Author: avg
Date: Thu Apr 15 08:39:56 2010
New Revision: 206650
URL: http://svn.freebsd.org/changeset/base/206650
Log:
g_io_check: respond to zero pp->mediasize with ENXIO
Previsouly this condition was reported with EIO by bio_offset > mediasize
check.
Perhaps that check should be extended to bio_offset+bio_length > mediasize.
MFC after: 1 week
Modified:
head/sys/geom/geom_io.c
Modified: head/sys/geom/geom_io.c
==============================================================================
--- head/sys/geom/geom_io.c Thu Apr 15 08:32:50 2010 (r206649)
+++ head/sys/geom/geom_io.c Thu Apr 15 08:39:56 2010 (r206650)
@@ -309,8 +309,8 @@ g_io_check(struct bio *bp)
case BIO_READ:
case BIO_WRITE:
case BIO_DELETE:
- /* Zero sectorsize is a probably lack of media */
- if (pp->sectorsize == 0)
+ /* Zero sectorsize or mediasize is probably a lack of media. */
+ if (pp->sectorsize == 0 || pp->mediasize == 0)
return (ENXIO);
/* Reject I/O not on sector boundary */
if (bp->bio_offset % pp->sectorsize)
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