const char *port,
252 const char *family,
253 const char *noncefile,
254 DBusError *error);
255int _dbus_listen_tcp_socket (const char *host,
256 const char *port,
257 const char *family,
258 DBusString *retport,
259 DBusSocket **fds_p,
260 DBusError *error);
262
264 DBusCredentials *credentials,
265 DBusError *error);
267 DBusError *error);
268
270 const DBusString *username);
272DBUS_PRIVATE_EXPORT
274
276 dbus_uid_t *uid_p);
278 dbus_gid_t *gid_p);
280 dbus_gid_t **group_ids,
281 int *n_group_ids,
282 DBusError *error);
284 DBusError *error);
286dbus_bool_t _dbus_windows_user_is_process_owner (const char *windows_sid);
287
289 DBusCredentials *credentials);
290
291dbus_bool_t _dbus_daemon_is_session_bus_address_published (const char *scope);
292
293dbus_bool_t _dbus_daemon_publish_session_bus_address (const char* address, const char* shm_name);
294
295void _dbus_daemon_unpublish_session_bus_address (void);
296
298
302typedef struct DBusAtomic DBusAtomic;
303
308{
309#ifdef DBUS_WIN
310 volatile long value;
311#else
313#endif
314};
315
316DBUS_PRIVATE_EXPORT
318DBUS_PRIVATE_EXPORT
320DBUS_PRIVATE_EXPORT
322
323#ifdef DBUS_WIN
324
325/* On Windows, you can only poll sockets. We emulate Unix poll() using
326 * select(), so it doesn't matter what precise type we put in DBusPollFD;
327 * use DBusSocket so that the compiler can check we are doing it right.
328 */
329typedef DBusSocket DBusPollable;
330# define DBUS_POLLABLE_FORMAT "Iu"
331
332static inline DBusPollable
333_dbus_socket_get_pollable (DBusSocket s) { return s; }
334
335static inline SOCKET
336_dbus_pollable_printable (DBusPollable p) { return p.sock; }
337
338static inline dbus_bool_t
339_dbus_pollable_is_valid (DBusPollable p) { return _dbus_socket_is_valid (p); }
340
341static inline void
342_dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
343
344static inline dbus_bool_t
345_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a.sock == b.sock; }
346
347#else /* !DBUS_WIN */
348
349/* On Unix, you can poll sockets, pipes, etc., and we must put exactly
350 * "int" in DBusPollFD because we're relying on its layout exactly matching
351 * struct pollfd. (This is silly, and one day we should use a better
352 * abstraction.)
353 */
354typedef int DBusPollable;
355# define DBUS_POLLABLE_FORMAT "d"
356
357static inline DBusPollable
358_dbus_socket_get_pollable (DBusSocket s) { return s.fd; }
359
360static inline int
361_dbus_pollable_printable (DBusPollable p) { return p; }
362
363static inline dbus_bool_t
364_dbus_pollable_is_valid (DBusPollable p) { return p >= 0; }
365
366static inline void
367_dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
368
369static inline dbus_bool_t
370_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a == b; }
371
372#endif /* !DBUS_WIN */
373
374#if defined(HAVE_POLL) && !defined(BROKEN_POLL)
379typedef struct pollfd DBusPollFD;
380
382#define _DBUS_POLLIN POLLIN
384#define _DBUS_POLLPRI POLLPRI
386#define _DBUS_POLLOUT POLLOUT
388#define _DBUS_POLLERR POLLERR
390#define _DBUS_POLLHUP POLLHUP
392#define _DBUS_POLLNVAL POLLNVAL
393#else
394/* Emulate poll() via select(). Because we aren't really going to call
395 * poll(), any similarly-shaped struct is acceptable, and any power of 2
396 * will do for the events/revents; these values happen to match Linux
397 * and *BSD. */
398typedef struct
399{
400 DBusPollable fd;
401 short events;
402 short revents;
403} DBusPollFD;
404
406#define _DBUS_POLLIN 0x0001
408#define _DBUS_POLLPRI 0x0002
410#define _DBUS_POLLOUT 0x0004
