tests/lib/libc/string/t_strchr.c

   1 /* $NetBSD: t_strchr.c,v 1.1 2011/07/07 08:59:33 jruoho Exp $ */
   2
   3 /*
   4  * Written by J.T. Conklin <jtc@acorntoolworks.com>
   5  * Public domain.
   6  */
   7
   8 #include <atf-c.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <dlfcn.h>
  14
  15 static char     *slow_strchr(char *, int);
  16 static void      verify_strchr(char *, int, unsigned int, unsigned int);
  17
  18 char * (*volatile strchr_fn)(const char *, int);
  19
  20 static char *
  21 slow_strchr(char *buf, int ch)
  22 {
  23         unsigned char c = 1;
  24
  25         ch &= 0xff;
  26
  27         for (; c != 0; buf++) {
  28                 c = *buf;
  29                 if (c == ch)
  30                         return buf;
  31         }
  32         return 0;
  33 }
  34
  35 static void
  36 verify_strchr(char *buf, int ch, unsigned int t, unsigned int a)
  37 {
  38         const char *off, *ok_off;
  39
  40         off = strchr_fn(buf, ch);
  41         ok_off = slow_strchr(buf, ch);
  42         if (off == ok_off)
  43                 return;
  44
  45         fprintf(stderr, "test_strchr(\"%s\", %#x) gave %zd not %zd (test %d, "
  46             "alignment %d)\n",
  47             buf, ch, off ? off - buf : -1, ok_off ? ok_off - buf : -1, t, a);
  48
  49         atf_tc_fail("Check stderr for details");
  50 }
  51
  52 ATF_TC(strchr_basic);
  53 ATF_TC_HEAD(strchr_basic, tc)
  54 {
  55
  56         atf_tc_set_md_var(tc, "descr", "Test strchr(3) results");
  57 }
  58
  59 ATF_TC_BODY(strchr_basic, tc)
  60 {
  61         unsigned int t, a;
  62         char *off;
  63         char buf[32];
  64
  65         const char *tab[] = {
  66                 "",
  67                 "a",
  68                 "aa",
  69                 "abc",
  70                 "abcd",
  71                 "abcde",
  72                 "abcdef",
  73                 "abcdefg",
  74                 "abcdefgh",
  75
  76                 "/",
  77                 "//",
  78                 "/a",
  79                 "/a/",
  80                 "/ab",
  81                 "/ab/",
  82                 "/abc",
  83                 "/abc/",
  84                 "/abcd",
  85                 "/abcd/",
  86                 "/abcde",
  87                 "/abcde/",
  88                 "/abcdef",
  89                 "/abcdef/",
  90                 "/abcdefg",
  91                 "/abcdefg/",
  92                 "/abcdefgh",
  93                 "/abcdefgh/",
  94
  95                 "a/",
  96                 "a//",
  97                 "a/a",
  98                 "a/a/",
  99                 "a/ab",
 100                 "a/ab/",
 101                 "a/abc",
 102                 "a/abc/",
 103                 "a/abcd",
 104                 "a/abcd/",
 105                 "a/abcde",
 106                 "a/abcde/",
 107                 "a/abcdef",
 108                 "a/abcdef/",
 109                 "a/abcdefg",
 110                 "a/abcdefg/",
 111                 "a/abcdefgh",
 112                 "a/abcdefgh/",
 113
 114                 "ab/",
 115                 "ab//",
 116                 "ab/a",
 117                 "ab/a/",
 118                 "ab/ab",
 119                 "ab/ab/",
 120                 "ab/abc",
 121                 "ab/abc/",
 122                 "ab/abcd",
 123                 "ab/abcd/",
 124                 "ab/abcde",
 125                 "ab/abcde/",
 126                 "ab/abcdef",
 127                 "ab/abcdef/",
 128                 "ab/abcdefg",
 129                 "ab/abcdefg/",
 130                 "ab/abcdefgh",
 131                 "ab/abcdefgh/",
 132
 133                 "abc/",
 134                 "abc//",
 135                 "abc/a",
 136                 "abc/a/",
 137                 "abc/ab",
 138                 "abc/ab/",
 139                 "abc/abc",
 140                 "abc/abc/",
 141                 "abc/abcd",
 142                 "abc/abcd/",
 143                 "abc/abcde",
 144                 "abc/abcde/",
 145                 "abc/abcdef",
 146                 "abc/abcdef/",
 147                 "abc/abcdefg",
 148                 "abc/abcdefg/",
 149                 "abc/abcdefgh",
 150                 "abc/abcdefgh/",
 151
 152                 "abcd/",
 153                 "abcd//",
 154                 "abcd/a",
 155                 "abcd/a/",
 156                 "abcd/ab",
 157                 "abcd/ab/",
 158                 "abcd/abc",
 159                 "abcd/abc/",
 160                 "abcd/abcd",
 161                 "abcd/abcd/",
 162                 "abcd/abcde",
