75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
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/*
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* procfs namespace bits
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*/
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#ifndef _LINUX_PROC_NS_H
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#define _LINUX_PROC_NS_H
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struct pid_namespace;
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struct nsproxy;
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struct proc_ns_operations {
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const char *name;
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int type;
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void *(*get)(struct task_struct *task);
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void (*put)(void *ns);
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int (*install)(struct nsproxy *nsproxy, void *ns);
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unsigned int (*inum)(void *ns);
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};
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struct proc_ns {
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void *ns;
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const struct proc_ns_operations *ns_ops;
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};
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extern const struct proc_ns_operations netns_operations;
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extern const struct proc_ns_operations utsns_operations;
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extern const struct proc_ns_operations ipcns_operations;
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extern const struct proc_ns_operations pidns_operations;
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extern const struct proc_ns_operations userns_operations;
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extern const struct proc_ns_operations mntns_operations;
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/*
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* We always define these enumerators
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*/
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enum {
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PROC_ROOT_INO = 1,
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PROC_IPC_INIT_INO = 0xEFFFFFFFU,
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PROC_UTS_INIT_INO = 0xEFFFFFFEU,
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PROC_USER_INIT_INO = 0xEFFFFFFDU,
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PROC_PID_INIT_INO = 0xEFFFFFFCU,
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};
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#ifdef CONFIG_PROC_FS
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extern int pid_ns_prepare_proc(struct pid_namespace *ns);
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extern void pid_ns_release_proc(struct pid_namespace *ns);
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extern struct file *proc_ns_fget(int fd);
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extern struct proc_ns *get_proc_ns(struct inode *);
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extern int proc_alloc_inum(unsigned int *pino);
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extern void proc_free_inum(unsigned int inum);
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extern bool proc_ns_inode(struct inode *inode);
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#else /* CONFIG_PROC_FS */
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static inline int pid_ns_prepare_proc(struct pid_namespace *ns) { return 0; }
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static inline void pid_ns_release_proc(struct pid_namespace *ns) {}
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static inline struct file *proc_ns_fget(int fd)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct proc_ns *get_proc_ns(struct inode *inode) { return NULL; }
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static inline int proc_alloc_inum(unsigned int *inum)
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{
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*inum = 1;
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return 0;
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}
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static inline void proc_free_inum(unsigned int inum) {}
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static inline bool proc_ns_inode(struct inode *inode) { return false; }
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#endif /* CONFIG_PROC_FS */
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#endif /* _LINUX_PROC_NS_H */
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