diff options
| -rw-r--r-- | block.c | 27 |
1 files changed, 14 insertions, 13 deletions
@@ -565,21 +565,22 @@ int bdrv_write(BlockDriverState *bs, int64_t sector_num, if (bs->read_only) return -EACCES; if (drv->bdrv_pwrite) { - int ret, len; + int ret, len, count = 0; len = nb_sectors * 512; - ret = drv->bdrv_pwrite(bs, sector_num * 512, buf, len); - if (ret < 0) - return ret; - else if (ret != len) - return -EIO; - else { - bs->wr_bytes += (unsigned) len; - bs->wr_ops ++; - return 0; - } - } else { - return drv->bdrv_write(bs, sector_num, buf, nb_sectors); + do { + ret = drv->bdrv_pwrite(bs, sector_num * 512, buf, len - count); + if (ret < 0) { + printf("bdrv_write ret=%d\n", ret); + return ret; + } + count += ret; + buf += ret; + } while (count != len); + bs->wr_bytes += (unsigned) len; + bs->wr_ops ++; + return 0; } + return drv->bdrv_write(bs, sector_num, buf, nb_sectors); } static int bdrv_pread_em(BlockDriverState *bs, int64_t offset, |