999 строки
30 KiB
C
999 строки
30 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef _UAPI_LINUX_BTRFS_H
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#define _UAPI_LINUX_BTRFS_H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#define BTRFS_IOCTL_MAGIC 0x94
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#define BTRFS_VOL_NAME_MAX 255
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#define BTRFS_LABEL_SIZE 256
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/* this should be 4k */
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#define BTRFS_PATH_NAME_MAX 4087
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struct btrfs_ioctl_vol_args {
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__s64 fd;
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char name[BTRFS_PATH_NAME_MAX + 1];
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};
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#define BTRFS_DEVICE_PATH_NAME_MAX 1024
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#define BTRFS_SUBVOL_NAME_MAX 4039
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#ifndef __KERNEL__
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/* Deprecated since 5.7 */
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# define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
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#endif
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#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
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#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
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#define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
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#define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4)
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#define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \
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(BTRFS_SUBVOL_RDONLY | \
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BTRFS_SUBVOL_QGROUP_INHERIT | \
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BTRFS_DEVICE_SPEC_BY_ID | \
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BTRFS_SUBVOL_SPEC_BY_ID)
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#define BTRFS_FSID_SIZE 16
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#define BTRFS_UUID_SIZE 16
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#define BTRFS_UUID_UNPARSED_SIZE 37
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/*
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* flags definition for qgroup limits
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*
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* Used by:
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* struct btrfs_qgroup_limit.flags
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* struct btrfs_qgroup_limit_item.flags
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*/
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#define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0)
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#define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1)
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#define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2)
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#define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3)
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#define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4)
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#define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5)
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struct btrfs_qgroup_limit {
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__u64 flags;
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__u64 max_rfer;
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__u64 max_excl;
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__u64 rsv_rfer;
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__u64 rsv_excl;
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};
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/*
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* flags definition for qgroup inheritance
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*
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* Used by:
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* struct btrfs_qgroup_inherit.flags
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*/
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#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
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struct btrfs_qgroup_inherit {
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__u64 flags;
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__u64 num_qgroups;
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__u64 num_ref_copies;
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__u64 num_excl_copies;
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struct btrfs_qgroup_limit lim;
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__u64 qgroups[0];
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};
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struct btrfs_ioctl_qgroup_limit_args {
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__u64 qgroupid;
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struct btrfs_qgroup_limit lim;
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};
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/*
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* Arguments for specification of subvolumes or devices, supporting by-name or
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* by-id and flags
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*
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* The set of supported flags depends on the ioctl
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*
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* BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls:
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* - BTRFS_IOC_SUBVOL_GETFLAGS
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* - BTRFS_IOC_SUBVOL_SETFLAGS
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*/
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/* Supported flags for BTRFS_IOC_RM_DEV_V2 */
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#define BTRFS_DEVICE_REMOVE_ARGS_MASK \
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(BTRFS_DEVICE_SPEC_BY_ID)
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/* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */
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#define BTRFS_SUBVOL_CREATE_ARGS_MASK \
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(BTRFS_SUBVOL_RDONLY | \
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BTRFS_SUBVOL_QGROUP_INHERIT)
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/* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */
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#define BTRFS_SUBVOL_DELETE_ARGS_MASK \
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(BTRFS_SUBVOL_SPEC_BY_ID)
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struct btrfs_ioctl_vol_args_v2 {
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__s64 fd;
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__u64 transid;
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__u64 flags;
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union {
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struct {
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__u64 size;
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struct btrfs_qgroup_inherit __user *qgroup_inherit;
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};
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__u64 unused[4];
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};
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union {
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char name[BTRFS_SUBVOL_NAME_MAX + 1];
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__u64 devid;
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__u64 subvolid;
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};
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};
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/*
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* structure to report errors and progress to userspace, either as a
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* result of a finished scrub, a canceled scrub or a progress inquiry
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*/
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struct btrfs_scrub_progress {
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__u64 data_extents_scrubbed; /* # of data extents scrubbed */
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__u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
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__u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
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__u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
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__u64 read_errors; /* # of read errors encountered (EIO) */
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__u64 csum_errors; /* # of failed csum checks */
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__u64 verify_errors; /* # of occurrences, where the metadata
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* of a tree block did not match the
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* expected values, like generation or
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* logical */
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__u64 no_csum; /* # of 4k data block for which no csum
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* is present, probably the result of
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* data written with nodatasum */
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__u64 csum_discards; /* # of csum for which no data was found
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* in the extent tree. */
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__u64 super_errors; /* # of bad super blocks encountered */
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__u64 malloc_errors; /* # of internal kmalloc errors. These
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* will likely cause an incomplete
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* scrub */
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__u64 uncorrectable_errors; /* # of errors where either no intact
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* copy was found or the writeback
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* failed */
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__u64 corrected_errors; /* # of errors corrected */
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__u64 last_physical; /* last physical address scrubbed. In
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* case a scrub was aborted, this can
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* be used to restart the scrub */
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__u64 unverified_errors; /* # of occurrences where a read for a
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* full (64k) bio failed, but the re-
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* check succeeded for each 4k piece.
