projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 61a58c6c SB |
1 | #ifndef _LINUX_PID_NS_H |
| 2 | #define _LINUX_PID_NS_H | |
| aa5a6662 SB |
3 | |
| 4 | #include <linux/sched.h> | |
| 5 | #include <linux/mm.h> | |
| 6 | #include <linux/threads.h> | |
| 7 | #include <linux/pid.h> | |
| 9a575a92 CLG |
8 | #include <linux/nsproxy.h> |
| 9 | #include <linux/kref.h> | |
| aa5a6662 SB |
10 | |
| 11 | struct pidmap { | |
| 12 | atomic_t nr_free; | |
| 13 | void *page; | |
| 14 | }; | |
| 15 | ||
| 16 | #define PIDMAP_ENTRIES ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8) | |
| 17 | ||
| 61a58c6c | 18 | struct pid_namespace { |
| 9a575a92 CLG |
19 | struct kref kref; |
| 20 | struct pidmap pidmap[PIDMAP_ENTRIES]; | |
| 21 | int last_pid; | |
| 84d73786 | 22 | struct task_struct *child_reaper; |
| 3fbc9648 SB |
23 | }; |
| 24 | ||
| 61a58c6c | 25 | extern struct pid_namespace init_pid_ns; |
| 3fbc9648 | 26 | |
| 9a575a92 CLG |
27 | static inline void get_pid_ns(struct pid_namespace *ns) |
| 28 | { | |
| 29 | kref_get(&ns->kref); | |
| 30 | } | |
| 31 | ||
| e3222c4e | 32 | extern struct pid_namespace *copy_pid_ns(int flags, struct pid_namespace *ns); |
| 9a575a92 CLG |
33 | extern void free_pid_ns(struct kref *kref); |
| 34 | ||
| 35 | static inline void put_pid_ns(struct pid_namespace *ns) | |
| 36 | { | |
| 37 | kref_put(&ns->kref, free_pid_ns); | |
| 38 | } | |
| 39 | ||
| 84d73786 SB |
40 | static inline struct task_struct *child_reaper(struct task_struct *tsk) |
| 41 | { | |
| 0f245285 | 42 | return init_pid_ns.child_reaper; |
| 84d73786 SB |
43 | } |
| 44 | ||
| 61a58c6c | 45 | #endif /* _LINUX_PID_NS_H */ |