/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h> char*strncpy(char *s1, char *s2, long n){	int i;	char *os1; 	os1 = s1;	for(i = 0; i < n; i++)		if((*s1++ = *s2++) == 0) {			while(++i < n)				*s1++ = 0;			return os1;		}	return os1;}