1/* testlib.c -- test functions for libbacktrace library 2 Copyright (C) 2012-2022 Free Software Foundation, Inc. 3 Written by Ian Lance Taylor, Google. 4 5Redistribution and use in source and binary forms, with or without 6modification, are permitted provided that the following conditions are 7met: 8 9 (1) Redistributions of source code must retain the above copyright 10 notice, this list of conditions and the following disclaimer. 11 12 (2) Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in 14 the documentation and/or other materials provided with the 15 distribution. 16 17 (3) The name of the author may not be used to 18 endorse or promote products derived from this software without 19 specific prior written permission. 20 21THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 25INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 27SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 29STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31POSSIBILITY OF SUCH DAMAGE. */ 32 33#include <assert.h> 34#include <stdio.h> 35#include <stdlib.h> 36#include <string.h> 37 38#include "filenames.h" 39 40#include "backtrace.h" 41 42#include "testlib.h" 43 44/* The backtrace state. */ 45 46void *state; 47 48/* The number of failures. */ 49 50int failures; 51 52/* Return the base name in a path. */ 53 54const char * 55base (const char *p) 56{ 57 const char *last; 58 const char *s; 59 60 last = NULL; 61 for (s = p; *s != '\0'; ++s) 62 { 63 if (IS_DIR_SEPARATOR (*s)) 64 last = s + 1; 65 } 66 return last != NULL ? last : p; 67} 68 69/* Check an entry in a struct info array. */ 70 71void 72check (const char *name, int index, const struct info *all, int want_lineno, 73 const char *want_function, const char *want_file, int *failed) 74{ 75 if (*failed) 76 return; 77 if (all[index].filename == NULL || all[index].function == NULL) 78 { 79 fprintf (stderr, "%s: [%d]: missing file name or function name\n", 80 name, index); 81 *failed = 1; 82 return; 83 } 84 if (strcmp (base (all[index].filename), want_file) != 0) 85 { 86 fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index, 87 all[index].filename, want_file); 88 *failed = 1; 89 } 90 if (all[index].lineno != want_lineno) 91 { 92 fprintf (stderr, "%s: [%d]: got %d expected %d\n", name, index, 93 all[index].lineno, want_lineno); 94 *failed = 1; 95 } 96 if (strcmp (all[index].function, want_function) != 0) 97 { 98 fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index, 99 all[index].function, want_function); 100 *failed = 1; 101 } 102} 103 104/* The backtrace callback function. */ 105 106int 107callback_one (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED, 108 const char *filename, int lineno, const char *function) 109{ 110 struct bdata *data = (struct bdata *) vdata; 111 struct info *p; 112 113 if (data->index >= data->max) 114 { 115 fprintf (stderr, "callback_one: callback called too many times\n"); 116 data->failed = 1; 117 return 1; 118 } 119 120 p = &data->all[data->index]; 121 if (filename == NULL) 122 p->filename = NULL; 123 else 124 { 125 p->filename = strdup (filename); 126 assert (p->filename != NULL); 127 } 128 p->lineno = lineno; 129 if (function == NULL) 130 p->function = NULL; 131 else 132 { 133 p->function = strdup (function); 134 assert (p->function != NULL); 135 } 136 ++data->index; 137 138 return 0; 139} 140 141/* An error callback passed to backtrace. */ 142 143void 144error_callback_one (void *vdata, const char *msg, int errnum) 145{ 146 struct bdata *data = (struct bdata *) vdata; 147 148 fprintf (stderr, "%s", msg); 149 if (errnum > 0) 150 fprintf (stderr, ": %s", strerror (errnum)); 151 fprintf (stderr, "\n"); 152 data->failed = 1; 153} 154 155/* The backtrace_simple callback function. */ 156 157int 158callback_two (void *vdata, uintptr_t pc) 159{ 160 struct sdata *data = (struct sdata *) vdata; 161 162 if (data->index >= data->max) 163 { 164 fprintf (stderr, "callback_two: callback called too many times\n"); 165 data->failed = 1; 166 return 1; 167 } 168 169 data->addrs[data->index] = pc; 170 ++data->index; 171 172 return 0; 173} 174 175/* An error callback passed to backtrace_simple. */ 176 177void 178error_callback_two (void *vdata, const char *msg, int errnum) 179{ 180 struct sdata *data = (struct sdata *) vdata; 181 182 fprintf (stderr, "%s", msg); 183 if (errnum > 0) 184 fprintf (stderr, ": %s", strerror (errnum)); 185 fprintf (stderr, "\n"); 186 data->failed = 1; 187} 188 189/* The backtrace_syminfo callback function. */ 190 191void 192callback_three (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED, 193 const char *symname, uintptr_t symval, 194 uintptr_t symsize) 195{ 196 struct symdata *data = (struct symdata *) vdata; 197 198 if (symname == NULL) 199 data->name = NULL; 200 else 201 { 202 data->name = strdup (symname); 203 assert (data->name != NULL); 204 } 205 data->val = symval; 206 data->size = symsize; 207} 208 209/* The backtrace_syminfo error callback function. */ 210 211void 212error_callback_three (void *vdata, const char *msg, int errnum) 213{ 214 struct symdata *data = (struct symdata *) vdata; 215 216 fprintf (stderr, "%s", msg); 217 if (errnum > 0) 218 fprintf (stderr, ": %s", strerror (errnum)); 219 fprintf (stderr, "\n"); 220 data->failed = 1; 221} 222 223/* The backtrace_create_state error callback function. */ 224 225void 226error_callback_create (void *data ATTRIBUTE_UNUSED, const char *msg, 227 int errnum) 228{ 229 fprintf (stderr, "%s", msg); 230 if (errnum > 0) 231 fprintf (stderr, ": %s", strerror (errnum)); 232 fprintf (stderr, "\n"); 233 exit (EXIT_FAILURE); 234} 235