mirror of https://gitee.com/openkylin/linux.git
197 lines
5.3 KiB
C
197 lines
5.3 KiB
C
/*
|
|
* 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
|
|
|
|
/* this should be 4k */
|
|
#define BTRFS_PATH_NAME_MAX 4087
|
|
struct btrfs_ioctl_vol_args {
|
|
__s64 fd;
|
|
char name[BTRFS_PATH_NAME_MAX + 1];
|
|
};
|
|
|
|
#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
|
|
|
|
#define BTRFS_SUBVOL_NAME_MAX 4039
|
|
struct btrfs_ioctl_vol_args_v2 {
|
|
__s64 fd;
|
|
__u64 transid;
|
|
__u64 flags;
|
|
__u64 unused[4];
|
|
char name[BTRFS_SUBVOL_NAME_MAX + 1];
|
|
};
|
|
|
|
#define BTRFS_INO_LOOKUP_PATH_MAX 4080
|
|
struct btrfs_ioctl_ino_lookup_args {
|
|
__u64 treeid;
|
|
__u64 objectid;
|
|
char name[BTRFS_INO_LOOKUP_PATH_MAX];
|
|
};
|
|
|
|
struct btrfs_ioctl_search_key {
|
|
/* which root are we searching. 0 is the tree of tree roots */
|
|
__u64 tree_id;
|
|
|
|
/* keys returned will be >= min and <= max */
|
|
__u64 min_objectid;
|
|
__u64 max_objectid;
|
|
|
|
/* keys returned will be >= min and <= max */
|
|
__u64 min_offset;
|
|
__u64 max_offset;
|
|
|
|
/* max and min transids to search for */
|
|
__u64 min_transid;
|
|
__u64 max_transid;
|
|
|
|
/* keys returned will be >= min and <= max */
|
|
__u32 min_type;
|
|
__u32 max_type;
|
|
|
|
/*
|
|
* how many items did userland ask for, and how many are we
|
|
* returning
|
|
*/
|
|
__u32 nr_items;
|
|
|
|
/* align to 64 bits */
|
|
__u32 unused;
|
|
|
|
/* some extra for later */
|
|
__u64 unused1;
|
|
__u64 unused2;
|
|
__u64 unused3;
|
|
__u64 unused4;
|
|
};
|
|
|
|
struct btrfs_ioctl_search_header {
|
|
__u64 transid;
|
|
__u64 objectid;
|
|
__u64 offset;
|
|
__u32 type;
|
|
__u32 len;
|
|
};
|
|
|
|
#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
|
|
/*
|
|
* the buf is an array of search headers where
|
|
* each header is followed by the actual item
|
|
* the type field is expanded to 32 bits for alignment
|
|
*/
|
|
struct btrfs_ioctl_search_args {
|
|
struct btrfs_ioctl_search_key key;
|
|
char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
|
|
};
|
|
|
|
struct btrfs_ioctl_clone_range_args {
|
|
__s64 src_fd;
|
|
__u64 src_offset, src_length;
|
|
__u64 dest_offset;
|
|
};
|
|
|
|
/* flags for the defrag range ioctl */
|
|
#define BTRFS_DEFRAG_RANGE_COMPRESS 1
|
|
#define BTRFS_DEFRAG_RANGE_START_IO 2
|
|
|
|
struct btrfs_ioctl_defrag_range_args {
|
|
/* start of the defrag operation */
|
|
__u64 start;
|
|
|
|
/* number of bytes to defrag, use (u64)-1 to say all */
|
|
__u64 len;
|
|
|
|
/*
|
|
* flags for the operation, which can include turning
|
|
* on compression for this one defrag
|
|
*/
|
|
__u64 flags;
|
|
|
|
/*
|
|
* any extent bigger than this will be considered
|
|
* already defragged. Use 0 to take the kernel default
|
|
* Use 1 to say every single extent must be rewritten
|
|
*/
|
|
__u32 extent_thresh;
|
|
|
|
/* spare for later */
|
|
__u32 unused[5];
|
|
};
|
|
|
|
struct btrfs_ioctl_space_info {
|
|
__u64 flags;
|
|
__u64 total_bytes;
|
|
__u64 used_bytes;
|
|
};
|
|
|
|
struct btrfs_ioctl_space_args {
|
|
__u64 space_slots;
|
|
__u64 total_spaces;
|
|
struct btrfs_ioctl_space_info spaces[0];
|
|
};
|
|
|
|
#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)
|
|
#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
|
|
struct btrfs_ioctl_vol_args)
|
|
#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
|
|
struct btrfs_ioctl_defrag_range_args)
|
|
#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
|
|
struct btrfs_ioctl_search_args)
|
|
#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
|
|
struct btrfs_ioctl_ino_lookup_args)
|
|
#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
|
|
#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
|
|
struct btrfs_ioctl_space_args)
|
|
#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
|
|
#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
|
|
#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
|
|
struct btrfs_ioctl_vol_args_v2)
|
|
#endif
|