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 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 *);