ref: 8f191a4cad7365c97247c822c482e1afda3f5b33 dir: /include/bits/linux/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"