fs/internal.h

   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);