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.
12 #include <linux/lglock.h>
15 struct file_system_type;
24 extern void __init bdev_cache_init(void);
26 extern int __sync_blockdev(struct block_device *bdev, int wait);
29 static inline void bdev_cache_init(void)
33 static inline int __sync_blockdev(struct block_device *bdev, int wait)
42 extern void __init chrdev_init(void);
47 extern int __inode_permission(struct inode *, int);
48 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
49 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
50 const char *, unsigned int, struct path *);
55 extern int copy_mount_options(const void __user *, unsigned long *);
56 extern int copy_mount_string(const void __user *, char **);
58 extern struct vfsmount *lookup_mnt(struct path *);
59 extern int finish_automount(struct vfsmount *, struct path *);
61 extern int sb_prepare_remount_readonly(struct super_block *);
63 extern void __init mnt_init(void);
65 extern struct lglock vfsmount_lock;
67 extern int __mnt_want_write(struct vfsmount *);
68 extern int __mnt_want_write_file(struct file *);
69 extern void __mnt_drop_write(struct vfsmount *);
70 extern void __mnt_drop_write_file(struct file *);
75 extern void chroot_fs_refs(const struct path *, const struct path *);
80 extern void file_sb_list_add(struct file *f, struct super_block *sb);
81 extern void file_sb_list_del(struct file *f);
82 extern void mark_files_ro(struct super_block *);
83 extern struct file *get_empty_filp(void);
88 extern int do_remount_sb(struct super_block *, int, void *, int);
89 extern bool grab_super_passive(struct super_block *sb);
90 extern struct dentry *mount_fs(struct file_system_type *,
91 int, const char *, void *);
92 extern struct super_block *user_get_super(dev_t);
104 extern struct file *do_filp_open(int dfd, struct filename *pathname,
105 const struct open_flags *op);
106 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
107 const char *, const struct open_flags *);
109 extern long do_handle_open(int mountdirfd,
110 struct file_handle __user *ufh, int open_flag);
111 extern int open_check_o_direct(struct file *f);
116 extern spinlock_t inode_sb_list_lock;
117 extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
119 extern void inode_add_lru(struct inode *inode);
124 extern void inode_wb_list_del(struct inode *inode);
126 extern long get_nr_dirty_inodes(void);
127 extern void evict_inodes(struct super_block *);
128 extern int invalidate_inodes(struct super_block *, bool);
133 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
134 extern int d_set_mounted(struct dentry *dentry);
135 extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
141 extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
142 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
143 extern ssize_t do_aio_read(struct kiocb *kiocb, const struct iovec *iov,
144 unsigned long nr_segs, loff_t pos);
145 extern ssize_t do_aio_write(struct kiocb *kiocb, const struct iovec *iov,
146 unsigned long nr_segs, loff_t pos);
151 extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
152 loff_t *opos, size_t len, unsigned int flags);
157 extern const struct file_operations pipefifo_fops;