2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2015-2018 The strace developers.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
37 main(int ac, char **av)
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;
48 #if ULONG_MAX > 4294967295UL
49 offset = 0xcafedeadbeef000ULL & -pagesize;
50 addr = (void *) (uintmax_t) (0xfacefeed000 & -pagesize);
52 offset = 0xdeadbeef000ULL & -pagesize;
53 addr = (void *) (unsigned int) (0xfaced000 & -pagesize);
55 const uintmax_t uoffset =
56 sizeof(offset) == sizeof(int) ? (uintmax_t) (unsigned int) offset
62 printf("%s(NULL, 0, %#x, %#x, 0, 0) = -1 EBADF (%m)\n",
63 name, PROT_NONE, MAP_FILE);
65 printf("%s(NULL, 0, %#x /* PROT_NONE */, %#x /* MAP_FILE */, 0, 0) "
67 name, PROT_NONE, MAP_FILE);
69 printf("%s(NULL, 0, PROT_NONE, MAP_FILE, 0, 0) = -1 EBADF (%m)\n",
72 mmap(NULL, 0, PROT_NONE, MAP_FILE, 0, 0);
74 p = mmap(addr, length1, PROT_READ | PROT_WRITE,
75 MAP_PRIVATE | MAP_ANONYMOUS, fd, offset);
77 perror_msg_and_fail("mmap");
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);
84 printf("%s(%p, %lu, %#x /* PROT_READ|PROT_WRITE */, "
85 "%#x /* MAP_PRIVATE */|%#x /* MAP_ANONYMOUS */, %d, %#jx) "
87 name, addr, length1, PROT_READ | PROT_WRITE, MAP_PRIVATE,
88 MAP_ANONYMOUS, fd, uoffset, p);
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);
95 if (msync(p, length1, MS_SYNC))
96 perror_msg_and_fail("msync");
98 printf("msync(%p, %lu, %#x) = 0\n", p, length1, MS_SYNC);
100 printf("msync(%p, %lu, %#x /* MS_SYNC */) = 0\n", p, length1, MS_SYNC);
102 printf("msync(%p, %lu, MS_SYNC) = 0\n", p, length1);
105 if (mprotect(p, length1, PROT_NONE))
106 perror_msg_and_fail("mprotect");
108 printf("mprotect(%p, %lu, %#x) = 0\n", p, length1, PROT_NONE);
110 printf("mprotect(%p, %lu, %#x /* PROT_NONE */) = 0\n",
111 p, length1, PROT_NONE);
113 printf("mprotect(%p, %lu, PROT_NONE) = 0\n", p, length1);
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);
121 p = mremap(addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
124 perror_msg_and_fail("mremap");
126 printf("mremap(%p, %lu, %lu, %#x, %p) = %p\n",
127 addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
130 printf("mremap(%p, %lu, %lu, %#x /* MREMAP_MAYMOVE|MREMAP_FIXED */"
132 addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
135 printf("mremap(%p, %lu, %lu, MREMAP_MAYMOVE|MREMAP_FIXED"
136 ", %p) = %p\n", addr, length2, length3, addr + length2, p);
139 if (munmap(p, length3))
140 perror_msg_and_fail("munmap");
141 printf("munmap(%p, %lu) = 0\n", p, length3);
143 if (mlockall(MCL_FUTURE))
144 perror_msg_and_fail("mlockall");
146 printf("mlockall(%#x) = 0\n", MCL_FUTURE);
148 printf("mlockall(%#x /* MCL_FUTURE */) = 0\n", MCL_FUTURE);
150 puts("mlockall(MCL_FUTURE) = 0");
153 puts("+++ exited with 0 +++");