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authorWilliam Hubbs <w.d.hubbs@gmail.com>2017-09-06 13:22:30 -0500
committerWilliam Hubbs <w.d.hubbs@gmail.com>2017-09-06 17:22:21 -0500
commit17b5cc78d35dc5fe4904e5951715c3e0d07d6343 (patch)
tree9ec182244e62c715b2115269d538a594ff40f377 /src/rc/supervise-daemon.c
parent36a0ab9054512ade413226fb8e8b28060045e9a4 (diff)
add retry option to supervise-daemon
The --retry option for supervise-daemon defines how the supervisor will attempt to stop the child process it is monitoring. It is defined when the supervisor is started since stopping the supervisor just sends a signal to the active supervisor. This fixes #160.
Diffstat (limited to 'src/rc/supervise-daemon.c')
-rw-r--r--src/rc/supervise-daemon.c26
1 files changed, 23 insertions, 3 deletions
diff --git a/src/rc/supervise-daemon.c b/src/rc/supervise-daemon.c
index c59fb099..3923dab5 100644
--- a/src/rc/supervise-daemon.c
+++ b/src/rc/supervise-daemon.c
@@ -61,12 +61,13 @@ static struct pam_conv conv = { NULL, NULL};
#include "queue.h"
#include "rc.h"
#include "rc-misc.h"
+#include "rc-schedules.h"
#include "_usage.h"
#include "helpers.h"
const char *applet = NULL;
const char *extraopts = NULL;
-const char *getoptstring = "D:d:e:g:I:Kk:m:N:p:r:Su:1:2:" \
+const char *getoptstring = "D:d:e:g:I:Kk:m:N:p:R:r:Su:1:2:" \
getoptstring_COMMON;
const struct option longopts[] = {
{ "respawn-delay", 1, NULL, 'D'},
@@ -80,6 +81,7 @@ const struct option longopts[] = {
{ "nicelevel", 1, NULL, 'N'},
{ "pidfile", 1, NULL, 'p'},
{ "respawn-period", 1, NULL, 'P'},
+ { "retry", 1, NULL, 'R'},
{ "chroot", 1, NULL, 'r'},
{ "start", 0, NULL, 'S'},
{ "user", 1, NULL, 'u'},
@@ -99,6 +101,7 @@ const char * const longopts_help[] = {
"Set a nicelevel when starting",
"Match pid found in this file",
"Set respawn time period",
+ "Retry schedule to use when stopping",
"Chroot to this directory",
"Start daemon",
"Change the process user",
@@ -410,6 +413,9 @@ int main(int argc, char **argv)
bool stop = 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;
@@ -534,6 +540,9 @@ int main(int argc, char **argv)
pidfile = optarg;
break;
+ case 'R': /* --retry <schedule>|timeout */
+ retry = optarg;
+ break;
case 'r': /* --chroot /new/root */
ch_root = optarg;
break;
@@ -605,6 +614,10 @@ int main(int argc, char **argv)
"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 ~ */
@@ -655,9 +668,13 @@ int main(int argc, char **argv)
else
i = kill(pid, SIGTERM);
if (i != 0)
- /* We failed to stop something */
+ /* We failed to send the signal */
exit(EXIT_FAILURE);
+ /* wait for the supervisor to go down */
+ while (kill(pid, 0) == 0)
+ sleep(1);
+
/* Even if we have not actually killed anything, we should
* remove information about it as it may have unexpectedly
* crashed out. We should also return success as the end
@@ -737,7 +754,10 @@ int main(int argc, char **argv)
wait(&i);
if (exiting) {
syslog(LOG_INFO, "stopping %s, pid %d", exec, child_pid);
- kill(child_pid, SIGTERM);
+ nkilled = run_stop_schedule(applet, exec, NULL, child_pid,
+ 0, false, false);
+ if (nkilled > 0)
+ syslog(LOG_INFO, "killed %d processes", nkilled);
} else {
sleep(respawn_delay);
if (respawn_max > 0 && respawn_period > 0) {