Update ChangeLog

This makes ps show which service the supervisor is monitoring.

ChangeLog

@@ -1,4 +1,196 @@
-commit 8122e2d8f4fa8538e62f6a5e6b7306afcfc23c1c
+commit 1936d73eb1aecf31029d53e75e6bb14e307f8e1c
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    fix issue with --reexec call
+
+commit 58872fc090af5047547bc561a5e58c50be0fc235
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    version 0.34.5
+
+commit fc35eb90cab625966ca718a80dd0d38dfffe05b8
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    Update ChangeLog
+
+commit b18be3f970eba04589977438faaa726b5c3a6cd2
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: use RC_SVCNAME as the first argument to the daemon
+    
+    This makes ps show which service the supervisor is monitoring.
+
+commit 027438f7759dbbc19ac1bedeff3f502c891e4d4e
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: fix logging for reexec and the child command line
+
+commit 93e159ae8541b82fd5e1843f60dce135e2eb5517
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    log as supervise-daemon not the service
+
+commit bcfcf50562a081088248f693dfab62d3eab04efa
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    version 0.34.4
+
+commit d0097cc10f8701de1b6a5665c54abf909e897233
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    Update ChangeLog
+
+commit eecf868e3c4a763b08cd4b3803f4839e8e710413
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: clarify a log message
+
+commit a5cd486a7fbb5acf8e8f3085500fd86c23dd8641
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    Update ChangeLog
+
+commit 6e6b4ac5fa935eb8052d293f2b8378e0395572e1
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: log the command line we run to spawn the child process
+
+commit 558ff4d5fb90b751ebc2852ea907873af2c236fa
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: log with the service name instead of "supervise-daemon"
+
+commit 490f855aef581a720c6c0be0d8407fe6d279f9f5
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    implement "unsupervised" status
+    
+    The unsupervised status is to be used when a supervisor of a supervised
+    service dies but leaves the service daemon itself running.
+
+commit d1491e201d3ad364e25a55b29ff8035775a6acac
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: remove child_pid from saved options during shutdown
+    
+    This allows us to detect when the supervisor dies unexpectedly because
+    in that case child_pid will still exist.
+
+commit 3231af937590b1c00af1a459009472a371aeb04a
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    rc_service_value_set: remove the option if NULL is the value
+    
+    This allows the equivalent of "unsetting" a value for a service.
+
+commit a5758e7aeffbeb9766ba3055a3fc347f0ccd3d35
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon.sh: fix status function with no namespaces
+
+commit 61a9393ce12fda412bdca4002ac71e7df82384df
+Author: Patrick McLean <chutzpah@gentoo.org>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    cgroups_cleanup: clean up shutdown signaling
+    
+    - do not sleep for the full 90 seconds if processes are dead
+    - re-arrange the order of signals we attempt to send to the processes
+
+commit 161d22cb074ecef7003e19682d72a8ee61c14490
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    version 0.34.3
+
+commit 3a96ca1c966c3cc44a2e0e51b383ab47d078bcc1
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    Update ChangeLog
+
+commit 934530914bd507476b428d3f6572bbb1c5bbfd16
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    add "unsupervised" status and return code 64 to supervise-daemon status function
+    
+    This is to be used if the service is being supervised and the
+    supervisor is somehow killed.
+    
+    Currently, this is very linux specific, but I will expand to other
+    platforms, patches are welcome.
+
+commit b717625cd27950c3f00b5345bc1cee9700e79498
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    version 0.34.2
+
+commit b47539613431521e5e99bc388e6a9d8eb0e48801
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    Update ChangeLog
+
+commit e7b1d898ca7896d6443ba1e5167eb6bcf3f92929
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: fix build issue for >=glibc-2.26
+    
+    X-Gentoo-Bug: 635334
+    X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=635334
+
+commit 5cd09a6f44aa7d16ab7de1453e37d01448426031
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    version 0.34.1
+
+commit f3c70bf5b5aa18e8dc94d4949f05568e0741c5cb
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    Update ChangeLog
+
+commit f5acc66db7d1a0bfad6a40eefc0240b80f52df94
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    rc_find_pids: ignore pids that are not in our pid namespace
+    
+    X-Gentoo-Bug: 634634
+    X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=634634
+
+commit fdce4769f2e0f4175163ffa181c7b3b2192f7b22
+Author: William Hubbs <w.d.hubbs@gmail.com>
+Commit: William Hubbs <w.d.hubbs@gmail.com>
+
+    supervise-daemon: multiple fixes
+    
+    - Harden against dying by handling all signals that would terminate the
+    program and adding --reexec support
+    - factor the supervisor into its own function
+    - fix test for whether we are already running
+
+commit 35b1996704f6635bb29ea3604410e133209e6432
 Author: William Hubbs <w.d.hubbs@gmail.com>
 Commit: William Hubbs <w.d.hubbs@gmail.com>
 
@@ -8,11 +200,11 @@ Commit: William Hubbs <w.d.hubbs@gmail.com>
     we were supervising at the info level. This change moves the logs to
     warnings.
 
