1 | /* Copyright (C) 1993-2018 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | Written by Ulrich Drepper <drepper@cygnus.com>. |
4 | Based on the single byte version by Per Bothner <bothner@cygnus.com>. |
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 |
18 | <http://www.gnu.org/licenses/>. |
19 | |
20 | As a special exception, if you link the code in this file with |
21 | files compiled with a GNU compiler to produce an executable, |
22 | that does not cause the resulting executable to be covered by |
23 | the GNU Lesser General Public License. This exception does not |
24 | however invalidate any other reasons why the executable file |
25 | might be covered by the GNU Lesser General Public License. |
26 | This exception applies to code released by its copyright holders |
27 | in files containing the exception. */ |
28 | |
29 | #include <assert.h> |
30 | #include <libioP.h> |
31 | #include <wchar.h> |
32 | #include <gconv.h> |
33 | #include <stdlib.h> |
34 | #include <string.h> |
35 | |
36 | /* Convert TO_DO wide character from DATA to FP. |
37 | Then mark FP as having empty buffers. */ |
38 | int |
39 | _IO_wdo_write (_IO_FILE *fp, const wchar_t *data, _IO_size_t to_do) |
40 | { |
41 | struct _IO_codecvt *cc = fp->_codecvt; |
42 | |
43 | if (to_do > 0) |
44 | { |
45 | if (fp->_IO_write_end == fp->_IO_write_ptr |
46 | && fp->_IO_write_end != fp->_IO_write_base) |
47 | { |
48 | if (_IO_new_do_write (fp, fp->_IO_write_base, |
49 | fp->_IO_write_ptr - fp->_IO_write_base) == EOF) |
50 | return WEOF; |
51 | } |
52 | |
53 | do |
54 | { |
55 | enum __codecvt_result result; |
56 | const wchar_t *new_data; |
57 | char mb_buf[MB_LEN_MAX]; |
58 | char *write_base, *write_ptr, *buf_end; |
59 | |
60 | if (fp->_IO_write_ptr - fp->_IO_write_base < sizeof (mb_buf)) |
61 | { |
62 | /* Make sure we have room for at least one multibyte |
63 | character. */ |
64 | write_ptr = write_base = mb_buf; |
65 | buf_end = mb_buf + sizeof (mb_buf); |
66 | } |
67 | else |
68 | { |
69 | write_ptr = fp->_IO_write_ptr; |
70 | write_base = fp->_IO_write_base; |
71 | buf_end = fp->_IO_buf_end; |
72 | } |
73 | |
74 | /* Now convert from the internal format into the external buffer. */ |
75 | result = (*cc->__codecvt_do_out) (cc, &fp->_wide_data->_IO_state, |
76 | data, data + to_do, &new_data, |
77 | write_ptr, |
78 | buf_end, |
79 | &write_ptr); |
80 | |
81 | /* Write out what we produced so far. */ |
82 | if (_IO_new_do_write (fp, write_base, write_ptr - write_base) == EOF) |
83 | /* Something went wrong. */ |
84 | return WEOF; |
85 | |
86 | to_do -= new_data - data; |
87 | |
88 | /* Next see whether we had problems during the conversion. If yes, |
89 | we cannot go on. */ |
90 | if (result != __codecvt_ok |
91 | && (result != __codecvt_partial || new_data - data == 0)) |
92 | break; |
93 | |
94 | data = new_data; |
95 | } |
96 | while (to_do > 0); |
97 | } |
98 | |
99 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base, |
100 | fp->_wide_data->_IO_buf_base); |
101 | fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr |
102 | = fp->_wide_data->_IO_buf_base; |
103 | fp->_wide_data->_IO_write_end = ((fp->_flags & (_IO_LINE_BUF | _IO_UNBUFFERED)) |
104 | ? fp->_wide_data->_IO_buf_base |
105 | : fp->_wide_data->_IO_buf_end); |
106 | |
107 | return to_do == 0 ? 0 : WEOF; |
108 | } |
109 | libc_hidden_def (_IO_wdo_write) |
110 | |
111 | |
112 | wint_t |
113 | _IO_wfile_underflow (_IO_FILE *fp) |
114 | { |
115 | struct _IO_codecvt *cd; |
116 | enum __codecvt_result status; |
117 | _IO_ssize_t count; |
118 | |
119 | if (__glibc_unlikely (fp->_flags & _IO_NO_READS)) |
120 | { |
121 | fp->_flags |= _IO_ERR_SEEN; |
122 | __set_errno (EBADF); |
123 | return WEOF; |
124 | } |
125 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) |
126 | return *fp->_wide_data->_IO_read_ptr; |
127 | |
128 | cd = fp->_codecvt; |
129 | |
130 | /* Maybe there is something left in the external buffer. */ |
131 | if (fp->_IO_read_ptr < fp->_IO_read_end) |
132 | { |
133 | /* There is more in the external. Convert it. */ |
134 | const char *read_stop = (const char *) fp->_IO_read_ptr; |
135 | |
136 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; |
137 | fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr = |
138 | fp->_wide_data->_IO_buf_base; |
139 | status = (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state, |
140 | fp->_IO_read_ptr, fp->_IO_read_end, |
141 | &read_stop, |
142 | fp->_wide_data->_IO_read_ptr, |
143 | fp->_wide_data->_IO_buf_end, |
144 | &fp->_wide_data->_IO_read_end); |
145 | |
146 | fp->_IO_read_base = fp->_IO_read_ptr; |
147 | fp->_IO_read_ptr = (char *) read_stop; |
148 | |
149 | /* If we managed to generate some text return the next character. */ |
