ref: a4313f26facb302a3089d98f158ccd248ce734db
dir: /sys/src/cmd/unix/u9fs/safecpy.c/
#include <stdio.h>
void
safecpy(char *to, char *from, int tolen)
{
int fromlen;
memset(to, 0, tolen);
fromlen = from ? strlen(from) : 0;
if (fromlen > tolen)
fromlen = tolen;
memcpy(to, from, fromlen);
}