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;
22 extern void __init bdev_cache_init(void);
24 extern int __sync_blockdev(struct block_device *bdev, int wait);
27 static inline void bdev_cache_init(void)
31 static inline int __sync_blockdev(struct block_device *bdev, int wait)
40 extern void __init chrdev_init(void);
45 extern int __inode_permission(struct inode *, int);
46 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
47 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
48 const char *, unsigned int, struct path *);
53 extern int copy_mount_options(const void __user *, unsigned long *);
54 extern int copy_mount_string(const void __user *, char **);
56 extern struct vfsmount *lookup_mnt(struct path *);
57 extern int finish_automount(struct vfsmount *, struct path *);
59 extern int sb_prepare_remount_readonly(struct super_block *);
61 extern void __init mnt_init(void);
63 extern int __mnt_want_write(struct vfsmount *);
64 extern int __mnt_want_write_file(struct file *);
65 extern void __mnt_drop_write(struct vfsmount *);
66 extern void __mnt_drop_write_file(struct file *);
71 extern void chroot_fs_refs(const struct path *, const struct path *);
76 extern void file_sb_list_add(struct file *f, struct super_block *sb);
77 extern void file_sb_list_del(struct file *f);
78 extern void mark_files_ro(struct super_block *);
79 extern struct file *get_empty_filp(void);
84 extern int do_remount_sb(struct super_block *, int, void *, int);
85 extern bool grab_super_passive(struct super_block *sb);
86 extern struct dentry *mount_fs(struct file_system_type *,
87 int, const char *, void *);
88 extern struct super_block *user_get_super(dev_t);
100 extern struct file *do_filp_open(int dfd, struct filename *pathname,
101 const struct open_flags *op);
102 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
103 const char *, const struct open_flags *);
105 extern long do_handle_open(int mountdirfd,
106 struct file_handle __user *ufh, int open_flag);
107 extern int open_check_o_direct(struct file *f);
112 extern spinlock_t inode_sb_list_lock;
113 extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
115 extern void inode_add_lru(struct inode *inode);
120 extern void inode_wb_list_del(struct inode *inode);
122 extern long get_nr_dirty_inodes(void);
123 extern void evict_inodes(struct super_block *);
124 extern int invalidate_inodes(struct super_block *, bool);
129 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
130 extern int d_set_mounted(struct dentry *dentry);
131 extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
137 extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
138 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
143 extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
144 loff_t *opos, size_t len, unsigned int flags);
149 extern const struct file_operations pipefifo_fops;