-commit ff07754be27e20a4d272661b071b63b435018b51
+commit 3c8e7ed255edb8df0d548d6ce514544d5422cbf0
 Author: William Hubbs <w.d.hubbs@gmail.com>
 Commit: William Hubbs <w.d.hubbs@gmail.com>
 
-    version 0.33.1
+    version 0.34
 
 commit acaed1f910a2a00fdd5b6aeab752c552075a7292
 Author: William Hubbs <w.d.hubbs@gmail.com>
@@ -1428,27 +1620,3 @@ Author: William Hubbs <w.d.hubbs@gmail.com>
 Commit: William Hubbs <w.d.hubbs@gmail.com>
 
     src/rc/rc: do not try to start services if fork fails
-
-commit 003657c973ea338a19f2b7294190af9d76cf5cea
-Author: Robin H. Johnson <robbat2@gentoo.org>
-Commit: William Hubbs <w.d.hubbs@gmail.com>
-
-    init.d/loopback: drop scope on loopback
-    
-    Busybox does not support the 'scope' argument on 'ip address add' or 'ip
-    route add', this is documented in BUSYBOX.md, but is no longer actually
-    needed, as the kernel does get it right without manual specification,
-    and the ifconfig variant already relies on the kernel to get it right.
-    This is part of #103.
-    
-    X-Gentoo-Bug: 487208
-    X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=487208
-
-commit 4fd144c0a6526963c70f18cb34a65354c2f0a48c
-Author: William Hubbs <w.d.hubbs@gmail.com>
-Commit: William Hubbs <w.d.hubbs@gmail.com>
-
-    src/rc/rc-misc.c: report error if call to flock() fails
-    
-    X-Gentoo-Bug: 597390
-    X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=597390

Makefile.inc

@@ -1,3 +1,3 @@
 NAME=		openrc
-VERSION=	0.33.1
+VERSION=	0.34.5
 PKG=		${NAME}-${VERSION}

sh/rc-cgroup.sh.in

@@ -203,15 +203,21 @@ cgroup_cleanup()
 {
 	cgroup_running || return 0
 	ebegin "starting cgroups cleanup"
-	local pids
+	local pids loops=0
 	pids="$(cgroup_get_pids)"
 	if [ -n "${pids}" ]; then
-		kill -s "${stopsig:-TERM}" ${pids} 2> /dev/null
 		kill -s CONT ${pids} 2> /dev/null
+		kill -s "${stopsig:-TERM}" ${pids} 2> /dev/null
 		yesno "${rc_send_sighup:-no}" &&
 			kill -s HUP ${pids} 2> /dev/null
-		sleep "${rc_timeout_stopsec:-90}"
-		yesno "${rc_send_sigkill:-yes}" &&
+		kill -s "${stopsig:-TERM}" ${pids} 2> /dev/null
+		while [ -n "$(cgroup_get_pids)" ] &&
+			[ "${loops}" -lt "${rc_timeout_stopsec:-90}" ]; do
+			loops=$((loops+1))
+			sleep 1
+		done
+		pids="$(cgroup_get_pids)"
+		[ -n "${pids}" ] && yesno "${rc_send_sigkill:-yes}" &&
 			kill -s KILL ${pids} 2> /dev/null
 	fi
 	cgroup2_remove

sh/supervise-daemon.sh

@@ -22,7 +22,7 @@ supervise_start()
 	# The eval call is necessary for cases like:
 	# command_args="this \"is a\" test"
 	# to work properly.
-	eval supervise-daemon --start \
+	eval supervise-daemon "${RC_SVCNAME}" --start \
 		${retry:+--retry} $retry \
 		${chroot:+--chroot} $chroot \
 		${pidfile:+--pidfile} $pidfile \
@@ -49,14 +49,48 @@ supervise_stop()
 	pidfile="${startpidfile:-$pidfile}"
 	[ -n "$pidfile" ] || return 0
 	ebegin "Stopping ${name:-$RC_SVCNAME}"
-	supervise-daemon --stop \
+	supervise-daemon "${RC_SVCNAME}" --stop \
 		${pidfile:+--pidfile} $chroot$pidfile \
 		${stopsig:+--signal} $stopsig
 
 	eend $? "Failed to stop ${name:-$RC_SVCNAME}"
 }
 
+_check_supervised()
+{
+	local child_pid start_time
+	child_pid="$(service_get_value "child_pid")"
+	start_time="$(service_get_value "start_time")"
+	if [ -n "${child_pid}" ] && [ -n "${start_time}" ]; then
+		return 1
+	fi
+	return 0
+}
+
 supervise_status()
 {
-	_status
+	if service_stopping; then
+		ewarn "status: stopping"
+		return 4
+	elif service_starting; then
+		ewarn "status: starting"
+		return 8
+	elif service_inactive; then
+		ewarn "status: inactive"
+		return 16
+	elif service_started; then
+		if service_crashed; then
+			if ! _check_supervised; then
+				eerror "status: unsupervised"
+				return 64
+			fi
+			eerror "status: crashed"
+			return 32
+		fi
+		einfo "status: started"
+		return 0
+	else
+		einfo "status: stopped"
+		return 3
+	fi
 }

