1 /* 2 * Check decoding of add_key syscall. 3 * 4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 5 * Copyright (c) 2016-2018 The strace developers. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "tests.h" 32 #include <asm/unistd.h> 33 #include "scno.h" 34 35 #ifdef __NR_add_key 36 37 # include <inttypes.h> 38 # include <stdio.h> 39 # include <unistd.h> 40 41 void 42 print_val_str(const void *ptr, const char *str) 43 { 44 if (str) 45 printf("%s, ", str); 46 else 47 printf("%p, ", ptr); 48 } 49 50 void 51 do_add_key(const char *type, const char *type_str, const char *desc, 52 const char *desc_str, const char *payload, const char *payload_str, 53 size_t plen, int32_t keyring, const char *keyring_str) 54 { 55 long rc = syscall(__NR_add_key, type, desc, payload, plen, keyring); 56 const char *errstr = sprintrc(rc); 57 printf("add_key("); 58 print_val_str(type, type_str); 59 print_val_str(desc, desc_str); 60 print_val_str(payload, payload_str); 61 printf("%zu, ", plen); 62 if (keyring_str) 63 printf("%s", keyring_str); 64 else 65 printf("%d", keyring); 66 printf(") = %s\n", errstr); 67 } 68 69 int 70 main(void) 71 { 72 static const char unterminated1[] = { '\1', '\2', '\3', '\4', '\5' }; 73 static const char unterminated2[] = { '\6', '\7', '\10', '\11', '\12' }; 74 static const char unterminated3[] = { '\16', '\17', '\20', '\21', '\22' }; 75 76 char *bogus_type = tail_memdup(unterminated1, sizeof(unterminated1)); 77 char *bogus_desc = tail_memdup(unterminated2, sizeof(unterminated2)); 78 char *bogus_payload = tail_memdup(unterminated3, sizeof(unterminated3)); 79 80 unsigned i; 81 unsigned j; 82 unsigned k; 83 unsigned l; 84 85 struct { 86 const char *type; 87 const char *str; 88 } types[] = { 89 { ARG_STR(NULL) }, 90 { bogus_type + sizeof(unterminated1), NULL }, 91 { bogus_type, NULL }, 92 { ARG_STR("\20\21\22\23\24") }, 93 { ARG_STR("user") }, 94 }; 95 96 struct { 97 const char *desc; 98 const char *str; 99 } descs[] = { 100 { ARG_STR(NULL) }, 101 { bogus_desc + sizeof(unterminated2), NULL }, 102 { bogus_desc, NULL }, 103 { ARG_STR("\25\26\27\30\31") }, 104 { ARG_STR("desc") }, 105 { "overly long description", STRINGIFY("overly long ") "..." }, 106 }; 107 108 struct { 109 const char *pload; 110 const char *str; 111 size_t plen; 112 } payloads[] = { 113 { ARG_STR(NULL), 0 }, 114 { bogus_payload + sizeof(unterminated3), NULL, 115 (size_t) 0xdeadbeefbadc0dedULL }, 116 { bogus_payload, STRINGIFY(""), 0 }, 117 { bogus_payload, STRINGIFY("\16\17\20\21\22"), 5 }, 118 { bogus_payload, NULL, 10 }, 119 { "overly long payload", STRINGIFY("overly long ") "...", 15 }, 120 }; 121 122 struct { 123 uint32_t keyring; 124 const char *str; 125 } keyrings[] = { 126 { ARG_STR(0) }, 127 { ARG_STR(1234567890) }, 128 { ARG_STR(-1234567890) }, 129 { -1, "KEY_SPEC_THREAD_KEYRING" }, 130 }; 131 132 for (i = 0; i < ARRAY_SIZE(types); i++) 133 for (j = 0; j < ARRAY_SIZE(descs); j++) 134 for (k = 0; k < ARRAY_SIZE(payloads); k++) 135 for (l = 0; l < ARRAY_SIZE(keyrings); l++) 136 do_add_key(types[i].type, types[i].str, 137 descs[j].desc, descs[j].str, 138 payloads[k].pload, 139 payloads[k].str, 140 payloads[k].plen, 141 keyrings[l].keyring, 142 keyrings[l].str); 143 144 puts("+++ exited with 0 +++"); 145 146 return 0; 147 } 148 149 #else 150 151 SKIP_MAIN_UNDEFINED("__NR_add_key"); 152 153 #endif 154
