Systemnahe Programmierung in C: stdio.h
| Systemnahe Programmierung in C: stdio.h |
|
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1/* Define ISO C stdio on top of C++ iostreams.
2 Copyright (C) 1991,1994-2004,2005,2006,2007 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20/*
21 * ISO C99 Standard: 7.19 Input/output <stdio.h>
22 */
23
24#ifndef _STDIO_H
25
26#if !defined __need_FILE && !defined __need___FILE
27# define _STDIO_H 1
28# include <features.h>
29
30__BEGIN_DECLS
31
32# define __need_size_t
33# define __need_NULL
34# include <stddef.h>
35
36# include <bits/types.h>
37# define __need_FILE
38# define __need___FILE
39#endif /* Don't need FILE. */
40
41
42#if !defined __FILE_defined && defined __need_FILE
43
44/* Define outside of namespace so the C++ is happy. */
45struct _IO_FILE;
46
47__BEGIN_NAMESPACE_STD
48/* The opaque type of streams. This is the definition used elsewhere. */
49typedef struct _IO_FILE FILE;
50__END_NAMESPACE_STD
51#if defined __USE_LARGEFILE64 || defined __USE_SVID || defined __USE_POSIX \
52 || defined __USE_BSD || defined __USE_ISOC99 || defined __USE_XOPEN \
53 || defined __USE_POSIX2
54__USING_NAMESPACE_STD(FILE)
55#endif
56
57# define __FILE_defined 1
58#endif /* FILE not defined. */
59#undef __need_FILE
60
61
62#if !defined ____FILE_defined && defined __need___FILE
63
64/* The opaque type of streams. This is the definition used elsewhere. */
65typedef struct _IO_FILE __FILE;
66
67# define ____FILE_defined 1
68#endif /* __FILE not defined. */
69#undef __need___FILE
70
71
72#ifdef _STDIO_H
73#define _STDIO_USES_IOSTREAM
74
75#include <libio.h>
76
77#ifdef __USE_XOPEN
78# ifdef __GNUC__
79# ifndef _VA_LIST_DEFINED
80typedef _G_va_list va_list;
81# define _VA_LIST_DEFINED
82# endif
83# else
84# include <stdarg.h>
85# endif
86#endif
87
88/* The type of the second argument to `fgetpos' and `fsetpos'. */
89__BEGIN_NAMESPACE_STD
90#ifndef __USE_FILE_OFFSET64
91typedef _G_fpos_t fpos_t;
92#else
93typedef _G_fpos64_t fpos_t;
94#endif
95__END_NAMESPACE_STD
96#ifdef __USE_LARGEFILE64
97typedef _G_fpos64_t fpos64_t;
98#endif
99
100/* The possibilities for the third argument to `setvbuf'. */
101#define _IOFBF 0 /* Fully buffered. */
102#define _IOLBF 1 /* Line buffered. */
103#define _IONBF 2 /* No buffering. */
104
105
106/* Default buffer size. */
107#ifndef BUFSIZ
108# define BUFSIZ _IO_BUFSIZ
109#endif
110
111
112/* End of file character.
113 Some things throughout the library rely on this being -1. */
114#ifndef EOF
115# define EOF (-1)
116#endif
117
118
119/* The possibilities for the third argument to `fseek'.
120 These values should not be changed. */
121#define SEEK_SET 0 /* Seek from beginning of file. */
122#define SEEK_CUR 1 /* Seek from current position. */
123#define SEEK_END 2 /* Seek from end of file. */
124
125
126#if defined __USE_SVID || defined __USE_XOPEN
127/* Default path prefix for `tempnam' and `tmpnam'. */
128# define P_tmpdir "/tmp"
129#endif
130
131
132/* Get the values:
133 L_tmpnam How long an array of chars must be to be passed to `tmpnam'.
134 TMP_MAX The minimum number of unique filenames generated by tmpnam
135 (and tempnam when it uses tmpnam's name space),
136 or tempnam (the two are separate).
