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;
26 extern void __init bdev_cache_init(void);
28 extern int __sync_blockdev(struct block_device *bdev, int wait);
31 static inline void bdev_cache_init(void)
35 static inline int __sync_blockdev(struct block_device *bdev, int wait)
44 extern void guard_bio_eod(int rw, struct bio *bio);
45 extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
46 get_block_t *get_block, struct iomap *iomap);
47 void __generic_write_end(struct inode *inode, loff_t pos, unsigned copied,
53 extern void __init chrdev_init(void);
58 extern int parse_monolithic_mount_data(struct fs_context *, void *);
59 extern void fc_drop_locked(struct fs_context *);
64 extern int filename_lookup(int dfd, struct filename *name, unsigned flags,
65 struct path *path, struct path *root);
66 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
67 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
68 const char *, unsigned int, struct path *);
69 long do_mknodat(int dfd, const char __user *filename, umode_t mode,
71 long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
72 long do_rmdir(int dfd, const char __user *pathname);
73 long do_unlinkat(int dfd, struct filename *name);
74 long do_symlinkat(const char __user *oldname, int newdfd,
75 const char __user *newname);
76 int do_linkat(int olddfd, const char __user *oldname, int newdfd,
77 const char __user *newname, int flags);
82 extern void *copy_mount_options(const void __user *);
83 extern char *copy_mount_string(const void __user *);
85 extern struct vfsmount *lookup_mnt(const struct path *);
86 extern int finish_automount(struct vfsmount *, struct path *);
88 extern int sb_prepare_remount_readonly(struct super_block *);
90 extern void __init mnt_init(void);
92 extern int __mnt_want_write_file(struct file *);
93 extern void __mnt_drop_write_file(struct file *);
98 extern void chroot_fs_refs(const struct path *, const struct path *);
103 extern struct file *alloc_empty_file(int, const struct cred *);
104 extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
109 extern int reconfigure_super(struct fs_context *);
110 extern bool trylock_super(struct super_block *sb);
111 extern struct super_block *user_get_super(dev_t);
123 extern struct file *do_filp_open(int dfd, struct filename *pathname,
124 const struct open_flags *op);
125 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
126 const char *, const struct open_flags *);
128 long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
129 long do_faccessat(int dfd, const char __user *filename, int mode);
130 int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
131 int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
134 extern int vfs_open(const struct path *, struct file *);
139 extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
140 extern void inode_add_lru(struct inode *inode);
141 extern int dentry_needs_remove_privs(struct dentry *dentry);
146 extern void inode_io_list_del(struct inode *inode);
148 extern long get_nr_dirty_inodes(void);
149 extern int invalidate_inodes(struct super_block *, bool);
154 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
155 extern int d_set_mounted(struct dentry *dentry);
156 extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
157 extern struct dentry *d_alloc_cursor(struct dentry *);
158 extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
163 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
168 extern const struct file_operations pipefifo_fops;
173 extern void group_pin_kill(struct hlist_head *p);
174 extern void mnt_pin_kill(struct mount *m);
179 extern const struct dentry_operations ns_dentry_operations;
184 extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
190 typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
191 void *data, struct iomap *iomap);
193 loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
194 unsigned flags, const struct iomap_ops *ops, void *data,
195 iomap_actor_t actor);
198 int sb_init_dio_done_wq(struct super_block *sb);