150 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) |
151 | return *fp->_wide_data->_IO_read_ptr; |
152 | |
153 | if (status == __codecvt_error) |
154 | { |
155 | __set_errno (EILSEQ); |
156 | fp->_flags |= _IO_ERR_SEEN; |
157 | return WEOF; |
158 | } |
159 | |
160 | /* Move the remaining content of the read buffer to the beginning. */ |
161 | memmove (fp->_IO_buf_base, fp->_IO_read_ptr, |
162 | fp->_IO_read_end - fp->_IO_read_ptr); |
163 | fp->_IO_read_end = (fp->_IO_buf_base |
164 | + (fp->_IO_read_end - fp->_IO_read_ptr)); |
165 | fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_buf_base; |
166 | } |
167 | else |
168 | fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_read_end = |
169 | fp->_IO_buf_base; |
170 | |
171 | if (fp->_IO_buf_base == NULL) |
172 | { |
173 | /* Maybe we already have a push back pointer. */ |
174 | if (fp->_IO_save_base != NULL) |
175 | { |
176 | free (fp->_IO_save_base); |
177 | fp->_flags &= ~_IO_IN_BACKUP; |
178 | } |
179 | _IO_doallocbuf (fp); |
180 | |
181 | fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_read_end = |
182 | fp->_IO_buf_base; |
183 | } |
184 | |
185 | fp->_IO_write_base = fp->_IO_write_ptr = fp->_IO_write_end = |
186 | fp->_IO_buf_base; |
187 | |
188 | if (fp->_wide_data->_IO_buf_base == NULL) |
189 | { |
190 | /* Maybe we already have a push back pointer. */ |
191 | if (fp->_wide_data->_IO_save_base != NULL) |
192 | { |
193 | free (fp->_wide_data->_IO_save_base); |
194 | fp->_flags &= ~_IO_IN_BACKUP; |
195 | } |
196 | _IO_wdoallocbuf (fp); |
197 | } |
198 | |
199 | /* Flush all line buffered files before reading. */ |
200 | /* FIXME This can/should be moved to genops ?? */ |
201 | if (fp->_flags & (_IO_LINE_BUF | _IO_UNBUFFERED)) |
202 | { |
203 | #if 0 |
204 | _IO_flush_all_linebuffered (); |
205 | #else |
206 | /* We used to flush all line-buffered stream. This really isn't |
207 | required by any standard. My recollection is that |
208 | traditional Unix systems did this for stdout. stderr better |
209 | not be line buffered. So we do just that here |
210 | explicitly. --drepper */ |
211 | _IO_acquire_lock (_IO_stdout); |
212 | |
213 | if ((_IO_stdout->_flags & (_IO_LINKED | _IO_NO_WRITES | _IO_LINE_BUF)) |
214 | == (_IO_LINKED | _IO_LINE_BUF)) |
215 | _IO_OVERFLOW (_IO_stdout, EOF); |
216 | |
217 | _IO_release_lock (_IO_stdout); |
218 | #endif |
219 | } |
220 | |
221 | _IO_switch_to_get_mode (fp); |
222 | |
223 | fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr = |
224 | fp->_wide_data->_IO_buf_base; |
225 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_buf_base; |
226 | fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr = |
227 | fp->_wide_data->_IO_write_end = fp->_wide_data->_IO_buf_base; |
228 | |
229 | const char *read_ptr_copy; |
230 | char accbuf[MB_LEN_MAX]; |
231 | size_t naccbuf = 0; |
232 | again: |
233 | count = _IO_SYSREAD (fp, fp->_IO_read_end, |
234 | fp->_IO_buf_end - fp->_IO_read_end); |
235 | if (count <= 0) |
236 | { |
237 | if (count == 0 && naccbuf == 0) |
238 | { |
239 | fp->_flags |= _IO_EOF_SEEN; |
240 | fp->_offset = _IO_pos_BAD; |
241 | } |
242 | else |
243 | fp->_flags |= _IO_ERR_SEEN, count = 0; |
244 | } |
245 | fp->_IO_read_end += count; |
246 | if (count == 0) |
247 | { |
248 | if (naccbuf != 0) |
249 | /* There are some bytes in the external buffer but they don't |
250 | convert to anything. */ |
251 | __set_errno (EILSEQ); |
252 | return WEOF; |
253 | } |
254 | if (fp->_offset != _IO_pos_BAD) |
255 | _IO_pos_adjust (fp->_offset, count); |
256 | |
257 | /* Now convert the read input. */ |
258 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; |
259 | fp->_IO_read_base = fp->_IO_read_ptr; |
260 | const char *from = fp->_IO_read_ptr; |
261 | const char *to = fp->_IO_read_end; |
262 | size_t to_copy = count; |
263 | if (__glibc_unlikely (naccbuf != 0)) |
264 | { |
265 | to_copy = MIN (sizeof (accbuf) - naccbuf, count); |
266 | to = __mempcpy (&accbuf[naccbuf], from, to_copy); |
267 | naccbuf += to_copy; |
268 | from = accbuf; |
269 | } |
270 | status = (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state, |
271 | from, to, &read_ptr_copy, |
272 | fp->_wide_data->_IO_read_end, |
273 | fp->_wide_data->_IO_buf_end, |
274 | &fp->_wide_data->_IO_read_end); |
275 | |
276 | if (__glibc_unlikely (naccbuf != 0)) |
277 | fp->_IO_read_ptr += MAX (0, read_ptr_copy - &accbuf[naccbuf - to_copy]); |
278 | else |
279 | fp->_IO_read_ptr = (char *) read_ptr_copy; |
280 | if (fp->_wide_data->_IO_read_end == fp->_wide_data->_IO_buf_base) |
281 | { |
282 | if (status == __codecvt_error) |
283 | { |
284 | out_eilseq: |
285 | __set_errno (EILSEQ); |
286 | fp->_flags |= _IO_ERR_SEEN; |
287 | return WEOF; |
288 | } |
289 | |