137 L_ctermid How long an array to pass to `ctermid'.
138 L_cuserid How long an array to pass to `cuserid'.
139 FOPEN_MAX Minimum number of files that can be open at once.
140 FILENAME_MAX Maximum length of a filename. */
141#include <bits/stdio_lim.h>
142
143
144/* Standard streams. */
145extern struct _IO_FILE *stdin; /* Standard input stream. */
146extern struct _IO_FILE *stdout; /* Standard output stream. */
147extern struct _IO_FILE *stderr; /* Standard error output stream. */
148/* C89/C99 say they're macros. Make them happy. */
149#define stdin stdin
150#define stdout stdout
151#define stderr stderr
152
153__BEGIN_NAMESPACE_STD
154/* Remove file FILENAME. */
155extern int remove (__const char *__filename) __THROW;
156/* Rename file OLD to NEW. */
157extern int rename (__const char *__old, __const char *__new) __THROW;
158__END_NAMESPACE_STD
159
160#ifdef __USE_ATFILE
161/* Rename file OLD relative to OLDFD to NEW relative to NEWFD. */
162extern int renameat (int __oldfd, __const char *__old, int __newfd,
163 __const char *__new) __THROW;
164#endif
165
166__BEGIN_NAMESPACE_STD
167/* Create a temporary file and open it read/write.
168
169 This function is a possible cancellation points and therefore not
170 marked with __THROW. */
171#ifndef __USE_FILE_OFFSET64
172extern FILE *tmpfile (void) __wur;
173#else
174# ifdef __REDIRECT
175extern FILE *__REDIRECT (tmpfile, (void), tmpfile64) __wur;
176# else
177# define tmpfile tmpfile64
178# endif
179#endif
180
181#ifdef __USE_LARGEFILE64
182extern FILE *tmpfile64 (void) __wur;
183#endif
184
185/* Generate a temporary filename. */
186extern char *tmpnam (char *__s) __THROW __wur;
187__END_NAMESPACE_STD
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. */
192extern char *tmpnam_r (char *__s) __THROW __wur;
193#endif
194
195
196#if defined __USE_SVID || 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'. */
204extern char *tempnam (__const char *__dir, __const char *__pfx)
205 __THROW __attribute_malloc__ __wur;
206#endif
207
208
209__BEGIN_NAMESPACE_STD
210/* Close STREAM.
211
212 This function is a possible cancellation point and therefore not
213 marked with __THROW. */
214extern int fclose (FILE *__stream);
215/* Flush STREAM, or all streams if STREAM is NULL.
216
217 This function is a possible cancellation point and therefore not
218 marked with __THROW. */
219extern int fflush (FILE *__stream);
220__END_NAMESPACE_STD
221
222#ifdef __USE_MISC
223/* Faster versions when locking is not required.
224
225 This function is not part of POSIX and therefore no official
226 cancellation point. But due to similarity with an POSIX interface
227 or due to the implementation it is a cancellation point and
228 therefore not marked with __THROW. */
229extern int fflush_unlocked (FILE *__stream);
230#endif
231
232#ifdef __USE_GNU
233/* Close all streams.
234
235 This function is not part of POSIX and therefore no official
236 cancellation point. But due to similarity with an POSIX interface
237 or due to the implementation it is a cancellation point and
238 therefore not marked with __THROW. */
239extern int fcloseall (void);
240#endif
241
242
243__BEGIN_NAMESPACE_STD
244#ifndef __USE_FILE_OFFSET64
245/* Open a file and create a new stream for it.
246
247 This function is a possible cancellation point and therefore not
248 marked with __THROW. */
249extern FILE *fopen (__const char *__restrict __filename,
250 __const char *__restrict __modes) __wur;
251/* Open a file, replacing an existing stream with it.
