debug/tst-fortify.c

   1 /* Copyright (C) 2004-2022 Free Software Foundation, Inc.
   2    Copyright The GNU Toolchain Authors.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* This file tests gets.  Force it to be declared.  */
  20 #include <features.h>
  21 #undef __GLIBC_USE_DEPRECATED_GETS
  22 #define __GLIBC_USE_DEPRECATED_GETS 1
  23
  24 #include <assert.h>
  25 #include <fcntl.h>
  26 #include <locale.h>
  27 #include <obstack.h>
  28 #include <setjmp.h>
  29 #include <signal.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <unistd.h>
  34 #include <wchar.h>
  35 #include <sys/poll.h>
  36 #include <sys/select.h>
  37 #include <sys/socket.h>
  38 #include <sys/un.h>
  39
  40 #ifndef _GNU_SOURCE
  41 # define MEMPCPY memcpy
  42 # define WMEMPCPY wmemcpy
  43 # define MEMPCPY_RET(x) 0
  44 # define WMEMPCPY_RET(x) 0
  45 #else
  46 # define MEMPCPY mempcpy
  47 # define WMEMPCPY wmempcpy
  48 # define MEMPCPY_RET(x) __builtin_strlen (x)
  49 # define WMEMPCPY_RET(x) wcslen (x)
  50 #endif
  51
  52 #define obstack_chunk_alloc malloc
  53 #define obstack_chunk_free free
  54
  55 char *temp_filename;
  56 static void do_prepare (void);
  57 static int do_test (void);
  58 #define PREPARE(argc, argv) do_prepare ()
  59 #define TEST_FUNCTION do_test ()
  60 #include "../test-skeleton.c"
  61
  62 static void
  63 do_prepare (void)
  64 {
  65   int temp_fd = create_temp_file ("tst-chk1.", &temp_filename);
  66   if (temp_fd == -1)
  67     {
  68       printf ("cannot create temporary file: %m\n");
  69       exit (1);
  70     }
  71
  72   const char *strs = "abcdefgh\nABCDEFGHI\nabcdefghij\nABCDEFGHIJ";
  73   if ((size_t) write (temp_fd, strs, strlen (strs)) != strlen (strs))
  74     {
  75       puts ("could not write test strings into file");
  76       unlink (temp_filename);
  77       exit (1);
  78     }
  79 }
  80
  81 volatile int chk_fail_ok;
  82 volatile int ret;
  83 jmp_buf chk_fail_buf;
  84
  85 static void
  86 handler (int sig)
  87 {
  88   if (chk_fail_ok)
  89     {
  90       chk_fail_ok = 0;
  91       longjmp (chk_fail_buf, 1);
  92     }
  93   else
  94     _exit (127);
  95 }
  96
  97 #if __USE_FORTIFY_LEVEL == 3
  98 volatile size_t buf_size = 10;
  99 #else
 100 char buf[10];
 101 wchar_t wbuf[10];
 102 #define buf_size sizeof (buf)
 103 #endif
 104
 105 volatile size_t l0;
 106 volatile char *p;
 107 volatile wchar_t *wp;
 108 const char *str1 = "JIHGFEDCBA";
 109 const char *str2 = "F";
 110 const char *str3 = "%s%n%s%n";
 111 const char *str4 = "Hello, ";
 112 const char *str5 = "World!\n";
 113 const wchar_t *wstr1 = L"JIHGFEDCBA";
 114 const wchar_t *wstr2 = L"F";
 115 const wchar_t *wstr3 = L"%s%n%s%n";
 116 const wchar_t *wstr4 = L"Hello, ";
 117 const wchar_t *wstr5 = L"World!\n";
 118 char buf2[10] = "%s";
 119 int num1 = 67;
 120 int num2 = 987654;
 121
 122 #define FAIL() \
 123   do { printf ("Failure on line %d\n", __LINE__); ret = 1; } while (0)
 124 #define CHK_FAIL_START \
 125   chk_fail_ok = 1;                              \
 126   if (! setjmp (chk_fail_buf))                  \
 127     {
 128 #define CHK_FAIL_END \
 129       chk_fail_ok = 0;                          \
 130       FAIL ();                                  \
 131     }
 132 #if __USE_FORTIFY_LEVEL >= 2 && (!defined __cplusplus || defined __va_arg_pack)
 133 # define CHK_FAIL2_START CHK_FAIL_START
 134 # define CHK_FAIL2_END CHK_FAIL_END
 135 #else
 136 # define CHK_FAIL2_START
 137 # define CHK_FAIL2_END
 138 #endif
 139
 140 static int
 141 do_test (void)
 142 {
 143 #if __USE_FORTIFY_LEVEL == 3
 144   char *buf = (char *) malloc (buf_size);
 145   wchar_t *wbuf = (wchar_t *) malloc (buf_size * sizeof (wchar_t));
 146 #endif
 147   set_fortify_handler (handler);
 148
 149   struct A { char buf1[9]; char buf2[1]; } a;
 150   struct wA { wchar_t buf1[9]; wchar_t buf2[1]; } wa;
 151
 152   printf ("Test checking routines at fortify level %d\n",
 153 #ifdef __USE_FORTIFY_LEVEL
 154           (int) __USE_FORTIFY_LEVEL
 155 #else
 156           0
 157 #endif
 158           );
 159
 160 #if defined __USE_FORTIFY_LEVEL && !defined __fortify_function
 161   printf ("Test skipped");
 162   if (l0 == 0)
 163     return 0;
 164 #endif
 165
 166   /* These ops can be done without runtime checking of object size.  */
 167   memcpy (buf, "abcdefghij", 10);
 168   memmove (buf + 1, buf, 9);
 169   if (memcmp (buf, "aabcdefghi", 10))
 170     FAIL ();
 171
 172   memcpy (buf, "abcdefghij", 10);
 173   bcopy (buf, buf + 1, 9);
 174   if (memcmp (buf, "aabcdefghi", 10))
 175     FAIL ();
 176
 177   if (MEMPCPY (buf + 5, "abcde", 5) != buf + 5 + MEMPCPY_RET ("abcde")
 178       || memcmp (buf, "aabcdabcde", 10))
 179     FAIL ();
 180
 181   memset (buf + 8, 'j', 2);
 182   if (memcmp (buf, "aabcdabcjj", 10))
 183     FAIL ();
 184
 185   bzero (buf + 8, 2);
 186   if (memcmp (buf, "aabcdabc\0\0", 10))
 187     FAIL ();
 188
 189   explicit_bzero (buf + 6, 4);
 190   if (memcmp (buf, "aabcda\0\0\0\0", 10))
 191     FAIL ();
 192
 193   strcpy (buf + 4, "EDCBA");
 194   if (memcmp (buf, "aabcEDCBA", 10))
 195     FAIL ();
 196
 197   if (stpcpy (buf + 8, "F") != buf + 9 || memcmp (buf, "aabcEDCBF", 10))
 198     FAIL ();
 199
 200   strncpy (buf + 6, "X", 4);
 201   if (memcmp (buf, "aabcEDX\0\0", 10))
 202     FAIL ();
 203
 204   if (sprintf (buf + 7, "%s", "67") != 2 || memcmp (buf, "aabcEDX67", 10))
 205     FAIL ();
 206
 207   if (snprintf (buf + 7, 3, "%s", "987654") != 6
 208       || memcmp (buf, "aabcEDX98", 10))
 209     FAIL ();
 210
 211   /* These ops need runtime checking, but shouldn't __chk_fail.  */
 212   memcpy (buf, "abcdefghij", l0 + 10);
 213   memmove (buf + 1, buf, l0 + 9);
 214   if (memcmp (buf, "aabcdefghi", 10))
 215     FAIL ();
 216
 217   memcpy (buf, "abcdefghij", l0 + 10);
 218   bcopy (buf, buf + 1, l0 + 9);
 219   if (memcmp (buf, "aabcdefghi", 10))
 220     FAIL ();
 221
 222   if (MEMPCPY (buf + 5, "abcde", l0 + 5) != buf + 5 + MEMPCPY_RET ("abcde")
 223       || memcmp (buf, "aabcdabcde", 10))
 224     FAIL ();
 225
 226   memset (buf + 8, 'j', l0 + 2);
 227   if (memcmp (buf, "aabcdabcjj", 10))
 228     FAIL ();
 229
