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);
46 int __generic_write_end(struct inode *inode, loff_t pos, unsigned copied,
52 extern void __init chrdev_init(void);
57 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
58 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
59 const char *, unsigned int, struct path *);
60 long do_mknodat(int dfd, const char __user *filename, umode_t mode,
62 long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
63 long do_rmdir(int dfd, const char __user *pathname);
64 long do_unlinkat(int dfd, struct filename *name);
65 long do_symlinkat(const char __user *oldname, int newdfd,
66 const char __user *newname);
67 int do_linkat(int olddfd, const char __user *oldname, int newdfd,
68 const char __user *newname, int flags);
73 extern void *copy_mount_options(const void __user *);
74 extern char *copy_mount_string(const void __user *);
76 extern struct vfsmount *lookup_mnt(const struct path *);
77 extern int finish_automount(struct vfsmount *, struct path *);
79 extern int sb_prepare_remount_readonly(struct super_block *);
81 extern void __init mnt_init(void);
83 extern int __mnt_want_write(struct vfsmount *);
84 extern int __mnt_want_write_file(struct file *);
85 extern void __mnt_drop_write(struct vfsmount *);
86 extern void __mnt_drop_write_file(struct file *);
91 extern void chroot_fs_refs(const struct path *, const struct path *);
96 extern struct file *alloc_empty_file(int, const struct cred *);
97 extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
102 extern int do_remount_sb(struct super_block *, int, void *, int);
103 extern bool trylock_super(struct super_block *sb);
104 extern struct dentry *mount_fs(struct file_system_type *,
105 int, const char *, void *);
106 extern struct super_block *user_get_super(dev_t);
118 extern struct file *do_filp_open(int dfd, struct filename *pathname,
119 const struct open_flags *op);
120 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
121 const char *, const struct open_flags *);
123 long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
124 long do_faccessat(int dfd, const char __user *filename, int mode);
125 int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
126 int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
129 extern int vfs_open(const struct path *, struct file *);
134 extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
135 extern void inode_add_lru(struct inode *inode);
136 extern int dentry_needs_remove_privs(struct dentry *dentry);
141 extern void inode_io_list_del(struct inode *inode);
143 extern long get_nr_dirty_inodes(void);
144 extern int invalidate_inodes(struct super_block *, bool);
149 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
150 extern int d_set_mounted(struct dentry *dentry);
151 extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
152 extern struct dentry *d_alloc_cursor(struct dentry *);
157 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
162 extern const struct file_operations pipefifo_fops;
167 extern void group_pin_kill(struct hlist_head *p);
168 extern void mnt_pin_kill(struct mount *m);
173 extern const struct dentry_operations ns_dentry_operations;
178 extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
184 typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
185 void *data, struct iomap *iomap);
187 loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
188 unsigned flags, const struct iomap_ops *ops, void *data,
189 iomap_actor_t actor);
192 int sb_init_dio_done_wq(struct super_block *sb);