1 | /* Define ISO C stdio on top of C++ iostreams. |
2 | Copyright (C) 1991-2019 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 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | /* |
20 | * ISO C99 Standard: 7.19 Input/output <stdio.h> |
21 | */ |
22 | |
23 | #ifndef _STDIO_H |
24 | #define _STDIO_H 1 |
25 | |
26 | #define |
27 | #include <bits/libc-header-start.h> |
28 | |
29 | __BEGIN_DECLS |
30 | |
31 | #define __need_size_t |
32 | #define __need_NULL |
33 | #include <stddef.h> |
34 | |
35 | #define __need___va_list |
36 | #include <stdarg.h> |
37 | |
38 | #include <bits/types.h> |
39 | #include <bits/types/__fpos_t.h> |
40 | #include <bits/types/__fpos64_t.h> |
41 | #include <bits/types/__FILE.h> |
42 | #include <bits/types/FILE.h> |
43 | #include <bits/types/struct_FILE.h> |
44 | |
45 | #ifdef __USE_GNU |
46 | # include <bits/types/cookie_io_functions_t.h> |
47 | #endif |
48 | |
49 | #if defined __USE_XOPEN || defined __USE_XOPEN2K8 |
50 | # ifdef __GNUC__ |
51 | # ifndef _VA_LIST_DEFINED |
52 | typedef __gnuc_va_list va_list; |
53 | # define _VA_LIST_DEFINED |
54 | # endif |
55 | # else |
56 | # include <stdarg.h> |
57 | # endif |
58 | #endif |
59 | |
60 | #if defined __USE_UNIX98 || defined __USE_XOPEN2K |
61 | # ifndef __off_t_defined |
62 | # ifndef __USE_FILE_OFFSET64 |
63 | typedef __off_t off_t; |
64 | # else |
65 | typedef __off64_t off_t; |
66 | # endif |
67 | # define __off_t_defined |
68 | # endif |
69 | # if defined __USE_LARGEFILE64 && !defined __off64_t_defined |
70 | typedef __off64_t off64_t; |
71 | # define __off64_t_defined |
72 | # endif |
73 | #endif |
74 | |
75 | #ifdef __USE_XOPEN2K8 |
76 | # ifndef __ssize_t_defined |
77 | typedef __ssize_t ssize_t; |
78 | # define __ssize_t_defined |
79 | # endif |
80 | #endif |
81 | |
82 | /* The type of the second argument to `fgetpos' and `fsetpos'. */ |
83 | #ifndef __USE_FILE_OFFSET64 |
84 | typedef __fpos_t fpos_t; |
85 | #else |
86 | typedef __fpos64_t fpos_t; |
87 | #endif |
88 | #ifdef __USE_LARGEFILE64 |
89 | typedef __fpos64_t fpos64_t; |
90 | #endif |
91 | |
92 | /* The possibilities for the third argument to `setvbuf'. */ |
93 | #define _IOFBF 0 /* Fully buffered. */ |
94 | #define _IOLBF 1 /* Line buffered. */ |
95 | #define _IONBF 2 /* No buffering. */ |
96 | |
97 | |
98 | /* Default buffer size. */ |
99 | #define BUFSIZ 8192 |
100 | |
101 | |
102 | /* The value returned by fgetc and similar functions to indicate the |
103 | end of the file. */ |
104 | #define EOF (-1) |
105 | |
106 | |
107 | /* The possibilities for the third argument to `fseek'. |
108 | These values should not be changed. */ |
109 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
110 | #define SEEK_CUR 1 /* Seek from current position. */ |
111 | #define SEEK_END 2 /* Seek from end of file. */ |
112 | #ifdef __USE_GNU |
113 | # define SEEK_DATA 3 /* Seek to next data. */ |
114 | # define SEEK_HOLE 4 /* Seek to next hole. */ |
115 | #endif |
116 | |
117 | |
118 | #if defined __USE_MISC || defined __USE_XOPEN |
119 | /* Default path prefix for `tempnam' and `tmpnam'. */ |
120 | # define P_tmpdir "/tmp" |
121 | #endif |
122 | |
123 | |
124 | /* Get the values: |
125 | L_tmpnam How long an array of chars must be to be passed to `tmpnam'. |
126 | TMP_MAX The minimum number of unique filenames generated by tmpnam |
127 | (and tempnam when it uses tmpnam's name space), |
128 | or tempnam (the two are separate). |
129 | L_ctermid How long an array to pass to `ctermid'. |
130 | L_cuserid How long an array to pass to `cuserid'. |
131 | FOPEN_MAX Minimum number of files that can be open at once. |
132 | FILENAME_MAX Maximum length of a filename. */ |
133 | #include <bits/stdio_lim.h> |
134 | |
135 | |
136 | /* Standard streams. */ |
137 | extern FILE *stdin; /* Standard input stream. */ |
138 | extern FILE *stdout; /* Standard output stream. */ |
139 | extern FILE *stderr; /* Standard error output stream. */ |
140 | /* C89/C99 say they're macros. Make them happy. */ |
141 | #define stdin stdin |
142 | #define stdout stdout |
143 | #define stderr stderr |
144 | |
145 | /* Remove file FILENAME. */ |
146 | extern int remove (const char *__filename) __THROW; |
147 | /* Rename file OLD to NEW. */ |
148 | extern int rename (const char *__old, const char *__new) __THROW; |
