1 | /* Test for string function add boundaries of usable memory. |
2 | Copyright (C) 1996-2022 Free Software Foundation, Inc. |
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 | #define _GNU_SOURCE 1 |
20 | |
21 | /* Make sure we don't test the optimized inline functions if we want to |
22 | test the real implementation. */ |
23 | #undef __USE_STRING_INLINES |
24 | |
25 | #include <errno.h> |
26 | #include <stdio.h> |
27 | #include <string.h> |
28 | #include <unistd.h> |
29 | #include <sys/mman.h> |
30 | #include <sys/param.h> |
31 | |
32 | #ifndef CHAR |
33 | # define L(c) c |
34 | # define CHAR char |
35 | # define MEMSET memset |
36 | # define STRLEN strlen |
37 | # define STRNLEN strnlen |
38 | # define STRCHR strchr |
39 | # define STRRCHR strrchr |
40 | # define STRCPY strcpy |
41 | # define STRNCPY strncpy |
42 | # define MEMCMP memcmp |
43 | # define STPCPY stpcpy |
44 | # define STPNCPY stpncpy |
45 | # define MEMCPY memcpy |
46 | # define MEMPCPY mempcpy |
47 | # define MEMCHR memchr |
48 | # define STRCMP strcmp |
49 | # define STRNCMP strncmp |
50 | #endif |
51 | |
52 | |
53 | #define STRINGIFY(s) STRINGIFY2 (s) |
54 | #define STRINGIFY2(s) #s |
55 | |
56 | |
57 | int |
58 | do_test (void) |
59 | { |
60 | size_t size = sysconf (_SC_PAGESIZE); |
61 | size_t nchars = size / sizeof (CHAR); |
62 | CHAR *adr; |
63 | CHAR *dest; |
64 | int result = 0; |
65 | |
66 | adr = (CHAR *) mmap (NULL, len: 3 * size, PROT_READ | PROT_WRITE, |
67 | MAP_PRIVATE | MAP_ANON, fd: -1, offset: 0); |
68 | dest = (CHAR *) mmap (NULL, len: 3 * size, PROT_READ | PROT_WRITE, |
69 | MAP_PRIVATE | MAP_ANON, fd: -1, offset: 0); |
70 | if (adr == MAP_FAILED || dest == MAP_FAILED) |
71 | { |
72 | if (errno == ENOSYS) |
73 | puts (s: "No test, mmap not available." ); |
74 | else |
75 | { |
76 | printf (format: "mmap failed: %m" ); |
77 | result = 1; |
78 | } |
79 | } |
80 | else |
81 | { |
82 | size_t inner, middle, outer, nchars64, max128; |
83 | |
84 | if (nchars > 64) |
85 | nchars64 = nchars - 64; |
86 | else |
87 | nchars64 = 0; |
88 | |
89 | if (nchars > 128) |
90 | max128 = nchars - 128; |
91 | else |
92 | max128 = 0; |
93 | |
94 | mprotect (addr: adr, len: size, PROT_NONE); |
95 | mprotect (addr: adr + 2 * nchars, len: size, PROT_NONE); |
96 | adr += nchars; |
97 | |
98 | mprotect (addr: dest, len: size, PROT_NONE); |
99 | mprotect (addr: dest + 2 * nchars, len: size, PROT_NONE); |
100 | dest += nchars; |
101 | |
102 | MEMSET (adr, L('T'), nchars); |
103 | |
104 | /* strlen/wcslen test */ |
105 | for (outer = nchars - 1; outer >= max128; --outer) |
106 | { |
107 | for (inner = MAX (outer, nchars64); inner < nchars; ++inner) |
108 | { |
109 | adr[inner] = L('\0'); |
110 | |
111 | if (STRLEN (&adr[outer]) != (size_t) (inner - outer)) |
112 | { |
113 | printf (format: "%s flunked for outer = %zu, inner = %zu\n" , |
114 | STRINGIFY (STRLEN), outer, inner); |