 230   bzero (buf + 8, l0 + 2);
 231   if (memcmp (buf, "aabcdabc\0\0", 10))
 232     FAIL ();
 233
 234   explicit_bzero (buf + 6, l0 + 4);
 235   if (memcmp (buf, "aabcda\0\0\0\0", 10))
 236     FAIL ();
 237
 238   strcpy (buf + 4, str1 + 5);
 239   if (memcmp (buf, "aabcEDCBA", 10))
 240     FAIL ();
 241
 242   if (stpcpy (buf + 8, str2) != buf + 9 || memcmp (buf, "aabcEDCBF", 10))
 243     FAIL ();
 244
 245   strncpy (buf + 6, "X", l0 + 4);
 246   if (memcmp (buf, "aabcEDX\0\0", 10))
 247     FAIL ();
 248
 249   if (stpncpy (buf + 5, "cd", l0 + 5) != buf + 7
 250       || memcmp (buf, "aabcEcd\0\0", 10))
 251     FAIL ();
 252
 253   if (sprintf (buf + 7, "%d", num1) != 2 || memcmp (buf, "aabcEcd67", 10))
 254     FAIL ();
 255
 256   if (snprintf (buf + 7, 3, "%d", num2) != 6 || memcmp (buf, "aabcEcd98", 10))
 257     FAIL ();
 258
 259   buf[l0 + 8] = '\0';
 260   strcat (buf, "A");
 261   if (memcmp (buf, "aabcEcd9A", 10))
 262     FAIL ();
 263
 264   buf[l0 + 7] = '\0';
 265   strncat (buf, "ZYXWV", l0 + 2);
 266   if (memcmp (buf, "aabcEcdZY", 10))
 267     FAIL ();
 268
 269   /* The following tests are supposed to succeed at all fortify
 270      levels, even though they overflow a.buf1 into a.buf2.  */
 271   memcpy (a.buf1, "abcdefghij", l0 + 10);
 272   memmove (a.buf1 + 1, a.buf1, l0 + 9);
 273   if (memcmp (a.buf1, "aabcdefghi", 10))
 274     FAIL ();
 275
 276   memcpy (a.buf1, "abcdefghij", l0 + 10);
 277   bcopy (a.buf1, a.buf1 + 1, l0 + 9);
 278   if (memcmp (a.buf1, "aabcdefghi", 10))
 279     FAIL ();
 280
 281   if (MEMPCPY (a.buf1 + 5, "abcde", l0 + 5)
 282       != a.buf1 + 5 + MEMPCPY_RET ("abcde")
 283       || memcmp (a.buf1, "aabcdabcde", 10))
 284     FAIL ();
 285
 286   memset (a.buf1 + 8, 'j', l0 + 2);
 287   if (memcmp (a.buf1, "aabcdabcjj", 10))
 288     FAIL ();
 289
 290   bzero (a.buf1 + 8, l0 + 2);
 291   if (memcmp (a.buf1, "aabcdabc\0\0", 10))
 292     FAIL ();
 293
 294   explicit_bzero (a.buf1 + 6, l0 + 4);
 295   if (memcmp (a.buf1, "aabcda\0\0\0\0", 10))
 296     FAIL ();
 297
 298 #if __USE_FORTIFY_LEVEL < 2
 299   /* The following tests are supposed to crash with -D_FORTIFY_SOURCE=2
 300      and sufficient GCC support, as the string operations overflow
 301      from a.buf1 into a.buf2.  */
 302   strcpy (a.buf1 + 4, str1 + 5);
 303   if (memcmp (a.buf1, "aabcEDCBA", 10))
 304     FAIL ();
 305
 306   if (stpcpy (a.buf1 + 8, str2) != a.buf1 + 9
 307       || memcmp (a.buf1, "aabcEDCBF", 10))
 308     FAIL ();
 309
 310   strncpy (a.buf1 + 6, "X", l0 + 4);
 311   if (memcmp (a.buf1, "aabcEDX\0\0", 10))
 312     FAIL ();
 313
 314   if (sprintf (a.buf1 + 7, "%d", num1) != 2
 315       || memcmp (a.buf1, "aabcEDX67", 10))
 316     FAIL ();
 317
 318   if (snprintf (a.buf1 + 7, 3, "%d", num2) != 6
 319       || memcmp (a.buf1, "aabcEDX98", 10))
 320     FAIL ();
 321
 322   a.buf1[l0 + 8] = '\0';
 323   strcat (a.buf1, "A");
 324   if (memcmp (a.buf1, "aabcEDX9A", 10))
 325     FAIL ();
 326
 327   a.buf1[l0 + 7] = '\0';
 328   strncat (a.buf1, "ZYXWV", l0 + 2);
 329   if (memcmp (a.buf1, "aabcEDXZY", 10))
 330     FAIL ();
 331
 332 #endif
 333
 334 #if __USE_FORTIFY_LEVEL >= 1
 335   /* Now check if all buffer overflows are caught at runtime.
 336      N.B. All tests involving a length parameter need to be done
 337      twice: once with the length a compile-time constant, once without.  */
 338
 339   CHK_FAIL_START
 340   memcpy (buf + 1, "abcdefghij", 10);
 341   CHK_FAIL_END
 342
 343   CHK_FAIL_START
 344   memcpy (buf + 1, "abcdefghij", l0 + 10);
 345   CHK_FAIL_END
 346
 347   CHK_FAIL_START
 348   memmove (buf + 2, buf + 1, 9);
 349   CHK_FAIL_END
 350
 351   CHK_FAIL_START
 352   memmove (buf + 2, buf + 1, l0 + 9);
 353   CHK_FAIL_END
 354
 355   CHK_FAIL_START
 356   bcopy (buf + 1, buf + 2, 9);
 357   CHK_FAIL_END
 358
 359   CHK_FAIL_START
 360   bcopy (buf + 1, buf + 2, l0 + 9);
 361   CHK_FAIL_END
 362
 363 #ifdef _GNU_SOURCE
 364   CHK_FAIL_START
 365   p = (char *) mempcpy (buf + 6, "abcde", 5);
 366   CHK_FAIL_END
 367
 368   CHK_FAIL_START
 369   p = (char *) mempcpy (buf + 6, "abcde", l0 + 5);
 370   CHK_FAIL_END
 371 #endif
 372
 373   CHK_FAIL_START
 374   memset (buf + 9, 'j', 2);
 375   CHK_FAIL_END
 376
 377   CHK_FAIL_START
 378   memset (buf + 9, 'j', l0 + 2);
 379   CHK_FAIL_END
 380
 381   CHK_FAIL_START
 382   bzero (buf + 9, 2);
 383   CHK_FAIL_END
 384
 385   CHK_FAIL_START
 386   bzero (buf + 9, l0 + 2);
 387   CHK_FAIL_END
 388
 389   CHK_FAIL_START
 390   explicit_bzero (buf + 9, 2);
 391   CHK_FAIL_END
 392
 393   CHK_FAIL_START
 394   explicit_bzero (buf + 9, l0 + 2);
 395   CHK_FAIL_END
 396
 397   CHK_FAIL_START
 398   strcpy (buf + 5, str1 + 5);
 399   CHK_FAIL_END
 400
 401   CHK_FAIL_START
 402   p = stpcpy (buf + 9, str2);
 403   CHK_FAIL_END
 404
 405   CHK_FAIL_START
 406   strncpy (buf + 7, "X", 4);
 407   CHK_FAIL_END
 408
 409   CHK_FAIL_START
 410   strncpy (buf + 7, "X", l0 + 4);
 411   CHK_FAIL_END
 412
 413   CHK_FAIL_START
 414   stpncpy (buf + 6, "cd", 5);
 415   CHK_FAIL_END
 416
 417   CHK_FAIL_START
 418   stpncpy (buf + 6, "cd", l0 + 5);
 419   CHK_FAIL_END
 420
 421 # if !defined __cplusplus || defined __va_arg_pack
 422   CHK_FAIL_START
 423   sprintf (buf + 8, "%d", num1);
 424   CHK_FAIL_END
 425
 426   CHK_FAIL_START
 427   snprintf (buf + 8, 3, "%d", num2);
 428   CHK_FAIL_END
 429
 430   CHK_FAIL_START
 431   snprintf (buf + 8, l0 + 3, "%d", num2);
 432   CHK_FAIL_END
 433
 434   CHK_FAIL_START
 435   swprintf (wbuf + 8, 3, L"%d", num1);
 436   CHK_FAIL_END
 437
 438   CHK_FAIL_START
 439   swprintf (wbuf + 8, l0 + 3, L"%d", num1);
 440   CHK_FAIL_END
 441 # endif
 442
 443   memcpy (buf, str1 + 2, 9);
 444   CHK_FAIL_START
 445   strcat (buf, "AB");
 446   CHK_FAIL_END
 447
 448   memcpy (buf, str1 + 3, 8);
 449   CHK_FAIL_START
 450   strncat (buf, "ZYXWV", 3);
 451   CHK_FAIL_END
 452
 453   memcpy (buf, str1 + 3, 8);
 454   CHK_FAIL_START
 455   strncat (buf, "ZYXWV", l0 + 3);
 456   CHK_FAIL_END
 457
 458   CHK_FAIL_START
 459   memcpy (a.buf1 + 1, "abcdefghij", 10);
 460   CHK_FAIL_END
 461
 462   CHK_FAIL_START
 463   memcpy (a.buf1 + 1, "abcdefghij", l0 + 10);
 464   CHK_FAIL_END
