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[src/trunk]: src/sys/stand/efiboot Fix buffer size for alignment adjusted blo...
details: https://anonhg.NetBSD.org/src/rev/46f0e0af5677
branches: trunk
changeset: 379867:46f0e0af5677
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Wed Jun 23 20:55:50 2021 +0000
description:
Fix buffer size for alignment adjusted block I/O reads.
diffstat:
sys/stand/efiboot/efiblock.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diffs (20 lines):
diff -r 46337c5f172f -r 46f0e0af5677 sys/stand/efiboot/efiblock.c
--- a/sys/stand/efiboot/efiblock.c Wed Jun 23 20:20:44 2021 +0000
+++ b/sys/stand/efiboot/efiblock.c Wed Jun 23 20:55:50 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: efiblock.c,v 1.15 2021年06月22日 21:56:51 jmcneill Exp $ */
+/* $NetBSD: efiblock.c,v 1.16 2021年06月23日 20:55:50 jmcneill Exp $ */
/*-
* Copyright (c) 2016 Kimihiro Nonaka <nonaka%netbsd.org@localhost>
@@ -133,7 +133,9 @@ efi_block_do_read_blockio(struct efi_blo
blkbuf_offset = off % bdev->bio->Media->BlockSize;
blkbuf_size = (lba_end - lba_start) * bdev->bio->Media->BlockSize;
if (bdev->bio->Media->IoAlign > 1) {
- blkbuf_size += bdev->bio->Media->IoAlign - 1;
+ blkbuf_size = (blkbuf_size + bdev->bio-Media->IoAlign - 1) /
+ bdev->bio->Media->IoAlign *
+ bdev->bio->Media->IoAlign;
}
blkbuf = AllocatePool(blkbuf_size);
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