/*
 * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
 *               2005-2007 Takahiro Hirofuchi
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#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;
	uint8_t portnum;
	char path[PATH_MAX+1];

	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;
		}

	/* check max port */

	portnum = atoi(port);

	/* remove the port state file */

	snprintf(path, PATH_MAX, VHCI_STATE_PATH"/port%d", portnum);

	remove(path);
	rmdir(VHCI_STATE_PATH);

	ret = usbip_vhci_driver_open();
	if (ret < 0) {
		err("open vhci_driver");
		return -1;
	}

	ret = usbip_vhci_detach_device(portnum);
	if (ret < 0)
		return -1;

	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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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=045169816b31b10faed984b01c390db1b32ee4c1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=045169816b31b10faed984b01c390db1b32ee4c1'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf?id=045169816b31b10faed984b01c390db1b32ee4c1'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/trace?id=045169816b31b10faed984b01c390db1b32ee4c1'>trace</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/trace/beauty?id=045169816b31b10faed984b01c390db1b32ee4c1'>beauty</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='045169816b31b10faed984b01c390db1b32ee4c1'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-10 09:47:13 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-10 09:47:13 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/trace/beauty?id=045169816b31b10faed984b01c390db1b32ee4c1'>045169816b31b10faed984b01c390db1b32ee4c1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/trace/beauty?id=045169816b31b10faed984b01c390db1b32ee4c1'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=045169816b31b10faed984b01c390db1b32ee4c1'>ecb1d0c763f3d8cb0af749717b66ac47e6981d33</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/trace/beauty?id=045169816b31b10faed984b01c390db1b32ee4c1'>tools/perf/trace/beauty</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/trace/beauty?id=cd6628953e4216b65e7d91ab70ff8e5b65c9fde9'>cd6628953e4216b65e7d91ab70ff8e5b65c9fde9</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/trace/beauty?id=045169816b31b10faed984b01c390db1b32ee4c1&amp;id2=cd6628953e4216b65e7d91ab70ff8e5b65c9fde9'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/trace/beauty?id=678b5c6b22fed89a13d5b2267f423069a9b11c80'>678b5c6b22fed89a13d5b2267f423069a9b11c80</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/trace/beauty?id=045169816b31b10faed984b01c390db1b32ee4c1&amp;id2=678b5c6b22fed89a13d5b2267f423069a9b11c80'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6</div><div class='commit-msg'>Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Fix pointer size when caam is used with AArch64 boot loader on
     AArch32 kernel.

   - Fix ahash state corruption in marvell driver.

   - Fix buggy algif_aed tag handling.

   - Prevent mcryptd from being used with incompatible algorithms which
     can cause crashes"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix uninitialized variable warning
  crypto: mcryptd - Check mcryptd algorithm compatibility
  crypto: algif_aead - fix AEAD tag memory handling
  crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel
  crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash
  crypto: marvell - Don't copy hash operation twice into the SRAM
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=045169816b31b10faed984b01c390db1b32ee4c1'>Diffstat</a> (limited to 'tools/perf/trace/beauty')</div><table summary='diffstat' class='diffstat'>