1 /* fs/ internal definitions
3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
13 struct file_system_type;
19 struct shrink_control;
25 extern void __init bdev_cache_init(void);
27 extern int __sync_blockdev(struct block_device *bdev, int wait);
30 static inline void bdev_cache_init(void)
34 static inline int __sync_blockdev(struct block_device *bdev, int wait)
43 extern void guard_bio_eod(int rw, struct bio *bio);
44 extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
45 get_block_t *get_block, struct iomap *iomap);
50 extern void __init chrdev_init(void);
55 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
56 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
57 const char *, unsigned int, struct path *);
58 long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
59 long do_rmdir(int dfd, const char __user *pathname);
60 long do_unlinkat(int dfd, struct filename *name);
65 extern void *copy_mount_options(const void __user *);
66 extern char *copy_mount_string(const void __user *);
68 extern struct vfsmount *lookup_mnt(const struct path *);
69 extern int finish_automount(struct vfsmount *, struct path *);
71 extern int sb_prepare_remount_readonly(struct super_block *);
73 extern void __init mnt_init(void);
75 extern int __mnt_want_write(struct vfsmount *);
76 extern int __mnt_want_write_file(struct file *);
77 extern int mnt_want_write_file_path(struct file *);
78 extern void __mnt_drop_write(struct vfsmount *);
79 extern void __mnt_drop_write_file(struct file *);
80 extern void mnt_drop_write_file_path(struct file *);
85 extern void chroot_fs_refs(const struct path *, const struct path *);
90 extern struct file *get_empty_filp(void);
95 extern int do_remount_sb(struct super_block *, int, void *, int);
96 extern bool trylock_super(struct super_block *sb);
97 extern struct dentry *mount_fs(struct file_system_type *,
98 int, const char *, void *);
99 extern struct super_block *user_get_super(dev_t);
111 extern struct file *do_filp_open(int dfd, struct filename *pathname,
112 const struct open_flags *op);
113 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
114 const char *, const struct open_flags *);
116 extern int open_check_o_direct(struct file *f);
117 extern int vfs_open(const struct path *, struct file *, const struct cred *);
118 extern struct file *filp_clone_open(struct file *);
123 extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
124 extern void inode_add_lru(struct inode *inode);
125 extern int dentry_needs_remove_privs(struct dentry *dentry);
127 extern bool __atime_needs_update(const struct path *, struct inode *, bool);
128 static inline bool atime_needs_update_rcu(const struct path *path,
131 return __atime_needs_update(path, inode, true);
137 extern void inode_io_list_del(struct inode *inode);
139 extern long get_nr_dirty_inodes(void);
140 extern int invalidate_inodes(struct super_block *, bool);
145 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
146 extern int d_set_mounted(struct dentry *dentry);
147 extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
148 extern struct dentry *d_alloc_cursor(struct dentry *);
153 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
158 extern const struct file_operations pipefifo_fops;
163 extern void group_pin_kill(struct hlist_head *p);
164 extern void mnt_pin_kill(struct mount *m);
169 extern const struct dentry_operations ns_dentry_operations;
174 extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
176 extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
181 typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
182 void *data, struct iomap *iomap);
184 loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
185 unsigned flags, const struct iomap_ops *ops, void *data,
186 iomap_actor_t actor);
189 int sb_init_dio_done_wq(struct super_block *sb);