![Chris Mason](/assets/img/avatar_default.png)
The new ioctls to follow backrefs are not clean for 32/64 bit compat. This reworks them for u64s everywhere. They are brand new, so there are no problems with changing the interface now. Signed-off-by: Chris Mason <chris.mason@oracle.com>
281 lines
8.7 KiB
C
281 lines
8.7 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_RDONLY (1ULL << 1)
|
|
#define BTRFS_FSID_SIZE 16
|
|
#define BTRFS_UUID_SIZE 16
|
|
|
|
#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];
|
|
};
|
|
|
|
/*
|
|
* structure to report errors and progress to userspace, either as a
|
|
* result of a finished scrub, a canceled scrub or a progress inquiry
|
|
*/
|
|
struct btrfs_scrub_progress {
|
|
__u64 data_extents_scrubbed; /* # of data extents scrubbed */
|
|
__u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
|
|
__u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
|
|
__u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
|
|
__u64 read_errors; /* # of read errors encountered (EIO) */
|
|
__u64 csum_errors; /* # of failed csum checks */
|
|
__u64 verify_errors; /* # of occurences, where the metadata
|
|
* of a tree block did not match the
|
|
* expected values, like generation or
|
|
* logical */
|
|
__u64 no_csum; /* # of 4k data block for which no csum
|
|
* is present, probably the result of
|
|
* data written with nodatasum */
|
|
__u64 csum_discards; /* # of csum for which no data was found
|
|
* in the extent tree. */
|
|
__u64 super_errors; /* # of bad super blocks encountered */
|
|
__u64 malloc_errors; /* # of internal kmalloc errors. These
|
|
* will likely cause an incomplete
|
|
* scrub */
|
|
__u64 uncorrectable_errors; /* # of errors where either no intact
|
|
* copy was found or the writeback
|
|
* failed */
|
|
__u64 corrected_errors; /* # of errors corrected */
|
|
__u64 last_physical; /* last physical address scrubbed. In
|
|
* case a scrub was aborted, this can
|
|
* be used to restart the scrub */
|
|
__u64 unverified_errors; /* # of occurences where a read for a
|
|
* full (64k) bio failed, but the re-
|
|
* check succeeded for each 4k piece.
|
|
* Intermittent error. */
|
|
};
|
|
|
|
#define BTRFS_SCRUB_READONLY 1
|
|
struct btrfs_ioctl_scrub_args {
|
|
__u64 devid; /* in */
|
|
__u64 start; /* in */
|
|
__u64 end; /* in */
|
|
__u64 flags; /* in */
|
|
struct btrfs_scrub_progress progress; /* out */
|
|
/* pad to 1k */
|
|
__u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
|
|
};
|
|
|
|
#define BTRFS_DEVICE_PATH_NAME_MAX 1024
|
|
struct btrfs_ioctl_dev_info_args {
|
|
__u64 devid; /* in/out */
|
|
__u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
|
|
__u64 bytes_used; /* out */
|
|
__u64 total_bytes; /* out */
|
|
__u64 unused[379]; /* pad to 4k */
|
|
__u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
|
|
};
|
|
|
|
struct btrfs_ioctl_fs_info_args {
|
|
__u64 max_id; /* out */
|
|
__u64 num_devices; /* out */
|
|
__u8 fsid[BTRFS_FSID_SIZE]; /* out */
|
|
__u64 reserved[124]; /* 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];
|
|
};
|
|
|
|
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_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 */
|
|
__u32 size; /* in */
|
|
__u64 reserved[4];
|
|
/* struct btrfs_data_container *fspath; out */
|
|
__u64 fspath; /* out */
|
|
};
|
|
|
|
struct btrfs_ioctl_logical_ino_args {
|
|
__u64 logical; /* in */
|
|
__u32 size; /* in */
|
|
__u64 reserved[4];
|
|
/* struct btrfs_data_container *inodes; out */
|
|
__u64 inodes;
|
|
};
|
|
|
|
#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)
|
|
#define BTRFS_IOC_SUBVOL_GETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 25, __u64)
|
|
#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
|
|
#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
|
|
struct btrfs_ioctl_scrub_args)
|
|
#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
|
|
#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
|
|
struct btrfs_ioctl_scrub_args)
|
|
#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
|
|
struct btrfs_ioctl_dev_info_args)
|
|
#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
|
|
struct btrfs_ioctl_fs_info_args)
|
|
#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
|
|
struct btrfs_ioctl_ino_path_args)
|
|
#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
|
|
struct btrfs_ioctl_ino_path_args)
|
|
|
|
#endif
|