643acb6d0e
too small returns ENOMEM, and that reading it into a buffer that is large enough returns the expected sizeof(int) bytes of data.
75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* $NetBSD: t_sysctl.c,v 1.1 2014/08/09 07:04:03 gson Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2014\
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The NetBSD Foundation, inc. All rights reserved.");
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__RCSID("$NetBSD: t_sysctl.c,v 1.1 2014/08/09 07:04:03 gson Exp $");
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#include <sys/sysctl.h>
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#include <errno.h>
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#include <memory.h>
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#include <atf-c.h>
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ATF_TC(bufsize);
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ATF_TC_HEAD(bufsize, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Test sysctl integer reads with different buffer sizes");
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}
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ATF_TC_BODY(bufsize, tc)
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{
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union {
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int int_val;
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unsigned char space[256];
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} buf;
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size_t len;
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for (len = 0; len < sizeof(buf); len++) {
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size_t oldlen = len;
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int r;
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memset(&buf, 0xFF, sizeof(buf));
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r = sysctlbyname("kern.job_control", &buf, &oldlen, 0, (size_t) 0);
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if (len < sizeof(int)) {
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ATF_REQUIRE_EQ(r, -1);
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ATF_REQUIRE_EQ(errno, ENOMEM);
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} else {
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ATF_REQUIRE_EQ(r, 0);
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ATF_REQUIRE_EQ(buf.int_val, 1);
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ATF_REQUIRE_EQ(oldlen, sizeof(int));
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}
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}
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, bufsize);
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return atf_no_error();
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}
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