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 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;