#ifndef _NAMESPACE_H_ | |
#define _NAMESPACE_H_ | |
#ifdef __KERNEL__ | |
#include <linux/mount.h> | |
#include <linux/sched.h> | |
#include <linux/nsproxy.h> | |
struct mnt_namespace { | |
atomic_t count; | |
struct vfsmount * root; | |
struct list_head list; | |
wait_queue_head_t poll; | |
int event; | |
}; | |
extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *, | |
struct fs_struct *); | |
extern void __put_mnt_ns(struct mnt_namespace *ns); | |
static inline void put_mnt_ns(struct mnt_namespace *ns) | |
{ | |
if (atomic_dec_and_lock(&ns->count, &vfsmount_lock)) | |
/* releases vfsmount_lock */ | |
__put_mnt_ns(ns); | |
} | |
static inline void exit_mnt_ns(struct task_struct *p) | |
{ | |
struct mnt_namespace *ns = p->nsproxy->mnt_ns; | |
if (ns) | |
put_mnt_ns(ns); | |
} | |
static inline void get_mnt_ns(struct mnt_namespace *ns) | |
{ | |
atomic_inc(&ns->count); | |
} | |
#endif | |
#endif |