* Boston, MA 021110-1307, USA.
*/
-#ifndef __IOCTL_
-#define __IOCTL_
-#include <asm/types.h>
-#include <linux/ioctl.h>
-#include <time.h>
+#ifndef __BTRFS_IOCTL_H__
+#define __BTRFS_IOCTL_H__
#ifdef __cplusplus
extern "C" {
#endif
+#include <asm/types.h>
+#include <linux/ioctl.h>
+
+#ifndef __user
+#define __user
+#endif
+
#define BTRFS_IOCTL_MAGIC 0x94
#define BTRFS_VOL_NAME_MAX 255
#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)
};
#define BTRFS_SUBVOL_NAME_MAX 4039
-
struct btrfs_ioctl_vol_args_v2 {
__s64 fd;
__u64 transid;
union {
struct {
__u64 size;
- struct btrfs_qgroup_inherit *qgroup_inherit;
+ struct btrfs_qgroup_inherit __user *qgroup_inherit;
};
__u64 unused[4];
};
char name[BTRFS_SUBVOL_NAME_MAX + 1];
};
-#define BTRFS_FSID_SIZE 16
-#define BTRFS_UUID_SIZE 16
-
+/*
+ * 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;
- __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;
+ __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
#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_RESULT -1
#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
+#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3
struct btrfs_ioctl_dev_replace_args {
__u64 cmd; /* in */
__u64 result; /* out */
__u64 max_id; /* out */
__u64 num_devices; /* out */
__u8 fsid[BTRFS_FSID_SIZE]; /* out */
- __u64 reserved[124]; /* pad to 1k */
+ __u32 nodesize; /* out */
+ __u32 sectorsize; /* out */
+ __u32 clone_alignment; /* out */
+ __u32 reserved32;
+ __u64 reserved[122]; /* pad to 1k */
+};
+
+struct btrfs_ioctl_feature_flags {
+ __u64 compat_flags;
+ __u64 compat_ro_flags;
+ __u64 incompat_flags;
};
/* balance control ioctl modes */
__u64 flags;
- __u64 unused[8];
+ __u64 limit; /* limit number of processed chunks */
+ __u64 unused[7];
} __attribute__ ((__packed__));
+/* report balance progress to userspace */
struct btrfs_balance_progress {
- __u64 expected;
- __u64 considered;
- __u64 completed;
+ __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)
__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;
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];
+/*
+ * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes.
+ * The allocated size of the buffer is set in buf_size.
+ */
+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 */
+};
+
+/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
+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
+#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_defrag_range_args {
/* start of the defrag operation */
__u64 start;
__u64 inodes;
};
-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
-
-struct btrfs_ioctl_send_args {
- __s64 send_fd; /* in */
- __u64 clone_sources_count; /* in */
- __u64 *clone_sources; /* in */
- __u64 parent_root; /* in */
- __u64 flags; /* in */
- __u64 reserved[4]; /* in */
-};
-
enum btrfs_dev_stat_values {
/* disk I/O failure stats */
BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
__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 */
+};
/* Error codes as returned by the kernel */
enum btrfs_err_code {
case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
return "unable to go below four devices on raid10";
case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
- return "unable to go below three devices on raid5";
+ return "unable to go below two devices on raid5";
case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
- return "unable to go below four devices on raid6";
+ return "unable to go below three devices on raid6";
case BTRFS_ERROR_DEV_TGT_REPLACE:
return "unable to remove the dev_replace target dev";
case BTRFS_ERROR_DEV_MISSING_NOT_FOUND:
struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
struct btrfs_ioctl_vol_args)
-
-/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
-struct btrfs_ioctl_clone_range_args {
- __s64 src_fd;
- __u64 src_offset, src_length;
- __u64 dest_offset;
-};
-
/* trans start and trans end are dangerous, and only for
* use by applications that know how to avoid the
* resulting deadlocks
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_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_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)
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_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
- struct btrfs_ioctl_vol_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_get_dev_stats)
#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
struct btrfs_ioctl_dev_replace_args)
+#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
+ struct btrfs_ioctl_same_args)
#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
struct btrfs_ioctl_feature_flags)
#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
projects / platform / upstream / btrfs-progs.git / blobdiff