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| author | Eric W. Biederman <ebiederm@xmission.com> | 2011-11-17 08:20:58 +0100 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-04-08 01:55:54 +0200 |
| commit | d0bd6594e286bd6145e04e19e8d3fa2e902cb800 (patch) | |
| tree | ec512935f5cf2b4ae95927a47e96ad716159fb04 | |
| parent | mqueue: Explicitly capture the user namespace to send the notification to. (diff) | |
| download | linux-d0bd6594e286bd6145e04e19e8d3fa2e902cb800.tar.xz linux-d0bd6594e286bd6145e04e19e8d3fa2e902cb800.zip | |
userns: Deprecate and rename the user_namespace reference in the user_struct
With a user_ns reference in struct cred the only user of the user namespace
reference in struct user_struct is to keep the uid hash table alive.
The user_namespace reference in struct user_struct will be going away soon, and
I have removed all of the references. Rename the field from user_ns to _user_ns
so that the compiler can verify nothing follows the user struct to the user
namespace anymore.
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
| -rw-r--r-- | include/linux/sched.h | 2 | ||||
| -rw-r--r-- | kernel/user.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 720ce8d98a7d..6867ae9bc8a0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -729,7 +729,7 @@ struct user_struct { /* Hash table maintenance information */ struct hlist_node uidhash_node; uid_t uid; - struct user_namespace *user_ns; + struct user_namespace *_user_ns; /* Don't use will be removed soon */ #ifdef CONFIG_PERF_EVENTS atomic_long_t locked_vm; diff --git a/kernel/user.c b/kernel/user.c index 71dd2363ab0f..d65fec0615a0 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -58,7 +58,7 @@ struct user_struct root_user = { .files = ATOMIC_INIT(0), .sigpending = ATOMIC_INIT(0), .locked_shm = 0, - .user_ns = &init_user_ns, + ._user_ns = &init_user_ns, }; /* @@ -72,7 +72,7 @@ static void uid_hash_insert(struct user_struct *up, struct hlist_head *hashent) static void uid_hash_remove(struct user_struct *up) { hlist_del_init(&up->uidhash_node); - put_user_ns(up->user_ns); + put_user_ns(up->_user_ns); /* It is safe to free the uid hash table now */ } static struct user_struct *uid_hash_find(uid_t uid, struct hlist_head *hashent) @@ -153,7 +153,7 @@ struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid) new->uid = uid; atomic_set(&new->__count, 1); - new->user_ns = get_user_ns(ns); + new->_user_ns = get_user_ns(ns); /* * Before adding this, check whether we raced |