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authorPavel Emelyanov <xemul@openvz.org>2008-02-08 04:18:23 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 09:22:23 -0800
commitaee16ce73c71a241190cef3aaa265f6a3ab8e035 (patch)
treeccfded2678d36af2d4ba9ad106240acf65173b28 /kernel/user.c
parentae5e1b22f17983da929a0d0178896269e19da186 (diff)
downloadvexpress-lsk-aee16ce73c71a241190cef3aaa265f6a3ab8e035.tar.gz
namespaces: cleanup the code managed with the USER_NS option
Make the user_namespace.o compilation depend on this option and move the init_user_ns into user.c file to make the kernel compile and work without the namespaces support. This make the user namespace code be organized similar to other namespaces'. Also mask the USER_NS option as "depend on NAMESPACES". [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Kirill Korotaev <dev@sw.ru> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/user.c')
-rw-r--r--kernel/user.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/user.c b/kernel/user.c
index bc1c48d35cb..7d7900c5a1f 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -17,6 +17,14 @@
#include <linux/module.h>
#include <linux/user_namespace.h>
+struct user_namespace init_user_ns = {
+ .kref = {
+ .refcount = ATOMIC_INIT(2),
+ },
+ .root_user = &root_user,
+};
+EXPORT_SYMBOL_GPL(init_user_ns);
+
/*
* UID task count cache, to get fast user lookup in "alloc_uid"
* when changing user ID's (ie setuid() and friends).
@@ -427,6 +435,7 @@ void switch_uid(struct user_struct *new_user)
suid_keys(current);
}
+#ifdef CONFIG_USER_NS
void release_uids(struct user_namespace *ns)
{
int i;
@@ -451,6 +460,7 @@ void release_uids(struct user_namespace *ns)
free_uid(ns->root_user);
}
+#endif
static int __init uid_cache_init(void)
{