src/includes/rc-misc.h

@@ -47,6 +47,7 @@ bool rc_conf_yesno(const char *var);
 void env_filter(void);
 void env_config(void);
 int signal_setup(int sig, void (*handler)(int));
+int signal_setup_restart(int sig, void (*handler)(int));
 int svc_lock(const char *);
 int svc_unlock(const char *, int);
 pid_t exec_service(const char *, const char *);

src/librc/librc-daemon.c

@@ -80,9 +80,12 @@ rc_find_pids(const char *exec, const char *const *argv, uid_t uid, pid_t pid)
 	DIR *procdir;
 	struct dirent *entry;
 	FILE *fp;
+	int rc;
 	bool container_pid = false;
 	bool openvz_host = false;
 	char *line = NULL;
+	char my_ns[30];
+	char proc_ns[30];
 	size_t len = 0;
 	pid_t p;
 	char buffer[PATH_MAX];
@@ -131,6 +134,14 @@ rc_find_pids(const char *exec, const char *const *argv, uid_t uid, pid_t pid)
 		}
 	}
 
+	memset(my_ns, 0, sizeof(my_ns));
+	memset(proc_ns, 0, sizeof(proc_ns));
+	if (exists("/proc/self/ns/pid")) {
+		rc = readlink("/proc/self/ns/pid", my_ns, sizeof(my_ns));
+		if (rc <= 0)
+			my_ns[0] = '\0';
+	}
+
 	while ((entry = readdir(procdir)) != NULL) {
 		if (sscanf(entry->d_name, "%d", &p) != 1)
 			continue;
@@ -138,6 +149,14 @@ rc_find_pids(const char *exec, const char *const *argv, uid_t uid, pid_t pid)
 			continue;
 		if (pid != 0 && pid != p)
 			continue;
+		snprintf(buffer, sizeof(buffer), "/proc/%d/ns/pid", p);
+		if (exists(buffer)) {
+			rc = readlink(buffer, proc_ns, sizeof(proc_ns));
+			if (rc <= 0)
+				proc_ns[0] = '\0';
+		}
+		if (strcmp(my_ns, proc_ns))
+			continue;
 		if (uid) {
 			snprintf(buffer, sizeof(buffer), "/proc/%d", p);
 			if (stat(buffer, &sb) != 0 || sb.st_uid != uid)

src/librc/librc.c

@@ -894,12 +894,15 @@ rc_service_value_set(const char *service, const char *option,
 		return false;
 
 	snprintf(p, sizeof(file) - (p - file), "/%s", option);
-	if (!(fp = fopen(file, "w")))
-		return false;
-	if (value)
+	if (value) {
+		if (!(fp = fopen(file, "w")))
+			return false;
 		fprintf(fp, "%s", value);
-	fclose(fp);
-	return true;
+		fclose(fp);
+	} else {
+		unlink(file);
+	}
+		return true;
 }
 librc_hidden_def(rc_service_value_set)
 

src/rc/rc-misc.c

@@ -217,6 +217,18 @@ signal_setup(int sig, void (*handler)(int))
 	return sigaction(sig, &sa, NULL);
 }
 
+int
+signal_setup_restart(int sig, void (*handler)(int))
+{
+	struct sigaction sa;
+
+	memset(&sa, 0, sizeof (sa));
+	sigemptyset(&sa.sa_mask);
+	sa.sa_handler = handler;
+	sa.sa_flags = SA_RESTART;
+	return sigaction(sig, &sa, NULL);
+}
+
 int
 svc_lock(const char *applet)
 {

src/rc/rc-status.c

@@ -128,6 +128,8 @@ print_service(const char *service)
 {
 	char status[60];
 	char uptime [40];
+	char *child_pid = NULL;
+	char *start_time = NULL;
 	int cols =  printf(" %s", service);
 	const char *c = ecolor(ECOLOR_GOOD);
 	RC_SERVICE state = rc_service_state(service);
@@ -147,7 +149,14 @@ print_service(const char *service)
 		    rc_service_daemons_crashed(service) &&
 		    errno != EACCES)
 		{
-			snprintf(status, sizeof(status), " crashed ");
+			child_pid = rc_service_value_get(service, "child_pid");
+			start_time = rc_service_value_get(service, "start_time");
+			if (start_time && child_pid)
+				snprintf(status, sizeof(status), " unsupervised ");
+			else
+				snprintf(status, sizeof(status), " crashed ");
+			free(child_pid);
+			free(start_time);
 		} else {
 			get_uptime(service, uptime, 40);
 			snprintf(status, sizeof(status), " started %s", uptime);

src/rc/supervise-daemon.c

@@ -67,7 +67,7 @@ static struct pam_conv conv = { NULL, NULL};
 
