static BOOL write_pid = TRUE;
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+static uschar * notifier_socket_name;
+#endif
/*************************************************
/*************************************************
*************************************************/
-#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
static void
unlink_notifier_socket(void)
{
-uschar * s = expand_string(notifier_socket);
-DEBUG(D_any) debug_printf("unlinking notifier socket %s\n", s);
-Uunlink(s);
-}
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+DEBUG(D_any) debug_printf("unlinking notifier socket %s\n", notifier_socket_name);
+Uunlink(notifier_socket_name);
#endif
+}
static void
{
(void) close(daemon_notifier_fd);
daemon_notifier_fd = -1;
-#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
- unlink_notifier_socket();
-#endif
}
for (int i = 0; i < listen_socket_count; i++) (void) close(fd_polls[i].fd);
{
close(daemon_notifier_fd);
daemon_notifier_fd = -1;
-#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
unlink_notifier_socket();
-#endif
}
if (f.running_in_test_harness || write_pid)
#else
*sname = string_sprintf("%s/p_%d", spool_directory, getpid());
return offsetof(struct sockaddr_un, sun_path)
- + snprintf(sup->sun_path, sizeof(sup->sun_path), "%s", sname);
+ + snprintf(sup->sun_path, sizeof(sup->sun_path), "%s", CS *sname);
#endif
}
sup->sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
return offsetof(struct sockaddr_un, sun_path) + 1
+ snprintf(sup->sun_path+1, sizeof(sup->sun_path)-1, "%s",
- expand_string(notifier_socket));
+ CS expand_string(notifier_socket));
#else
+notifier_socket_name = expand_string(notifier_socket);
return offsetof(struct sockaddr_un, sun_path)
+ snprintf(sup->sun_path, sizeof(sup->sun_path), "%s",
- expand_string(notifier_socket));
+ CS notifier_socket_name);
#endif
}
struct sockaddr_un sa_un = {.sun_family = AF_UNIX};
ssize_t len;
-if (!notifier_socket || !*notifier_socket)
+if (!f.notifier_socket_en)
{
DEBUG(D_any) debug_printf("-oY used so not creating notifier socket\n");
return;
debug_printf("-oX used without -oP so not creating notifier socket\n");
return;
}
+if (!notifier_socket || !*notifier_socket)
+ {
+ DEBUG(D_any) debug_printf("no name for notifier socket\n");
+ return;
+ }
DEBUG(D_any) debug_printf("creating notifier socket\n");
#ifdef notdef
debug_printf("addrlen %d\n", msg.msg_namelen);
#endif
-DEBUG(D_queue_run) debug_printf("%s from addr '%s%.*s'\n", __FUNCTION__,
- *sa_un.sun_path ? "" : "@",
- (int)msg.msg_namelen - (*sa_un.sun_path ? 0 : 1),
- sa_un.sun_path + (*sa_un.sun_path ? 0 : 1));
+DEBUG(D_queue_run)
+ if (msg.msg_namelen > 0)
+ {
+ BOOL abstract = !*sa_un.sun_path;
+ char * name = sa_un.sun_path + (abstract ? 1 : 0);
+ int namelen = (int)msg.msg_namelen - abstract ? 1 : 0;
+ if (*name)
+ debug_printf("%s from addr '%s%.*s'\n", __FUNCTION__,
+ abstract ? "@" : "",
+ namelen, name);
+ else
+ debug_printf("%s (from unknown addr)\n", __FUNCTION__);
+ }
+ else
+ debug_printf("%s (from unknown addr)\n", __FUNCTION__);
/* Refuse to handle the item unless the peer has good credentials */
#ifdef SCM_CREDENTIALS
+static void
+daemon_inetd_wtimeout(time_t last_connection_time)
+{
+time_t resignal_interval = inetd_wait_timeout;
+
+if (last_connection_time == (time_t)0)
+ {
+ DEBUG(D_any)
+ debug_printf("inetd wait timeout expired, but still not seen first message, ignoring\n");
+ }
+else
+ {
+ time_t now = time(NULL);
+ if (now == (time_t)-1)
+ {
