/* Copyright (c) 2016 Facebook
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 */
#include <linux/unistd.h>
#include <linux/bpf.h>

#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>

#include "libbpf.h"

static void usage(void)
{
	printf("Usage: test_cgrp2_array_pin [...]\n");
	printf("       -F <file>   File to pin an BPF cgroup array\n");
	printf("       -U <file>   Update an already pinned BPF cgroup array\n");
	printf("       -v <value>  Full path of the cgroup2\n");
	printf("       -h          Display this help\n");
}

int main(int argc, char **argv)
{
	const char *pinned_file = NULL, *cg2 = NULL;
	int create_array = 1;
	int array_key = 0;
	int array_fd = -1;
	int cg2_fd = -1;
	int ret = -1;
	int opt;

	while ((opt = getopt(argc, argv, "F:U:v:")) != -1) {
		switch (opt) {
		/* General args */
		case 'F':
			pinned_file = optarg;
			break;
		case 'U':
			pinned_file = optarg;
			create_array = 0;
			break;
		case 'v':
			cg2 = optarg;
			break;
		default:
			usage();
			goto out;
		}
	}

	if (!cg2 || !pinned_file) {
		usage();
		goto out;
	}

	cg2_fd = open(cg2, O_RDONLY);
	if (cg2_fd < 0) {
		fprintf(stderr, "open(%s,...): %s(%d)\n",
			cg2, strerror(errno), errno);
		goto out;
	}

	if (create_array) {
		array_fd = bpf_create_map(BPF_MAP_TYPE_CGROUP_ARRAY,
					  sizeof(uint32_t), sizeof(uint32_t),
					  1, 0);
		if (array_fd < 0) {
			fprintf(stderr,
				"bpf_create_map(BPF_MAP_TYPE_CGROUP_ARRAY,...): %s(%d)\n",
				strerror(errno), errno);
			goto out;
		}
	} else {
		array_fd = bpf_obj_get(pinned_file);
		if (array_fd < 0) {
			fprintf(stderr, "bpf_obj_get(%s): %s(%d)\n",
				pinned_file, strerror(errno), errno);
			goto out;
		}
	}

	ret = bpf_map_update_elem(array_fd, &array_key, &cg2_fd, 0);
	if (ret) {
		perror("bpf_map_update_elem");
		goto out;
	}

	if (create_array) {
		ret = bpf_obj_pin(array_fd, pinned_file);
		if (ret) {
			fprintf(stderr, "bpf_obj_pin(..., %s): %s(%d)\n",
				pinned_file, strerror(errno), errno);
			goto out;
		}
	}

out:
	if (array_fd != -1)
		close(array_fd);
	if (cg2_fd != -1)
		close(cg2_fd);
	return ret;
}
grep'>log msg</option>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>drivers</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='83fb8b055544a25ceeac34a666a2149331ea94bf'/><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>Dave Airlie &lt;airlied@redhat.com&gt;</td><td class='right'>2016-12-01 10:00:14 +1000</td></tr>
<tr><th>committer</th><td>Dave Airlie &lt;airlied@redhat.com&gt;</td><td class='right'>2016-12-01 10:00:14 +1000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>83fb8b055544a25ceeac34a666a2149331ea94bf</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>dc37dfae6382b27dae8b93ffeb23b4e660060aff</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>drivers</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=b14fd8efb4805ff9a3218ba16f99b58778c4441e'>b14fd8efb4805ff9a3218ba16f99b58778c4441e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers?id=83fb8b055544a25ceeac34a666a2149331ea94bf&amp;id2=b14fd8efb4805ff9a3218ba16f99b58778c4441e'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=e94bd1736f1f60e916a85a80c0b0ebeaae36cce5'>e94bd1736f1f60e916a85a80c0b0ebeaae36cce5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers?id=83fb8b055544a25ceeac34a666a2149331ea94bf&amp;id2=e94bd1736f1f60e916a85a80c0b0ebeaae36cce5'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'drm-misc-fixes-2016-11-30' of git://anongit.freedesktop.org/git/drm-misc into drm-fixes</div><div class='commit-msg'>single drm fix.

* tag 'drm-misc-fixes-2016-11-30' of git://anongit.freedesktop.org/git/drm-misc:
  drm: Don't call drm_for_each_crtc with a non-KMS driver
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=83fb8b055544a25ceeac34a666a2149331ea94bf'>Diffstat</a> (limited to 'drivers')</div><table summary='diffstat' class='diffstat'>