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* Intermittent error. */
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};
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#define BTRFS_SCRUB_READONLY 1
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#define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY)
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struct btrfs_ioctl_scrub_args {
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__u64 devid; /* in */
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__u64 start; /* in */
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__u64 end; /* in */
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__u64 flags; /* in */
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struct btrfs_scrub_progress progress; /* out */
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/* pad to 1k */
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__u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
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};
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#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
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#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
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struct btrfs_ioctl_dev_replace_start_params {
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__u64 srcdevid; /* in, if 0, use srcdev_name instead */
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__u64 cont_reading_from_srcdev_mode; /* in, see #define
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* above */
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__u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
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__u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
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};
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#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
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#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
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#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
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#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
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#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
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struct btrfs_ioctl_dev_replace_status_params {
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__u64 replace_state; /* out, see #define above */
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__u64 progress_1000; /* out, 0 <= x <= 1000 */
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__u64 time_started; /* out, seconds since 1-Jan-1970 */
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__u64 time_stopped; /* out, seconds since 1-Jan-1970 */
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__u64 num_write_errors; /* out */
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__u64 num_uncorrectable_read_errors; /* out */
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};
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#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
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#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
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#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
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#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
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#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
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#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
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#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3
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struct btrfs_ioctl_dev_replace_args {
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__u64 cmd; /* in */
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__u64 result; /* out */
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union {
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struct btrfs_ioctl_dev_replace_start_params start;
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struct btrfs_ioctl_dev_replace_status_params status;
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}; /* in/out */
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__u64 spare[64];
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};
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struct btrfs_ioctl_dev_info_args {
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__u64 devid; /* in/out */
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__u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
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__u64 bytes_used; /* out */
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__u64 total_bytes; /* out */
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__u64 unused[379]; /* pad to 4k */
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__u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
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};
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/*
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* Retrieve information about the filesystem
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*/
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/* Request information about checksum type and size */
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#define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0)
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/* Request information about filesystem generation */
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#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1)
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/* Request information about filesystem metadata UUID */
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#define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2)
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struct btrfs_ioctl_fs_info_args {
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__u64 max_id; /* out */
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__u64 num_devices; /* out */
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__u8 fsid[BTRFS_FSID_SIZE]; /* out */
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__u32 nodesize; /* out */
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__u32 sectorsize; /* out */
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__u32 clone_alignment; /* out */
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/* See BTRFS_FS_INFO_FLAG_* */
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__u16 csum_type; /* out */
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__u16 csum_size; /* out */
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__u64 flags; /* in/out */
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__u64 generation; /* out */
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__u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */
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__u8 reserved[944]; /* pad to 1k */
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};
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/*
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* feature flags
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*
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* Used by:
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* struct btrfs_ioctl_feature_flags
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*/
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#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0)
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/*
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* Older kernels (< 4.9) on big-endian systems produced broken free space tree
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* bitmaps, and btrfs-progs also used to corrupt the free space tree (versions
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* < 4.7.3). If this bit is clear, then the free space tree cannot be trusted.
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* btrfs-progs can also intentionally clear this bit to ask the kernel to
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* rebuild the free space tree, however this might not work on older kernels
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* that do not know about this bit. If not sure, clear the cache manually on
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* first mount when booting older kernel versions.
