1 /* fs/ internal definitions
2 *
3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12 struct super_block;
13 struct linux_binprm;
14 struct path;
15
16 /*
17 * block_dev.c
18 */
19 #ifdef CONFIG_BLOCK
20 extern struct super_block *blockdev_superblock;
21 extern void __init bdev_cache_init(void);
22
23 static inline int sb_is_blkdev_sb(struct super_block *sb)
24 {
25 return sb == blockdev_superblock;
26 }
27
28 extern int __sync_blockdev(struct block_device *bdev, int wait);
29
30 #else
31 static inline void bdev_cache_init(void)
32 {
33 }
34
35 static inline int sb_is_blkdev_sb(struct super_block *sb)
36 {
37 return 0;
38 }
39
40 static inline int __sync_blockdev(struct block_device *bdev, int wait)
41 {
42 return 0;
43 }
44 #endif
45
46 /*
47 * char_dev.c
48 */
49 extern void __init chrdev_init(void);
50
51 /*
52 * exec.c
53 */
54 extern int check_unsafe_exec(struct linux_binprm *);
55
56 /*
57 * namespace.c
58 */
59 extern int copy_mount_options(const void __user *, unsigned long *);
60
61 extern void free_vfsmnt(struct vfsmount *);
62 extern struct vfsmount *alloc_vfsmnt(const char *);
63 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
64 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
65 struct vfsmount *);
66 extern void release_mounts(struct list_head *);
67 extern void umount_tree(struct vfsmount *, int, struct list_head *);
68 extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
69
70 extern void __init mnt_init(void);
71
72 /*
73 * fs_struct.c
74 */
75 extern void chroot_fs_refs(struct path *, struct path *);
76
77 /*
78 * file_table.c
79 */
80 extern void mark_files_ro(struct super_block *);
81
82 /*
83 * super.c
84 */
85 extern int do_remount_sb(struct super_block *, int, void *, int);
86
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