If we unshare pidns without unsharing mounts namespace, and then do
a mount -t proc none /proc, then the new proc sits over the original
proc for the whole system.
Since pidns03 wasn't using CLONE_NEWNS, when it exited /proc showed
zero tasks. This can be fixed by doing 'umount -l /proc', but
'umount /proc' is insufficient. More to the point, pidns03 wasn't
trying to clean up /proc at all. So make it use CLONE_NEWNS so
its private procfs will be automatically cleaned up.
Signed-off-by: Serge E. Hallyn <[EMAIL PROTECTED]>
---
pidns03.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -Nrup ltp-full-20080930/testcases/kernel/containers/pidns/pidns03.c
ltp-full-20080930.patched/testcases/kernel/containers/pidns/pidns03.c
--- ltp-full-20080930/testcases/kernel/containers/pidns/pidns03.c
2008-09-30 07:36:38.000000000 -0500
+++ ltp-full-20080930.patched/testcases/kernel/containers/pidns/pidns03.c
2008-10-03 15:52:37.000000000 -0500
@@ -80,7 +80,7 @@ char **argv;
ppid = getpid();
/* Create a Container and execute to test the functionality */
- ret = do_clone_unshare_test(T_CLONE, CLONE_NEWPID, child_fn, ppid);
+ ret = do_clone_unshare_test(T_CLONE, CLONE_NEWPID|CLONE_NEWNS,
child_fn, ppid);
/* check return code */
if (ret == -1) {
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