149 | |
150 | #ifdef __USE_ATFILE |
151 | /* Rename file OLD relative to OLDFD to NEW relative to NEWFD. */ |
152 | extern int renameat (int __oldfd, const char *__old, int __newfd, |
153 | const char *__new) __THROW; |
154 | #endif |
155 | |
156 | #ifdef __USE_GNU |
157 | /* Flags for renameat2. */ |
158 | # define RENAME_NOREPLACE (1 << 0) |
159 | # define RENAME_EXCHANGE (1 << 1) |
160 | # define RENAME_WHITEOUT (1 << 2) |
161 | |
162 | /* Rename file OLD relative to OLDFD to NEW relative to NEWFD, with |
163 | additional flags. */ |
164 | extern int renameat2 (int __oldfd, const char *__old, int __newfd, |
165 | const char *__new, unsigned int __flags) __THROW; |
166 | #endif |
167 | |
168 | /* Create a temporary file and open it read/write. |
169 | |
170 | This function is a possible cancellation point and therefore not |
171 | marked with __THROW. */ |
172 | #ifndef __USE_FILE_OFFSET64 |
173 | extern FILE *tmpfile (void) __wur; |
174 | #else |
175 | # ifdef __REDIRECT |
176 | extern FILE *__REDIRECT (tmpfile, (void), tmpfile64) __wur; |
177 | # else |
178 | # define tmpfile tmpfile64 |
179 | # endif |
180 | #endif |
181 | |
182 | #ifdef __USE_LARGEFILE64 |
183 | extern FILE *tmpfile64 (void) __wur; |
184 | #endif |
185 | |
186 | /* Generate a temporary filename. */ |
187 | extern char *tmpnam (char *__s) __THROW __wur; |
188 | |
189 | #ifdef __USE_MISC |
190 | /* This is the reentrant variant of `tmpnam'. The only difference is |
191 | that it does not allow S to be NULL. */ |
192 | extern char *tmpnam_r (char *__s) __THROW __wur; |
193 | #endif |
194 | |
195 | |
196 | #if defined __USE_MISC || defined __USE_XOPEN |
197 | /* Generate a unique temporary filename using up to five characters of PFX |
198 | if it is not NULL. The directory to put this file in is searched for |
199 | as follows: First the environment variable "TMPDIR" is checked. |
200 | If it contains the name of a writable directory, that directory is used. |
201 | If not and if DIR is not NULL, that value is checked. If that fails, |
202 | P_tmpdir is tried and finally "/tmp". The storage for the filename |
203 | is allocated by `malloc'. */ |
204 | extern char *tempnam (const char *__dir, const char *__pfx) |
205 | __THROW __attribute_malloc__ __wur; |
206 | #endif |
207 | |
208 | |
209 | /* Close STREAM. |
210 | |
211 | This function is a possible cancellation point and therefore not |
212 | marked with __THROW. */ |
213 | extern int fclose (FILE *__stream); |
214 | /* Flush STREAM, or all streams if STREAM is NULL. |
215 | |
216 | This function is a possible cancellation point and therefore not |
217 | marked with __THROW. */ |
218 | extern int fflush (FILE *__stream); |
219 | |
220 | #ifdef __USE_MISC |
221 | /* Faster versions when locking is not required. |
222 | |
223 | This function is not part of POSIX and therefore no official |
224 | cancellation point. But due to similarity with an POSIX interface |
225 | or due to the implementation it is a cancellation point and |
226 | therefore not marked with __THROW. */ |
227 | extern int fflush_unlocked (FILE *__stream); |
228 | #endif |
229 | |
230 | #ifdef __USE_GNU |
231 | /* Close all streams. |
232 | |
233 | This function is not part of POSIX and therefore no official |
234 | cancellation point. But due to similarity with an POSIX interface |
235 | or due to the implementation it is a cancellation point and |
236 | therefore not marked with __THROW. */ |
237 | extern int fcloseall (void); |
238 | #endif |
239 | |
240 | |
241 | #ifndef __USE_FILE_OFFSET64 |
242 | /* Open a file and create a new stream for it. |
243 | |
244 | This function is a possible cancellation point and therefore not |
245 | marked with __THROW. */ |
246 | extern FILE *fopen (const char *__restrict __filename, |
247 | const char *__restrict __modes) __wur; |
248 | /* Open a file, replacing an existing stream with it. |
249 | |
250 | This function is a possible cancellation point and therefore not |
251 | marked with __THROW. */ |
252 | extern FILE *freopen (const char *__restrict __filename, |
253 | const char *__restrict __modes, |
254 | FILE *__restrict __stream) __wur; |
255 | #else |
256 | # ifdef __REDIRECT |
257 | extern FILE *__REDIRECT (fopen, (const char *__restrict __filename, |
258 | const char *__restrict __modes), fopen64) |
