diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 34 |
1 files changed, 18 insertions, 16 deletions
@@ -717,6 +717,7 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, uint8_t tmp_buf[BDRV_SECTOR_SIZE]; int len, nb_sectors, count; int64_t sector_num; + int ret; count = count1; /* first read to align to sector start */ @@ -725,8 +726,8 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, len = count; sector_num = offset >> BDRV_SECTOR_BITS; if (len > 0) { - if (bdrv_read(bs, sector_num, tmp_buf, 1) < 0) - return -EIO; + if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0) + return ret; memcpy(buf, tmp_buf + (offset & (BDRV_SECTOR_SIZE - 1)), len); count -= len; if (count == 0) @@ -738,8 +739,8 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, /* read the sectors "in place" */ nb_sectors = count >> BDRV_SECTOR_BITS; if (nb_sectors > 0) { - if (bdrv_read(bs, sector_num, buf, nb_sectors) < 0) - return -EIO; + if ((ret = bdrv_read(bs, sector_num, buf, nb_sectors)) < 0) + return ret; sector_num += nb_sectors; len = nb_sectors << BDRV_SECTOR_BITS; buf += len; @@ -748,8 +749,8 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, /* add data from the last sector */ if (count > 0) { - if (bdrv_read(bs, sector_num, tmp_buf, 1) < 0) - return -EIO; + if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0) + return ret; memcpy(buf, tmp_buf, count); } return count1; @@ -761,6 +762,7 @@ int bdrv_pwrite(BlockDriverState *bs, int64_t offset, uint8_t tmp_buf[BDRV_SECTOR_SIZE]; int len, nb_sectors, count; int64_t sector_num; + int ret; count = count1; /* first write to align to sector start */ @@ -769,11 +771,11 @@ int bdrv_pwrite(BlockDriverState *bs, int64_t offset, len = count; sector_num = offset >> BDRV_SECTOR_BITS; if (len > 0) { - if (bdrv_read(bs, sector_num, tmp_buf, 1) < 0) - return -EIO; + if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0) + return ret; memcpy(tmp_buf + (offset & (BDRV_SECTOR_SIZE - 1)), buf, len); - if (bdrv_write(bs, sector_num, tmp_buf, 1) < 0) - return -EIO; + if ((ret = bdrv_write(bs, sector_num, tmp_buf, 1)) < 0) + return ret; count -= len; if (count == 0) return count1; @@ -784,8 +786,8 @@ int bdrv_pwrite(BlockDriverState *bs, int64_t offset, /* write the sectors "in place" */ nb_sectors = count >> BDRV_SECTOR_BITS; if (nb_sectors > 0) { - if (bdrv_write(bs, sector_num, buf, nb_sectors) < 0) - return -EIO; + if ((ret = bdrv_write(bs, sector_num, buf, nb_sectors)) < 0) + return ret; sector_num += nb_sectors; len = nb_sectors << BDRV_SECTOR_BITS; buf += len; @@ -794,11 +796,11 @@ int bdrv_pwrite(BlockDriverState *bs, int64_t offset, /* add data from the last sector */ if (count > 0) { - if (bdrv_read(bs, sector_num, tmp_buf, 1) < 0) - return -EIO; + if ((ret = bdrv_read(bs, sector_num, tmp_buf, 1)) < 0) + return ret; memcpy(tmp_buf, buf, count); - if (bdrv_write(bs, sector_num, tmp_buf, 1) < 0) - return -EIO; + if ((ret = bdrv_write(bs, sector_num, tmp_buf, 1)) < 0) + return ret; } return count1; } |