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 3072
  26
  27 struct btrfs_ioctl_vol_args {
  28         __s64 fd;
  29         char name[BTRFS_PATH_NAME_MAX + 1];
  30 };
  31
  32 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
  33                                    struct btrfs_ioctl_vol_args)
  34 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
  35                                    struct btrfs_ioctl_vol_args)
  36 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
  37                                    struct btrfs_ioctl_vol_args)
  38 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
  39                                    struct btrfs_ioctl_vol_args)
  40 /* trans start and trans end are dangerous, and only for
  41  * use by applications that know how to avoid the
  42  * resulting deadlocks
  43  */
  44 #define BTRFS_IOC_TRANS_START  _IO(BTRFS_IOCTL_MAGIC, 6)
  45 #define BTRFS_IOC_TRANS_END    _IO(BTRFS_IOCTL_MAGIC, 7)
  46 #define BTRFS_IOC_SYNC         _IO(BTRFS_IOCTL_MAGIC, 8)
  47
  48 #define BTRFS_IOC_CLONE        _IOW(BTRFS_IOCTL_MAGIC, 9, int)
  49 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
  50                                    struct btrfs_ioctl_vol_args)
  51 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
  52                                    struct btrfs_ioctl_vol_args)
  53 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
  54                                    struct btrfs_ioctl_vol_args)
  55 struct btrfs_ioctl_clone_range_args {
  56   __s64 src_fd;
  57   __u64 src_offset, src_length;
  58   __u64 dest_offset;
  59 };
  60
  61 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
  62                                   struct btrfs_ioctl_clone_range_args)
  63
  64 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
  65                                    struct btrfs_ioctl_vol_args)
  66
  67 #endif