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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-11-06 22:39:57 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-11-06 22:39:57 +0000
commit3854c5ddf4eb267e4e53796eaa1051421dcb4e08 (patch)
tree7110eecec665bc64fefcdedaa29eb2e2fdf2df41 /runit
parent70e8f49f71b824bbc7c5ec825eb33108134d1ee5 (diff)
downloadbusybox-3854c5ddf4eb267e4e53796eaa1051421dcb4e08.tar.gz
busybox-3854c5ddf4eb267e4e53796eaa1051421dcb4e08.tar.bz2
runsvdir: alternative methon of supporting runsvdir-as-init. +66 bytes.
*: s/int/pid_t where appropriate
Diffstat (limited to 'runit')
-rw-r--r--runit/runsv.c4
-rw-r--r--runit/runsvdir.c54
-rw-r--r--runit/svlogd.c3
3 files changed, 37 insertions, 24 deletions
diff --git a/runit/runsv.c b/runit/runsv.c
index bd0f3dcc2..56244d03f 100644
--- a/runit/runsv.c
+++ b/runit/runsv.c
@@ -247,7 +247,7 @@ static void update_status(struct svdir *s)
static unsigned custom(struct svdir *s, char c)
{
- int pid;
+ pid_t pid;
int w;
char a[10];
struct stat st;
@@ -584,7 +584,7 @@ int runsv_main(int argc UNUSED_PARAM, char **argv)
continue;
for (;;) {
- int child;
+ pid_t child;
int wstat;
child = wait_any_nohang(&wstat);
diff --git a/runit/runsvdir.c b/runit/runsvdir.c
index 581787f03..9d560e097 100644
--- a/runit/runsvdir.c
+++ b/runit/runsvdir.c
@@ -107,7 +107,7 @@ static NOINLINE pid_t runsv(const char *name)
}
if (pid == 0) {
/* child */
- if (option_mask32) /* -P option? */
+ if (option_mask32 & 1) /* -P option? */
setsid();
/* man execv:
* "Signals set to be caught by the calling process image
@@ -217,17 +217,20 @@ int runsvdir_main(int argc UNUSED_PARAM, char **argv)
time_t last_mtime = 0;
int wstat;
int curdir;
- int pid;
+ pid_t pid;
unsigned deadline;
unsigned now;
unsigned stampcheck;
int i;
int need_rescan = 1;
+ char *opt_s_argv[3];
INIT_G();
opt_complementary = "-1";
- getopt32(argv, "P");
+ opt_s_argv[0] = NULL;
+ opt_s_argv[2] = NULL;
+ getopt32(argv, "Ps:", &opt_s_argv[0]);
argv += optind;
bb_signals(0
@@ -335,7 +338,6 @@ int runsvdir_main(int argc UNUSED_PARAM, char **argv)
pfd[0].revents = 0;
#endif
deadline = (need_rescan ? 1 : 5);
- do_sleep:
sig_block(SIGCHLD);
#if ENABLE_FEATURE_RUNSVDIR_LOG
if (rplog)
@@ -357,27 +359,37 @@ int runsvdir_main(int argc UNUSED_PARAM, char **argv)
}
}
#endif
+ if (!bb_got_signal)
+ continue;
+
+ /* -s SCRIPT: useful if we are init.
+ * In this case typically script never returns,
+ * it halts/powers off/reboots the system. */
+ if (opt_s_argv[0]) {
+ /* Single parameter: signal# */
+ opt_s_argv[1] = utoa(bb_got_signal);
+ pid = spawn(opt_s_argv);
+ if (pid > 0) {
+ /* Remebering to wait for _any_ children,
+ * not just pid */
+ while (wait(NULL) != pid)
+ continue;
+ }
+ }
+
switch (bb_got_signal) {
- case 0: /* we are not signaled, business as usual */
- break;
case SIGHUP:
for (i = 0; i < svnum; i++)
if (sv[i].pid)
kill(sv[i].pid, SIGTERM);
- /* fall through */
- case SIGTERM:
- /* exit, unless we are init */
- if (getpid() != 1)
- goto ret;
- default:
- /* so we are init. do not exit,
- * and pause respawning - we may be rebooting
- * (but SIGHUP is not a reboot, make short pause) */
- deadline = (SIGHUP == bb_got_signal) ? 5 : 60;
- bb_got_signal = 0;
- goto do_sleep;
+ /* Fall through */
+ default: /* SIGTERM (or SIGUSRn if we are init) */
+ /* Exit unless we are init */
+ if (getpid() == 1)
+ break;
+ return (SIGHUP == bb_got_signal) ? 111 : EXIT_SUCCESS;
}
- }
- ret:
- return (SIGHUP == bb_got_signal) ? 111 : EXIT_SUCCESS;
+
+ bb_got_signal = 0;
+ } /* for (;;) */
}
diff --git a/runit/svlogd.c b/runit/svlogd.c
index 960879513..64191281e 100644
--- a/runit/svlogd.c
+++ b/runit/svlogd.c
@@ -797,7 +797,8 @@ static void sig_term_handler(int sig_no UNUSED_PARAM)
static void sig_child_handler(int sig_no UNUSED_PARAM)
{
- int pid, l;
+ pid_t pid;
+ int l;
if (verbose)
bb_error_msg(INFO"sig%s received", "child");