#define NOPLAN9DEFINES#include <u.h>#include <libc.h>#include <sys/time.h>#include <sys/stat.h> #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__OpenBSD__)/* do nothing -- futimes exists and is fine */ #elif defined(__SunOS5_9__)/* use futimesat */static intfutimes(int fd, struct timeval *tv){	return futimesat(fd, 0, tv);} #else/* provide dummy *//* rename just in case -- linux provides an unusable one */#undef futimes#define futimes myfutimesstatic intfutimes(int fd, struct timeval *tv){	werrstr("futimes not available");	return -1;} #endif intdirfwstat(int fd, Dir *dir){	int ret;	struct timeval tv[2]; 	ret = 0;	if(~dir->mode != 0){		if(fchmod(fd, dir->mode) < 0)			ret = -1;	}	if(~dir->mtime != 0){		tv[0].tv_sec = dir->mtime;		tv[0].tv_usec = 0;		tv[1].tv_sec = dir->mtime;		tv[1].tv_usec = 0;		if(futimes(fd, tv) < 0)			ret = -1;	}	return ret;}