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Don't risk catching a signal while handling a signal for a dying child, as we

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can then end up not properly clearing wtmp/utmp entries.

PR:		bin/37934
Submitted by:	Sandeep Kumar <skumar@juniper.net>
Reviewed by:	markm
MFC after:	2 weeks


git-svn-id: http://svn0.us-east.freebsd.org/base/head/contrib/telnet@97341 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
This commit is contained in:
jmallett 2002-05-27 08:10:24 +00:00
parent 0a0dabb57b
commit e151b0ff25
1 changed files with 8 additions and 0 deletions
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8
telnetd/sys_term.c
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@ -1317,8 +1317,16 @@ void
cleanup(int sig __unused)
{
char *p;
sigset_t mask;
p = line + sizeof(_PATH_DEV) - 1;
/*
* Block all signals before clearing the utmp entry. We don't want to
* be called again after calling logout() and then not add the wtmp
* entry because of not finding the corresponding entry in utmp.
*/
sigfillset(&mask);
sigprocmask(SIG_SETMASK, &mask, NULL);
if (logout(p))
logwtmp(p, "", "");
(void)chmod(line, 0666);