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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
12struct super_block;
13struct file_system_type;
14struct linux_binprm;
15struct path;
16struct mount;
17struct shrink_control;
18
19/*
20 * block_dev.c
21 */
22#ifdef CONFIG_BLOCK
23extern void __init bdev_cache_init(void);
24
25extern int __sync_blockdev(struct block_device *bdev, int wait);
26
27#else
28static inline void bdev_cache_init(void)
29{
30}
31
32static inline int __sync_blockdev(struct block_device *bdev, int wait)
33{
34 return 0;
35}
36#endif
37
38/*
39 * buffer.c
40 */
41extern void guard_bio_eod(int rw, struct bio *bio);
42
43/*
44 * char_dev.c
45 */
46extern void __init chrdev_init(void);
47
48/*
49 * namei.c
50 */
51extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
52extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
53 const char *, unsigned int, struct path *);
54
55/*
56 * namespace.c
57 */
58extern void *copy_mount_options(const void __user *);
59extern char *copy_mount_string(const void __user *);
60
61extern struct vfsmount *lookup_mnt(struct path *);
62extern int finish_automount(struct vfsmount *, struct path *);
63
64extern int sb_prepare_remount_readonly(struct super_block *);
65
66extern void __init mnt_init(void);
67
68extern int __mnt_want_write(struct vfsmount *);
69extern int __mnt_want_write_file(struct file *);
70extern void __mnt_drop_write(struct vfsmount *);
71extern void __mnt_drop_write_file(struct file *);
72
73/*
74 * fs_struct.c
75 */
76extern void chroot_fs_refs(const struct path *, const struct path *);
77
78/*
79 * file_table.c
80 */
81extern struct file *get_empty_filp(void);
82
83/*
84 * super.c
85 */
86extern int do_remount_sb(struct super_block *, int, void *, int);
87extern bool trylock_super(struct super_block *sb);
88extern struct dentry *mount_fs(struct file_system_type *,
89 int, const char *, void *);
90extern struct super_block *user_get_super(dev_t);
91
92/*
93 * open.c
94 */
95struct open_flags {
96 int open_flag;
97 umode_t mode;
98 int acc_mode;
99 int intent;
100 int lookup_flags;
101};
102extern struct file *do_filp_open(int dfd, struct filename *pathname,
103 const struct open_flags *op);
104extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
105 const char *, const struct open_flags *);
106
107extern long do_handle_open(int mountdirfd,
108 struct file_handle __user *ufh, int open_flag);
109extern int open_check_o_direct(struct file *f);
110extern int vfs_open(const struct path *, struct file *, const struct cred *);
111
112/*
113 * inode.c
114 */
115extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
116extern void inode_add_lru(struct inode *inode);
117
118/*
119 * fs-writeback.c
120 */
121extern void inode_io_list_del(struct inode *inode);
122
123extern long get_nr_dirty_inodes(void);
124extern void evict_inodes(struct super_block *);
125extern int invalidate_inodes(struct super_block *, bool);
126
127/*
128 * dcache.c
129 */
130extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
131extern int d_set_mounted(struct dentry *dentry);
132extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
133
134/*
135 * read_write.c
136 */
137extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
138
139/*
140 * pipe.c
141 */
142extern const struct file_operations pipefifo_fops;
143
144/*
145 * fs_pin.c
146 */
147extern void group_pin_kill(struct hlist_head *p);
148extern void mnt_pin_kill(struct mount *m);
149
150/*
151 * fs/nsfs.c
152 */
153extern struct dentry_operations ns_dentry_operations;
154
155/*
156 * fs/ioctl.c
157 */
158extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
159 unsigned long arg);
160extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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
12struct super_block;
13struct file_system_type;
14struct linux_binprm;
15struct path;
16struct mount;
17
18/*
19 * block_dev.c
20 */
21#ifdef CONFIG_BLOCK
22extern void __init bdev_cache_init(void);
23
24extern int __sync_blockdev(struct block_device *bdev, int wait);
25
26#else
27static inline void bdev_cache_init(void)
28{
29}
30
31static inline int __sync_blockdev(struct block_device *bdev, int wait)
32{
33 return 0;
34}
35#endif
36
37/*
38 * char_dev.c
39 */
40extern void __init chrdev_init(void);
41
42/*
43 * namei.c
44 */
45extern int __inode_permission(struct inode *, int);
46extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
47extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
48 const char *, unsigned int, struct path *);
49
50/*
51 * namespace.c
52 */
53extern int copy_mount_options(const void __user *, unsigned long *);
54extern int copy_mount_string(const void __user *, char **);
55
56extern struct vfsmount *lookup_mnt(struct path *);
57extern int finish_automount(struct vfsmount *, struct path *);
58
59extern int sb_prepare_remount_readonly(struct super_block *);
60
61extern void __init mnt_init(void);
62
63extern int __mnt_want_write(struct vfsmount *);
64extern int __mnt_want_write_file(struct file *);
65extern void __mnt_drop_write(struct vfsmount *);
66extern void __mnt_drop_write_file(struct file *);
67
68/*
69 * fs_struct.c
70 */
71extern void chroot_fs_refs(const struct path *, const struct path *);
72
73/*
74 * file_table.c
75 */
76extern struct file *get_empty_filp(void);
77
78/*
79 * super.c
80 */
81extern int do_remount_sb(struct super_block *, int, void *, int);
82extern bool grab_super_passive(struct super_block *sb);
83extern struct dentry *mount_fs(struct file_system_type *,
84 int, const char *, void *);
85extern struct super_block *user_get_super(dev_t);
86
87/*
88 * open.c
89 */
90struct open_flags {
91 int open_flag;
92 umode_t mode;
93 int acc_mode;
94 int intent;
95 int lookup_flags;
96};
97extern struct file *do_filp_open(int dfd, struct filename *pathname,
98 const struct open_flags *op);
99extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
100 const char *, const struct open_flags *);
101
102extern long do_handle_open(int mountdirfd,
103 struct file_handle __user *ufh, int open_flag);
104extern int open_check_o_direct(struct file *f);
105
106/*
107 * inode.c
108 */
109extern spinlock_t inode_sb_list_lock;
110extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
111 int nid);
112extern void inode_add_lru(struct inode *inode);
113
114/*
115 * fs-writeback.c
116 */
117extern void inode_wb_list_del(struct inode *inode);
118
119extern long get_nr_dirty_inodes(void);
120extern void evict_inodes(struct super_block *);
121extern int invalidate_inodes(struct super_block *, bool);
122
123/*
124 * dcache.c
125 */
126extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
127extern int d_set_mounted(struct dentry *dentry);
128extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
129 int nid);
130
131/*
132 * read_write.c
133 */
134extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
135extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
136
137/*
138 * splice.c
139 */
140extern 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 */
146extern const struct file_operations pipefifo_fops;