 const char *applet = NULL;
 const char *extraopts = NULL;
-const char *getoptstring = "D:d:e:g:I:Kk:m:N:p:R:r:Su:1:2:" \
+const char *getoptstring = "D:d:e:g:I:Kk:m:N:p:R:r:Su:1:2:3" \
 	getoptstring_COMMON;
 const struct option longopts[] = {
 	{ "respawn-delay",        1, NULL, 'D'},
@@ -87,6 +87,7 @@ const struct option longopts[] = {
 	{ "user",         1, NULL, 'u'},
 	{ "stdout",       1, NULL, '1'},
 	{ "stderr",       1, NULL, '2'},
+	{ "reexec",       0, NULL, '3'},
 	longopts_COMMON
 };
 const char * const longopts_help[] = {
@@ -107,6 +108,7 @@ const char * const longopts_help[] = {
 	"Change the process user",
 	"Redirect stdout to file",
 	"Redirect stderr to file",
+	"reexec (used internally)",
 	longopts_help_COMMON
 };
 const char *usagestring = NULL;
@@ -127,6 +129,13 @@ static bool exiting = false;
 #ifdef TIOCNOTTY
 static int tty_fd = -1;
 #endif
+static pid_t child_pid;
+static int respawn_count = 0;
+static int respawn_delay = 0;
+static int respawn_max = 10;
+static int respawn_period = 5;
+static char *pidfile = NULL;
+static char *svcname = NULL;
 
 extern char **environ;
 
@@ -150,8 +159,72 @@ static void cleanup(void)
 	free(changeuser);
 }
 
-static void child_process(char *exec, char **argv, char *svcname,
-		int start_count)
+static void re_exec(void)
+{
+	syslog(LOG_WARNING, "Re-executing for %s", svcname);
+	execlp("supervise-daemon", "supervise-daemon", svcname, "--reexec",
+			(char *) NULL);
+	syslog(LOG_ERR, "Unable to execute supervise-daemon: %s",
+			strerror(errno));
+	exit(EXIT_FAILURE);
+}
+
+static void handle_signal(int sig)
+{
+	int serrno = errno;
+
+	syslog(LOG_WARNING, "caught signal %d", sig);
+
+	if (sig == SIGTERM)
+		exiting = true;
+	/* Restore errno */
+	errno = serrno;
+	if (! exiting)
+		re_exec();
+}
+
+static char * expand_home(const char *home, const char *path)
+{
+	char *opath, *ppath, *p, *nh;
+	size_t len;
+	struct passwd *pw;
+
+	if (!path || *path != '~')
+		return xstrdup(path);
+
+	opath = ppath = xstrdup(path);
+	if (ppath[1] != '/' && ppath[1] != '\0') {
+		p = strchr(ppath + 1, '/');
+		if (p)
+			*p = '\0';
+		pw = getpwnam(ppath + 1);
+		if (pw) {
+			home = pw->pw_dir;
+			ppath = p;
+			if (ppath)
+				*ppath = '/';
+		} else
+			home = NULL;
+	} else
+		ppath++;
+
+	if (!home) {
+	free(opath);
+		return xstrdup(path);
+	}
+	if (!ppath) {
+		free(opath);
+		return xstrdup(home);
+	}
+
+	len = strlen(ppath) + strlen(home) + 1;
+	nh = xmalloc(len);
+	snprintf(nh, len, "%s%s", home, ppath);
+	free(opath);
+	return nh;
+}
+
+static void child_process(char *exec, char **argv)
 {
 	RC_STRINGLIST *env_list;
 	RC_STRING *env;
@@ -176,11 +249,13 @@ static void child_process(char *exec, char **argv, char *svcname,
 	setsid();
 
 	if (svcname) {
-start_time = time(NULL);
-from_time_t(start_time_string, start_time);
+		start_time = time(NULL);
+		from_time_t(start_time_string, start_time);
 		rc_service_value_set(svcname, "start_time", start_time_string);
-sprintf(start_count_string, "%i", start_count);
+		sprintf(start_count_string, "%i", respawn_count);
 		rc_service_value_set(svcname, "start_count", start_count_string);
+		sprintf(start_count_string, "%d", getpid());
+		rc_service_value_set(svcname, "child_pid", start_count_string);
 	}
 
 	if (nicelevel) {
@@ -323,12 +398,12 @@ sprintf(start_count_string, "%i", start_count);
 
 	*cmdline = '\0';
 	c = argv;
-	while (*c) {
+	while (c && *c) {
 		strcat(cmdline, *c);
 		strcat(cmdline, " ");
 		c++;
 	}
-	syslog(LOG_INFO, "Running command line: %s", cmdline);
+	syslog(LOG_INFO, "Child command line: %s", cmdline);
 	execvp(exec, argv);
 
 #ifdef HAVE_PAM
@@ -338,108 +413,161 @@ sprintf(start_count_string, "%i", start_count);
 	eerrorx("%s: failed to exec `%s': %s", applet, exec,strerror(errno));
 }
 
-static void handle_signal(int sig)
+static void supervisor(char *exec, char **argv)
 {
-	int serrno = errno;
-	char signame[10] = { '\0' };
+	FILE *fp;
+	int i;
+	int nkilled;
+	time_t respawn_now= 0;
+	time_t first_spawn= 0;
 