115 | result = 1; |
116 | } |
117 | |
118 | adr[inner] = L('T'); |
119 | } |
120 | if (outer == 0) |
121 | break; |
122 | } |
123 | |
124 | /* strnlen/wcsnlen test */ |
125 | for (outer = nchars; outer >= max128; --outer) |
126 | { |
127 | for (inner = MAX (outer, nchars64); inner < nchars; ++inner) |
128 | { |
129 | adr[inner] = L('\0'); |
130 | |
131 | if (STRNLEN (&adr[outer], inner - outer + 1) |
132 | != (size_t) (inner - outer)) |
133 | { |
134 | printf (format: "%s flunked for outer = %zu, inner = %zu\n" , |
135 | STRINGIFY (STRNLEN), outer, inner); |
136 | result = 1; |
137 | } |
138 | |
139 | adr[inner] = L('T'); |
140 | } |
141 | if (outer == 0) |
142 | break; |
143 | } |
144 | for (outer = nchars; outer >= max128; --outer) |
145 | { |
146 | for (inner = MAX (outer, nchars64); inner <= nchars; ++inner) |
147 | { |
148 | if (STRNLEN (&adr[outer], inner - outer) |
149 | != (size_t) (inner - outer)) |
150 | { |
151 | printf (format: "%s flunked bounded for outer = %zu, inner = %zu\n" , |
152 | STRINGIFY (STRNLEN), outer, inner); |
153 | result = 1; |
154 | } |
155 | } |
156 | if (outer == 0) |
157 | break; |
158 | } |
159 | |
160 | /* strchr/wcschr test */ |
161 | for (outer = nchars - 1; outer >= max128; --outer) |
162 | { |
163 | for (middle = MAX (outer, nchars64); middle < nchars; ++middle) |
164 | { |
165 | for (inner = middle; inner < nchars; ++inner) |
166 | { |
167 | adr[middle] = L('V'); |
168 | adr[inner] = L('\0'); |
169 | |
170 | CHAR *cp = STRCHR (&adr[outer], L('V')); |
171 | |
172 | if ((inner == middle && cp != NULL) |
173 | || (inner != middle |
174 | && (cp - &adr[outer]) != middle - outer)) |
175 | { |
176 | printf (format: "%s flunked for outer = %zu, middle = %zu, " |
177 | "inner = %zu\n" , |
178 | STRINGIFY (STRCHR), outer, middle, inner); |
179 | result = 1; |
180 | } |
181 | |
182 | adr[inner] = L('T'); |
183 | adr[middle] = L('T'); |
184 | } |
185 | } |
186 | if (outer == 0) |
187 | break; |
188 | } |
189 | |
190 | /* Special test. */ |
191 | adr[nchars - 1] = L('\0'); |
192 | if (STRCHR (&adr[nchars - 1], L('\n')) != NULL) |
193 | { |
194 | printf (format: "%s flunked test of empty string at end of page\n" , |
195 | STRINGIFY (STRCHR)); |
196 | result = 1; |
197 | } |
198 | |
199 | /* strrchr/wcsrchr test */ |
200 | for (outer = nchars - 1; outer >= max128; --outer) |
201 | { |
202 | for (middle = MAX (outer, nchars64); middle < nchars; ++middle) |
203 | { |
204 | for (inner = middle; inner < nchars; ++inner) |
205 | { |
206 | adr[middle] = L('V'); |
207 | adr[inner] = L('\0'); |
208 | |
209 | CHAR *cp = STRRCHR (&adr[outer], L('V')); |
210 | |
211 | if ((inner == middle && cp != NULL) |
212 | || (inner != middle |
213 | && (cp - &adr[outer]) != middle - outer)) |
214 | { |
215 | printf (format: "%s flunked for outer = %zu, middle = %zu, " |
216 | "inner = %zu\n" , |
217 | STRINGIFY (STRRCHR), outer, middle, inner); |
