1d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* 2d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> 377c3ff8e0644f1e120e4b2ebc7222150b0446f3bElliott Hughes * Copyright (c) 2016-2017 The strace developers. 4d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * All rights reserved. 5d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 6d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Redistribution and use in source and binary forms, with or without 7d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * modification, are permitted provided that the following conditions 8d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * are met: 9d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 1. Redistributions of source code must retain the above copyright 10d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer. 11d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 12d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer in the 13d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * documentation and/or other materials provided with the distribution. 14d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 3. The name of the author may not be used to endorse or promote products 15d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * derived from this software without specific prior written permission. 16d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 17d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes */ 28d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 29d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include "tests.h" 30d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <stdio.h> 31d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <sys/mman.h> 32d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 33d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstatic void 34d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesprint_mincore(const unsigned int pages, void *const addr, 35d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const size_t size, unsigned char *const vec) 36d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 37d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned int i; 38d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 39d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (mincore(addr, size, vec)) 40d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes perror_msg_and_skip("mincore"); 41d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 42d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mincore(%p, %zu, [", addr, size); 43d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes for (i = 0; i < pages; ++i) { 44d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (i) 45d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf(", "); 46d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (i >= DEFAULT_STRLEN) { 47d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("..."); 48d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes break; 49d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes } 50d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("%u", vec[i] & 1); 51d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes } 52d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes puts("]) = 0"); 53d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 54d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 55d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstatic void 56d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughestest_mincore(const unsigned int pages) 57d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 58d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const size_t page_size = get_page_size(); 59d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const size_t size = pages * page_size; 60d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes void *const addr = tail_alloc(size); 61d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned char *const vec = tail_alloc(pages); 62d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 63d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes mincore(addr, size, NULL); 64d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n", 65d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes addr, size, errno2name()); 66d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 67d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes print_mincore(pages, addr, size, vec); 68d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (size) 69d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes print_mincore(pages, addr, size - page_size + 1, vec); 70d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 71d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 72d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesint main(void) 73d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 74d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes test_mincore(1); 75d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes test_mincore(2); 76d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes test_mincore(DEFAULT_STRLEN); 77d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes test_mincore(DEFAULT_STRLEN + 1); 78d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 79d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes puts("+++ exited with 0 +++"); 80d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes return 0; 81d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 82