+ DEBUG(D_any) debug_printf("failed to get time: %s\n", strerror(errno));
+ }
+ else if ((now - last_connection_time) >= inetd_wait_timeout)
+ {
+ DEBUG(D_any)
+ debug_printf("inetd wait timeout %d expired, ending daemon\n",
+ inetd_wait_timeout);
+ log_write(0, LOG_MAIN, "exim %s daemon terminating, inetd wait timeout reached.\n",
+ version_string);
+ daemon_die(); /* Does not return */
+ }
+ else
+ resignal_interval -= (now - last_connection_time);
+ }
+
+sigalrm_seen = FALSE;
+ALARM(resignal_interval);
+}
+
+
+static void
+daemon_qrun(int local_queue_run_max, struct pollfd * fd_polls, int listen_socket_count)
+{
+DEBUG(D_any) debug_printf("%s received\n",
+#ifndef DISABLE_QUEUE_RAMP
+ *queuerun_msgid ? "qrun notification" :
+#endif
+ "SIGALRM");
+
+/* Do a full queue run in a child process, if required, unless we already
+have enough queue runners on the go. If we are not running as root, a
+re-exec is required. */
+
+if ( queue_interval > 0
+ && (local_queue_run_max <= 0 || queue_run_count < local_queue_run_max))
+ {
+pid_t pid;
+
+ if ((pid = exim_fork(US"queue-runner")) == 0)
+ {
+ /* Disable debugging if it's required only for the daemon process. We
+ leave the above message, because it ties up with the "child ended"
+ debugging messages. */
+
+ if (f.debug_daemon) debug_selector = 0;
+
+ /* Close any open listening sockets in the child */
+
+ close_daemon_sockets(daemon_notifier_fd,
+ fd_polls, listen_socket_count);
+
+ /* Reset SIGHUP and SIGCHLD in the child in both cases. */
+
+ signal(SIGHUP, SIG_DFL);
+ signal(SIGCHLD, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
+ signal(SIGINT, SIG_DFL);
+
+ /* Re-exec if privilege has been given up, unless deliver_drop_
+ privilege is set. Reset SIGALRM before exec(). */
+
+ if (geteuid() != root_uid && !deliver_drop_privilege)
+ {
+ uschar opt[8];
+ uschar *p = opt;
+ uschar *extra[7];
+ int extracount = 1;
+
+ signal(SIGALRM, SIG_DFL);
+ *p++ = '-';
+ *p++ = 'q';
+ if ( f.queue_2stage
+#ifndef DISABLE_QUEUE_RAMP
+ && !*queuerun_msgid
+#endif
+ ) *p++ = 'q';
+ if (f.queue_run_first_delivery) *p++ = 'i';
+ if (f.queue_run_force) *p++ = 'f';
+ if (f.deliver_force_thaw) *p++ = 'f';
+ if (f.queue_run_local) *p++ = 'l';
+ *p = 0;
+ extra[0] = *queue_name
+ ? string_sprintf("%sG%s", opt, queue_name) : opt;
+
+#ifndef DISABLE_QUEUE_RAMP
+ if (*queuerun_msgid)
+ {
+ log_write(0, LOG_MAIN, "notify triggered queue run");
+ extra[extracount++] = queuerun_msgid; /* Trigger only the */
+ extra[extracount++] = queuerun_msgid; /* one message */
+ }
+#endif
+
+ /* If -R or -S were on the original command line, ensure they get
+ passed on. */
+
+ if (deliver_selectstring)
+ {
+ extra[extracount++] = f.deliver_selectstring_regex ? US"-Rr" : US"-R";
+ extra[extracount++] = deliver_selectstring;
+ }
+
+ if (deliver_selectstring_sender)
+ {
+ extra[extracount++] = f.deliver_selectstring_sender_regex
+ ? US"-Sr" : US"-S";
+ extra[extracount++] = deliver_selectstring_sender;
+ }
+
+ /* Overlay this process with a new execution. */
+
+ (void)child_exec_exim(CEE_EXEC_PANIC, FALSE, NULL, FALSE, extracount,
+ extra[0], extra[1], extra[2], extra[3], extra[4], extra[5], extra[6]);
+
+ /* Control never returns here. */
+ }
+
+ /* No need to re-exec; SIGALRM remains set to the default handler */
+
+#ifndef DISABLE_QUEUE_RAMP
+ if (*queuerun_msgid)
+ {
+ log_write(0, LOG_MAIN, "notify triggered queue run");
+ f.queue_2stage = FALSE;
+ queue_run(queuerun_msgid, queuerun_msgid, FALSE);
+ }
+ else
+#endif
