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LeafOS / LeafOS-Devices / android_kernel_realme_mt6785 / f7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79 / . / include / linux / fs_struct.h
blob: eca3d5202138f68bb30dd1a308aaf4e121171663 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#ifndef _LINUX_FS_STRUCT_H
2#define _LINUX_FS_STRUCT_H
3
Jan Blunck6ac08c32008-02-14 19:34:38 -0800[diff] [blame]4#include <linux/path.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]5
6struct fs_struct {
Al Viro498052b2009-03-30 07:20:30 -0400[diff] [blame]7 int users;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]8 rwlock_t lock;
9 int umask;
Al Viro498052b2009-03-30 07:20:30 -0400[diff] [blame]10 int in_exec;
Al Viro7f2da1e2008-05-10 20:44:54 -0400[diff] [blame]11 struct path root, pwd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]12};
13
Christoph Lameteraa362a82006-12-06 20:32:54 -0800[diff] [blame]14extern struct kmem_cache *fs_cachep;
15
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]16extern void exit_fs(struct task_struct *);
Jan Blunckac748a02008-02-14 19:34:39 -0800[diff] [blame]17extern void set_fs_root(struct fs_struct *, struct path *);
18extern void set_fs_pwd(struct fs_struct *, struct path *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19extern struct fs_struct *copy_fs_struct(struct fs_struct *);
Al Viro498052b2009-03-30 07:20:30 -0400[diff] [blame]20extern void free_fs_struct(struct fs_struct *);
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]21extern void daemonize_fs_struct(void);
22extern int unshare_fs_struct(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]23
Miklos Szeredif7ad3c62010-08-10 11:41:36 +0200[diff] [blame^]24static inline void get_fs_root(struct fs_struct *fs, struct path *root)
25{
26 read_lock(&fs->lock);
27 *root = fs->root;
28 path_get(root);
29 read_unlock(&fs->lock);
30}
31
32static inline void get_fs_pwd(struct fs_struct *fs, struct path *pwd)
33{
34 read_lock(&fs->lock);
35 *pwd = fs->pwd;
36 path_get(pwd);
37 read_unlock(&fs->lock);
38}
39
40static inline void get_fs_root_and_pwd(struct fs_struct *fs, struct path *root,
41 struct path *pwd)
42{
43 read_lock(&fs->lock);
44 *root = fs->root;
45 path_get(root);
46 *pwd = fs->pwd;
47 path_get(pwd);
48 read_unlock(&fs->lock);
49}
50
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]51#endif /* _LINUX_FS_STRUCT_H */