/*
 * 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 <errno.h>
#include <stdio.h>
#include <string.h>

#include "usbip_common.h"
#include "utils.h"
#include "sysfs_utils.h"

int modify_match_busid(char *busid, int add)
{
	char attr_name[] = "match_busid";
	char command[SYSFS_BUS_ID_SIZE + 4];
	char match_busid_attr_path[SYSFS_PATH_MAX];
	int rc;

	snprintf(match_busid_attr_path, sizeof(match_busid_attr_path),
		 "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME,
		 SYSFS_BUS_TYPE, SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME,
		 attr_name);

	if (add)
		snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", busid);
	else
		snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", busid);

	rc = write_sysfs_attribute(match_busid_attr_path, command,
				   sizeof(command));
	if (rc < 0) {
		dbg("failed to write match_busid: %s", strerror(errno));
		return -1;
	}

	return 0;
}
cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/include/uapi/drm/virtgpu_drm.h'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/uapi/drm/virtgpu_drm.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>drm</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>virtgpu_drm.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='dfef358bd1beb4e7b5c94eca944be9cd23dfc752'/><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>Christoph Hellwig &lt;hch@lst.de&gt;</td><td class='right'>2017-01-30 13:15:41 +0100</td></tr>
<tr><th>committer</th><td>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-02-02 10:35:46 -0600</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>dfef358bd1beb4e7b5c94eca944be9cd23dfc752</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>b9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>include/uapi/drm/virtgpu_drm.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/virtgpu_drm.h?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/drm/virtgpu_drm.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752&amp;id2=030305d69fc6963c16003f50d7e8d74b02d0a143'>diff</a>)</td></tr></table>
<div class='commit-subject'>PCI/MSI: Don't apply affinity if there aren't enough vectors left</div><div class='commit-msg'>Bart reported a problem wіth an out of bounds access in the low-level IRQ
affinity code, which we root caused to the qla2xxx driver assigning all its
MSI-X vectors to the pre and post vectors, and not having any left for the
actually spread IRQs.

Fix this issue by not asking for affinity assignment when there are no
vectors to assign left.

Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()")
Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com
Reported-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Tested-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>Diffstat</a> (limited to 'include/uapi/drm/virtgpu_drm.h')</div><table summary='diffstat' class='diffstat'>