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Coverity CID 3367, 3368: Avoid NULL deref.

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This commit is contained in:
christos 2006-05-13 21:54:13 +00:00
parent 4f633ea02a
commit f88f667da4
1 changed files with 10 additions and 7 deletions
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17
bin/ksh/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.6 2004/07/07 19:20:09 mycroft Exp $ */
/* $NetBSD: trap.c,v 1.7 2006/05/13 21:54:13 christos Exp $ */
/*
* signal handling
@ -6,7 +6,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: trap.c,v 1.6 2004/07/07 19:20:09 mycroft Exp $");
__RCSID("$NetBSD: trap.c,v 1.7 2006/05/13 21:54:13 christos Exp $");
#endif
@ -316,11 +316,14 @@ settrap(p, s)
if (p->trap)
afree(p->trap, APERM);
p->trap = str_save(s, APERM); /* handles s == 0 */
p->flags |= TF_CHANGED;
f = !s ? SIG_DFL : s[0] ? trapsig : SIG_IGN;
p->flags |= TF_USER_SET;
p->flags |= TF_CHANGED|TF_USER_SET;
if (s) {
p->trap = str_save(s, APERM);
f = s[0] ? trapsig : SIG_IGN;
} else {
p->trap = NULL;
f = SIG_DFL;
}
if ((p->flags & (TF_DFL_INTR|TF_FATAL)) && f == SIG_DFL)
f = trapsig;
else if (p->flags & TF_SHELL_USES) {