259 | __wur; |
260 | extern FILE *__REDIRECT (freopen, (const char *__restrict __filename, |
261 | const char *__restrict __modes, |
262 | FILE *__restrict __stream), freopen64) |
263 | __wur; |
264 | # else |
265 | # define fopen fopen64 |
266 | # define freopen freopen64 |
267 | # endif |
268 | #endif |
269 | #ifdef __USE_LARGEFILE64 |
270 | extern FILE *fopen64 (const char *__restrict __filename, |
271 | const char *__restrict __modes) __wur; |
272 | extern FILE *freopen64 (const char *__restrict __filename, |
273 | const char *__restrict __modes, |
274 | FILE *__restrict __stream) __wur; |
275 | #endif |
276 | |
277 | #ifdef __USE_POSIX |
278 | /* Create a new stream that refers to an existing system file descriptor. */ |
279 | extern FILE *fdopen (int __fd, const char *__modes) __THROW __wur; |
280 | #endif |
281 | |
282 | #ifdef __USE_GNU |
283 | /* Create a new stream that refers to the given magic cookie, |
284 | and uses the given functions for input and output. */ |
285 | extern FILE *fopencookie (void *__restrict __magic_cookie, |
286 | const char *__restrict __modes, |
287 | cookie_io_functions_t __io_funcs) __THROW __wur; |
288 | #endif |
289 | |
290 | #if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2) |
291 | /* Create a new stream that refers to a memory buffer. */ |
292 | extern FILE *fmemopen (void *__s, size_t __len, const char *__modes) |
293 | __THROW __wur; |
294 | |
295 | /* Open a stream that writes into a malloc'd buffer that is expanded as |
296 | necessary. *BUFLOC and *SIZELOC are updated with the buffer's location |
297 | and the number of characters written on fflush or fclose. */ |
298 | extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) __THROW __wur; |
299 | #endif |
300 | |
301 | |
302 | /* If BUF is NULL, make STREAM unbuffered. |
303 | Else make it use buffer BUF, of size BUFSIZ. */ |
304 | extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW; |
305 | /* Make STREAM use buffering mode MODE. |
306 | If BUF is not NULL, use N bytes of it for buffering; |
307 | else allocate an internal buffer N bytes long. */ |
308 | extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf, |
309 | int __modes, size_t __n) __THROW; |
310 | |
311 | #ifdef __USE_MISC |
312 | /* If BUF is NULL, make STREAM unbuffered. |
313 | Else make it use SIZE bytes of BUF for buffering. */ |
314 | extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf, |
315 | size_t __size) __THROW; |
316 | |
317 | /* Make STREAM line-buffered. */ |
318 | extern void setlinebuf (FILE *__stream) __THROW; |
319 | #endif |
320 | |
321 | |
322 | /* Write formatted output to STREAM. |
323 | |
324 | This function is a possible cancellation point and therefore not |
325 | marked with __THROW. */ |
326 | extern int fprintf (FILE *__restrict __stream, |
327 | const char *__restrict __format, ...); |
328 | /* Write formatted output to stdout. |
329 | |
330 | This function is a possible cancellation point and therefore not |
331 | marked with __THROW. */ |
332 | extern int printf (const char *__restrict __format, ...); |
333 | /* Write formatted output to S. */ |
334 | extern int sprintf (char *__restrict __s, |
335 | const char *__restrict __format, ...) __THROWNL; |
336 | |
337 | /* Write formatted output to S from argument list ARG. |
338 | |
339 | This function is a possible cancellation point and therefore not |
340 | marked with __THROW. */ |
341 | extern int vfprintf (FILE *__restrict __s, const char *__restrict __format, |
342 | __gnuc_va_list __arg); |
343 | /* Write formatted output to stdout from argument list ARG. |
344 | |
345 | This function is a possible cancellation point and therefore not |
346 | marked with __THROW. */ |
347 | extern int vprintf (const char *__restrict __format, __gnuc_va_list __arg); |
348 | /* Write formatted output to S from argument list ARG. */ |
349 | extern int vsprintf (char *__restrict __s, const char *__restrict __format, |
350 | __gnuc_va_list __arg) __THROWNL; |
351 | |
352 | #if defined __USE_ISOC99 || defined __USE_UNIX98 |
353 | /* Maximum chars of output to write in MAXLEN. */ |
354 | extern int snprintf (char *__restrict __s, size_t __maxlen, |
355 | const char *__restrict __format, ...) |
356 | __THROWNL __attribute__ ((__format__ (__printf__, 3, 4))); |
