You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
818 B
41 lines
818 B
#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(int, 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
|
|
|