LXR linux/fs/btrfs/ioctl.h

   1/*
   2 * Copyright (C) 2007 Oracle.  All rights reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public
   6 * License v2 as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 * General Public License for more details.
  12 *
  13 * You should have received a copy of the GNU General Public
  14 * License along with this program; if not, write to the
  15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16 * Boston, MA 021110-1307, USA.
  17 */
  18
  19#ifndef __IOCTL_
  20#define __IOCTL_
  21#include <linux/ioctl.h>
  22
  23#define BTRFS_IOCTL_MAGIC 0x94
  24#define BTRFS_VOL_NAME_MAX 255
  25#define BTRFS_PATH_NAME_MAX 4087
  26
  27/* this should be 4k */
  28struct btrfs_ioctl_vol_args {
  29        __s64 fd;
  30        char name[BTRFS_PATH_NAME_MAX + 1];
  31};
  32
  33struct btrfs_ioctl_clone_range_args {
  34  __s64 src_fd;
  35  __u64 src_offset, src_length;
  36  __u64 dest_offset;
  37};
  38
  39#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
  40                                   struct btrfs_ioctl_vol_args)
  41#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
  42                                   struct btrfs_ioctl_vol_args)
  43#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
  44                                   struct btrfs_ioctl_vol_args)
  45#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
  46                                   struct btrfs_ioctl_vol_args)
  47/* trans start and trans end are dangerous, and only for
  48 * use by applications that know how to avoid the
  49 * resulting deadlocks
  50 */
  51#define BTRFS_IOC_TRANS_START  _IO(BTRFS_IOCTL_MAGIC, 6)
  52#define BTRFS_IOC_TRANS_END    _IO(BTRFS_IOCTL_MAGIC, 7)
  53#define BTRFS_IOC_SYNC         _IO(BTRFS_IOCTL_MAGIC, 8)
  54
  55#define BTRFS_IOC_CLONE        _IOW(BTRFS_IOCTL_MAGIC, 9, int)
  56#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
  57                                   struct btrfs_ioctl_vol_args)
  58#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
  59                                   struct btrfs_ioctl_vol_args)
  60#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
  61                                   struct btrfs_ioctl_vol_args)
  62
  63#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
  64                                  struct btrfs_ioctl_clone_range_args)
  65
  66#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
  67                                   struct btrfs_ioctl_vol_args)
  68#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
  69                                struct btrfs_ioctl_vol_args)
  70#endif
  71