252
253 This function is a possible cancellation point and therefore not
254 marked with __THROW. */
255extern FILE *freopen (__const char *__restrict __filename,
256 __const char *__restrict __modes,
257 FILE *__restrict __stream) __wur;
258#else
259# ifdef __REDIRECT
260extern FILE *__REDIRECT (fopen, (__const char *__restrict __filename,
261 __const char *__restrict __modes), fopen64)
262 __wur;
263extern FILE *__REDIRECT (freopen, (__const char *__restrict __filename,
264 __const char *__restrict __modes,
265 FILE *__restrict __stream), freopen64)
266 __wur;
267# else
268# define fopen fopen64
269# define freopen freopen64
270# endif
271#endif
272__END_NAMESPACE_STD
273#ifdef __USE_LARGEFILE64
274extern FILE *fopen64 (__const char *__restrict __filename,
275 __const char *__restrict __modes) __wur;
276extern FILE *freopen64 (__const char *__restrict __filename,
277 __const char *__restrict __modes,
278 FILE *__restrict __stream) __wur;
279#endif
280
281#ifdef __USE_POSIX
282/* Create a new stream that refers to an existing system file descriptor. */
283extern FILE *fdopen (int __fd, __const char *__modes) __THROW __wur;
284#endif
285
286#ifdef __USE_GNU
287/* Create a new stream that refers to the given magic cookie,
288 and uses the given functions for input and output. */
289extern FILE *fopencookie (void *__restrict __magic_cookie,
290 __const char *__restrict __modes,
291 _IO_cookie_io_functions_t __io_funcs) __THROW __wur;
292
293/* Create a new stream that refers to a memory buffer. */
294extern FILE *fmemopen (void *__s, size_t __len, __const char *__modes)
295 __THROW __wur;
296
297/* Open a stream that writes into a malloc'd buffer that is expanded as
298 necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
299 and the number of characters written on fflush or fclose. */
300extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) __THROW __wur;
301#endif
302
303
304__BEGIN_NAMESPACE_STD
305/* If BUF is NULL, make STREAM unbuffered.
306 Else make it use buffer BUF, of size BUFSIZ. */
307extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
308/* Make STREAM use buffering mode MODE.
309 If BUF is not NULL, use N bytes of it for buffering;
310 else allocate an internal buffer N bytes long. */
311extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
312 int __modes, size_t __n) __THROW;
313__END_NAMESPACE_STD
314
315#ifdef __USE_BSD
316/* If BUF is NULL, make STREAM unbuffered.
317 Else make it use SIZE bytes of BUF for buffering. */
318extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
319 size_t __size) __THROW;
320
321/* Make STREAM line-buffered. */
322extern void setlinebuf (FILE *__stream) __THROW;
323#endif
324
325
326__BEGIN_NAMESPACE_STD
327/* Write formatted output to STREAM.
328
329 This function is a possible cancellation point and therefore not
330 marked with __THROW. */
331extern int fprintf (FILE *__restrict __stream,
332 __const char *__restrict __format, ...);
333/* Write formatted output to stdout.
334
335 This function is a possible cancellation point and therefore not
336 marked with __THROW. */
337extern int printf (__const char *__restrict __format, ...);
338/* Write formatted output to S. */
339extern int sprintf (char *__restrict __s,
340 __const char *__restrict __format, ...) __THROW;
341
342/* Write formatted output to S from argument list ARG.
343
344 This function is a possible cancellation point and therefore not
345 marked with __THROW. */
346extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format,
347 _G_va_list __arg);
348/* Write formatted output to stdout from argument list ARG.
349
350 This function is a possible cancellation point and therefore not
351 marked with __THROW. */
352extern int vprintf (__const char *__restrict __format, _G_va_list __arg);
353/* Write formatted output to S from argument list ARG. */
354extern int vsprintf (char *__restrict __s, __const char *__restrict __format,
355 _G_va_list __arg) __THROW;
356__END_NAMESPACE_STD
357
358#if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98
359__BEGIN_NAMESPACE_C99
360/* Maximum chars of output to write in MAXLEN. */
361extern int snprintf (char *__restrict __s, size_t __maxlen,
362 __const char *__restrict __format, ...)
