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Commit | Line | Data |
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000232b9 SP |
1 | /* Verify that ftell returns the correct value at various points before and |
2 | after the handler on which it is called becomes active. | |
2b778ceb | 3 | Copyright (C) 2014-2021 Free Software Foundation, Inc. |
000232b9 SP |
4 | This file is part of the GNU C Library. |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, see | |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
000232b9 SP |
19 | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <errno.h> | |
24 | #include <unistd.h> | |
25 | #include <fcntl.h> | |
26 | #include <locale.h> | |
27 | #include <wchar.h> | |
28 | ||
29 | static int do_test (void); | |
30 | ||
31 | #define TEST_FUNCTION do_test () | |
32 | #include "../test-skeleton.c" | |
33 | ||
34 | #define get_handles_fdopen(filename, fd, fp, fd_mode, mode) \ | |
35 | ({ \ | |
36 | int ret = 0; \ | |
37 | (fd) = open ((filename), (fd_mode), 0); \ | |
38 | if ((fd) == -1) \ | |
39 | { \ | |
40 | printf ("open failed: %m\n"); \ | |
41 | ret = 1; \ | |
42 | } \ | |
43 | else \ | |
44 | { \ | |
45 | (fp) = fdopen ((fd), (mode)); \ | |
46 | if ((fp) == NULL) \ | |
d4b17258 SP |
47 | { \ |
48 | printf ("fdopen failed: %m\n"); \ | |
49 | close (fd); \ | |
50 | ret = 1; \ | |
51 | } \ | |
000232b9 SP |
52 | } \ |
53 | ret; \ | |
54 | }) | |
55 | ||
56 | #define get_handles_fopen(filename, fd, fp, mode) \ | |
57 | ({ \ | |
58 | int ret = 0; \ | |
59 | (fp) = fopen ((filename), (mode)); \ | |
60 | if ((fp) == NULL) \ | |
61 | { \ | |
62 | printf ("fopen failed: %m\n"); \ | |
63 | ret = 1; \ | |
64 | } \ | |
65 | else \ | |
66 | { \ | |
67 | (fd) = fileno (fp); \ | |
68 | if ((fd) == -1) \ | |
d4b17258 | 69 | { \ |
000232b9 SP |
70 | printf ("fileno failed: %m\n"); \ |
71 | ret = 1; \ | |
72 | } \ | |
73 | } \ | |
74 | ret; \ | |
75 | }) | |
76 | ||
77 | /* data points to either char_data or wide_data, depending on whether we're | |
78 | testing regular file mode or wide mode respectively. Similarly, | |
79 | fputs_func points to either fputs or fputws. data_len keeps track of the | |
80 | length of the current data and file_len maintains the current file | |
81 | length. */ | |
82 | static const void *data; | |
83 | static const char *char_data = "abcdef"; | |
84 | static const wchar_t *wide_data = L"abcdef"; | |
85 | static size_t data_len; | |
86 | static size_t file_len; | |
87 | ||
88 | typedef int (*fputs_func_t) (const void *data, FILE *fp); | |
fe8b4d98 | 89 | typedef void *(*fgets_func_t) (void *ws, int n, FILE *fp); |
000232b9 | 90 | fputs_func_t fputs_func; |
fe8b4d98 | 91 | fgets_func_t fgets_func; |
000232b9 | 92 | |
be349d70 SP |
93 | /* This test verifies that the offset reported by ftell is correct after the |
94 | file is truncated using ftruncate. ftruncate does not change the file | |
95 | offset on truncation and hence, SEEK_CUR should continue to point to the | |
96 | old offset and not be changed to the new offset. */ | |
97 | static int | |
