tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/seq_file.h>
9
10struct mnt_namespace {
11 atomic_t count;
12 struct vfsmount * root;
13 struct list_head list;
14 wait_queue_head_t poll;
15 int event;
16};
17
18struct proc_mounts {
19 struct seq_file m; /* must be the first element */
20 struct mnt_namespace *ns;
21 struct path root;
22 int event;
23};
24
25struct fs_struct;
26
27extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
28 struct fs_struct *);
29extern void __put_mnt_ns(struct mnt_namespace *ns);
30
31static inline void put_mnt_ns(struct mnt_namespace *ns)
32{
33 if (atomic_dec_and_lock(&ns->count, &vfsmount_lock))
34 /* releases vfsmount_lock */
35 __put_mnt_ns(ns);
36}
37
38static inline void exit_mnt_ns(struct task_struct *p)
39{
40 struct mnt_namespace *ns = p->nsproxy->mnt_ns;
41 if (ns)
42 put_mnt_ns(ns);
43}
44
45static inline void get_mnt_ns(struct mnt_namespace *ns)
46{
47 atomic_inc(&ns->count);
48}
49
50extern const struct seq_operations mounts_op;
51extern const struct seq_operations mountinfo_op;
52extern const struct seq_operations mountstats_op;
53
54#endif
55#endif