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/* SPDX-License-Identifier: GPL-2.0 */
#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_spinlock_t seq;
int umask;
int in_exec;
struct path root, pwd;
} __randomize_layout;
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 */