| /* -*- 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 */ |