Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 iomap;
15struct iomap_ops;
16struct linux_binprm;
17struct path;
18struct mount;
19struct shrink_control;
20
21/*
22 * block_dev.c
23 */
24#ifdef CONFIG_BLOCK
25extern void __init bdev_cache_init(void);
26
27extern int __sync_blockdev(struct block_device *bdev, int wait);
28
29#else
30static inline void bdev_cache_init(void)
31{
32}
33
34static inline int __sync_blockdev(struct block_device *bdev, int wait)
35{
36 return 0;
37}
38#endif
39
40/*
41 * buffer.c
42 */
43extern void guard_bio_eod(int rw, struct bio *bio);
44extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
45 get_block_t *get_block, struct iomap *iomap);
46
47/*
48 * char_dev.c
49 */
50extern void __init chrdev_init(void);
51
52/*
53 * namei.c
54 */
55extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
56extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
57 const char *, unsigned int, struct path *);
58long do_unlinkat(int dfd, struct filename *name);
59
60/*
61 * namespace.c
62 */
63extern void *copy_mount_options(const void __user *);
64extern char *copy_mount_string(const void __user *);
65
66extern struct vfsmount *lookup_mnt(const struct path *);
67extern int finish_automount(struct vfsmount *, struct path *);
68
69extern int sb_prepare_remount_readonly(struct super_block *);
70
71extern void __init mnt_init(void);
72
73extern int __mnt_want_write(struct vfsmount *);
74extern int __mnt_want_write_file(struct file *);
75extern int mnt_want_write_file_path(struct file *);
76extern void __mnt_drop_write(struct vfsmount *);
77extern void __mnt_drop_write_file(struct file *);
78extern void mnt_drop_write_file_path(struct file *);
79
80/*
81 * fs_struct.c
82 */
83extern void chroot_fs_refs(const struct path *, const struct path *);
84
85/*
86 * file_table.c
87 */
88extern struct file *get_empty_filp(void);
89
90/*
91 * super.c
92 */
93extern int do_remount_sb(struct super_block *, int, void *, int);
94extern bool trylock_super(struct super_block *sb);
95extern struct dentry *mount_fs(struct file_system_type *,
96 int, const char *, void *);
97extern struct super_block *user_get_super(dev_t);
98
99/*
100 * open.c
101 */
102struct open_flags {
103 int open_flag;
104 umode_t mode;
105 int acc_mode;
106 int intent;
107 int lookup_flags;
108};
109extern struct file *do_filp_open(int dfd, struct filename *pathname,
110 const struct open_flags *op);
111extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
112 const char *, const struct open_flags *);
113
114extern int open_check_o_direct(struct file *f);
115extern int vfs_open(const struct path *, struct file *, const struct cred *);
116extern struct file *filp_clone_open(struct file *);
117
118/*
119 * inode.c
120 */
121extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
122extern void inode_add_lru(struct inode *inode);
123extern int dentry_needs_remove_privs(struct dentry *dentry);
124
125extern bool __atime_needs_update(const struct path *, struct inode *, bool);
126static inline bool atime_needs_update_rcu(const struct path *path,
127 struct inode *inode)
128{
129 return __atime_needs_update(path, inode, true);
130}
131
132/*
133 * fs-writeback.c
134 */
135extern void inode_io_list_del(struct inode *inode);
136
137extern long get_nr_dirty_inodes(void);
138extern int invalidate_inodes(struct super_block *, bool);
139
140/*
141 * dcache.c
142 */
143extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
144extern int d_set_mounted(struct dentry *dentry);
145extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
146extern struct dentry *d_alloc_cursor(struct dentry *);
147
148/*
149 * read_write.c
150 */
151extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
152
153/*
154 * pipe.c
155 */
156extern const struct file_operations pipefifo_fops;
157
158/*
159 * fs_pin.c
160 */
161extern void group_pin_kill(struct hlist_head *p);
162extern void mnt_pin_kill(struct mount *m);
163
164/*
165 * fs/nsfs.c
166 */
167extern const struct dentry_operations ns_dentry_operations;
168
169/*
170 * fs/ioctl.c
171 */
172extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
173 unsigned long arg);
174extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
175
176/*
177 * iomap support:
178 */
179typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
180 void *data, struct iomap *iomap);
181
182loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
183 unsigned flags, const struct iomap_ops *ops, void *data,
184 iomap_actor_t actor);
185
186/* direct-io.c: */
187int sb_init_dio_done_wq(struct super_block *sb);