int override_config_tree_from_profile(struct cmd_context *cmd,
struct profile *profile)
{
struct dm_config_tree *cft = cmd->cft, *cft_string = NULL;
struct config_source *cs = dm_config_get_custom(cft);
/*
* Follow this sequence:
* CONFIG_STRING -> CONFIG_PROFILE -> CONFIG_FILE/CONFIG_MERGED_FILES
*/
if (!profile->cft && !load_profile(cmd, profile))
return_0;
if (cs->type == CONFIG_STRING) {
cft_string = cft;
cft = cft->cascade;
cs = dm_config_get_custom(cft);
if (cs->type == CONFIG_PROFILE) {
log_error(INTERNAL_ERROR "override_config_tree_from_profile: "
"config cascade already contains a profile config.");
return 0;
}
dm_config_insert_cascaded_tree(cft_string, profile->cft);
}
cmd->cft = dm_config_insert_cascaded_tree(profile->cft, cft);
cmd->cft = cft_string ? : profile->cft;
return 1;
}
int override_config_tree_from_string(struct cmd_context *cmd,
const char *config_settings)
{
struct dm_config_tree *cft_new;
struct config_source *cs = dm_config_get_custom(cmd->cft);
/*
* Follow this sequence:
* CONFIG_STRING -> CONFIG_PROFILE -> CONFIG_FILE/CONFIG_MERGED_FILES
*/
if (cs->type == CONFIG_STRING) {
log_error(INTERNAL_ERROR "override_config_tree_from_string: "
"config cascade already contains a string config.");
return 0;
}
if (!(cft_new = dm_config_from_string(config_settings))) {
log_error("Failed to set overridden configuration entries.");
return 0;
}
if (!(cs = dm_pool_zalloc(cft_new->mem, sizeof(struct config_source)))) {
log_error("Failed to allocate config source.");
dm_config_destroy(cft_new);
return 0;
}
cs->type = CONFIG_STRING;
dm_config_set_custom(cft_new, cs);
cmd->cft = dm_config_insert_cascaded_tree(cft_new, cmd->cft);
return 1;
}
int override_config_tree_from_string(struct cmd_context *cmd,
const char *config_settings)
{
struct dm_config_tree *cft_new;
if (!(cft_new = dm_config_from_string(config_settings))) {
log_error("Failed to set overridden configuration entries.");
return 1;
}
cmd->cft = dm_config_insert_cascaded_tree(cft_new, cmd->cft);
return 0;
}
static void test_cascade(void)
{
struct dm_config_tree *t1 = dm_config_from_string(conf),
*t2 = dm_config_from_string(overlay),
*tree = dm_config_insert_cascaded_tree(t2, t1);
CU_ASSERT(!strcmp(dm_config_tree_find_str(tree, "id", "foo"), "yoda-soda"));
CU_ASSERT(!strcmp(dm_config_tree_find_str(tree, "idt", "foo"), "foo"));
CU_ASSERT(!strcmp(dm_config_tree_find_str(tree, "physical_volumes/pv0/bb", "foo"), "foo"));
CU_ASSERT(!strcmp(dm_config_tree_find_str(tree, "physical_volumes/pv1/id", "foo"), "hgfe-dcba"));
CU_ASSERT(!strcmp(dm_config_tree_find_str(tree, "physical_volumes/pv3/id", "foo"), "dbcd-efgh"));
dm_config_destroy(t1);
dm_config_destroy(t2);
}