290 | /* The read bytes make no complete character. Try reading again. */ |
291 | assert (status == __codecvt_partial); |
292 | |
293 | if (naccbuf == 0) |
294 | { |
295 | if (fp->_IO_read_base < fp->_IO_read_ptr) |
296 | { |
297 | /* Partially used the buffer for some input data that |
298 | produces no output. */ |
299 | size_t avail = fp->_IO_read_end - fp->_IO_read_ptr; |
300 | memmove (fp->_IO_read_base, fp->_IO_read_ptr, avail); |
301 | fp->_IO_read_ptr = fp->_IO_read_base; |
302 | fp->_IO_read_end -= avail; |
303 | goto again; |
304 | } |
305 | naccbuf = fp->_IO_read_end - fp->_IO_read_ptr; |
306 | if (naccbuf >= sizeof (accbuf)) |
307 | goto out_eilseq; |
308 | |
309 | memcpy (accbuf, fp->_IO_read_ptr, naccbuf); |
310 | } |
311 | else |
312 | { |
313 | size_t used = read_ptr_copy - accbuf; |
314 | if (used > 0) |
315 | { |
316 | memmove (accbuf, read_ptr_copy, naccbuf - used); |
317 | naccbuf -= used; |
318 | } |
319 | |
320 | if (naccbuf == sizeof (accbuf)) |
321 | goto out_eilseq; |
322 | } |
323 | |
324 | fp->_IO_read_ptr = fp->_IO_read_end = fp->_IO_read_base; |
325 | |
326 | goto again; |
327 | } |
328 | |
329 | return *fp->_wide_data->_IO_read_ptr; |
330 | } |
331 | libc_hidden_def (_IO_wfile_underflow) |
332 | |
333 | |
334 | static wint_t |
335 | _IO_wfile_underflow_mmap (_IO_FILE *fp) |
336 | { |
337 | struct _IO_codecvt *cd; |
338 | const char *read_stop; |
339 | |
340 | if (__glibc_unlikely (fp->_flags & _IO_NO_READS)) |
341 | { |
342 | fp->_flags |= _IO_ERR_SEEN; |
343 | __set_errno (EBADF); |
344 | return WEOF; |
345 | } |
346 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) |
347 | return *fp->_wide_data->_IO_read_ptr; |
348 | |
349 | cd = fp->_codecvt; |
350 | |
351 | /* Maybe there is something left in the external buffer. */ |
352 | if (fp->_IO_read_ptr >= fp->_IO_read_end |
353 | /* No. But maybe the read buffer is not fully set up. */ |
354 | && _IO_file_underflow_mmap (fp) == EOF) |
355 | /* Nothing available. _IO_file_underflow_mmap has set the EOF or error |
356 | flags as appropriate. */ |
357 | return WEOF; |
358 | |
359 | /* There is more in the external. Convert it. */ |
360 | read_stop = (const char *) fp->_IO_read_ptr; |
361 | |
362 | if (fp->_wide_data->_IO_buf_base == NULL) |
363 | { |
364 | /* Maybe we already have a push back pointer. */ |
365 | if (fp->_wide_data->_IO_save_base != NULL) |
366 | { |
367 | free (fp->_wide_data->_IO_save_base); |
368 | fp->_flags &= ~_IO_IN_BACKUP; |
369 | } |
370 | _IO_wdoallocbuf (fp); |
371 | } |
372 | |
373 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; |
374 | fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr = |
375 | fp->_wide_data->_IO_buf_base; |
376 | (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state, |
377 | fp->_IO_read_ptr, fp->_IO_read_end, |
378 | &read_stop, |
379 | fp->_wide_data->_IO_read_ptr, |
380 | fp->_wide_data->_IO_buf_end, |
381 | &fp->_wide_data->_IO_read_end); |
382 | |
383 | fp->_IO_read_ptr = (char *) read_stop; |
384 | |
385 | /* If we managed to generate some text return the next character. */ |
386 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) |
387 | return *fp->_wide_data->_IO_read_ptr; |
388 | |
389 | /* There is some garbage at the end of the file. */ |
390 | __set_errno (EILSEQ); |
391 | fp->_flags |= _IO_ERR_SEEN; |
392 | return WEOF; |
393 | } |
394 | |
395 | static wint_t |
396 | _IO_wfile_underflow_maybe_mmap (_IO_FILE *fp) |
397 | { |
398 | /* This is the first read attempt. Doing the underflow will choose mmap |
399 | or vanilla operations and then punt to the chosen underflow routine. |
400 | Then we can punt to ours. */ |
401 | if (_IO_file_underflow_maybe_mmap (fp) == EOF) |
402 | return WEOF; |
403 | |
404 | return _IO_WUNDERFLOW (fp); |
405 | } |
406 | |
407 | |
408 | wint_t |
409 | _IO_wfile_overflow (_IO_FILE *f, wint_t wch) |
410 | { |
411 | if (f->_flags & _IO_NO_WRITES) /* SET ERROR */ |
412 | { |
413 | f->_flags |= _IO_ERR_SEEN; |
414 | __set_errno (EBADF); |
415 | return WEOF; |
416 | } |
417 | /* If currently reading or no buffer allocated. */ |
418 | if ((f->_flags & _IO_CURRENTLY_PUTTING) == 0) |
419 | { |
420 | /* Allocate a buffer if needed. */ |
421 | if (f->_wide_data->_IO_write_base == 0) |
422 | { |
423 | _IO_wdoallocbuf (f); |
424 | _IO_free_wbackup_area (f); |
425 | _IO_wsetg (f, f->_wide_data->_IO_buf_base, |
426 | f->_wide_data->_IO_buf_base, f->_wide_data->_IO_buf_base); |
427 | |
428 | if (f->_IO_write_base == NULL) |
429 | { |
430 | _IO_doallocbuf (f); |
431 | _IO_setg (f, f->_IO_buf_base, f->_IO_buf_base, f->_IO_buf_base); |
432 | } |
433 | } |
434 | else |
435 | { |
436 | /* Otherwise must be currently reading. If _IO_read_ptr |
437 | (and hence also _IO_read_end) is at the buffer end, |
