* [COMMITTED 2.32] linux: Fix mq_timereceive check for 32 bit fallback code (BZ 29304)
@ 2022-06-30 13:57 Adhemerval Zanella
0 siblings, 0 replies; only message in thread
From: Adhemerval Zanella @ 2022-06-30 13:57 UTC (permalink / raw)
To: libc-stable
On success, mq_receive() and mq_timedreceive() return the number of
bytes in the received message, so it requires to check if the value
is larger than 0.
Checked on i686-linux-gnu.
(cherry picked from commit 71d87d85bf54f6522813aec97c19bdd24997341e)
---
sysdeps/unix/sysv/linux/mq_timedreceive.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sysdeps/unix/sysv/linux/mq_timedreceive.c b/sysdeps/unix/sysv/linux/mq_timedreceive.c
index 728a63d1ec..fda57be19d 100644
--- a/sysdeps/unix/sysv/linux/mq_timedreceive.c
+++ b/sysdeps/unix/sysv/linux/mq_timedreceive.c
@@ -35,7 +35,7 @@ __mq_timedreceive_time64 (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
#else
int ret = SYSCALL_CANCEL (mq_timedreceive_time64, mqdes, msg_ptr, msg_len,
msg_prio, abs_timeout);
- if (ret == 0 || errno != ENOSYS)
+ if (ret >= 0 || errno != ENOSYS)
return ret;
struct timespec ts32;
--
2.34.1
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