1 /******************************************************************************/
2 /* pfixtools: a collection of postfix related tools */
4 /* ________________________________________________________________________ */
6 /* Redistribution and use in source and binary forms, with or without */
7 /* modification, are permitted provided that the following conditions */
10 /* 1. Redistributions of source code must retain the above copyright */
11 /* notice, this list of conditions and the following disclaimer. */
12 /* 2. Redistributions in binary form must reproduce the above copyright */
13 /* notice, this list of conditions and the following disclaimer in the */
14 /* documentation and/or other materials provided with the distribution. */
15 /* 3. The names of its contributors may not be used to endorse or promote */
16 /* products derived from this software without specific prior written */
19 /* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
20 /* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
21 /* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
22 /* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
23 /* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
24 /* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
25 /* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
26 /* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
27 /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
28 /* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
29 /* THE POSSIBILITY OF SUCH DAMAGE. */
30 /******************************************************************************/
33 * Copyright © 2007 Pierre Habouzit
34 * Copyright © 2008 Florent Bruneau
37 #ifndef PFIXTOOLS_COMMON_H
38 #define PFIXTOOLS_COMMON_H
43 #include <netinet/in.h>
52 #include <sys/socket.h>
54 #include <sys/types.h>
60 #define UNIXERR(fun) \
61 syslog(LOG_ERR, "%s:%d:%s: %s: %m", \
62 __FILE__, __LINE__, __func__, fun)
65 #define STR(x) __tostr(x)
67 typedef int (*initcall_t)(void);
68 typedef void (*exitcall_t)(void);
70 #define __init __attribute__((__used__,__section__(".mad.init")))
71 #define __exit __attribute__((__used__,__section__(".mad.exit")))
73 #define module_init(fn) static __init initcall_t __init_##fn = fn;
74 #define module_exit(fn) static __exit exitcall_t __exit_##fn = fn;
76 extern sig_atomic_t sigint;
77 extern sig_atomic_t sighup;
79 void common_sighandler(int sig);
81 int tcp_bind(const struct sockaddr *addr, socklen_t len);
82 int tcp_listen(const struct sockaddr *addr, socklen_t len);
83 int tcp_listen_nonblock(const struct sockaddr *addr, socklen_t len);
84 int accept_nonblock(int fd);
85 int xwrite(int fd, const char *s, size_t l);
87 int daemon_detach(void);
88 int drop_privileges(const char *user, const char *group);
90 int pidfile_open(const char *name);
91 int pidfile_refresh(void);
93 int common_setup(const char* pidfile, bool unsafe, const char* runas_user,
94 const char* runas_group, bool daemonize);
96 #define DECLARE_MAIN \
97 static int main_initialize(void) \
99 openlog(DAEMON_NAME, LOG_PID, LOG_MAIL); \
100 signal(SIGPIPE, SIG_IGN); \
101 signal(SIGINT, &common_sighandler); \
102 signal(SIGTERM, &common_sighandler); \
103 signal(SIGHUP, &common_sighandler); \
104 signal(SIGSEGV, &common_sighandler); \
105 syslog(LOG_INFO, "Starting..."); \
109 static void main_shutdown(void) \
114 module_init(main_initialize); \
115 module_exit(main_shutdown);