tests: added cleanup for lock files

Problem: useradd fails with: Cannot allocate memory
         useradd: cannot lock /etc/passwd; try again later.

Solution:

Lock files should get automatically removed once "usradd" or "groupadd"
command finishes. But sometimes we encounter situations (bugs) where
some of these files may not get properly unlocked after the execution of
the command. In that case, when we execute useradd next time, it may show
the error “cannot lock /etc/password” or “unable to lock group file”.
So, to avoid any such errors, check for any lock files under /etc and
remove those.

updates: bz#1193929

Change-Id: If6456a271c2bc0717f768d7101a40ce44a9af3d7
Signed-off-by: Sunny Kumar <sunkumar@redhat.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/include.rc b/tests/include.rc
index af78172fee2..ebe94b3fd11 100644
--- a/tests/include.rc
+++ b/tests/include.rc
@@ -552,6 +552,38 @@ function process_pids() {
         echo "${pids[@]}"
 }
 
+## Lock files should get automatically removed once "usradd" or "groupadd"
+## command finishes. But sometimes we encounter situations (bugs) where
+## some of these files may not get properly unlocked after the execution of
+## the command. In that case, when we execute useradd next time, it may show
+## the error “cannot lock /etc/password” or “unable to lock group file”.
+## So, to avoid any such errors, check for any lock files under /etc.
+## and remove those.
+
+function remove_lock_files()
+{
+        if [ ! -f /etc/passwd.lock ];
+        then
+                rm -rf /etc/passwd.lock;
+        fi
+
+        if [ ! -f /etc/group.lock ];
+        then
+                rm -rf /etc/group.lock;
+        fi
+
+        if [ ! -f /etc/shadow.lock ];
+        then
+                rm -rf /etc/shadow.lock;
+        fi
+
+        if [ ! -f /etc/gshadow.lock ];
+        then
+                rm -rf /etc/gshadow.lock;
+        fi
+}
+
+
 function cleanup()
 {
         local end_time
@@ -572,6 +604,9 @@ function cleanup()
                 ;;
         esac
 
+        # Clean up lock files.
+        remove_lock_files
+
         # Clean up all client mounts
         for m in `mount | grep fuse.glusterfs | awk '{print $3}'`; do
                 umount $flag $m