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 int copy_namespace(int, struct task_struct *);
16extern void __put_namespace(struct namespace *namespace);
17
18static inline void put_namespace(struct namespace *namespace)
19{
20 if (atomic_dec_and_test(&namespace->count))
21 __put_namespace(namespace);
22}
23
24static inline void exit_namespace(struct task_struct *p)
25{
26 struct namespace *namespace = p->namespace;
27 if (namespace) {
28 task_lock(p);
29 p->namespace = NULL;
30 task_unlock(p);
31 put_namespace(namespace);
32 }
33}
34
35static inline void get_namespace(struct namespace *namespace)
36{
37 atomic_inc(&namespace->count);
38}
39
40#endif
41#endif