diff options
Diffstat (limited to 'fs/btrfs/ioctl.h')
| -rw-r--r-- | fs/btrfs/ioctl.h | 502 |
1 files changed, 0 insertions, 502 deletions
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h deleted file mode 100644 index dabca9cc8c2..00000000000 --- a/fs/btrfs/ioctl.h +++ /dev/null @@ -1,502 +0,0 @@ -/* - * 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_DEVICE_PATH_NAME_MAX 1024 - -#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) -#define BTRFS_SUBVOL_RDONLY (1ULL << 1) -#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) -#define BTRFS_FSID_SIZE 16 -#define BTRFS_UUID_SIZE 16 - -#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) - -struct btrfs_qgroup_limit { - __u64 flags; - __u64 max_rfer; - __u64 max_excl; - __u64 rsv_rfer; - __u64 rsv_excl; -}; - -struct btrfs_qgroup_inherit { - __u64 flags; - __u64 num_qgroups; - __u64 num_ref_copies; - __u64 num_excl_copies; - struct btrfs_qgroup_limit lim; - __u64 qgroups[0]; -}; - -struct btrfs_ioctl_qgroup_limit_args { - __u64 qgroupid; - struct btrfs_qgroup_limit lim; -}; - -#define BTRFS_SUBVOL_NAME_MAX 4039 -struct btrfs_ioctl_vol_args_v2 { - __s64 fd; - __u64 transid; - __u64 flags; - union { - struct { - __u64 size; - struct btrfs_qgroup_inherit __user *qgroup_inherit; - }; - __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_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 -#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 -struct btrfs_ioctl_dev_replace_start_params { - __u64 srcdevid; /* in, if 0, use srcdev_name instead */ - __u64 cont_reading_from_srcdev_mode; /* in, see #define - * above */ - __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ - __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ -}; - -#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 -#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 -#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 -#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 -#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 -struct btrfs_ioctl_dev_replace_status_params { - __u64 replace_state; /* out, see #define above */ - __u64 progress_1000; /* out, 0 <= x <= 1000 */ - __u64 time_started; /* out, seconds since 1-Jan-1970 */ - __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ - __u64 num_write_errors; /* out */ - __u64 num_uncorrectable_read_errors; /* out */ -}; - -#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 -#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 -#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 -#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 -#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 -#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 -struct btrfs_ioctl_dev_replace_args { - __u64 cmd; /* in */ - __u64 result; /* out */ - - union { - struct btrfs_ioctl_dev_replace_start_params start; - struct btrfs_ioctl_dev_replace_status_params status; - }; /* in/out */ - - __u64 spare[64]; -}; - -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 */ -}; - -/* balance control ioctl modes */ -#define BTRFS_BALANCE_CTL_PAUSE 1 -#define BTRFS_BALANCE_CTL_CANCEL 2 - -/* - * this is packed, because it should be exactly the same as its disk - * byte order counterpart (struct btrfs_disk_balance_args) - */ -struct btrfs_balance_args { - __u64 profiles; - __u64 usage; - __u64 devid; - __u64 pstart; - __u64 pend; - __u64 vstart; - __u64 vend; - - __u64 target; - - __u64 flags; - - __u64 unused[8]; -} __attribute__ ((__packed__)); - -/* report balance progress to userspace */ -struct btrfs_balance_progress { - __u64 expected; /* estimated # of chunks that will be - * relocated to fulfill the request */ - __u64 considered; /* # of chunks we have considered so far */ - __u64 completed; /* # of chunks relocated so far */ -}; - -#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) -#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) -#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) - -struct btrfs_ioctl_balance_args { - __u64 flags; /* in/out */ - __u64 state; /* out */ - - struct btrfs_balance_args data; /* in/out */ - struct btrfs_balance_args meta; /* in/out */ - struct btrfs_balance_args sys; /* in/out */ - - struct btrfs_balance_progress stat; /* out */ - - __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]; -}; - -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 */ - __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; -}; - -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]; - - __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */ -}; - -#define BTRFS_QUOTA_CTL_ENABLE 1 -#define BTRFS_QUOTA_CTL_DISABLE 2 -#define BTRFS_QUOTA_CTL_RESCAN 3 -struct btrfs_ioctl_quota_ctl_args { - __u64 cmd; - __u64 status; -}; - -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 */ -}; - -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 */ -}; - -#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_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ - struct btrfs_ioctl_vol_args_v2) -#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(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_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ - struct btrfs_ioctl_balance_args) -#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) -#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ - struct btrfs_ioctl_balance_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) -#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ - struct btrfs_ioctl_received_subvol_args) -#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) -#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ - struct btrfs_ioctl_vol_args) -#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ - struct btrfs_ioctl_quota_ctl_args) -#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ - struct btrfs_ioctl_qgroup_assign_args) -#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ - struct btrfs_ioctl_qgroup_create_args) -#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ - struct btrfs_ioctl_qgroup_limit_args) -#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ - struct btrfs_ioctl_get_dev_stats) -#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ - struct btrfs_ioctl_dev_replace_args) - -#endif |