Commit | Line | Data |
---|---|---|
0bb80f24 DH |
1 | /* |
2 | * procfs namespace bits | |
3 | */ | |
4 | #ifndef _LINUX_PROC_NS_H | |
5 | #define _LINUX_PROC_NS_H | |
6 | ||
7 | struct pid_namespace; | |
8 | struct nsproxy; | |
9 | ||
10 | struct proc_ns_operations { | |
11 | const char *name; | |
12 | int type; | |
13 | void *(*get)(struct task_struct *task); | |
14 | void (*put)(void *ns); | |
15 | int (*install)(struct nsproxy *nsproxy, void *ns); | |
16 | unsigned int (*inum)(void *ns); | |
17 | }; | |
18 | ||
19 | struct proc_ns { | |
20 | void *ns; | |
21 | const struct proc_ns_operations *ns_ops; | |
22 | }; | |
23 | ||
24 | extern const struct proc_ns_operations netns_operations; | |
25 | extern const struct proc_ns_operations utsns_operations; | |
26 | extern const struct proc_ns_operations ipcns_operations; | |
27 | extern const struct proc_ns_operations pidns_operations; | |
28 | extern const struct proc_ns_operations userns_operations; | |
29 | extern const struct proc_ns_operations mntns_operations; | |
30 | ||
31 | /* | |
32 | * We always define these enumerators | |
33 | */ | |
34 | enum { | |
35 | PROC_ROOT_INO = 1, | |
36 | PROC_IPC_INIT_INO = 0xEFFFFFFFU, | |
37 | PROC_UTS_INIT_INO = 0xEFFFFFFEU, | |
38 | PROC_USER_INIT_INO = 0xEFFFFFFDU, | |
39 | PROC_PID_INIT_INO = 0xEFFFFFFCU, | |
40 | }; | |
41 | ||
42 | #ifdef CONFIG_PROC_FS | |
43 | ||
44 | extern int pid_ns_prepare_proc(struct pid_namespace *ns); | |
45 | extern void pid_ns_release_proc(struct pid_namespace *ns); | |
46 | extern struct file *proc_ns_fget(int fd); | |
47 | extern struct proc_ns *get_proc_ns(struct inode *); | |
48 | extern int proc_alloc_inum(unsigned int *pino); | |
49 | extern void proc_free_inum(unsigned int inum); | |
50 | extern bool proc_ns_inode(struct inode *inode); | |
51 | ||
52 | #else /* CONFIG_PROC_FS */ | |
53 | ||
54 | static inline int pid_ns_prepare_proc(struct pid_namespace *ns) { return 0; } | |
55 | static inline void pid_ns_release_proc(struct pid_namespace *ns) {} | |
56 | ||
57 | static inline struct file *proc_ns_fget(int fd) | |
58 | { | |
59 | return ERR_PTR(-EINVAL); | |
60 | } | |
61 | ||
62 | static inline struct proc_ns *get_proc_ns(struct inode *inode) { return NULL; } | |
63 | ||
64 | static inline int proc_alloc_inum(unsigned int *inum) | |
65 | { | |
66 | *inum = 1; | |
67 | return 0; | |
68 | } | |
69 | static inline void proc_free_inum(unsigned int inum) {} | |
70 | static inline bool proc_ns_inode(struct inode *inode) { return false; } | |
71 | ||
72 | #endif /* CONFIG_PROC_FS */ | |
73 | ||
74 | #endif /* _LINUX_PROC_NS_H */ |