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 */