diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 68 |
1 files changed, 35 insertions, 33 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 56ad808f6b..bacc4f2e11 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -104,7 +104,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, printf("attempting to read extended header in offset %lu\n", offset); #endif - ret = bdrv_pread(bs->file, offset, &ext, sizeof(ext)); + ret = bdrv_pread(bs->file->bs, offset, &ext, sizeof(ext)); if (ret < 0) { error_setg_errno(errp, -ret, "qcow2_read_extension: ERROR: " "pread fail from offset %" PRIu64, offset); @@ -132,7 +132,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, sizeof(bs->backing_format)); return 2; } - ret = bdrv_pread(bs->file, offset, bs->backing_format, ext.len); + ret = bdrv_pread(bs->file->bs, offset, bs->backing_format, ext.len); if (ret < 0) { error_setg_errno(errp, -ret, "ERROR: ext_backing_format: " "Could not read format name"); @@ -148,7 +148,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, case QCOW2_EXT_MAGIC_FEATURE_TABLE: if (p_feature_table != NULL) { void* feature_table = g_malloc0(ext.len + 2 * sizeof(Qcow2Feature)); - ret = bdrv_pread(bs->file, offset , feature_table, ext.len); + ret = bdrv_pread(bs->file->bs, offset , feature_table, ext.len); if (ret < 0) { error_setg_errno(errp, -ret, "ERROR: ext_feature_table: " "Could not read table"); @@ -169,7 +169,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, uext->len = ext.len; QLIST_INSERT_HEAD(&s->unknown_header_ext, uext, next); - ret = bdrv_pread(bs->file, offset , uext->data, uext->len); + ret = bdrv_pread(bs->file->bs, offset , uext->data, uext->len); if (ret < 0) { error_setg_errno(errp, -ret, "ERROR: unknown extension: " "Could not read data"); @@ -260,12 +260,12 @@ int qcow2_mark_dirty(BlockDriverState *bs) } val = cpu_to_be64(s->incompatible_features | QCOW2_INCOMPAT_DIRTY); - ret = bdrv_pwrite(bs->file, offsetof(QCowHeader, incompatible_features), + ret = bdrv_pwrite(bs->file->bs, offsetof(QCowHeader, incompatible_features), &val, sizeof(val)); if (ret < 0) { return ret; } - ret = bdrv_flush(bs->file); + ret = bdrv_flush(bs->file->bs); if (ret < 0) { return ret; } @@ -828,7 +828,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, uint64_t ext_end; uint64_t l1_vm_state_index; - ret = bdrv_pread(bs->file, 0, &header, sizeof(header)); + ret = bdrv_pread(bs->file->bs, 0, &header, sizeof(header)); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read qcow2 header"); goto fail; @@ -903,7 +903,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, if (header.header_length > sizeof(header)) { s->unknown_header_fields_size = header.header_length - sizeof(header); s->unknown_header_fields = g_malloc(s->unknown_header_fields_size); - ret = bdrv_pread(bs->file, sizeof(header), s->unknown_header_fields, + ret = bdrv_pread(bs->file->bs, sizeof(header), s->unknown_header_fields, s->unknown_header_fields_size); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read unknown qcow2 header " @@ -1056,14 +1056,14 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, if (s->l1_size > 0) { - s->l1_table = qemu_try_blockalign(bs->file, + s->l1_table = qemu_try_blockalign(bs->file->bs, align_offset(s->l1_size * sizeof(uint64_t), 512)); if (s->l1_table == NULL) { error_setg(errp, "Could not allocate L1 table"); ret = -ENOMEM; goto fail; } - ret = bdrv_pread(bs->file, s->l1_table_offset, s->l1_table, + ret = bdrv_pread(bs->file->bs, s->l1_table_offset, s->l1_table, s->l1_size * sizeof(uint64_t)); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read L1 table"); @@ -1082,7 +1082,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, s->cluster_cache = g_malloc(s->cluster_size); /* one more sector for decompressed data alignment */ - s->cluster_data = qemu_try_blockalign(bs->file, QCOW_MAX_CRYPT_CLUSTERS + s->cluster_data = qemu_try_blockalign(bs->file->bs, QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size + 512); if (s->cluster_data == NULL) { error_setg(errp, "Could not allocate temporary cluster buffer"); @@ -1119,7 +1119,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, ret = -EINVAL; goto fail; } - ret = bdrv_pread(bs->file, header.backing_file_offset, + ret = bdrv_pread(bs->file->bs, header.backing_file_offset, bs->backing_file, len); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read backing file name"); @@ -1369,9 +1369,9 @@ static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num, switch (ret) { case QCOW2_CLUSTER_UNALLOCATED: - if (bs->backing_hd) { + if (bs->backing) { /* read from the base image */ - n1 = qcow2_backing_read1(bs->backing_hd, &hd_qiov, + n1 = qcow2_backing_read1(bs->backing->bs, &hd_qiov, sector_num, cur_nr_sectors); if (n1 > 0) { QEMUIOVector local_qiov; @@ -1382,7 +1382,7 @@ static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num, BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); qemu_co_mutex_unlock(&s->lock); - ret = bdrv_co_readv(bs->backing_hd, sector_num, + ret = bdrv_co_readv(bs->backing->bs, sector_num, n1, &local_qiov); qemu_co_mutex_lock(&s->lock); @@ -1429,8 +1429,9 @@ static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num, */ if (!cluster_data) { cluster_data = - qemu_try_blockalign(bs->file, QCOW_MAX_CRYPT_CLUSTERS - * s->cluster_size); + qemu_try_blockalign(bs->file->bs, + QCOW_MAX_CRYPT_CLUSTERS + * s->cluster_size); if (cluster_data == NULL) { ret = -ENOMEM; goto fail; @@ -1446,7 +1447,7 @@ static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num, BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO); qemu_co_mutex_unlock(&s->lock); - ret = bdrv_co_readv(bs->file, + ret = bdrv_co_readv(bs->file->bs, (cluster_offset >> 9) + index_in_cluster, cur_nr_sectors, &hd_qiov); qemu_co_mutex_lock(&s->lock); @@ -1543,7 +1544,7 @@ static coroutine_fn int qcow2_co_writev(BlockDriverState *bs, Error *err = NULL; assert(s->cipher); if (!cluster_data) { - cluster_data = qemu_try_blockalign(bs->file, + cluster_data = qemu_try_blockalign(bs->file->bs, QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size); if (cluster_data == NULL) { @@ -1580,7 +1581,7 @@ static coroutine_fn int qcow2_co_writev(BlockDriverState *bs, BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO); trace_qcow2_writev_data(qemu_coroutine_self(), (cluster_offset >> 9) + index_in_cluster); - ret = bdrv_co_writev(bs->file, + ret = bdrv_co_writev(bs->file->bs, (cluster_offset >> 9) + index_in_cluster, cur_nr_sectors, &hd_qiov); qemu_co_mutex_lock(&s->lock); @@ -1703,7 +1704,7 @@ static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp) qcow2_close(bs); - bdrv_invalidate_cache(bs->file, &local_err); + bdrv_invalidate_cache(bs->file->bs, &local_err); if (local_err) { error_propagate(errp, local_err); return; @@ -1911,7 +1912,7 @@ int qcow2_update_header(BlockDriverState *bs) } /* Write the new header */ - ret = bdrv_pwrite(bs->file, 0, header, s->cluster_size); + ret = bdrv_pwrite(bs->file->bs, 0, header, s->cluster_size); if (ret < 0) { goto fail; } @@ -1991,7 +1992,8 @@ static int preallocate(BlockDriverState *bs) if (host_offset != 0) { uint8_t buf[BDRV_SECTOR_SIZE]; memset(buf, 0, BDRV_SECTOR_SIZE); - ret = bdrv_write(bs->file, (host_offset >> BDRV_SECTOR_BITS) + num - 1, + ret = bdrv_write(bs->file->bs, + (host_offset >> BDRV_SECTOR_BITS) + num - 1, buf, 1); if (ret < 0) { return ret; @@ -2403,7 +2405,7 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset) /* write updated header.size */ offset = cpu_to_be64(offset); - ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, size), + ret = bdrv_pwrite_sync(bs->file->bs, offsetof(QCowHeader, size), &offset, sizeof(uint64_t)); if (ret < 0) { return ret; @@ -2427,8 +2429,8 @@ static int qcow2_write_compressed(BlockDriverState *bs, int64_t sector_num, if (nb_sectors == 0) { /* align end of file to a sector boundary to ease reading with sector based I/Os */ - cluster_offset = bdrv_getlength(bs->file); - return bdrv_truncate(bs->file, cluster_offset); + cluster_offset = bdrv_getlength(bs->file->bs); + return bdrv_truncate(bs->file->bs, cluster_offset); } if (nb_sectors != s->cluster_sectors) { @@ -2495,7 +2497,7 @@ static int qcow2_write_compressed(BlockDriverState *bs, int64_t sector_num, } BLKDBG_EVENT(bs->file, BLKDBG_WRITE_COMPRESSED); - ret = bdrv_pwrite(bs->file, cluster_offset, out_buf, out_len); + ret = bdrv_pwrite(bs->file->bs, cluster_offset, out_buf, out_len); if (ret < 0) { goto fail; } @@ -2544,7 +2546,7 @@ static int make_completely_empty(BlockDriverState *bs) /* After this call, neither the in-memory nor the on-disk refcount * information accurately describe the actual references */ - ret = bdrv_write_zeroes(bs->file, s->l1_table_offset / BDRV_SECTOR_SIZE, + ret = bdrv_write_zeroes(bs->file->bs, s->l1_table_offset / BDRV_SECTOR_SIZE, l1_clusters * s->cluster_sectors, 0); if (ret < 0) { goto fail_broken_refcounts; @@ -2558,7 +2560,7 @@ static int make_completely_empty(BlockDriverState *bs) * overwrite parts of the existing refcount and L1 table, which is not * an issue because the dirty flag is set, complete data loss is in fact * desired and partial data loss is consequently fine as well */ - ret = bdrv_write_zeroes(bs->file, s->cluster_size / BDRV_SECTOR_SIZE, + ret = bdrv_write_zeroes(bs->file->bs, s->cluster_size / BDRV_SECTOR_SIZE, (2 + l1_clusters) * s->cluster_size / BDRV_SECTOR_SIZE, 0); /* This call (even if it failed overall) may have overwritten on-disk @@ -2578,7 +2580,7 @@ static int make_completely_empty(BlockDriverState *bs) cpu_to_be64w(&l1_ofs_rt_ofs_cls.l1_offset, 3 * s->cluster_size); cpu_to_be64w(&l1_ofs_rt_ofs_cls.reftable_offset, s->cluster_size); cpu_to_be32w(&l1_ofs_rt_ofs_cls.reftable_clusters, 1); - ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_table_offset), + ret = bdrv_pwrite_sync(bs->file->bs, offsetof(QCowHeader, l1_table_offset), &l1_ofs_rt_ofs_cls, sizeof(l1_ofs_rt_ofs_cls)); if (ret < 0) { goto fail_broken_refcounts; @@ -2609,7 +2611,7 @@ static int make_completely_empty(BlockDriverState *bs) /* Enter the first refblock into the reftable */ rt_entry = cpu_to_be64(2 * s->cluster_size); - ret = bdrv_pwrite_sync(bs->file, s->cluster_size, + ret = bdrv_pwrite_sync(bs->file->bs, s->cluster_size, &rt_entry, sizeof(rt_entry)); if (ret < 0) { goto fail_broken_refcounts; @@ -2634,7 +2636,7 @@ static int make_completely_empty(BlockDriverState *bs) goto fail; } - ret = bdrv_truncate(bs->file, (3 + l1_clusters) * s->cluster_size); + ret = bdrv_truncate(bs->file->bs, (3 + l1_clusters) * s->cluster_size); if (ret < 0) { goto fail; } @@ -2769,7 +2771,7 @@ static void dump_refcounts(BlockDriverState *bs) int64_t nb_clusters, k, k1, size; int refcount; - size = bdrv_getlength(bs->file); + size = bdrv_getlength(bs->file->bs); nb_clusters = size_to_clusters(s, size); for(k = 0; k < nb_clusters;) { k1 = k; |