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#include <linux/nsproxy.h>
8
9struct mnt_namespace {
10 atomic_t count;
11 struct vfsmount * root;
12 struct list_head list;
13 wait_queue_head_t poll;
14 int event;
15};
16
17extern int copy_mnt_ns(int, struct task_struct *);
18extern void __put_mnt_ns(struct mnt_namespace *ns);
19extern struct mnt_namespace *dup_mnt_ns(struct task_struct *,
20 struct fs_struct *);
21
22static inline void put_mnt_ns(struct mnt_namespace *ns)
23{
24 if (atomic_dec_and_lock(&ns->count, &vfsmount_lock))
25 /* releases vfsmount_lock */
26 __put_mnt_ns(ns);
27}
28
29static inline void exit_mnt_ns(struct task_struct *p)
30{
31 struct mnt_namespace *ns = p->nsproxy->mnt_ns;
32 if (ns)
33 put_mnt_ns(ns);
34}
35
36static inline void get_mnt_ns(struct mnt_namespace *ns)
37{
38 atomic_inc(&ns->count);
39}
40
41#endif
42#endif