Dmitry V. Levin
c6782f144a
strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
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* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
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* Copyright (c) 2017-2018 The strace developers.
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "tests.h"
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#include <stdio.h>
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#include <stdint.h>
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#include "test_nlattr.h"
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#define NLMSGERR_ATTR_COOKIE 3
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static void
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init_nlmsgerr(struct nlmsghdr *const nlh, const unsigned int msg_len)
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{
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SET_STRUCT(struct nlmsghdr, nlh,
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.nlmsg_len = msg_len,
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.nlmsg_type = NLMSG_ERROR,
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.nlmsg_flags = NLM_F_REQUEST | NLM_F_CAPPED
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);
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struct nlmsgerr *const err = NLMSG_DATA(nlh);
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SET_STRUCT(struct nlmsgerr, err,
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.error = -13,
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.msg = {
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.nlmsg_len = NLMSG_HDRLEN + 4,
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.nlmsg_type = NLMSG_NOOP,
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.nlmsg_flags = NLM_F_REQUEST,
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}
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);
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}
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static void
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print_nlmsgerr(const unsigned int msg_len)
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{
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printf("{len=%u, type=NLMSG_ERROR"
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", flags=NLM_F_REQUEST|NLM_F_CAPPED"
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", seq=0, pid=0}, {error=-EACCES"
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", msg={len=%u, type=NLMSG_NOOP"
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", flags=NLM_F_REQUEST, seq=0, pid=0}",
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msg_len, NLMSG_HDRLEN + 4);
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}
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int
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main(void)
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{
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skip_if_unavailable("/proc/self/fd/");
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static const uint8_t cookie[] = { 0xab, 0xfe };
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const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
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const unsigned int hdrlen = sizeof(struct nlmsgerr);
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void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
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NLA_HDRLEN + sizeof(cookie));
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TEST_NLATTR(fd, nlh0, hdrlen,
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init_nlmsgerr, print_nlmsgerr,
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NLMSGERR_ATTR_COOKIE,
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sizeof(cookie), cookie, sizeof(cookie),
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printf("[%u, %u]", cookie[0], cookie[1]);
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printf("}"));
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printf("+++ exited with 0 +++\n");
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return 0;
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}
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