ref: fcec548cff5349d73e1c64a99aee77ce2331858d dir: /include/bits/linux/sys/stdio.h/
#define BUFSIZ 512 #define FILENAME_MAX 256 #define FOPEN_MAX 16 #define TMP_MAX 25 #define _TMPNAME "/tmp/tmp.0000000" #define L_tmpnam sizeof(_TMPNAME)