1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-sysdeps.h Wrappers around system/libc features (internal to D-BUS implementation)
4 * Copyright (C) 2002, 2003 Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 1.2
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #ifndef DBUS_SYSDEPS_H
26 #define DBUS_SYSDEPS_H
28 #include <dbus/dbus-string.h>
29 #include <dbus/dbus-errors.h>
31 /* this is perhaps bogus, but strcmp() etc. are faster if we use the
32 * stuff straight out of string.h, so have this here for now.
36 /* and it would just be annoying to abstract this */
41 /* The idea of this file is to encapsulate everywhere that we're
42 * relying on external libc features, for ease of security
43 * auditing. The idea is from vsftpd. This also gives us a chance to
44 * make things more convenient to use, e.g. by reading into a
45 * DBusString. Operating system headers aren't intended to be used
46 * outside of this file and a limited number of others (such as
50 void _dbus_abort (void);
52 const char* _dbus_getenv (const char *varname);
53 dbus_bool_t _dbus_setenv (const char *varname,
56 int _dbus_read (int fd,
59 int _dbus_write (int fd,
60 const DBusString *buffer,
63 int _dbus_write_two (int fd,
64 const DBusString *buffer1,
67 const DBusString *buffer2,
73 /* -1 if not available */
79 int _dbus_connect_unix_socket (const char *path,
81 int _dbus_listen_unix_socket (const char *path,
83 int _dbus_connect_tcp_socket (const char *host,
86 int _dbus_listen_tcp_socket (const char *host,
89 int _dbus_accept (int listen_fd);
91 dbus_bool_t _dbus_read_credentials_unix_socket (int client_fd,
92 DBusCredentials *credentials,
94 dbus_bool_t _dbus_send_credentials_unix_socket (int server_fd,
98 dbus_bool_t _dbus_credentials_from_username (const DBusString *username,
99 DBusCredentials *credentials);
100 dbus_bool_t _dbus_credentials_from_user_id (unsigned long user_id,
101 DBusCredentials *credentials);
102 dbus_bool_t _dbus_credentials_from_uid_string (const DBusString *uid_str,
103 DBusCredentials *credentials);
104 void _dbus_credentials_from_current_process (DBusCredentials *credentials);
105 dbus_bool_t _dbus_credentials_match (const DBusCredentials *expected_credentials,
106 const DBusCredentials *provided_credentials);
108 dbus_bool_t _dbus_string_append_our_uid (DBusString *str);
110 dbus_bool_t _dbus_homedir_from_username (const DBusString *username,
111 DBusString *homedir);
112 dbus_bool_t _dbus_user_info_from_current_process (const DBusString **username,
113 const DBusString **homedir,
114 const DBusCredentials **credentials);
116 dbus_bool_t _dbus_get_group_id (const DBusString *group_name,
118 dbus_bool_t _dbus_get_groups (unsigned long uid,
119 unsigned long **group_ids,
122 typedef int dbus_atomic_t;
124 dbus_atomic_t _dbus_atomic_inc (dbus_atomic_t *atomic);
125 dbus_atomic_t _dbus_atomic_dec (dbus_atomic_t *atomic);
127 #define _DBUS_POLLIN 0x0001 /* There is data to read */
128 #define _DBUS_POLLPRI 0x0002 /* There is urgent data to read */
129 #define _DBUS_POLLOUT 0x0004 /* Writing now will not block */
130 #define _DBUS_POLLERR 0x0008 /* Error condition */
131 #define _DBUS_POLLHUP 0x0010 /* Hung up */
132 #define _DBUS_POLLNVAL 0x0020 /* Invalid request: fd not open */
141 int _dbus_poll (DBusPollFD *fds,
143 int timeout_milliseconds);
145 void _dbus_sleep_milliseconds (int milliseconds);
147 void _dbus_get_current_time (long *tv_sec,
151 dbus_bool_t _dbus_file_get_contents (DBusString *str,
152 const DBusString *filename,
154 dbus_bool_t _dbus_string_save_to_file (const DBusString *str,
155 const DBusString *filename,
158 dbus_bool_t _dbus_create_file_exclusively (const DBusString *filename,
160 dbus_bool_t _dbus_delete_file (const DBusString *filename,
162 dbus_bool_t _dbus_create_directory (const DBusString *filename,
165 dbus_bool_t _dbus_concat_dir_and_file (DBusString *dir,
166 const DBusString *next_component);
167 dbus_bool_t _dbus_string_get_dirname (const DBusString *filename,
168 DBusString *dirname);
169 dbus_bool_t _dbus_path_is_absolute (const DBusString *filename);
171 typedef struct DBusDirIter DBusDirIter;
173 DBusDirIter* _dbus_directory_open (const DBusString *filename,
175 dbus_bool_t _dbus_directory_get_next_file (DBusDirIter *iter,
176 DBusString *filename,
178 void _dbus_directory_close (DBusDirIter *iter);
181 dbus_bool_t _dbus_generate_random_bytes (DBusString *str,
184 const char *_dbus_errno_to_string (int errnum);
185 const char* _dbus_error_from_errno (int error_number);
187 void _dbus_disable_sigpipe (void);
189 void _dbus_fd_set_close_on_exec (int fd);
191 void _dbus_exit (int code);
205 dbus_bool_t _dbus_stat (const DBusString *filename,
208 dbus_bool_t _dbus_full_duplex_pipe (int *fd1,
210 dbus_bool_t blocking,
212 dbus_bool_t _dbus_close (int fd,
215 void _dbus_print_backtrace (void);
217 dbus_bool_t _dbus_become_daemon (DBusError *error);
219 dbus_bool_t _dbus_change_identity (unsigned long uid,
225 #endif /* DBUS_SYSDEPS_H */