1 /* Test and measure __strcpy_chk functions.
2 Copyright (C) 1999-2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Jakub Jelinek <jakub@redhat.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
21 # define STRCPY_RESULT(dst, len) dst
23 # define TEST_NAME "strcpy_chk"
24 # include "../string/test-string.h"
26 /* This test case implicitly tests the availability of the __chk_fail
27 symbol, which is part of the public ABI and may be used
29 extern void __attribute__ ((noreturn)) __chk_fail (void);
30 char *simple_strcpy_chk (char *, const char *, size_t);
31 extern char *normal_strcpy (char *, const char *, size_t)
33 extern char *__strcpy_chk (char *, const char *, size_t);
35 IMPL (simple_strcpy_chk, 0)
36 IMPL (normal_strcpy, 1)
37 IMPL (__strcpy_chk, 2)
40 simple_strcpy_chk (char *dst, const char *src, size_t len)
45 while ((*dst++ = *src++) != '\0')
57 volatile int chk_fail_ok;
66 longjmp (chk_fail_buf, 1);
72 typedef char *(*proto_t) (char *, const char *, size_t);
75 do_one_test (impl_t *impl, char *dst, const char *src,
76 size_t len, size_t dlen)
85 if (setjmp (chk_fail_buf) == 0)
87 res = CALL (impl, dst, src, dlen);
88 printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
89 impl->name, len, dlen);
96 res = CALL (impl, dst, src, dlen);
98 if (res != STRCPY_RESULT (dst, len))
100 printf ("Wrong result in function %s %p %p\n", impl->name,
101 res, STRCPY_RESULT (dst, len));
106 if (strcmp (dst, src) != 0)
108 printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
109 impl->name, dst, src);
116 hp_timing_t start __attribute ((unused));
117 hp_timing_t stop __attribute ((unused));;
118 hp_timing_t best_time = ~ (hp_timing_t) 0;
121 for (i = 0; i < 32; ++i)
123 HP_TIMING_NOW (start);
124 CALL (impl, dst, src, dlen);
125 HP_TIMING_NOW (stop);
126 HP_TIMING_BEST (best_time, start, stop);
129 printf ("\t%zd", (size_t) best_time);
134 do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
140 if (align1 + len >= page_size)
144 if (align2 + len >= page_size)
147 s1 = (char *) buf1 + align1;
148 s2 = (char *) buf2 + align2;
150 for (i = 0; i < len; i++)
151 s1[i] = 32 + 23 * i % (max_char - 32);
154 if (HP_TIMING_AVAIL && dlen > len)
155 printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
157 FOR_EACH_IMPL (impl, 0)
158 do_one_test (impl, s2, s1, len, dlen);
160 if (HP_TIMING_AVAIL && dlen > len)
165 do_random_tests (void)
167 size_t i, j, n, align1, align2, len, dlen;
168 unsigned char *p1 = buf1 + page_size - 512;
169 unsigned char *p2 = buf2 + page_size - 512;
172 for (n = 0; n < ITERATIONS; n++)
174 align1 = random () & 31;
176 align2 = random () & 31;
178 align2 = align1 + (random () & 24);
179 len = random () & 511;
184 len = 510 - j - (random () & 7);
185 j = len + align1 + 64;
188 for (i = 0; i < j; i++)
190 if (i == len + align1)
194 p1[i] = random () & 255;
195 if (i >= align1 && i < len + align1 && !p1[i])
196 p1[i] = (random () & 127) + 3;
200 switch (random () & 7)
203 dlen = len - (random () & 31);
211 dlen = len + 1 + (random () & 65535);
214 dlen = len + 1 + (random () & 255);
217 dlen = len + 1 + (random () & 31);
220 dlen = len + 1 + (random () & 7);
223 dlen = len + 1 + (random () & 3);
230 FOR_EACH_IMPL (impl, 1)
237 if (setjmp (chk_fail_buf) == 0)
239 res = (unsigned char *)
240 CALL (impl, (char *) p2 + align2,
241 (char *) p1 + align1, dlen);
242 printf ("Iteration %zd - did not __chk_fail\n", n);
249 memset (p2 - 64, '\1', 512 + 64);
250 res = (unsigned char *)
251 CALL (impl, (char *) p2 + align2, (char *) p1 + align1, dlen);
252 if (res != STRCPY_RESULT (p2 + align2, len))
255 Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p\n",
256 n, impl->name, align1, align2, len, res,
257 STRCPY_RESULT (p2 + align2, len));
260 for (j = 0; j < align2 + 64; ++j)
262 if (p2[j - 64] != '\1')
265 Iteration %zd - garbage before, %s (%zd, %zd, %zd)\n",
266 n, impl->name, align1, align2, len);
271 for (j = align2 + len + 1; j < 512; ++j)
276 Iteration %zd - garbage after, %s (%zd, %zd, %zd)\n",
277 n, impl->name, align1, align2, len);
282 if (memcmp (p1 + align1, p2 + align2, len + 1))
285 Iteration %zd - different strings, %s (%zd, %zd, %zd)\n",
286 n, impl->name, align1, align2, len);
299 sa.sa_handler = handler;
301 sigemptyset (&sa.sa_mask);
303 sigaction (SIGABRT, &sa, NULL);
305 /* Avoid all the buffer overflow messages on stderr. */
306 int fd = open (_PATH_DEVNULL, O_WRONLY);
308 close (STDERR_FILENO);
311 dup2 (fd, STDERR_FILENO);
314 setenv ("LIBC_FATAL_STDERR_", "1", 1);
319 FOR_EACH_IMPL (impl, 0)
320 printf ("\t%s", impl->name);
323 for (i = 0; i < 16; ++i)
325 do_test (0, 0, i, i + 1, 127);
326 do_test (0, 0, i, i + 1, 255);
327 do_test (0, i, i, i + 1, 127);
328 do_test (i, 0, i, i + 1, 255);
331 for (i = 1; i < 8; ++i)
333 do_test (0, 0, 8 << i, (8 << i) + 1, 127);
334 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
337 for (i = 1; i < 8; ++i)
339 do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
340 do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
341 do_test (i, i, (8 << i), (8 << i) + 1, 127);
342 do_test (i, i, (8 << i), (8 << i) + 1, 255);
345 for (i = 0; i < 16; ++i)
347 do_test (0, 0, i, i + 256, 127);
348 do_test (0, 0, i, i + 256, 255);
349 do_test (0, i, i, i + 256, 127);
350 do_test (i, 0, i, i + 256, 255);
353 for (i = 1; i < 8; ++i)
355 do_test (0, 0, 8 << i, (8 << i) + 256, 127);
356 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
359 for (i = 1; i < 8; ++i)
361 do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
362 do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
363 do_test (i, i, (8 << i), (8 << i) + 256, 127);
364 do_test (i, i, (8 << i), (8 << i) + 256, 255);
367 for (i = 0; i < 16; ++i)
369 do_test (0, 0, i, i, 127);
370 do_test (0, 0, i, i + 2, 255);
371 do_test (0, i, i, i + 3, 127);
372 do_test (i, 0, i, i + 4, 255);
375 for (i = 1; i < 8; ++i)
377 do_test (0, 0, 8 << i, (8 << i) - 15, 127);
378 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
381 for (i = 1; i < 8; ++i)
383 do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
384 do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
385 do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
386 do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
393 #include "../test-skeleton.c"