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jshn: shorten JSON_VAR to J_V
[project/libubox.git]
/
uloop.c
diff --git
a/uloop.c
b/uloop.c
index
9fedcce
..
9a77ce4
100644
(file)
--- a/
uloop.c
+++ b/
uloop.c
@@
-558,28
+558,37
@@
static void uloop_sigchld(int signo)
do_sigchld = true;
}
do_sigchld = true;
}
-static void uloop_
setup_signals(
bool add)
+static void uloop_
install_handler(int signum, void (*handler)(int), struct sigaction* old,
bool add)
{
{
- static struct sigaction old_sigint, old_sigchld;
struct sigaction s;
struct sigaction s;
+ struct sigaction *act;
- memset(&s, 0, sizeof(struct sigaction));
+ act = NULL;
+ sigaction(signum, NULL, &s);
if (add) {
if (add) {
- s.sa_handler = uloop_handle_sigint;
- s.sa_flags = 0;
- } else {
- s = old_sigint;
+ if (s.sa_handler == SIG_DFL) { /* Do not override existing custom signal handlers */
+ memcpy(old, &s, sizeof(struct sigaction));
+ s.sa_handler = handler;
+ s.sa_flags = 0;
+ act = &s;
+ }
+ }
+ else if (s.sa_handler == handler) { /* Do not restore if someone modified our handler */
+ act = old;
}
}
- sigaction(SIGINT, &s, &old_sigint);
+ if (act != NULL)
+ sigaction(signum, act, NULL);
+}
- if (add)
- s.sa_handler = uloop_sigchld;
- else
- s = old_sigchld;
+static void uloop_setup_signals(bool add)
+{
+ static struct sigaction old_sigint, old_sigchld, old_sigterm;
- sigaction(SIGCHLD, &s, &old_sigchld);
+ uloop_install_handler(SIGINT, uloop_handle_sigint, &old_sigint, add);
+ uloop_install_handler(SIGTERM, uloop_handle_sigint, &old_sigterm, add);
+ uloop_install_handler(SIGCHLD, uloop_sigchld, &old_sigchld, add);
}
static int uloop_get_next_timeout(struct timeval *tv)
}
static int uloop_get_next_timeout(struct timeval *tv)