[deliverable/linux.git] / include / linux / fs_struct.h

#ifndef _LINUX_FS_STRUCT_H
#define _LINUX_FS_STRUCT_H

#include <linux/path.h>
#include <linux/spinlock.h>
#include <linux/seqlock.h>

struct fs_struct {
	int users;
	spinlock_t lock;
	seqcount_t seq;
	int umask;
	int in_exec;
	struct path root, pwd;
};

extern struct kmem_cache *fs_cachep;

extern void exit_fs(struct task_struct *);
extern void set_fs_root(struct fs_struct *, const struct path *);
extern void set_fs_pwd(struct fs_struct *, const struct path *);
extern struct fs_struct *copy_fs_struct(struct fs_struct *);
extern void free_fs_struct(struct fs_struct *);
extern int unshare_fs_struct(void);

static inline void get_fs_root(struct fs_struct *fs, struct path *root)
{
	spin_lock(&fs->lock);
	*root = fs->root;
	path_get(root);
	spin_unlock(&fs->lock);
}

static inline void get_fs_pwd(struct fs_struct *fs, struct path *pwd)
{
	spin_lock(&fs->lock);
	*pwd = fs->pwd;
	path_get(pwd);
	spin_unlock(&fs->lock);
}

extern bool current_chrooted(void);

#endif /* _LINUX_FS_STRUCT_H */
Commit	Line	Data
	1	#ifndef _LINUX_FS_STRUCT_H
	2	#define _LINUX_FS_STRUCT_H
	3
	4	#include <linux/path.h>
	5	#include <linux/spinlock.h>
	6	#include <linux/seqlock.h>
	7
	8	struct fs_struct {
	9	int users;
	10	spinlock_t lock;
	11	seqcount_t seq;
	12	int umask;
	13	int in_exec;
	14	struct path root, pwd;
	15	};
	16
	17	extern struct kmem_cache *fs_cachep;
	18
	19	extern void exit_fs(struct task_struct *);
	20	extern void set_fs_root(struct fs_struct , const struct path );
	21	extern void set_fs_pwd(struct fs_struct , const struct path );
	22	extern struct fs_struct copy_fs_struct(struct fs_struct );
	23	extern void free_fs_struct(struct fs_struct *);
	24	extern int unshare_fs_struct(void);
	25
	26	static inline void get_fs_root(struct fs_struct fs, struct path root)
	27	{
	28	spin_lock(&fs->lock);
	29	*root = fs->root;
	30	path_get(root);
	31	spin_unlock(&fs->lock);
	32	}
	33
	34	static inline void get_fs_pwd(struct fs_struct fs, struct path pwd)
	35	{
	36	spin_lock(&fs->lock);
	37	*pwd = fs->pwd;
	38	path_get(pwd);
	39	spin_unlock(&fs->lock);
	40	}
	41
	42	extern bool current_chrooted(void);
	43
	44	#endif /* _LINUX_FS_STRUCT_H */