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
{
18 struct ns_common
*(*get
)(struct task_struct
*task
);
19 void (*put
)(struct ns_common
*ns
);
20 int (*install
)(struct nsproxy
*nsproxy
, struct ns_common
*ns
);
21 struct user_namespace
*(*owner
)(struct ns_common
*ns
);
22 struct ns_common
*(*get_parent
)(struct ns_common
*ns
);
25 extern const struct proc_ns_operations netns_operations
;
26 extern const struct proc_ns_operations utsns_operations
;
27 extern const struct proc_ns_operations ipcns_operations
;
28 extern const struct proc_ns_operations pidns_operations
;
29 extern const struct proc_ns_operations userns_operations
;
30 extern const struct proc_ns_operations mntns_operations
;
31 extern const struct proc_ns_operations cgroupns_operations
;
34 * We always define these enumerators
38 PROC_IPC_INIT_INO
= 0xEFFFFFFFU
,
39 PROC_UTS_INIT_INO
= 0xEFFFFFFEU
,
40 PROC_USER_INIT_INO
= 0xEFFFFFFDU
,
41 PROC_PID_INIT_INO
= 0xEFFFFFFCU
,
42 PROC_CGROUP_INIT_INO
= 0xEFFFFFFBU
,
47 extern int pid_ns_prepare_proc(struct pid_namespace
*ns
);
48 extern void pid_ns_release_proc(struct pid_namespace
*ns
);
49 extern int proc_alloc_inum(unsigned int *pino
);
50 extern void proc_free_inum(unsigned int inum
);
52 #else /* CONFIG_PROC_FS */
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
) {}
57 static inline int proc_alloc_inum(unsigned int *inum
)
62 static inline void proc_free_inum(unsigned int inum
) {}
64 #endif /* CONFIG_PROC_FS */
66 static inline int ns_alloc_inum(struct ns_common
*ns
)
68 atomic_long_set(&ns
->stashed
, 0);
69 return proc_alloc_inum(&ns
->inum
);
72 #define ns_free_inum(ns) proc_free_inum((ns)->inum)
74 extern struct file
*proc_ns_fget(int fd
);
75 #define get_proc_ns(inode) ((struct ns_common *)(inode)->i_private)
76 extern void *ns_get_path(struct path
*path
, struct task_struct
*task
,
77 const struct proc_ns_operations
*ns_ops
);
79 extern int ns_get_name(char *buf
, size_t size
, struct task_struct
*task
,
80 const struct proc_ns_operations
*ns_ops
);
81 extern void nsfs_init(void);
83 #endif /* _LINUX_PROC_NS_H */