2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 const intmax_t pagesize = sysconf(_SC_PAGESIZE);
39 const unsigned long length = pagesize * 3;
44 #if ULONG_MAX > 4294967295UL
45 offset = 0xcafedeadbeef000 & -pagesize;
46 addr = (void *) (uintmax_t) (0xfacefeed000 & -pagesize);
48 offset = 0xdeadbeef000 & -pagesize;
49 addr = (void *) (unsigned int) (0xfaced000 & -pagesize);
52 p = mmap(addr, length, PROT_READ | PROT_WRITE,
53 MAP_PRIVATE | MAP_ANONYMOUS, fd, offset);
54 if (p == MAP_FAILED ||
55 mprotect(p, length, PROT_NONE) ||
59 if (sizeof(offset) == sizeof(int))
60 printf("mmap2?\\(%p, %lu, PROT_READ\\|PROT_WRITE, "
61 "MAP_PRIVATE\\|MAP_ANONYMOUS, %d, %#x\\) = %p\n",
62 addr, length, fd, (unsigned int) offset, p);
64 printf("(mmap2?|old_mmap)\\(%p, %lu, PROT_READ\\|PROT_WRITE, "
65 "MAP_PRIVATE\\|MAP_ANONYMOUS, %d, %#jx\\) = %p\n",
66 addr, length, fd, (uintmax_t) offset, p);
67 printf("mprotect\\(%p, %lu, PROT_NONE\\) += 0\n", p, length);
68 printf("munmap\\(%p, %lu\\) += 0\n", p, length);