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*/
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#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1)
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#define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2)
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#define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)
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#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)
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#define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2)
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#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3)
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#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4)
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/*
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* older kernels tried to do bigger metadata blocks, but the
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* code was pretty buggy. Lets not let them try anymore.
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*/
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#define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5)
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#define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6)
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#define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7)
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#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8)
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#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9)
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#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)
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#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
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#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)
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#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)
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struct btrfs_ioctl_feature_flags {
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__u64 compat_flags;
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__u64 compat_ro_flags;
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__u64 incompat_flags;
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};
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/* balance control ioctl modes */
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#define BTRFS_BALANCE_CTL_PAUSE 1
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#define BTRFS_BALANCE_CTL_CANCEL 2
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/*
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* this is packed, because it should be exactly the same as its disk
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* byte order counterpart (struct btrfs_disk_balance_args)
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*/
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struct btrfs_balance_args {
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__u64 profiles;
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union {
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__u64 usage;
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struct {
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__u32 usage_min;
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__u32 usage_max;
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};
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};
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__u64 devid;
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__u64 pstart;
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__u64 pend;
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__u64 vstart;
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__u64 vend;
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__u64 target;
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__u64 flags;
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/*
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* BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
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* BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
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* and maximum
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*/
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union {
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__u64 limit; /* limit number of processed chunks */
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struct {
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__u32 limit_min;
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__u32 limit_max;
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};
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};
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/*
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* Process chunks that cross stripes_min..stripes_max devices,
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* BTRFS_BALANCE_ARGS_STRIPES_RANGE
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*/
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__u32 stripes_min;
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__u32 stripes_max;
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__u64 unused[6];
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} __attribute__ ((__packed__));
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/* report balance progress to userspace */
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struct btrfs_balance_progress {
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__u64 expected; /* estimated # of chunks that will be
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* relocated to fulfill the request */
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__u64 considered; /* # of chunks we have considered so far */
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__u64 completed; /* # of chunks relocated so far */
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};
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/*
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* flags definition for balance
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*
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* Restriper's general type filter
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*
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* Used by:
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* btrfs_ioctl_balance_args.flags
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* btrfs_balance_control.flags (internal)
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*/
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#define BTRFS_BALANCE_DATA (1ULL << 0)
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#define BTRFS_BALANCE_SYSTEM (1ULL << 1)
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#define BTRFS_BALANCE_METADATA (1ULL << 2)
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#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \
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BTRFS_BALANCE_SYSTEM | \
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BTRFS_BALANCE_METADATA)
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#define BTRFS_BALANCE_FORCE (1ULL << 3)
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#define BTRFS_BALANCE_RESUME (1ULL << 4)
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/*
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* flags definitions for per-type balance args
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*
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* Balance filters
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*
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* Used by:
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* struct btrfs_balance_args
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*/
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#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0)
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#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1)
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#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2)
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#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3)
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#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4)
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#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5)
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#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6)
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#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)
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#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10)
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#define BTRFS_BALANCE_ARGS_MASK \
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(BTRFS_BALANCE_ARGS_PROFILES | \
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BTRFS_BALANCE_ARGS_USAGE | \
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BTRFS_BALANCE_ARGS_DEVID | \
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BTRFS_BALANCE_ARGS_DRANGE | \
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BTRFS_BALANCE_ARGS_VRANGE | \
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BTRFS_BALANCE_ARGS_LIMIT | \
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BTRFS_BALANCE_ARGS_LIMIT_RANGE | \
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BTRFS_BALANCE_ARGS_STRIPES_RANGE | \
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BTRFS_BALANCE_ARGS_USAGE_RANGE)
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/*
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* Profile changing flags. When SOFT is set we won't relocate chunk if
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* it already has the target profile (even though it may be
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* half-filled).