357 | |
358 | extern int vsnprintf (char *__restrict __s, size_t __maxlen, |
359 | const char *__restrict __format, __gnuc_va_list __arg) |
360 | __THROWNL __attribute__ ((__format__ (__printf__, 3, 0))); |
361 | #endif |
362 | |
363 | #if __GLIBC_USE (LIB_EXT2) |
364 | /* Write formatted output to a string dynamically allocated with `malloc'. |
365 | Store the address of the string in *PTR. */ |
366 | extern int vasprintf (char **__restrict __ptr, const char *__restrict __f, |
367 | __gnuc_va_list __arg) |
368 | __THROWNL __attribute__ ((__format__ (__printf__, 2, 0))) __wur; |
369 | extern int __asprintf (char **__restrict __ptr, |
370 | const char *__restrict __fmt, ...) |
371 | __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur; |
372 | extern int asprintf (char **__restrict __ptr, |
373 | const char *__restrict __fmt, ...) |
374 | __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur; |
375 | #endif |
376 | |
377 | #ifdef __USE_XOPEN2K8 |
378 | /* Write formatted output to a file descriptor. */ |
379 | extern int vdprintf (int __fd, const char *__restrict __fmt, |
380 | __gnuc_va_list __arg) |
381 | __attribute__ ((__format__ (__printf__, 2, 0))); |
382 | extern int dprintf (int __fd, const char *__restrict __fmt, ...) |
383 | __attribute__ ((__format__ (__printf__, 2, 3))); |
384 | #endif |
385 | |
386 | |
387 | /* Read formatted input from STREAM. |
388 | |
389 | This function is a possible cancellation point and therefore not |
390 | marked with __THROW. */ |
391 | extern int fscanf (FILE *__restrict __stream, |
392 | const char *__restrict __format, ...) __wur; |
393 | /* Read formatted input from stdin. |
394 | |
395 | This function is a possible cancellation point and therefore not |
396 | marked with __THROW. */ |
397 | extern int scanf (const char *__restrict __format, ...) __wur; |
398 | /* Read formatted input from S. */ |
399 | extern int sscanf (const char *__restrict __s, |
400 | const char *__restrict __format, ...) __THROW; |
401 | |
402 | /* For historical reasons, the C99-compliant versions of the scanf |
403 | functions are at alternative names. When __LDBL_COMPAT is in |
404 | effect, this is handled in bits/stdio-ldbl.h. */ |
405 | #if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT |
406 | # ifdef __REDIRECT |
407 | extern int __REDIRECT (fscanf, (FILE *__restrict __stream, |
408 | const char *__restrict __format, ...), |
409 | __isoc99_fscanf) __wur; |
410 | extern int __REDIRECT (scanf, (const char *__restrict __format, ...), |
411 | __isoc99_scanf) __wur; |
412 | extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s, |
413 | const char *__restrict __format, ...), |
414 | __isoc99_sscanf); |
415 | # else |
416 | extern int __isoc99_fscanf (FILE *__restrict __stream, |
417 | const char *__restrict __format, ...) __wur; |
418 | extern int __isoc99_scanf (const char *__restrict __format, ...) __wur; |
419 | extern int __isoc99_sscanf (const char *__restrict __s, |
420 | const char *__restrict __format, ...) __THROW; |
421 | # define fscanf __isoc99_fscanf |
422 | # define scanf __isoc99_scanf |
423 | # define sscanf __isoc99_sscanf |
424 | # endif |
425 | #endif |
426 | |
427 | #ifdef __USE_ISOC99 |
428 | /* Read formatted input from S into argument list ARG. |
429 | |
430 | This function is a possible cancellation point and therefore not |
431 | marked with __THROW. */ |
432 | extern int vfscanf (FILE *__restrict __s, const char *__restrict __format, |
433 | __gnuc_va_list __arg) |
434 | __attribute__ ((__format__ (__scanf__, 2, 0))) __wur; |
435 | |
436 | /* Read formatted input from stdin into argument list ARG. |
437 | |
438 | This function is a possible cancellation point and therefore not |
439 | marked with __THROW. */ |
440 | extern int vscanf (const char *__restrict __format, __gnuc_va_list __arg) |
441 | __attribute__ ((__format__ (__scanf__, 1, 0))) __wur; |
442 | |
443 | /* Read formatted input from S into argument list ARG. */ |
444 | extern int vsscanf (const char *__restrict __s, |
445 | const char *__restrict __format, __gnuc_va_list __arg) |
446 | __THROW __attribute__ ((__format__ (__scanf__, 2, 0))); |
447 | |
448 | /* Same redirection as above for the v*scanf family. */ |
449 | # if !__GLIBC_USE (DEPRECATED_SCANF) |
450 | # if defined __REDIRECT && !defined __LDBL_COMPAT |
