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receive-pack: ignore SIGPIPE while reporting status to client 

Before running the post-receive hook, status info is reported back to
the client. If a remote client exits before or during the status report,
receive-pack is killed by SIGPIPE and post-receive is never executed.

The post-receive hook is often used to send email notifications (see
contrib/hooks/post-receive-email), update bug trackers, start automatic
builds, etc. Not executing it after an interrupted yet "successful" push
can lead to inconsistencies.

Ignore SIGPIPE before reporting status to the client to increase the
chances of post-receive running if pre-receive was successful. This does
not guarantee 100% consistency but it should resist early disconnection
by the client.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Robin Jarry 2021-11-10 10:29:42 +01:00 committed by Junio C Hamano
parent 5fbd2fc599
commit d34182b9e3
1 changed files with 2 additions and 0 deletions
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2
builtin/receive-pack.c
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@ -2563,10 +2563,12 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
&push_options);
if (pack_lockfile)
unlink_or_warn(pack_lockfile);
sigchain_push(SIGPIPE, SIG_IGN);
if (report_status_v2)
report_v2(commands, unpack_status);
else if (report_status)
report(commands, unpack_status);
sigchain_pop(SIGPIPE);
run_receive_hook(commands, "post-receive", 1,
&push_options);
run_update_post_hook(commands);