25 #ifndef DBUS_SYSDEPS_H    26 #define DBUS_SYSDEPS_H    29 #warning Please include config.h before dbus-sysdeps.h    37 #ifdef HAVE_INTTYPES_H    41 #include <dbus/dbus-errors.h>    42 #include <dbus/dbus-file.h>    43 #include <dbus/dbus-string.h>    62 #include "dbus-sysdeps-wince-glue.h"    72 #define _DBUS_PATH_SEPARATOR ";"    74 #define _DBUS_PATH_SEPARATOR ":"   112 #define DBUS_PID_UNSET ((dbus_pid_t) -1)   114 #define DBUS_UID_UNSET ((dbus_uid_t) -1)   116 #define DBUS_GID_UNSET ((dbus_gid_t) -1)   119 #define DBUS_PID_FORMAT "%lu"   121 #define DBUS_UID_FORMAT "%lu"   123 #define DBUS_GID_FORMAT "%lu"   131 # define DBUS_SOCKET_FORMAT "Iu"   132 # define DBUS_SOCKET_INIT { INVALID_SOCKET }   135 _dbus_socket_printable (
DBusSocket s) { 
return s.sock; }
   138 _dbus_socket_is_valid (
DBusSocket s) { 
return s.sock != INVALID_SOCKET; }
   141 _dbus_socket_invalidate (
DBusSocket *s) { s->sock = INVALID_SOCKET; }
   144 _dbus_socket_get_int (
DBusSocket s) { 
return (
int)s.sock; }
   149 # define DBUS_SOCKET_FORMAT "d"   150 # define DBUS_SOCKET_INIT { -1 }   153 _dbus_socket_printable (
DBusSocket s) { 
return s.fd; }
   156 _dbus_socket_is_valid (
DBusSocket s) { 
return s.fd >= 0; }
   159 _dbus_socket_invalidate (
DBusSocket *s) { s->fd = -1; }
   162 _dbus_socket_get_int (
DBusSocket s) { 
return s.fd; }
   167 _dbus_socket_get_invalid (
void)
   203 int _dbus_write_socket_with_unix_fds     (
DBusSocket        fd,
   209 int _dbus_write_socket_with_unix_fds_two (
DBusSocket        fd,
   223 DBusSocket _dbus_connect_tcp_socket_with_nonce  (
const char     *host,
   226                                                  const char     *noncefile,
   263 dbus_bool_t _dbus_daemon_is_session_bus_address_published (
const char *scope);
   265 dbus_bool_t _dbus_daemon_publish_session_bus_address (
const char* address, 
const char* shm_name);
   267 void _dbus_daemon_unpublish_session_bus_address (
void);
   292 #if DBUS_HAVE_ATOMIC_INT_COND   293 #   define DBUS_HAVE_ATOMIC_INT 1   295 #   undef DBUS_HAVE_ATOMIC_INT   312 # define DBUS_POLLABLE_FORMAT "Iu"   314 static inline DBusPollable
   315 _dbus_socket_get_pollable (
DBusSocket s) { 
return s; }
   318 _dbus_pollable_printable (DBusPollable p) { 
return p.sock; }
   321 _dbus_pollable_is_valid (DBusPollable p) { 
return _dbus_socket_is_valid (p); }
   324 _dbus_pollable_invalidate (DBusPollable *p) { _dbus_socket_invalidate (p); }
   327 _dbus_pollable_equals (DBusPollable a, DBusPollable b) { 
return a.sock == b.sock; }
   336 typedef int DBusPollable;
   337 # define DBUS_POLLABLE_FORMAT "d"   339 static inline DBusPollable
   340 _dbus_socket_get_pollable (
DBusSocket s) { 
return s.fd; }
   343 _dbus_pollable_printable (DBusPollable p) { 
return p; }
   346 _dbus_pollable_is_valid (DBusPollable p) { 
return p >= 0; }
   349 _dbus_pollable_invalidate (DBusPollable *p) { *p = -1; }
   352 _dbus_pollable_equals (DBusPollable a, DBusPollable b) { 
return a == b; }
