1 /* 2 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 15 * 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. 26 */ 27 28 #include "tests.h" 29 #include <stdio.h> 30 #include <sys/mman.h> 31 32 static void 33 print_mincore(const unsigned int pages, void *const addr, 34 const size_t size, unsigned char *const vec) 35 { 36 unsigned int i; 37 38 if (mincore(addr, size, vec)) 39 perror_msg_and_skip("mincore"); 40 41 printf("mincore(%p, %zu, [", addr, size); 42 for (i = 0; i < pages; ++i) { 43 if (i) 44 printf(", "); 45 if (i >= DEFAULT_STRLEN) { 46 printf("..."); 47 break; 48 } 49 printf("%u", vec[i] & 1); 50 } 51 puts("]) = 0"); 52 } 53 54 static void 55 test_mincore(const unsigned int pages) 56 { 57 const size_t page_size = get_page_size(); 58 const size_t size = pages * page_size; 59 void *const addr = tail_alloc(size); 60 unsigned char *const vec = tail_alloc(pages); 61 62 mincore(addr, size, NULL); 63 printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n", 64 addr, size, errno2name()); 65 66 print_mincore(pages, addr, size, vec); 67 if (size) 68 print_mincore(pages, addr, size - page_size + 1, vec); 69 } 70 71 int main(void) 72 { 73 test_mincore(1); 74 test_mincore(2); 75 test_mincore(DEFAULT_STRLEN); 76 test_mincore(DEFAULT_STRLEN + 1); 77 78 puts("+++ exited with 0 +++"); 79 return 0; 80 } 81
