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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 | |
12 | #include <linux/lglock.h> |
13 | |
14 | struct super_block; |
15 | struct file_system_type; |
16 | struct linux_binprm; |
17 | struct path; |
18 | |
19 | /* |
20 | * block_dev.c |
21 | */ |
22 | #ifdef CONFIG_BLOCK |
23 | extern struct super_block *blockdev_superblock; |
24 | extern void __init bdev_cache_init(void); |
25 | |
26 | static inline int sb_is_blkdev_sb(struct super_block *sb) |
27 | { |
28 | return sb == blockdev_superblock; |
29 | } |
30 | |
31 | extern int __sync_blockdev(struct block_device *bdev, int wait); |
32 | |
33 | #else |
34 | static inline void bdev_cache_init(void) |
35 | { |
36 | } |
37 | |
38 | static inline int sb_is_blkdev_sb(struct super_block *sb) |
39 | { |
40 | return 0; |
41 | } |
42 | |
43 | static inline int __sync_blockdev(struct block_device *bdev, int wait) |
44 | { |
45 | return 0; |
46 | } |
47 | #endif |
48 | |
49 | /* |
50 | * char_dev.c |
51 | */ |
52 | extern void __init chrdev_init(void); |
53 | |
54 | /* |
55 | * exec.c |
56 | */ |
57 | extern int check_unsafe_exec(struct linux_binprm *); |
58 | |
59 | /* |
60 | * namespace.c |
61 | */ |
62 | extern int copy_mount_options(const void __user *, unsigned long *); |
63 | extern int copy_mount_string(const void __user *, char **); |
64 | |
65 | extern unsigned int mnt_get_count(struct vfsmount *mnt); |
66 | extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); |
67 | extern struct vfsmount *lookup_mnt(struct path *); |
68 | extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, |
69 | struct vfsmount *); |
70 | extern void release_mounts(struct list_head *); |
71 | extern void umount_tree(struct vfsmount *, int, struct list_head *); |
72 | extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); |
73 | extern int finish_automount(struct vfsmount *, struct path *); |
74 | |
75 | extern void mnt_make_longterm(struct vfsmount *); |
76 | extern void mnt_make_shortterm(struct vfsmount *); |
77 | |
78 | extern void __init mnt_init(void); |
79 | |
80 | DECLARE_BRLOCK(vfsmount_lock); |
81 | |
82 | |
83 | /* |
84 | * fs_struct.c |
85 | */ |
86 | extern void chroot_fs_refs(struct path *, struct path *); |
87 | |
88 | /* |
89 | * file_table.c |
90 | */ |
91 | extern void file_sb_list_add(struct file *f, struct super_block *sb); |
92 | extern void file_sb_list_del(struct file *f); |
93 | extern void mark_files_ro(struct super_block *); |
94 | extern struct file *get_empty_filp(void); |
95 | |
96 | /* |
97 | * super.c |
98 | */ |
99 | extern int do_remount_sb(struct super_block *, int, void *, int); |
100 | extern void __put_super(struct super_block *sb); |
101 | extern void put_super(struct super_block *sb); |
102 | extern struct dentry *mount_fs(struct file_system_type *, |
103 | int, const char *, void *); |
104 | |
105 | /* |
106 | * open.c |
107 | */ |
108 | struct nameidata; |
109 | extern struct file *nameidata_to_filp(struct nameidata *); |
110 | extern void release_open_intent(struct nameidata *); |
111 | struct open_flags { |
112 | int open_flag; |
113 | int mode; |
114 | int acc_mode; |
115 | int intent; |
116 | }; |
117 | extern struct file *do_filp_open(int dfd, const char *pathname, |
118 | const struct open_flags *op, int lookup_flags); |
119 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
120 | const char *, const struct open_flags *, int lookup_flags); |
121 | |
122 | extern long do_handle_open(int mountdirfd, |
123 | struct file_handle __user *ufh, int open_flag); |
124 | |
125 | /* |
126 | * inode.c |
127 | */ |
128 | extern spinlock_t inode_sb_list_lock; |
129 | |
130 | /* |
131 | * fs-writeback.c |
132 | */ |
133 | extern void inode_wb_list_del(struct inode *inode); |
134 | |
135 | extern int get_nr_dirty_inodes(void); |
136 | extern void evict_inodes(struct super_block *); |
137 | extern int invalidate_inodes(struct super_block *, bool); |
138 |
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