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89 lines
2.6 KiB
89 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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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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#include <linux/ns_common.h> |
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struct pid_namespace; |
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struct nsset; |
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struct path; |
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struct task_struct; |
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struct inode; |
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struct proc_ns_operations { |
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const char *name; |
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const char *real_ns_name; |
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int type; |
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struct ns_common *(*get)(struct task_struct *task); |
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void (*put)(struct ns_common *ns); |
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int (*install)(struct nsset *nsset, struct ns_common *ns); |
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struct user_namespace *(*owner)(struct ns_common *ns); |
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struct ns_common *(*get_parent)(struct ns_common *ns); |
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} __randomize_layout; |
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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 pidns_for_children_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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extern const struct proc_ns_operations cgroupns_operations; |
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extern const struct proc_ns_operations timens_operations; |
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extern const struct proc_ns_operations timens_for_children_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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PROC_CGROUP_INIT_INO = 0xEFFFFFFBU, |
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PROC_TIME_INIT_INO = 0xEFFFFFFAU, |
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}; |
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#ifdef CONFIG_PROC_FS |
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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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#else /* CONFIG_PROC_FS */ |
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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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#endif /* CONFIG_PROC_FS */ |
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static inline int ns_alloc_inum(struct ns_common *ns) |
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{ |
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atomic_long_set(&ns->stashed, 0); |
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return proc_alloc_inum(&ns->inum); |
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} |
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#define ns_free_inum(ns) proc_free_inum((ns)->inum) |
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extern struct file *proc_ns_fget(int fd); |
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#define get_proc_ns(inode) ((struct ns_common *)(inode)->i_private) |
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extern int ns_get_path(struct path *path, struct task_struct *task, |
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const struct proc_ns_operations *ns_ops); |
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typedef struct ns_common *ns_get_path_helper_t(void *); |
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extern int ns_get_path_cb(struct path *path, ns_get_path_helper_t ns_get_cb, |
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void *private_data); |
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extern bool ns_match(const struct ns_common *ns, dev_t dev, ino_t ino); |
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extern int ns_get_name(char *buf, size_t size, struct task_struct *task, |
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const struct proc_ns_operations *ns_ops); |
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extern void nsfs_init(void); |
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#endif /* _LINUX_PROC_NS_H */
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