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authorKirill Korotaev <dev@sw.ru>2006-12-08 02:37:56 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:28:51 -0800
commit6b3286ed1169d74fea401367d6d4d6c6ec758a81 (patch)
treefaf5beddb797875bb92855f8606735478267959a /include/linux/mnt_namespace.h
parent1ec320afdc9552c92191d5f89fcd1ebe588334ca (diff)
[PATCH] rename struct namespace to struct mnt_namespace
Rename 'struct namespace' to 'struct mnt_namespace' to avoid confusion with other namespaces being developped for the containers : pid, uts, ipc, etc. 'namespace' variables and attributes are also renamed to 'mnt_ns' Signed-off-by: Kirill Korotaev <dev@sw.ru> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/mnt_namespace.h')
-rw-r--r--include/linux/mnt_namespace.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h
new file mode 100644
index 000000000000..4af0b1fc282a
--- /dev/null
+++ b/include/linux/mnt_namespace.h
@@ -0,0 +1,42 @@
+#ifndef _NAMESPACE_H_
+#define _NAMESPACE_H_
+#ifdef __KERNEL__
+
+#include <linux/mount.h>
+#include <linux/sched.h>
+#include <linux/nsproxy.h>
+
+struct mnt_namespace {
+ atomic_t count;
+ struct vfsmount * root;
+ struct list_head list;
+ wait_queue_head_t poll;
+ int event;
+};
+
+extern int copy_mnt_ns(int, struct task_struct *);
+extern void __put_mnt_ns(struct mnt_namespace *ns);
+extern struct mnt_namespace *dup_mnt_ns(struct task_struct *,
+ struct fs_struct *);
+
+static inline void put_mnt_ns(struct mnt_namespace *ns)
+{
+ if (atomic_dec_and_lock(&ns->count, &vfsmount_lock))
+ /* releases vfsmount_lock */
+ __put_mnt_ns(ns);
+}
+
+static inline void exit_mnt_ns(struct task_struct *p)
+{
+ struct mnt_namespace *ns = p->nsproxy->mnt_ns;
+ if (ns)
+ put_mnt_ns(ns);
+}
+
+static inline void get_mnt_ns(struct mnt_namespace *ns)
+{
+ atomic_inc(&ns->count);
+}
+
+#endif
+#endif