projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6b3286ed KK |
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> | |
| a1a2c409 | 8 | #include <linux/seq_file.h> |
| 6b3286ed KK |
9 | |
| 10 | struct 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 | ||
| a1a2c409 MS |
18 | struct 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 | ||
| 213dd266 | 25 | extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *, |
| 6b3286ed | 26 | struct fs_struct *); |
| e3222c4e | 27 | extern void __put_mnt_ns(struct mnt_namespace *ns); |
| 6b3286ed KK |
28 | |
| 29 | static inline void put_mnt_ns(struct mnt_namespace *ns) | |
| 30 | { | |
| 31 | if (atomic_dec_and_lock(&ns->count, &vfsmount_lock)) | |
| 32 | /* releases vfsmount_lock */ | |
| 33 | __put_mnt_ns(ns); | |
| 34 | } | |
| 35 | ||
| 36 | static inline void exit_mnt_ns(struct task_struct *p) | |
| 37 | { | |
| 38 | struct mnt_namespace *ns = p->nsproxy->mnt_ns; | |
| 39 | if (ns) | |
| 40 | put_mnt_ns(ns); | |
| 41 | } | |
| 42 | ||
| 43 | static inline void get_mnt_ns(struct mnt_namespace *ns) | |
| 44 | { | |
| 45 | atomic_inc(&ns->count); | |
| 46 | } | |
| 47 | ||
| a1a2c409 | 48 | extern const struct seq_operations mounts_op; |
| 2d4d4864 | 49 | extern const struct seq_operations mountinfo_op; |
| a1a2c409 MS |
50 | extern const struct seq_operations mountstats_op; |
| 51 | ||
| 6b3286ed KK |
52 | #endif |
| 53 | #endif |