1/*	$NetBSD: t_syscall.c,v 1.4 2021/01/18 05:44:20 simonb Exp $	*/
2
3/*-
4 * Copyright (c) 2018 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Martin Husemann.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_syscall.c,v 1.4 2021/01/18 05:44:20 simonb Exp $");
33
34
35#include <atf-c.h>
36#include <stdio.h>
37#include <unistd.h>
38#include <fcntl.h>
39#include <err.h>
40#include <string.h>
41#include <stdlib.h>
42#include <sys/mman.h>
43#include <sys/endian.h>
44#include <sys/syscall.h>
45
46#if !defined(_LP64) && BYTE_ORDER == _BIG_ENDIAN
47#define __SYSCALL_TO_UINTPTR_T(V)	((uintptr_t)((V)>>32))
48#else
49#define __SYSCALL_TO_UINTPTR_T(V)	((uintptr_t)(V))
50#endif
51
52static const char secrect_data[1024] = {
53	"my secret key\n"
54};
55
56#define	FILE_NAME	"dummy"
57
58#ifndef _LP64
59ATF_TC(mmap_syscall);
60
61ATF_TC_HEAD(mmap_syscall, tc)
62{
63	atf_tc_set_md_var(tc, "descr", "Tests mmap(2) via syscall(2)");
64}
65
66ATF_TC_BODY(mmap_syscall, tc)
67{
68	int fd;
69	const char *p;
70
71	fd = open(FILE_NAME, O_RDWR|O_CREAT|O_TRUNC, 0666);
72	ATF_REQUIRE(fd != -1);
73
74	write(fd, secrect_data, sizeof(secrect_data));
75
76	p = (const char *)syscall(SYS_mmap,
77		0, sizeof(secrect_data), PROT_READ, MAP_PRIVATE, fd, 0, 0, 0);
78	ATF_REQUIRE(p != MAP_FAILED);
79
80 	ATF_REQUIRE(strcmp(p, secrect_data) == 0);
81}
82#endif
83
84ATF_TC(mmap___syscall);
85
86ATF_TC_HEAD(mmap___syscall, tc)
87{
88	atf_tc_set_md_var(tc, "descr", "Tests mmap(2) via __syscall(2)");
89}
90
91ATF_TC_BODY(mmap___syscall, tc)
92{
93	int fd;
94	const char *p;
95
96	fd = open(FILE_NAME, O_RDWR|O_CREAT|O_TRUNC, 0666);
97	ATF_REQUIRE(fd != -1);
98
99	write(fd, secrect_data, sizeof(secrect_data));
100
101	p = (const char *)__SYSCALL_TO_UINTPTR_T(__syscall(SYS_mmap,
102		0, sizeof(secrect_data), PROT_READ, MAP_PRIVATE, fd,
103		/* pad*/ 0, (off_t)0));
104	ATF_REQUIRE(p != MAP_FAILED);
105
106	ATF_REQUIRE(strcmp(p, secrect_data) == 0);
107}
108
109ATF_TP_ADD_TCS(tp)
110{
111
112#ifndef _LP64
113	ATF_TP_ADD_TC(tp, mmap_syscall);
114#endif
115	ATF_TP_ADD_TC(tp, mmap___syscall);
116
117	return atf_no_error();
118}
119