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 #else 29 static inline void bdev_cache_init(void) 30 { 31 } 32 33 static inline int sb_is_blkdev_sb(struct super_block *sb) 34 { 35 return 0; 36 } 37 #endif 38 39 /* 40 * char_dev.c 41 */ 42 extern void __init chrdev_init(void); 43 44 /* 45 * exec.c 46 */ 47 extern int check_unsafe_exec(struct linux_binprm *); 48 49 /* 50 * namespace.c 51 */ 52 extern int copy_mount_options(const void __user *, unsigned long *); 53 54 extern void free_vfsmnt(struct vfsmount *); 55 extern struct vfsmount *alloc_vfsmnt(const char *); 56 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); 57 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, 58 struct vfsmount *); 59 extern void release_mounts(struct list_head *); 60 extern void umount_tree(struct vfsmount *, int, struct list_head *); 61 extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); 62 63 extern void __init mnt_init(void); 64 65 /* 66 * fs_struct.c 67 */ 68 extern void chroot_fs_refs(struct path *, struct path *); 69