 465
 466   CHK_FAIL_START
 467   memmove (a.buf1 + 2, a.buf1 + 1, 9);
 468   CHK_FAIL_END
 469
 470   CHK_FAIL_START
 471   memmove (a.buf1 + 2, a.buf1 + 1, l0 + 9);
 472   CHK_FAIL_END
 473
 474   CHK_FAIL_START
 475   bcopy (a.buf1 + 1, a.buf1 + 2, 9);
 476   CHK_FAIL_END
 477
 478   CHK_FAIL_START
 479   bcopy (a.buf1 + 1, a.buf1 + 2, l0 + 9);
 480   CHK_FAIL_END
 481
 482 #ifdef _GNU_SOURCE
 483   CHK_FAIL_START
 484   p = (char *) mempcpy (a.buf1 + 6, "abcde", 5);
 485   CHK_FAIL_END
 486
 487   CHK_FAIL_START
 488   p = (char *) mempcpy (a.buf1 + 6, "abcde", l0 + 5);
 489   CHK_FAIL_END
 490 #endif
 491
 492   CHK_FAIL_START
 493   memset (a.buf1 + 9, 'j', 2);
 494   CHK_FAIL_END
 495
 496   CHK_FAIL_START
 497   memset (a.buf1 + 9, 'j', l0 + 2);
 498   CHK_FAIL_END
 499
 500   CHK_FAIL_START
 501   bzero (a.buf1 + 9, 2);
 502   CHK_FAIL_END
 503
 504   CHK_FAIL_START
 505   bzero (a.buf1 + 9, l0 + 2);
 506   CHK_FAIL_END
 507
 508   CHK_FAIL_START
 509   explicit_bzero (a.buf1 + 9, 2);
 510   CHK_FAIL_END
 511
 512   CHK_FAIL_START
 513   explicit_bzero (a.buf1 + 9, l0 + 2);
 514   CHK_FAIL_END
 515
 516 # if __USE_FORTIFY_LEVEL >= 2
 517 #  define O 0
 518 # else
 519 #  define O 1
 520 # endif
 521
 522   CHK_FAIL_START
 523   strcpy (a.buf1 + (O + 4), str1 + 5);
 524   CHK_FAIL_END
 525
 526   CHK_FAIL_START
 527   p = stpcpy (a.buf1 + (O + 8), str2);
 528   CHK_FAIL_END
 529
 530   CHK_FAIL_START
 531   strncpy (a.buf1 + (O + 6), "X", 4);
 532   CHK_FAIL_END
 533
 534   CHK_FAIL_START
 535   strncpy (a.buf1 + (O + 6), "X", l0 + 4);
 536   CHK_FAIL_END
 537
 538 # if !defined __cplusplus || defined __va_arg_pack
 539   CHK_FAIL_START
 540   sprintf (a.buf1 + (O + 7), "%d", num1);
 541   CHK_FAIL_END
 542
 543   CHK_FAIL_START
 544   snprintf (a.buf1 + (O + 7), 3, "%d", num2);
 545   CHK_FAIL_END
 546
 547   CHK_FAIL_START
 548   snprintf (a.buf1 + (O + 7), l0 + 3, "%d", num2);
 549   CHK_FAIL_END
 550 # endif
 551
 552   memcpy (a.buf1, str1 + (3 - O), 8 + O);
 553   CHK_FAIL_START
 554   strcat (a.buf1, "AB");
 555   CHK_FAIL_END
 556
 557   memcpy (a.buf1, str1 + (4 - O), 7 + O);
 558   CHK_FAIL_START
 559   strncat (a.buf1, "ZYXWV", l0 + 3);
 560   CHK_FAIL_END
 561 #endif
 562
 563
 564   /* These ops can be done without runtime checking of object size.  */
 565   wmemcpy (wbuf, L"abcdefghij", 10);
 566   wmemmove (wbuf + 1, wbuf, 9);
 567   if (wmemcmp (wbuf, L"aabcdefghi", 10))
 568     FAIL ();
 569
 570   if (WMEMPCPY (wbuf + 5, L"abcde", 5) != wbuf + 5 + WMEMPCPY_RET (L"abcde")
 571       || wmemcmp (wbuf, L"aabcdabcde", 10))
 572     FAIL ();
 573
 574   wmemset (wbuf + 8, L'j', 2);
 575   if (wmemcmp (wbuf, L"aabcdabcjj", 10))
 576     FAIL ();
 577
 578   wcscpy (wbuf + 4, L"EDCBA");
 579   if (wmemcmp (wbuf, L"aabcEDCBA", 10))
 580     FAIL ();
 581
 582   if (wcpcpy (wbuf + 8, L"F") != wbuf + 9 || wmemcmp (wbuf, L"aabcEDCBF", 10))
 583     FAIL ();
 584
 585   wcsncpy (wbuf + 6, L"X", 4);
 586   if (wmemcmp (wbuf, L"aabcEDX\0\0", 10))
 587     FAIL ();
 588
 589   if (swprintf (wbuf + 7, 3, L"%ls", L"987654") >= 0
 590       || wmemcmp (wbuf, L"aabcEDX98", 10))
 591     FAIL ();
 592
 593   if (swprintf (wbuf + 7, 3, L"64") != 2
 594       || wmemcmp (wbuf, L"aabcEDX64", 10))
 595     FAIL ();
 596
 597   /* These ops need runtime checking, but shouldn't __chk_fail.  */
 598   wmemcpy (wbuf, L"abcdefghij", l0 + 10);
 599   wmemmove (wbuf + 1, wbuf, l0 + 9);
 600   if (wmemcmp (wbuf, L"aabcdefghi", 10))
 601     FAIL ();
 602
 603   if (WMEMPCPY (wbuf + 5, L"abcde", l0 + 5)
 604       != wbuf + 5 + WMEMPCPY_RET (L"abcde")
 605       || wmemcmp (wbuf, L"aabcdabcde", 10))
 606     FAIL ();
 607
 608   wmemset (wbuf + 8, L'j', l0 + 2);
 609   if (wmemcmp (wbuf, L"aabcdabcjj", 10))
 610     FAIL ();
 611
 612   wcscpy (wbuf + 4, wstr1 + 5);
 613   if (wmemcmp (wbuf, L"aabcEDCBA", 10))
 614     FAIL ();
 615
 616   if (wcpcpy (wbuf + 8, wstr2) != wbuf + 9 || wmemcmp (wbuf, L"aabcEDCBF", 10))
 617     FAIL ();
 618
 619   wcsncpy (wbuf + 6, L"X", l0 + 4);
 620   if (wmemcmp (wbuf, L"aabcEDX\0\0", 10))
 621     FAIL ();
 622
 623   if (wcpncpy (wbuf + 5, L"cd", l0 + 5) != wbuf + 7
 624       || wmemcmp (wbuf, L"aabcEcd\0\0", 10))
 625     FAIL ();
 626
 627   if (swprintf (wbuf + 7, 3, L"%d", num2) >= 0
 628       || wmemcmp (wbuf, L"aabcEcd98", 10))
 629     FAIL ();
 630
 631   wbuf[l0 + 8] = L'\0';
 632   wcscat (wbuf, L"A");
 633   if (wmemcmp (wbuf, L"aabcEcd9A", 10))
 634     FAIL ();
 635
 636   wbuf[l0 + 7] = L'\0';
 637   wcsncat (wbuf, L"ZYXWV", l0 + 2);
 638   if (wmemcmp (wbuf, L"aabcEcdZY", 10))
 639     FAIL ();
 640
 641   wmemcpy (wa.buf1, L"abcdefghij", l0 + 10);
 642   wmemmove (wa.buf1 + 1, wa.buf1, l0 + 9);
 643   if (wmemcmp (wa.buf1, L"aabcdefghi", 10))
 644     FAIL ();
 645
 646   if (WMEMPCPY (wa.buf1 + 5, L"abcde", l0 + 5)
 647       != wa.buf1 + 5 + WMEMPCPY_RET (L"abcde")
 648       || wmemcmp (wa.buf1, L"aabcdabcde", 10))
 649     FAIL ();
 650
 651   wmemset (wa.buf1 + 8, L'j', l0 + 2);
 652   if (wmemcmp (wa.buf1, L"aabcdabcjj", 10))
 653     FAIL ();
 654
 655 #if __USE_FORTIFY_LEVEL < 2
 656   /* The following tests are supposed to crash with -D_FORTIFY_SOURCE=2
 657      and sufficient GCC support, as the string operations overflow
 658      from a.buf1 into a.buf2.  */
 659   wcscpy (wa.buf1 + 4, wstr1 + 5);
 660   if (wmemcmp (wa.buf1, L"aabcEDCBA", 10))
 661     FAIL ();
 662
 663   if (wcpcpy (wa.buf1 + 8, wstr2) != wa.buf1 + 9
 664       || wmemcmp (wa.buf1, L"aabcEDCBF", 10))
 665     FAIL ();
 666
 667   wcsncpy (wa.buf1 + 6, L"X", l0 + 4);
 668   if (wmemcmp (wa.buf1, L"aabcEDX\0\0", 10))
 669     FAIL ();
 670
 671   if (swprintf (wa.buf1 + 7, 3, L"%d", num2) >= 0
 672       || wmemcmp (wa.buf1, L"aabcEDX98", 10))
 673     FAIL ();
 674
 675   wa.buf1[l0 + 8] = L'\0';
 676   wcscat (wa.buf1, L"A");
 677   if (wmemcmp (wa.buf1, L"aabcEDX9A", 10))
 678     FAIL ();
 679
 680   wa.buf1[l0 + 7] = L'\0';
 681   wcsncat (wa.buf1, L"ZYXWV", l0 + 2);
 682   if (wmemcmp (wa.buf1, L"aabcEDXZY", 10))
 683     FAIL ();
 684
 685 #endif
 686
 687 #if __USE_FORTIFY_LEVEL >= 1
 688   /* Now check if all buffer overflows are caught at runtime.
