From: Petr Baudis <pasky@suse.cz>
Date: Tue, 31 Jan 2006 23:40:33 +0000 (+0100)
Subject: Allow diff and index commands to be interrupted
X-Git-Tag: v1.2.0~82
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=6a1f79c1f1a54f97f122a86c71837fb1f1408b67;p=git.git

Allow diff and index commands to be interrupted

So far, e.g. git-update-index --refresh was basically uninterruptable
by ctrl-c, since it hooked the SIGINT handler, but that handler would
only unlink the lockfile but not actually quit. This makes it propagate
the signal to the default handler.

Note that I expected it to work without resetting the signal handler to
SIG_DFL, but without that it ended in an infinite loop of tgkill()s -
is my glibc violating SUS or what?

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
---

diff --git a/diff.c b/diff.c
index 8ae6dbc64..ec51e7dd1 100644
--- a/diff.c
+++ b/diff.c
@@ -555,6 +555,8 @@ static void remove_tempfile(void)
 static void remove_tempfile_on_signal(int signo)
 {
 	remove_tempfile();
+	signal(SIGINT, SIG_DFL);
+	raise(signo);
 }
 
 /* An external diff command takes:
diff --git a/index.c b/index.c
index ad0eafedc..f92b960ae 100644
--- a/index.c
+++ b/index.c
@@ -18,6 +18,8 @@ static void remove_lock_file(void)
 static void remove_lock_file_on_signal(int signo)
 {
 	remove_lock_file();
+	signal(SIGINT, SIG_DFL);
+	raise(signo);
 }
 
 int hold_index_file_for_update(struct cache_file *cf, const char *path)