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Reset SIGCHLD handler to SIG_DFL. 

If run with "-c", both child and parent script processes will handle
SIGCHLD resulting in a possible duplicate "Script done" line in the
output.  This fixes bin/54514.
This commit is contained in:
hgutch 2023-05-09 15:43:39 +00:00
parent b889b215f6
commit 836e5e938d
1 changed files with 3 additions and 2 deletions
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5
usr.bin/script/script.c
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@ -1,4 +1,4 @@
/* $NetBSD: script.c,v 1.33 2022/02/13 19:40:14 christos Exp $ */
/* $NetBSD: script.c,v 1.34 2023/05/09 15:43:39 hgutch Exp $ */
/*
* Copyright (c) 1980, 1992, 1993
@ -39,7 +39,7 @@ __COPYRIGHT("@(#) Copyright (c) 1980, 1992, 1993\
#if 0
static char sccsid[] = "@(#)script.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: script.c,v 1.33 2022/02/13 19:40:14 christos Exp $");
__RCSID("$NetBSD: script.c,v 1.34 2023/05/09 15:43:39 hgutch Exp $");
#endif /* not lint */
#include <sys/types.h>
@ -192,6 +192,7 @@ main(int argc, char *argv[])
fail();
}
if (child == 0) {
(void)xsignal(SIGCHLD, SIG_DFL);
subchild = child = fork();
if (child == -1) {
warn("fork");