• Eric Sandeen's avatar
    [XFS] convert xfs_getbmap to take formatter functions · 8a7141a8
    Eric Sandeen authored
    Preliminary work to hook up fiemap, this allows us to pass in an
    arbitrary formatter to copy extent data back to userspace.
    
    The formatter takes info for 1 extent, a pointer to the user "thing*"
    and a pointer to a "filled" variable to indicate whether a userspace
    buffer did get filled in (for fiemap, hole "extents" are skipped).
    
    I'm just using the getbmapx struct as a "common denominator" because
    as far as I can see, it holds all info that any formatters will care
    about.
    
    ("*thing" because fiemap doesn't pass the user pointer around, but rather
    has a pointer to a fiemap info structure, and helpers associated with it)
    Signed-off-by: default avatarEric Sandeen <sandeen@sandeen.net>
    Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
    Signed-off-by: default avatarNiv Sardi <xaiki@sgi.com>
    8a7141a8
xfs_ioctl.c 35 KB