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> | |
| 187f1882 | 5 | #include <linux/bug.h> |
| aa5a6662 SB |
6 | #include <linux/mm.h> |
| 7 | #include <linux/threads.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 | ||
| 20fad13a PE |
18 | struct bsd_acct_struct; |
| 19 | ||
| 61a58c6c | 20 | struct pid_namespace { |
| 9a575a92 CLG |
21 | struct kref kref; |
| 22 | struct pidmap pidmap[PIDMAP_ENTRIES]; | |
| 23 | int last_pid; | |
| 84d73786 | 24 | struct task_struct *child_reaper; |
| baf8f0f8 | 25 | struct kmem_cache *pid_cachep; |
| caafa432 | 26 | unsigned int level; |
| faacbfd3 | 27 | struct pid_namespace *parent; |
| 07543f5c PE |
28 | #ifdef CONFIG_PROC_FS |
| 29 | struct vfsmount *proc_mnt; | |
| 30 | #endif | |
| 20fad13a PE |
31 | #ifdef CONFIG_BSD_PROCESS_ACCT |
| 32 | struct bsd_acct_struct *bacct; | |
| 33 | #endif | |
| dcb0f222 | 34 | kgid_t pid_gid; |
| 0499680a | 35 | int hide_pid; |
| cf3f8921 | 36 | int reboot; /* group exit code if this pidns was rebooted */ |
| 3fbc9648 SB |
37 | }; |
| 38 | ||
| 61a58c6c | 39 | extern struct pid_namespace init_pid_ns; |
| 3fbc9648 | 40 | |
| 57d5f66b | 41 | #ifdef CONFIG_PID_NS |
| a05f7b15 | 42 | static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) |
| 9a575a92 | 43 | { |
| b461cc03 PE |
44 | if (ns != &init_pid_ns) |
| 45 | kref_get(&ns->kref); | |
| a05f7b15 | 46 | return ns; |
| 9a575a92 CLG |
47 | } |
| 48 | ||
| 213dd266 | 49 | extern struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *ns); |
| 9a575a92 | 50 | extern void free_pid_ns(struct kref *kref); |
| 74bd59bb | 51 | extern void zap_pid_ns_processes(struct pid_namespace *pid_ns); |
| cf3f8921 | 52 | extern int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd); |
| 9a575a92 CLG |
53 | |
| 54 | static inline void put_pid_ns(struct pid_namespace *ns) | |
| 55 | { | |
| b461cc03 PE |
56 | if (ns != &init_pid_ns) |
| 57 | kref_put(&ns->kref, free_pid_ns); | |
| 9a575a92 CLG |
58 | } |
| 59 | ||
| 57d5f66b EB |
60 | #else /* !CONFIG_PID_NS */ |
| 61 | #include <linux/err.h> | |
| 62 | ||
| 63 | static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) | |
| 64 | { | |
| 65 | return ns; | |
| 66 | } | |
| 67 | ||
| 68 | static inline struct pid_namespace * | |
| 69 | copy_pid_ns(unsigned long flags, struct pid_namespace *ns) | |
| 70 | { | |
| 71 | if (flags & CLONE_NEWPID) | |
| 72 | ns = ERR_PTR(-EINVAL); | |
| 73 | return ns; | |
| 74 | } | |
| 75 | ||
| 76 | static inline void put_pid_ns(struct pid_namespace *ns) | |
| 77 | { | |
| 78 | } | |
| 79 | ||
| 74bd59bb PE |
80 | static inline void zap_pid_ns_processes(struct pid_namespace *ns) |
| 81 | { | |
| 82 | BUG(); | |
| 83 | } | |
| cf3f8921 DL |
84 | |
| 85 | static inline int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd) | |
| 86 | { | |
| 87 | return 0; | |
| 88 | } | |
| 57d5f66b EB |
89 | #endif /* CONFIG_PID_NS */ |
| 90 | ||
| 61bce0f1 | 91 | extern struct pid_namespace *task_active_pid_ns(struct task_struct *tsk); |
| 3ae4eed3 AB |
92 | void pidhash_init(void); |
| 93 | void pidmap_init(void); | |
| 94 | ||
| 61a58c6c | 95 | #endif /* _LINUX_PID_NS_H */ |