363 __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
364
365extern int vsnprintf (char *__restrict __s, size_t __maxlen,
366 __const char *__restrict __format, _G_va_list __arg)
367 __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
368__END_NAMESPACE_C99
369#endif
370
371#ifdef __USE_GNU
372/* Write formatted output to a string dynamically allocated with `malloc'.
373 Store the address of the string in *PTR. */
374extern int vasprintf (char **__restrict __ptr, __const char *__restrict __f,
375 _G_va_list __arg)
376 __THROW __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
377extern int __asprintf (char **__restrict __ptr,
378 __const char *__restrict __fmt, ...)
379 __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
380extern int asprintf (char **__restrict __ptr,
381 __const char *__restrict __fmt, ...)
382 __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
383
384/* Write formatted output to a file descriptor.
385
386 These functions are not part of POSIX and therefore no official
387 cancellation point. But due to similarity with an POSIX interface
388 or due to the implementation they are cancellation points and
389 therefore not marked with __THROW. */
390extern int vdprintf (int __fd, __const char *__restrict __fmt,
391 _G_va_list __arg)
392 __attribute__ ((__format__ (__printf__, 2, 0)));
393extern int dprintf (int __fd, __const char *__restrict __fmt, ...)
394 __attribute__ ((__format__ (__printf__, 2, 3)));
395#endif
396
397
398__BEGIN_NAMESPACE_STD
399/* Read formatted input from STREAM.
400
401 This function is a possible cancellation point and therefore not
402 marked with __THROW. */
403extern int fscanf (FILE *__restrict __stream,
404 __const char *__restrict __format, ...) __wur;
405/* Read formatted input from stdin.
406
407 This function is a possible cancellation point and therefore not
408 marked with __THROW. */
409extern int scanf (__const char *__restrict __format, ...) __wur;
410/* Read formatted input from S. */
411extern int sscanf (__const char *__restrict __s,
412 __const char *__restrict __format, ...) __THROW;
413
414#if defined __USE_ISOC99 && !defined __USE_GNU \
415 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
416 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
417# ifdef __REDIRECT
418/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
419 GNU extension which conflicts with valid %a followed by letter
420 s, S or [. */
421extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
422 __const char *__restrict __format, ...),
423 __isoc99_fscanf) __wur;
424extern int __REDIRECT (scanf, (__const char *__restrict __format, ...),
425 __isoc99_scanf) __wur;
426extern int __REDIRECT (sscanf, (__const char *__restrict __s,
427 __const char *__restrict __format, ...),
428 __isoc99_sscanf) __THROW;
429# else
430extern int __isoc99_fscanf (FILE *__restrict __stream,
431 __const char *__restrict __format, ...) __wur;
432extern int __isoc99_scanf (__const char *__restrict __format, ...) __wur;
433extern int __isoc99_sscanf (__const char *__restrict __s,
434 __const char *__restrict __format, ...) __THROW;
435# define fscanf __isoc99_fscanf
436# define scanf __isoc99_scanf
437# define sscanf __isoc99_sscanf
438# endif
439#endif
440
441__END_NAMESPACE_STD
442
443#ifdef __USE_ISOC99
444__BEGIN_NAMESPACE_C99
445/* Read formatted input from S into argument list ARG.
446
447 This function is a possible cancellation point and therefore not
448 marked with __THROW. */
449extern int vfscanf (FILE *__restrict __s, __const char *__restrict __format,
450 _G_va_list __arg)
451 __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
452
453/* Read formatted input from stdin into argument list ARG.