218 | result = 1; |
219 | } |
220 | |
221 | adr[inner] = L('T'); |
222 | adr[middle] = L('T'); |
223 | } |
224 | } |
225 | if (outer == 0) |
226 | break; |
227 | } |
228 | |
229 | /* memchr test */ |
230 | for (outer = nchars - 1; outer >= max128; --outer) |
231 | { |
232 | for (middle = MAX (outer, nchars64); middle < nchars; ++middle) |
233 | { |
234 | adr[middle] = L('V'); |
235 | |
236 | CHAR *cp = MEMCHR (&adr[outer], L('V'), 3 * size); |
237 | |
238 | if (cp - &adr[outer] != middle - outer) |
239 | { |
240 | printf (format: "%s flunked for outer = %zu, middle = %zu\n" , |
241 | STRINGIFY (MEMCHR), outer, middle); |
242 | result = 1; |
243 | } |
244 | |
245 | adr[middle] = L('T'); |
246 | } |
247 | if (outer == 0) |
248 | break; |
249 | } |
250 | for (outer = nchars; outer >= max128; --outer) |
251 | { |
252 | CHAR *cp = MEMCHR (&adr[outer], L('V'), nchars - outer); |
253 | |
254 | if (cp != NULL) |
255 | { |
256 | printf (format: "%s flunked for outer = %zu\n" , |
257 | STRINGIFY (MEMCHR), outer); |
258 | result = 1; |
259 | } |
260 | if (outer == 0) |
261 | break; |
262 | } |
263 | |
264 | /* These functions only exist for single-byte characters. */ |
265 | #ifndef WCSTEST |
266 | /* rawmemchr test */ |
267 | for (outer = nchars - 1; outer >= max128; --outer) |
268 | { |
269 | for (middle = MAX (outer, nchars64); middle < nchars; ++middle) |
270 | { |
271 | adr[middle] = L('V'); |
272 | |
273 | CHAR *cp = rawmemchr (s: &adr[outer], L('V')); |
274 | |
275 | if (cp - &adr[outer] != middle - outer) |
276 | { |
277 | printf (format: "%s flunked for outer = %zu, middle = %zu\n" , |
278 | STRINGIFY (rawmemchr), outer, middle); |
279 | result = 1; |
280 | } |
281 | |
282 | adr[middle] = L('T'); |
283 | } |
284 | if (outer == 0) |
285 | break; |
286 | } |
287 | |
288 | /* memrchr test */ |
289 | for (outer = nchars - 1; outer >= max128; --outer) |
290 | { |
291 | for (middle = MAX (outer, nchars64); middle < nchars; ++middle) |
292 | { |
293 | adr[middle] = L('V'); |
294 | |
295 | CHAR *cp = memrchr (s: &adr[outer], L('V'), n: nchars - outer); |
296 | |
297 | if (cp - &adr[outer] != middle - outer) |
298 | { |
299 | printf (format: "%s flunked for outer = %zu, middle = %zu\n" , |
300 | STRINGIFY (memrchr), outer, middle); |
301 | result = 1; |
302 | } |
303 | |
304 | adr[middle] = L('T'); |
305 | } |
306 | if (outer == 0) |
307 | break; |
308 | } |
309 | for (outer = nchars; outer >= max128; --outer) |
310 | { |
311 | CHAR *cp = memrchr (s: &adr[outer], L('V'), n: nchars - outer); |
312 | |
313 | if (cp != NULL) |
314 | { |
315 | printf (format: "%s flunked for outer = %zu\n" , |
316 | STRINGIFY (memrchr), outer); |
317 | result = 1; |
318 | } |
319 | if (outer == 0) |
320 | break; |
321 | } |
322 | #endif |
323 | |
324 | /* strcpy/wcscpy test */ |
325 | for (outer = nchars - 1; outer >= max128; --outer) |
326 | { |