-	switch (sig) {
-	case SIGINT:
-		snprintf(signame, sizeof(signame), "SIGINT");
-		break;
-	case SIGTERM:
-		snprintf(signame, sizeof(signame), "SIGTERM");
-		break;
-	case SIGQUIT:
-		snprintf(signame, sizeof(signame), "SIGQUIT");
-		break;
+#ifndef RC_DEBUG
+	signal_setup_restart(SIGHUP, handle_signal);
+	signal_setup_restart(SIGINT, handle_signal);
+	signal_setup_restart(SIGQUIT, handle_signal);
+	signal_setup_restart(SIGILL, handle_signal);
+	signal_setup_restart(SIGABRT, handle_signal);
+	signal_setup_restart(SIGFPE, handle_signal);
+	signal_setup_restart(SIGSEGV, handle_signal);
+	signal_setup_restart(SIGPIPE, handle_signal);
+	signal_setup_restart(SIGALRM, handle_signal);
+	signal_setup(SIGTERM, handle_signal);
+	signal_setup_restart(SIGUSR1, handle_signal);
+	signal_setup_restart(SIGUSR2, handle_signal);
+	signal_setup_restart(SIGBUS, handle_signal);
+	signal_setup_restart(SIGPOLL, handle_signal);
+	signal_setup_restart(SIGPROF, handle_signal);
+	signal_setup_restart(SIGSYS, handle_signal);
+	signal_setup_restart(SIGTRAP, handle_signal);
+	signal_setup_restart(SIGVTALRM, handle_signal);
+	signal_setup_restart(SIGXCPU, handle_signal);
+	signal_setup_restart(SIGXFSZ, handle_signal);
+#ifdef SIGEMT
+	signal_setup_restart(SIGEMT, handle_signal);
+#endif
+	signal_setup_restart(SIGIO, handle_signal);
+	signal_setup_restart(SIGPWR, handle_signal);
+#ifdef SIGUNUSED
+	signal_setup_restart(SIGUNUSED, handle_signal);
+#endif
+#ifdef SIGRTMIN
+	for (i = SIGRTMIN; i <= SIGRTMAX; i++)
+		signal_setup_restart(i, handle_signal);
+#endif
+#endif
+
+	fp = fopen(pidfile, "w");
+	if (! fp)
+		eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
+	fprintf(fp, "%d\n", getpid());
+	fclose(fp);
+
+	if (svcname)
+		rc_service_daemon_set(svcname, exec, (const char * const *) argv,
+				pidfile, true);
+
+	/* remove the controlling tty */
+#ifdef TIOCNOTTY
+	ioctl(tty_fd, TIOCNOTTY, 0);
+	close(tty_fd);
+#endif
+
+	/*
+	 * Supervisor main loop
+	 */
+	i = 0;
+	while (!exiting) {
+		wait(&i);
+		if (exiting) {
+			signal_setup(SIGCHLD, SIG_IGN);
+			syslog(LOG_INFO, "stopping %s, pid %d", exec, child_pid);
+			nkilled = run_stop_schedule(applet, exec, NULL, child_pid, 0,
+					false, false, true);
+			if (nkilled > 0)
+				syslog(LOG_INFO, "killed %d processes", nkilled);
+		} else {
+			sleep(respawn_delay);
+			if (respawn_max > 0 && respawn_period > 0) {
+				respawn_now = time(NULL);
+				if (first_spawn == 0)
+					first_spawn = respawn_now;
+				if (respawn_now - first_spawn > respawn_period) {
+					respawn_count = 0;
+					first_spawn = 0;
+				} else
+					respawn_count++;
+				if (respawn_count >= respawn_max) {
+					syslog(LOG_WARNING,
+							"respawned \"%s\" too many times, exiting", exec);
+					exiting = true;
+					continue;
+				}
+			}
+			if (WIFEXITED(i))
+				syslog(LOG_WARNING, "%s, pid %d, exited with return code %d",
+						exec, child_pid, WEXITSTATUS(i));
+			else if (WIFSIGNALED(i))
+				syslog(LOG_WARNING, "%s, pid %d, terminated by signal %d",
+						exec, child_pid, WTERMSIG(i));
+			child_pid = fork();
+			if (child_pid == -1)
+				eerrorx("%s: fork: %s", applet, strerror(errno));
+			if (child_pid == 0)
+				child_process(exec, argv);
+		}
 	}
 
-	if (*signame != 0) {
-		syslog(LOG_INFO, "%s: caught signal %s, exiting", applet, signame);
-		exiting = true;
-	} else
-		syslog(LOG_INFO, "%s: caught unknown signal %d", applet, sig);
-
-	/* Restore errno */
-	errno = serrno;
-}
-
-static char * expand_home(const char *home, const char *path)
-{
-	char *opath, *ppath, *p, *nh;
-	size_t len;
-	struct passwd *pw;
-
-	if (!path || *path != '~')
-		return xstrdup(path);
-
-	opath = ppath = xstrdup(path);
-	if (ppath[1] != '/' && ppath[1] != '\0') {
-		p = strchr(ppath + 1, '/');
-		if (p)
-			*p = '\0';
-		pw = getpwnam(ppath + 1);
-		if (pw) {
-			home = pw->pw_dir;
-			ppath = p;
-			if (ppath)
-				*ppath = '/';
-		} else
-			home = NULL;
-	} else
-		ppath++;
-
-	if (!home) {
-	free(opath);
-		return xstrdup(path);
+	if (pidfile && exists(pidfile))
+		unlink(pidfile);
+	if (svcname) {
+		rc_service_daemon_set(svcname, exec, (const char *const *)argv,
+				pidfile, false);
+		rc_service_mark(svcname, RC_SERVICE_STOPPED);
+		rc_service_value_set(svcname, "child_pid", NULL);
 	}
-	if (!ppath) {
-		free(opath);
-		return xstrdup(home);
-	}
-
-	len = strlen(ppath) + strlen(home) + 1;
-	nh = xmalloc(len);
-	snprintf(nh, len, "%s%s", home, ppath);
-	free(opath);
-	return nh;
+	exit(EXIT_SUCCESS);
 }
 