438 | logically slide the buffer forwards one block (by setting |
439 | the read pointers to all point at the beginning of the |
440 | block). This makes room for subsequent output. |
441 | Otherwise, set the read pointers to _IO_read_end (leaving |
442 | that alone, so it can continue to correspond to the |
443 | external position). */ |
444 | if (f->_wide_data->_IO_read_ptr == f->_wide_data->_IO_buf_end) |
445 | { |
446 | f->_IO_read_end = f->_IO_read_ptr = f->_IO_buf_base; |
447 | f->_wide_data->_IO_read_end = f->_wide_data->_IO_read_ptr = |
448 | f->_wide_data->_IO_buf_base; |
449 | } |
450 | } |
451 | f->_wide_data->_IO_write_ptr = f->_wide_data->_IO_read_ptr; |
452 | f->_wide_data->_IO_write_base = f->_wide_data->_IO_write_ptr; |
453 | f->_wide_data->_IO_write_end = f->_wide_data->_IO_buf_end; |
454 | f->_wide_data->_IO_read_base = f->_wide_data->_IO_read_ptr = |
455 | f->_wide_data->_IO_read_end; |
456 | |
457 | f->_IO_write_ptr = f->_IO_read_ptr; |
458 | f->_IO_write_base = f->_IO_write_ptr; |
459 | f->_IO_write_end = f->_IO_buf_end; |
460 | f->_IO_read_base = f->_IO_read_ptr = f->_IO_read_end; |
461 | |
462 | f->_flags |= _IO_CURRENTLY_PUTTING; |
463 | if (f->_flags & (_IO_LINE_BUF | _IO_UNBUFFERED)) |
464 | f->_wide_data->_IO_write_end = f->_wide_data->_IO_write_ptr; |
465 | } |
466 | if (wch == WEOF) |
467 | return _IO_do_flush (f); |
468 | if (f->_wide_data->_IO_write_ptr == f->_wide_data->_IO_buf_end) |
469 | /* Buffer is really full */ |
470 | if (_IO_do_flush (f) == EOF) |
471 | return WEOF; |
472 | *f->_wide_data->_IO_write_ptr++ = wch; |
473 | if ((f->_flags & _IO_UNBUFFERED) |
474 | || ((f->_flags & _IO_LINE_BUF) && wch == L'\n')) |
475 | if (_IO_do_flush (f) == EOF) |
476 | return WEOF; |
477 | return wch; |
478 | } |
479 | libc_hidden_def (_IO_wfile_overflow) |
480 | |
481 | wint_t |
482 | _IO_wfile_sync (_IO_FILE *fp) |
483 | { |
484 | _IO_ssize_t delta; |
485 | wint_t retval = 0; |
486 | |
487 | /* char* ptr = cur_ptr(); */ |
488 | if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_write_base) |
489 | if (_IO_do_flush (fp)) |
490 | return WEOF; |
491 | delta = fp->_wide_data->_IO_read_ptr - fp->_wide_data->_IO_read_end; |
492 | if (delta != 0) |
493 | { |
494 | /* We have to find out how many bytes we have to go back in the |
495 | external buffer. */ |
496 | struct _IO_codecvt *cv = fp->_codecvt; |
497 | _IO_off64_t new_pos; |
498 | |
499 | int clen = (*cv->__codecvt_do_encoding) (cv); |
500 | |
501 | if (clen > 0) |
502 | /* It is easy, a fixed number of input bytes are used for each |
503 | wide character. */ |
504 | delta *= clen; |
505 | else |
506 | { |
507 | /* We have to find out the hard way how much to back off. |
508 | To do this we determine how much input we needed to |
509 | generate the wide characters up to the current reading |
510 | position. */ |
511 | int nread; |
512 | size_t wnread = (fp->_wide_data->_IO_read_ptr |
513 | - fp->_wide_data->_IO_read_base); |
514 | fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state; |
515 | nread = (*cv->__codecvt_do_length) (cv, &fp->_wide_data->_IO_state, |
516 | fp->_IO_read_base, |
517 | fp->_IO_read_end, wnread); |
518 | fp->_IO_read_ptr = fp->_IO_read_base + nread; |
519 | delta = -(fp->_IO_read_end - fp->_IO_read_base - nread); |
520 | } |
521 | |
522 | new_pos = _IO_SYSSEEK (fp, delta, 1); |
523 | if (new_pos != (_IO_off64_t) EOF) |
524 | { |
525 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr; |
526 | fp->_IO_read_end = fp->_IO_read_ptr; |
527 | } |
528 | else if (errno == ESPIPE) |
529 | ; /* Ignore error from unseekable devices. */ |
530 | else |
531 | retval = WEOF; |
532 | } |
533 | if (retval != WEOF) |
534 | fp->_offset = _IO_pos_BAD; |
535 | /* FIXME: Cleanup - can this be shared? */ |
536 | /* setg(base(), ptr, ptr); */ |
537 | return retval; |
538 | } |
539 | libc_hidden_def (_IO_wfile_sync) |
540 | |
541 | /* Adjust the internal buffer pointers to reflect the state in the external |
542 | buffer. The content between fp->_IO_read_base and fp->_IO_read_ptr is |
543 | assumed to be converted and available in the range |
544 | fp->_wide_data->_IO_read_base and fp->_wide_data->_IO_read_end. |
545 | |
546 | Returns 0 on success and -1 on error with the _IO_ERR_SEEN flag set. */ |
547 | static int |
548 | adjust_wide_data (_IO_FILE *fp, bool do_convert) |
549 | { |
550 | struct _IO_codecvt *cv = fp->_codecvt; |
551 | |
552 | int clen = (*cv->__codecvt_do_encoding) (cv); |
553 | |
554 | /* Take the easy way out for constant length encodings if we don't need to |
555 | convert. */ |
556 | if (!do_convert && clen > 0) |
557 | { |
558 | fp->_wide_data->_IO_read_end += ((fp->_IO_read_ptr - fp->_IO_read_base) |
559 | / clen); |
560 | goto done; |
561 | } |
562 | |
563 | enum __codecvt_result status; |