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*/
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#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8)
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#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9)
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/*
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* flags definition for balance state
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*
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* Used by:
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* struct btrfs_ioctl_balance_args.state
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*/
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#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
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#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
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#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
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struct btrfs_ioctl_balance_args {
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__u64 flags; /* in/out */
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__u64 state; /* out */
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struct btrfs_balance_args data; /* in/out */
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struct btrfs_balance_args meta; /* in/out */
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struct btrfs_balance_args sys; /* in/out */
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struct btrfs_balance_progress stat; /* out */
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__u64 unused[72]; /* pad to 1k */
|
|
};
|
|
|
|
#define BTRFS_INO_LOOKUP_PATH_MAX 4080
|
|
struct btrfs_ioctl_ino_lookup_args {
|
|
__u64 treeid;
|
|
__u64 objectid;
|
|
char name[BTRFS_INO_LOOKUP_PATH_MAX];
|
|
};
|
|
|
|
#define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1)
|
|
struct btrfs_ioctl_ino_lookup_user_args {
|
|
/* in, inode number containing the subvolume of 'subvolid' */
|
|
__u64 dirid;
|
|
/* in */
|
|
__u64 treeid;
|
|
/* out, name of the subvolume of 'treeid' */
|
|
char name[BTRFS_VOL_NAME_MAX + 1];
|
|
/*
|
|
* out, constructed path from the directory with which the ioctl is
|
|
* called to dirid
|
|
*/
|
|
char path[BTRFS_INO_LOOKUP_USER_PATH_MAX];
|
|
};
|
|
|
|
/* Search criteria for the btrfs SEARCH ioctl family. */
|
|
struct btrfs_ioctl_search_key {
|
|
/*
|
|
* The tree we're searching in. 1 is the tree of tree roots, 2 is the
|
|
* extent tree, etc...
|
|
*
|
|
* A special tree_id value of 0 will cause a search in the subvolume
|
|
* tree that the inode which is passed to the ioctl is part of.
|
|
*/
|
|
__u64 tree_id; /* in */
|
|
|
|
/*
|
|
* When doing a tree search, we're actually taking a slice from a
|
|
* linear search space of 136-bit keys.
|
|
*
|
|
* A full 136-bit tree key is composed as:
|
|
* (objectid << 72) + (type << 64) + offset
|
|
*
|
|
* The individual min and max values for objectid, type and offset
|
|
* define the min_key and max_key values for the search range. All
|
|
* metadata items with a key in the interval [min_key, max_key] will be
|
|
* returned.
|
|
*
|
|
* Additionally, we can filter the items returned on transaction id of
|
|
* the metadata block they're stored in by specifying a transid range.
|
|
* Be aware that this transaction id only denotes when the metadata
|
|
* page that currently contains the item got written the last time as
|
|
* result of a COW operation. The number does not have any meaning
|
|
* related to the transaction in which an individual item that is being
|
|
* returned was created or changed.
|
|
*/
|
|
__u64 min_objectid; /* in */
|
|
__u64 max_objectid; /* in */
|
|
__u64 min_offset; /* in */
|
|
__u64 max_offset; /* in */
|
|
__u64 min_transid; /* in */
|
|
__u64 max_transid; /* in */
|
|
__u32 min_type; /* in */
|
|
__u32 max_type; /* in */
|
|
|
|
/*
|
|
* input: The maximum amount of results desired.
