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authorEric W. Biederman <ebiederm@xmission.com>2011-11-17 01:32:59 -0800
committerEric W. Biederman <ebiederm@xmission.com>2012-04-26 02:00:59 -0700
commit783291e6900292521a3895583785e0c04a56c5b3 (patch)
tree9dd368a25ea61b5913646b1d93ec99e865c058ba /include/linux/user_namespace.h
parent7b44ab978b77a91b327058a0f4db7e6fcdb90b92 (diff)
userns: Simplify the user_namespace by making userns->creator a kuid.
- Transform userns->creator from a user_struct reference to a simple kuid_t, kgid_t pair. In cap_capable this allows the check to see if we are the creator of a namespace to become the classic suser style euid permission check. This allows us to remove the need for a struct cred in the mapping functions and still be able to dispaly the user namespace creators uid and gid as 0. - Remove the now unnecessary delayed_work in free_user_ns. All that is left for free_user_ns to do is to call kmem_cache_free and put_user_ns. Those functions can be called in any context so call them directly from free_user_ns removing the need for delayed work. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/user_namespace.h')
-rw-r--r--include/linux/user_namespace.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
index d767508db4f9..8a391bd53de2 100644
--- a/include/linux/user_namespace.h
+++ b/include/linux/user_namespace.h
@@ -9,8 +9,8 @@
struct user_namespace {
struct kref kref;
struct user_namespace *parent;
- struct user_struct *creator;
- struct work_struct destroyer;
+ kuid_t owner;
+ kgid_t group;
};
extern struct user_namespace init_user_ns;