327 | for (inner = MAX (outer, nchars64); inner < nchars; ++inner) |
328 | { |
329 | adr[inner] = L('\0'); |
330 | |
331 | if (STRCPY (dest, &adr[outer]) != dest |
332 | || STRLEN (dest) != (size_t) (inner - outer)) |
333 | { |
334 | printf (format: "%s flunked for outer = %zu, inner = %zu\n" , |
335 | STRINGIFY (STRCPY), outer, inner); |
336 | result = 1; |
337 | } |
338 | |
339 | adr[inner] = L('T'); |
340 | } |
341 | if (outer == 0) |
342 | break; |
343 | } |
344 | |
345 | /* strcmp/wcscmp tests */ |
346 | for (outer = 1; outer < 32; ++outer) |
347 | for (middle = 0; middle < 16; ++middle) |
348 | { |
349 | MEMSET (adr + middle, L('T'), 256); |
350 | adr[256] = L('\0'); |
351 | MEMSET (dest + nchars - outer, L('T'), outer - 1); |
352 | dest[nchars - 1] = L('\0'); |
353 | |
354 | if (STRCMP (adr + middle, dest + nchars - outer) <= 0) |
355 | { |
356 | printf (format: "%s 1 flunked for outer = %zu, middle = %zu\n" , |
357 | STRINGIFY (STRCMP), outer, middle); |
358 | result = 1; |
359 | } |
360 | |
361 | if (STRCMP (dest + nchars - outer, adr + middle) >= 0) |
362 | { |
363 | printf (format: "%s 2 flunked for outer = %zu, middle = %zu\n" , |
364 | STRINGIFY (STRCMP), outer, middle); |
365 | result = 1; |
366 | } |
367 | } |
368 | |
369 | /* strncmp/wcsncmp tests */ |
370 | for (outer = 1; outer < 32; ++outer) |
371 | for (middle = 0; middle < 16; ++middle) |
372 | { |
373 | MEMSET (adr + middle, L('T'), 256); |
374 | adr[256] = L('\0'); |
375 | MEMSET (dest + nchars - outer, L('T'), outer - 1); |
376 | dest[nchars - 1] = L('U'); |
377 | |
378 | for (inner = 0; inner < outer; ++inner) |
379 | { |
380 | if (STRNCMP (adr + middle, dest + nchars - outer, inner) != 0) |
381 | { |
382 | printf (format: "%s 1 flunked for outer = %zu, middle = %zu, " |
383 | "inner = %zu\n" , |
384 | STRINGIFY (STRNCMP), outer, middle, inner); |
385 | result = 1; |
386 | } |
387 | |
388 | if (STRNCMP (dest + nchars - outer, adr + middle, inner) != 0) |
389 | { |
390 | printf (format: "%s 2 flunked for outer = %zu, middle = %zu, " |
391 | "inner = %zu\n" , |
392 | STRINGIFY (STRNCMP), outer, middle, inner); |
393 | result = 1; |
394 | } |
395 | } |
396 | |
397 | if (STRNCMP (adr + middle, dest + nchars - outer, outer) >= 0) |
398 | { |
399 | printf (format: "%s 1 flunked for outer = %zu, middle = %zu, full\n" , |
400 | STRINGIFY (STRNCMP), outer, middle); |
401 | result = 1; |
402 | } |
403 | |
404 | if (STRNCMP (dest + nchars - outer, adr + middle, outer) <= 0) |
405 | { |
406 | printf (format: "%s 2 flunked for outer = %zu, middle = %zu, full\n" , |
407 | STRINGIFY (STRNCMP), outer, middle); |
408 | result = 1; |
409 | } |
410 | } |
411 | |
412 | /* strncpy/wcsncpy tests */ |
413 | adr[nchars - 1] = L('T'); |
414 | for (outer = nchars; outer >= max128; --outer) |
415 | { |
416 | size_t len; |
417 | |
418 | for (len = 0; len < nchars - outer; ++len) |
419 | { |
