/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-sysdeps.h Wrappers around system/libc features (internal to D-Bus implementation)
*
* Copyright (C) 2002, 2003 Red Hat, Inc.
* Copyright (C) 2003 CodeFactory AB
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef DBUS_SYSDEPS_H
#define DBUS_SYSDEPS_H
#ifndef VERSION
#warning Please include config.h before dbus-sysdeps.h
#include "config.h"
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#include <dbus/dbus-errors.h>
#include <dbus/dbus-file.h>
#include <dbus/dbus-string.h>
/* this is perhaps bogus, but strcmp() etc. are faster if we use the
* stuff straight out of string.h, so have this here for now.
*/
#include <string.h>
#include <stdarg.h>
#if !defined(BROKEN_POLL) && (defined(__APPLE__) || defined(__INTERIX))
/* Following libcurl's example, we blacklist poll() on Darwin
* (macOS, iOS, etc.) and Interix due to a history of implementation
* issues.
* https://github.com/curl/curl/blob/master/m4/curl-functions.m4
*
* On unspecified older macOS versions, poll() failed if given a
* device node to poll.
*
* On macOS < 10.9, poll() with nfds=0 failed instead of waiting for
* the timeout and then succeeding.
*
* On macOS >= 10.12, poll() with nfds=0 succeeded immediately
* instead of waiting for the timeout, resulting in busy-looping.
*
* On Interix, poll() apparently only works for files in /proc.
*
* The "legacy" build flavour in our CI machinery defines BROKEN_POLL
* on whatever platform is in use (normally Linux) to force use of the
* same select()-based poll() emulation that we use for macOS, Interix,
* and any platform that lacks a real poll(), so that we can test it
* more regularly.
*/
# define BROKEN_POLL
#endif
/* AIX sys/poll.h does #define events reqevents, and other
* wonderousness, so must include sys/poll before declaring
* DBusPollFD
*/
#ifdef HAVE_POLL
#include <sys/poll.h>
#endif
#ifdef DBUS_WINCE
/* Windows CE lacks some system functions (such as errno and clock).
We bring them in here. */
#include "dbus-sysdeps-wince-glue.h"
#endif
#ifdef DBUS_WIN
#include <ws2tcpip.h>
#endif
DBUS_BEGIN_DECLS
#ifdef DBUS_WIN
#define _DBUS_PATH_SEPARATOR ";"
#else
#define _DBUS_PATH_SEPARATOR ":"
#endif
/* Forward declarations */
/** An opaque list type */
typedef struct DBusList DBusList;
/** Object that contains a list of credentials such as UNIX or Windows user ID */
typedef struct DBusCredentials DBusCredentials;
/** A wrapper around a pipe descriptor or handle */
typedef struct DBusPipe DBusPipe;
/**
* @addtogroup DBusSysdeps
*
* @{
*/
DBUS_PRIVATE_EXPORT
void _dbus_abort (void) _DBUS_GNUC_NORETURN;
dbus_bool_t _dbus_check_setuid (void);
DBUS_PRIVATE_EXPORT
const char* _dbus_getenv (const char *varname);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_clearenv (void);
char ** _dbus_get_environment (void);
/** A process ID */
typedef unsigned long dbus_pid_t;
/** A user ID */
typedef unsigned long dbus_uid_t;
/** A group ID */
typedef unsigned long dbus_gid_t;
/** an invalid PID used to represent an uninitialized dbus_pid_t field */
#define DBUS_PID_UNSET ((dbus_pid_t) -1)
/** an invalid UID used to represent an uninitialized dbus_uid_t field */
#define DBUS_UID_UNSET ((dbus_uid_t) -1)
/** an invalid GID used to represent an uninitialized dbus_gid_t field */
#define DBUS_GID_UNSET ((dbus_gid_t) -1)
/** an appropriate printf format for dbus_pid_t */
#define DBUS_PID_FORMAT "%lu"
/** an appropriate printf format for dbus_uid_t */
#define DBUS_UID_FORMAT "%lu"
/** an appropriate printf format for dbus_gid_t */
#define DBUS_GID_FORMAT "%lu"
/**
* Socket interface
*/
#ifdef DBUS_WIN
typedef struct { SOCKET sock; } DBusSocket;
# define DBUS_SOCKET_FORMAT "Iu"
# define DBUS_SOCKET_INIT { INVALID_SOCKET }
static inline SOCKET
