ref: a6692449e11bf9f40d051e0b8eb566bca72946ca dir: /include/bits/dragonfly/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"