98 | do_ftruncate_test (const char *filename) | |
99 | { | |
100 | FILE *fp = NULL; | |
101 | int fd; | |
102 | int ret = 0; | |
103 | struct test | |
104 | { | |
105 | const char *mode; | |
106 | int fd_mode; | |
107 | } test_modes[] = { | |
108 | {"r+", O_RDWR}, | |
61b4f792 SP |
109 | {"w", O_WRONLY | O_TRUNC}, |
110 | {"w+", O_RDWR | O_TRUNC}, | |
be349d70 SP |
111 | {"a", O_WRONLY}, |
112 | {"a+", O_RDWR} | |
113 | }; | |
114 | ||
115 | for (int j = 0; j < 2; j++) | |
116 | { | |
117 | for (int i = 0; i < sizeof (test_modes) / sizeof (struct test); i++) | |
118 | { | |
119 | int fileret; | |
120 | printf ("\tftruncate: %s (file, \"%s\"): ", | |
121 | j == 0 ? "fopen" : "fdopen", | |
122 | test_modes[i].mode); | |
123 | ||
124 | if (j == 0) | |
125 | fileret = get_handles_fopen (filename, fd, fp, test_modes[i].mode); | |
126 | else | |
127 | fileret = get_handles_fdopen (filename, fd, fp, | |
128 | test_modes[i].fd_mode, | |
129 | test_modes[i].mode); | |
130 | ||
131 | if (fileret != 0) | |
132 | return fileret; | |
133 | ||
134 | /* Write some data. */ | |
135 | size_t written = fputs_func (data, fp); | |
136 | ||
137 | if (written == EOF) | |
138 | { | |
139 | printf ("fputs[1] failed to write data\n"); | |
140 | ret |= 1; | |
141 | } | |
142 | ||
143 | /* Record the offset. */ | |
144 | long offset = ftell (fp); | |
145 | ||
146 | /* Flush data to allow switching active handles. */ | |
147 | if (fflush (fp)) | |
148 | { | |
149 | printf ("Flush failed: %m\n"); | |
150 | ret |= 1; | |
151 | } | |
152 | ||
153 | /* Now truncate the file. */ | |
154 | if (ftruncate (fd, 0) != 0) | |
155 | { | |
156 | printf ("Failed to truncate file: %m\n"); | |
157 | ret |= 1; | |
158 | } | |
159 | ||
160 | /* ftruncate does not change the offset, so there is no need to call | |
161 | anything to be able to switch active handles. */ | |
162 | long new_offset = ftell (fp); | |
163 | ||
164 | /* The offset should remain unchanged since ftruncate does not update | |
165 | it. */ | |
166 | if (offset != new_offset) | |
167 | { | |
1b8bf351 | 168 | printf ("Incorrect offset. Expected %ld, but got %ld\n", |
be349d70 SP |
169 | offset, new_offset); |
170 | ||
171 | ret |= 1; | |
172 | } | |
173 | else | |
174 | printf ("offset = %ld\n", offset); | |
175 | ||
176 | fclose (fp); | |
177 | } | |
178 | } | |
179 | ||
180 | return ret; | |
181 | } | |
ea33158c SP |
182 | /* Test that ftell output after a rewind is correct. */ |
183 | static int | |
184 | do_rewind_test (const char *filename) | |
185 | { | |
186 | int ret = 0; | |
187 | struct test | |
188 | { | |
189 | const char *mode; | |
190 | int fd_mode; | |
191 | size_t old_off; | |
192 | size_t new_off; | |
193 | } test_modes[] = { | |
61b4f792 SP |
194 | {"w", O_WRONLY | O_TRUNC, 0, data_len}, |
195 | {"w+", O_RDWR | O_TRUNC, 0, data_len}, | |
ea33158c SP |
196 | {"r+", O_RDWR, 0, data_len}, |
197 | /* The new offsets for 'a' and 'a+' modes have to factor in the | |
198 | previous writes since they always append to the end of the | |
199 | file. */ | |
200 | {"a", O_WRONLY, 0, 3 * data_len}, | |
