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;
}
/*
* public interface
*/
struct dm_config_tree *config_file_open(const char *filename, int keep_open)
{
struct dm_config_tree *cft = dm_config_create();
struct config_file *cf;
if (!cft)
return NULL;
cf = dm_pool_zalloc(cft->mem, sizeof(struct config_file));
if (!cf) goto fail;
cf->timestamp = 0;
cf->exists = 0;
cf->keep_open = keep_open;
dm_config_set_custom(cft, cf);
if (filename &&
!(cf->filename = dm_pool_strdup(cft->mem, filename))) {
log_error("Failed to duplicate filename.");
goto fail;
}
return cft;
fail:
dm_config_destroy(cft);
return NULL;
}
/*
* public interface
*/
struct dm_config_tree *config_open(config_source_t source,
const char *filename,
int keep_open)
{
struct dm_config_tree *cft = dm_config_create();
struct config_source *cs;
struct config_file *cf;
if (!cft)
return NULL;
if (!(cs = dm_pool_zalloc(cft->mem, sizeof(struct config_source)))) {
log_error("Failed to allocate config source.");
goto fail;
}
if ((source == CONFIG_FILE) || (source == CONFIG_PROFILE)) {
if (!(cf = dm_pool_zalloc(cft->mem, sizeof(struct config_file)))) {
log_error("Failed to allocate config file.");
goto fail;
}
cf->keep_open = keep_open;
if (filename &&
!(cf->filename = dm_pool_strdup(cft->mem, filename))) {
log_error("Failed to duplicate filename.");
goto fail;
}
cs->source.file = cf;
}
cs->type = source;
dm_config_set_custom(cft, cs);
return cft;
fail:
dm_config_destroy(cft);
return NULL;
}
