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Code Issues Releases Wiki Activity

always ignore sigpipe

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This commit is contained in:
Bob Halley
1999-05-12 22:54:46 +00:00
parent de5c46ae57
commit dd324bd791
1 changed files with 32 additions and 20 deletions
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52
lib/isc/unix/app.c
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@@ -47,19 +47,34 @@ static pthread_t main_thread;
#ifndef HAVE_SIGWAIT
static void
empty_action(int arg) {
no_action(int arg) {
(void)arg;
}
#endif
static isc_result_t
handle_signal(int sig, void (*handler)(int)) {
struct sigaction sa;
memset(&sa, 0, sizeof sa);
sa.sa_handler = handler;
if (sigfillset(&sa.sa_mask) != 0 ||
sigaction(sig, &sa, NULL) < 0) {
UNEXPECTED_ERROR(__FILE__, __LINE__,
"handle_signal() %d setup: %s", sig,
strerror(errno));
return (ISC_R_UNEXPECTED);
}
return (ISC_R_SUCCESS);
}
isc_result_t
isc_app_start(void) {
isc_result_t result;
int presult;
sigset_t sset;
#ifndef HAVE_SIGWAIT
struct sigaction sa;
#endif
/*
* Start an ISC library application.
@@ -94,24 +109,21 @@ isc_app_start(void) {
* the default actions, regardless of what we do with
* pthread_sigmask().
*/
memset(&sa, 0, sizeof sa);
sa.sa_handler = empty_action;
if (sigfillset(&sa.sa_mask) != 0 ||
sigaction(SIGINT, &sa, NULL) < 0) {
UNEXPECTED_ERROR(__FILE__, __LINE__,
"isc_app_run() SIGINT setup: %s",
strerror(errno));
return (ISC_R_UNEXPECTED);
}
if (sigfillset(&sa.sa_mask) != 0 ||
sigaction(SIGTERM, &sa, NULL) < 0) {
UNEXPECTED_ERROR(__FILE__, __LINE__,
"isc_app_run() SIGTERM setup: %s",
strerror(errno));
return (ISC_R_UNEXPECTED);
}
result = handle_signal(SIGINT, no_action);
if (result != ISC_R_SUCCESS)
return (result);
result = handle_signal(SIGTERM, no_action);
if (result != ISC_R_SUCCESS)
return (result);
#endif
/*
* Always ignore SIGPIPE.
*/
result = handle_signal(SIGPIPE, SIG_IGN);
if (result != ISC_R_SUCCESS)
return (result);
/*
* Block SIGINT and SIGTERM.
*