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vvfat: Fix size of temporary qcow file 

The size of the qcow size was calculated so that only the FAT partition
would fit on it, but not the whole disk. However, offsets relative to
the whole disk are used to access it, so increase its size to be large
enough for that.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211209151815.23495-1-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2021-12-09 16:18:15 +01:00
parent e2eec2819a
commit 2db9b9e96f
1 changed files with 3 additions and 4 deletions
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7
block/vvfat.c
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@ -1230,6 +1230,7 @@ static int vvfat_open(BlockDriverState *bs, QDict *options, int flags,
dirname, cyls, heads, secs));
s->sector_count = cyls * heads * secs - s->offset_to_bootsector;
bs->total_sectors = cyls * heads * secs;
if (qemu_opt_get_bool(opts, "rw", false)) {
if (!bdrv_is_read_only(bs)) {
@ -1250,8 +1251,6 @@ static int vvfat_open(BlockDriverState *bs, QDict *options, int flags,
}
}
bs->total_sectors = cyls * heads * secs;
if (init_directories(s, dirname, heads, secs, errp)) {
ret = -EIO;
goto fail;
@ -3147,8 +3146,8 @@ static int enable_write_target(BlockDriverState *bs, Error **errp)
}
opts = qemu_opts_create(bdrv_qcow->create_opts, NULL, 0, &error_abort);
qemu_opt_set_number(opts, BLOCK_OPT_SIZE, s->sector_count * 512,
&error_abort);
qemu_opt_set_number(opts, BLOCK_OPT_SIZE,
bs->total_sectors * BDRV_SECTOR_SIZE, &error_abort);
qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, "fat:", &error_abort);
ret = bdrv_create(bdrv_qcow, s->qcow_filename, opts, errp);