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Balk at unaligned requests.

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MFC candidate.
This commit is contained in:
Poul-Henning Kamp 2002-12-18 19:53:59 +00:00
parent 4c572f6222
commit 0ae8896ed2
1 changed files with 10 additions and 0 deletions
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10
sys/geom/geom_io.c
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@ -273,6 +273,16 @@ g_io_request(struct bio *bp, struct g_consumer *cp)
case BIO_READ:
case BIO_WRITE:
case BIO_DELETE:
/* Reject I/O not on sector boundary */
if (bp->bio_offset % bp->bio_to->sectorsize) {
g_io_deliver(bp, EINVAL);
return;
}
/* Reject I/O not integral sector long */
if (bp->bio_length % bp->bio_to->sectorsize) {
g_io_deliver(bp, EINVAL);
return;
}
/* Reject requests past the end of media. */
if (bp->bio_offset > bp->bio_to->mediasize) {
g_io_deliver(bp, EIO);