454
455 This function is a possible cancellation point and therefore not
456 marked with __THROW. */
457extern int vscanf (__const char *__restrict __format, _G_va_list __arg)
458 __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
459
460/* Read formatted input from S into argument list ARG. */
461extern int vsscanf (__const char *__restrict __s,
462 __const char *__restrict __format, _G_va_list __arg)
463 __THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
464
465# if !defined __USE_GNU \
466 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
467 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
468# ifdef __REDIRECT
469/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
470 GNU extension which conflicts with valid %a followed by letter
471 s, S or [. */
472extern int __REDIRECT (vfscanf,
473 (FILE *__restrict __s,
474 __const char *__restrict __format, _G_va_list __arg),
475 __isoc99_vfscanf)
476 __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
477extern int __REDIRECT (vscanf, (__const char *__restrict __format,
478 _G_va_list __arg), __isoc99_vfscanf)
479 __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
480extern int __REDIRECT (vsscanf,
481 (__const char *__restrict __s,
482 __const char *__restrict __format, _G_va_list __arg),
483 __isoc99_vsscanf)
484 __THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
485# else
486extern int __isoc99_vfscanf (FILE *__restrict __s,
487 __const char *__restrict __format,
488 _G_va_list __arg) __wur;
489extern int __isoc99_vscanf (__const char *__restrict __format,
490 _G_va_list __arg) __wur;
491extern int __isoc99_vsscanf (__const char *__restrict __s,
492 __const char *__restrict __format,
493 _G_va_list __arg) __THROW;
494# define vfscanf __isoc99_vfscanf
495# define vscanf __isoc99_vscanf
496# define vsscanf __isoc99_vsscanf
497# endif
498# endif
499
500__END_NAMESPACE_C99
501#endif /* Use ISO C9x. */
502
503
504__BEGIN_NAMESPACE_STD
505/* Read a character from STREAM.
506
507 These functions are possible cancellation points and therefore not
508 marked with __THROW. */
509extern int fgetc (FILE *__stream);
510extern int getc (FILE *__stream);
511
512/* Read a character from stdin.
513
514 This function is a possible cancellation point and therefore not
515 marked with __THROW. */
516extern int getchar (void);
517__END_NAMESPACE_STD
518
519/* The C standard explicitly says this is a macro, so we always do the
520 optimization for it. */
521#define getc(_fp) _IO_getc (_fp)
522
523#if defined __USE_POSIX || defined __USE_MISC
524/* These are defined in POSIX.1:1996.
525
526 These functions are possible cancellation points and therefore not
527 marked with __THROW. */
528extern int getc_unlocked (FILE *__stream);
529extern int getchar_unlocked (void);
530#endif /* Use POSIX or MISC. */
531
532#ifdef __USE_MISC
533/* Faster version when locking is not necessary.
534
535 This function is not part of POSIX and therefore no official
536 cancellation point. But due to similarity with an POSIX interface
537 or due to the implementation it is a cancellation point and
538 therefore not marked with __THROW. */
539extern int fgetc_unlocked (FILE *__stream);
540#endif /* Use MISC. */
541
542
543__BEGIN_NAMESPACE_STD
544/* Write a character to STREAM.
545
546 These functions are possible cancellation points and therefore not
547 marked with __THROW.
548
549 These functions is a possible cancellation point and therefore not
550 marked with __THROW. */
551extern int fputc (int __c, FILE *__stream);
552extern int putc (int __c, FILE *__stream);
553
554/* Write a character to stdout.
555
556 This function is a possible cancellation point and therefore not
557 marked with __THROW. */
558extern int putchar (int __c);
559__END_NAMESPACE_STD
560
561/* The C standard explicitly says this can be a macro,
562 so we always do the optimization for it. */
563#define putc(_ch, _fp) _IO_putc (_ch, _fp)
564
565#ifdef __USE_MISC
566/* Faster version when locking is not necessary.
567
568 This function is not part of POSIX and therefore no official
569 cancellation point. But due to similarity with an POSIX interface
570 or due to the implementation it is a cancellation point and
571 therefore not marked with __THROW. */
572extern int fputc_unlocked (int __c, FILE *__stream);
573#endif /* Use MISC. */
574
575#if defined __USE_POSIX || defined __USE_MISC
576/* These are defined in POSIX.1:1996.