564 | const char *read_stop = (const char *) fp->_IO_read_base; |
565 | do |
566 | { |
567 | |
568 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; |
569 | status = (*cv->__codecvt_do_in) (cv, &fp->_wide_data->_IO_state, |
570 | fp->_IO_read_base, fp->_IO_read_ptr, |
571 | &read_stop, |
572 | fp->_wide_data->_IO_read_base, |
573 | fp->_wide_data->_IO_buf_end, |
574 | &fp->_wide_data->_IO_read_end); |
575 | |
576 | /* Should we return EILSEQ? */ |
577 | if (__glibc_unlikely (status == __codecvt_error)) |
578 | { |
579 | fp->_flags |= _IO_ERR_SEEN; |
580 | return -1; |
581 | } |
582 | } |
583 | while (__builtin_expect (status == __codecvt_partial, 0)); |
584 | |
585 | done: |
586 | /* Now seek to _IO_read_end to behave as if we have read it all in. */ |
587 | fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end; |
588 | |
589 | return 0; |
590 | } |
591 | |
592 | /* ftell{,o} implementation for wide mode. Don't modify any state of the file |
593 | pointer while we try to get the current state of the stream except in one |
594 | case, which is when we have unflushed writes in append mode. */ |
595 | static _IO_off64_t |
596 | do_ftell_wide (_IO_FILE *fp) |
597 | { |
598 | _IO_off64_t result, offset = 0; |
599 | |
600 | /* No point looking for offsets in the buffer if it hasn't even been |
601 | allocated. */ |
602 | if (fp->_wide_data->_IO_buf_base != NULL) |
603 | { |
604 | const wchar_t *wide_read_base; |
605 | const wchar_t *wide_read_ptr; |
606 | const wchar_t *wide_read_end; |
607 | bool unflushed_writes = (fp->_wide_data->_IO_write_ptr |
608 | > fp->_wide_data->_IO_write_base); |
609 | |
610 | bool append_mode = (fp->_flags & _IO_IS_APPENDING) == _IO_IS_APPENDING; |
611 | |
612 | /* When we have unflushed writes in append mode, seek to the end of the |
613 | file and record that offset. This is the only time we change the file |
614 | stream state and it is safe since the file handle is active. */ |
615 | if (unflushed_writes && append_mode) |
616 | { |
617 | result = _IO_SYSSEEK (fp, 0, _IO_seek_end); |
618 | if (result == _IO_pos_BAD) |
619 | return EOF; |
620 | else |
621 | fp->_offset = result; |
622 | } |
623 | |
624 | /* XXX For wide stream with backup store it is not very |
625 | reasonable to determine the offset. The pushed-back |
626 | character might require a state change and we need not be |
627 | able to compute the initial state by reverse transformation |
628 | since there is no guarantee of symmetry. So we don't even |
629 | try and return an error. */ |
630 | if (_IO_in_backup (fp)) |
631 | { |
632 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) |
633 | { |
634 | __set_errno (EINVAL); |
635 | return -1; |
636 | } |
637 | |
638 | /* Nothing in the backup store, so note the backed up pointers |
639 | without changing the state. */ |
640 | wide_read_base = fp->_wide_data->_IO_save_base; |
641 | wide_read_ptr = wide_read_base; |
642 | wide_read_end = fp->_wide_data->_IO_save_end; |
643 | } |
644 | else |
645 | { |
646 | wide_read_base = fp->_wide_data->_IO_read_base; |
647 | wide_read_ptr = fp->_wide_data->_IO_read_ptr; |
648 | wide_read_end = fp->_wide_data->_IO_read_end; |
649 | } |
650 | |
651 | struct _IO_codecvt *cv = fp->_codecvt; |
652 | int clen = (*cv->__codecvt_do_encoding) (cv); |
653 | |
654 | if (!unflushed_writes) |
655 | { |
656 | if (clen > 0) |
657 | { |
658 | offset -= (wide_read_end - wide_read_ptr) * clen; |
659 | offset -= fp->_IO_read_end - fp->_IO_read_ptr; |
660 | } |
661 | else |
662 | { |
663 | int nread; |
664 | |
665 | size_t delta = wide_read_ptr - wide_read_base; |
666 | __mbstate_t state = fp->_wide_data->_IO_last_state; |
667 | nread = (*cv->__codecvt_do_length) (cv, &state, |
668 | fp->_IO_read_base, |
669 | fp->_IO_read_end, delta); |
670 | offset -= fp->_IO_read_end - fp->_IO_read_base - nread; |
671 | } |
672 | } |
673 | else |
674 | { |
675 | if (clen > 0) |
676 | offset += (fp->_wide_data->_IO_write_ptr |
677 | - fp->_wide_data->_IO_write_base) * clen; |
678 | else |
679 | { |
680 | size_t delta = (fp->_wide_data->_IO_write_ptr |
681 | - fp->_wide_data->_IO_write_base); |
682 | |
683 | /* Allocate enough space for the conversion. */ |
684 | size_t outsize = delta * sizeof (wchar_t); |
685 | char *out = malloc (outsize); |
686 | char *outstop = out; |
687 | const wchar_t *in = fp->_wide_data->_IO_write_base; |
688 | |
689 | enum __codecvt_result status; |
690 | |
691 | __mbstate_t state = fp->_wide_data->_IO_last_state; |
692 | status = (*cv->__codecvt_do_out) (cv, &state, |
693 | in, in + delta, &in, |
694 | out, out + outsize, &outstop); |
695 | |
696 | /* We don't check for __codecvt_partial because it can be |
697 | returned on one of two conditions: either the output |