451 | extern int __REDIRECT (vfscanf, |
452 | (FILE *__restrict __s, |
453 | const char *__restrict __format, __gnuc_va_list __arg), |
454 | __isoc99_vfscanf) |
455 | __attribute__ ((__format__ (__scanf__, 2, 0))) __wur; |
456 | extern int __REDIRECT (vscanf, (const char *__restrict __format, |
457 | __gnuc_va_list __arg), __isoc99_vscanf) |
458 | __attribute__ ((__format__ (__scanf__, 1, 0))) __wur; |
459 | extern int __REDIRECT_NTH (vsscanf, |
460 | (const char *__restrict __s, |
461 | const char *__restrict __format, |
462 | __gnuc_va_list __arg), __isoc99_vsscanf) |
463 | __attribute__ ((__format__ (__scanf__, 2, 0))); |
464 | # elif !defined __REDIRECT |
465 | extern int __isoc99_vfscanf (FILE *__restrict __s, |
466 | const char *__restrict __format, |
467 | __gnuc_va_list __arg) __wur; |
468 | extern int __isoc99_vscanf (const char *__restrict __format, |
469 | __gnuc_va_list __arg) __wur; |
470 | extern int __isoc99_vsscanf (const char *__restrict __s, |
471 | const char *__restrict __format, |
472 | __gnuc_va_list __arg) __THROW; |
473 | # define vfscanf __isoc99_vfscanf |
474 | # define vscanf __isoc99_vscanf |
475 | # define vsscanf __isoc99_vsscanf |
476 | # endif |
477 | # endif |
478 | #endif /* Use ISO C9x. */ |
479 | |
480 | |
481 | /* Read a character from STREAM. |
482 | |
483 | These functions are possible cancellation points and therefore not |
484 | marked with __THROW. */ |
485 | extern int fgetc (FILE *__stream); |
486 | extern int getc (FILE *__stream); |
487 | |
488 | /* Read a character from stdin. |
489 | |
490 | This function is a possible cancellation point and therefore not |
491 | marked with __THROW. */ |
492 | extern int getchar (void); |
493 | |
494 | #ifdef __USE_POSIX199506 |
495 | /* These are defined in POSIX.1:1996. |
496 | |
497 | These functions are possible cancellation points and therefore not |
498 | marked with __THROW. */ |
499 | extern int getc_unlocked (FILE *__stream); |
500 | extern int getchar_unlocked (void); |
501 | #endif /* Use POSIX. */ |
502 | |
503 | #ifdef __USE_MISC |
504 | /* Faster version when locking is not necessary. |
505 | |
506 | This function is not part of POSIX and therefore no official |
507 | cancellation point. But due to similarity with an POSIX interface |
508 | or due to the implementation it is a cancellation point and |
509 | therefore not marked with __THROW. */ |
510 | extern int fgetc_unlocked (FILE *__stream); |
511 | #endif /* Use MISC. */ |
512 | |
513 | |
514 | /* Write a character to STREAM. |
515 | |
516 | These functions are possible cancellation points and therefore not |
517 | marked with __THROW. |
518 | |
519 | These functions is a possible cancellation point and therefore not |
520 | marked with __THROW. */ |
521 | extern int fputc (int __c, FILE *__stream); |
522 | extern int putc (int __c, FILE *__stream); |
523 | |
524 | /* Write a character to stdout. |
525 | |
526 | This function is a possible cancellation point and therefore not |
527 | marked with __THROW. */ |
528 | extern int putchar (int __c); |
529 | |
530 | #ifdef __USE_MISC |
531 | /* Faster version when locking is not necessary. |
532 | |
533 | This function is not part of POSIX and therefore no official |
534 | cancellation point. But due to similarity with an POSIX interface |
535 | or due to the implementation it is a cancellation point and |
536 | therefore not marked with __THROW. */ |
537 | extern int fputc_unlocked (int __c, FILE *__stream); |
538 | #endif /* Use MISC. */ |
539 | |
540 | #ifdef __USE_POSIX199506 |
541 | /* These are defined in POSIX.1:1996. |
542 | |
543 | These functions are possible cancellation points and therefore not |
544 | marked with __THROW. */ |
545 | extern int putc_unlocked (int __c, FILE *__stream); |
546 | extern int putchar_unlocked (int __c); |
547 | #endif /* Use POSIX. */ |
548 | |
549 | |
550 | #if defined __USE_MISC \ |
551 | || (defined __USE_XOPEN && !defined __USE_XOPEN2K) |
552 | /* Get a word (int) from STREAM. */ |
553 | extern int getw (FILE *__stream); |
554 | |
555 | /* Write a word (int) to STREAM. */ |
556 | extern int putw (int __w, FILE *__stream); |
557 | #endif |
558 | |
559 | |
560 | /* Get a newline-terminated string of finite length from STREAM. |
561 | |
