976     uint8_t tmp_buf[BDRV_SECTOR_SIZE];  in bdrv_pread()  local
988         if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0)  in bdrv_pread()
990         memcpy(buf, tmp_buf + (offset & (BDRV_SECTOR_SIZE - 1)), len);  in bdrv_pread()
1011         if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0)  in bdrv_pread()
1013         memcpy(buf, tmp_buf, count);  in bdrv_pread()
1021     uint8_t tmp_buf[BDRV_SECTOR_SIZE];  in bdrv_pwrite()  local
1033         if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0)  in bdrv_pwrite()
1035         memcpy(tmp_buf + (offset & (BDRV_SECTOR_SIZE - 1)), buf, len);  in bdrv_pwrite()
1036         if ((ret = bdrv_write(bs, sector_num, tmp_buf, 1)) < 0)  in bdrv_pwrite()
1058         if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0)  in bdrv_pwrite()
1060         memcpy(tmp_buf, buf, count);  in bdrv_pwrite()
1061         if ((ret = bdrv_write(bs, sector_num, tmp_buf, 1)) < 0)  in bdrv_pwrite()