block: Convert bs->file to BdrvChild
This patch removes the temporary duplication between bs->file and
bs->file_child by converting everything to BdrvChild.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/block/qcow2.c b/block/qcow2.c
index 56ad808..38b2797 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -104,7 +104,7 @@
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 @@
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 @@
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 @@
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 @@
}
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 @@
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 @@
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 @@
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 @@
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 @@
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");
@@ -1429,8 +1429,9 @@
*/
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 @@
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 @@
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 @@
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 @@
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 @@
}
/* 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 @@
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 @@
/* 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 @@
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 @@
}
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 @@
/* 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 @@
* 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 @@
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 @@
/* 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 @@
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 @@
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;
