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 struct super_block; 13 struct linux_binprm; 14 struct path; 15 16 /* 17 * block_dev.c 18 */ 19 #ifdef CONFIG_BLOCK 20 extern struct super_block *blockdev_superblock; 21 extern void __init bdev_cache_init(void); 22 23 static inline int sb_is_blkdev_sb(struct super_block *sb) 24 { 25 return sb == blockdev_superblock; 26 } 27 28 extern int __sync_blockdev(struct block_device *bdev, int wait); 29 30 #else 31 static inline void bdev_cache_init(void) 32 { 33 } 34 35 static inline int sb_is_blkdev_sb(struct super_block *sb) 36 { 37 return 0; 38 } 39 40 static inline int __sync_blockdev(struct block_device *bdev, int wait) 41 { 42 return 0; 43 } 44 #endif 45 46 /* 47 * char_dev.c 48 */ 49 extern void __init chrdev_init(void); 50 51 /* 52 * exec.c 53 */ 54 extern int check_unsafe_exec(struct linux_binprm *); 55 56 /* 57 * namespace.c 58 */ 59 extern int copy_mount_options(const void __user *, unsigned long *); 60 extern int copy_mount_string(const void __user *, char **); 61 62 extern void free_vfsmnt(struct vfsmount *); 63 extern struct vfsmount *alloc_vfsmnt(const char *); 64 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); 65 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, 66 struct vfsmount *); 67 extern void release_mounts(struct list_head *); 68 extern void umount_tree(struct vfsmount *, int, struct list_head *); 69 extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); 70 71 extern void __init mnt_init(void); 72 73 /* 74 * fs_struct.c 75 */ 76 extern void chroot_fs_refs(struct path *, struct path *); 77 78 /* 79 * file_table.c 80 */ 81 extern void mark_files_ro(struct super_block *); 82 extern struct file *get_empty_filp(void); 83 84 /* 85 * super.c 86 */ 87 extern int do_remount_sb(struct super_block *, int, void *, int); 88 89 /* 90 * open.c 91 */ 92 struct nameidata; 93 extern struct file *nameidata_to_filp(struct nameidata *); 94 extern void release_open_intent(struct nameidata *); 95