LXR linux/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
  12struct super_block;
  13struct linux_binprm;
  14struct path;
  15
  16/*
  17 * block_dev.c
  18 */
  19#ifdef CONFIG_BLOCK
  20extern struct super_block *blockdev_superblock;
  21extern void __init bdev_cache_init(void);
  22
  23static inline int sb_is_blkdev_sb(struct super_block *sb)
  24{
  25        return sb == blockdev_superblock;
  26}
  27
  28extern int __sync_blockdev(struct block_device *bdev, int wait);
  29
  30#else
  31static inline void bdev_cache_init(void)
  32{
  33}
  34
  35static inline int sb_is_blkdev_sb(struct super_block *sb)
  36{
  37        return 0;
  38}
  39
  40static inline int __sync_blockdev(struct block_device *bdev, int wait)
  41{
  42        return 0;
  43}
  44#endif
  45
  46/*
  47 * char_dev.c
  48 */
  49extern void __init chrdev_init(void);
  50
  51/*
  52 * exec.c
  53 */
  54extern int check_unsafe_exec(struct linux_binprm *);
  55
  56/*
  57 * namespace.c
  58 */
  59extern int copy_mount_options(const void __user *, unsigned long *);
  60extern int copy_mount_string(const void __user *, char **);
  61
  62extern void free_vfsmnt(struct vfsmount *);
  63extern struct vfsmount *alloc_vfsmnt(const char *);
  64extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
  65extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
  66                                struct vfsmount *);
  67extern void release_mounts(struct list_head *);
  68extern void umount_tree(struct vfsmount *, int, struct list_head *);
  69extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
  70
  71extern void __init mnt_init(void);
  72
  73extern spinlock_t vfsmount_lock;
  74
  75/*
  76 * fs_struct.c
  77 */
  78extern void chroot_fs_refs(struct path *, struct path *);
  79
  80/*
  81 * file_table.c
  82 */
  83extern void mark_files_ro(struct super_block *);
  84extern struct file *get_empty_filp(void);
  85
  86/*
  87 * super.c
  88 */
  89extern int do_remount_sb(struct super_block *, int, void *, int);
  90extern void __put_super(struct super_block *sb);
  91extern void put_super(struct super_block *sb);
  92
  93/*
  94 * open.c
  95 */
  96struct nameidata;
  97extern struct file *nameidata_to_filp(struct nameidata *);
  98extern void release_open_intent(struct nameidata *);
  99