Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _NAMESPACE_H_
2#define _NAMESPACE_H_
3#ifdef __KERNEL__
4
5#include <linux/mount.h>
6#include <linux/sched.h>
7
8struct namespace {
9 atomic_t count;
10 struct vfsmount * root;
11 struct list_head list;
12 struct rw_semaphore sem;
13};
14
15extern void umount_tree(struct vfsmount *);
16extern int copy_namespace(int, struct task_struct *);
17extern void __put_namespace(struct namespace *namespace);
18
19static inline void put_namespace(struct namespace *namespace)
20{
21 if (atomic_dec_and_test(&namespace->count))
22 __put_namespace(namespace);
23}
24
25static inline void exit_namespace(struct task_struct *p)
26{
27 struct namespace *namespace = p->namespace;
28 if (namespace) {
29 task_lock(p);
30 p->namespace = NULL;
31 task_unlock(p);
32 put_namespace(namespace);
33 }
34}
35
36static inline void get_namespace(struct namespace *namespace)
37{
38 atomic_inc(&namespace->count);
39}
40
41#endif
42#endif