+ queue_run(NULL, NULL, FALSE);
+ exim_underbar_exit(EXIT_SUCCESS);
+ }
+
+ if (pid < 0)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "daemon: fork of queue-runner "
+ "process failed: %s", strerror(errno));
+ log_close_all();
+ }
+ else
+ {
+ for (int i = 0; i < local_queue_run_max; ++i)
+ if (queue_pid_slots[i] <= 0)
+ {
+ queue_pid_slots[i] = pid;
+ queue_run_count++;
+ break;
+ }
+ DEBUG(D_any) debug_printf("%d queue-runner process%s running\n",
+ queue_run_count, queue_run_count == 1 ? "" : "es");
+ }
+ }
+
+/* Reset the alarm clock */
+
+sigalrm_seen = FALSE;
+#ifndef DISABLE_QUEUE_RAMP
+if (*queuerun_msgid)
+ *queuerun_msgid = 0;
+else
+#endif
+ ALARM(queue_interval);
+}
+
/*************************************************
* Exim Daemon Mainline *
*************************************************/
for (;;)
{
- pid_t pid;
-
if (sigterm_seen)
daemon_die(); /* Does not return */
The other option is that we have an inetd wait timeout specified to -bw. */
if (sigalrm_seen)
- {
if (inetd_wait_timeout > 0)
- {
- time_t resignal_interval = inetd_wait_timeout;
-
- if (last_connection_time == (time_t)0)
- {
- DEBUG(D_any)
- debug_printf("inetd wait timeout expired, but still not seen first message, ignoring\n");
- }
- else
- {
- time_t now = time(NULL);
- if (now == (time_t)-1)
- {
- DEBUG(D_any) debug_printf("failed to get time: %s\n", strerror(errno));
- }
- else
- {
- if ((now - last_connection_time) >= inetd_wait_timeout)
- {
- DEBUG(D_any)
- debug_printf("inetd wait timeout %d expired, ending daemon\n",
- inetd_wait_timeout);
- log_write(0, LOG_MAIN, "exim %s daemon terminating, inetd wait timeout reached.\n",
- version_string);
- exit(EXIT_SUCCESS);
- }
- else
- {
- resignal_interval -= (now - last_connection_time);
- }
- }
- }
-
- sigalrm_seen = FALSE;
- ALARM(resignal_interval);
- }
-
+ daemon_inetd_wtimeout(last_connection_time); /* Might not return */
else
- {
- DEBUG(D_any) debug_printf("%s received\n",
-#ifndef DISABLE_QUEUE_RAMP
- *queuerun_msgid ? "qrun notification" :
-#endif
- "SIGALRM");
-
- /* Do a full queue run in a child process, if required, unless we already
- have enough queue runners on the go. If we are not running as root, a
- re-exec is required. */
-
- if ( queue_interval > 0
- && (local_queue_run_max <= 0 || queue_run_count < local_queue_run_max))
- {
- if ((pid = exim_fork(US"queue-runner")) == 0)
- {
- /* Disable debugging if it's required only for the daemon process. We
- leave the above message, because it ties up with the "child ended"
- debugging messages. */
-
- if (f.debug_daemon) debug_selector = 0;
-
- /* Close any open listening sockets in the child */
-
- close_daemon_sockets(daemon_notifier_fd,
- fd_polls, listen_socket_count);
-
- /* Reset SIGHUP and SIGCHLD in the child in both cases. */
-
- signal(SIGHUP, SIG_DFL);
- signal(SIGCHLD, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGINT, SIG_DFL);
-
- /* Re-exec if privilege has been given up, unless deliver_drop_
- privilege is set. Reset SIGALRM before exec(). */
-
- if (geteuid() != root_uid && !deliver_drop_privilege)
- {
- uschar opt[8];
- uschar *p = opt;
- uschar *extra[7];
- int extracount = 1;
-
- signal(SIGALRM, SIG_DFL);
- *p++ = '-';
- *p++ = 'q';
- if ( f.queue_2stage
-#ifndef DISABLE_QUEUE_RAMP
- && !*queuerun_msgid
-#endif
- ) *p++ = 'q';
- if (f.queue_run_first_delivery) *p++ = 'i';
- if (f.queue_run_force) *p++ = 'f';
- if (f.deliver_force_thaw) *p++ = 'f';
- if (f.queue_run_local) *p++ = 'l';
- *p = 0;
