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namespaces: cleanup the code managed with the USER_NS option

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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>
This commit is contained in:
Pavel Emelyanov 2008-02-08 04:18:23 -08:00 • committed by Linus Torvalds
parent ae5e1b22f1
commit aee16ce73c
4 changed files with 21 additions and 24 deletions
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13
kernel/user_namespace.c
View file

@ -10,17 +10,6 @@
#include <linux/nsproxy.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);
#ifdef CONFIG_USER_NS
/*
* Clone a new ns copying an original user ns, setting refcount to 1
* @old_ns: namespace to clone
@ -84,5 +73,3 @@ void free_user_ns(struct kref *kref)
release_uids(ns);
kfree(ns);
}
#endif /* CONFIG_USER_NS */