refactor signal handling for cleanup functions

The current code is very inconsistent about which signals
are caught for doing cleanup of temporary files and lock
files. Some callsites checked only SIGINT, while others
checked a variety of death-dealing signals.

This patch factors out those signals to a single function,
and then calls it everywhere. For some sites, that means
this is a simple clean up. For others, it is an improvement
in that they will now properly clean themselves up after a
larger variety of signals.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/http-push.c b/http-push.c
index dec395dee..7d5c23edc 100644
--- a/http-push.c
+++ b/http-push.c
@@ -2262,10 +2262,7 @@ int main(int argc, char **argv)
 		goto cleanup;
 	}
 
-	sigchain_push(SIGINT, remove_locks_on_signal);
-	sigchain_push(SIGHUP, remove_locks_on_signal);
-	sigchain_push(SIGQUIT, remove_locks_on_signal);
-	sigchain_push(SIGTERM, remove_locks_on_signal);
+	sigchain_push_common(remove_locks_on_signal);
 
 	/* Check whether the remote has server info files */
 	remote->can_update_info_refs = 0;