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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 | struct super_block; |
13 | struct file_system_type; |
14 | struct linux_binprm; |
15 | struct path; |
16 | struct mount; |
17 | |
18 | /* |
19 | * block_dev.c |
20 | */ |
21 | #ifdef CONFIG_BLOCK |
22 | extern void __init bdev_cache_init(void); |
23 | |
24 | extern int __sync_blockdev(struct block_device *bdev, int wait); |
25 | |
26 | #else |
27 | static inline void bdev_cache_init(void) |
28 | { |
29 | } |
30 | |
31 | static inline int __sync_blockdev(struct block_device *bdev, int wait) |
32 | { |
33 | return 0; |
34 | } |
35 | #endif |
36 | |
37 | /* |
38 | * char_dev.c |
39 | */ |
40 | extern void __init chrdev_init(void); |
41 | |
42 | /* |
43 | * namei.c |
44 | */ |
45 | extern int __inode_permission(struct inode *, int); |
46 | extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *); |
47 | extern int vfs_path_lookup(struct dentry *, struct vfsmount *, |
48 | const char *, unsigned int, struct path *); |
49 | |
50 | /* |
51 | * namespace.c |
52 | */ |
53 | extern int copy_mount_options(const void __user *, unsigned long *); |
54 | extern int copy_mount_string(const void __user *, char **); |
55 | |
56 | extern struct vfsmount *lookup_mnt(struct path *); |
57 | extern int finish_automount(struct vfsmount *, struct path *); |
58 | |
59 | extern int sb_prepare_remount_readonly(struct super_block *); |
60 | |
61 | extern void __init mnt_init(void); |
62 | |
63 | extern int __mnt_want_write(struct vfsmount *); |
64 | extern int __mnt_want_write_file(struct file *); |
65 | extern void __mnt_drop_write(struct vfsmount *); |
66 | extern void __mnt_drop_write_file(struct file *); |
67 | |
68 | /* |
69 | * fs_struct.c |
70 | */ |
71 | extern void chroot_fs_refs(const struct path *, const struct path *); |
72 | |
73 | /* |
74 | * file_table.c |
75 | */ |
76 | extern struct file *get_empty_filp(void); |
77 | |
78 | /* |
79 | * super.c |
80 | */ |
81 | extern int do_remount_sb(struct super_block *, int, void *, int); |
82 | extern bool grab_super_passive(struct super_block *sb); |
83 | extern struct dentry *mount_fs(struct file_system_type *, |
84 | int, const char *, void *); |
85 | extern struct super_block *user_get_super(dev_t); |
86 | |
87 | /* |
88 | * open.c |
89 | */ |
90 | struct open_flags { |
91 | int open_flag; |
92 | umode_t mode; |
93 | int acc_mode; |
94 | int intent; |
95 | int lookup_flags; |
96 | }; |
97 | extern struct file *do_filp_open(int dfd, struct filename *pathname, |
98 | const struct open_flags *op); |
99 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
100 | const char *, const struct open_flags *); |
101 | |
102 | extern long do_handle_open(int mountdirfd, |
103 | struct file_handle __user *ufh, int open_flag); |
104 | extern int open_check_o_direct(struct file *f); |
105 | |
106 | /* |
107 | * inode.c |
108 | */ |
109 | extern spinlock_t inode_sb_list_lock; |
110 | extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan, |
111 | int nid); |
112 | extern void inode_add_lru(struct inode *inode); |
113 | |
114 | /* |
115 | * fs-writeback.c |
116 | */ |
117 | extern void inode_wb_list_del(struct inode *inode); |
118 | |
119 | extern long get_nr_dirty_inodes(void); |
120 | extern void evict_inodes(struct super_block *); |
121 | extern int invalidate_inodes(struct super_block *, bool); |
122 | |
123 | /* |
124 | * dcache.c |
125 | */ |
126 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); |
127 | extern int d_set_mounted(struct dentry *dentry); |
128 | extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan, |
129 | int nid); |
130 | |
131 | /* |
132 | * read_write.c |
133 | */ |
134 | extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *); |
135 | extern int rw_verify_area(int, struct file *, const loff_t *, size_t); |
136 | |
137 | /* |
138 | * splice.c |
139 | */ |
140 | extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, |
141 | loff_t *opos, size_t len, unsigned int flags); |
142 | |
143 | /* |
144 | * pipe.c |
145 | */ |
146 | extern const struct file_operations pipefifo_fops; |
147 |
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