698 | buffer is full or the input sequence is incomplete. We |
699 | take care to allocate enough buffer and our input |
700 | sequences must be complete since they are accepted as |
701 | wchar_t; if not, then that is an error. */ |
702 | if (__glibc_unlikely (status != __codecvt_ok)) |
703 | { |
704 | free (out); |
705 | return WEOF; |
706 | } |
707 | |
708 | offset += outstop - out; |
709 | free (out); |
710 | } |
711 | |
712 | /* We don't trust _IO_read_end to represent the current file offset |
713 | when writing in append mode because the value would have to be |
714 | shifted to the end of the file during a flush. Use the write base |
715 | instead, along with the new offset we got above when we did a seek |
716 | to the end of the file. */ |
717 | if (append_mode) |
718 | offset += fp->_IO_write_ptr - fp->_IO_write_base; |
719 | /* For all other modes, _IO_read_end represents the file offset. */ |
720 | else |
721 | offset += fp->_IO_write_ptr - fp->_IO_read_end; |
722 | } |
723 | } |
724 | |
725 | if (fp->_offset != _IO_pos_BAD) |
726 | result = fp->_offset; |
727 | else |
728 | result = _IO_SYSSEEK (fp, 0, _IO_seek_cur); |
729 | |
730 | if (result == EOF) |
731 | return result; |
732 | |
733 | result += offset; |
734 | |
735 | if (result < 0) |
736 | { |
737 | __set_errno (EINVAL); |
738 | return EOF; |
739 | } |
740 | |
741 | return result; |
742 | } |
743 | |
744 | _IO_off64_t |
745 | _IO_wfile_seekoff (_IO_FILE *fp, _IO_off64_t offset, int dir, int mode) |
746 | { |
747 | _IO_off64_t result; |
748 | _IO_off64_t delta, new_offset; |
749 | long int count; |
750 | |
751 | /* Short-circuit into a separate function. We don't want to mix any |
752 | functionality and we don't want to touch anything inside the FILE |
753 | object. */ |
754 | if (mode == 0) |
755 | return do_ftell_wide (fp); |
756 | |
757 | /* POSIX.1 8.2.3.7 says that after a call the fflush() the file |
758 | offset of the underlying file must be exact. */ |
759 | int must_be_exact = ((fp->_wide_data->_IO_read_base |
760 | == fp->_wide_data->_IO_read_end) |
761 | && (fp->_wide_data->_IO_write_base |
762 | == fp->_wide_data->_IO_write_ptr)); |
763 | |
764 | bool was_writing = ((fp->_wide_data->_IO_write_ptr |
765 | > fp->_wide_data->_IO_write_base) |
766 | || _IO_in_put_mode (fp)); |
767 | |
768 | /* Flush unwritten characters. |
769 | (This may do an unneeded write if we seek within the buffer. |
770 | But to be able to switch to reading, we would need to set |
771 | egptr to pptr. That can't be done in the current design, |
772 | which assumes file_ptr() is eGptr. Anyway, since we probably |
773 | end up flushing when we close(), it doesn't make much difference.) |
774 | FIXME: simulate mem-mapped files. */ |
775 | if (was_writing && _IO_switch_to_wget_mode (fp)) |
776 | return WEOF; |
777 | |
778 | if (fp->_wide_data->_IO_buf_base == NULL) |
779 | { |
780 | /* It could be that we already have a pushback buffer. */ |
781 | if (fp->_wide_data->_IO_read_base != NULL) |
782 | { |
783 | free (fp->_wide_data->_IO_read_base); |
784 | fp->_flags &= ~_IO_IN_BACKUP; |
785 | } |
786 | _IO_doallocbuf (fp); |
787 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); |
788 | _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); |
789 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, |
790 | fp->_wide_data->_IO_buf_base); |
791 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
792 | fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); |
793 | } |
794 | |
795 | switch (dir) |
796 | { |
797 | struct _IO_codecvt *cv; |
798 | int clen; |
799 | |
800 | case _IO_seek_cur: |
801 | /* Adjust for read-ahead (bytes is buffer). To do this we must |
802 | find out which position in the external buffer corresponds to |
803 | the current position in the internal buffer. */ |
804 | cv = fp->_codecvt; |
805 | clen = (*cv->__codecvt_do_encoding) (cv); |
806 | |
807 | if (mode != 0 || !was_writing) |
808 | { |
809 | if (clen > 0) |
810 | { |
811 | offset -= (fp->_wide_data->_IO_read_end |
812 | - fp->_wide_data->_IO_read_ptr) * clen; |
813 | /* Adjust by readahead in external buffer. */ |
814 | offset -= fp->_IO_read_end - fp->_IO_read_ptr; |
815 | } |
816 | else |
817 | { |
818 | int nread; |
819 | |
820 | delta = (fp->_wide_data->_IO_read_ptr |
821 | - fp->_wide_data->_IO_read_base); |
822 | fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state; |
823 | nread = (*cv->__codecvt_do_length) (cv, |
824 | &fp->_wide_data->_IO_state, |
825 | fp->_IO_read_base, |
826 | fp->_IO_read_end, delta); |
827 | fp->_IO_read_ptr = fp->_IO_read_base + nread; |
828 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr; |
829 | offset -= fp->_IO_read_end - fp->_IO_read_base - nread; |
830 | } |
831 | } |
832 | |
