/**

 * Seccomp Library test program

 *

 * Copyright (c) 2018 Oracle and/or its affiliates.  All rights reserved.

 * Author: Tom Hromatka <tom.hromatka@oracle.com>

 */

/*

 * This library is free software; you can redistribute it and/or modify it

 * under the terms of version 2.1 of the GNU Lesser General Public License as

 * published by the Free Software Foundation.

 *

 * This library 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 Lesser General Public License

 * for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this library; if not, see <http://www.gnu.org/licenses>.

 */

#include <errno.h>

#include <unistd.h>

#include <seccomp.h>

#include "util.h"

int main(int argc, char *argv[])

{

	int rc;

	struct util_options opts;

	scmp_filter_ctx ctx = NULL;

	rc = util_getopt(argc, argv, &opts);

	if (rc < 0)

		goto out;

	rc = seccomp_api_set(3);

	if (rc != 0)

		return -rc;

	ctx = seccomp_init(SCMP_ACT_KILL_PROCESS);

	if (ctx == NULL)

		return ENOMEM;

	rc = seccomp_arch_remove(ctx, SCMP_ARCH_NATIVE);

	if (rc != 0)

		goto out;

	rc = seccomp_arch_add(ctx, SCMP_ARCH_X86_64);

	if (rc != 0)

		goto out;

	rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 0);

	if (rc != 0)

		goto out;

	rc = seccomp_rule_add(ctx, SCMP_ACT_ERRNO(5), SCMP_SYS(write), 0);

	if (rc != 0)

		goto out;

	rc = seccomp_rule_add(ctx, SCMP_ACT_KILL_THREAD, SCMP_SYS(open), 0);

	if (rc != 0)

		goto out;

	rc = seccomp_rule_add(ctx, SCMP_ACT_ERRNO(6), SCMP_SYS(close), 1,

			      SCMP_A0(SCMP_CMP_GT, 100));

	if (rc != 0)

		goto out;

	rc = util_filter_output(&opts, ctx);

	if (rc)

		goto out;

out:

	seccomp_release(ctx);

	return (rc < 0 ? -rc : rc);

}