* ENV_NAME_FDS has the following format: Each descriptor as string followed
* by a comma; there's a trailing comma. Example: "2,4,". */
static void init_from_environment(void) {
+ const char *env;
+
initialized = 1;
tracked_fds_count = 0;
- const char *env = getenv(ENV_NAME_FDS);
+ /* If ENV_NAME_FORCE_WRITE is set and not empty, allow writes to a non-tty
+ * device. Use with care! Mainly used for the test suite. */
+ env = getenv(ENV_NAME_FORCE_WRITE);
+ if (env && env[0] != '\0') {
+ force_write_to_non_tty = 1;
+ }
+
+ env = getenv(ENV_NAME_FDS);
if (!env) {
return;
}