420 | if (STRNCPY (dest, &adr[outer], len) != dest |
421 | || MEMCMP (dest, &adr[outer], len) != 0) |
422 | { |
423 | printf (format: "outer %s flunked for outer = %zu, len = %zu\n" , |
424 | STRINGIFY (STRNCPY), outer, len); |
425 | result = 1; |
426 | } |
427 | } |
428 | if (outer == 0) |
429 | break; |
430 | } |
431 | adr[nchars - 1] = L('\0'); |
432 | |
433 | for (outer = nchars - 1; outer >= max128; --outer) |
434 | { |
435 | for (inner = MAX (outer, nchars64); inner < nchars; ++inner) |
436 | { |
437 | size_t len; |
438 | |
439 | adr[inner] = L('\0'); |
440 | |
441 | for (len = 0; len < nchars - outer + 64; ++len) |
442 | { |
443 | if (STRNCPY (dest, &adr[outer], len) != dest |
444 | || MEMCMP (dest, &adr[outer], |
445 | MIN (inner - outer, len)) != 0 |
446 | || (inner - outer < len |
447 | && STRLEN (dest) != (inner - outer))) |
448 | { |
449 | printf (format: "%s flunked for outer = %zu, inner = %zu, " |
450 | "len = %zu\n" , |
451 | STRINGIFY (STRNCPY), outer, inner, len); |
452 | result = 1; |
453 | } |
454 | if (STRNCPY (dest + 1, &adr[outer], len) != dest + 1 |
455 | || MEMCMP (dest + 1, &adr[outer], |
456 | MIN (inner - outer, len)) != 0 |
457 | || (inner - outer < len |
458 | && STRLEN (dest + 1) != (inner - outer))) |
459 | { |
460 | printf (format: "%s+1 flunked for outer = %zu, inner = %zu, " |
461 | "len = %zu\n" , |
462 | STRINGIFY (STRNCPY), outer, inner, len); |
463 | result = 1; |
464 | } |
465 | } |
466 | |
467 | adr[inner] = L('T'); |
468 | } |
469 | if (outer == 0) |
470 | break; |
471 | } |
472 | |
473 | /* stpcpy/wcpcpy test */ |
474 | for (outer = nchars - 1; outer >= max128; --outer) |
475 | { |
476 | for (inner = MAX (outer, nchars64); inner < nchars; ++inner) |
477 | { |
478 | adr[inner] = L('\0'); |
479 | |
480 | if ((STPCPY (dest, &adr[outer]) - dest) != inner - outer) |
481 | { |
482 | printf (format: "%s flunked for outer = %zu, inner = %zu\n" , |
483 | STRINGIFY (STPCPY), outer, inner); |
484 | result = 1; |
485 | } |
486 | |
487 | adr[inner] = L('T'); |
488 | } |
489 | if (outer == 0) |
490 | break; |
491 | } |
492 | |
493 | /* stpncpy/wcpncpy test */ |
494 | adr[nchars - 1] = L('T'); |
495 | for (outer = nchars; outer >= max128; --outer) |
496 | { |
497 | size_t len; |
498 | |
499 | for (len = 0; len < nchars - outer; ++len) |
500 | { |
501 | if (STPNCPY (dest: dest, src: &adr[outer], n: len) != dest + len |
502 | || MEMCMP (dest, &adr[outer], len) != 0) |
503 | { |
504 | printf (format: "outer %s flunked for outer = %zu, len = %zu\n" , |
505 | STRINGIFY (STPNCPY), outer, len); |
506 | result = 1; |
507 | } |
508 | } |
509 | if (outer == 0) |
510 | break; |
511 | } |
512 | adr[nchars - 1] = L('\0'); |
513 | |
514 | for (outer = nchars - 1; outer >= max128; --outer) |
515 | { |
516 | for (middle = MAX (outer, nchars64); middle < nchars; ++middle) |
517 | { |
518 | adr[middle] = L('\0'); |
519 | |
