usr/src/sys/stand.att/copy.c

/*      copy.c  4.1     83/02/13        */

/*
 * Copy from to in 10K units.
 * Intended for use in system
 * installation.
 */
main()
{
        int from, to;
        char fbuf[50], tbuf[50];
        char buffer[10240];
        register int i;

        from = getdev("From", fbuf, 0);
        to = getdev("To", tbuf, 1);
        for (;;) {
                i = read(from, buffer, sizeof (buffer));
                if (i != sizeof (buffer))
                        break;
                (void) write(to, buffer, i);
        }
        printf("Copy completed\n");
        /* can't call exit here */
}

getdev(prompt, buf, mode)
        char *prompt, *buf;
        int mode;
{
        register int i;

        do {
                printf("%s: ", prompt);
                gets(buf);
                i = open(buf, mode);
        } while (i <= 0);
        return (i);
}