From: Yang Xu <xuyang2018.jy@fujitsu.com>
Date: Thu, 4 Aug 2022 06:18:52 +0000 (+0800)
Subject: src/t_ofd_locks.c: Reset errno to zero
X-Git-Tag: v2022.08.21^0
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=bf1ef26900eec3b028c1b0f55f65b3b233e47c56;p=xfstests-dev.git

src/t_ofd_locks.c: Reset errno to zero

It seems I met libcap errno bug again when using libcap-2.48-4.el8.x86_64.
But this time, errno is EINVAL if c program link with lcap.
Lastest upstream libcap doesn't have bug and it should be backport bug.

generic/478 will become not run because of this. To fix this that only
exists on some distributions, reset errno to zero.

Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>
---

diff --git a/src/t_ofd_locks.c b/src/t_ofd_locks.c
index e3b15ddc..e77f2659 100644
--- a/src/t_ofd_locks.c
+++ b/src/t_ofd_locks.c
@@ -187,6 +187,8 @@ int main(int argc, char **argv)
 	struct sembuf sop;
 	int opt, ret, retry;
 
+	//avoid libcap errno bug
+	errno = 0;
 	while((opt = getopt(argc, argv, "sgrwo:l:PRWtFd")) != -1) {
 		switch(opt) {
 		case 's':