| /* |
| * 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 <asm/types.h> |
| #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_RDONLY (1ULL << 1) |
| #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_FSID_SIZE 16 |
| #define BTRFS_UUID_SIZE 16 |
| |
| struct btrfs_scrub_progress { |
| __u64 data_extents_scrubbed; |
| __u64 tree_extents_scrubbed; |
| __u64 data_bytes_scrubbed; |
| __u64 tree_bytes_scrubbed; |
| __u64 read_errors; |
| __u64 csum_errors; |
| __u64 verify_errors; |
| __u64 no_csum; |
| __u64 csum_discards; |
| __u64 super_errors; |
| __u64 malloc_errors; |
| __u64 uncorrectable_errors; |
| __u64 corrected_errors; |
| __u64 last_physical; |
| __u64 unverified_errors; |
| }; |
| |
| #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 */ |
| }; |
| |
| 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; |
| } __attribute__((may_alias)); |
| |
| #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]; |
| }; |
| |
| #define BTRFS_INO_LOOKUP_PATH_MAX 4080 |
| struct btrfs_ioctl_ino_lookup_args { |
| __u64 treeid; |
| __u64 objectid; |
| char name[BTRFS_INO_LOOKUP_PATH_MAX]; |
| }; |
| |
| /* 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; |
| |
| /* |
| * 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]; |
| }; |
| |
| 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[4]; |
| /* struct btrfs_data_container *inodes; out */ |
| __u64 inodes; |
| }; |
| |
| /* BTRFS_IOC_SNAP_CREATE is no longer used by the btrfs command */ |
| #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) |
| /* 13 is for CLONE_RANGE */ |
| #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_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ |
| struct btrfs_ioctl_vol_args_v2) |
| #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 |