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core: Ensure we delete duplicate files in a transaction 

If multiple files have the same hash, we need to ensure we're not
overwriting other tempfiles in the same transaction.  Instead
just delete them, since we know they're in the repo.
This commit is contained in:
Colin Walters 2012-01-15 12:25:52 -05:00
parent 9910c0ddf4
commit ebe35dbefe
2 changed files with 45 additions and 11 deletions
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2
src/libostree/ostree-core.c
View File

@ -887,7 +887,7 @@ ostree_create_temp_file_from_input (GFile *dir,
g_free (possible_name);
possible_name = subst_xxxxxx (tmp_name->str);
g_clear_object (&possible_file);
possible_file = ot_gfile_new_for_path (possible_name);
possible_file = g_file_get_child (dir, possible_name);
if (!ostree_create_file_from_input (possible_file, finfo, xattrs, input,
objtype,

54
src/libostree/ostree-repo.c
View File

@ -755,6 +755,39 @@ stage_object_impl (OstreeRepo *self,
GCancellable *cancellable,
GError **error);
static gboolean
insert_into_transaction (OstreeRepo *self,
const char *checksum,
OstreeObjectType objtype,
GFile *tempfile_path,
GError **error)
{
gboolean ret = FALSE;
OstreeRepoPrivate *priv = GET_PRIVATE (self);
char *key;
key = create_checksum_and_objtype (checksum, objtype);
if (g_hash_table_lookup (priv->pending_transaction_tmpfiles, key))
{
if (unlink (ot_gfile_get_path_cached (tempfile_path)) < 0)
{
ot_util_set_error_from_errno (error, errno);
goto out;
}
g_free (key);
}
else
{
g_hash_table_insert (priv->pending_transaction_tmpfiles,
key, g_strdup (ot_gfile_get_basename_cached (tempfile_path)));
}
ret = TRUE;
out:
return ret;
}
static gboolean
impl_stage_archive_file_object_from_raw (OstreeRepo *self,
GFileInfo *file_info,
@ -828,12 +861,13 @@ impl_stage_archive_file_object_from_raw (OstreeRepo *self,
else
actual_checksum = g_checksum_get_string (ret_checksum);
g_hash_table_insert (priv->pending_transaction_tmpfiles,
create_checksum_and_objtype (actual_checksum, OSTREE_OBJECT_TYPE_ARCHIVED_FILE_CONTENT),
g_strdup (ot_gfile_get_basename_cached (content_temp_file)));
g_hash_table_insert (priv->pending_transaction_tmpfiles,
create_checksum_and_objtype (actual_checksum, OSTREE_OBJECT_TYPE_ARCHIVED_FILE_META),
g_strdup (ot_gfile_get_basename_cached (meta_temp_file)));
if (!insert_into_transaction (self, actual_checksum, OSTREE_OBJECT_TYPE_ARCHIVED_FILE_CONTENT,
content_temp_file, error))
goto out;
if (!insert_into_transaction (self, actual_checksum, OSTREE_OBJECT_TYPE_ARCHIVED_FILE_META,
meta_temp_file, error))
goto out;
ret = TRUE;
ot_transfer_out_value (out_checksum, &ret_checksum);
@ -910,7 +944,7 @@ stage_object_impl (OstreeRepo *self,
else
{
if (!ostree_create_temp_file_from_input (priv->transaction_dir,
"store-tmp-", NULL,
ostree_object_type_to_string (objtype), NULL,
file_info, xattrs, input,
objtype,
&temp_file,
@ -933,9 +967,9 @@ stage_object_impl (OstreeRepo *self,
}
}
g_hash_table_insert (priv->pending_transaction_tmpfiles,
create_checksum_and_objtype (actual_checksum, objtype),
g_strdup (ot_gfile_get_basename_cached (temp_file)));
if (!insert_into_transaction (self, actual_checksum, objtype,
temp_file, error))
goto out;
g_clear_object (&temp_file);
}
}