   356 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)   364 #define _DBUS_POLLIN      POLLIN   366 #define _DBUS_POLLPRI     POLLPRI   368 #define _DBUS_POLLOUT     POLLOUT   370 #define _DBUS_POLLERR     POLLERR   372 #define _DBUS_POLLHUP     POLLHUP   374 #define _DBUS_POLLNVAL    POLLNVAL   388 #define _DBUS_POLLIN      0x0001   390 #define _DBUS_POLLPRI     0x0002   392 #define _DBUS_POLLOUT     0x0004   394 #define _DBUS_POLLERR     0x0008   396 #define _DBUS_POLLHUP     0x0010   398 #define _DBUS_POLLNVAL    0x0020   404                 int         timeout_milliseconds);
   463 _DBUS_GNUC_WARN_UNUSED_RESULT
   480 int         _dbus_save_socket_errno                  (
void);
   481 void        _dbus_restore_socket_errno               (
int saved_errno);
   494 void _dbus_exit (
int code) _DBUS_GNUC_NORETURN;
   555 void _dbus_init_system_log (
dbus_bool_t is_daemon);
   558   DBUS_SYSTEM_LOG_INFO,
   559   DBUS_SYSTEM_LOG_WARNING,
   560   DBUS_SYSTEM_LOG_SECURITY,
   561   DBUS_SYSTEM_LOG_FATAL
   562 } DBusSystemLogSeverity;
   564 void _dbus_system_log (DBusSystemLogSeverity severity, 
const char *msg, ...) _DBUS_GNUC_PRINTF (2, 3);
   565 void _dbus_system_logv (DBusSystemLogSeverity severity, const 
char *msg, va_list args);
   570 #if !defined (DBUS_VA_COPY)   571 #  if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))   572 #    define DBUS_VA_COPY(ap1, ap2)   (*(ap1) = *(ap2))   573 #  elif defined (DBUS_VA_COPY_AS_ARRAY)   574 #    define DBUS_VA_COPY(ap1, ap2)   memcpy ((ap1), (ap2), sizeof (va_list))   576 #    define DBUS_VA_COPY(ap1, ap2)   ((ap1) = (ap2))   585 #define _DBUS_BYTE_OF_PRIMITIVE(p, i) \   586     (((const char*)&(p))[(i)])   592 #define _DBUS_DOUBLES_BITWISE_EQUAL(a, b)                                       \   593      (_DBUS_BYTE_OF_PRIMITIVE (a, 0) == _DBUS_BYTE_OF_PRIMITIVE (b, 0) &&       \   594       _DBUS_BYTE_OF_PRIMITIVE (a, 1) == _DBUS_BYTE_OF_PRIMITIVE (b, 1) &&       \   595       _DBUS_BYTE_OF_PRIMITIVE (a, 2) == _DBUS_BYTE_OF_PRIMITIVE (b, 2) &&       \   596       _DBUS_BYTE_OF_PRIMITIVE (a, 3) == _DBUS_BYTE_OF_PRIMITIVE (b, 3) &&       \   597       _DBUS_BYTE_OF_PRIMITIVE (a, 4) == _DBUS_BYTE_OF_PRIMITIVE (b, 4) &&       \   598       _DBUS_BYTE_OF_PRIMITIVE (a, 5) == _DBUS_BYTE_OF_PRIMITIVE (b, 5) &&       \   599       _DBUS_BYTE_OF_PRIMITIVE (a, 6) == _DBUS_BYTE_OF_PRIMITIVE (b, 6) &&       \   600       _DBUS_BYTE_OF_PRIMITIVE (a, 7) == _DBUS_BYTE_OF_PRIMITIVE (b, 7))   667 _dbus_replace_install_prefix (
const char *configure_time_path);
   675 #define DBUS_DEFAULT_MESSAGE_UNIX_FDS 16   677 typedef struct DBusRLimit DBusRLimit;
   679 DBusRLimit     *_dbus_rlimit_save_fd_limit                 (
DBusError    *error);
   680 dbus_bool_t     _dbus_rlimit_raise_fd_limit_if_privileged  (
unsigned int  desired,
   682 dbus_bool_t     _dbus_rlimit_restore_fd_limit              (DBusRLimit   *saved,
   684 void            _dbus_rlimit_free                          (DBusRLimit   *lim);
   692 #include "dbus-sysdeps-win.h" An atomic integer safe to increment or decrement from multiple threads. 
