[mirror_ubuntu-bionic-kernel.git] / fs / btrfs / ioctl.h

/*
 * Copyright (C) 2007 Oracle.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License v2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 021110-1307, USA.
 */

#ifndef __IOCTL_
#define __IOCTL_
#include <linux/ioctl.h>

#define BTRFS_IOCTL_MAGIC 0x94
#define BTRFS_VOL_NAME_MAX 255
#define BTRFS_PATH_NAME_MAX 4087

/* this should be 4k */
struct btrfs_ioctl_vol_args {
	__s64 fd;
	char name[BTRFS_PATH_NAME_MAX + 1];
};

struct btrfs_ioctl_clone_range_args {
  __s64 src_fd;
  __u64 src_offset, src_length;
  __u64 dest_offset;
};

#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
				   struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
				   struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
				   struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
				   struct btrfs_ioctl_vol_args)
/* trans start and trans end are dangerous, and only for
 * use by applications that know how to avoid the
 * resulting deadlocks
 */
#define BTRFS_IOC_TRANS_START  _IO(BTRFS_IOCTL_MAGIC, 6)
#define BTRFS_IOC_TRANS_END    _IO(BTRFS_IOCTL_MAGIC, 7)
#define BTRFS_IOC_SYNC         _IO(BTRFS_IOCTL_MAGIC, 8)

#define BTRFS_IOC_CLONE        _IOW(BTRFS_IOCTL_MAGIC, 9, int)
#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
				   struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
				   struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
				   struct btrfs_ioctl_vol_args)

#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
				  struct btrfs_ioctl_clone_range_args)

#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
				   struct btrfs_ioctl_vol_args)

#endif
Commit	Line	Data
6cbd5570 CM	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
c5739bba CM	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
c071fcfd	25	#define BTRFS_PATH_NAME_MAX 4087
8a4b83cc	26
c071fcfd	27	/* this should be 4k */
c5739bba	28	struct btrfs_ioctl_vol_args {
3de4586c	29	__s64 fd;
8a4b83cc	30	char name[BTRFS_PATH_NAME_MAX + 1];
c5739bba CM	31	};
c5739bba CM	32
c071fcfd CM	33	struct btrfs_ioctl_clone_range_args {
	34	__s64 src_fd;
	35	__u64 src_offset, src_length;
	36	__u64 dest_offset;
	37	};
	38
c5739bba CM	39	#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
c5739bba CM	40	struct btrfs_ioctl_vol_args)
6702ed49	41	#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
8352d8a4	42	struct btrfs_ioctl_vol_args)
edbd8d4e CM	43	#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
edbd8d4e CM	44	struct btrfs_ioctl_vol_args)
8a4b83cc CM	45	#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
8a4b83cc CM	46	struct btrfs_ioctl_vol_args)
6bf13c0c SW	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
f2eb0a24	55	#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
788f20eb CM	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)
c5c9cd4d SW	62
	63	#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
	64	struct btrfs_ioctl_clone_range_args)
	65
3de4586c CM	66	#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
	67	struct btrfs_ioctl_vol_args)
	68
c5739bba	69	#endif