_dbus_socket_printable (DBusSocket s) { return s.sock; }
static inline dbus_bool_t
_dbus_socket_is_valid (DBusSocket s) { return s.sock != INVALID_SOCKET; }
static inline void
_dbus_socket_invalidate (DBusSocket *s) { s->sock = INVALID_SOCKET; }
static inline int
_dbus_socket_get_int (DBusSocket s) { return (int)s.sock; }
#else /* not DBUS_WIN */
typedef struct { int fd; } DBusSocket;
# define DBUS_SOCKET_FORMAT "d"
# define DBUS_SOCKET_INIT { -1 }
static inline int
_dbus_socket_printable (DBusSocket s) { return s.fd; }
static inline dbus_bool_t
_dbus_socket_is_valid (DBusSocket s) { return s.fd >= 0; }
static inline void
_dbus_socket_invalidate (DBusSocket *s) { s->fd = -1; }
static inline int
_dbus_socket_get_int (DBusSocket s) { return s.fd; }
#endif /* not DBUS_WIN */
static inline DBusSocket
_dbus_socket_get_invalid (void)
{
DBusSocket s = DBUS_SOCKET_INIT;
return s;
}
dbus_bool_t _dbus_set_socket_nonblocking (DBusSocket fd,
DBusError *error);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_close_socket (DBusSocket fd,
DBusError *error);
DBUS_PRIVATE_EXPORT
int _dbus_read_socket (DBusSocket fd,
DBusString *buffer,
int count);
DBUS_PRIVATE_EXPORT
int _dbus_write_socket (DBusSocket fd,
const DBusString *buffer,
int start,
int len);
int _dbus_write_socket_two (DBusSocket fd,
const DBusString *buffer1,
int start1,
int len1,
const DBusString *buffer2,
int start2,
int len2);
int _dbus_read_socket_with_unix_fds (DBusSocket fd,
DBusString *buffer,
int count,
int *fds,
unsigned int *n_fds);
DBUS_PRIVATE_EXPORT
int _dbus_write_socket_with_unix_fds (DBusSocket fd,
const DBusString *buffer,
int start,
int len,
const int *fds,
int n_fds);
int _dbus_write_socket_with_unix_fds_two (DBusSocket fd,
const DBusString *buffer1,
int start1,
int len1,
const DBusString *buffer2,
int start2,
int len2,
const int *fds,
int n_fds);
DBusSocket _dbus_connect_tcp_socket (const char *host,
const char *port,
const char *family,
DBusError *error);
DBusSocket _dbus_connect_tcp_socket_with_nonce (const char *host,
const char *port,
const char *family,
const char *noncefile,
DBusError *error);
int _dbus_listen_tcp_socket (const char *host,
const char *port,
const char *family,
DBusString *retport,
DBusSocket **fds_p,
DBusError *error);
DBusSocket _dbus_accept (DBusSocket listen_fd);
dbus_bool_t _dbus_read_credentials_socket (DBusSocket client_fd,
DBusCredentials *credentials,
DBusError *error);
dbus_bool_t _dbus_send_credentials_socket (DBusSocket server_fd,
DBusError *error);
dbus_bool_t _dbus_credentials_add_from_user (DBusCredentials *credentials,
const DBusString *username);
dbus_bool_t _dbus_credentials_add_from_current_process (DBusCredentials *credentials);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_append_user_from_current_process (DBusString *str);
dbus_bool_t _dbus_parse_unix_user_from_config (const DBusString *username,
dbus_uid_t *uid_p);
dbus_bool_t _dbus_parse_unix_group_from_config (const DBusString *groupname,
dbus_gid_t *gid_p);
dbus_bool_t _dbus_unix_groups_from_uid (dbus_uid_t uid,
dbus_gid_t **group_ids,
int *n_group_ids);
dbus_bool_t _dbus_unix_user_is_at_console (dbus_uid_t uid,
DBusError *error);
dbus_bool_t _dbus_unix_user_is_process_owner (dbus_uid_t uid);
dbus_bool_t _dbus_windows_user_is_process_owner (const char *windows_sid);
dbus_bool_t _dbus_append_keyring_directory_for_credentials (DBusString *directory,
DBusCredentials *credentials);
dbus_bool_t _dbus_daemon_is_session_bus_address_published (const char *scope);
dbus_bool_t _dbus_daemon_publish_session_bus_address (const char* address, const char* shm_name);
void _dbus_daemon_unpublish_session_bus_address (void);
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd);
/** Opaque type representing an atomically-modifiable integer
* that can be used from multiple threads.