577
578 These functions are possible cancellation points and therefore not
579 marked with __THROW. */
580extern int putc_unlocked (int __c, FILE *__stream);
581extern int putchar_unlocked (int __c);
582#endif /* Use POSIX or MISC. */
583
584
585#if defined __USE_SVID || defined __USE_MISC \
586 || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
587/* Get a word (int) from STREAM. */
588extern int getw (FILE *__stream);
589
590/* Write a word (int) to STREAM. */
591extern int putw (int __w, FILE *__stream);
592#endif
593
594
595__BEGIN_NAMESPACE_STD
596/* Get a newline-terminated string of finite length from STREAM.
597
598 This function is a possible cancellation point and therefore not
599 marked with __THROW. */
600extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
601 __wur;
602
603/* Get a newline-terminated string from stdin, removing the newline.
604 DO NOT USE THIS FUNCTION!! There is no limit on how much it will read.
605
606 This function is a possible cancellation point and therefore not
607 marked with __THROW. */
608extern char *gets (char *__s) __wur;
609__END_NAMESPACE_STD
610
611#ifdef __USE_GNU
612/* This function does the same as `fgets' but does not lock the stream.
613
614 This function is not part of POSIX and therefore no official
615 cancellation point. But due to similarity with an POSIX interface
616 or due to the implementation it is a cancellation point and
617 therefore not marked with __THROW. */
618extern char *fgets_unlocked (char *__restrict __s, int __n,
619 FILE *__restrict __stream) __wur;
620#endif
621
622
623#ifdef __USE_GNU
624/* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
625 (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
626 NULL), pointing to *N characters of space. It is realloc'd as
627 necessary. Returns the number of characters read (not including the
628 null terminator), or -1 on error or EOF.
629
630 These functions are not part of POSIX and therefore no official
631 cancellation point. But due to similarity with an POSIX interface
632 or due to the implementation they are cancellation points and
633 therefore not marked with __THROW. */
634extern _IO_ssize_t __getdelim (char **__restrict __lineptr,
635 size_t *__restrict __n, int __delimiter,
636 FILE *__restrict __stream) __wur;
637extern _IO_ssize_t getdelim (char **__restrict __lineptr,
638 size_t *__restrict __n, int __delimiter,
639 FILE *__restrict __stream) __wur;
640
641/* Like `getdelim', but reads up to a newline.
642
643 This function is not part of POSIX and therefore no official
644 cancellation point. But due to similarity with an POSIX interface
645 or due to the implementation it is a cancellation point and
646 therefore not marked with __THROW. */
647extern _IO_ssize_t getline (char **__restrict __lineptr,
648 size_t *__restrict __n,
649 FILE *__restrict __stream) __wur;
650#endif
651
652
653__BEGIN_NAMESPACE_STD
654/* Write a string to STREAM.
655
656 This function is a possible cancellation points and therefore not
657 marked with __THROW. */
658extern int fputs (__const char *__restrict __s, FILE *__restrict __stream);
659
660/* Write a string, followed by a newline, to stdout.
661
662 This function is a possible cancellation points and therefore not
663 marked with __THROW. */
664extern int puts (__const char *__s);
665
666
667/* Push a character back onto the input buffer of STREAM.
668
669 This function is a possible cancellation points and therefore not
670 marked with __THROW. */
671extern int ungetc (int __c, FILE *__stream);
672
673
674/* Read chunks of generic data from STREAM.
675
676 This function is a possible cancellation points and therefore not
677 marked with __THROW. */
678extern size_t fread (void *__restrict __ptr, size_t __size,
679 size_t __n, FILE *__restrict __stream) __wur;
680/* Write chunks of generic data to STREAM.
681
682 This function is a possible cancellation points and therefore not
683 marked with __THROW. */
684extern size_t fwrite (__const void *__restrict __ptr, size_t __size,
685 size_t __n, FILE *__restrict __s) __wur;
686__END_NAMESPACE_STD
687
688#ifdef __USE_GNU
689/* This function does the same as `fputs' but does not lock the stream.