562 | This function is a possible cancellation point and therefore not |
563 | marked with __THROW. */ |
564 | extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream) |
565 | __wur; |
566 | |
567 | #if __GLIBC_USE (DEPRECATED_GETS) |
568 | /* Get a newline-terminated string from stdin, removing the newline. |
569 | |
570 | This function is impossible to use safely. It has been officially |
571 | removed from ISO C11 and ISO C++14, and we have also removed it |
572 | from the _GNU_SOURCE feature list. It remains available when |
573 | explicitly using an old ISO C, Unix, or POSIX standard. |
574 | |
575 | This function is a possible cancellation point and therefore not |
576 | marked with __THROW. */ |
577 | extern char *gets (char *__s) __wur __attribute_deprecated__; |
578 | #endif |
579 | |
580 | #ifdef __USE_GNU |
581 | /* This function does the same as `fgets' but does not lock the stream. |
582 | |
583 | This function is not part of POSIX and therefore no official |
584 | cancellation point. But due to similarity with an POSIX interface |
585 | or due to the implementation it is a cancellation point and |
586 | therefore not marked with __THROW. */ |
587 | extern char *fgets_unlocked (char *__restrict __s, int __n, |
588 | FILE *__restrict __stream) __wur; |
589 | #endif |
590 | |
591 | |
592 | #if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2) |
593 | /* Read up to (and including) a DELIMITER from STREAM into *LINEPTR |
594 | (and null-terminate it). *LINEPTR is a pointer returned from malloc (or |
595 | NULL), pointing to *N characters of space. It is realloc'd as |
596 | necessary. Returns the number of characters read (not including the |
597 | null terminator), or -1 on error or EOF. |
598 | |
599 | These functions are not part of POSIX and therefore no official |
600 | cancellation point. But due to similarity with an POSIX interface |
601 | or due to the implementation they are cancellation points and |
602 | therefore not marked with __THROW. */ |
603 | extern __ssize_t __getdelim (char **__restrict __lineptr, |
604 | size_t *__restrict __n, int __delimiter, |
605 | FILE *__restrict __stream) __wur; |
606 | extern __ssize_t getdelim (char **__restrict __lineptr, |
607 | size_t *__restrict __n, int __delimiter, |
608 | FILE *__restrict __stream) __wur; |
609 | |
610 | /* Like `getdelim', but reads up to a newline. |
611 | |
612 | This function is not part of POSIX and therefore no official |
613 | cancellation point. But due to similarity with an POSIX interface |
614 | or due to the implementation it is a cancellation point and |
615 | therefore not marked with __THROW. */ |
616 | extern __ssize_t getline (char **__restrict __lineptr, |
617 | size_t *__restrict __n, |
618 | FILE *__restrict __stream) __wur; |
619 | #endif |
620 | |
621 | |
622 | /* Write a string to STREAM. |
623 | |
624 | This function is a possible cancellation point and therefore not |
625 | marked with __THROW. */ |
626 | extern int fputs (const char *__restrict __s, FILE *__restrict __stream); |
627 | |
628 | /* Write a string, followed by a newline, to stdout. |
629 | |
630 | This function is a possible cancellation point and therefore not |
631 | marked with __THROW. */ |
632 | extern int puts (const char *__s); |
633 | |
634 | |
635 | /* Push a character back onto the input buffer of STREAM. |
636 | |
637 | This function is a possible cancellation point and therefore not |
638 | marked with __THROW. */ |
639 | extern int ungetc (int __c, FILE *__stream); |
640 | |
641 | |
642 | /* Read chunks of generic data from STREAM. |
643 | |
644 | This function is a possible cancellation point and therefore not |
645 | marked with __THROW. */ |
646 | extern size_t fread (void *__restrict __ptr, size_t __size, |
647 | size_t __n, FILE *__restrict __stream) __wur; |
648 | /* Write chunks of generic data to STREAM. |
649 | |
650 | This function is a possible cancellation point and therefore not |
651 | marked with __THROW. */ |
652 | extern size_t fwrite (const void *__restrict __ptr, size_t __size, |
653 | size_t __n, FILE *__restrict __s); |
654 | |
655 | #ifdef __USE_GNU |
656 | /* This function does the same as `fputs' but does not lock the stream. |
657 | |
658 | This function is not part of POSIX and therefore no official |
