• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
3  * Copyright (c) 2015-2018 The strace developers.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include "tests.h"
30 #include <stdio.h>
31 #include <stdint.h>
32 #include <unistd.h>
33 #include <limits.h>
34 #include <sys/mman.h>
35 
36 int
main(int ac,char ** av)37 main(int ac, char **av)
38 {
39 	const char *const name = ac > 1 ? av[1] : "mmap";
40 	const intmax_t pagesize = get_page_size();
41 	const unsigned long length1 = pagesize * 6;
42 	const unsigned long length2 = pagesize * 3;
43 	const unsigned long length3 = pagesize * 2;
44 	const int fd = -1;
45 	off_t offset;
46 	void *addr, *p;
47 
48 #if ULONG_MAX > 4294967295UL
49 	offset = 0xcafedeadbeef000ULL & -pagesize;
50 	addr = (void *) (uintmax_t) (0xfacefeed000 & -pagesize);
51 #else
52 	offset = 0xdeadbeef000ULL & -pagesize;
53 	addr = (void *) (unsigned int) (0xfaced000 & -pagesize);
54 #endif
55 	const uintmax_t uoffset =
56 	       sizeof(offset) == sizeof(int) ? (uintmax_t) (unsigned int) offset
57 					     : (uintmax_t) offset;
58 
59 	(void) close(0);
60 	(void) close(0);
61 #if XLAT_RAW
62 	printf("%s(NULL, 0, %#x, %#x, 0, 0) = -1 EBADF (%m)\n",
63 	       name, PROT_NONE, MAP_FILE);
64 #elif XLAT_VERBOSE
65 	printf("%s(NULL, 0, %#x /* PROT_NONE */, %#x /* MAP_FILE */, 0, 0) "
66 	       "= -1 EBADF (%m)\n",
67 	       name, PROT_NONE, MAP_FILE);
68 #else
69 	printf("%s(NULL, 0, PROT_NONE, MAP_FILE, 0, 0) = -1 EBADF (%m)\n",
70 	       name);
71 #endif
72 	mmap(NULL, 0, PROT_NONE, MAP_FILE, 0, 0);
73 
74 	p = mmap(addr, length1, PROT_READ | PROT_WRITE,
75 		 MAP_PRIVATE | MAP_ANONYMOUS, fd, offset);
76 	if (MAP_FAILED == p)
77 		perror_msg_and_fail("mmap");
78 #if XLAT_RAW
79 	printf("%s(%p, %lu, %#x, "
80 	       "%#x|%#x, %d, %#jx) = %p\n",
81 	       name, addr, length1, PROT_READ | PROT_WRITE, MAP_PRIVATE,
82 	       MAP_ANONYMOUS, fd, uoffset, p);
83 #elif XLAT_VERBOSE
84 	printf("%s(%p, %lu, %#x /* PROT_READ|PROT_WRITE */, "
85 	       "%#x /* MAP_PRIVATE */|%#x /* MAP_ANONYMOUS */, %d, %#jx) "
86 	       "= %p\n",
87 	       name, addr, length1, PROT_READ | PROT_WRITE, MAP_PRIVATE,
88 	       MAP_ANONYMOUS, fd, uoffset, p);
89 #else
90 	printf("%s(%p, %lu, PROT_READ|PROT_WRITE, "
91 	       "MAP_PRIVATE|MAP_ANONYMOUS, %d, %#jx) = %p\n",
92 	       name, addr, length1, fd, uoffset, p);
93 #endif
94 
95 	if (msync(p, length1, MS_SYNC))
96 		perror_msg_and_fail("msync");
97 #if XLAT_RAW
98 	printf("msync(%p, %lu, %#x) = 0\n", p, length1, MS_SYNC);
99 #elif XLAT_VERBOSE
100 	printf("msync(%p, %lu, %#x /* MS_SYNC */) = 0\n", p, length1, MS_SYNC);
101 #else
102 	printf("msync(%p, %lu, MS_SYNC) = 0\n", p, length1);
103 #endif
104 
105 	if (mprotect(p, length1, PROT_NONE))
106 		perror_msg_and_fail("mprotect");
107 #if XLAT_RAW
108 	printf("mprotect(%p, %lu, %#x) = 0\n", p, length1, PROT_NONE);
109 #elif XLAT_VERBOSE
110 	printf("mprotect(%p, %lu, %#x /* PROT_NONE */) = 0\n",
111 	       p, length1, PROT_NONE);
112 #else
113 	printf("mprotect(%p, %lu, PROT_NONE) = 0\n", p, length1);
114 #endif
115 
116 	addr = mremap(p, length1, length2, 0);
117 	if (MAP_FAILED == addr)
118 		perror_msg_and_fail("mremap");
119 	printf("mremap(%p, %lu, %lu, 0) = %p\n", p, length1, length2, addr);
120 
121 	p =  mremap(addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
122 		    addr + length2);
123 	if (MAP_FAILED == p)
124 		perror_msg_and_fail("mremap");
125 #if XLAT_RAW
126 	printf("mremap(%p, %lu, %lu, %#x, %p) = %p\n",
127 	       addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
128 	       addr + length2, p);
129 #elif XLAT_VERBOSE
130 	printf("mremap(%p, %lu, %lu, %#x /* MREMAP_MAYMOVE|MREMAP_FIXED */"
131 	       ", %p) = %p\n",
132 	       addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
133 	       addr + length2, p);
134 #else
135 	printf("mremap(%p, %lu, %lu, MREMAP_MAYMOVE|MREMAP_FIXED"
136 	       ", %p) = %p\n", addr, length2, length3, addr + length2, p);
137 #endif
138 
139 	if (munmap(p, length3))
140 		perror_msg_and_fail("munmap");
141 	printf("munmap(%p, %lu) = 0\n", p, length3);
142 
143 	printf("mlockall(");
144 #if XLAT_RAW
145 	printf("%#x", MCL_FUTURE);
146 #elif XLAT_VERBOSE
147 	printf("%#x /* MCL_FUTURE */", MCL_FUTURE);
148 #else
149 	printf("MCL_FUTURE");
150 #endif
151 	printf(") = %s\n", sprintrc(mlockall(MCL_FUTURE)));
152 
153 	puts("+++ exited with 0 +++");
154 	return 0;
155 }
156