690
691 This function is not part of POSIX and therefore no official
692 cancellation point. But due to similarity with an POSIX interface
693 or due to the implementation it is a cancellation point and
694 therefore not marked with __THROW. */
695extern int fputs_unlocked (__const char *__restrict __s,
696 FILE *__restrict __stream);
697#endif
698
699#ifdef __USE_MISC
700/* Faster versions when locking is not necessary.
701
702 These functions are not part of POSIX and therefore no official
703 cancellation point. But due to similarity with an POSIX interface
704 or due to the implementation they are cancellation points and
705 therefore not marked with __THROW. */
706extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
707 size_t __n, FILE *__restrict __stream) __wur;
708extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size,
709 size_t __n, FILE *__restrict __stream) __wur;
710#endif
711
712
713__BEGIN_NAMESPACE_STD
714/* Seek to a certain position on STREAM.
715
716 This function is a possible cancellation point and therefore not
717 marked with __THROW. */
718extern int fseek (FILE *__stream, long int __off, int __whence);
719/* Return the current position of STREAM.
720
721 This function is a possible cancellation point and therefore not
722 marked with __THROW. */
723extern long int ftell (FILE *__stream) __wur;
724/* Rewind to the beginning of STREAM.
725
726 This function is a possible cancellation point and therefore not
727 marked with __THROW. */
728extern void rewind (FILE *__stream);
729__END_NAMESPACE_STD
730
731/* The Single Unix Specification, Version 2, specifies an alternative,
732 more adequate interface for the two functions above which deal with
733 file offset. `long int' is not the right type. These definitions
734 are originally defined in the Large File Support API. */
735
736#if defined __USE_LARGEFILE || defined __USE_XOPEN2K
737# ifndef __USE_FILE_OFFSET64
738/* Seek to a certain position on STREAM.
739
740 This function is a possible cancellation point and therefore not
741 marked with __THROW. */
742extern int fseeko (FILE *__stream, __off_t __off, int __whence);
743/* Return the current position of STREAM.
744
745 This function is a possible cancellation point and therefore not
746 marked with __THROW. */
747extern __off_t ftello (FILE *__stream) __wur;
748# else
749# ifdef __REDIRECT
750extern int __REDIRECT (fseeko,
751 (FILE *__stream, __off64_t __off, int __whence),
752 fseeko64);
753extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
754# else
755# define fseeko fseeko64
756# define ftello ftello64
757# endif
758# endif
759#endif
760
761__BEGIN_NAMESPACE_STD
762#ifndef __USE_FILE_OFFSET64
763/* Get STREAM's position.
764
765 This function is a possible cancellation point and therefore not
766 marked with __THROW. */
767extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
768/* Set STREAM's position.
769
770 This function is a possible cancellation point and therefore not
771 marked with __THROW. */
772extern int fsetpos (FILE *__stream, __const fpos_t *__pos);
773#else
774# ifdef __REDIRECT
775extern int __REDIRECT (fgetpos, (FILE *__restrict __stream,
776 fpos_t *__restrict __pos), fgetpos64);
777extern int __REDIRECT (fsetpos,
778 (FILE *__stream, __const fpos_t *__pos), fsetpos64);
779# else
780# define fgetpos fgetpos64
781# define fsetpos fsetpos64
782# endif
783#endif
784__END_NAMESPACE_STD
785
786#ifdef __USE_LARGEFILE64
787extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
788extern __off64_t ftello64 (FILE *__stream) __wur;
789extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
790extern int fsetpos64 (FILE *__stream, __const fpos64_t *__pos);
791#endif
792
793__BEGIN_NAMESPACE_STD
794/* Clear the error and EOF indicators for STREAM. */
795extern void clearerr (FILE *__stream) __THROW;
796/* Return the EOF indicator for STREAM. */
797extern int feof (FILE *__stream) __THROW __wur;
798/* Return the error indicator for STREAM. */
799extern int ferror (FILE *__stream) __THROW __wur;
800__END_NAMESPACE_STD
801
802#ifdef __USE_MISC
803/* Faster versions when locking is not required. */
804extern void clearerr_unlocked (FILE *__stream) __THROW;
805extern int feof_unlocked (FILE *__stream) __THROW __wur;
806extern int ferror_unlocked (FILE *__stream) __THROW __wur;
807#endif
808
809
810__BEGIN_NAMESPACE_STD
811/* Print a message describing the meaning of the value of errno.