*/
typedef struct DBusAtomic DBusAtomic;
/**
* An atomic integer safe to increment or decrement from multiple threads.
*/
struct DBusAtomic
{
#ifdef DBUS_WIN
volatile long value; /**< Value of the atomic integer. */
#else
volatile dbus_int32_t value; /**< Value of the atomic integer. */
#endif
};
DBUS_PRIVATE_EXPORT
dbus_int32_t _dbus_atomic_inc (DBusAtomic *atomic);
DBUS_PRIVATE_EXPORT
dbus_int32_t _dbus_atomic_dec (DBusAtomic *atomic);
DBUS_PRIVATE_EXPORT
dbus_int32_t _dbus_atomic_get (DBusAtomic *atomic);
#ifdef DBUS_WIN
/* On Windows, you can only poll sockets. We emulate Unix poll() using
* select(), so it doesn't matter what precise type we put in DBusPollFD;
* use DBusSocket so that the compiler can check we are doing it right.
*/
typedef DBusSocket DBusPollable;
# define DBUS_POLLABLE_FORMAT "Iu"
static inline DBusPollable
_dbus_socket_get_pollable (DBusSocket s) { return s; }
static inline SOCKET
_dbus_pollable_printable (DBusPollable p) { return p.sock; }
static inline dbus_bool_t
_dbus_pollable_is_valid (DBusPollable p) { return _dbus_socket_is_valid (p); }
static inline void
_dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
static inline dbus_bool_t
_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a.sock == b.sock; }
#else /* !DBUS_WIN */
/* On Unix, you can poll sockets, pipes, etc., and we must put exactly
* "int" in DBusPollFD because we're relying on its layout exactly matching
* struct pollfd. (This is silly, and one day we should use a better
* abstraction.)
*/
typedef int DBusPollable;
# define DBUS_POLLABLE_FORMAT "d"
static inline DBusPollable
_dbus_socket_get_pollable (DBusSocket s) { return s.fd; }
static inline int
_dbus_pollable_printable (DBusPollable p) { return p; }
static inline dbus_bool_t
_dbus_pollable_is_valid (DBusPollable p) { return p >= 0; }
static inline void
_dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
static inline dbus_bool_t
_dbus_pollable_equals (DBusPollable a, DBusPollable b) { return a == b; }
#endif /* !DBUS_WIN */
#if defined(HAVE_POLL) && !defined(BROKEN_POLL)
/**
* A portable struct pollfd wrapper, or an emulation of struct pollfd
* on platforms where poll() is missing or broken.
