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Merge pull request #1327 from brauner/2016-11-26/make_lxc_monitord_async_signal_safe

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lxc_monitord: make lxc-monitord async signal safe
This commit is contained in:
Stéphane Graber 2016-11-26 22:56:58 -05:00 committed by GitHub
commit 1e0a00460a
1 changed files with 11 additions and 3 deletions
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14
src/lxc/lxc_monitord.c
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@ -31,6 +31,7 @@
#include <unistd.h>
#include <net/if.h>
#include <netinet/in.h>
#include <setjmp.h>
#include <sys/epoll.h>
#include <sys/param.h>
#include <sys/socket.h>
@ -48,6 +49,8 @@
lxc_log_define(lxc_monitord, lxc);
sigjmp_buf mark;
static void lxc_monitord_cleanup(void);
/*
@ -336,9 +339,7 @@ static void lxc_monitord_cleanup(void)
static void lxc_monitord_sig_handler(int sig)
{
INFO("Caught signal %d.", sig);
lxc_monitord_cleanup();
exit(EXIT_SUCCESS);
siglongjmp(mark, 1);
}
int main(int argc, char *argv[])
@ -384,6 +385,9 @@ int main(int argc, char *argv[])
signal(SIGBUS, lxc_monitord_sig_handler);
signal(SIGTERM, lxc_monitord_sig_handler);
if (sigsetjmp(mark, 1) != 0)
goto on_signal;
ret = EXIT_FAILURE;
memset(&mon, 0, sizeof(mon));
mon.lxcpath = lxcpath;
@ -427,4 +431,8 @@ int main(int argc, char *argv[])
on_error:
exit(ret);
on_signal:
lxc_monitord_cleanup();
exit(EXIT_SUCCESS);
}