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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
* 2005-2007 Takahiro Hirofuchi
*/
#include <ctype.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include "vhci_driver.h"
#include "usbip_common.h"
#include "usbip_network.h"
#include "usbip.h"
static const char usbip_detach_usage_string[] =
"usbip detach <args>\n"
" -p, --port=<port> " USBIP_VHCI_DRV_NAME
" port the device is on\n";
void usbip_detach_usage(void)
{
printf("usage: %s", usbip_detach_usage_string);
}
static int detach_port(char *port)
{
int ret = 0;
uint8_t portnum;
char path[PATH_MAX+1];
int i;
struct usbip_imported_device *idev;
int found = 0;
unsigned int port_len = strlen(port);
for (unsigned int i = 0; i < port_len; i++)
if (!isdigit(port[i])) {
err("invalid port %s", port);
return -1;
}
portnum = atoi(port);
ret = usbip_vhci_driver_open();
if (ret < 0) {
err("open vhci_driver (is vhci_hcd loaded?)");
return -1;
}
/* check for invalid port */
for (i = 0; i < vhci_driver->nports; i++) {
idev = &vhci_driver->idev[i];
if (idev->port == portnum) {
found = 1;
if (idev->status != VDEV_ST_NULL)
break;
info("Port %d is already detached!\n", idev->port);
goto call_driver_close;
}
}
if (!found) {
err("Invalid port %s > maxports %d",
port, vhci_driver->nports);
goto call_driver_close;
}
/* remove the port state file */
snprintf(path, PATH_MAX, VHCI_STATE_PATH"/port%d", portnum);
remove(path);
rmdir(VHCI_STATE_PATH);
ret = usbip_vhci_detach_device(portnum);
if (ret < 0) {
ret = -1;
err("Port %d detach request failed!\n", portnum);
goto call_driver_close;
}
info("Port %d is now detached!\n", portnum);
call_driver_close:
usbip_vhci_driver_close();
return ret;
}
int usbip_detach(int argc, char *argv[])
{
static const struct option opts[] = {
{ "port", required_argument, NULL, 'p' },
{ NULL, 0, NULL, 0 }
};
int opt;
int ret = -1;
for (;;) {
opt = getopt_long(argc, argv, "p:", opts, NULL);
if (opt == -1)
break;
switch (opt) {
case 'p':
ret = detach_port(optarg);
goto out;
default:
goto err_out;
}
}
err_out:
usbip_detach_usage();
out:
return ret;
}
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