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OstreeMutableTree: Invalidate parent contents checksum when metadata changes

Browse Source 
This bug has existed before the previous commit, but thanks to the previous
commit it is now easy to fix.

Closes: #1655
Approved by: cgwalters
This commit is contained in:
William Manley 2018-06-25 22:56:10 +01:00 committed by Atomic Bot
parent 5b0dd1002e
commit 488365f9bf
2 changed files with 27 additions and 3 deletions
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5
src/libostree/ostree-mutable-tree.c
View File

@ -148,7 +148,6 @@ invalidate_contents_checksum (OstreeMutableTree *self)
if (!self->contents_checksum)
break;
g_free (self->contents_checksum);
g_clear_pointer (&self->contents_checksum, g_free);
self = self->parent;
}
@ -158,6 +157,10 @@ void
ostree_mutable_tree_set_metadata_checksum (OstreeMutableTree *self,
const char *checksum)
{
if (g_strcmp0 (checksum, self->metadata_checksum) == 0)
return;
invalidate_contents_checksum (self->parent);
g_free (self->metadata_checksum);
self->metadata_checksum = g_strdup (checksum);
}

25
tests/test-mutable-tree.c
View File

@ -31,6 +31,7 @@
static void
test_metadata_checksum (void)
{
g_autoptr(GError) error = NULL;
const char *checksum = "12345678901234567890123456789012";
glnx_unref_object OstreeMutableTree *tree = ostree_mutable_tree_new ();
@ -39,6 +40,27 @@ test_metadata_checksum (void)
ostree_mutable_tree_set_metadata_checksum (tree, checksum);
g_assert_cmpstr (checksum, ==, ostree_mutable_tree_get_metadata_checksum (tree));
/* If a child tree's metadata changes the parent tree's contents needs to be
* recalculated */
glnx_unref_object OstreeMutableTree *subdir = NULL;
g_assert (ostree_mutable_tree_ensure_dir (tree, "subdir", &subdir, &error));
g_assert_nonnull (subdir);
ostree_mutable_tree_set_contents_checksum (
subdir, "11111111111111111111111111111111");
ostree_mutable_tree_set_metadata_checksum (
subdir, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
ostree_mutable_tree_set_contents_checksum (
tree, "abcdefabcdefabcdefabcdefabcdefab");
g_assert_cmpstr (ostree_mutable_tree_get_contents_checksum (tree), ==,
"abcdefabcdefabcdefabcdefabcdefab");
ostree_mutable_tree_set_metadata_checksum (
subdir, "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb");
g_assert_null (ostree_mutable_tree_get_contents_checksum (tree));
g_assert_cmpstr (ostree_mutable_tree_get_contents_checksum (subdir), ==,
"11111111111111111111111111111111");
}
static void
@ -162,13 +184,12 @@ test_contents_checksum (void)
const char *subdir_checksum = "ABCD0123456789012345678901234567";
glnx_unref_object OstreeMutableTree *tree = ostree_mutable_tree_new ();
glnx_unref_object OstreeMutableTree *subdir = NULL;
g_autoptr(GError) error = NULL;
g_assert_null (ostree_mutable_tree_get_contents_checksum (tree));
ostree_mutable_tree_set_contents_checksum (tree, checksum);
g_assert_cmpstr (checksum, ==, ostree_mutable_tree_get_contents_checksum (tree));
g_assert (ostree_mutable_tree_ensure_dir (tree, "subdir", &subdir, &error));
g_assert (ostree_mutable_tree_ensure_dir (tree, "subdir", &subdir, NULL));
g_assert_nonnull (subdir);
ostree_mutable_tree_set_contents_checksum (subdir, subdir_checksum);