|
|
* output: The actual amount of items returned, restricted by any of:
|
|
* - reaching the upper bound of the search range
|
|
* - reaching the input nr_items amount of items
|
|
* - completely filling the supplied memory buffer
|
|
*/
|
|
__u32 nr_items; /* in/out */
|
|
|
|
/* 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_search_args_v2 {
|
|
struct btrfs_ioctl_search_key key; /* in/out - search parameters */
|
|
__u64 buf_size; /* in - size of buffer
|
|
* out - on EOVERFLOW: needed size
|
|
* to store item */
|
|
__u64 buf[0]; /* out - found items */
|
|
};
|
|
|
|
struct btrfs_ioctl_clone_range_args {
|
|
__s64 src_fd;
|
|
__u64 src_offset, src_length;
|
|
__u64 dest_offset;
|
|
};
|
|
|
|
/*
|
|
* flags definition for the defrag range ioctl
|
|
*
|
|
* Used by:
|
|
* struct btrfs_ioctl_defrag_range_args.flags
|
|
*/
|
|
#define BTRFS_DEFRAG_RANGE_COMPRESS 1
|
|
#define BTRFS_DEFRAG_RANGE_START_IO 2
|
|
#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \
|
|
BTRFS_DEFRAG_RANGE_START_IO)
|
|
|
|
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;
|
|
|
|
/*
|
|
* which compression method to use if turning on compression
|
|
* for this defrag operation. If unspecified, zlib will
|
|
* be used
|
|
*/
|
|
__u32 compress_type;
|
|
|
|
/* spare for later */
|
|
__u32 unused[4];
|
|
};
|
|
|
|
|
|
#define BTRFS_SAME_DATA_DIFFERS 1
|
|
/* For extent-same ioctl */
|
|
struct btrfs_ioctl_same_extent_info {
|
|
__s64 fd; /* in - destination file */
|
|
__u64 logical_offset; /* in - start of extent in destination */
|
|
__u64 bytes_deduped; /* out - total # of bytes we were able
|
|
* to dedupe from this file */
|
|
/* status of this dedupe operation:
|
|
* 0 if dedup succeeds
|
|
* < 0 for error
|
|
* == BTRFS_SAME_DATA_DIFFERS if data differs
|
|
*/
|
|
__s32 status; /* out - see above description */
|
|
__u32 reserved;
|
|
};
|
|
|
|
struct btrfs_ioctl_same_args {
|
|
__u64 logical_offset; /* in - start of extent in source */
|
|
__u64 length; /* in - length of extent */
|
|
__u16 dest_count; /* in - total elements in info array */
|
|
__u16 reserved1;
|
|
__u32 reserved2;
|
|
struct btrfs_ioctl_same_extent_info info[0];
|
|
};
|
|
|
|
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];
|
|
};
|
|
|
|
struct btrfs_data_container {
|
|
__u32 bytes_left; /* out -- bytes not needed to deliver output */
|
|
__u32 bytes_missing; /* out -- additional bytes needed for result */
|
|
__u32 elem_cnt; /* out */
|
|
__u32 elem_missed; /* out */
|
|
__u64 val[0]; /* out */
|
|
};
|
|
|
|
struct btrfs_ioctl_ino_path_args {
|
|
__u64 inum; /* in */
|
|
__u64 size; /* in */
|
|
__u64 reserved[4];
|
|
/* struct btrfs_data_container *fspath; out */
|
|
__u64 fspath; /* out */
|
|
};
|
|
|
|
struct btrfs_ioctl_logical_ino_args {
|
|
__u64 logical; /* in */
|
|
__u64 size; /* in */
|
|
__u64 reserved[3]; /* must be 0 for now */
|
|
__u64 flags; /* in, v2 only */
|
|
/* struct btrfs_data_container *inodes; out */
|
|
__u64 inodes;
|
|
};
|
|
/* Return every ref to the extent, not just those containing logical block.
|
|
* Requires logical == extent bytenr. */
|
|
#define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0)
|
|
|
|
enum btrfs_dev_stat_values {
|
|
/* disk I/O failure stats */
|
|
BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
|
|
BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
|
|
BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
|
|
|
|
/* stats for indirect indications for I/O failures */
|
|
BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
|
|
* contents is illegal: this is an
|
|
* indication that the block was damaged
|
|
* during read or write, or written to
|
|
* wrong location or read from wrong
|
|
* location */
|
|
BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
|
|
* been written */
|
|
|
|
BTRFS_DEV_STAT_VALUES_MAX
|
|
};
|
|
|
|
/* Reset statistics after reading; needs SYS_ADMIN capability */
|
|
#define BTRFS_DEV_STATS_RESET (1ULL << 0)
|
|
|
|
struct btrfs_ioctl_get_dev_stats {
|
|
__u64 devid; /* in */
|
|
__u64 nr_items; /* in/out */
|
|
__u64 flags; /* in/out */
|
|
|
|
/* out values: */
|
|
__u64 values[BTRFS_DEV_STAT_VALUES_MAX];
|
|
|
|
/*
|
|
* This pads the struct to 1032 bytes. It was originally meant to pad to
|
|
* 1024 bytes, but when adding the flags field, the padding calculation
|
|
* was not adjusted.
