projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 0bb80f24 DH |
1 | /* |
| 2 | * procfs namespace bits | |
| 3 | */ | |
| 4 | #ifndef _LINUX_PROC_NS_H | |
| 5 | #define _LINUX_PROC_NS_H | |
| 6 | ||
| e149ed2b AV |
7 | #include <linux/ns_common.h> |
| 8 | ||
| 0bb80f24 DH |
9 | struct pid_namespace; |
| 10 | struct nsproxy; | |
| e149ed2b | 11 | struct path; |
| 0bb80f24 DH |
12 | |
| 13 | struct proc_ns_operations { | |
| 14 | const char *name; | |
| 15 | int type; | |
| 64964528 AV |
16 | struct ns_common *(*get)(struct task_struct *task); |
| 17 | void (*put)(struct ns_common *ns); | |
| 18 | int (*install)(struct nsproxy *nsproxy, struct ns_common *ns); | |
| 0bb80f24 DH |
19 | }; |
| 20 | ||
| 0bb80f24 DH |
21 | extern const struct proc_ns_operations netns_operations; |
| 22 | extern const struct proc_ns_operations utsns_operations; | |
| 23 | extern const struct proc_ns_operations ipcns_operations; | |
| 24 | extern const struct proc_ns_operations pidns_operations; | |
| 25 | extern const struct proc_ns_operations userns_operations; | |
| 26 | extern const struct proc_ns_operations mntns_operations; | |
| 27 | ||
| 28 | /* | |
| 29 | * We always define these enumerators | |
| 30 | */ | |
| 31 | enum { | |
| 32 | PROC_ROOT_INO = 1, | |
| 33 | PROC_IPC_INIT_INO = 0xEFFFFFFFU, | |
| 34 | PROC_UTS_INIT_INO = 0xEFFFFFFEU, | |
| 35 | PROC_USER_INIT_INO = 0xEFFFFFFDU, | |
| 36 | PROC_PID_INIT_INO = 0xEFFFFFFCU, | |
| 37 | }; | |
| 38 | ||
| 39 | #ifdef CONFIG_PROC_FS | |
| 40 | ||
| 41 | extern int pid_ns_prepare_proc(struct pid_namespace *ns); | |
| 42 | extern void pid_ns_release_proc(struct pid_namespace *ns); | |
| 0bb80f24 DH |
43 | extern int proc_alloc_inum(unsigned int *pino); |
| 44 | extern void proc_free_inum(unsigned int inum); | |
| 0bb80f24 DH |
45 | |
| 46 | #else /* CONFIG_PROC_FS */ | |
| 47 | ||
| 48 | static inline int pid_ns_prepare_proc(struct pid_namespace *ns) { return 0; } | |
| 49 | static inline void pid_ns_release_proc(struct pid_namespace *ns) {} | |
| 50 | ||
| 0bb80f24 DH |
51 | static inline int proc_alloc_inum(unsigned int *inum) |
| 52 | { | |
| 53 | *inum = 1; | |
| 54 | return 0; | |
| 55 | } | |
| 56 | static inline void proc_free_inum(unsigned int inum) {} | |
| 0bb80f24 DH |
57 | |
| 58 | #endif /* CONFIG_PROC_FS */ | |
| 59 | ||
| e149ed2b AV |
60 | static inline int ns_alloc_inum(struct ns_common *ns) |
| 61 | { | |
| 62 | atomic_long_set(&ns->stashed, 0); | |
| 63 | return proc_alloc_inum(&ns->inum); | |
| 64 | } | |
| 65 | ||
| 6344c433 AV |
66 | #define ns_free_inum(ns) proc_free_inum((ns)->inum) |
| 67 | ||
| e149ed2b AV |
68 | extern struct file *proc_ns_fget(int fd); |
| 69 | #define get_proc_ns(inode) ((struct ns_common *)(inode)->i_private) | |
| 70 | extern void *ns_get_path(struct path *path, struct task_struct *task, | |
| 71 | const struct proc_ns_operations *ns_ops); | |
| 72 | ||
| 73 | extern int ns_get_name(char *buf, size_t size, struct task_struct *task, | |
| 74 | const struct proc_ns_operations *ns_ops); | |
| 75 | extern void nsfs_init(void); | |
| 76 | ||
| 0bb80f24 | 77 | #endif /* _LINUX_PROC_NS_H */ |