833 | if (fp->_offset == _IO_pos_BAD) |
834 | goto dumb; |
835 | |
836 | /* Make offset absolute, assuming current pointer is file_ptr(). */ |
837 | offset += fp->_offset; |
838 | |
839 | dir = _IO_seek_set; |
840 | break; |
841 | case _IO_seek_set: |
842 | break; |
843 | case _IO_seek_end: |
844 | { |
845 | struct stat64 st; |
846 | if (_IO_SYSSTAT (fp, &st) == 0 && S_ISREG (st.st_mode)) |
847 | { |
848 | offset += st.st_size; |
849 | dir = _IO_seek_set; |
850 | } |
851 | else |
852 | goto dumb; |
853 | } |
854 | } |
855 | |
856 | _IO_free_wbackup_area (fp); |
857 | |
858 | /* At this point, dir==_IO_seek_set. */ |
859 | |
860 | /* If destination is within current buffer, optimize: */ |
861 | if (fp->_offset != _IO_pos_BAD && fp->_IO_read_base != NULL |
862 | && !_IO_in_backup (fp)) |
863 | { |
864 | _IO_off64_t start_offset = (fp->_offset |
865 | - (fp->_IO_read_end - fp->_IO_buf_base)); |
866 | if (offset >= start_offset && offset < fp->_offset) |
867 | { |
868 | _IO_setg (fp, fp->_IO_buf_base, |
869 | fp->_IO_buf_base + (offset - start_offset), |
870 | fp->_IO_read_end); |
871 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); |
872 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
873 | fp->_wide_data->_IO_buf_base, |
874 | fp->_wide_data->_IO_buf_base); |
875 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, |
876 | fp->_wide_data->_IO_buf_base); |
877 | |
878 | if (adjust_wide_data (fp, false)) |
879 | goto dumb; |
880 | |
881 | _IO_mask_flags (fp, 0, _IO_EOF_SEEN); |
882 | goto resync; |
883 | } |
884 | } |
885 | |
886 | if (fp->_flags & _IO_NO_READS) |
887 | goto dumb; |
888 | |
889 | /* Try to seek to a block boundary, to improve kernel page management. */ |
890 | new_offset = offset & ~(fp->_IO_buf_end - fp->_IO_buf_base - 1); |
891 | delta = offset - new_offset; |
892 | if (delta > fp->_IO_buf_end - fp->_IO_buf_base) |
893 | { |
894 | new_offset = offset; |
895 | delta = 0; |
896 | } |
897 | result = _IO_SYSSEEK (fp, new_offset, 0); |
898 | if (result < 0) |
899 | return EOF; |
900 | if (delta == 0) |
901 | count = 0; |
902 | else |
903 | { |
904 | count = _IO_SYSREAD (fp, fp->_IO_buf_base, |
905 | (must_be_exact |
906 | ? delta : fp->_IO_buf_end - fp->_IO_buf_base)); |
907 | if (count < delta) |
908 | { |
909 | /* We weren't allowed to read, but try to seek the remainder. */ |
910 | offset = count == EOF ? delta : delta-count; |
911 | dir = _IO_seek_cur; |
912 | goto dumb; |
913 | } |
914 | } |
915 | _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base + delta, |
916 | fp->_IO_buf_base + count); |
917 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); |
918 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
919 | fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); |
920 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); |
921 | |
922 | if (adjust_wide_data (fp, true)) |
923 | goto dumb; |
924 | |
925 | fp->_offset = result + count; |
926 | _IO_mask_flags (fp, 0, _IO_EOF_SEEN); |
927 | return offset; |
928 | dumb: |
929 | |
930 | _IO_unsave_markers (fp); |
931 | result = _IO_SYSSEEK (fp, offset, dir); |
932 | if (result != EOF) |
933 | { |
934 | _IO_mask_flags (fp, 0, _IO_EOF_SEEN); |
935 | fp->_offset = result; |
936 | _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); |
937 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); |
938 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
939 | fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); |
940 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, |
941 | fp->_wide_data->_IO_buf_base); |
942 | } |
943 | return result; |
944 | |
945 | resync: |
946 | /* We need to do it since it is possible that the file offset in |
947 | the kernel may be changed behind our back. It may happen when |
948 | we fopen a file and then do a fork. One process may access the |
949 | file and the kernel file offset will be changed. */ |
950 | if (fp->_offset >= 0) |
951 | _IO_SYSSEEK (fp, fp->_offset, 0); |
952 | |
953 | return offset; |
954 | } |
955 | libc_hidden_def (_IO_wfile_seekoff) |
956 | |
957 | |
958 | _IO_size_t |
959 | _IO_wfile_xsputn (_IO_FILE *f, const void *data, _IO_size_t n) |
960 | { |
961 | const wchar_t *s = (const wchar_t *) data; |
962 | _IO_size_t to_do = n; |
963 | int must_flush = 0; |
964 | _IO_size_t count; |
965 | |
966 | if (n <= 0) |
967 | return 0; |
968 | /* This is an optimized implementation. |
969 | If the amount to be written straddles a block boundary |
970 | (or the filebuf is unbuffered), use sys_write directly. */ |
971 | |
972 | /* First figure out how much space is available in the buffer. */ |
973 | count = f->_wide_data->_IO_write_end - f->_wide_data->_IO_write_ptr; |
974 | if ((f->_flags & _IO_LINE_BUF) && (f->_flags & _IO_CURRENTLY_PUTTING)) |