412#define _DBUS_POLLERR 0x0008
414#define _DBUS_POLLHUP 0x0010
416#define _DBUS_POLLNVAL 0x0020
417#endif
418
419DBUS_PRIVATE_EXPORT
420int _dbus_poll (DBusPollFD *fds,
421 int n_fds,
422 int timeout_milliseconds);
423
424DBUS_PRIVATE_EXPORT
425void _dbus_sleep_milliseconds (int milliseconds);
426
427DBUS_PRIVATE_EXPORT
428void _dbus_get_monotonic_time (long *tv_sec,
429 long *tv_usec);
430
431DBUS_PRIVATE_EXPORT
432void _dbus_get_real_time (long *tv_sec,
433 long *tv_usec);
434
438DBUS_PRIVATE_EXPORT
440 DBusError *error);
441DBUS_PRIVATE_EXPORT
443 DBusError *error);
444DBUS_PRIVATE_EXPORT
446 DBusError *error);
447
448DBUS_PRIVATE_EXPORT
450 const DBusString *next_component);
452 DBusString *dirname);
453DBUS_PRIVATE_EXPORT
455
459 DBusError *error);
460
463
466
468 DBusError *error);
470 DBusString *filename,
471 DBusError *error);
473
475 DBusError *error);
476
477DBUS_PRIVATE_EXPORT
478const char* _dbus_get_tmpdir (void);
479
483_DBUS_GNUC_WARN_UNUSED_RESULT
485 int n_bytes,
486 DBusError *error);
488 int n_bytes,
489 DBusError *error);
490DBUS_PRIVATE_EXPORT
492 int n_bytes,
493 DBusError *error);
494
495DBUS_PRIVATE_EXPORT
496const char* _dbus_error_from_errno (int error_number);
497DBUS_PRIVATE_EXPORT
498const char* _dbus_error_from_system_errno (void);
499
500int _dbus_save_socket_errno (void);
501void _dbus_restore_socket_errno (int saved_errno);
502void _dbus_set_errno_to_zero (void);
508DBUS_PRIVATE_EXPORT
509const char* _dbus_strerror_from_errno (void);
510
511void _dbus_disable_sigpipe (void);
512
513DBUS_PRIVATE_EXPORT
514void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
515
516DBUS_PRIVATE_EXPORT
517int _dbus_printf_string_upper_bound (const char *format,
518 va_list args) _DBUS_GNUC_PRINTF (1, 0);
519
520#ifdef DBUS_ENABLE_VERBOSE_MODE
521DBUS_PRIVATE_EXPORT
522void _dbus_print_thread (void);
523#endif
524
528typedef struct
529{
530 unsigned long mode;
531 unsigned long nlink;
534 unsigned long size;
535 unsigned long atime;
536 unsigned long mtime;
537 unsigned long ctime;
538} DBusStat;
539
540dbus_bool_t _dbus_stat (const DBusString *filename,
541 DBusStat *statbuf,
542 DBusError *error);
543DBUS_PRIVATE_EXPORT
545 DBusSocket *fd2,
546 dbus_bool_t blocking,
547 DBusError *error);
548
549DBUS_PRIVATE_EXPORT
550void _dbus_print_backtrace (void);
551
553 DBusPipe *print_pid_pipe,
554 DBusError *error,
555 dbus_bool_t keep_umask);
556
557dbus_bool_t _dbus_verify_daemon_user (const char *user);
559 DBusError *error);
560
562 DBusPipe *print_pid_pipe,
563 dbus_pid_t pid_to_write,
564 DBusError *error);
565
566dbus_bool_t _dbus_command_for_pid (unsigned long pid,
567 DBusString *str,
568 int max_len,
569 DBusError *error);
570
571dbus_bool_t _dbus_user_at_console (const char *username,
572 DBusError *error);
573
574typedef enum {
575 DBUS_LOG_FLAGS_STDERR = (1 << 0),
576 DBUS_LOG_FLAGS_SYSTEM_LOG = (1 << 1)
577} DBusLogFlags;
578
579DBUS_PRIVATE_EXPORT
580void _dbus_init_system_log (const char *tag,
581 DBusLogFlags flags);
582
583typedef enum {
584 DBUS_SYSTEM_LOG_INFO,
585 DBUS_SYSTEM_LOG_WARNING,
586 DBUS_SYSTEM_LOG_SECURITY,
587 DBUS_SYSTEM_LOG_ERROR
588} DBusSystemLogSeverity;
589
590DBUS_PRIVATE_EXPORT
591void _dbus_log (DBusSystemLogSeverity severity,
592 const char *msg,
593 ...) _DBUS_GNUC_PRINTF (2, 3);
594DBUS_PRIVATE_EXPORT
595void _dbus_logv (DBusSystemLogSeverity severity,
596 const char *msg,
597 va_list args) _DBUS_GNUC_PRINTF (2, 0);
598
599/* Define DBUS_VA_COPY() to do the right thing for copying va_list variables.