*/
typedef struct pollfd DBusPollFD;
/** There is data to read */
#define _DBUS_POLLIN POLLIN
/** There is urgent data to read */
#define _DBUS_POLLPRI POLLPRI
/** Writing now will not block */
#define _DBUS_POLLOUT POLLOUT
/** Error condition */
#define _DBUS_POLLERR POLLERR
/** Hung up */
#define _DBUS_POLLHUP POLLHUP
/** Invalid request: fd not open */
#define _DBUS_POLLNVAL POLLNVAL
#else
/* Emulate poll() via select(). Because we aren't really going to call
* poll(), any similarly-shaped struct is acceptable, and any power of 2
* will do for the events/revents; these values happen to match Linux
* and *BSD. */
typedef struct
{
DBusPollable fd; /**< File descriptor */
short events; /**< Events to poll for */
short revents; /**< Events that occurred */
} DBusPollFD;
/** There is data to read */
#define _DBUS_POLLIN 0x0001
/** There is urgent data to read */
#define _DBUS_POLLPRI 0x0002
/** Writing now will not block */
#define _DBUS_POLLOUT 0x0004
/** Error condition */
#define _DBUS_POLLERR 0x0008
/** Hung up */
#define _DBUS_POLLHUP 0x0010
/** Invalid request: fd not open */
#define _DBUS_POLLNVAL 0x0020
#endif
DBUS_PRIVATE_EXPORT
int _dbus_poll (DBusPollFD *fds,
int n_fds,
int timeout_milliseconds);
DBUS_PRIVATE_EXPORT
void _dbus_sleep_milliseconds (int milliseconds);
DBUS_PRIVATE_EXPORT
void _dbus_get_monotonic_time (long *tv_sec,
long *tv_usec);
DBUS_PRIVATE_EXPORT
void _dbus_get_real_time (long *tv_sec,
long *tv_usec);
/**
* directory interface
*/
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_create_directory (const DBusString *filename,
DBusError *error);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_ensure_directory (const DBusString *filename,
DBusError *error);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_delete_directory (const DBusString *filename,
DBusError *error);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_concat_dir_and_file (DBusString *dir,
const DBusString *next_component);
dbus_bool_t _dbus_string_get_dirname (const DBusString *filename,
DBusString *dirname);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_path_is_absolute (const DBusString *filename);
dbus_bool_t _dbus_get_standard_session_servicedirs (DBusList **dirs);
dbus_bool_t _dbus_get_standard_system_servicedirs (DBusList **dirs);
dbus_bool_t _dbus_set_up_transient_session_servicedirs (DBusList **dirs,
DBusError *error);
dbus_bool_t _dbus_get_system_config_file (DBusString *str);
dbus_bool_t _dbus_get_session_config_file (DBusString *str);
/** Opaque type for reading a directory listing */
typedef struct DBusDirIter DBusDirIter;
DBusDirIter* _dbus_directory_open (const DBusString *filename,
DBusError *error);
dbus_bool_t _dbus_directory_get_next_file (DBusDirIter *iter,
DBusString *filename,
DBusError *error);
void _dbus_directory_close (DBusDirIter *iter);
dbus_bool_t _dbus_check_dir_is_private_to_user (DBusString *dir,
DBusError *error);
DBUS_PRIVATE_EXPORT
const char* _dbus_get_tmpdir (void);
/**
* Random numbers
*/
_DBUS_GNUC_WARN_UNUSED_RESULT
dbus_bool_t _dbus_generate_random_bytes_buffer (char *buffer,
int n_bytes,
DBusError *error);
dbus_bool_t _dbus_generate_random_bytes (DBusString *str,
int n_bytes,
DBusError *error);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_generate_random_ascii (DBusString *str,
int n_bytes,
DBusError *error);
DBUS_PRIVATE_EXPORT
const char* _dbus_error_from_errno (int error_number);
DBUS_PRIVATE_EXPORT
const char* _dbus_error_from_system_errno (void);