659 | cancellation point. But due to similarity with an POSIX interface |
660 | or due to the implementation it is a cancellation point and |
661 | therefore not marked with __THROW. */ |
662 | extern int fputs_unlocked (const char *__restrict __s, |
663 | FILE *__restrict __stream); |
664 | #endif |
665 | |
666 | #ifdef __USE_MISC |
667 | /* Faster versions when locking is not necessary. |
668 | |
669 | These functions are not part of POSIX and therefore no official |
670 | cancellation point. But due to similarity with an POSIX interface |
671 | or due to the implementation they are cancellation points and |
672 | therefore not marked with __THROW. */ |
673 | extern size_t fread_unlocked (void *__restrict __ptr, size_t __size, |
674 | size_t __n, FILE *__restrict __stream) __wur; |
675 | extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size, |
676 | size_t __n, FILE *__restrict __stream); |
677 | #endif |
678 | |
679 | |
680 | /* Seek to a certain position on STREAM. |
681 | |
682 | This function is a possible cancellation point and therefore not |
683 | marked with __THROW. */ |
684 | extern int fseek (FILE *__stream, long int __off, int __whence); |
685 | /* Return the current position of STREAM. |
686 | |
687 | This function is a possible cancellation point and therefore not |
688 | marked with __THROW. */ |
689 | extern long int ftell (FILE *__stream) __wur; |
690 | /* Rewind to the beginning of STREAM. |
691 | |
692 | This function is a possible cancellation point and therefore not |
693 | marked with __THROW. */ |
694 | extern void rewind (FILE *__stream); |
695 | |
696 | /* The Single Unix Specification, Version 2, specifies an alternative, |
697 | more adequate interface for the two functions above which deal with |
698 | file offset. `long int' is not the right type. These definitions |
699 | are originally defined in the Large File Support API. */ |
700 | |
701 | #if defined __USE_LARGEFILE || defined __USE_XOPEN2K |
702 | # ifndef __USE_FILE_OFFSET64 |
703 | /* Seek to a certain position on STREAM. |
704 | |
705 | This function is a possible cancellation point and therefore not |
706 | marked with __THROW. */ |
707 | extern int fseeko (FILE *__stream, __off_t __off, int __whence); |
708 | /* Return the current position of STREAM. |
709 | |
710 | This function is a possible cancellation point and therefore not |
711 | marked with __THROW. */ |
712 | extern __off_t ftello (FILE *__stream) __wur; |
713 | # else |
714 | # ifdef __REDIRECT |
715 | extern int __REDIRECT (fseeko, |
716 | (FILE *__stream, __off64_t __off, int __whence), |
717 | fseeko64); |
718 | extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64); |
719 | # else |
720 | # define fseeko fseeko64 |
721 | # define ftello ftello64 |
722 | # endif |
723 | # endif |
724 | #endif |
725 | |
726 | #ifndef __USE_FILE_OFFSET64 |
727 | /* Get STREAM's position. |
728 | |
729 | This function is a possible cancellation point and therefore not |
730 | marked with __THROW. */ |
731 | extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos); |
732 | /* Set STREAM's position. |
733 | |
734 | This function is a possible cancellation point and therefore not |
735 | marked with __THROW. */ |
736 | extern int fsetpos (FILE *__stream, const fpos_t *__pos); |
737 | #else |
738 | # ifdef __REDIRECT |
739 | extern int __REDIRECT (fgetpos, (FILE *__restrict __stream, |
740 | fpos_t *__restrict __pos), fgetpos64); |
741 | extern int __REDIRECT (fsetpos, |
742 | (FILE *__stream, const fpos_t *__pos), fsetpos64); |
743 | # else |
744 | # define fgetpos fgetpos64 |
745 | # define fsetpos fsetpos64 |
746 | # endif |
747 | #endif |
748 | |
749 | #ifdef __USE_LARGEFILE64 |
750 | extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence); |
751 | extern __off64_t ftello64 (FILE *__stream) __wur; |
752 | extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos); |
753 | extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos); |
754 | #endif |
755 | |
756 | /* Clear the error and EOF indicators for STREAM. */ |
757 | extern void clearerr (FILE *__stream) __THROW; |
758 | /* Return the EOF indicator for STREAM. */ |
759 | extern int feof (FILE *__stream) __THROW __wur; |
760 | /* Return the error indicator for STREAM. */ |
761 | extern int ferror (FILE *__stream) __THROW __wur; |