201 | {"a+", O_RDWR, 0, 4 * data_len}, | |
202 | }; | |
203 | ||
204 | /* Empty the file before the test so that our offsets are simple to | |
205 | calculate. */ | |
206 | FILE *fp = fopen (filename, "w"); | |
207 | if (fp == NULL) | |
208 | { | |
209 | printf ("Failed to open file for emptying\n"); | |
210 | return 1; | |
211 | } | |
212 | fclose (fp); | |
213 | ||
214 | for (int j = 0; j < 2; j++) | |
215 | { | |
216 | for (int i = 0; i < sizeof (test_modes) / sizeof (struct test); i++) | |
217 | { | |
218 | FILE *fp; | |
219 | int fd; | |
220 | int fileret; | |
221 | ||
222 | printf ("\trewind: %s (file, \"%s\"): ", j == 0 ? "fdopen" : "fopen", | |
223 | test_modes[i].mode); | |
224 | ||
225 | if (j == 0) | |
226 | fileret = get_handles_fdopen (filename, fd, fp, | |
227 | test_modes[i].fd_mode, | |
228 | test_modes[i].mode); | |
229 | else | |
230 | fileret = get_handles_fopen (filename, fd, fp, test_modes[i].mode); | |
231 | ||
232 | if (fileret != 0) | |
233 | return fileret; | |
234 | ||
235 | /* Write some content to the file, rewind and ensure that the ftell | |
236 | output after the rewind is 0. POSIX does not specify what the | |
237 | behavior is when a file is rewound in 'a' mode, so we retain | |
238 | current behavior, which is to keep the 0 offset. */ | |
239 | size_t written = fputs_func (data, fp); | |
240 | ||
241 | if (written == EOF) | |
242 | { | |
243 | printf ("fputs[1] failed to write data\n"); | |
244 | ret |= 1; | |
245 | } | |
246 | ||
247 | rewind (fp); | |
248 | long offset = ftell (fp); | |
249 | ||
250 | if (offset != test_modes[i].old_off) | |
251 | { | |
252 | printf ("Incorrect old offset. Expected %zu, but got %ld, ", | |
253 | test_modes[i].old_off, offset); | |
254 | ret |= 1; | |
255 | } | |
256 | else | |
257 | printf ("old offset = %ld, ", offset); | |
258 | ||
259 | written = fputs_func (data, fp); | |
260 | ||
261 | if (written == EOF) | |
262 | { | |
263 | printf ("fputs[1] failed to write data\n"); | |
264 | ret |= 1; | |
265 | } | |
266 | ||
267 | /* After this write, the offset in append modes should factor in the | |
268 | implicit lseek to the end of file. */ | |
269 | offset = ftell (fp); | |
270 | if (offset != test_modes[i].new_off) | |
271 | { | |
272 | printf ("Incorrect new offset. Expected %zu, but got %ld\n", | |
273 | test_modes[i].new_off, offset); | |
274 | ret |= 1; | |
275 | } | |
276 | else | |
277 | printf ("new offset = %ld\n", offset); | |
278 | } | |
279 | } | |
280 | return ret; | |
281 | } | |
282 | ||
000232b9 SP |
283 | /* Test that the value of ftell is not cached when the stream handle is not |
284 | active. */ | |
285 | static int | |
286 | do_ftell_test (const char *filename) | |
287 | { | |
288 | int ret = 0; | |
289 | struct test | |
290 | { | |
291 | const char *mode; | |
292 | int fd_mode; | |
293 | size_t old_off; | |
294 | size_t new_off; | |
fe8b4d98 | 295 | size_t eof_off; |
000232b9 SP |
296 | } test_modes[] = { |
297 | /* In w, w+ and r+ modes, the file position should be at the | |
298 | beginning of the file. After the write, the offset should be | |
