1 /* 2 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2016-2017 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 <sys/mman.h> 32 33 static void 34 print_mincore(const unsigned int pages, void *const addr, 35 const size_t size, unsigned char *const vec) 36 { 37 unsigned int i; 38 39 if (mincore(addr, size, vec)) 40 perror_msg_and_skip("mincore"); 41 42 printf("mincore(%p, %zu, [", addr, size); 43 for (i = 0; i < pages; ++i) { 44 if (i) 45 printf(", "); 46 if (i >= DEFAULT_STRLEN) { 47 printf("..."); 48 break; 49 } 50 printf("%u", vec[i] & 1); 51 } 52 puts("]) = 0"); 53 } 54 55 static void 56 test_mincore(const unsigned int pages) 57 { 58 const size_t page_size = get_page_size(); 59 const size_t size = pages * page_size; 60 void *const addr = tail_alloc(size); 61 unsigned char *const vec = tail_alloc(pages); 62 63 mincore(addr, size, NULL); 64 printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n", 65 addr, size, errno2name()); 66 67 print_mincore(pages, addr, size, vec); 68 if (size) 69 print_mincore(pages, addr, size - page_size + 1, vec); 70 } 71 72 int main(void) 73 { 74 test_mincore(1); 75 test_mincore(2); 76 test_mincore(DEFAULT_STRLEN); 77 test_mincore(DEFAULT_STRLEN + 1); 78 79 puts("+++ exited with 0 +++"); 80 return 0; 81 } 82
