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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
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12#include <linux/lglock.h>
13
5e6d12b2 14struct super_block;
a6f76f23 15struct linux_binprm;
3e93cd67 16struct path;
5e6d12b2 17
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18/*
19 * block_dev.c
20 */
9361401e 21#ifdef CONFIG_BLOCK
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22extern struct super_block *blockdev_superblock;
23extern void __init bdev_cache_init(void);
24
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25static inline int sb_is_blkdev_sb(struct super_block *sb)
26{
27 return sb == blockdev_superblock;
28}
29
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30extern int __sync_blockdev(struct block_device *bdev, int wait);
31
9361401e 32#else
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33static inline void bdev_cache_init(void)
34{
35}
9361401e 36
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37static inline int sb_is_blkdev_sb(struct super_block *sb)
38{
39 return 0;
40}
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41
42static inline int __sync_blockdev(struct block_device *bdev, int wait)
43{
44 return 0;
45}
9361401e 46#endif
7b0de42d 47
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48/*
49 * char_dev.c
50 */
51extern void __init chrdev_init(void);
52
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53/*
54 * exec.c
55 */
498052bb 56extern int check_unsafe_exec(struct linux_binprm *);
a6f76f23 57
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58/*
59 * namespace.c
60 */
61extern int copy_mount_options(const void __user *, unsigned long *);
eca6f534 62extern int copy_mount_string(const void __user *, char **);
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63
64extern void free_vfsmnt(struct vfsmount *);
65extern struct vfsmount *alloc_vfsmnt(const char *);
66extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
67extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
68 struct vfsmount *);
69extern void release_mounts(struct list_head *);
70extern void umount_tree(struct vfsmount *, int, struct list_head *);
71extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
72
73extern void __init mnt_init(void);
3e93cd67 74
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75DECLARE_BRLOCK(vfsmount_lock);
76
47cd813f 77
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78/*
79 * fs_struct.c
80 */
81extern void chroot_fs_refs(struct path *, struct path *);
864d7c4c 82
83/*
84 * file_table.c
85 */
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86extern void file_sb_list_add(struct file *f, struct super_block *sb);
87extern void file_sb_list_del(struct file *f);
864d7c4c 88extern void mark_files_ro(struct super_block *);
e81e3f4d 89extern struct file *get_empty_filp(void);
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90
91/*
92 * super.c
93 */
94extern int do_remount_sb(struct super_block *, int, void *, int);
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95extern void __put_super(struct super_block *sb);
96extern void put_super(struct super_block *sb);
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97
98/*
99 * open.c
100 */
101struct nameidata;
102extern struct file *nameidata_to_filp(struct nameidata *);
103extern void release_open_intent(struct nameidata *);