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Description: sshd: Ignore subsequent SIGHUPs during re-exec
Prevents two HUPs in quick succession from resulting in sshd dying.
Author: Colin Watson <cjwatson@debian.org>
Bug: https://bugzilla.mindrot.org/show_bug.cgi?id=1692
Bug-Ubuntu: https://bugs.launchpad.net/bugs/497781
Last-Update: 2010-02-28
Index: b/sshd.c
===================================================================
--- a/sshd.c
+++ b/sshd.c
@@ -318,6 +318,7 @@
close_listen_socks();
close_startup_pipes();
alarm(0); /* alarm timer persists across exec */
+ signal(SIGHUP, SIG_IGN); /* will be restored after exec */
execv(saved_argv[0], saved_argv);
logit("RESTART FAILED: av[0]='%.100s', error: %.100s.", saved_argv[0],
strerror(errno));
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