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 15 /* 16 * block_dev.c 17 */ 18 #ifdef CONFIG_BLOCK 19 extern struct super_block *blockdev_superblock; 20 extern void __init bdev_cache_init(void); 21 22 static inline int sb_is_blkdev_sb(struct super_block *sb) 23 { 24 return sb == blockdev_superblock; 25 } 26 27 #else 28 static inline void bdev_cache_init(void) 29 { 30 } 31 32 static inline int sb_is_blkdev_sb(struct super_block *sb) 33 { 34 return 0; 35 } 36 #endif 37 38 /* 39 * char_dev.c 40 */ 41 extern void __init chrdev_init(void); 42 43 /* 44 * exec.c 45 */ 46 extern void check_unsafe_exec(struct linux_binprm *, struct files_struct *); 47 48 /* 49 * namespace.c 50 */ 51 extern int copy_mount_options(const void __user *, unsigned long *); 52 53 extern void free_vfsmnt(struct vfsmount *); 54 extern struct vfsmount *alloc_vfsmnt(const char *); 55 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); 56 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, 57 struct vfsmount *); 58 extern void release_mounts(struct list_head *); 59 extern void umount_tree(struct vfsmount *, int, struct list_head *); 60 extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); 61 62 extern void __init mnt_init(void); 63