android_kernel_xiaomi_sm8350/include/linux/namespace.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

43 lines
855 B
C

#ifndef _NAMESPACE_H_
#define _NAMESPACE_H_
#ifdef __KERNEL__
#include <linux/mount.h>
#include <linux/sched.h>
struct namespace {
atomic_t count;
struct vfsmount * root;
struct list_head list;
struct rw_semaphore sem;
};
extern void umount_tree(struct vfsmount *);
extern int copy_namespace(int, struct task_struct *);
extern void __put_namespace(struct namespace *namespace);
static inline void put_namespace(struct namespace *namespace)
{
if (atomic_dec_and_test(&namespace->count))
__put_namespace(namespace);
}
static inline void exit_namespace(struct task_struct *p)
{
struct namespace *namespace = p->namespace;
if (namespace) {
task_lock(p);
p->namespace = NULL;
task_unlock(p);
put_namespace(namespace);
}
}
static inline void get_namespace(struct namespace *namespace)
{
atomic_inc(&namespace->count);
}
#endif
#endif