114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2023 Alexander V. Chernikov
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <tests/ktest.h>
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#include <sys/cdefs.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <netlink/netlink.h>
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#include <netlink/netlink_ctl.h>
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#include <netlink/netlink_var.h>
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#include <netlink/netlink_message_writer.h>
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#define KTEST_CALLER
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#include <netlink/ktest_netlink_message_writer.h>
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#ifdef INVARIANTS
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struct test_nlbuf_attrs {
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uint32_t size;
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uint32_t expected_avail;
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int waitok;
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};
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#define _OUT(_field) offsetof(struct test_nlbuf_attrs, _field)
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static const struct nlattr_parser nla_p_nlbuf_w[] = {
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{ .type = 1, .off = _OUT(size), .cb = nlattr_get_uint32 },
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{ .type = 2, .off = _OUT(expected_avail), .cb = nlattr_get_uint32 },
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{ .type = 3, .off = _OUT(waitok), .cb = nlattr_get_uint32 },
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};
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#undef _OUT
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NL_DECLARE_ATTR_PARSER(nlbuf_w_parser, nla_p_nlbuf_w);
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static int
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test_nlbuf_parser(struct ktest_test_context *ctx, struct nlattr *nla)
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{
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struct test_nlbuf_attrs *attrs = npt_alloc(ctx->npt, sizeof(*attrs));
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ctx->arg = attrs;
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if (attrs != NULL)
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return (nl_parse_nested(nla, &nlbuf_w_parser, ctx->npt, attrs));
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return (ENOMEM);
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}
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static int
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test_nlbuf_writer_allocation(struct ktest_test_context *ctx)
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{
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struct test_nlbuf_attrs *attrs = ctx->arg;
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struct nl_writer nw = {};
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u_int alloc_len;
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bool ret;
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ret = nlmsg_get_buf_wrapper(&nw, attrs->size, attrs->waitok);
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if (!ret)
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return (EINVAL);
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alloc_len = nw.buf->buflen;
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KTEST_LOG(ctx, "requested %u, allocated %d", attrs->size, alloc_len);
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/* Mark enomem to avoid reallocation */
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nw.enomem = true;
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if (nlmsg_reserve_data(&nw, alloc_len, void *) == NULL) {
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KTEST_LOG(ctx, "unable to get %d bytes from the writer", alloc_len);
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return (EINVAL);
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}
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nl_buf_free(nw.buf);
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if (alloc_len < attrs->expected_avail) {
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KTEST_LOG(ctx, "alloc_len %d, expected %u",
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alloc_len, attrs->expected_avail);
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return (EINVAL);
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}
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return (0);
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}
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#endif
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static const struct ktest_test_info tests[] = {
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#ifdef INVARIANTS
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{
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.name = "test_nlbuf_writer_allocation",
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.desc = "test different buffer sizes in the netlink writer",
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.func = &test_nlbuf_writer_allocation,
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.parse = &test_nlbuf_parser,
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},
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#endif
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};
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KTEST_MODULE_DECLARE(ktest_netlink_message_writer, tests);
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