1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018 Conrad Meyer <cem@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <errno.h> 34 #include <signal.h> 35 #include <unistd.h> 36 37 #include <atf-c.h> 38 39 ATF_TC_WITHOUT_HEAD(getentropy_count); 40 ATF_TC_BODY(getentropy_count, tc) 41 { 42 char buf[2]; 43 int ret; 44 45 /* getentropy(2) does not modify buf past the requested length */ 46 buf[1] = 0x7C; 47 ret = getentropy(buf, 1); 48 ATF_REQUIRE_EQ(ret, 0); 49 ATF_REQUIRE_EQ(buf[1], 0x7C); 50 } 51 52 ATF_TC_WITHOUT_HEAD(getentropy_fault); 53 ATF_TC_BODY(getentropy_fault, tc) 54 { 55 int ret; 56 57 ret = getentropy(NULL, 1); 58 ATF_REQUIRE_EQ(ret, -1); 59 ATF_REQUIRE_EQ(errno, EFAULT); 60 } 61 62 ATF_TC_WITHOUT_HEAD(getentropy_sizes); 63 ATF_TC_BODY(getentropy_sizes, tc) 64 { 65 char buf[512]; 66 67 ATF_REQUIRE_EQ(getentropy(buf, sizeof(buf)), -1); 68 ATF_REQUIRE_EQ(errno, EIO); 69 ATF_REQUIRE_EQ(getentropy(buf, 257), -1); 70 ATF_REQUIRE_EQ(errno, EIO); 71 72 /* Smaller sizes always succeed: */ 73 ATF_REQUIRE_EQ(getentropy(buf, 256), 0); 74 ATF_REQUIRE_EQ(getentropy(buf, 128), 0); 75 ATF_REQUIRE_EQ(getentropy(buf, 0), 0); 76 } 77 78 ATF_TP_ADD_TCS(tp) 79 { 80 81 signal(SIGSYS, SIG_IGN); 82 83 ATF_TP_ADD_TC(tp, getentropy_count); 84 ATF_TP_ADD_TC(tp, getentropy_fault); 85 ATF_TP_ADD_TC(tp, getentropy_sizes); 86 return (atf_no_error()); 87 } 88