u_int
sleep(u_int i)
{
register time_t t;
/* loop for that number of seconds, polling BIOS,
so that it may handle interrupts */
for (t = getsecs() + i; getsecs() < t; cnischar());
return 0;
}
static int
readline(char *buf, size_t n, int to)
{
#ifdef DEBUG
extern int debug;
#endif
char *p = buf, ch;
/* Only do timeout if greater than 0 */
if (to > 0) {
u_long i = 0;
time_t tt = getsecs() + to;
#ifdef DEBUG
if (debug > 2)
printf ("readline: timeout(%d) at %u\n", to, tt);
#endif
/* check for timeout expiration less often
(for some very constrained archs) */
while (!cnischar())
if (!(i++ % 1000) && (getsecs() >= tt))
break;
if (!cnischar()) {
strlcpy(buf, "boot", 5);
putchar('\n');
return strlen(buf);
}
} else
while (!cnischar())
;
/* User has typed something. Turn off timeouts. */
cmd.timeout = 0;
while (1) {
switch ((ch = getchar())) {
case CTRL('u'):
while (p > buf) {
putchar('\177');
p--;
}
continue;
case '\n':
case '\r':
p[1] = *p = '\0';
break;
case '\b':
case '\177':
if (p > buf) {
putchar('\177');
p--;
}
continue;
default:
if (p - buf < n-1)
*p++ = ch;
else {
putchar('\007');
putchar('\177');
}
continue;
}
break;
}
return p - buf;
}
