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
;