Teach xfs_getbmapx how to report shared extents and CoW fork contents, then modify the FIEMAP formatters to set the appropriate flags. A previous version of this patch only modified the fiemap formatter, which is insufficient. Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- libxfs/xfs_fs.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h index f291a53..bb70066 100644 --- a/libxfs/xfs_fs.h +++ b/libxfs/xfs_fs.h @@ -105,14 +105,16 @@ struct getbmapx { #define BMV_IF_PREALLOC 0x4 /* rtn status BMV_OF_PREALLOC if req */ #define BMV_IF_DELALLOC 0x8 /* rtn status BMV_OF_DELALLOC if req */ #define BMV_IF_NO_HOLES 0x10 /* Do not return holes */ +#define BMV_IF_COWFORK 0x20 /* return CoW fork rather than data */ #define BMV_IF_VALID \ (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC| \ - BMV_IF_DELALLOC|BMV_IF_NO_HOLES) + BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK) /* bmv_oflags values - returned for each non-header segment */ #define BMV_OF_PREALLOC 0x1 /* segment = unwritten pre-allocation */ #define BMV_OF_DELALLOC 0x2 /* segment = delayed allocation */ #define BMV_OF_LAST 0x4 /* segment is the last in the file */ +#define BMV_OF_SHARED 0x8 /* segment shared with another file */ /* * Structure for XFS_IOC_FSSETDM. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs