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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 | struct mount; | |
19 | ||
20 | /* | |
21 | * block_dev.c | |
22 | */ | |
23 | #ifdef CONFIG_BLOCK | |
24 | extern void __init bdev_cache_init(void); | |
25 | ||
26 | extern int __sync_blockdev(struct block_device *bdev, int wait); | |
27 | ||
28 | #else | |
29 | static inline void bdev_cache_init(void) | |
30 | { | |
31 | } | |
32 | ||
33 | static inline int __sync_blockdev(struct block_device *bdev, int wait) | |
34 | { | |
35 | return 0; | |
36 | } | |
37 | #endif | |
38 | ||
39 | /* | |
40 | * char_dev.c | |
41 | */ | |
42 | extern void __init chrdev_init(void); | |
43 | ||
44 | /* | |
45 | * namei.c | |
46 | */ | |
47 | extern int __inode_permission(struct inode *, int); | |
48 | ||
49 | /* | |
50 | * namespace.c | |
51 | */ | |
52 | extern int copy_mount_options(const void __user *, unsigned long *); | |
53 | extern int copy_mount_string(const void __user *, char **); | |
54 | ||
55 | extern struct vfsmount *lookup_mnt(struct path *); | |
56 | extern int finish_automount(struct vfsmount *, struct path *); | |
57 | ||
58 | extern int sb_prepare_remount_readonly(struct super_block *); | |
59 | ||
60 | extern void __init mnt_init(void); | |
61 | ||
62 | extern struct lglock vfsmount_lock; | |
63 | ||
64 | extern int __mnt_want_write(struct vfsmount *); | |
65 | extern int __mnt_want_write_file(struct file *); | |
66 | extern void __mnt_drop_write(struct vfsmount *); | |
67 | extern void __mnt_drop_write_file(struct file *); | |
68 | ||
69 | /* | |
70 | * fs_struct.c | |
71 | */ | |
72 | extern void chroot_fs_refs(const struct path *, const struct path *); | |
73 | ||
74 | /* | |
75 | * file_table.c | |
76 | */ | |
77 | extern void file_sb_list_add(struct file *f, struct super_block *sb); | |
78 | extern void file_sb_list_del(struct file *f); | |
79 | extern void mark_files_ro(struct super_block *); | |
80 | extern struct file *get_empty_filp(void); | |
81 | ||
82 | /* | |
83 | * super.c | |
84 | */ | |
85 | extern int do_remount_sb(struct super_block *, int, void *, int); | |
86 | extern bool grab_super_passive(struct super_block *sb); | |
87 | extern struct dentry *mount_fs(struct file_system_type *, | |
88 | int, const char *, void *); | |
89 | extern struct super_block *user_get_super(dev_t); | |
90 | ||
91 | /* | |
92 | * open.c | |
93 | */ | |
94 | struct open_flags { | |
95 | int open_flag; | |
96 | umode_t mode; | |
97 | int acc_mode; | |
98 | int intent; | |
99 | }; | |
100 | extern struct file *do_filp_open(int dfd, struct filename *pathname, | |
101 | const struct open_flags *op, int flags); | |
102 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, | |
103 | const char *, const struct open_flags *, int lookup_flags); | |
104 | ||
105 | extern long do_handle_open(int mountdirfd, | |
106 | struct file_handle __user *ufh, int open_flag); | |
107 | extern int open_check_o_direct(struct file *f); | |
108 | ||
109 | /* | |
110 | * inode.c | |
111 | */ | |
112 | extern spinlock_t inode_sb_list_lock; | |
113 | extern void inode_add_lru(struct inode *inode); | |
114 | ||
115 | /* | |
116 | * fs-writeback.c | |
117 | */ | |
118 | extern void inode_wb_list_del(struct inode *inode); | |
119 | ||
120 | extern int get_nr_dirty_inodes(void); | |
121 | extern void evict_inodes(struct super_block *); | |
122 | extern int invalidate_inodes(struct super_block *, bool); | |
123 | ||
124 | /* | |
125 | * dcache.c | |
126 | */ | |
127 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); | |
128 | ||
129 | /* | |
130 | * read_write.c | |
131 | */ | |
132 | extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *); |