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vvfat: Replace bdrv_{read,write}() with bdrv_{pread,pwrite}()

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There's only a couple of bdrv_read() and bdrv_write() calls left in
the vvfat code, and they can be trivially replaced with the byte-based
bdrv_pread() and bdrv_pwrite().

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2019-05-01 21:13:57 +03:00 committed by Kevin Wolf
parent d4f189713f
commit e5a0a6784a
1 changed files with 7 additions and 5 deletions
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12
block/vvfat.c
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@ -1494,8 +1494,8 @@ static int vvfat_read(BlockDriverState *bs, int64_t sector_num,
DLOG(fprintf(stderr, "sectors %" PRId64 "+%" PRId64
" allocated\n", sector_num,
n >> BDRV_SECTOR_BITS));
if (bdrv_read(s->qcow, sector_num, buf + i * 0x200,
n >> BDRV_SECTOR_BITS)) {
if (bdrv_pread(s->qcow, sector_num * BDRV_SECTOR_SIZE,
buf + i * 0x200, n) < 0) {
return -1;
}
i += (n >> BDRV_SECTOR_BITS) - 1;
@ -1983,8 +1983,9 @@ static uint32_t get_cluster_count_for_direntry(BDRVVVFATState* s,
if (res) {
return -1;
}
res = bdrv_write(s->qcow, offset, s->cluster_buffer, 1);
if (res) {
res = bdrv_pwrite(s->qcow, offset * BDRV_SECTOR_SIZE,
s->cluster_buffer, BDRV_SECTOR_SIZE);
if (res < 0) {
return -2;
}
}
@ -3050,7 +3051,8 @@ DLOG(checkpoint());
* Use qcow backend. Commit later.
*/
DLOG(fprintf(stderr, "Write to qcow backend: %d + %d\n", (int)sector_num, nb_sectors));
ret = bdrv_write(s->qcow, sector_num, buf, nb_sectors);
ret = bdrv_pwrite(s->qcow, sector_num * BDRV_SECTOR_SIZE, buf,
nb_sectors * BDRV_SECTOR_SIZE);
if (ret < 0) {
fprintf(stderr, "Error writing to qcow backend\n");
return ret;