 int main(int argc, char **argv)
 {
 	int opt;
+	char **c;
+	int x;
 	bool start = false;
 	bool stop = false;
+	bool reexec = false;
 	char *exec = NULL;
-	char *pidfile = NULL;
 	char *retry = NULL;
-	int nkilled;
 	int sig = SIGTERM;
 	char *home = NULL;
 	int tid = 0;
-	pid_t child_pid, pid;
-	char *svcname = getenv("RC_SVCNAME");
+	pid_t pid;
 	char *tmp;
 	char *p;
 	char *token;
 	int i;
 	int n;
 	char exec_file[PATH_MAX];
-	int respawn_count = 0;
-	int respawn_delay = 0;
-	int respawn_max = 10;
-	int respawn_period = 5;
-	time_t respawn_now= 0;
-	time_t first_spawn= 0;
+	char name[PATH_MAX];
 	struct timespec ts;
 	struct passwd *pw;
 	struct group *gr;
 	FILE *fp;
 	mode_t numask = 022;
+	int child_argc = 0;
+	char **child_argv = NULL;
+	char *str = NULL;
+	char cmdline[PATH_MAX];
 
 	applet = basename_c(argv[0]);
 	atexit(cleanup);
+	svcname = getenv("RC_SVCNAME");
+	if (!svcname)
+		eerrorx("%s: The RC_SVCNAME environment variable is not set", applet);
+	openlog(applet, LOG_PID, LOG_DAEMON);
+
+	if (argc >= 1 && svcname && strcmp(argv[1], svcname))
+		eerrorx("%s: the first argument must be %s", applet, svcname);
 
 	if ((tmp = getenv("SSD_NICELEVEL")))
 		if (sscanf(tmp, "%d", &nicelevel) != 1)
@@ -461,6 +589,17 @@ int main(int argc, char **argv)
 		}
 	}
 
+	*cmdline = '\0';
+	c = argv;
+	while (c && *c) {
+		strcat(cmdline, *c);
+		strcat(cmdline, " ");
+		c++;
+	}
+	if (svcname) {
+		argc--;
+		argv++;
+	}
 	while ((opt = getopt_long(argc, argv, getoptstring, longopts,
 		    (int *) 0)) != -1)
 		switch (opt) {
@@ -493,8 +632,8 @@ int main(int argc, char **argv)
 
 		case 'P':  /* --respawn-period time */
 			n = sscanf(optarg, "%d", &respawn_period);
-			if (n	!= 1 || respawn_delay < 1)
-				eerrorx("Invalid respawn-delay value '%s'", optarg);
+			if (n	!= 1 || respawn_period < 1)
+				eerrorx("Invalid respawn-period value '%s'", optarg);
 			break;
 
 		case 'S':  /* --start */
@@ -590,86 +729,173 @@ int main(int argc, char **argv)
 		case '2':  /* --stderr /path/to/stderr.logfile */
 			redirect_stderr = optarg;
 			break;
+		case '3':  /* --reexec */
+			reexec = true;
+			break;
 
 		case_RC_COMMON_GETOPT
 		}
 
-	if (!pidfile)
+	if (!pidfile && !reexec)
 		eerrorx("%s: --pidfile must be specified", applet);
-
 	endpwent();
 	argc -= optind;
 	argv += optind;
 	exec = *argv;
 
-	if (start) {
-		if (!exec)
-			eerrorx("%s: nothing to start", applet);
-		if (respawn_delay * respawn_max > respawn_period) {
-			ewarn("%s: Please increase the value of --respawn-period to more "
-				"than %d to avoid infinite respawning", applet, 
-				respawn_delay * respawn_max);
-		}
-		if (retry)
-			parse_schedule(applet, retry, sig);
-		else
-			parse_schedule(applet, NULL, sig);
-	}
-
 	/* Expand ~ */
 	if (ch_dir && *ch_dir == '~')
 		ch_dir = expand_home(home, ch_dir);
 	if (ch_root && *ch_root == '~')
 		ch_root = expand_home(home, ch_root);
-	if (exec) {
-		if (*exec == '~')
-			exec = expand_home(home, exec);
 
