ref: 1b3b1bd29f481e0fca986153d78c672413b2419c 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"