- extra[0] = *queue_name
- ? string_sprintf("%sG%s", opt, queue_name) : opt;
-
-#ifndef DISABLE_QUEUE_RAMP
- if (*queuerun_msgid)
- {
- log_write(0, LOG_MAIN, "notify triggered queue run");
- extra[extracount++] = queuerun_msgid; /* Trigger only the */
- extra[extracount++] = queuerun_msgid; /* one message */
- }
-#endif
-
- /* If -R or -S were on the original command line, ensure they get
- passed on. */
-
- if (deliver_selectstring)
- {
- extra[extracount++] = f.deliver_selectstring_regex ? US"-Rr" : US"-R";
- extra[extracount++] = deliver_selectstring;
- }
-
- if (deliver_selectstring_sender)
- {
- extra[extracount++] = f.deliver_selectstring_sender_regex
- ? US"-Sr" : US"-S";
- extra[extracount++] = deliver_selectstring_sender;
- }
-
- /* Overlay this process with a new execution. */
-
- (void)child_exec_exim(CEE_EXEC_PANIC, FALSE, NULL, FALSE, extracount,
- extra[0], extra[1], extra[2], extra[3], extra[4], extra[5], extra[6]);
-
- /* Control never returns here. */
- }
-
- /* No need to re-exec; SIGALRM remains set to the default handler */
-
-#ifndef DISABLE_QUEUE_RAMP
- if (*queuerun_msgid)
- {
- log_write(0, LOG_MAIN, "notify triggered queue run");
- f.queue_2stage = FALSE;
- queue_run(queuerun_msgid, queuerun_msgid, FALSE);
- }
- else
-#endif
- queue_run(NULL, NULL, FALSE);
- exim_underbar_exit(EXIT_SUCCESS);
- }
-
- if (pid < 0)
- {
- log_write(0, LOG_MAIN|LOG_PANIC, "daemon: fork of queue-runner "
- "process failed: %s", strerror(errno));
- log_close_all();
- }
- else
- {
- for (int i = 0; i < local_queue_run_max; ++i)
- if (queue_pid_slots[i] <= 0)
- {
- queue_pid_slots[i] = pid;
- queue_run_count++;
- break;
- }
- DEBUG(D_any) debug_printf("%d queue-runner process%s running\n",
- queue_run_count, queue_run_count == 1 ? "" : "es");
- }
- }
-
- /* Reset the alarm clock */
-
- sigalrm_seen = FALSE;
-#ifndef DISABLE_QUEUE_RAMP
- if (*queuerun_msgid)
- *queuerun_msgid = 0;
- else
-#endif
- ALARM(queue_interval);
- }
-
- } /* sigalrm_seen */
+ daemon_qrun(local_queue_run_max, fd_polls, listen_socket_count);
/* Sleep till a connection happens if listening, and handle the connection if
if (p->revents & POLLIN)
{
EXIM_SOCKLEN_T alen = sizeof(accepted);
-#ifdef TCP_INFO
+#if defined(__FreeBSD__) && defined(SO_LISTENQLEN)
+ int backlog;
+ socklen_t blen = sizeof(backlog);
+
+ if ( smtp_backlog_monitor > 0
+ && getsockopt(p->fd, SOL_SOCKET, SO_LISTENQLEN, &backlog, &blen) == 0)
+ {
+ DEBUG(D_interface)
+ debug_printf("listen fd %d queue curr %d\n", p->fd, backlog);
+ smtp_listen_backlog = backlog;
+ }
+
+#elif defined(TCP_INFO) && defined(EXIM_HAVE_TCPI_UNACKED)
struct tcp_info ti;
socklen_t tlen = sizeof(ti);
if ( smtp_backlog_monitor > 0
&& getsockopt(p->fd, IPPROTO_TCP, TCP_INFO, &ti, &tlen) == 0)
{
-# ifdef EXIM_HAVE_TCPI_UNACKED
DEBUG(D_interface) debug_printf("listen fd %d queue max %u curr %u\n",
p->fd, ti.tcpi_sacked, ti.tcpi_unacked);
smtp_listen_backlog = ti.tcpi_unacked;
-# elif defined(__FreeBSD__) /* This does not work. Investigate kernel sourcecode. */
- DEBUG(D_interface) debug_printf("listen fd %d queue max %u curr %u\n",
- p->fd, ti.__tcpi_sacked, ti.__tcpi_unacked);
- smtp_listen_backlog = ti.__tcpi_unacked;
-# endif
}
#endif
p->revents = 0;
log_write(0, LOG_MAIN, "pid %d: SIGHUP received: re-exec daemon",
getpid());
close_daemon_sockets(daemon_notifier_fd, fd_polls, listen_socket_count);
+ unlink_notifier_socket();
ALARM_CLR(0);
signal(SIGHUP, SIG_IGN);
sighup_argv[0] = exim_path;
git://git.exim.org / exim.git / blobdiff