NetBSD/usr.sbin/usbd/usbd.c

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1998-07-23 22:39:53 +04:00
/* $NetBSD: usbd.c,v 1.2 1998/07/23 18:39:53 augustss Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Author: Lennart Augustsson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/time.h>
#include <dev/usb/usb.h>
#define USBDEV "/dev/usb"
#define MAXUSBDEV 4
extern char *__progname;
void usage(void);
void
usage(void)
{
fprintf(stderr, "Usage: %s [-d] [-e] [-f dev] [-t timeout] [-v]\n",
__progname);
exit(1);
}
#define NDEVS 20 /* maximum number of usb controllers */
/*
* Sometimes a device does not respond in time for interrupt
* driven explore to find it. Therefore we run an exploration
* at regular intervals to catch those.
*/
#define TIMEOUT 30
int
main(int argc, char **argv)
{
int r, i;
char *devs[NDEVS];
int ndevs = 0;
int fds[NDEVS];
fd_set fdset;
int ch, verbose = 0;
int debug = 0;
int explore = 0;
int itimo = TIMEOUT;
int maxfd;
char buf[50];
struct timeval timo;
extern char *optarg;
extern int optind;
1998-07-23 22:39:53 +04:00
while ((ch = getopt(argc, argv, "def:t:v")) != -1) {
switch(ch) {
case 'd':
debug++;
break;
case 'e':
explore++;
break;
case 'f':
if (ndevs < NDEVS)
devs[ndevs++] = optarg;
break;
case 't':
itimo = atoi(optarg);
break;
case 'v':
verbose++;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
maxfd = 0;
if (ndevs == 0) {
for (i = 0; i < MAXUSBDEV; i++) {
sprintf(buf, "%s%d", USBDEV, i);
fds[ndevs] = open(buf, O_RDWR);
if (fds[ndevs] >= 0) {
devs[ndevs] = strdup(buf);
if (verbose)
printf("%s: opening %s\n",
__progname, devs[ndevs]);
if (fds[ndevs] > maxfd)
maxfd = fds[ndevs];
ndevs++;
}
}
} else {
for (i = 0; i < ndevs; i++) {
fds[i] = open(devs[i], O_RDWR);
if (fds[i] < 0)
err(1, "%s", devs[i]);
else if (fds[i] > maxfd)
maxfd = fds[i];
}
}
if (ndevs == 0) {
if (verbose)
printf("%s: no USB controllers found\n", __progname);
exit(0);
}
if (explore) {
for (i = 0; i < ndevs; i++) {
r = ioctl(fds[i], USB_DISCOVER);
if (r < 0)
err(1, "USB_DISCOVER");
}
exit(0);
}
if (!debug)
daemon(0, 0);
FD_ZERO(&fdset);
for (;;) {
for (i = 0; i < ndevs; i++)
FD_SET(fds[i], &fdset);
timo.tv_usec = 0;
timo.tv_sec = itimo;
r = select(maxfd+1, &fdset, &fdset, 0, itimo ? &timo : 0);
if (r < 0)
warn("select failed\n");
for (i = 0; i < ndevs; i++)
if (r == 0 || FD_ISSET(fds[i], &fdset)) {
if (verbose)
printf("%s: doing %sdiscovery on %s\n",
__progname, r ? "" : "timeout ",
devs[i]);
if (ioctl(fds[i], USB_DISCOVER) < 0)
err(1, "USB_DISCOVER");
}
}
}