ref: 1a5e3a4dd663c092030315c8a240d0737473102b 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"