600 * config.h may have already defined DBUS_VA_COPY as va_copy or __va_copy.
601 */
602#if !defined (DBUS_VA_COPY)
603# if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
604# define DBUS_VA_COPY(ap1, ap2) (*(ap1) = *(ap2))
605# elif defined (DBUS_VA_COPY_AS_ARRAY)
606# define DBUS_VA_COPY(ap1, ap2) memcpy ((ap1), (ap2), sizeof (va_list))
607# else /* va_list is a pointer */
608# define DBUS_VA_COPY(ap1, ap2) ((ap1) = (ap2))
609# endif /* va_list is a pointer */
610#endif /* !DBUS_VA_COPY */
611
612
617#define _DBUS_BYTE_OF_PRIMITIVE(p, i) \
618 (((const char*)&(p))[(i)])
624#define _DBUS_DOUBLES_BITWISE_EQUAL(a, b) \
625 (_DBUS_BYTE_OF_PRIMITIVE (a, 0) == _DBUS_BYTE_OF_PRIMITIVE (b, 0) && \
626 _DBUS_BYTE_OF_PRIMITIVE (a, 1) == _DBUS_BYTE_OF_PRIMITIVE (b, 1) && \
627 _DBUS_BYTE_OF_PRIMITIVE (a, 2) == _DBUS_BYTE_OF_PRIMITIVE (b, 2) && \
628 _DBUS_BYTE_OF_PRIMITIVE (a, 3) == _DBUS_BYTE_OF_PRIMITIVE (b, 3) && \
629 _DBUS_BYTE_OF_PRIMITIVE (a, 4) == _DBUS_BYTE_OF_PRIMITIVE (b, 4) && \
630 _DBUS_BYTE_OF_PRIMITIVE (a, 5) == _DBUS_BYTE_OF_PRIMITIVE (b, 5) && \
631 _DBUS_BYTE_OF_PRIMITIVE (a, 6) == _DBUS_BYTE_OF_PRIMITIVE (b, 6) && \
632 _DBUS_BYTE_OF_PRIMITIVE (a, 7) == _DBUS_BYTE_OF_PRIMITIVE (b, 7))
633
635 DBusString *address,
636 DBusError *error);
637
639 DBusString *address,
640 DBusError *error);
641
645typedef union DBusGUID DBusGUID;
646
647DBUS_PRIVATE_EXPORT
649 dbus_bool_t create_if_not_found,
650 DBusError *error);
651
658
663
668
669DBUS_PRIVATE_EXPORT
671 const char *suffix,
672 DBusList **dir_list);
673
674unsigned long _dbus_pid_for_log (void);
675
676/* FIXME move back to dbus-sysdeps-unix.h probably -
677 * the PID file handling just needs a little more abstraction
678 * in the bus daemon first.
679 */
680DBUS_PRIVATE_EXPORT
682
683DBUS_PRIVATE_EXPORT
685
686DBUS_PRIVATE_EXPORT
687void _dbus_flush_caches (void);
688
690
691/* Do not set this too high: it is a denial-of-service risk.