fe8b4d98 SP |
299 | updated to data_len. We don't use eof_off in w and a modes since |
300 | they don't allow reading. */ | |
301 | {"w", O_WRONLY | O_TRUNC, 0, data_len, 0}, | |
302 | {"w+", O_RDWR | O_TRUNC, 0, data_len, 2 * data_len}, | |
303 | {"r+", O_RDWR, 0, data_len, 3 * data_len}, | |
ea33158c | 304 | /* For the 'a' mode, the initial file position should be the |
000232b9 | 305 | current end of file. After the write, the offset has data_len |
ea33158c SP |
306 | added to the old value. For a+ mode however, the initial file |
307 | position is the file position of the underlying file descriptor, | |
308 | since it is initially assumed to be in read mode. */ | |
fe8b4d98 SP |
309 | {"a", O_WRONLY, 3 * data_len, 4 * data_len, 5 * data_len}, |
310 | {"a+", O_RDWR, 0, 5 * data_len, 6 * data_len}, | |
000232b9 SP |
311 | }; |
312 | for (int j = 0; j < 2; j++) | |
313 | { | |
314 | for (int i = 0; i < sizeof (test_modes) / sizeof (struct test); i++) | |
315 | { | |
316 | FILE *fp; | |
317 | int fd; | |
b1dbb426 SP |
318 | int fileret; |
319 | ||
000232b9 SP |
320 | printf ("\tftell: %s (file, \"%s\"): ", j == 0 ? "fdopen" : "fopen", |
321 | test_modes[i].mode); | |
322 | ||
323 | if (j == 0) | |
b1dbb426 SP |
324 | fileret = get_handles_fdopen (filename, fd, fp, |
325 | test_modes[i].fd_mode, | |
326 | test_modes[i].mode); | |
000232b9 | 327 | else |
b1dbb426 | 328 | fileret = get_handles_fopen (filename, fd, fp, test_modes[i].mode); |
000232b9 | 329 | |
b1dbb426 SP |
330 | if (fileret != 0) |
331 | return fileret; | |
000232b9 SP |
332 | |
333 | long off = ftell (fp); | |
334 | if (off != test_modes[i].old_off) | |
335 | { | |
336 | printf ("Incorrect old offset. Expected %zu but got %ld, ", | |
337 | test_modes[i].old_off, off); | |
338 | ret |= 1; | |
339 | } | |
340 | else | |
341 | printf ("old offset = %ld, ", off); | |
342 | ||
343 | /* The effect of this write on the offset should be seen in the ftell | |
344 | call that follows it. */ | |
b1dbb426 SP |
345 | int write_ret = write (fd, data, data_len); |
346 | if (write_ret != data_len) | |
347 | { | |
348 | printf ("write failed (%m)\n"); | |
349 | ret |= 1; | |
350 | } | |
000232b9 SP |
351 | off = ftell (fp); |
352 | ||
353 | if (off != test_modes[i].new_off) | |
354 | { | |
fe8b4d98 | 355 | printf ("Incorrect new offset. Expected %zu but got %ld", |
ea33158c | 356 | test_modes[i].new_off, off); |
000232b9 SP |
357 | ret |= 1; |
358 | } | |
359 | else | |
fe8b4d98 SP |
360 | printf ("new offset = %ld", off); |
361 | ||
362 | /* Read to the end, write some data to the fd and check if ftell can | |
363 | see the new ofset. Do this test only for files that allow | |
364 | reading. */ | |
365 | if (test_modes[i].fd_mode != O_WRONLY) | |
366 | { | |
2aa3862e | 367 | wchar_t tmpbuf[data_len]; |
fe8b4d98 SP |
368 | |
369 | rewind (fp); | |
370 | ||
9752c3cd | 371 | while (fgets_func (tmpbuf, data_len, fp) && !feof (fp)); |
fe8b4d98 SP |
372 | |
373 | write_ret = write (fd, data, data_len); | |
374 | if (write_ret != data_len) | |
375 | { | |
376 | printf ("write failed (%m)\n"); | |