 689      N.B. All tests involving a length parameter need to be done
 690      twice: once with the length a compile-time constant, once without.  */
 691
 692   CHK_FAIL_START
 693   wmemcpy (wbuf + 1, L"abcdefghij", 10);
 694   CHK_FAIL_END
 695
 696   CHK_FAIL_START
 697   wmemcpy (wbuf + 1, L"abcdefghij", l0 + 10);
 698   CHK_FAIL_END
 699
 700   CHK_FAIL_START
 701   wmemcpy (wbuf + 9, L"abcdefghij", 10);
 702   CHK_FAIL_END
 703
 704   CHK_FAIL_START
 705   wmemcpy (wbuf + 9, L"abcdefghij", l0 + 10);
 706   CHK_FAIL_END
 707
 708   CHK_FAIL_START
 709   wmemmove (wbuf + 2, wbuf + 1, 9);
 710   CHK_FAIL_END
 711
 712   CHK_FAIL_START
 713   wmemmove (wbuf + 2, wbuf + 1, l0 + 9);
 714   CHK_FAIL_END
 715
 716 #ifdef _GNU_SOURCE
 717   CHK_FAIL_START
 718   wp = wmempcpy (wbuf + 6, L"abcde", 5);
 719   CHK_FAIL_END
 720
 721   CHK_FAIL_START
 722   wp = wmempcpy (wbuf + 6, L"abcde", l0 + 5);
 723   CHK_FAIL_END
 724 #endif
 725
 726   CHK_FAIL_START
 727   wmemset (wbuf + 9, L'j', 2);
 728   CHK_FAIL_END
 729
 730   CHK_FAIL_START
 731   wmemset (wbuf + 9, L'j', l0 + 2);
 732   CHK_FAIL_END
 733
 734   CHK_FAIL_START
 735   wcscpy (wbuf + 5, wstr1 + 5);
 736   CHK_FAIL_END
 737
 738   CHK_FAIL_START
 739   wp = wcpcpy (wbuf + 9, wstr2);
 740   CHK_FAIL_END
 741
 742   CHK_FAIL_START
 743   wcsncpy (wbuf + 7, L"X", 4);
 744   CHK_FAIL_END
 745
 746   CHK_FAIL_START
 747   wcsncpy (wbuf + 7, L"X", l0 + 4);
 748   CHK_FAIL_END
 749
 750   CHK_FAIL_START
 751   wcsncpy (wbuf + 9, L"XABCDEFGH", 8);
 752   CHK_FAIL_END
 753
 754   CHK_FAIL_START
 755   wcpncpy (wbuf + 9, L"XABCDEFGH", 8);
 756   CHK_FAIL_END
 757
 758   CHK_FAIL_START
 759   wcpncpy (wbuf + 6, L"cd", 5);
 760   CHK_FAIL_END
 761
 762   CHK_FAIL_START
 763   wcpncpy (wbuf + 6, L"cd", l0 + 5);
 764   CHK_FAIL_END
 765
 766   wmemcpy (wbuf, wstr1 + 2, 9);
 767   CHK_FAIL_START
 768   wcscat (wbuf, L"AB");
 769   CHK_FAIL_END
 770
 771   wmemcpy (wbuf, wstr1 + 3, 8);
 772   CHK_FAIL_START
 773   wcsncat (wbuf, L"ZYXWV", l0 + 3);
 774   CHK_FAIL_END
 775
 776   CHK_FAIL_START
 777   wmemcpy (wa.buf1 + 1, L"abcdefghij", 10);
 778   CHK_FAIL_END
 779
 780   CHK_FAIL_START
 781   wmemcpy (wa.buf1 + 1, L"abcdefghij", l0 + 10);
 782   CHK_FAIL_END
 783
 784   CHK_FAIL_START
 785   wmemmove (wa.buf1 + 2, wa.buf1 + 1, 9);
 786   CHK_FAIL_END
 787
 788   CHK_FAIL_START
 789   wmemmove (wa.buf1 + 2, wa.buf1 + 1, l0 + 9);
 790   CHK_FAIL_END
 791
 792 #ifdef _GNU_SOURCE
 793   CHK_FAIL_START
 794   wp = wmempcpy (wa.buf1 + 6, L"abcde", 5);
 795   CHK_FAIL_END
 796
 797   CHK_FAIL_START
 798   wp = wmempcpy (wa.buf1 + 6, L"abcde", l0 + 5);
 799   CHK_FAIL_END
 800 #endif
 801
 802   CHK_FAIL_START
 803   wmemset (wa.buf1 + 9, L'j', 2);
 804   CHK_FAIL_END
 805
 806   CHK_FAIL_START
 807   wmemset (wa.buf1 + 9, L'j', l0 + 2);
 808   CHK_FAIL_END
 809
 810 #if __USE_FORTIFY_LEVEL >= 2
 811 # define O 0
 812 #else
 813 # define O 1
 814 #endif
 815
 816   CHK_FAIL_START
 817   wcscpy (wa.buf1 + (O + 4), wstr1 + 5);
 818   CHK_FAIL_END
 819
 820   CHK_FAIL_START
 821   wp = wcpcpy (wa.buf1 + (O + 8), wstr2);
 822   CHK_FAIL_END
 823
 824   CHK_FAIL_START
 825   wcsncpy (wa.buf1 + (O + 6), L"X", 4);
 826   CHK_FAIL_END
 827
 828   CHK_FAIL_START
 829   wcsncpy (wa.buf1 + (O + 6), L"X", l0 + 4);
 830   CHK_FAIL_END
 831
 832   wmemcpy (wa.buf1, wstr1 + (3 - O), 8 + O);
 833   CHK_FAIL_START
 834   wcscat (wa.buf1, L"AB");
 835   CHK_FAIL_END
 836
 837   wmemcpy (wa.buf1, wstr1 + (4 - O), 7 + O);
 838   CHK_FAIL_START
 839   wcsncat (wa.buf1, L"ZYXWV", l0 + 3);
 840   CHK_FAIL_END
 841 #endif
 842
 843
 844   /* Now checks for %n protection.  */
 845
 846   /* Constant literals passed directly are always ok
 847      (even with warnings about possible bugs from GCC).  */
 848   int n1, n2;
 849   if (sprintf (buf, "%s%n%s%n", str2, &n1, str2, &n2) != 2
 850       || n1 != 1 || n2 != 2)
 851     FAIL ();
 852
 853   /* In this case the format string is not known at compile time,
 854      but resides in read-only memory, so is ok.  */
 855   if (snprintf (buf, 4, str3, str2, &n1, str2, &n2) != 2
 856       || n1 != 1 || n2 != 2)
 857     FAIL ();
 858
 859   strcpy (buf2 + 2, "%n%s%n");
 860   /* When the format string is writable and contains %n,
 861      with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
 862   CHK_FAIL2_START
 863   if (sprintf (buf, buf2, str2, &n1, str2, &n1) != 2)
 864     FAIL ();
 865   CHK_FAIL2_END
 866
 867   CHK_FAIL2_START
 868   if (snprintf (buf, 3, buf2, str2, &n1, str2, &n1) != 2)
 869     FAIL ();
 870   CHK_FAIL2_END
 871
 872   /* But if there is no %n, even writable format string
 873      should work.  */
 874   buf2[6] = '\0';
 875   if (sprintf (buf, buf2 + 4, str2) != 1)
 876     FAIL ();
 877
 878   /* Constant literals passed directly are always ok
 879      (even with warnings about possible bugs from GCC).  */
 880   if (printf ("%s%n%s%n", str4, &n1, str5, &n2) != 14
 881       || n1 != 7 || n2 != 14)
 882     FAIL ();
 883
 884   /* In this case the format string is not known at compile time,
 885      but resides in read-only memory, so is ok.  */
 886   if (printf (str3, str4, &n1, str5, &n2) != 14
 887       || n1 != 7 || n2 != 14)
 888     FAIL ();
 889
 890   strcpy (buf2 + 2, "%n%s%n");
 891   /* When the format string is writable and contains %n,
 892      with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
 893   CHK_FAIL2_START
 894   if (printf (buf2, str4, &n1, str5, &n1) != 14)
 895     FAIL ();
 896   CHK_FAIL2_END
 897
 898   /* But if there is no %n, even writable format string
 899      should work.  */
 900   buf2[6] = '\0';
 901   if (printf (buf2 + 4, str5) != 7)
 902     FAIL ();
 903
 904   FILE *fp = stdout;
 905
 906   /* Constant literals passed directly are always ok
 907      (even with warnings about possible bugs from GCC).  */
 908   if (fprintf (fp, "%s%n%s%n", str4, &n1, str5, &n2) != 14
 909       || n1 != 7 || n2 != 14)
 910     FAIL ();
 911
 912   /* In this case the format string is not known at compile time,
