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
43 sig_atomic_t sigint = false;
44 sig_atomic_t sighup = false;
46 void common_sighandler(int sig)
48 static time_t lastintr = 0;
49 time_t now = time(NULL);
54 if (now - lastintr >= 1)
67 syslog(LOG_ERR, "Killed (got signal %d)...", sig);
72 static int setnonblock(int sock)
74 int res = fcntl(sock, F_GETFL);
81 if (fcntl(sock, F_SETFL, res | O_NONBLOCK) < 0) {
89 int tcp_listen_nonblock(const struct sockaddr *addr, socklen_t len)
93 switch (addr->sa_family) {
95 unlink(((struct sockaddr_un *)addr)->sun_path);
96 sock = socket(PF_UNIX, SOCK_STREAM, 0);
99 sock = socket(PF_INET, SOCK_STREAM, 0);
102 sock = socket(PF_INET6, SOCK_STREAM, 0);
114 if (addr->sa_family != AF_UNIX) {
116 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) < 0) {
117 UNIXERR("setsockopt(SO_REUSEADDR)");
123 if (bind(sock, addr, len) < 0) {
129 if (setnonblock(sock)) {
134 if (listen(sock, 0) < 0) {
143 int accept_nonblock(int fd)
145 int sock = accept(fd, NULL, 0);
152 if (setnonblock(sock)) {
160 int daemon_detach(void)
165 close(STDOUT_FILENO);
166 close(STDERR_FILENO);
168 open("/dev/null", O_RDWR);
169 open("/dev/null", O_RDWR);
170 open("/dev/null", O_RDWR);
182 int drop_privileges(const char *user, const char *group)
189 gr = getgrnam(group);
207 void common_initialize(void)
209 extern initcall_t __madinit_start, __madinit_end;
211 initcall_t *call_p = &__madinit_start;
212 while (call_p < &__madinit_end) {
217 void common_shutdown(void)
219 extern exitcall_t __madexit_start, __madexit_end;
221 exitcall_t *call_p = &__madexit_end;
222 while (call_p > &__madexit_start) {