692 * See <https://bugs.freedesktop.org/show_bug.cgi?id=82820>
693 *
694 * (This needs to be in the non-Unix-specific header so that
695 * the config-parser can use it.)
696 */
697#define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16
698
699typedef struct DBusRLimit DBusRLimit;
700
701DBusRLimit *_dbus_rlimit_save_fd_limit (DBusError *error);
702dbus_bool_t _dbus_rlimit_raise_fd_limit (DBusError *error);
703dbus_bool_t _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
704 DBusError *error);
705void _dbus_rlimit_free (DBusRLimit *lim);
706
707#ifdef DBUS_ENABLE_EMBEDDED_TESTS
708_DBUS_GNUC_WARN_UNUSED_RESULT
709dbus_bool_t _dbus_test_append_different_uid (DBusString *uid);
710
711#ifdef DBUS_UNIX
712_DBUS_GNUC_WARN_UNUSED_RESULT
713dbus_bool_t _dbus_test_append_different_username (DBusString *username);
714#endif
715#endif /* DBUS_ENABLE_EMBEDDED_TESTS */
716
717void _dbus_daemon_report_ready (void);
721
725
726
727#ifdef DBUS_WIN
728#include "dbus-sysdeps-win.h"
729#endif
730
731#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:727
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:737
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:134
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)
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:203
unsigned long dbus_pid_t
A process ID.
Definition: dbus-sysdeps.h:132
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 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:136
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_user_at_console(const char *username, DBusError *error)
Checks if user is at the console.
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_GNUC_WARN_UNUSED_RESULT dbus_bool_t _dbus_generate_random_bytes_buffer(char *buffer, int n_bytes, DBusError *error)
Random numbers.
Definition: dbus-sysdeps.c:518
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_PRIVATE_EXPORT dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
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:187
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 const char * _dbus_error_from_system_errno(void)
Converts the current system errno value into a DBusError name.
Definition: dbus-sysdeps.c:684
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_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:751
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:763
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_parse_unix_group_from_config(const DBusString *groupname, dbus_gid_t *gid_p)
Parse a UNIX group from the bus config file.
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_bool_t _dbus_unix_groups_from_uid(dbus_uid_t uid, dbus_gid_t **group_ids, int *n_group_ids, DBusError *error)
Gets all groups corresponding to the given UNIX user ID.
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 credentials of the current process to the passed-in credentials object.
void _dbus_daemon_report_stopping(void)
Report to a service manager that the daemon calling this function is shutting down.
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:592
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:79
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:552
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.
dbus_bool_t _dbus_credentials_add_from_user(DBusCredentials *credentials, const DBusString *username)
Adds the credentials corresponding to the given username.
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:228
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.
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.
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:717
dbus_bool_t _dbus_threads_init_platform_specific(void)
Initialize threads as in dbus_threads_init_default(), appropriately for the platform.
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.
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:693
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:707
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
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:308
volatile dbus_int32_t value
Value of the atomic integer.
Definition: dbus-sysdeps.h:312
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:401
short revents
Events that occurred.
Definition: dbus-sysdeps.h:402
DBusPollable fd
File descriptor.
Definition: dbus-sysdeps.h:400
Socket interface.
Definition: dbus-sysdeps.h:175
Portable struct with stat() results.
Definition: dbus-sysdeps.h:529
unsigned long nlink
Number of hard links.
Definition: dbus-sysdeps.h:531
unsigned long size
Size of file.
Definition: dbus-sysdeps.h:534
dbus_uid_t uid
User owning file.
Definition: dbus-sysdeps.h:532
unsigned long mode
File mode.
Definition: dbus-sysdeps.h:530
dbus_gid_t gid
Group owning file.
Definition: dbus-sysdeps.h:533
unsigned long atime
Access time.
Definition: dbus-sysdeps.h:535
unsigned long ctime
Creation time.
Definition: dbus-sysdeps.h:537
unsigned long mtime
Modify time.
Definition: dbus-sysdeps.h:536
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...