diff options
| author | Yang Xu <xuyang2018.jy@fujitsu.com> | 2022-05-08 00:01:25 +0800 |
|---|---|---|
| committer | Zorro Lang <zlang@kernel.org> | 2022-05-07 23:08:34 +0800 |
| commit | 6ac390bb605b70ef9d12eff9742379e13cfe0cd6 (patch) | |
| tree | 52330d18047b7782d9ca43746a237ce287446d82 /src | |
| parent | 9ae10c882550c48868e7c0baff889bb1a7c7c8e9 (diff) | |
idmapped-mounts: Reset errno to zero before run_test
If we run case on old kernel that doesn't support mount_setattr and
then fail on our own function before call is_setgid/is_setuid function
to reset errno, run_test will print "Function not implement" error.
We also check whether system support user namespace, so reset errno to
zero after userns check.
Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/idmapped-mounts/idmapped-mounts.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/idmapped-mounts/idmapped-mounts.c b/src/idmapped-mounts/idmapped-mounts.c index ce3f73be..2e94bf71 100644 --- a/src/idmapped-mounts/idmapped-mounts.c +++ b/src/idmapped-mounts/idmapped-mounts.c @@ -14232,6 +14232,8 @@ int main(int argc, char *argv[]) exit(EXIT_SUCCESS); } t_has_userns = sys_has_userns(); + /* don't copy ENOSYS errno to child process on older kernel */ + errno = 0; stash_overflowuid(); stash_overflowgid(); |