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; | |
021ada7d | 31 | struct dentry *proc_self; |
07543f5c | 32 | #endif |
20fad13a PE |
33 | #ifdef CONFIG_BSD_PROCESS_ACCT |
34 | struct bsd_acct_struct *bacct; | |
35 | #endif | |
49f4d8b9 | 36 | struct user_namespace *user_ns; |
0a01f2cc | 37 | struct work_struct proc_work; |
dcb0f222 | 38 | kgid_t pid_gid; |
0499680a | 39 | int hide_pid; |
cf3f8921 | 40 | int reboot; /* group exit code if this pidns was rebooted */ |
98f842e6 | 41 | unsigned int proc_inum; |
3fbc9648 SB |
42 | }; |
43 | ||
61a58c6c | 44 | extern struct pid_namespace init_pid_ns; |
3fbc9648 | 45 | |
c876ad76 EB |
46 | #define PIDNS_HASH_ADDING (1U << 31) |
47 | ||
57d5f66b | 48 | #ifdef CONFIG_PID_NS |
a05f7b15 | 49 | static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) |
9a575a92 | 50 | { |
b461cc03 PE |
51 | if (ns != &init_pid_ns) |
52 | kref_get(&ns->kref); | |
a05f7b15 | 53 | return ns; |
9a575a92 CLG |
54 | } |
55 | ||
49f4d8b9 EB |
56 | extern struct pid_namespace *copy_pid_ns(unsigned long flags, |
57 | struct user_namespace *user_ns, struct pid_namespace *ns); | |
74bd59bb | 58 | extern void zap_pid_ns_processes(struct pid_namespace *pid_ns); |
cf3f8921 | 59 | extern int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd); |
bbc2e3ef | 60 | extern void put_pid_ns(struct pid_namespace *ns); |
9a575a92 | 61 | |
57d5f66b EB |
62 | #else /* !CONFIG_PID_NS */ |
63 | #include <linux/err.h> | |
64 | ||
65 | static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) | |
66 | { | |
67 | return ns; | |
68 | } | |
69 | ||
49f4d8b9 EB |
70 | static inline struct pid_namespace *copy_pid_ns(unsigned long flags, |
71 | struct user_namespace *user_ns, struct pid_namespace *ns) | |
57d5f66b EB |
72 | { |
73 | if (flags & CLONE_NEWPID) | |
74 | ns = ERR_PTR(-EINVAL); | |
75 | return ns; | |
76 | } | |
77 | ||
78 | static inline void put_pid_ns(struct pid_namespace *ns) | |
79 | { | |
80 | } | |
81 | ||
74bd59bb PE |
82 | static inline void zap_pid_ns_processes(struct pid_namespace *ns) |
83 | { | |
84 | BUG(); | |
85 | } | |
cf3f8921 DL |
86 | |
87 | static inline int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd) | |
88 | { | |
89 | return 0; | |
90 | } | |
57d5f66b EB |
91 | #endif /* CONFIG_PID_NS */ |
92 | ||
61bce0f1 | 93 | extern struct pid_namespace *task_active_pid_ns(struct task_struct *tsk); |
3ae4eed3 AB |
94 | void pidhash_init(void); |
95 | void pidmap_init(void); | |
96 | ||
61a58c6c | 97 | #endif /* _LINUX_PID_NS_H */ |