int _dbus_save_socket_errno (void);
void _dbus_restore_socket_errno (int saved_errno);
void _dbus_set_errno_to_zero (void);
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock (int e);
dbus_bool_t _dbus_get_is_errno_enomem (int e);
dbus_bool_t _dbus_get_is_errno_eintr (int e);
dbus_bool_t _dbus_get_is_errno_epipe (int e);
dbus_bool_t _dbus_get_is_errno_etoomanyrefs (int e);
DBUS_PRIVATE_EXPORT
const char* _dbus_strerror_from_errno (void);
void _dbus_disable_sigpipe (void);
DBUS_PRIVATE_EXPORT
void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
DBUS_PRIVATE_EXPORT
int _dbus_printf_string_upper_bound (const char *format,
va_list args) _DBUS_GNUC_PRINTF (1, 0);
#ifdef DBUS_ENABLE_VERBOSE_MODE
DBUS_PRIVATE_EXPORT
void _dbus_print_thread (void);
#endif
/**
* Portable struct with stat() results
*/
typedef struct
{
unsigned long mode; /**< File mode */
unsigned long nlink; /**< Number of hard links */
dbus_uid_t uid; /**< User owning file */
dbus_gid_t gid; /**< Group owning file */
unsigned long size; /**< Size of file */
unsigned long atime; /**< Access time */
unsigned long mtime; /**< Modify time */
unsigned long ctime; /**< Creation time */
} DBusStat;
dbus_bool_t _dbus_stat (const DBusString *filename,
DBusStat *statbuf,
DBusError *error);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_socketpair (DBusSocket *fd1,
DBusSocket *fd2,
dbus_bool_t blocking,
DBusError *error);
DBUS_PRIVATE_EXPORT
void _dbus_print_backtrace (void);
dbus_bool_t _dbus_become_daemon (const DBusString *pidfile,
DBusPipe *print_pid_pipe,
DBusError *error,
dbus_bool_t keep_umask);
dbus_bool_t _dbus_verify_daemon_user (const char *user);
dbus_bool_t _dbus_change_to_daemon_user (const char *user,
DBusError *error);
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);
dbus_bool_t _dbus_command_for_pid (unsigned long pid,
DBusString *str,
int max_len,
DBusError *error);
dbus_bool_t _dbus_user_at_console (const char *username,
DBusError *error);
typedef enum {
DBUS_LOG_FLAGS_STDERR = (1 << 0),
DBUS_LOG_FLAGS_SYSTEM_LOG = (1 << 1)
} DBusLogFlags;
DBUS_PRIVATE_EXPORT
void _dbus_init_system_log (const char *tag,
DBusLogFlags flags);
typedef enum {
DBUS_SYSTEM_LOG_INFO,
DBUS_SYSTEM_LOG_WARNING,
DBUS_SYSTEM_LOG_SECURITY,
DBUS_SYSTEM_LOG_ERROR
} DBusSystemLogSeverity;
DBUS_PRIVATE_EXPORT
void _dbus_log (DBusSystemLogSeverity severity,
const char *msg,
...) _DBUS_GNUC_PRINTF (2, 3);
DBUS_PRIVATE_EXPORT
void _dbus_logv (DBusSystemLogSeverity severity,
const char *msg,
va_list args) _DBUS_GNUC_PRINTF (2, 0);
/* Define DBUS_VA_COPY() to do the right thing for copying va_list variables.
* config.h may have already defined DBUS_VA_COPY as va_copy or __va_copy.
*/
#if !defined (DBUS_VA_COPY)
# if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
# define DBUS_VA_COPY(ap1, ap2) (*(ap1) = *(ap2))
# elif defined (DBUS_VA_COPY_AS_ARRAY)
# define DBUS_VA_COPY(ap1, ap2) memcpy ((ap1), (ap2), sizeof (va_list))
# else /* va_list is a pointer */
# define DBUS_VA_COPY(ap1, ap2) ((ap1) = (ap2))
# endif /* va_list is a pointer */
#endif /* !DBUS_VA_COPY */
/**
* Casts a primitive C type to a byte array and then indexes
* a particular byte of the array.
*/
#define _DBUS_BYTE_OF_PRIMITIVE(p, i) \
(((const char*)&(p))[(i)])
/** On x86 there is an 80-bit FPU, and if you do "a == b" it may have a
* or b in an 80-bit register, thus failing to compare the two 64-bit
* doubles for bitwise equality. So this macro compares the two doubles
* bitwise.
