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 | ||
| 7 | struct pid_namespace; | |
| 8 | struct nsproxy; | |
| 64964528 | 9 | struct ns_common; |
| 0bb80f24 DH |
10 | |
| 11 | struct proc_ns_operations { | |
| 12 | const char *name; | |
| 13 | int type; | |
| 64964528 AV |
14 | struct ns_common *(*get)(struct task_struct *task); |
| 15 | void (*put)(struct ns_common *ns); | |
| 16 | int (*install)(struct nsproxy *nsproxy, struct ns_common *ns); | |
| 0bb80f24 DH |
17 | }; |
| 18 | ||
| 0bb80f24 DH |
19 | extern const struct proc_ns_operations netns_operations; |
| 20 | extern const struct proc_ns_operations utsns_operations; | |
| 21 | extern const struct proc_ns_operations ipcns_operations; | |
| 22 | extern const struct proc_ns_operations pidns_operations; | |
| 23 | extern const struct proc_ns_operations userns_operations; | |
| 24 | extern const struct proc_ns_operations mntns_operations; | |
| 25 | ||
| 26 | /* | |
| 27 | * We always define these enumerators | |
| 28 | */ | |
| 29 | enum { | |
| 30 | PROC_ROOT_INO = 1, | |
| 31 | PROC_IPC_INIT_INO = 0xEFFFFFFFU, | |
| 32 | PROC_UTS_INIT_INO = 0xEFFFFFFEU, | |
| 33 | PROC_USER_INIT_INO = 0xEFFFFFFDU, | |
| 34 | PROC_PID_INIT_INO = 0xEFFFFFFCU, | |
| 35 | }; | |
| 36 | ||
| 37 | #ifdef CONFIG_PROC_FS | |
| 38 | ||
| 39 | extern int pid_ns_prepare_proc(struct pid_namespace *ns); | |
| 40 | extern void pid_ns_release_proc(struct pid_namespace *ns); | |
| 41 | extern struct file *proc_ns_fget(int fd); | |
| f77c8014 | 42 | extern struct ns_common *get_proc_ns(struct inode *); |
| 0bb80f24 DH |
43 | extern int proc_alloc_inum(unsigned int *pino); |
| 44 | extern void proc_free_inum(unsigned int inum); | |
| 45 | extern bool proc_ns_inode(struct inode *inode); | |
| 46 | ||
| 47 | #else /* CONFIG_PROC_FS */ | |
| 48 | ||
| 49 | static inline int pid_ns_prepare_proc(struct pid_namespace *ns) { return 0; } | |
| 50 | static inline void pid_ns_release_proc(struct pid_namespace *ns) {} | |
| 51 | ||
| 52 | static inline struct file *proc_ns_fget(int fd) | |
| 53 | { | |
| 54 | return ERR_PTR(-EINVAL); | |
| 55 | } | |
| 56 | ||
| f77c8014 | 57 | static inline struct ns_common *get_proc_ns(struct inode *inode) { return NULL; } |
| 0bb80f24 DH |
58 | |
| 59 | static inline int proc_alloc_inum(unsigned int *inum) | |
| 60 | { | |
| 61 | *inum = 1; | |
| 62 | return 0; | |
| 63 | } | |
| 64 | static inline void proc_free_inum(unsigned int inum) {} | |
| 65 | static inline bool proc_ns_inode(struct inode *inode) { return false; } | |
| 66 | ||
| 67 | #endif /* CONFIG_PROC_FS */ | |
| 68 | ||
| 6344c433 AV |
69 | #define ns_alloc_inum(ns) proc_alloc_inum(&(ns)->inum) |
| 70 | #define ns_free_inum(ns) proc_free_inum((ns)->inum) | |
| 71 | ||
| 0bb80f24 | 72 | #endif /* _LINUX_PROC_NS_H */ |