 913      but resides in read-only memory, so is ok.  */
 914   if (fprintf (fp, str3, str4, &n1, str5, &n2) != 14
 915       || n1 != 7 || n2 != 14)
 916     FAIL ();
 917
 918   strcpy (buf2 + 2, "%n%s%n");
 919   /* When the format string is writable and contains %n,
 920      with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
 921   CHK_FAIL2_START
 922   if (fprintf (fp, buf2, str4, &n1, str5, &n1) != 14)
 923     FAIL ();
 924   CHK_FAIL2_END
 925
 926   /* But if there is no %n, even writable format string
 927      should work.  */
 928   buf2[6] = '\0';
 929   if (fprintf (fp, buf2 + 4, str5) != 7)
 930     FAIL ();
 931
 932 #ifdef _GNU_SOURCE
 933   char *my_ptr = NULL;
 934   strcpy (buf2 + 2, "%n%s%n");
 935   /* When the format string is writable and contains %n,
 936      with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
 937   CHK_FAIL2_START
 938   if (asprintf (&my_ptr, buf2, str4, &n1, str5, &n1) != 14)
 939     FAIL ();
 940   else
 941     free (my_ptr);
 942   CHK_FAIL2_END
 943
 944   struct obstack obs;
 945   obstack_init (&obs);
 946   CHK_FAIL2_START
 947   if (obstack_printf (&obs, buf2, str4, &n1, str5, &n1) != 14)
 948     FAIL ();
 949   CHK_FAIL2_END
 950   obstack_free (&obs, NULL);
 951
 952   my_ptr = NULL;
 953   if (asprintf (&my_ptr, "%s%n%s%n", str4, &n1, str5, &n1) != 14)
 954     FAIL ();
 955   else
 956     free (my_ptr);
 957
 958   obstack_init (&obs);
 959   if (obstack_printf (&obs, "%s%n%s%n", str4, &n1, str5, &n1) != 14)
 960     FAIL ();
 961   obstack_free (&obs, NULL);
 962 #endif
 963
 964   if (freopen (temp_filename, "r", stdin) == NULL)
 965     {
 966       puts ("could not open temporary file");
 967       exit (1);
 968     }
 969
 970   if (gets (buf) != buf || memcmp (buf, "abcdefgh", 9))
 971     FAIL ();
 972   if (gets (buf) != buf || memcmp (buf, "ABCDEFGHI", 10))
 973     FAIL ();
 974
 975 #if __USE_FORTIFY_LEVEL >= 1
 976   CHK_FAIL_START
 977   if (gets (buf) != buf)
 978     FAIL ();
 979   CHK_FAIL_END
 980 #endif
 981
 982   rewind (stdin);
 983
 984   if (fgets (buf, buf_size, stdin) != buf
 985       || memcmp (buf, "abcdefgh\n", 10))
 986     FAIL ();
 987   if (fgets (buf, buf_size, stdin) != buf || memcmp (buf, "ABCDEFGHI", 10))
 988     FAIL ();
 989
 990   rewind (stdin);
 991
 992   if (fgets (buf, l0 + buf_size, stdin) != buf
 993       || memcmp (buf, "abcdefgh\n", 10))
 994     FAIL ();
 995
 996 #if __USE_FORTIFY_LEVEL >= 1
 997   CHK_FAIL_START
 998   if (fgets (buf, buf_size + 1, stdin) != buf)
 999     FAIL ();
1000   CHK_FAIL_END
1001
1002   CHK_FAIL_START
1003   if (fgets (buf, l0 + buf_size + 1, stdin) != buf)
1004     FAIL ();
1005   CHK_FAIL_END
1006 #endif
1007
1008   rewind (stdin);
1009
1010 #ifdef _GNU_SOURCE
1011   if (fgets_unlocked (buf, buf_size, stdin) != buf
1012       || memcmp (buf, "abcdefgh\n", 10))
1013     FAIL ();
1014   if (fgets_unlocked (buf, buf_size, stdin) != buf
1015       || memcmp (buf, "ABCDEFGHI", 10))
1016     FAIL ();
1017
1018   rewind (stdin);
1019
1020   if (fgets_unlocked (buf, l0 + buf_size, stdin) != buf
1021       || memcmp (buf, "abcdefgh\n", 10))
1022     FAIL ();
1023
1024 #if __USE_FORTIFY_LEVEL >= 1
1025   CHK_FAIL_START
1026   if (fgets_unlocked (buf, buf_size + 1, stdin) != buf)
1027     FAIL ();
1028   CHK_FAIL_END
1029
1030   CHK_FAIL_START
1031   if (fgets_unlocked (buf, l0 + buf_size + 1, stdin) != buf)
1032     FAIL ();
1033   CHK_FAIL_END
1034 #endif
1035
1036   rewind (stdin);
1037 #endif
1038
1039   if (fread (buf, 1, buf_size, stdin) != buf_size
1040       || memcmp (buf, "abcdefgh\nA", 10))
1041     FAIL ();
1042   if (fread (buf, buf_size, 1, stdin) != 1
1043       || memcmp (buf, "BCDEFGHI\na", 10))
1044     FAIL ();
1045
1046   rewind (stdin);
1047
1048   if (fread (buf, l0 + 1, buf_size, stdin) != buf_size
1049       || memcmp (buf, "abcdefgh\nA", 10))
1050     FAIL ();
1051   if (fread (buf, buf_size, l0 + 1, stdin) != 1
1052       || memcmp (buf, "BCDEFGHI\na", 10))
1053     FAIL ();
1054
1055 #if __USE_FORTIFY_LEVEL >= 1
1056   CHK_FAIL_START
1057   if (fread (buf, 1, buf_size + 1, stdin) != buf_size + 1)
1058     FAIL ();
1059   CHK_FAIL_END
1060
1061   CHK_FAIL_START
1062   if (fread (buf, buf_size + 1, l0 + 1, stdin) != 1)
1063     FAIL ();
1064   CHK_FAIL_END
1065 #endif
1066
1067   rewind (stdin);
1068
1069   if (fread_unlocked (buf, 1, buf_size, stdin) != buf_size
1070       || memcmp (buf, "abcdefgh\nA", 10))
1071     FAIL ();
1072   if (fread_unlocked (buf, buf_size, 1, stdin) != 1
1073       || memcmp (buf, "BCDEFGHI\na", 10))
1074     FAIL ();
1075
1076   rewind (stdin);
1077
1078   if (fread_unlocked (buf, 1, 4, stdin) != 4
1079       || memcmp (buf, "abcdFGHI\na", 10))
1080     FAIL ();
1081   if (fread_unlocked (buf, 4, 1, stdin) != 1
1082       || memcmp (buf, "efghFGHI\na", 10))
1083     FAIL ();
1084
1085   rewind (stdin);
1086
1087   if (fread_unlocked (buf, l0 + 1, buf_size, stdin) != buf_size
1088       || memcmp (buf, "abcdefgh\nA", 10))
1089     FAIL ();
1090   if (fread_unlocked (buf, buf_size, l0 + 1, stdin) != 1
1091       || memcmp (buf, "BCDEFGHI\na", 10))
1092     FAIL ();
1093
1094 #if __USE_FORTIFY_LEVEL >= 1
1095   CHK_FAIL_START
1096   if (fread_unlocked (buf, 1, buf_size + 1, stdin) != buf_size + 1)
1097     FAIL ();
1098   CHK_FAIL_END
1099
1100   CHK_FAIL_START
1101   if (fread_unlocked (buf, buf_size + 1, l0 + 1, stdin) != 1)
1102     FAIL ();
1103   CHK_FAIL_END
1104 #endif
1105
1106   lseek (fileno (stdin), 0, SEEK_SET);
1107
1108   if (read (fileno (stdin), buf, buf_size - 1) != buf_size - 1
1109       || memcmp (buf, "abcdefgh\n", 9))
1110     FAIL ();
1111   if (read (fileno (stdin), buf, buf_size - 1) != buf_size - 1
1112       || memcmp (buf, "ABCDEFGHI", 9))
1113     FAIL ();
1114
1115   lseek (fileno (stdin), 0, SEEK_SET);
1116
1117   if (read (fileno (stdin), buf, l0 + buf_size - 1) != buf_size - 1
1118       || memcmp (buf, "abcdefgh\n", 9))
1119     FAIL ();
1120
1121 #if __USE_FORTIFY_LEVEL >= 1
1122   CHK_FAIL_START