377 | ret |= 1; | |
378 | } | |
379 | off = ftell (fp); | |
380 | ||
381 | if (off != test_modes[i].eof_off) | |
382 | { | |
383 | printf (", Incorrect offset after read EOF. " | |
384 | "Expected %zu but got %ld\n", | |
385 | test_modes[i].eof_off, off); | |
386 | ret |= 1; | |
387 | } | |
388 | else | |
389 | printf (", offset after EOF = %ld\n", off); | |
390 | } | |
391 | else | |
392 | putc ('\n', stdout); | |
000232b9 SP |
393 | |
394 | fclose (fp); | |
395 | } | |
396 | } | |
397 | ||
398 | return ret; | |
399 | } | |
400 | ||
401 | /* This test opens the file for writing, moves the file offset of the | |
402 | underlying file, writes out data and then checks if ftell trips on it. */ | |
403 | static int | |
404 | do_write_test (const char *filename) | |
405 | { | |
406 | FILE *fp = NULL; | |
407 | int fd; | |
408 | int ret = 0; | |
409 | struct test | |
410 | { | |
411 | const char *mode; | |
412 | int fd_mode; | |
413 | } test_modes[] = { | |
61b4f792 SP |
414 | {"w", O_WRONLY | O_TRUNC}, |
415 | {"w+", O_RDWR | O_TRUNC}, | |
000232b9 SP |
416 | {"r+", O_RDWR} |
417 | }; | |
418 | ||
419 | for (int j = 0; j < 2; j++) | |
420 | { | |
421 | for (int i = 0; i < sizeof (test_modes) / sizeof (struct test); i++) | |
422 | { | |
b1dbb426 | 423 | int fileret; |
000232b9 SP |
424 | printf ("\twrite: %s (file, \"%s\"): ", j == 0 ? "fopen" : "fdopen", |
425 | test_modes[i].mode); | |
426 | ||
427 | if (j == 0) | |
b1dbb426 | 428 | fileret = get_handles_fopen (filename, fd, fp, test_modes[i].mode); |
000232b9 | 429 | else |
b1dbb426 SP |
430 | fileret = get_handles_fdopen (filename, fd, fp, |
431 | test_modes[i].fd_mode, | |
432 | test_modes[i].mode); | |
000232b9 | 433 | |
b1dbb426 SP |
434 | if (fileret != 0) |
435 | return fileret; | |
000232b9 SP |
436 | |
437 | /* Move offset to just before the end of the file. */ | |
b1dbb426 SP |
438 | off_t seek_ret = lseek (fd, file_len - 1, SEEK_SET); |
439 | if (seek_ret == -1) | |
000232b9 SP |
440 | { |
441 | printf ("lseek failed: %m\n"); | |
442 | ret |= 1; | |
443 | } | |
444 | ||
445 | /* Write some data. */ | |
446 | size_t written = fputs_func (data, fp); | |
447 | ||
448 | if (written == EOF) | |
449 | { | |
450 | printf ("fputs[1] failed to write data\n"); | |
451 | ret |= 1; | |
452 | } | |
453 | ||
454 | /* Verify that the offset points to the end of the file. The length | |
455 | of the file would be the original length + the length of data | |
456 | written to it - the amount by which we moved the offset using | |
457 | lseek. */ | |
458 | long offset = ftell (fp); | |
459 | file_len = file_len - 1 + data_len; | |
460 | ||
461 | if (offset != file_len) | |
462 | { | |
463 | printf ("Incorrect offset. Expected %zu, but got %ld\n", | |
464 | file_len, offset); | |
465 | ||
466 | ret |= 1; | |
467 | } | |
468 | ||
469 | printf ("offset = %ld\n", offset); | |
470 | fclose (fp); | |
d4b17258 | 471 | } |
000232b9 SP |
472 | } |
473 | ||
474 | return ret; | |
475 | } | |
476 | ||
477 | /* This test opens a file in append mode, writes some data, and then verifies | |