|
|
*/
|
|
__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
|
|
};
|
|
|
|
#define BTRFS_QUOTA_CTL_ENABLE 1
|
|
#define BTRFS_QUOTA_CTL_DISABLE 2
|
|
#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
|
|
struct btrfs_ioctl_quota_ctl_args {
|
|
__u64 cmd;
|
|
__u64 status;
|
|
};
|
|
|
|
struct btrfs_ioctl_quota_rescan_args {
|
|
__u64 flags;
|
|
__u64 progress;
|
|
__u64 reserved[6];
|
|
};
|
|
|
|
struct btrfs_ioctl_qgroup_assign_args {
|
|
__u64 assign;
|
|
__u64 src;
|
|
__u64 dst;
|
|
};
|
|
|
|
struct btrfs_ioctl_qgroup_create_args {
|
|
__u64 create;
|
|
__u64 qgroupid;
|
|
};
|
|
struct btrfs_ioctl_timespec {
|
|
__u64 sec;
|
|
__u32 nsec;
|
|
};
|
|
|
|
struct btrfs_ioctl_received_subvol_args {
|
|
char uuid[BTRFS_UUID_SIZE]; /* in */
|
|
__u64 stransid; /* in */
|
|
__u64 rtransid; /* out */
|
|
struct btrfs_ioctl_timespec stime; /* in */
|
|
struct btrfs_ioctl_timespec rtime; /* out */
|
|
__u64 flags; /* in */
|
|
__u64 reserved[16]; /* in */
|
|
};
|
|
|
|
/*
|
|
* Caller doesn't want file data in the send stream, even if the
|
|
* search of clone sources doesn't find an extent. UPDATE_EXTENT
|
|
* commands will be sent instead of WRITE commands.
|
|
*/
|
|
#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
|
|
|
|
/*
|
|
* Do not add the leading stream header. Used when multiple snapshots
|
|
* are sent back to back.
|
|
*/
|
|
#define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
|
|
|
|
/*
|
|
* Omit the command at the end of the stream that indicated the end
|
|
* of the stream. This option is used when multiple snapshots are
|
|
* sent back to back.
|
|
*/
|
|
#define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
|
|
|
|
#define BTRFS_SEND_FLAG_MASK \
|
|
(BTRFS_SEND_FLAG_NO_FILE_DATA | \
|
|
BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
|
|
BTRFS_SEND_FLAG_OMIT_END_CMD)
|
|
|
|
struct btrfs_ioctl_send_args {
|
|
__s64 send_fd; /* in */
|
|
__u64 clone_sources_count; /* in */
|
|
__u64 __user *clone_sources; /* in */
|
|
__u64 parent_root; /* in */
|
|
__u64 flags; /* in */
|
|
__u64 reserved[4]; /* in */
|
|
};
|
|
|
|
/*
|
|
* Information about a fs tree root.
|
|
*
|
|
* All items are filled by the ioctl
|
|
*/
|
|
struct btrfs_ioctl_get_subvol_info_args {
|
|
/* Id of this subvolume */
|
|
__u64 treeid;
|
|
|
|
/* Name of this subvolume, used to get the real name at mount point */
|
|
char name[BTRFS_VOL_NAME_MAX + 1];
|
|
|
|
/*
|
|
* Id of the subvolume which contains this subvolume.
|
|
* Zero for top-level subvolume or a deleted subvolume.
|
|
*/
|
|
__u64 parent_id;
|
|
|
|
/*
|
|
* Inode number of the directory which contains this subvolume.
|
|
* Zero for top-level subvolume or a deleted subvolume
|
|
*/
|
|
__u64 dirid;
|
|
|
|
/* Latest transaction id of this subvolume */
|
|
__u64 generation;
|
|
|
|
/* Flags of this subvolume */
|
|
__u64 flags;
|
|
|
|
/* UUID of this subvolume */
|
|
__u8 uuid[BTRFS_UUID_SIZE];
|
|
|
|
/*
|
|
* UUID of the subvolume of which this subvolume is a snapshot.
|
|
* All zero for a non-snapshot subvolume.