1123   if (read (fileno (stdin), buf, buf_size + 1) != buf_size + 1)
1124     FAIL ();
1125   CHK_FAIL_END
1126
1127   CHK_FAIL_START
1128   if (read (fileno (stdin), buf, l0 + buf_size + 1) != buf_size + 1)
1129     FAIL ();
1130   CHK_FAIL_END
1131 #endif
1132
1133   if (pread (fileno (stdin), buf, buf_size - 1, buf_size - 2)
1134       != buf_size - 1
1135       || memcmp (buf, "\nABCDEFGH", 9))
1136     FAIL ();
1137   if (pread (fileno (stdin), buf, buf_size - 1, 0) != buf_size - 1
1138       || memcmp (buf, "abcdefgh\n", 9))
1139     FAIL ();
1140   if (pread (fileno (stdin), buf, l0 + buf_size - 1, buf_size - 3)
1141       != buf_size - 1
1142       || memcmp (buf, "h\nABCDEFG", 9))
1143     FAIL ();
1144
1145 #if __USE_FORTIFY_LEVEL >= 1
1146   CHK_FAIL_START
1147   if (pread (fileno (stdin), buf, buf_size + 1, 2 * buf_size)
1148       != buf_size + 1)
1149     FAIL ();
1150   CHK_FAIL_END
1151
1152   CHK_FAIL_START
1153   if (pread (fileno (stdin), buf, l0 + buf_size + 1, 2 * buf_size)
1154       != buf_size + 1)
1155     FAIL ();
1156   CHK_FAIL_END
1157 #endif
1158
1159   if (pread64 (fileno (stdin), buf, buf_size - 1, buf_size - 2)
1160       != buf_size - 1
1161       || memcmp (buf, "\nABCDEFGH", 9))
1162     FAIL ();
1163   if (pread64 (fileno (stdin), buf, buf_size - 1, 0) != buf_size - 1
1164       || memcmp (buf, "abcdefgh\n", 9))
1165     FAIL ();
1166   if (pread64 (fileno (stdin), buf, l0 + buf_size - 1, buf_size - 3)
1167       != buf_size - 1
1168       || memcmp (buf, "h\nABCDEFG", 9))
1169     FAIL ();
1170
1171 #if __USE_FORTIFY_LEVEL >= 1
1172   CHK_FAIL_START
1173   if (pread64 (fileno (stdin), buf, buf_size + 1, 2 * buf_size)
1174       != buf_size + 1)
1175     FAIL ();
1176   CHK_FAIL_END
1177
1178   CHK_FAIL_START
1179   if (pread64 (fileno (stdin), buf, l0 + buf_size + 1, 2 * buf_size)
1180       != buf_size + 1)
1181     FAIL ();
1182   CHK_FAIL_END
1183 #endif
1184
1185   if (freopen (temp_filename, "r", stdin) == NULL)
1186     {
1187       puts ("could not open temporary file");
1188       exit (1);
1189     }
1190
1191   if (fseek (stdin, 9 + 10 + 11, SEEK_SET))
1192     {
1193       puts ("could not seek in test file");
1194       exit (1);
1195     }
1196
1197 #if __USE_FORTIFY_LEVEL >= 1
1198   CHK_FAIL_START
1199   if (gets (buf) != buf)
1200     FAIL ();
1201   CHK_FAIL_END
1202 #endif
1203
1204   /* Check whether missing N$ formats are detected.  */
1205   CHK_FAIL2_START
1206   printf ("%3$d\n", 1, 2, 3, 4);
1207   CHK_FAIL2_END
1208
1209   CHK_FAIL2_START
1210   fprintf (stdout, "%3$d\n", 1, 2, 3, 4);
1211   CHK_FAIL2_END
1212
1213   CHK_FAIL2_START
1214   sprintf (buf, "%3$d\n", 1, 2, 3, 4);
1215   CHK_FAIL2_END
1216
1217   CHK_FAIL2_START
1218   snprintf (buf, buf_size, "%3$d\n", 1, 2, 3, 4);
1219   CHK_FAIL2_END
1220
1221   int sp[2];
1222   if (socketpair (PF_UNIX, SOCK_STREAM, 0, sp))
1223     FAIL ();
1224   else
1225     {
1226       const char *sendstr = "abcdefgh\nABCDEFGH\n0123456789\n";
1227       if ((size_t) send (sp[0], sendstr, strlen (sendstr), 0)
1228           != strlen (sendstr))
1229         FAIL ();
1230
1231       char recvbuf[12];
1232       if (recv (sp[1], recvbuf, sizeof recvbuf, MSG_PEEK)
1233           != sizeof recvbuf
1234           || memcmp (recvbuf, sendstr, sizeof recvbuf) != 0)
1235         FAIL ();
1236
1237       if (recv (sp[1], recvbuf + 6, l0 + sizeof recvbuf - 7, MSG_PEEK)
1238           != sizeof recvbuf - 7
1239           || memcmp (recvbuf + 6, sendstr, sizeof recvbuf - 7) != 0)
1240         FAIL ();
1241
1242 #if __USE_FORTIFY_LEVEL >= 1
1243       CHK_FAIL_START
1244       if (recv (sp[1], recvbuf + 1, sizeof recvbuf, MSG_PEEK)
1245           != sizeof recvbuf)
1246         FAIL ();
1247       CHK_FAIL_END
1248
1249       CHK_FAIL_START
1250       if (recv (sp[1], recvbuf + 4, l0 + sizeof recvbuf - 3, MSG_PEEK)
1251           != sizeof recvbuf - 3)
1252         FAIL ();
1253       CHK_FAIL_END
1254 #endif
1255
1256       socklen_t sl;
1257       struct sockaddr_un sa_un;
1258
1259       sl = sizeof (sa_un);
1260       if (recvfrom (sp[1], recvbuf, sizeof recvbuf, MSG_PEEK,
1261                     (struct sockaddr *) &sa_un, &sl)
1262           != sizeof recvbuf
1263           || memcmp (recvbuf, sendstr, sizeof recvbuf) != 0)
1264         FAIL ();
1265
1266       sl = sizeof (sa_un);
1267       if (recvfrom (sp[1], recvbuf + 6, l0 + sizeof recvbuf - 7, MSG_PEEK,
1268                     (struct sockaddr *) &sa_un, &sl) != sizeof recvbuf - 7
1269           || memcmp (recvbuf + 6, sendstr, sizeof recvbuf - 7) != 0)
1270         FAIL ();
1271
1272 #if __USE_FORTIFY_LEVEL >= 1
1273       CHK_FAIL_START
1274       sl = sizeof (sa_un);
1275       if (recvfrom (sp[1], recvbuf + 1, sizeof recvbuf, MSG_PEEK,
1276                     (struct sockaddr *) &sa_un, &sl) != sizeof recvbuf)
1277         FAIL ();
1278       CHK_FAIL_END
1279
1280       CHK_FAIL_START
1281       sl = sizeof (sa_un);
1282       if (recvfrom (sp[1], recvbuf + 4, l0 + sizeof recvbuf - 3, MSG_PEEK,
1283                     (struct sockaddr *) &sa_un, &sl) != sizeof recvbuf - 3)
1284         FAIL ();
1285       CHK_FAIL_END
1286 #endif
1287
1288       close (sp[0]);
1289       close (sp[1]);
1290     }
1291
1292   char fname[] = "/tmp/tst-chk1-dir-XXXXXX\0foo";
1293   char *enddir = strchr (fname, '\0');
1294   if (mkdtemp (fname) == NULL)
1295     {
1296       printf ("mkdtemp failed: %m\n");
1297       return 1;
1298     }
1299   *enddir = '/';
1300   if (symlink ("bar", fname) != 0)
1301     FAIL ();
1302
1303   char readlinkbuf[4];
1304   if (readlink (fname, readlinkbuf, 4) != 3
1305       || memcmp (readlinkbuf, "bar", 3) != 0)
1306     FAIL ();
1307   if (readlink (fname, readlinkbuf + 1, l0 + 3) != 3
1308       || memcmp (readlinkbuf, "bbar", 4) != 0)
1309     FAIL ();
1310
1311 #if __USE_FORTIFY_LEVEL >= 1
1312   CHK_FAIL_START
1313   if (readlink (fname, readlinkbuf + 2, l0 + 3) != 3)
1314     FAIL ();
1315   CHK_FAIL_END
1316
1317   CHK_FAIL_START