 163                 "abcd/abcde/",
 164                 "abcd/abcdef",
 165                 "abcd/abcdef/",
 166                 "abcd/abcdefg",
 167                 "abcd/abcdefg/",
 168                 "abcd/abcdefgh",
 169                 "abcd/abcdefgh/",
 170
 171                 "abcde/",
 172                 "abcde//",
 173                 "abcde/a",
 174                 "abcde/a/",
 175                 "abcde/ab",
 176                 "abcde/ab/",
 177                 "abcde/abc",
 178                 "abcde/abc/",
 179                 "abcde/abcd",
 180                 "abcde/abcd/",
 181                 "abcde/abcde",
 182                 "abcde/abcde/",
 183                 "abcde/abcdef",
 184                 "abcde/abcdef/",
 185                 "abcde/abcdefg",
 186                 "abcde/abcdefg/",
 187                 "abcde/abcdefgh",
 188                 "abcde/abcdefgh/",
 189
 190                 "abcdef/",
 191                 "abcdef//",
 192                 "abcdef/a",
 193                 "abcdef/a/",
 194                 "abcdef/ab",
 195                 "abcdef/ab/",
 196                 "abcdef/abc",
 197                 "abcdef/abc/",
 198                 "abcdef/abcd",
 199                 "abcdef/abcd/",
 200                 "abcdef/abcde",
 201                 "abcdef/abcde/",
 202                 "abcdef/abcdef",
 203                 "abcdef/abcdef/",
 204                 "abcdef/abcdefg",
 205                 "abcdef/abcdefg/",
 206                 "abcdef/abcdefgh",
 207                 "abcdef/abcdefgh/",
 208
 209                 "abcdefg/",
 210                 "abcdefg//",
 211                 "abcdefg/a",
 212                 "abcdefg/a/",
 213                 "abcdefg/ab",
 214                 "abcdefg/ab/",
 215                 "abcdefg/abc",
 216                 "abcdefg/abc/",
 217                 "abcdefg/abcd",
 218                 "abcdefg/abcd/",
 219                 "abcdefg/abcde",
 220                 "abcdefg/abcde/",
 221                 "abcdefg/abcdef",
 222                 "abcdefg/abcdef/",
 223                 "abcdefg/abcdefg",
 224                 "abcdefg/abcdefg/",
 225                 "abcdefg/abcdefgh",
 226                 "abcdefg/abcdefgh/",
 227
 228                 "abcdefgh/",
 229                 "abcdefgh//",
 230                 "abcdefgh/a",
 231                 "abcdefgh/a/",
 232                 "abcdefgh/ab",
 233                 "abcdefgh/ab/",
 234                 "abcdefgh/abc",
 235                 "abcdefgh/abc/",
 236                 "abcdefgh/abcd",
 237                 "abcdefgh/abcd/",
 238                 "abcdefgh/abcde",
 239                 "abcdefgh/abcde/",
 240                 "abcdefgh/abcdef",
 241                 "abcdefgh/abcdef/",
 242                 "abcdefgh/abcdefg",
 243                 "abcdefgh/abcdefg/",
 244                 "abcdefgh/abcdefgh",
 245                 "abcdefgh/abcdefgh/",
 246         };
 247
 248
 249         strchr_fn = dlsym(dlopen(0, RTLD_LAZY), "test_strchr");
 250         if (!strchr_fn)
 251                 strchr_fn = strchr;
 252
 253         for (a = 3; a < 3 + sizeof(long); ++a) {
 254                 /* Put char and a \0 before the buffer */
 255                 buf[a-1] = '/';
 256                 buf[a-2] = '0';
 257                 buf[a-3] = 0xff;
 258                 for (t = 0; t < (sizeof(tab) / sizeof(tab[0])); ++t) {
 259                         int len = strlen(tab[t]) + 1;
 260                         memcpy(&buf[a], tab[t], len);
 261
 262                         /* Put the char we are looking for after the \0 */
 263                         buf[a + len] = '/';
 264
 265                         /* Check search for NUL at end of string */
 266                         verify_strchr(buf + a, 0, t, a);
 267
 268                         /* Then for the '/' in the strings */
 269                         verify_strchr(buf + a, '/', t, a);
 270
 271                         /* check zero extension of char arg */
 272                         verify_strchr(buf + a, 0xffffff00 | '/', t, a);
 273
 274                         /* Replace all the '/' with 0xff */
 275                         while ((off = slow_strchr(buf + a, '/')) != NULL)
 276                                 *off = 0xff;
 277
 278                         buf[a + len] = 0xff;
 279
 280                         /* Check we can search for 0xff as well as '/' */
 281                         verify_strchr(buf + a, 0xff, t, a);
 282                 }
 283         }
 284 }
 285
 286 ATF_TP_ADD_TCS(tp)
 287 {
 288
 289         ATF_TP_ADD_TC(tp, strchr_basic);
 290
 291         return atf_no_error();
 292 }