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
 12#include <linux/lglock.h>
 13
 14struct super_block;
 15struct file_system_type;
 16struct linux_binprm;
 17struct path;
 18struct mount;
 
 19
 20/*
 21 * block_dev.c
 22 */
 23#ifdef CONFIG_BLOCK
 24extern void __init bdev_cache_init(void);
 25
 26extern int __sync_blockdev(struct block_device *bdev, int wait);
 27
 28#else
 29static inline void bdev_cache_init(void)
 30{
 31}
 32
 33static inline int __sync_blockdev(struct block_device *bdev, int wait)
 34{
 35	return 0;
 36}
 37#endif
 38
 39/*
 
 
 
 
 
 40 * char_dev.c
 41 */
 42extern void __init chrdev_init(void);
 43
 44/*
 
 
 
 
 
 
 
 45 * namespace.c
 46 */
 47extern int copy_mount_options(const void __user *, unsigned long *);
 48extern int copy_mount_string(const void __user *, char **);
 49
 50extern struct vfsmount *lookup_mnt(struct path *);
 51extern int finish_automount(struct vfsmount *, struct path *);
 52
 53extern void mnt_make_longterm(struct vfsmount *);
 54extern void mnt_make_shortterm(struct vfsmount *);
 55extern int sb_prepare_remount_readonly(struct super_block *);
 56
 57extern void __init mnt_init(void);
 58
 59extern struct lglock vfsmount_lock;
 60
 
 
 61
 62/*
 63 * fs_struct.c
 64 */
 65extern void chroot_fs_refs(struct path *, struct path *);
 66
 67/*
 68 * file_table.c
 69 */
 70extern void file_sb_list_add(struct file *f, struct super_block *sb);
 71extern void file_sb_list_del(struct file *f);
 72extern void mark_files_ro(struct super_block *);
 73extern struct file *get_empty_filp(void);
 74
 75/*
 76 * super.c
 77 */
 78extern int do_remount_sb(struct super_block *, int, void *, int);
 79extern bool grab_super_passive(struct super_block *sb);
 80extern struct dentry *mount_fs(struct file_system_type *,
 81			       int, const char *, void *);
 82extern struct super_block *user_get_super(dev_t);
 83
 84/*
 85 * open.c
 86 */
 87struct nameidata;
 88extern struct file *nameidata_to_filp(struct nameidata *);
 89extern void release_open_intent(struct nameidata *);
 90struct open_flags {
 91	int open_flag;
 92	umode_t mode;
 93	int acc_mode;
 94	int intent;
 
 95};
 96extern struct file *do_filp_open(int dfd, const char *pathname,
 97		const struct open_flags *op, int lookup_flags);
 98extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
 99		const char *, const struct open_flags *, int lookup_flags);
100
101extern long do_handle_open(int mountdirfd,
102			   struct file_handle __user *ufh, int open_flag);
103extern int open_check_o_direct(struct file *f);
 
104
105/*
106 * inode.c
107 */
108extern spinlock_t inode_sb_list_lock;
 
109
110/*
111 * fs-writeback.c
112 */
113extern void inode_wb_list_del(struct inode *inode);
114
115extern int get_nr_dirty_inodes(void);
116extern void evict_inodes(struct super_block *);
117extern int invalidate_inodes(struct super_block *, bool);
118
119/*
120 * dcache.c
121 */
122extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);