975 | { |
976 | count = f->_wide_data->_IO_buf_end - f->_wide_data->_IO_write_ptr; |
977 | if (count >= n) |
978 | { |
979 | const wchar_t *p; |
980 | for (p = s + n; p > s; ) |
981 | { |
982 | if (*--p == L'\n') |
983 | { |
984 | count = p - s + 1; |
985 | must_flush = 1; |
986 | break; |
987 | } |
988 | } |
989 | } |
990 | } |
991 | /* Then fill the buffer. */ |
992 | if (count > 0) |
993 | { |
994 | if (count > to_do) |
995 | count = to_do; |
996 | if (count > 20) |
997 | { |
998 | f->_wide_data->_IO_write_ptr = |
999 | __wmempcpy (f->_wide_data->_IO_write_ptr, s, count); |
1000 | s += count; |
1001 | } |
1002 | else |
1003 | { |
1004 | wchar_t *p = f->_wide_data->_IO_write_ptr; |
1005 | int i = (int) count; |
1006 | while (--i >= 0) |
1007 | *p++ = *s++; |
1008 | f->_wide_data->_IO_write_ptr = p; |
1009 | } |
1010 | to_do -= count; |
1011 | } |
1012 | if (to_do > 0) |
1013 | to_do -= _IO_wdefault_xsputn (f, s, to_do); |
1014 | if (must_flush |
1015 | && f->_wide_data->_IO_write_ptr != f->_wide_data->_IO_write_base) |
1016 | _IO_wdo_write (f, f->_wide_data->_IO_write_base, |
1017 | f->_wide_data->_IO_write_ptr |
1018 | - f->_wide_data->_IO_write_base); |
1019 | |
1020 | return n - to_do; |
1021 | } |
1022 | libc_hidden_def (_IO_wfile_xsputn) |
1023 | |
1024 | |
1025 | const struct _IO_jump_t _IO_wfile_jumps libio_vtable = |
1026 | { |
1027 | JUMP_INIT_DUMMY, |
1028 | JUMP_INIT(finish, _IO_new_file_finish), |
1029 | JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow), |
1030 | JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow), |
1031 | JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow), |
1032 | JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), |
1033 | JUMP_INIT(xsputn, _IO_wfile_xsputn), |
1034 | JUMP_INIT(xsgetn, _IO_file_xsgetn), |
1035 | JUMP_INIT(seekoff, _IO_wfile_seekoff), |
1036 | JUMP_INIT(seekpos, _IO_default_seekpos), |
1037 | JUMP_INIT(setbuf, _IO_new_file_setbuf), |
1038 | JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync), |
1039 | JUMP_INIT(doallocate, _IO_wfile_doallocate), |
1040 | JUMP_INIT(read, _IO_file_read), |
1041 | JUMP_INIT(write, _IO_new_file_write), |
1042 | JUMP_INIT(seek, _IO_file_seek), |
1043 | JUMP_INIT(close, _IO_file_close), |
1044 | JUMP_INIT(stat, _IO_file_stat), |
1045 | JUMP_INIT(showmanyc, _IO_default_showmanyc), |
1046 | JUMP_INIT(imbue, _IO_default_imbue) |
1047 | }; |
1048 | libc_hidden_data_def (_IO_wfile_jumps) |
1049 | |
1050 | |
1051 | const struct _IO_jump_t _IO_wfile_jumps_mmap libio_vtable = |
1052 | { |
1053 | JUMP_INIT_DUMMY, |
1054 | JUMP_INIT(finish, _IO_new_file_finish), |
1055 | JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow), |
1056 | JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow_mmap), |
1057 | JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow), |
1058 | JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), |
1059 | JUMP_INIT(xsputn, _IO_wfile_xsputn), |
1060 | JUMP_INIT(xsgetn, _IO_file_xsgetn), |
1061 | JUMP_INIT(seekoff, _IO_wfile_seekoff), |
1062 | JUMP_INIT(seekpos, _IO_default_seekpos), |
1063 | JUMP_INIT(setbuf, _IO_file_setbuf_mmap), |
1064 | JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync), |
1065 | JUMP_INIT(doallocate, _IO_wfile_doallocate), |
1066 | JUMP_INIT(read, _IO_file_read), |
1067 | JUMP_INIT(write, _IO_new_file_write), |
1068 | JUMP_INIT(seek, _IO_file_seek), |
1069 | JUMP_INIT(close, _IO_file_close_mmap), |
1070 | JUMP_INIT(stat, _IO_file_stat), |
1071 | JUMP_INIT(showmanyc, _IO_default_showmanyc), |
1072 | JUMP_INIT(imbue, _IO_default_imbue) |
1073 | }; |
1074 | |
1075 | const struct _IO_jump_t _IO_wfile_jumps_maybe_mmap libio_vtable = |
1076 | { |
1077 | JUMP_INIT_DUMMY, |
1078 | JUMP_INIT(finish, _IO_new_file_finish), |
1079 | JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow), |
1080 | JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow_maybe_mmap), |
1081 | JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow), |
1082 | JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), |
1083 | JUMP_INIT(xsputn, _IO_wfile_xsputn), |
1084 | JUMP_INIT(xsgetn, _IO_file_xsgetn), |
1085 | JUMP_INIT(seekoff, _IO_wfile_seekoff), |
1086 | JUMP_INIT(seekpos, _IO_default_seekpos), |
1087 | JUMP_INIT(setbuf, _IO_file_setbuf_mmap), |
1088 | JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync), |
1089 | JUMP_INIT(doallocate, _IO_wfile_doallocate), |
1090 | JUMP_INIT(read, _IO_file_read), |
1091 | JUMP_INIT(write, _IO_new_file_write), |
1092 | JUMP_INIT(seek, _IO_file_seek), |
1093 | JUMP_INIT(close, _IO_file_close), |
1094 | JUMP_INIT(stat, _IO_file_stat), |
1095 | JUMP_INIT(showmanyc, _IO_default_showmanyc), |
1096 | JUMP_INIT(imbue, _IO_default_imbue) |
1097 | }; |
1098 | |