diff options
| -rw-r--r-- | usr.bin/mail/popen.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/usr.bin/mail/popen.c b/usr.bin/mail/popen.c index 7cf344b74f6..7cdd016aee9 100644 --- a/usr.bin/mail/popen.c +++ b/usr.bin/mail/popen.c @@ -1,4 +1,4 @@ -/* $OpenBSD: popen.c,v 1.2 1996/06/11 12:53:47 deraadt Exp $ */ +/* $OpenBSD: popen.c,v 1.3 1996/06/26 21:22:34 dm Exp $ */ /* $NetBSD: popen.c,v 1.4 1996/06/08 19:48:35 christos Exp $ */ /* @@ -38,7 +38,7 @@ #if 0 static char sccsid[] = "@(#)popen.c 8.1 (Berkeley) 6/6/93"; #else -static char rcsid[] = "$OpenBSD: popen.c,v 1.2 1996/06/11 12:53:47 deraadt Exp $"; +static char rcsid[] = "$OpenBSD: popen.c,v 1.3 1996/06/26 21:22:34 dm Exp $"; #endif #endif /* not lint */ @@ -283,11 +283,13 @@ prepare_child(nset, infd, outfd) dup2(infd, 0); if (outfd >= 0) dup2(outfd, 1); - for (i = 1; i <= NSIG; i++) - if (sigismember(nset, i)) - (void) signal(i, SIG_IGN); - if (!sigismember(nset, SIGINT)) - (void) signal(SIGINT, SIG_DFL); + if (nset) { + for (i = 1; i <= NSIG; i++) + if (sigismember(nset, i)) + (void) signal(i, SIG_IGN); + if (!sigismember(nset, SIGINT)) + (void) signal(SIGINT, SIG_DFL); + } sigfillset(&fset); (void) sigprocmask(SIG_UNBLOCK, &fset, NULL); } |