1/* fs/ internal definitions 2 * 3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 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. 10 */ 11 12#include <linux/lglock.h> 13 14struct super_block; 15struct linux_binprm; 16struct path; 17 18/* 19 * block_dev.c 20 */ 21#ifdef CONFIG_BLOCK 22extern struct super_block *blockdev_superblock; 23extern void __init bdev_cache_init(void); 24 25static inline int sb_is_blkdev_sb(struct super_block *sb) 26{ 27 return sb == blockdev_superblock; 28} 29 30extern int __sync_blockdev(struct block_device *bdev, int wait); 31 32#else 33static inline void bdev_cache_init(void) 34{ 35} 36 37static inline int sb_is_blkdev_sb(struct super_block *sb) 38{ 39 return 0; 40} 41 42static inline int __sync_blockdev(struct block_device *bdev, int wait) 43{ 44 return 0; 45} 46#endif 47 48/* 49 * char_dev.c 50 */ 51extern void __init chrdev_init(void); 52 53/* 54 * exec.c 55 */ 56extern int check_unsafe_exec(struct linux_binprm *); 57 58/* 59 * namespace.c 60 */ 61extern int copy_mount_options(const void __user *, unsigned long *); 62extern int copy_mount_string(const void __user *, char **); 63 64extern void free_vfsmnt(struct vfsmount *); 65extern struct vfsmount *alloc_vfsmnt(const char *); 66extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); 67extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, 68 struct vfsmount *); 69extern void release_mounts(struct list_head *); 70extern void umount_tree(struct vfsmount *, int, struct list_head *); 71extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); 72 73extern void __init mnt_init(void); 74 75DECLARE_BRLOCK(vfsmount_lock); 76 77 78/* 79 * fs_struct.c 80 */ 81extern void chroot_fs_refs(struct path *, struct path *); 82 83/* 84 * file_table.c 85 */ 86extern void file_sb_list_add(struct file *f, struct super_block *sb); 87extern void file_sb_list_del(struct file *f); 88extern void mark_files_ro(struct super_block *); 89extern struct file *get_empty_filp(void); 90 91/* 92 * super.c 93 */ 94extern int do_remount_sb(struct super_block *, int, void *, int); 95extern void __put_super(struct super_block *sb); 96extern void put_super(struct super_block *sb); 97 98/* 99 * open.c 100 */ 101struct nameidata; 102extern struct file *nameidata_to_filp(struct nameidata *); 103extern void release_open_intent(struct nameidata *); 104