-		/* Validate that the binary exists if we are starting */
-		if (*exec == '/' || *exec == '.') {
-			/* Full or relative path */
-			if (ch_root)
-				snprintf(exec_file, sizeof(exec_file),
-				    "%s/%s", ch_root, exec);
-			else
-				snprintf(exec_file, sizeof(exec_file),
-				    "%s", exec);
-		} else {
-			/* Something in $PATH */
-			p = tmp = xstrdup(getenv("PATH"));
-			*exec_file = '\0';
-			while ((token = strsep(&p, ":"))) {
+	umask(numask);
+
+	if (reexec) {
+		str = rc_service_value_get(svcname, "argc");
+		sscanf(str, "%d", &child_argc);
+		child_argv = xmalloc((child_argc + 1) * sizeof(char *));
+		memset(child_argv, 0, (child_argc + 1) * sizeof(char *));
+		for (x = 0; x < child_argc; x++) {
+			sprintf(name, "argv_%d", x);
+			str = rc_service_value_get(svcname, name);
+			child_argv[x] = str;
+		}
+		free(str);
+		str = rc_service_value_get(svcname, "child_pid");
+		sscanf(str, "%d", &child_pid);
+		free(str);
+		exec = rc_service_value_get(svcname, "exec");
+		pidfile = rc_service_value_get(svcname, "pidfile");
+		retry = rc_service_value_get(svcname, "retry");
+		if (retry) {
+			parse_schedule(applet, retry, sig);
+			rc_service_value_set(svcname, "retry", retry);
+		} else
+			parse_schedule(applet, NULL, sig);
+
+		str = rc_service_value_get(svcname, "respawn_delay");
+		sscanf(str, "%d", &respawn_delay);
+		str = rc_service_value_get(svcname, "respawn_max");
+		sscanf(str, "%d", &respawn_max);
+		supervisor(exec, child_argv);
+	} else if (start) {
+		if (exec) {
+			if (*exec == '~')
+				exec = expand_home(home, exec);
+
+			/* Validate that the binary exists if we are starting */
+			if (*exec == '/' || *exec == '.') {
+				/* Full or relative path */
 				if (ch_root)
 					snprintf(exec_file, sizeof(exec_file),
-					    "%s/%s/%s",
-					    ch_root, token, exec);
+				    	"%s/%s", ch_root, exec);
 				else
 					snprintf(exec_file, sizeof(exec_file),
-					    "%s/%s", token, exec);
-				if (exists(exec_file))
-					break;
+				    "%s", exec);
+			} else {
+				/* Something in $PATH */
+				p = tmp = xstrdup(getenv("PATH"));
 				*exec_file = '\0';
+				while ((token = strsep(&p, ":"))) {
+					if (ch_root)
+						snprintf(exec_file, sizeof(exec_file),
+					    	"%s/%s/%s",
+					    	ch_root, token, exec);
+					else
+						snprintf(exec_file, sizeof(exec_file),
+					    	"%s/%s", token, exec);
+					if (exists(exec_file))
+						break;
+					*exec_file = '\0';
+				}
+				free(tmp);
 			}
-			free(tmp);
-		}
-	}
-	if (start && !exists(exec_file))
-		eerrorx("%s: %s does not exist", applet,
-		    *exec_file ? exec_file : exec);
+			if ( !exists(exec_file))
+				eerrorx("%s: %s does not exist", applet,
+				    *exec_file ? exec_file : exec);
+		} else
+			eerrorx("%s: nothing to start", applet);
 
-	if (stop) {
+		pid = get_pid(applet, pidfile);
+		if (pid != -1)
+			if (do_stop(applet, exec, (const char * const *)argv, pid, uid,
+						0, false, true) > 0)
+				eerrorx("%s: %s is already running", applet, exec);
+
+		if (respawn_delay * respawn_max > respawn_period)
+			ewarn("%s: Please increase the value of --respawn-period to more "
+				"than %d to avoid infinite respawning", applet, 
+				respawn_delay * respawn_max);
+
+		if (retry) {
+			parse_schedule(applet, retry, sig);
+			rc_service_value_set(svcname, "retry", retry);
+		} else
+			parse_schedule(applet, NULL, sig);
+
+		einfov("Detaching to start `%s'", exec);
+		syslog(LOG_INFO, "Supervisor command line: %s", cmdline);
+
+		/* Remove existing pidfile */
+		if (pidfile)
+			unlink(pidfile);
+
+		/* Make sure we can write a pid file */
+		fp = fopen(pidfile, "w");
+		if (! fp)
+			eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
+		fclose(fp);
+
+		rc_service_value_set(svcname, "pidfile", pidfile);
+		sprintf(name, "%i", respawn_delay);
+		rc_service_value_set(svcname, "respawn_delay", name);
+		sprintf(name, "%i", respawn_max);
+		rc_service_value_set(svcname, "respawn_max", name);
+		sprintf(name, "%i", respawn_period);
+		rc_service_value_set(svcname, "respawn_period", name);
+		child_pid = fork();
+		if (child_pid == -1)
+			eerrorx("%s: fork: %s", applet, strerror(errno));
+		if (child_pid != 0)
+			/* first parent process, do nothing. */
+			exit(EXIT_SUCCESS);
+#ifdef TIOCNOTTY
+		tty_fd = open("/dev/tty", O_RDWR);
+#endif
+		devnull_fd = open("/dev/null", O_RDWR);
+		child_pid = fork();
+		if (child_pid == -1)
+			eerrorx("%s: fork: %s", applet, strerror(errno));
+		else if (child_pid != 0) {
+			c = argv;
+			x = 0;
+			while (c && *c) {
+				snprintf(name, sizeof(name), "argv_%-d",x);
+				rc_service_value_set(svcname, name, *c);
+				x++;
+				c++;
+			}
+			sprintf(name, "%d", x);
+				rc_service_value_set(svcname, "argc", name);
+			rc_service_value_set(svcname, "exec", exec);
+			supervisor(exec, argv);
+		} else
+			child_process(exec, argv);
+	} else if (stop) {
 		pid = get_pid(applet, pidfile);
 		if (pid != -1) {
 			i = kill(pid, SIGTERM);
 			if (i != 0)
 				/* We failed to send the signal */
-				exit(EXIT_FAILURE);
-
-			/* wait for the supervisor to go down */
-			while (kill(pid, 0) == 0) {
-				ts.tv_sec = 0;
-				ts.tv_nsec = 1;
-				nanosleep(&ts, NULL);
+				ewarn("Unable to shut down the supervisor");
+			else {
+				/* wait for the supervisor to go down */
+				while (kill(pid, 0) == 0) {
+					ts.tv_sec = 0;
+					ts.tv_nsec = 1;
+					nanosleep(&ts, NULL);
+				}
 			}
 		}
 
