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Message-ID: <20241030030724.733422-1-lihua.zhao.cn@windriver.com>
Date: Wed, 30 Oct 2024 11:07:24 +0800
From: <lihua.zhao.cn@...driver.com>
To: <musl@...ts.openwall.com>
CC: <lihua.zhao.cn@...driver.com>
Subject: [PATCH v2] signal: set EINVAL for sigismember when sig is invalid
From: Lihua Zhao <lihua.zhao.cn@...driver.com>
sigismember() forget to set errno when input sig is invalid
---
src/signal/sigismember.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/signal/sigismember.c b/src/signal/sigismember.c
index ab87d622..3ecd300f 100644
--- a/src/signal/sigismember.c
+++ b/src/signal/sigismember.c
@@ -1,8 +1,12 @@
#include <signal.h>
+#include <errno.h>
int sigismember(const sigset_t *set, int sig)
{
- unsigned s = sig-1;
- if (s >= _NSIG-1) return 0;
+ unsigned s = sig-1U;
+ if (s >= _NSIG-1) {
+ errno = EINVAL;
+ return -1;
+ }
return !!(set->__bits[s/8/sizeof *set->__bits] & 1UL<<(s&8*sizeof *set->__bits-1));
}
--
2.34.1
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