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https://github.com/opnsense/src.git
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bcd9c0cfb6
- Use GETENTROPY_MAX instead of hard-coding the value.
- Check for EINVAL instead of EIO
Fixes: 473681a1a506 ("libc: Fix getentropy POSIX 2024 conformance issues")
(cherry picked from commit c5056a3931b41a803a24b89400d38d5c5f843612)
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018 Conrad Meyer <cem@FreeBSD.org>
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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 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 <sys/param.h>
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#include <errno.h>
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#include <limits.h>
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#include <signal.h>
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#include <unistd.h>
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#include <atf-c.h>
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ATF_TC_WITHOUT_HEAD(getentropy_count);
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ATF_TC_BODY(getentropy_count, tc)
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{
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char buf[2];
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int ret;
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/* getentropy(2) does not modify buf past the requested length */
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buf[1] = 0x7C;
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ret = getentropy(buf, 1);
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ATF_REQUIRE_EQ(ret, 0);
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ATF_REQUIRE_EQ(buf[1], 0x7C);
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}
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ATF_TC_WITHOUT_HEAD(getentropy_fault);
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ATF_TC_BODY(getentropy_fault, tc)
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{
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int ret;
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ret = getentropy(NULL, 1);
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ATF_REQUIRE_EQ(ret, -1);
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ATF_REQUIRE_EQ(errno, EFAULT);
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}
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ATF_TC_WITHOUT_HEAD(getentropy_sizes);
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ATF_TC_BODY(getentropy_sizes, tc)
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{
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char buf[512];
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ATF_REQUIRE_EQ(getentropy(buf, sizeof(buf)), -1);
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ATF_REQUIRE_EQ(errno, EINVAL);
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ATF_REQUIRE_EQ(getentropy(buf, GETENTROPY_MAX + 1), -1);
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ATF_REQUIRE_EQ(errno, EINVAL);
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/* Smaller sizes always succeed: */
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ATF_REQUIRE_EQ(getentropy(buf, GETENTROPY_MAX), 0);
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ATF_REQUIRE_EQ(getentropy(buf, GETENTROPY_MAX / 2), 0);
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ATF_REQUIRE_EQ(getentropy(buf, 0), 0);
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}
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ATF_TP_ADD_TCS(tp)
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{
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signal(SIGSYS, SIG_IGN);
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ATF_TP_ADD_TC(tp, getentropy_count);
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ATF_TP_ADD_TC(tp, getentropy_fault);
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ATF_TP_ADD_TC(tp, getentropy_sizes);
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return (atf_no_error());
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}
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