478 | that ftell does not trip over it. */ | |
479 | static int | |
480 | do_append_test (const char *filename) | |
481 | { | |
482 | FILE *fp = NULL; | |
483 | int ret = 0; | |
484 | int fd; | |
485 | ||
486 | struct test | |
487 | { | |
488 | const char *mode; | |
489 | int fd_mode; | |
490 | } test_modes[] = { | |
491 | {"a", O_WRONLY}, | |
492 | {"a+", O_RDWR} | |
493 | }; | |
494 | ||
495 | for (int j = 0; j < 2; j++) | |
496 | { | |
497 | for (int i = 0; i < sizeof (test_modes) / sizeof (struct test); i++) | |
498 | { | |
b1dbb426 SP |
499 | int fileret; |
500 | ||
000232b9 SP |
501 | printf ("\tappend: %s (file, \"%s\"): ", j == 0 ? "fopen" : "fdopen", |
502 | test_modes[i].mode); | |
503 | ||
504 | if (j == 0) | |
b1dbb426 | 505 | fileret = get_handles_fopen (filename, fd, fp, test_modes[i].mode); |
000232b9 | 506 | else |
b1dbb426 SP |
507 | fileret = get_handles_fdopen (filename, fd, fp, |
508 | test_modes[i].fd_mode, | |
509 | test_modes[i].mode); | |
000232b9 | 510 | |
b1dbb426 SP |
511 | if (fileret != 0) |
512 | return fileret; | |
000232b9 SP |
513 | |
514 | /* Write some data. */ | |
515 | size_t written = fputs_func (data, fp); | |
516 | ||
517 | if (written == EOF) | |
518 | { | |
519 | printf ("fputs[1] failed to write all data\n"); | |
520 | ret |= 1; | |
521 | } | |
522 | ||
523 | /* Verify that the offset points to the end of the file. The file | |
524 | len is maintained by adding data_len each time to reflect the data | |
525 | written to it. */ | |
526 | long offset = ftell (fp); | |
527 | file_len += data_len; | |
528 | ||
529 | if (offset != file_len) | |
530 | { | |
531 | printf ("Incorrect offset. Expected %zu, but got %ld\n", | |
532 | file_len, offset); | |
533 | ||
534 | ret |= 1; | |
535 | } | |
536 | ||
537 | printf ("offset = %ld\n", offset); | |
538 | fclose (fp); | |
539 | } | |
540 | } | |
541 | ||
ae42bbc5 SP |
542 | /* For fdopen in 'a' mode, the file descriptor should not change if the file |
543 | is already open with the O_APPEND flag set. */ | |
544 | fd = open (filename, O_WRONLY | O_APPEND, 0); | |
545 | if (fd == -1) | |
546 | { | |
547 | printf ("open(O_APPEND) failed: %m\n"); | |
548 | return 1; | |
549 | } | |
550 | ||
551 | off_t seek_ret = lseek (fd, file_len - 1, SEEK_SET); | |
552 | if (seek_ret == -1) | |
553 | { | |
554 | printf ("lseek[O_APPEND][0] failed: %m\n"); | |
555 | ret |= 1; | |
556 | } | |
557 | ||
558 | fp = fdopen (fd, "a"); | |
559 | if (fp == NULL) | |
560 | { | |
561 | printf ("fdopen(O_APPEND) failed: %m\n"); | |
562 | close (fd); | |
563 | return 1; | |
564 | } | |
565 | ||
566 | off_t new_seek_ret = lseek (fd, 0, SEEK_CUR); | |
567 | if (seek_ret == -1) | |
568 | { | |
569 | printf ("lseek[O_APPEND][1] failed: %m\n"); | |
570 | ret |= 1; | |
571 | } | |
572 | ||
573 | printf ("\tappend: fdopen (file, \"a\"): O_APPEND: "); | |
574 | ||
575 | if (seek_ret != new_seek_ret) | |
576 | { | |
41fad830 L |
577 | printf ("incorrectly modified file offset to %jd, should be %jd", |
578 | (intmax_t) new_seek_ret, (intmax_t) seek_ret); | |
ae42bbc5 SP |
579 | ret |= 1; |
