/*
* Copy s2 to s1, truncating or null-padding to always copy n bytes
* return s1
*/
char *
strncpy(s1, s2, n)
register char *s1, *s2;
register int n;
{
register char *os1 = s1;
while (--n >= 0)
if ((*s1++ = *s2++) == '\0')
*s1++ = '\0';
return (os1);
}