ref: 7e3a98c60416721729db2b8ed87c722e30e85fda dir: /include/bits/openbsd/sys/stdio.h/
#define BUFSIZ 512 #define FILENAME_MAX 256 #define FOPEN_MAX 16 #define TMP_MAX 25 #define L_tmpnam 256 #define _TMPNAME "/tmp/tmp.0000000"