dbus_bool_t _dbus_split_paths_and_append(DBusString *dirs, const char *suffix, DBusList **dir_list)
Split paths into a list of char strings. 
dbus_bool_t _dbus_append_system_config_file(DBusString *str)
Append the absolute path of the system.conf file (there is no system bus on Windows so this can just ...
volatile dbus_int32_t value
Value of the atomic integer. 
dbus_bool_t _dbus_check_dir_is_private_to_user(DBusString *dir, DBusError *error)
Checks to make sure the given directory is private to the user. 
dbus_bool_t _dbus_get_is_errno_enomem(int e)
See if errno is ENOMEM. 
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. 
#define DBUS_BEGIN_DECLS
Macro used prior to declaring functions in the D-Bus header files. 
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()). 
Portable struct with stat() results. 
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. 
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_path_is_absolute(const DBusString *filename)
Checks whether the filename is an absolute path. 
unsigned long atime
Access time. 
dbus_bool_t _dbus_check_setuid(void)
NOTE: If you modify this function, please also consider making the corresponding change in GLib...
dbus_bool_t _dbus_threads_init_platform_specific(void)
Initialize threads as in dbus_threads_init_default(), appropriately for the platform. 
dbus_bool_t _dbus_get_standard_session_servicedirs(DBusList **dirs)
Returns the standard directories for a session bus to look for service activation files...
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
DBUS_PRIVATE_EXPORT dbus_pid_t _dbus_getpid(void)
Gets our process ID. 
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_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. 
dbus_bool_t _dbus_command_for_pid(unsigned long pid, DBusString *str, int max_len, DBusError *error)
Get a printable string describing the command used to execute the process with pid. 
short events
Events to poll for. 
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_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket. 
void(* DBusSignalHandler)(int sig)
A UNIX signal handler. 
void _dbus_abort(void)
Aborts the program with SIGABRT (dumping core). 
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus. 
dbus_bool_t _dbus_clearenv(void)
Wrapper for clearenv(). 
Internals of directory iterator. 
dbus_bool_t _dbus_user_at_console(const char *username, DBusError *error)
Checks if user is at the console. 
unsigned long mode
File mode. 
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket. 
unsigned long dbus_pid_t
A process ID. 
void _dbus_threads_unlock_platform_specific(void)
Undo _dbus_threads_lock_platform_specific(). 
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...
void _dbus_threads_lock_platform_specific(void)
Lock a static mutex used to protect _dbus_threads_init_platform_specific(). 
dbus_gid_t gid
Group owning file. 
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(int e)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted) ...
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE. 
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). 
int _dbus_write_socket_two(DBusSocket fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write_two() but only works on sockets and is thus available on Windows. 
DBusSocket _dbus_accept(DBusSocket listen_fd)
Accepts a connection on a listening socket. 
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer. 
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_append_keyring_directory_for_credentials(DBusString *directory, DBusCredentials *credentials)
Appends the directory in which a keyring for the given credentials should be stored. 
dbus_bool_t _dbus_read_credentials_socket(DBusSocket client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
directory interface 
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_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty. 
Object representing an exception. 
void _dbus_set_signal_handler(int sig, DBusSignalHandler handler)
Installs a UNIX signal handler. 
DBUS_PRIVATE_EXPORT void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday(). 
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, DBusSocket **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket. 
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN); 
dbus_bool_t _dbus_stat(const DBusString *filename, DBusStat *statbuf, DBusError *error)
stat() wrapper. 