580 | } | |
581 | else | |
41fad830 | 582 | printf ("retained current file offset %jd", (intmax_t) seek_ret); |
ae42bbc5 SP |
583 | |
584 | new_seek_ret = ftello (fp); | |
585 | ||
586 | if (seek_ret != new_seek_ret) | |
587 | { | |
41fad830 L |
588 | printf (", ftello reported incorrect offset %jd, should be %jd\n", |
589 | (intmax_t) new_seek_ret, (intmax_t) seek_ret); | |
ae42bbc5 SP |
590 | ret |= 1; |
591 | } | |
592 | else | |
41fad830 | 593 | printf (", ftello reported correct offset %jd\n", (intmax_t) seek_ret); |
ae42bbc5 SP |
594 | |
595 | fclose (fp); | |
596 | ||
000232b9 SP |
597 | return ret; |
598 | } | |
599 | ||
600 | static int | |
601 | do_one_test (const char *filename) | |
602 | { | |
603 | int ret = 0; | |
604 | ||
605 | ret |= do_ftell_test (filename); | |
606 | ret |= do_write_test (filename); | |
607 | ret |= do_append_test (filename); | |
ea33158c | 608 | ret |= do_rewind_test (filename); |
be349d70 | 609 | ret |= do_ftruncate_test (filename); |
000232b9 SP |
610 | |
611 | return ret; | |
612 | } | |
613 | ||
614 | /* Run a set of tests for ftell for regular files and wide mode files. */ | |
615 | static int | |
616 | do_test (void) | |
617 | { | |
618 | int ret = 0; | |
619 | FILE *fp = NULL; | |
620 | char *filename; | |
621 | size_t written; | |
622 | int fd = create_temp_file ("tst-active-handler-tmp.", &filename); | |
623 | ||
624 | if (fd == -1) | |
625 | { | |
626 | printf ("create_temp_file: %m\n"); | |
627 | return 1; | |
628 | } | |
629 | ||
630 | fp = fdopen (fd, "w"); | |
631 | if (fp == NULL) | |
632 | { | |
633 | printf ("fdopen[0]: %m\n"); | |
634 | close (fd); | |
635 | return 1; | |
636 | } | |
637 | ||
638 | data = char_data; | |
639 | data_len = strlen (char_data); | |
640 | file_len = strlen (char_data); | |
641 | written = fputs (data, fp); | |
642 | ||
643 | if (written == EOF) | |
644 | { | |
645 | printf ("fputs[1] failed to write data\n"); | |
646 | ret = 1; | |
647 | } | |
648 | ||
649 | fclose (fp); | |
650 | if (ret) | |
651 | return ret; | |
652 | ||
653 | /* Tests for regular files. */ | |
654 | puts ("Regular mode:"); | |
655 | fputs_func = (fputs_func_t) fputs; | |
fe8b4d98 | 656 | fgets_func = (fgets_func_t) fgets; |
000232b9 SP |
657 | data = char_data; |
658 | data_len = strlen (char_data); | |
659 | ret |= do_one_test (filename); | |
660 | ||
661 | /* Truncate the file before repeating the tests in wide mode. */ | |
662 | fp = fopen (filename, "w"); | |
663 | if (fp == NULL) | |
664 | { | |
665 | printf ("fopen failed %m\n"); | |
666 | return 1; | |
667 | } | |
668 | fclose (fp); | |
669 | ||
670 | /* Tests for wide files. */ | |
671 | puts ("Wide mode:"); | |
672 | if (setlocale (LC_ALL, "en_US.UTF-8") == NULL) | |
673 | { | |
674 | printf ("Cannot set en_US.UTF-8 locale.\n"); | |
675 | return 1; | |
676 | } | |
677 | fputs_func = (fputs_func_t) fputws; | |
fe8b4d98 | 678 | fgets_func = (fgets_func_t) fgetws; |
000232b9 SP |
679 | data = wide_data; |
680 | data_len = wcslen (wide_data); | |
681 | ret |= do_one_test (filename); | |
682 | ||
683 | return ret; | |
684 | } |