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make proc_ns_operations work with struct ns_common * instead of void *

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We can do that now.  And kill ->inum(), while we are at it - all instances
are identical.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-11-01 00:37:32 -04:00
parent 3c04118461
commit 64964528b2
9 changed files with 28 additions and 65 deletions
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12
kernel/user_namespace.c
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@ -846,7 +846,7 @@ static inline struct user_namespace *to_user_ns(struct ns_common *ns)
return container_of(ns, struct user_namespace, ns);
}
static void *userns_get(struct task_struct *task)
static struct ns_common *userns_get(struct task_struct *task)
{
struct user_namespace *user_ns;
@ -857,12 +857,12 @@ static void *userns_get(struct task_struct *task)
return user_ns ? &user_ns->ns : NULL;
}
static void userns_put(void *ns)
static void userns_put(struct ns_common *ns)
{
put_user_ns(to_user_ns(ns));
}
static int userns_install(struct nsproxy *nsproxy, void *ns)
static int userns_install(struct nsproxy *nsproxy, struct ns_common *ns)
{
struct user_namespace *user_ns = to_user_ns(ns);
struct cred *cred;
@ -893,18 +893,12 @@ static int userns_install(struct nsproxy *nsproxy, void *ns)
return commit_creds(cred);
}
static unsigned int userns_inum(void *ns)
{
return ((struct ns_common *)ns)->inum;
}
const struct proc_ns_operations userns_operations = {
.name = "user",
.type = CLONE_NEWUSER,
.get = userns_get,
.put = userns_put,
.install = userns_install,
.inum = userns_inum,
};
static __init int user_namespaces_init(void)