#include "lib9.h"#include <sys/types.h>#include <fcntl.h> intcreate(char *f, int mode, int perm){	int m; 	m = 0;	switch(mode & 3){	case OREAD:	case OEXEC:		m = O_RDONLY;		break;	case OWRITE:		m = O_WRONLY;		break;	case ORDWR:		m = O_RDWR;		break;	}	m |= O_CREAT|O_TRUNC; 	if(perm & DMDIR){		if(mkdir(f, perm&0777) < 0)			return -1;		perm &= ~DMDIR;		m &= 3;	}	return open(f, m, perm);}