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_error_from_system_errno(void)
Converts the current system errno value into a DBusError name. 
dbus_bool_t _dbus_unix_user_is_at_console(dbus_uid_t uid, DBusError *error)
Checks to see if the UNIX user ID is at the console. 
dbus_bool_t _dbus_string_get_dirname(const DBusString *filename, DBusString *dirname)
Get the directory name from a complete filename. 
dbus_bool_t _dbus_windows_user_is_process_owner(const char *windows_sid)
Checks to see if the Windows user SID matches the owner of the process. 
void _dbus_system_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g. 
unsigned long ctime
Creation time. 
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_PRIVATE_EXPORT const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR, TMP, and TEMP in that order. 
dbus_bool_t _dbus_credentials_add_from_current_process(DBusCredentials *credentials)
Adds the credentials of the current process to the passed-in credentials object. 
unsigned long nlink
Number of hard links. 
DBusPollable fd
File descriptor. 
_DBUS_GNUC_WARN_UNUSED_RESULT dbus_bool_t _dbus_generate_random_bytes_buffer(char *buffer, int n_bytes, DBusError *error)
Random numbers. 
dbus_uid_t uid
User owning file. 
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. 
void _dbus_system_log(DBusSystemLogSeverity severity, const char *msg,...)
Log a message to the system log file (e.g. 
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...
DBUS_PRIVATE_EXPORT void _dbus_exit(int code) _DBUS_GNUC_NORETURN
Exit the process, returning the given value. 
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...
void _dbus_directory_close(DBusDirIter *iter)
Closes a directory iteration. 
DBUS_PRIVATE_EXPORT const char * _dbus_strerror_from_errno(void)
Get error message from errno. 
DBusSocket _dbus_connect_tcp_socket(const char *host, const char *port, const char *family, DBusError *error)
Creates a socket and connects to a socket at the given host and port. 
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer. 
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_uid_t _dbus_getuid(void)
Gets our UID. 
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes, DBusError *error)
Generates the given number of securely random bytes, using the best mechanism we can come up with...
dbus_bool_t _dbus_set_socket_nonblocking(DBusSocket fd, DBusError *error)
Sets a file descriptor to be nonblocking. 
char ** _dbus_get_environment(void)
Gets a NULL-terminated list of key=value pairs from the environment. 
dbus_bool_t _dbus_get_is_errno_epipe(int e)
See if errno is EPIPE. 
dbus_bool_t _dbus_lookup_session_address(dbus_bool_t *supported, DBusString *address, DBusError *error)
Determines the address of the session bus by querying a platform-specific method. ...
dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we're running on from the dbus configuration. 
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_get_is_errno_eintr(int e)
See if errno is EINTR. 
unsigned long mtime
Modify time. 
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr. 
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. 
DBusDirIter * _dbus_directory_open(const DBusString *filename, DBusError *error)
Open a directory to iterate over. 
DBUS_PRIVATE_EXPORT dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer. 
DBUS_PRIVATE_EXPORT void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds. 
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. 
unsigned long dbus_gid_t
A group ID. 
unsigned long size
Size of file. 
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_bool_t _dbus_append_session_config_file(DBusString *str)
Append the absolute path of the session.conf file. 
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd)
Checks whether file descriptors may be passed via the socket. 
const char * _dbus_getenv(const char *varname)
Wrapper for getenv(). 
unsigned long dbus_uid_t
A user ID. 
DBUS_PRIVATE_EXPORT int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll(). 
short revents
Events that occurred. 
dbus_bool_t _dbus_get_is_errno_etoomanyrefs(int e)
See if errno is ETOOMANYREFS. 
void _dbus_set_errno_to_zero(void)
Assign 0 to the global errno variable. 
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_bool_t _dbus_directory_get_next_file(DBusDirIter *iter, DBusString *filename, DBusError *error)
Get next file in the directory. 
DBUS_PRIVATE_EXPORT void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday(). 
dbus_bool_t _dbus_credentials_add_from_user(DBusCredentials *credentials, const DBusString *username)
Adds the credentials corresponding to the given username. 
#define DBUS_END_DECLS
Macro used after declaring functions in the D-Bus header files.