ref: 873ff6ca249bc069c5d38b18902e271668ebdc30
dir: /include/err.h/
#pragma once enum { OK = 0, /* you don't want these mass up with your values */ PERM_DENIED = -128, NAME_TOO_LONG, NO_FILE, FS_NOT_READY, DIR_NOT_EMPTY, NO_MEM, LL_ERR, NO_SUCH_CMD, USAGE, }err;