812
813 This function is a possible cancellation point and therefore not
814 marked with __THROW. */
815extern void perror (__const char *__s);
816__END_NAMESPACE_STD
817
818/* Provide the declarations for `sys_errlist' and `sys_nerr' if they
819 are available on this system. Even if available, these variables
820 should not be used directly. The `strerror' function provides
821 all the necessary functionality. */
822#include <bits/sys_errlist.h>
823
824
825#ifdef __USE_POSIX
826/* Return the system file descriptor for STREAM. */
827extern int fileno (FILE *__stream) __THROW __wur;
828#endif /* Use POSIX. */
829
830#ifdef __USE_MISC
831/* Faster version when locking is not required. */
832extern int fileno_unlocked (FILE *__stream) __THROW __wur;
833#endif
834
835
836#if (defined __USE_POSIX2 || defined __USE_SVID || defined __USE_BSD || \
837 defined __USE_MISC)
838/* Create a new stream connected to a pipe running the given command.
839
840 This function is a possible cancellation point and therefore not
841 marked with __THROW. */
842extern FILE *popen (__const char *__command, __const char *__modes) __wur;
843
844/* Close a stream opened by popen and return the status of its child.
845
846 This function is a possible cancellation point and therefore not
847 marked with __THROW. */
848extern int pclose (FILE *__stream);
849#endif
850
851
852#ifdef __USE_POSIX
853/* Return the name of the controlling terminal. */
854extern char *ctermid (char *__s) __THROW;
855#endif /* Use POSIX. */
856
857
858#ifdef __USE_XOPEN
859/* Return the name of the current user. */
860extern char *cuserid (char *__s);
861#endif /* Use X/Open, but not issue 6. */
862
863
864#ifdef __USE_GNU
865struct obstack; /* See <obstack.h>. */
866
867/* Write formatted output to an obstack. */
868extern int obstack_printf (struct obstack *__restrict __obstack,
869 __const char *__restrict __format, ...)
870 __THROW __attribute__ ((__format__ (__printf__, 2, 3)));
871extern int obstack_vprintf (struct obstack *__restrict __obstack,
872 __const char *__restrict __format,
873 _G_va_list __args)
874 __THROW __attribute__ ((__format__ (__printf__, 2, 0)));
875#endif /* Use GNU. */
876
877
878#if defined __USE_POSIX || defined __USE_MISC
879/* These are defined in POSIX.1:1996. */
880
881/* Acquire ownership of STREAM. */
882extern void flockfile (FILE *__stream) __THROW;
883
884/* Try to acquire ownership of STREAM but do not block if it is not
885 possible. */
886extern int ftrylockfile (FILE *__stream) __THROW __wur;
887
888/* Relinquish the ownership granted for STREAM. */
889extern void funlockfile (FILE *__stream) __THROW;
890#endif /* POSIX || misc */
891
892#if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
893/* The X/Open standard requires some functions and variables to be
894 declared here which do not belong into this header. But we have to
895 follow. In GNU mode we don't do this nonsense. */
896# define __need_getopt
897# include <getopt.h>
898#endif /* X/Open, but not issue 6 and not for GNU. */
899
900/* If we are compiling with optimizing read this file. It contains
901 several optimizing inline functions and macros. */
902#ifdef __USE_EXTERN_INLINES
903# include <bits/stdio.h>
904#endif
905#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
906# include <bits/stdio2.h>
907#endif
908#ifdef __LDBL_COMPAT
909# include <bits/stdio-ldbl.h>
910#endif
911
912__END_DECLS
913
914#endif /* <stdio.h> included. */
915
916#endif /* !_STDIO_H */
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| Letzte Änderung: 06.05.2002 | © Prof. Dr. Uwe Schmidt |
