From 5adf7070280aca29b617d10f4ab90803badae03e Mon Sep 17 00:00:00 2001 From: David Sterba Date: Wed, 3 Jun 2015 16:42:51 +0200 Subject: [PATCH] btrfs-progs: ioctl.h: add EXTENT_SAME ioctl and structures Copied from uapi/linux/btrfs.h. Signed-off-by: David Sterba --- ioctl.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/ioctl.h b/ioctl.h index df7933e..9ef833c 100644 --- a/ioctl.h +++ b/ioctl.h @@ -328,6 +328,31 @@ struct btrfs_ioctl_clone_range_args { #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; @@ -633,6 +658,8 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code) 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, \ -- 2.7.4