1318   if (readlink (fname, readlinkbuf + 3, 4) != 3)
1319     FAIL ();
1320   CHK_FAIL_END
1321 #endif
1322
1323   int tmpfd = open ("/tmp", O_RDONLY | O_DIRECTORY);
1324   if (tmpfd < 0)
1325     FAIL ();
1326
1327   if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf, 4) != 3
1328       || memcmp (readlinkbuf, "bar", 3) != 0)
1329     FAIL ();
1330   if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf + 1,
1331                   l0 + 3) != 3
1332       || memcmp (readlinkbuf, "bbar", 4) != 0)
1333     FAIL ();
1334
1335 #if __USE_FORTIFY_LEVEL >= 1
1336   CHK_FAIL_START
1337   if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf + 2,
1338                   l0 + 3) != 3)
1339     FAIL ();
1340   CHK_FAIL_END
1341
1342   CHK_FAIL_START
1343   if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf + 3,
1344                   4) != 3)
1345     FAIL ();
1346   CHK_FAIL_END
1347 #endif
1348
1349   close (tmpfd);
1350
1351   char *cwd1 = getcwd (NULL, 0);
1352   if (cwd1 == NULL)
1353     FAIL ();
1354
1355   char *cwd2 = getcwd (NULL, 250);
1356   if (cwd2 == NULL)
1357     FAIL ();
1358
1359   if (cwd1 && cwd2)
1360     {
1361       if (strcmp (cwd1, cwd2) != 0)
1362         FAIL ();
1363
1364       *enddir = '\0';
1365       if (chdir (fname))
1366         FAIL ();
1367
1368       char *cwd3 = getcwd (NULL, 0);
1369       if (cwd3 == NULL)
1370         FAIL ();
1371       if (strcmp (fname, cwd3) != 0)
1372         printf ("getcwd after chdir is '%s' != '%s',"
1373                 "get{c,}wd tests skipped\n", cwd3, fname);
1374       else
1375         {
1376           char getcwdbuf[sizeof fname - 3];
1377
1378           char *cwd4 = getcwd (getcwdbuf, sizeof getcwdbuf);
1379           if (cwd4 != getcwdbuf
1380               || strcmp (getcwdbuf, fname) != 0)
1381             FAIL ();
1382
1383           cwd4 = getcwd (getcwdbuf + 1, l0 + sizeof getcwdbuf - 1);
1384           if (cwd4 != getcwdbuf + 1
1385               || getcwdbuf[0] != fname[0]
1386               || strcmp (getcwdbuf + 1, fname) != 0)
1387             FAIL ();
1388
1389 #if __USE_FORTIFY_LEVEL >= 1
1390           CHK_FAIL_START
1391           if (getcwd (getcwdbuf + 2, l0 + sizeof getcwdbuf)
1392               != getcwdbuf + 2)
1393             FAIL ();
1394           CHK_FAIL_END
1395
1396           CHK_FAIL_START
1397           if (getcwd (getcwdbuf + 2, sizeof getcwdbuf)
1398               != getcwdbuf + 2)
1399             FAIL ();
1400           CHK_FAIL_END
1401 #endif
1402
1403           if (getwd (getcwdbuf) != getcwdbuf
1404               || strcmp (getcwdbuf, fname) != 0)
1405             FAIL ();
1406
1407           if (getwd (getcwdbuf + 1) != getcwdbuf + 1
1408               || strcmp (getcwdbuf + 1, fname) != 0)
1409             FAIL ();
1410
1411 #if __USE_FORTIFY_LEVEL >= 1
1412           CHK_FAIL_START
1413           if (getwd (getcwdbuf + 2) != getcwdbuf + 2)
1414             FAIL ();
1415           CHK_FAIL_END
1416 #endif
1417         }
1418
1419       if (chdir (cwd1) != 0)
1420         FAIL ();
1421       free (cwd3);
1422     }
1423
1424   free (cwd1);
1425   free (cwd2);
1426   *enddir = '/';
1427   if (unlink (fname) != 0)
1428     FAIL ();
1429
1430   *enddir = '\0';
1431   if (rmdir (fname) != 0)
1432     FAIL ();
1433
1434
1435 #if PATH_MAX > 0
1436   char largebuf[PATH_MAX];
1437   char *realres = realpath (".", largebuf);
1438   if (realres != largebuf)
1439     FAIL ();
1440
1441 # if __USE_FORTIFY_LEVEL >= 1
1442   CHK_FAIL_START
1443   char realbuf[1];
1444   realres = realpath (".", realbuf);
1445   if (realres != realbuf)
1446     FAIL ();
1447   CHK_FAIL_END
1448 # endif
1449 #endif
1450
1451   if (setlocale (LC_ALL, "de_DE.UTF-8") != NULL)
1452     {
1453       assert (MB_CUR_MAX <= 10);
1454
1455       /* First a simple test.  */
1456       char enough[10];
1457       if (wctomb (enough, L'A') != 1)
1458         FAIL ();
1459
1460 #if __USE_FORTIFY_LEVEL >= 1
1461       /* We know the wchar_t encoding is ISO 10646.  So pick a
1462          character which has a multibyte representation which does not
1463          fit.  */
1464       CHK_FAIL_START
1465       char smallbuf[2];
1466       if (wctomb (smallbuf, L'\x100') != 2)
1467         FAIL ();
1468       CHK_FAIL_END
1469 #endif
1470
1471       mbstate_t s;
1472       memset (&s, '\0', sizeof (s));
1473       if (wcrtomb (enough, L'D', &s) != 1 || enough[0] != 'D')
1474         FAIL ();
1475
1476 #if __USE_FORTIFY_LEVEL >= 1
1477       /* We know the wchar_t encoding is ISO 10646.  So pick a
1478          character which has a multibyte representation which does not
1479          fit.  */
1480       CHK_FAIL_START
1481       char smallbuf[2];
1482       if (wcrtomb (smallbuf, L'\x100', &s) != 2)
1483         FAIL ();
1484       CHK_FAIL_END
1485 #endif
1486
1487       wchar_t wenough[10];
1488       memset (&s, '\0', sizeof (s));
1489       const char *cp = "A";
1490       if (mbsrtowcs (wenough, &cp, 10, &s) != 1
1491           || wcscmp (wenough, L"A") != 0)
1492         FAIL ();
1493
1494       cp = "BC";
1495       if (mbsrtowcs (wenough, &cp, l0 + 10, &s) != 2
1496           || wcscmp (wenough, L"BC") != 0)
1497         FAIL ();
1498
1499 #if __USE_FORTIFY_LEVEL >= 1
1500       CHK_FAIL_START
1501       wchar_t wsmallbuf[2];
1502       cp = "ABC";
1503       mbsrtowcs (wsmallbuf, &cp, 10, &s);
1504       CHK_FAIL_END
1505 #endif
1506
1507       cp = "A";
1508       if (mbstowcs (wenough, cp, 10) != 1
1509           || wcscmp (wenough, L"A") != 0)
1510         FAIL ();
1511
1512       cp = "DEF";
1513       if (mbstowcs (wenough, cp, l0 + 10) != 3
1514           || wcscmp (wenough, L"DEF") != 0)
1515         FAIL ();
1516
1517 #if __USE_FORTIFY_LEVEL >= 1
1518       CHK_FAIL_START
1519       wchar_t wsmallbuf[2];
1520       cp = "ABC";
1521       mbstowcs (wsmallbuf, cp, 10);
1522       CHK_FAIL_END
1523 #endif
1524
1525       memset (&s, '\0', sizeof (s));
1526       cp = "ABC";
1527       wcscpy (wenough, L"DEF");
1528       if (mbsnrtowcs (wenough, &cp, 1, 10, &s) != 1
