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authorDenys Vlasenko2009-09-25 02:12:27 +0200
committerDenys Vlasenko2009-09-25 02:12:27 +0200
commite305c28285ac365d6573802b33a2d542fd236022 (patch)
treee5aad8a39d4c09fedaa99a98293a7303f22cd91b /shell
parentc297ea97e288da16216d5c121ddefa7b61923847 (diff)
downloadbusybox-e305c28285ac365d6573802b33a2d542fd236022.zip
busybox-e305c28285ac365d6573802b33a2d542fd236022.tar.gz
ash: slightly better (more correct) code for "trap hack"
function old new delta changepath 194 195 +1 evalvar 1373 1371 -2 forkchild 602 590 -12 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell')
-rw-r--r--shell/ash.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/shell/ash.c b/shell/ash.c
index b30dc77..37bdc70 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -4526,7 +4526,9 @@ clear_traps(void)
for (tp = trap; tp < &trap[NSIG]; tp++) {
if (*tp && **tp) { /* trap not NULL or "" (SIG_IGN) */
INT_OFF;
- free(*tp);
+ if (trap_ptr == trap)
+ free(*tp);
+ /* else: it "belongs" to trap_ptr vector, don't free */
*tp = NULL;
if ((tp - trap) != 0)
setsignal(tp - trap);
@@ -4602,10 +4604,8 @@ forkchild(struct job *jp, union node *n, int mode)
/* This is needed to prevent EXIT trap firing and such
* (trap_ptr will be freed in trapcmd()) */
trap_ptr = memcpy(xmalloc(sizeof(trap)), trap, sizeof(trap));
- memset(trap, 0, sizeof(trap));
- } else {
- clear_traps();
}
+ clear_traps();
#if JOBS
/* do job control only in root shell */
doing_jobctl = 0;