520 | for (inner = 0; inner < nchars - outer; ++ inner) |
521 | { |
522 | if ((STPNCPY (dest: dest, src: &adr[outer], n: inner) - dest) |
523 | != MIN (inner, middle - outer)) |
524 | { |
525 | printf (format: "%s flunked for outer = %zu, middle = %zu, " |
526 | "inner = %zu\n" , |
527 | STRINGIFY (STPNCPY), outer, middle, inner); |
528 | result = 1; |
529 | } |
530 | } |
531 | |
532 | adr[middle] = L('T'); |
533 | } |
534 | if (outer == 0) |
535 | break; |
536 | } |
537 | |
538 | /* memcpy/wmemcpy test */ |
539 | for (outer = nchars; outer >= max128; --outer) |
540 | { |
541 | for (inner = 0; inner < nchars - outer; ++inner) |
542 | if (MEMCPY (dest, &adr[outer], inner) != dest) |
543 | { |
544 | printf (format: "%s flunked for outer = %zu, inner = %zu\n" , |
545 | STRINGIFY (MEMCPY), outer, inner); |
546 | result = 1; |
547 | } |
548 | if (outer == 0) |
549 | break; |
550 | } |
551 | |
552 | /* mempcpy/wmempcpy test */ |
553 | for (outer = nchars; outer >= max128; --outer) |
554 | { |
555 | for (inner = 0; inner < nchars - outer; ++inner) |
556 | if (MEMPCPY (dest, &adr[outer], inner) != dest + inner) |
557 | { |
558 | printf (format: "%s flunked for outer = %zu, inner = %zu\n" , |
559 | STRINGIFY (MEMPCPY), outer, inner); |
560 | result = 1; |
561 | } |
562 | if (outer == 0) |
563 | break; |
564 | } |
565 | |
566 | /* This function only exists for single-byte characters. */ |
567 | #ifndef WCSTEST |
568 | /* memccpy test */ |
569 | memset (adr, '\0', nchars); |
570 | for (outer = nchars; outer >= max128; --outer) |
571 | { |
572 | for (inner = 0; inner < nchars - outer; ++inner) |
573 | if (memccpy (dest: dest, src: &adr[outer], L('\1'), n: inner) != NULL) |
574 | { |
575 | printf (format: "memccpy flunked full copy for outer = %zu, inner = %zu\n" , |
576 | outer, inner); |
577 | result = 1; |
578 | } |
579 | if (outer == 0) |
580 | break; |
581 | } |
582 | for (outer = nchars - 1; outer >= max128; --outer) |
583 | { |
584 | for (middle = 0; middle < nchars - outer; ++middle) |
585 | { |
586 | memset (dest, L('\2'), middle + 1); |
587 | for (inner = 0; inner < middle; ++inner) |
588 | { |
589 | adr[outer + inner] = L('\1'); |
590 | |
591 | if (memccpy (dest: dest, src: &adr[outer], c: '\1', n: middle + 128) |
592 | != dest + inner + 1) |
593 | { |
594 | printf (format: "\ |
595 | memccpy flunked partial copy for outer = %zu, middle = %zu, inner = %zu\n" , |
596 | outer, middle, inner); |
597 | result = 1; |
598 | } |
599 | else if (dest[inner + 1] != L('\2')) |
600 | { |
601 | printf (format: "\ |
602 | memccpy copied too much for outer = %zu, middle = %zu, inner = %zu\n" , |
603 | outer, middle, inner); |
604 | result = 1; |
605 | } |
606 | adr[outer + inner] = L('\0'); |
607 | } |
608 | } |
609 | if (outer == 0) |
610 | break; |
611 | } |
612 | #endif |
613 | } |
614 | |
615 | return result; |
616 | } |
617 | |
618 | #include <support/test-driver.c> |
619 | |