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qcow2: Pull check_refblocks() up 

Pull check_refblocks() before calculate_refcounts() so we can drop its
static declaration.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-10-22 14:09:32 +02:00 committed by Kevin Wolf
parent 78fb328e85
commit 057a3fe57e
1 changed files with 49 additions and 53 deletions
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102
block/qcow2-refcount.c
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@ -1535,59 +1535,6 @@ done:
return new_offset;
}
static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix, uint16_t **refcount_table,
int64_t *nb_clusters);
/*
* Calculates an in-memory refcount table.
*/
static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix, uint16_t **refcount_table,
int64_t *nb_clusters)
{
BDRVQcowState *s = bs->opaque;
int64_t i;
QCowSnapshot *sn;
int ret;
*refcount_table = g_try_new0(uint16_t, *nb_clusters);
if (*nb_clusters && *refcount_table == NULL) {
res->check_errors++;
return -ENOMEM;
}
/* header */
inc_refcounts(bs, res, *refcount_table, *nb_clusters,
0, s->cluster_size);
/* current L1 table */
ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
s->l1_table_offset, s->l1_size, CHECK_FRAG_INFO);
if (ret < 0) {
return ret;
}
/* snapshots */
for (i = 0; i < s->nb_snapshots; i++) {
sn = s->snapshots + i;
ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
sn->l1_table_offset, sn->l1_size, 0);
if (ret < 0) {
return ret;
}
}
inc_refcounts(bs, res, *refcount_table, *nb_clusters,
s->snapshots_offset, s->snapshots_size);
/* refcount data */
inc_refcounts(bs, res, *refcount_table, *nb_clusters,
s->refcount_table_offset,
s->refcount_table_size * sizeof(uint64_t));
return check_refblocks(bs, res, fix, refcount_table, nb_clusters);
}
/*
* Checks consistency of refblocks and accounts for each refblock in
* *refcount_table.
@ -1664,6 +1611,55 @@ static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
return 0;
}
/*
* Calculates an in-memory refcount table.
*/
static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix, uint16_t **refcount_table,
int64_t *nb_clusters)
{
BDRVQcowState *s = bs->opaque;
int64_t i;
QCowSnapshot *sn;
int ret;
*refcount_table = g_try_new0(uint16_t, *nb_clusters);
if (*nb_clusters && *refcount_table == NULL) {
res->check_errors++;
return -ENOMEM;
}
/* header */
inc_refcounts(bs, res, *refcount_table, *nb_clusters,
0, s->cluster_size);
/* current L1 table */
ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
s->l1_table_offset, s->l1_size, CHECK_FRAG_INFO);
if (ret < 0) {
return ret;
}
/* snapshots */
for (i = 0; i < s->nb_snapshots; i++) {
sn = s->snapshots + i;
ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
sn->l1_table_offset, sn->l1_size, 0);
if (ret < 0) {
return ret;
}
}
inc_refcounts(bs, res, *refcount_table, *nb_clusters,
s->snapshots_offset, s->snapshots_size);
/* refcount data */
inc_refcounts(bs, res, *refcount_table, *nb_clusters,
s->refcount_table_offset,
s->refcount_table_size * sizeof(uint64_t));
return check_refblocks(bs, res, fix, refcount_table, nb_clusters);
}
/*
* Compares the actual reference count for each cluster in the image against the
* refcount as reported by the refcount structures on-disk.