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; | |
| c876ad76 | 24 | unsigned int nr_hashed; |
| 84d73786 | 25 | struct task_struct *child_reaper; |
| baf8f0f8 | 26 | struct kmem_cache *pid_cachep; |
| caafa432 | 27 | unsigned int level; |
| faacbfd3 | 28 | struct pid_namespace *parent; |
| 07543f5c PE |
29 | #ifdef CONFIG_PROC_FS |
| 30 | struct vfsmount *proc_mnt; | |
| 31 | #endif | |
| 20fad13a PE |
32 | #ifdef CONFIG_BSD_PROCESS_ACCT |
| 33 | struct bsd_acct_struct *bacct; | |
| 34 | #endif | |
| 49f4d8b9 | 35 | struct user_namespace *user_ns; |
| 0a01f2cc | 36 | struct work_struct proc_work; |
| dcb0f222 | 37 | kgid_t pid_gid; |
| 0499680a | 38 | int hide_pid; |
| cf3f8921 | 39 | int reboot; /* group exit code if this pidns was rebooted */ |
| 98f842e6 | 40 | unsigned int proc_inum; |
| 3fbc9648 SB |
41 | }; |
| 42 | ||
| 61a58c6c | 43 | extern struct pid_namespace init_pid_ns; |
| 3fbc9648 | 44 | |
| c876ad76 EB |
45 | #define PIDNS_HASH_ADDING (1U << 31) |
| 46 | ||
| 57d5f66b | 47 | #ifdef CONFIG_PID_NS |
| a05f7b15 | 48 | static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) |
| 9a575a92 | 49 | { |
| b461cc03 PE |
50 | if (ns != &init_pid_ns) |
| 51 | kref_get(&ns->kref); | |
| a05f7b15 | 52 | return ns; |
| 9a575a92 CLG |
53 | } |
| 54 | ||
| 49f4d8b9 EB |
55 | extern struct pid_namespace *copy_pid_ns(unsigned long flags, |
| 56 | struct user_namespace *user_ns, struct pid_namespace *ns); | |
| 74bd59bb | 57 | extern void zap_pid_ns_processes(struct pid_namespace *pid_ns); |
| cf3f8921 | 58 | extern int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd); |
| bbc2e3ef | 59 | extern void put_pid_ns(struct pid_namespace *ns); |
| 9a575a92 | 60 | |
| 57d5f66b EB |
61 | #else /* !CONFIG_PID_NS */ |
| 62 | #include <linux/err.h> | |
| 63 | ||
| 64 | static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) | |
| 65 | { | |
| 66 | return ns; | |
| 67 | } | |
| 68 | ||
| 49f4d8b9 EB |
69 | static inline struct pid_namespace *copy_pid_ns(unsigned long flags, |
| 70 | struct user_namespace *user_ns, struct pid_namespace *ns) | |
| 57d5f66b EB |
71 | { |
| 72 | if (flags & CLONE_NEWPID) | |
| 73 | ns = ERR_PTR(-EINVAL); | |
| 74 | return ns; | |
| 75 | } | |
| 76 | ||
| 77 | static inline void put_pid_ns(struct pid_namespace *ns) | |
| 78 | { | |
| 79 | } | |
| 80 | ||
| 74bd59bb PE |
81 | static inline void zap_pid_ns_processes(struct pid_namespace *ns) |
| 82 | { | |
| 83 | BUG(); | |
| 84 | } | |
| cf3f8921 DL |
85 | |
| 86 | static inline int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd) | |
| 87 | { | |
| 88 | return 0; | |
| 89 | } | |
| 57d5f66b EB |
90 | #endif /* CONFIG_PID_NS */ |
| 91 | ||
| 61bce0f1 | 92 | extern struct pid_namespace *task_active_pid_ns(struct task_struct *tsk); |
| 3ae4eed3 AB |
93 | void pidhash_init(void); |
| 94 | void pidmap_init(void); | |
| 95 | ||
| 61a58c6c | 96 | #endif /* _LINUX_PID_NS_H */ |