1 /* Test and measure __strcpy_chk functions.
2 Copyright (C) 1999, 2002, 2003, 2004 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 # define STRCPY_RESULT(dst, len) dst
24 # include "../string/test-string.h"
26 extern void __attribute__ ((noreturn)) __chk_fail (void);
27 char *simple_strcpy_chk (char *, const char *, size_t);
28 extern char *normal_strcpy (char *, const char *, size_t)
30 extern char *__strcpy_chk (char *, const char *, size_t);
32 IMPL (simple_strcpy_chk, 0)
33 IMPL (normal_strcpy, 1)
34 IMPL (__strcpy_chk, 2)
37 simple_strcpy_chk (char *dst, const char *src, size_t len)
42 while ((*dst++ = *src++) != '\0')
54 volatile int chk_fail_ok;
63 longjmp (chk_fail_buf, 1);
69 typedef char *(*proto_t) (char *, const char *, size_t);
72 do_one_test (impl_t *impl, char *dst, const char *src,
73 size_t len, size_t dlen)
82 if (setjmp (chk_fail_buf) == 0)
84 res = CALL (impl, dst, src, dlen);
85 printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
86 impl->name, len, dlen);
93 res = CALL (impl, dst, src, dlen);
95 if (res != STRCPY_RESULT (dst, len))
97 printf ("Wrong result in function %s %p %p\n", impl->name,
98 res, STRCPY_RESULT (dst, len));
103 if (strcmp (dst, src) != 0)
105 printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
106 impl->name, dst, src);
113 hp_timing_t start __attribute ((unused));
114 hp_timing_t stop __attribute ((unused));;
115 hp_timing_t best_time = ~ (hp_timing_t) 0;
118 for (i = 0; i < 32; ++i)
120 HP_TIMING_NOW (start);
121 CALL (impl, dst, src, dlen);
122 HP_TIMING_NOW (stop);
123 HP_TIMING_BEST (best_time, start, stop);
126 printf ("\t%zd", (size_t) best_time);
131 do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
137 if (align1 + len >= page_size)
141 if (align2 + len >= page_size)
144 s1 = (char *) buf1 + align1;
145 s2 = (char *) buf2 + align2;
147 for (i = 0; i < len; i++)
148 s1[i] = 32 + 23 * i % (max_char - 32);
151 if (HP_TIMING_AVAIL && dlen > len)
152 printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
154 FOR_EACH_IMPL (impl, 0)
155 do_one_test (impl, s2, s1, len, dlen);
157 if (HP_TIMING_AVAIL && dlen > len)
162 do_random_tests (void)
164 size_t i, j, n, align1, align2, len, dlen;
165 unsigned char *p1 = buf1 + page_size - 512;
166 unsigned char *p2 = buf2 + page_size - 512;
169 for (n = 0; n < ITERATIONS; n++)
171 align1 = random () & 31;
173 align2 = random () & 31;
175 align2 = align1 + (random () & 24);
176 len = random () & 511;
181 len = 510 - j - (random () & 7);
182 j = len + align1 + 64;
185 for (i = 0; i < j; i++)
187 if (i == len + align1)
191 p1[i] = random () & 255;
192 if (i >= align1 && i < len + align1 && !p1[i])
193 p1[i] = (random () & 127) + 3;
197 switch (random () & 7)
200 dlen = len - (random () & 31);
208 dlen = len + 1 + (random () & 65535);
211 dlen = len + 1 + (random () & 255);
214 dlen = len + 1 + (random () & 31);
217 dlen = len + 1 + (random () & 7);
220 dlen = len + 1 + (random () & 3);
227 FOR_EACH_IMPL (impl, 1)
234 if (setjmp (chk_fail_buf) == 0)
236 res = (unsigned char *)
237 CALL (impl, (char *) p2 + align2,
238 (char *) p1 + align1, dlen);
239 printf ("Iteration %zd - did not __chk_fail\n", n);
246 memset (p2 - 64, '\1', 512 + 64);
247 res = (unsigned char *)
248 CALL (impl, (char *) p2 + align2, (char *) p1 + align1, dlen);
249 if (res != STRCPY_RESULT (p2 + align2, len))
252 Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p\n",
253 n, impl->name, align1, align2, len, res,
254 STRCPY_RESULT (p2 + align2, len));
257 for (j = 0; j < align2 + 64; ++j)
259 if (p2[j - 64] != '\1')
262 Iteration %zd - garbage before, %s (%zd, %zd, %zd)\n",
263 n, impl->name, align1, align2, len);
268 for (j = align2 + len + 1; j < 512; ++j)
273 Iteration %zd - garbage after, %s (%zd, %zd, %zd)\n",
274 n, impl->name, align1, align2, len);
279 if (memcmp (p1 + align1, p2 + align2, len + 1))
282 Iteration %zd - different strings, %s (%zd, %zd, %zd)\n",
283 n, impl->name, align1, align2, len);
296 sa.sa_handler = handler;
298 sigemptyset (&sa.sa_mask);
300 sigaction (SIGABRT, &sa, NULL);
302 /* Avoid all the buffer overflow messages on stderr. */
303 int fd = open (_PATH_DEVNULL, O_WRONLY);
305 close (STDERR_FILENO);
308 dup2 (fd, STDERR_FILENO);
311 setenv ("LIBC_FATAL_STDERR_", "1", 1);
316 FOR_EACH_IMPL (impl, 0)
317 printf ("\t%s", impl->name);
320 for (i = 0; i < 16; ++i)
322 do_test (0, 0, i, i + 1, 127);
323 do_test (0, 0, i, i + 1, 255);
324 do_test (0, i, i, i + 1, 127);
325 do_test (i, 0, i, i + 1, 255);
328 for (i = 1; i < 8; ++i)
330 do_test (0, 0, 8 << i, (8 << i) + 1, 127);
331 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
334 for (i = 1; i < 8; ++i)
336 do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
337 do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
338 do_test (i, i, (8 << i), (8 << i) + 1, 127);
339 do_test (i, i, (8 << i), (8 << i) + 1, 255);
342 for (i = 0; i < 16; ++i)
344 do_test (0, 0, i, i + 256, 127);
345 do_test (0, 0, i, i + 256, 255);
346 do_test (0, i, i, i + 256, 127);
347 do_test (i, 0, i, i + 256, 255);
350 for (i = 1; i < 8; ++i)
352 do_test (0, 0, 8 << i, (8 << i) + 256, 127);
353 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
356 for (i = 1; i < 8; ++i)
358 do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
359 do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
360 do_test (i, i, (8 << i), (8 << i) + 256, 127);
361 do_test (i, i, (8 << i), (8 << i) + 256, 255);
364 for (i = 0; i < 16; ++i)
366 do_test (0, 0, i, i, 127);
367 do_test (0, 0, i, i + 2, 255);
368 do_test (0, i, i, i + 3, 127);
369 do_test (i, 0, i, i + 4, 255);
372 for (i = 1; i < 8; ++i)
374 do_test (0, 0, 8 << i, (8 << i) - 15, 127);
375 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
378 for (i = 1; i < 8; ++i)
380 do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
381 do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
382 do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
383 do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
390 #include "../test-skeleton.c"