1 /* 2 * Test printstrn/umoven. 3 * 4 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "tests.h" 31 32 #include <stdio.h> 33 #include <string.h> 34 #include <unistd.h> 35 #include <asm/unistd.h> 36 37 #include "scno.h" 38 #include "test_ucopy.h" 39 40 static const char *errstr; 41 42 static void add_key(const char *addr, const unsigned int len) 43 { 44 errstr = sprintrc(syscall(__NR_add_key, 0, 0, addr, len, -1)); 45 } 46 47 static void 48 test_printstrn_at(char *const p, const unsigned int test_max) 49 { 50 unsigned int i; 51 52 for (i = 0; i <= test_max; ++i) { 53 add_key(p + (test_max - i), i); 54 printf("add_key(NULL, NULL, \"%.*s\", %u" 55 ", KEY_SPEC_THREAD_KEYRING) = %s\n", 56 (int) i, p + (test_max - i), i, errstr); 57 } 58 } 59 60 static void 61 test_efault(const unsigned int test_max) 62 { 63 char *p = tail_alloc(test_max); 64 memset(p, '/', test_max); 65 unsigned int i; 66 67 for (i = 0; i <= test_max; ++i) { 68 unsigned int j; 69 for (j = 1; j <= sizeof(long); ++j) { 70 add_key(p + (test_max - i), i + j); 71 printf("add_key(NULL, NULL, %p, %u" 72 ", KEY_SPEC_THREAD_KEYRING) = %s\n", 73 p + (test_max - i), i + j, errstr); 74 } 75 } 76 } 77 78 void 79 test_printstrn(const unsigned int test_max) 80 { 81 /* 82 * abcdefgh| 83 * abcdefg|h 84 * abcdef|gh 85 * abcde|fgh 86 * abcd|efgh 87 * abc|defgh 88 * ab|cdefgh 89 * a|bcdefgh 90 * |abcdefgh 91 */ 92 const unsigned int page_size = get_page_size(); 93 char *p = tail_alloc(test_max + page_size); 94 fill_memory_ex(p, test_max + page_size, 'a', 'z' - 'a' + 1); 95 96 unsigned int i; 97 for (i = 1; i <= sizeof(long); ++i) 98 test_printstrn_at(p + i, test_max); 99 for (i = 0; i < sizeof(long); ++i) 100 test_printstrn_at(p + page_size - i, test_max); 101 test_efault(test_max); 102 } 103