KENV_MVALLEN
if ((hlen = strlen(hinfo)) > KENV_MVALLEN) {
hlen += KENV_MVALLEN -
(hlen % KENV_MVALLEN);
char lbuf[KENV_MVALLEN], *cp, *ep, *dev, *fstyp, *options;
char name[KENV_MNAMELEN], val[KENV_MVALLEN];
static int kenv_mvallen = KENV_MVALLEN;
#define LEN (KENV_MVALLEN + 1)