1529           || wcscmp (wenough, L"AEF") != 0)
1530         FAIL ();
1531
1532       cp = "IJ";
1533       if (mbsnrtowcs (wenough, &cp, 1, l0 + 10, &s) != 1
1534           || wcscmp (wenough, L"IEF") != 0)
1535         FAIL ();
1536
1537 #if __USE_FORTIFY_LEVEL >= 1
1538       CHK_FAIL_START
1539       wchar_t wsmallbuf[2];
1540       cp = "ABC";
1541       mbsnrtowcs (wsmallbuf, &cp, 3, 10, &s);
1542       CHK_FAIL_END
1543 #endif
1544
1545       memset (&s, '\0', sizeof (s));
1546       const wchar_t *wcp = L"A";
1547       if (wcsrtombs (enough, &wcp, 10, &s) != 1
1548           || strcmp (enough, "A") != 0)
1549         FAIL ();
1550
1551       wcp = L"BC";
1552       if (wcsrtombs (enough, &wcp, l0 + 10, &s) != 2
1553           || strcmp (enough, "BC") != 0)
1554         FAIL ();
1555
1556 #if __USE_FORTIFY_LEVEL >= 1
1557       CHK_FAIL_START
1558       char smallbuf[2];
1559       wcp = L"ABC";
1560       wcsrtombs (smallbuf, &wcp, 10, &s);
1561       CHK_FAIL_END
1562 #endif
1563
1564       memset (enough, 'Z', sizeof (enough));
1565       wcp = L"EF";
1566       if (wcstombs (enough, wcp, 10) != 2
1567           || strcmp (enough, "EF") != 0)
1568         FAIL ();
1569
1570       wcp = L"G";
1571       if (wcstombs (enough, wcp, l0 + 10) != 1
1572           || strcmp (enough, "G") != 0)
1573         FAIL ();
1574
1575 #if __USE_FORTIFY_LEVEL >= 1
1576       CHK_FAIL_START
1577       char smallbuf[2];
1578       wcp = L"ABC";
1579       wcstombs (smallbuf, wcp, 10);
1580       CHK_FAIL_END
1581 #endif
1582
1583       memset (&s, '\0', sizeof (s));
1584       wcp = L"AB";
1585       if (wcsnrtombs (enough, &wcp, 1, 10, &s) != 1
1586           || strcmp (enough, "A") != 0)
1587         FAIL ();
1588
1589       wcp = L"BCD";
1590       if (wcsnrtombs (enough, &wcp, 1, l0 + 10, &s) != 1
1591           || strcmp (enough, "B") != 0)
1592         FAIL ();
1593
1594 #if __USE_FORTIFY_LEVEL >= 1
1595       CHK_FAIL_START
1596       char smallbuf[2];
1597       wcp = L"ABC";
1598       wcsnrtombs (smallbuf, &wcp, 3, 10, &s);
1599       CHK_FAIL_END
1600 #endif
1601     }
1602   else
1603     {
1604       puts ("cannot set locale");
1605       ret = 1;
1606     }
1607
1608   int fd;
1609
1610 #ifdef _GNU_SOURCE
1611   fd = posix_openpt (O_RDWR);
1612   if (fd != -1)
1613     {
1614       char enough[1000];
1615       if (ptsname_r (fd, enough, sizeof (enough)) != 0)
1616         FAIL ();
1617
1618 #if __USE_FORTIFY_LEVEL >= 1
1619       CHK_FAIL_START
1620       char smallbuf[2];
1621       if (ptsname_r (fd, smallbuf, sizeof (smallbuf) + 1) == 0)
1622         FAIL ();
1623       CHK_FAIL_END
1624 #endif
1625       close (fd);
1626     }
1627 #endif
1628
1629 #if PATH_MAX > 0
1630   confstr (_CS_GNU_LIBC_VERSION, largebuf, sizeof (largebuf));
1631 # if __USE_FORTIFY_LEVEL >= 1
1632   CHK_FAIL_START
1633   char smallbuf[1];
1634   confstr (_CS_GNU_LIBC_VERSION, smallbuf, sizeof (largebuf));
1635   CHK_FAIL_END
1636 # endif
1637 #endif
1638
1639   gid_t grpslarge[5];
1640   int ngr = getgroups (5, grpslarge);
1641   asm volatile ("" : : "r" (ngr));
1642 #if __USE_FORTIFY_LEVEL >= 1
1643   CHK_FAIL_START
1644   char smallbuf[1];
1645   ngr = getgroups (5, (gid_t *) smallbuf);
1646   asm volatile ("" : : "r" (ngr));
1647   CHK_FAIL_END
1648 #endif
1649
1650   fd = open (_PATH_TTY, O_RDONLY);
1651   if (fd != -1)
1652     {
1653       char enough[1000];
1654       if (ttyname_r (fd, enough, sizeof (enough)) != 0)
1655         FAIL ();
1656
1657 #if __USE_FORTIFY_LEVEL >= 1
1658       CHK_FAIL_START
1659       char smallbuf[2];
1660       if (ttyname_r (fd, smallbuf, sizeof (smallbuf) + 1) == 0)
1661         FAIL ();
1662       CHK_FAIL_END
1663 #endif
1664       close (fd);
1665     }
1666
1667   char hostnamelarge[1000];
1668   gethostname (hostnamelarge, sizeof (hostnamelarge));
1669 #if __USE_FORTIFY_LEVEL >= 1
1670   CHK_FAIL_START
1671   char smallbuf[1];
1672   gethostname (smallbuf, sizeof (hostnamelarge));
1673   CHK_FAIL_END
1674 #endif
1675
1676   char loginlarge[1000];
1677   getlogin_r (loginlarge, sizeof (hostnamelarge));
1678 #if __USE_FORTIFY_LEVEL >= 1
1679   CHK_FAIL_START
1680   char smallbuf[1];
1681   getlogin_r (smallbuf, sizeof (loginlarge));
1682   CHK_FAIL_END
1683 #endif
1684
1685   char domainnamelarge[1000];
1686   int res = getdomainname (domainnamelarge, sizeof (domainnamelarge));
1687   asm volatile ("" : : "r" (res));
1688 #if __USE_FORTIFY_LEVEL >= 1
1689   CHK_FAIL_START
1690   char smallbuf[1];
1691   res = getdomainname (smallbuf, sizeof (domainnamelarge));
1692   asm volatile ("" : : "r" (res));
1693   CHK_FAIL_END
1694 #endif
1695
1696   fd_set s;
1697   FD_ZERO (&s);
1698
1699   FD_SET (FD_SETSIZE - 1, &s);
1700 #if __USE_FORTIFY_LEVEL >= 1
1701   CHK_FAIL_START
1702   FD_SET (FD_SETSIZE, &s);
1703   CHK_FAIL_END
1704
1705   CHK_FAIL_START
1706   FD_SET (l0 + FD_SETSIZE, &s);
1707   CHK_FAIL_END
1708 #endif
1709
1710   FD_CLR (FD_SETSIZE - 1, &s);
1711 #if __USE_FORTIFY_LEVEL >= 1
1712   CHK_FAIL_START
1713   FD_CLR (FD_SETSIZE, &s);
1714   CHK_FAIL_END
1715
1716   CHK_FAIL_START
1717   FD_SET (l0 + FD_SETSIZE, &s);
1718   CHK_FAIL_END
1719 #endif
1720
1721   FD_ISSET (FD_SETSIZE - 1, &s);
1722 #if __USE_FORTIFY_LEVEL >= 1
1723   CHK_FAIL_START
1724   FD_ISSET (FD_SETSIZE, &s);
1725   CHK_FAIL_END
1726
1727   CHK_FAIL_START
1728   FD_ISSET (l0 + FD_SETSIZE, &s);
1729   CHK_FAIL_END
1730 #endif
1731
1732   struct pollfd fds[1];
1733   fds[0].fd = STDOUT_FILENO;
1734   fds[0].events = POLLOUT;
1735   poll (fds, 1, 0);
1736 #if __USE_FORTIFY_LEVEL >= 1
1737   CHK_FAIL_START
1738   poll (fds, 2, 0);
1739   CHK_FAIL_END
1740
1741   CHK_FAIL_START
1742   poll (fds, l0 + 2, 0);
1743   CHK_FAIL_END
1744 #endif
1745 #ifdef _GNU_SOURCE
1746   ppoll (fds, 1, NULL, NULL);
1747 # if __USE_FORTIFY_LEVEL >= 1
1748   CHK_FAIL_START
1749   ppoll (fds, 2, NULL, NULL);
1750   CHK_FAIL_END
1751
1752   CHK_FAIL_START
1753   ppoll (fds, l0 + 2, NULL, NULL);
1754   CHK_FAIL_END
1755 # endif
1756 #endif
1757
1758   return ret;
1759 }