[CRIU] [PATCH 7/8] cgroup: print errors for umount and rmdir

[Andrei Vagin]

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From: Andrei Vagin <avagin at virtuozzo.com>

CID 155804 (#1 of 1): Unchecked return value (CHECKED_RETURN)
2. check_return: Calling umount2 without checking return value (as is done elsewhere 8 out of 9 times).

Signed-off-by: Andrei Vagin <avagin at virtuozzo.com>
---
 criu/cgroup.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/criu/cgroup.c b/criu/cgroup.c
index ac15da264..8df6a3b83 100644
--- a/criu/cgroup.c
+++ b/criu/cgroup.c
@@ -1163,8 +1163,10 @@ void fini_cgroup(void)
                return;

        close_service_fd(CGROUP_YARD);
-       umount2(cg_yard, MNT_DETACH);
-       rmdir(cg_yard);
+       if (umount2(cg_yard, MNT_DETACH))
+               pr_perror("Unable to umount %s", cg_yard);
+       if (rmdir(cg_yard))
+               pr_perror("Unable to remove %s", cg_yard);
        xfree(cg_yard);
        cg_yard = NULL;
 }
--
2.13.6