( ( len > 0 ) ? ( len - 1 ) : 0 ) );
}
+/**
+ * Fetch value of string setting
+ *
+ * @v settings Settings block, or NULL to search all blocks
+ * @v setting Setting to fetch
+ * @v data Buffer to allocate and fill with setting string data
+ * @ret len Length of string setting, or negative error
+ *
+ * The resulting string is guaranteed to be correctly NUL-terminated.
+ * The returned length will be the length of the underlying setting
+ * data. The caller is responsible for eventually freeing the
+ * allocated buffer.
+ */
+int fetch_string_setting_copy ( struct settings *settings,
+ struct setting *setting,
+ char **data ) {
+ int len;
+ int check_len;
+
+ len = fetch_setting_len ( settings, setting );
+ if ( len < 0 )
+ return len;
+
+ *data = malloc ( len + 1 );
+ if ( ! *data )
+ return -ENOMEM;
+
+ fetch_string_setting ( settings, setting, *data, ( len + 1 ) );
+ assert ( check_len == len );
+ return len;
+}
+
/**
* Fetch value of IPv4 address setting
*
extern int fetch_string_setting ( struct settings *settings,
struct setting *setting,
char *data, size_t len );
+extern int fetch_string_setting_copy ( struct settings *settings,
+ struct setting *setting,
+ char **data );
extern int fetch_ipv4_setting ( struct settings *settings,
struct setting *setting, struct in_addr *inp );
extern int fetch_int_setting ( struct settings *settings,