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