2 * procfs namespace bits
4 #ifndef _LINUX_PROC_NS_H
5 #define _LINUX_PROC_NS_H
7 #include <linux/ns_common.h>
15 struct proc_ns_operations {
17 const char *real_ns_name;
19 struct ns_common *(*get)(struct task_struct *task);
20 void (*put)(struct ns_common *ns);
21 int (*install)(struct nsproxy *nsproxy, struct ns_common *ns);
22 struct user_namespace *(*owner)(struct ns_common *ns);
23 struct ns_common *(*get_parent)(struct ns_common *ns);
26 extern const struct proc_ns_operations netns_operations;
27 extern const struct proc_ns_operations utsns_operations;
28 extern const struct proc_ns_operations ipcns_operations;
29 extern const struct proc_ns_operations pidns_operations;
30 extern const struct proc_ns_operations pidns_for_children_operations;
31 extern const struct proc_ns_operations userns_operations;
32 extern const struct proc_ns_operations mntns_operations;
33 extern const struct proc_ns_operations cgroupns_operations;
36 * We always define these enumerators
40 PROC_IPC_INIT_INO = 0xEFFFFFFFU,
41 PROC_UTS_INIT_INO = 0xEFFFFFFEU,
42 PROC_USER_INIT_INO = 0xEFFFFFFDU,
43 PROC_PID_INIT_INO = 0xEFFFFFFCU,
44 PROC_CGROUP_INIT_INO = 0xEFFFFFFBU,
49 extern int pid_ns_prepare_proc(struct pid_namespace *ns);
50 extern void pid_ns_release_proc(struct pid_namespace *ns);
51 extern int proc_alloc_inum(unsigned int *pino);
52 extern void proc_free_inum(unsigned int inum);
54 #else /* CONFIG_PROC_FS */
56 static inline int pid_ns_prepare_proc(struct pid_namespace *ns) { return 0; }
57 static inline void pid_ns_release_proc(struct pid_namespace *ns) {}
59 static inline int proc_alloc_inum(unsigned int *inum)
64 static inline void proc_free_inum(unsigned int inum) {}
66 #endif /* CONFIG_PROC_FS */
68 static inline int ns_alloc_inum(struct ns_common *ns)
70 atomic_long_set(&ns->stashed, 0);
71 return proc_alloc_inum(&ns->inum);
74 #define ns_free_inum(ns) proc_free_inum((ns)->inum)
76 extern struct file *proc_ns_fget(int fd);
77 #define get_proc_ns(inode) ((struct ns_common *)(inode)->i_private)
78 extern void *ns_get_path(struct path *path, struct task_struct *task,
79 const struct proc_ns_operations *ns_ops);
81 extern int ns_get_name(char *buf, size_t size, struct task_struct *task,
82 const struct proc_ns_operations *ns_ops);
83 extern void nsfs_init(void);
85 #endif /* _LINUX_PROC_NS_H */