*/
#define _DBUS_DOUBLES_BITWISE_EQUAL(a, b) \
(_DBUS_BYTE_OF_PRIMITIVE (a, 0) == _DBUS_BYTE_OF_PRIMITIVE (b, 0) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 1) == _DBUS_BYTE_OF_PRIMITIVE (b, 1) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 2) == _DBUS_BYTE_OF_PRIMITIVE (b, 2) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 3) == _DBUS_BYTE_OF_PRIMITIVE (b, 3) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 4) == _DBUS_BYTE_OF_PRIMITIVE (b, 4) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 5) == _DBUS_BYTE_OF_PRIMITIVE (b, 5) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 6) == _DBUS_BYTE_OF_PRIMITIVE (b, 6) && \
_DBUS_BYTE_OF_PRIMITIVE (a, 7) == _DBUS_BYTE_OF_PRIMITIVE (b, 7))
dbus_bool_t _dbus_get_autolaunch_address (const char *scope,
DBusString *address,
DBusError *error);
dbus_bool_t _dbus_lookup_session_address (dbus_bool_t *supported,
DBusString *address,
DBusError *error);
/** Type representing a universally unique ID
* @todo rename to UUID instead of GUID
*/
typedef union DBusGUID DBusGUID;
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id,
dbus_bool_t create_if_not_found,
DBusError *error);
/**
* Initialize threads as in dbus_threads_init_default(), appropriately
* for the platform.
* @returns #FALSE if no memory
*/
dbus_bool_t _dbus_threads_init_platform_specific (void);
/**
* Lock a static mutex used to protect _dbus_threads_init_platform_specific().
*/
void _dbus_threads_lock_platform_specific (void);
/**
* Undo _dbus_threads_lock_platform_specific().
*/
void _dbus_threads_unlock_platform_specific (void);
DBUS_PRIVATE_EXPORT
dbus_bool_t _dbus_split_paths_and_append (DBusString *dirs,
const char *suffix,
DBusList **dir_list);
unsigned long _dbus_pid_for_log (void);
/* FIXME move back to dbus-sysdeps-unix.h probably -
* the PID file handling just needs a little more abstraction
* in the bus daemon first.
*/
DBUS_PRIVATE_EXPORT
dbus_pid_t _dbus_getpid (void);
DBUS_PRIVATE_EXPORT
dbus_uid_t _dbus_getuid (void);
DBUS_PRIVATE_EXPORT
void _dbus_flush_caches (void);
dbus_bool_t _dbus_replace_install_prefix (DBusString *path);
/* Do not set this too high: it is a denial-of-service risk.
* See <https://bugs.freedesktop.org/show_bug.cgi?id=82820>
*
* (This needs to be in the non-Unix-specific header so that
* the config-parser can use it.)
*/
#define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16
typedef struct DBusRLimit DBusRLimit;
DBusRLimit *_dbus_rlimit_save_fd_limit (DBusError *error);
dbus_bool_t _dbus_rlimit_raise_fd_limit (DBusError *error);
dbus_bool_t _dbus_rlimit_restore_fd_limit (DBusRLimit *saved,
DBusError *error);
void _dbus_rlimit_free (DBusRLimit *lim);
#ifdef DBUS_ENABLE_EMBEDDED_TESTS
_DBUS_GNUC_WARN_UNUSED_RESULT
dbus_bool_t _dbus_test_append_different_uid (DBusString *uid);
#ifdef DBUS_UNIX
_DBUS_GNUC_WARN_UNUSED_RESULT
dbus_bool_t _dbus_test_append_different_username (DBusString *username);
#endif
#endif /* DBUS_ENABLE_EMBEDDED_TESTS */
/** @} */
DBUS_END_DECLS
#ifdef DBUS_WIN
#include "dbus-sysdeps-win.h"
#endif
#endif /* DBUS_SYSDEPS_H */