|
|
*/
|
|
__u8 parent_uuid[BTRFS_UUID_SIZE];
|
|
|
|
/*
|
|
* UUID of the subvolume from which this subvolume was received.
|
|
* All zero for non-received subvolume.
|
|
*/
|
|
__u8 received_uuid[BTRFS_UUID_SIZE];
|
|
|
|
/* Transaction id indicating when change/create/send/receive happened */
|
|
__u64 ctransid;
|
|
__u64 otransid;
|
|
__u64 stransid;
|
|
__u64 rtransid;
|
|
/* Time corresponding to c/o/s/rtransid */
|
|
struct btrfs_ioctl_timespec ctime;
|
|
struct btrfs_ioctl_timespec otime;
|
|
struct btrfs_ioctl_timespec stime;
|
|
struct btrfs_ioctl_timespec rtime;
|
|
|
|
/* Must be zero */
|
|
__u64 reserved[8];
|
|
};
|
|
|
|
#define BTRFS_MAX_ROOTREF_BUFFER_NUM 255
|
|
struct btrfs_ioctl_get_subvol_rootref_args {
|
|
/* in/out, minimum id of rootref's treeid to be searched */
|
|
__u64 min_treeid;
|
|
|
|
/* out */
|
|
struct {
|
|
__u64 treeid;
|
|
__u64 dirid;
|
|
} rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM];
|
|
|
|
/* out, number of found items */
|
|
__u8 num_items;
|
|
__u8 align[7];
|
|
};
|
|
|
|
/* Error codes as returned by the kernel */
|
|
enum btrfs_err_code {
|
|
BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1,
|
|
BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
|
|
BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
|
|
BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
|
|
BTRFS_ERROR_DEV_TGT_REPLACE,
|
|
BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
|
|
BTRFS_ERROR_DEV_ONLY_WRITABLE,
|
|
BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS,
|
|
BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET,
|
|
BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET,
|
|
};
|
|
|
|
#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)
|
|
#define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \
|
|
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_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
|
|
struct btrfs_ioctl_search_args_v2)
|
|
#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)
|
|
#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
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struct btrfs_ioctl_vol_args_v2)
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#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
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#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
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#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
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struct btrfs_ioctl_scrub_args)
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#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
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#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
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struct btrfs_ioctl_scrub_args)
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#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
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struct btrfs_ioctl_dev_info_args)
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#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
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struct btrfs_ioctl_fs_info_args)
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#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
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struct btrfs_ioctl_balance_args)
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#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
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#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
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struct btrfs_ioctl_balance_args)
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#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
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struct btrfs_ioctl_ino_path_args)
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#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
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struct btrfs_ioctl_logical_ino_args)
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#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
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struct btrfs_ioctl_received_subvol_args)
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#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
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#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
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struct btrfs_ioctl_vol_args)
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#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
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struct btrfs_ioctl_quota_ctl_args)
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#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
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struct btrfs_ioctl_qgroup_assign_args)
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#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
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struct btrfs_ioctl_qgroup_create_args)
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#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
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struct btrfs_ioctl_qgroup_limit_args)
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#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
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struct btrfs_ioctl_quota_rescan_args)
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#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
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struct btrfs_ioctl_quota_rescan_args)
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#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
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#define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL
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#define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL
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#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
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struct btrfs_ioctl_get_dev_stats)
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#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
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struct btrfs_ioctl_dev_replace_args)
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#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
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struct btrfs_ioctl_same_args)
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#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
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struct btrfs_ioctl_feature_flags)
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#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
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struct btrfs_ioctl_feature_flags[2])
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#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
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struct btrfs_ioctl_feature_flags[3])
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#define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \
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struct btrfs_ioctl_vol_args_v2)
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#define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \
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struct btrfs_ioctl_logical_ino_args)
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#define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \
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struct btrfs_ioctl_get_subvol_info_args)
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#define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \
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struct btrfs_ioctl_get_subvol_rootref_args)
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#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
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struct btrfs_ioctl_ino_lookup_user_args)
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#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \
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struct btrfs_ioctl_vol_args_v2)
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#endif /* _UAPI_LINUX_BTRFS_H */
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