@@ -687,119 +913,4 @@ int main(int argc, char **argv)
 		}
 		exit(EXIT_SUCCESS);
 	}
-
-	pid = get_pid(applet, pidfile);
-	if (pid != -1)
-		if (kill(pid, 0) == 0)
-			eerrorx("%s: %s is already running", applet, exec);
-
-	einfov("Detaching to start `%s'", exec);
-	eindentv();
-
-	/* Remove existing pidfile */
-	if (pidfile)
-		unlink(pidfile);
-
-	/*
-	 * Make sure we can write a pid file
-	 */
-	fp = fopen(pidfile, "w");
-	if (! fp)
-		eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
-	fclose(fp);
-
-	child_pid = fork();
-	if (child_pid == -1)
-		eerrorx("%s: fork: %s", applet, strerror(errno));
-
-	/* first parent process, do nothing. */
-	if (child_pid != 0)
-		exit(EXIT_SUCCESS);
-
-#ifdef TIOCNOTTY
-	tty_fd = open("/dev/tty", O_RDWR);
-#endif
-	devnull_fd = open("/dev/null", O_RDWR);
-	child_pid = fork();
-	if (child_pid == -1)
-		eerrorx("%s: fork: %s", applet, strerror(errno));
-
-	if (child_pid != 0) {
-		/* this is the supervisor */
-		umask(numask);
-		openlog(applet, LOG_PID, LOG_DAEMON);
-		signal_setup(SIGTERM, handle_signal);
-
-		fp = fopen(pidfile, "w");
-		if (! fp)
-			eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
-		fprintf(fp, "%d\n", getpid());
-		fclose(fp);
-
-		if (svcname)
-			rc_service_daemon_set(svcname, exec,
-									(const char * const *) argv, pidfile, true);
-
-	/* remove the controlling tty */
-#ifdef TIOCNOTTY
-		ioctl(tty_fd, TIOCNOTTY, 0);
-		close(tty_fd);
-#endif
-
-		/*
-		 * Supervisor main loop
-		 */
-		i = 0;
-		while (!exiting) {
-			wait(&i);
-			if (exiting) {
-				signal_setup(SIGCHLD, SIG_IGN);
-				syslog(LOG_INFO, "stopping %s, pid %d", exec, child_pid);
-				nkilled = run_stop_schedule(applet, exec, NULL, child_pid,
-						0, false, false, true);
-				if (nkilled > 0)
-					syslog(LOG_INFO, "killed %d processes", nkilled);
-			} else {
-				sleep(respawn_delay);
-				if (respawn_max > 0 && respawn_period > 0) {
-					respawn_now = time(NULL);
-					if (first_spawn == 0)
-						first_spawn = respawn_now;
-					if (respawn_now - first_spawn > respawn_period) {
-						respawn_count = 0;
-						first_spawn = 0;
-					} else
-						respawn_count++;
-					if (respawn_count >= respawn_max) {
-						syslog(LOG_WARNING, "respawned \"%s\" too many times, "
-								"exiting", exec);
-						exiting = true;
-						continue;
-					}
-				}
-				if (WIFEXITED(i))
-					syslog(LOG_WARNING, "%s, pid %d, exited with return code %d",
-							exec, child_pid, WEXITSTATUS(i));
-				else if (WIFSIGNALED(i))
-					syslog(LOG_WARNING, "%s, pid %d, terminated by signal %d",
-							exec, child_pid, WTERMSIG(i));
-				child_pid = fork();
-				if (child_pid == -1)
-					eerrorx("%s: fork: %s", applet, strerror(errno));
-				if (child_pid == 0)
-					child_process(exec, argv, svcname, respawn_count);
-			}
-		}
-
-		if (pidfile && exists(pidfile))
-			unlink(pidfile);
-		if (svcname) {
-			rc_service_daemon_set(svcname, exec,
-			    (const char *const *)argv,
-			    pidfile, false);
-			rc_service_mark(svcname, RC_SERVICE_STOPPED);
-		}
-		exit(EXIT_SUCCESS);
-	} else if (child_pid == 0)
-		child_process(exec, argv, svcname, respawn_count);
 }