#


/* Set update and access times on file.
 */

utime()

{	register struct inode *ip;
	int tv[4];

	if ((ip = owner()) == NULL)
		return;

	if (copyin(u.u_arg[1], &tv[0], sizeof(tv))) {
		u.u_error = EFAULT;
		return;
	}

	ip->i_flag =| (IACC|IUPD);
	iupdat7(ip, &tv[0], &tv[2]);
	ip->i_flag =& ~(IACC|IUPD);
	iput(ip);
}


/* V7 form, with the additional 'access time' argument.
 */

iupdat7(p, ta, tm)
int *p;
int *ta;
int *tm;
{
	register *ip1, *ip2, *rp;
	int *bp, i;

	rp = p;
	if((rp->i_flag&(IUPD|IACC)) != 0) {
		if(getfs(rp->i_dev)->s_ronly)
			return;
		i = rp->i_number+31;
		bp = bread(rp->i_dev, ldiv(i,16));
		ip1 = bp->b_addr + 32*lrem(i, 16);
		ip2 = &rp->i_mode;
		while(ip2 < &rp->i_addr[8])
			*ip1++ = *ip2++;
		if(rp->i_flag&IACC) {
			*ip1++ = *ta++;
			*ip1++ = *ta;
		} else
			ip1 =+ 2;
		if(rp->i_flag&IUPD) {
			*ip1++ = *tm++;
			*ip1++ = *tm;
		}
		bwrite(bp);
	}
}