762 | |
763 | #ifdef __USE_MISC |
764 | /* Faster versions when locking is not required. */ |
765 | extern void clearerr_unlocked (FILE *__stream) __THROW; |
766 | extern int feof_unlocked (FILE *__stream) __THROW __wur; |
767 | extern int ferror_unlocked (FILE *__stream) __THROW __wur; |
768 | #endif |
769 | |
770 | |
771 | /* Print a message describing the meaning of the value of errno. |
772 | |
773 | This function is a possible cancellation point and therefore not |
774 | marked with __THROW. */ |
775 | extern void perror (const char *__s); |
776 | |
777 | /* Provide the declarations for `sys_errlist' and `sys_nerr' if they |
778 | are available on this system. Even if available, these variables |
779 | should not be used directly. The `strerror' function provides |
780 | all the necessary functionality. */ |
781 | #include <bits/sys_errlist.h> |
782 | |
783 | |
784 | #ifdef __USE_POSIX |
785 | /* Return the system file descriptor for STREAM. */ |
786 | extern int fileno (FILE *__stream) __THROW __wur; |
787 | #endif /* Use POSIX. */ |
788 | |
789 | #ifdef __USE_MISC |
790 | /* Faster version when locking is not required. */ |
791 | extern int fileno_unlocked (FILE *__stream) __THROW __wur; |
792 | #endif |
793 | |
794 | |
795 | #ifdef __USE_POSIX2 |
796 | /* Create a new stream connected to a pipe running the given command. |
797 | |
798 | This function is a possible cancellation point and therefore not |
799 | marked with __THROW. */ |
800 | extern FILE *popen (const char *__command, const char *__modes) __wur; |
801 | |
802 | /* Close a stream opened by popen and return the status of its child. |
803 | |
804 | This function is a possible cancellation point and therefore not |
805 | marked with __THROW. */ |
806 | extern int pclose (FILE *__stream); |
807 | #endif |
808 | |
809 | |
810 | #ifdef __USE_POSIX |
811 | /* Return the name of the controlling terminal. */ |
812 | extern char *ctermid (char *__s) __THROW; |
813 | #endif /* Use POSIX. */ |
814 | |
815 | |
816 | #if (defined __USE_XOPEN && !defined __USE_XOPEN2K) || defined __USE_GNU |
817 | /* Return the name of the current user. */ |
818 | extern char *cuserid (char *__s); |
819 | #endif /* Use X/Open, but not issue 6. */ |
820 | |
821 | |
822 | #ifdef __USE_GNU |
823 | struct obstack; /* See <obstack.h>. */ |
824 | |
825 | /* Write formatted output to an obstack. */ |
826 | extern int obstack_printf (struct obstack *__restrict __obstack, |
827 | const char *__restrict __format, ...) |
828 | __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))); |
829 | extern int obstack_vprintf (struct obstack *__restrict __obstack, |
830 | const char *__restrict __format, |
831 | __gnuc_va_list __args) |
832 | __THROWNL __attribute__ ((__format__ (__printf__, 2, 0))); |
833 | #endif /* Use GNU. */ |
834 | |
835 | |
836 | #ifdef __USE_POSIX199506 |
837 | /* These are defined in POSIX.1:1996. */ |
838 | |
839 | /* Acquire ownership of STREAM. */ |
840 | extern void flockfile (FILE *__stream) __THROW; |
841 | |
842 | /* Try to acquire ownership of STREAM but do not block if it is not |
843 | possible. */ |
844 | extern int ftrylockfile (FILE *__stream) __THROW __wur; |
845 | |
846 | /* Relinquish the ownership granted for STREAM. */ |
847 | extern void funlockfile (FILE *__stream) __THROW; |
848 | #endif /* POSIX */ |
849 | |
850 | #if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU |
851 | /* X/Open Issues 1-5 required getopt to be declared in this |
852 | header. It was removed in Issue 6. GNU follows Issue 6. */ |
853 | # include <bits/getopt_posix.h> |
854 | #endif |
855 | |
856 | /* Slow-path routines used by the optimized inline functions in |
857 | bits/stdio.h. */ |
858 | extern int __uflow (FILE *); |
859 | extern int __overflow (FILE *, int); |
860 | |
861 | /* If we are compiling with optimizing read this file. It contains |
862 | several optimizing inline functions and macros. */ |
863 | #ifdef __USE_EXTERN_INLINES |
864 | # include <bits/stdio.h> |
865 | #endif |
866 | #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function |
867 | # include <bits/stdio2.h> |
868 | #endif |
869 | #ifdef __LDBL_COMPAT |
870 | # include <bits/stdio-ldbl.h> |
871 | #endif |
872 | |
873 | __END_DECLS |
874 | |
875 | #endif /* <stdio.h> included. */ |
876 | |