diff options
| author | cwt <cwt@FreeBSD.org> | 1998-12-28 00:39:14 +0000 |
|---|---|---|
| committer | cwt <cwt@FreeBSD.org> | 1998-12-28 00:39:14 +0000 |
| commit | 1effc86f4704c2a9c14bcebb2f6cbbbfd14b4555 (patch) | |
| tree | 7bfb290bea6219fddfdc78409e4a7284167dcc44 | |
| parent | d142d46d655f4327357ea1752d1561f93b63c16f (diff) | |
| download | FreeBSD-src-1effc86f4704c2a9c14bcebb2f6cbbbfd14b4555.zip FreeBSD-src-1effc86f4704c2a9c14bcebb2f6cbbbfd14b4555.tar.gz | |
Block SIGHUP during call to gethostbyaddr().
PR: 5548
Reviewed by: Matthew Dillon <dillon@apollo.backplane.com>
Obtained from: OpenBSD
| -rw-r--r-- | usr.sbin/syslogd/syslogd.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/usr.sbin/syslogd/syslogd.c b/usr.sbin/syslogd/syslogd.c index 685adaf..c0edf91 100644 --- a/usr.sbin/syslogd/syslogd.c +++ b/usr.sbin/syslogd/syslogd.c @@ -42,7 +42,7 @@ static const char copyright[] = static char sccsid[] = "@(#)syslogd.c 8.3 (Berkeley) 4/4/94"; #endif static const char rcsid[] = - "$Id: syslogd.c,v 1.42 1998/11/05 10:51:21 dg Exp $"; + "$Id: syslogd.c,v 1.43 1998/12/04 06:49:20 jkh Exp $"; #endif /* not lint */ /* @@ -1066,6 +1066,7 @@ cvthname(f) struct sockaddr_in *f; { struct hostent *hp; + sigset_t omask, nmask; char *p; dprintf("cvthname(%s)\n", inet_ntoa(f->sin_addr)); @@ -1074,8 +1075,12 @@ cvthname(f) dprintf("Malformed from address\n"); return ("???"); } + sigemptyset(&nmask); + sigaddset(&nmask, SIGHUP); + sigprocmask(SIG_BLOCK, &nmask, &omask); hp = gethostbyaddr((char *)&f->sin_addr, sizeof(struct in_addr), f->sin_family); + sigprocmask(SIG_SETMASK, &omask, NULL); if (hp == 0) { dprintf("Host name for your address (%s) unknown\n", inet_ntoa(f->sin_addr)); |
