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As with r352446 align blocks in boot1.efi

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We need to ensure the buffers are aligned before passing them to ReadBlocks.
Assume 512 bytes is enough for now.

Reviewed by:	imp
MFC after:	1 month
Sponsored by:	Innovate UK
This commit is contained in:
Andrew Turner 2020-05-05 09:42:26 +00:00
parent 3973ef1dfc
commit 3d5e12ebce
1 changed files with 5 additions and 5 deletions
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10
stand/efi/boot1/ufs_module.c
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@ -73,12 +73,12 @@ dskread(void *buf, uint64_t lba, int nblk)
#include "ufsread.c"
static struct dmadat __dmadat;
static struct dmadat __dmadat __aligned(512);
static char ufs_buffer[BSD_LABEL_BUFFER] __aligned(512);
static int
init_dev(dev_info_t* dev)
{
char buffer[BSD_LABEL_BUFFER];
struct disklabel *dl;
uint64_t bs;
int ok;
@ -109,14 +109,14 @@ init_dev(dev_info_t* dev)
* will retry fsread(0) only if there's a label found with a non-zero
* offset.
*/
if (dskread(buffer, 0, BSD_LABEL_BUFFER / DEV_BSIZE) != 0)
if (dskread(ufs_buffer, 0, BSD_LABEL_BUFFER / DEV_BSIZE) != 0)
return (-1);
dl = NULL;
bs = devinfo->dev->Media->BlockSize;
if (bs != 0 && bs <= BSD_LABEL_BUFFER / 2)
dl = (struct disklabel *)&buffer[bs];
dl = (struct disklabel *)&ufs_buffer[bs];
if (dl == NULL || dl->d_magic != BSD_MAGIC || dl->d_magic2 != BSD_MAGIC)
dl = (struct disklabel *)&buffer[BSD_LABEL_OFFSET];
dl = (struct disklabel *)&ufs_buffer[BSD_LABEL_OFFSET];
if (dl->d_magic != BSD_MAGIC || dl->d_magic2 != BSD_MAGIC ||
dl->d_partitions[0].p_offset == 0)
return (-1);