blob: 289b861a55cc29f4d062e1e5ddad63ffb49693f0 [file] [log] [blame]
lh9ed821d2023-04-07 01:36:19 -07001/*
2 Copyright (C) 1991,1994-2002,2003,2004 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__BEGIN_NAMESPACE_STD
45/* The opaque type of streams. This is the definition used elsewhere. */
46typedef struct __STDIO_FILE_STRUCT FILE;
47__END_NAMESPACE_STD
48#if defined __USE_LARGEFILE64 || defined __USE_SVID || defined __USE_POSIX \
49 || defined __USE_BSD || defined __USE_ISOC99 || defined __USE_XOPEN \
50 || defined __USE_POSIX2
51__USING_NAMESPACE_STD(FILE)
52#endif
53
54# define __FILE_defined 1
55#endif /* FILE not defined. */
56#undef __need_FILE
57
58
59#if !defined ____FILE_defined && defined __need___FILE
60
61/* The opaque type of streams. This is the definition used elsewhere. */
62typedef struct __STDIO_FILE_STRUCT __FILE;
63
64# define ____FILE_defined 1
65#endif /* __FILE not defined. */
66#undef __need___FILE
67
68
69#ifdef _STDIO_H
70#undef _STDIO_USES_IOSTREAM
71
72#include <bits/uClibc_stdio.h>
73
74/* This define avoids name pollution if we're using GNU stdarg.h */
75# define __need___va_list
76#include <stdarg.h>
77
78/* The type of the second argument to `fgetpos' and `fsetpos'. */
79__BEGIN_NAMESPACE_STD
80#ifndef __USE_FILE_OFFSET64
81typedef __STDIO_fpos_t fpos_t;
82#else
83typedef __STDIO_fpos64_t fpos_t;
84#endif
85__END_NAMESPACE_STD
86#ifdef __USE_LARGEFILE64
87typedef __STDIO_fpos64_t fpos64_t;
88#endif
89
90/* The possibilities for the third argument to `setvbuf'. */
91#define _IOFBF __STDIO_IOFBF /* Fully buffered. */
92#define _IOLBF __STDIO_IOLBF /* Line buffered. */
93#define _IONBF __STDIO_IONBF /* No buffering. */
94
95
96/* Default buffer size. */
97#ifndef BUFSIZ
98# define BUFSIZ __STDIO_BUFSIZ
99#endif
100
101
102/* End of file character.
103 Some things throughout the library rely on this being -1. */
104#ifndef EOF
105# define EOF (-1)
106#endif
107
108
109/* The possibilities for the third argument to `fseek'.
110 These values should not be changed. */
111#define SEEK_SET 0 /* Seek from beginning of file. */
112#define SEEK_CUR 1 /* Seek from current position. */
113#define SEEK_END 2 /* Seek from end of file. */
114
115
116#if defined __USE_SVID || defined __USE_XOPEN
117/* Default path prefix for `mkstemp'. */
118# define P_tmpdir "/tmp"
119#endif
120
121
122/* Get the values:
123 L_tmpnam How long an array of chars must be to be passed to `tmpnam'.
124 TMP_MAX The minimum number of unique filenames generated by tmpnam
125 (and tempnam when it uses tmpnam's name space),
126 or tempnam (the two are separate).
127 L_ctermid How long an array to pass to `ctermid'.
128 L_cuserid How long an array to pass to `cuserid'.
129 FOPEN_MAX Minimum number of files that can be open at once.
130 FILENAME_MAX Maximum length of a filename. */
131#include <bits/stdio_lim.h>
132
133
134/* Standard streams. */
135extern FILE *stdin; /* Standard input stream. */
136extern FILE *stdout; /* Standard output stream. */
137extern FILE *stderr; /* Standard error output stream. */
138/* C89/C99 say they're macros. Make them happy. */
139#define stdin stdin
140#define stdout stdout
141#define stderr stderr
142
143__BEGIN_NAMESPACE_STD
144/* Remove file FILENAME. */
145extern int remove (__const char *__filename) __THROW;
146libc_hidden_proto(remove)
147/* Rename file OLD to NEW. */
148extern int rename (__const char *__old, __const char *__new) __THROW;
149__END_NAMESPACE_STD
150
151#ifdef __USE_ATFILE
152/* Rename file OLD relative to OLDFD to NEW relative to NEWFD. */
153extern int renameat (int __oldfd, __const char *__old, int __newfd,
154 __const char *__new) __THROW;
155#endif
156
157__BEGIN_NAMESPACE_STD
158/* Create a temporary file and open it read/write.
159
160 This function is a possible cancellation points and therefore not
161 marked with __THROW. */
162#ifndef __USE_FILE_OFFSET64
163extern FILE *tmpfile (void) __wur;
164#else
165# ifdef __REDIRECT
166extern FILE *__REDIRECT (tmpfile, (void), tmpfile64) __wur;
167# else
168# define tmpfile tmpfile64
169# endif
170#endif
171
172#ifdef __USE_LARGEFILE64
173extern FILE *tmpfile64 (void) __wur;
174#endif
175
176#ifdef __UCLIBC_SUSV4_LEGACY__
177/* Generate a temporary filename. */
178extern char *tmpnam (char *__s) __THROW __wur;
179#endif
180__END_NAMESPACE_STD
181
182#if defined __USE_MISC && defined __UCLIBC_SUSV4_LEGACY__
183/* This is the reentrant variant of `tmpnam'. The only difference is
184 that it does not allow S to be NULL. */
185extern char *tmpnam_r (char *__s) __THROW __wur;
186#endif
187
188
189#if (defined __USE_SVID || defined __USE_XOPEN) && defined __UCLIBC_SUSV4_LEGACY__
190/* Generate a unique temporary filename using up to five characters of PFX
191 if it is not NULL. The directory to put this file in is searched for
192 as follows: First the environment variable "TMPDIR" is checked.
193 If it contains the name of a writable directory, that directory is used.
194 If not and if DIR is not NULL, that value is checked. If that fails,
195 P_tmpdir is tried and finally "/tmp". The storage for the filename
196 is allocated by `malloc'. */
197extern char *tempnam (__const char *__dir, __const char *__pfx)
198 __THROW __attribute_malloc__ __wur;
199#endif
200
201
202__BEGIN_NAMESPACE_STD
203/* Close STREAM.
204
205 This function is a possible cancellation point and therefore not
206 marked with __THROW. */
207extern int fclose (FILE *__stream);
208libc_hidden_proto(fclose)
209/* Flush STREAM, or all streams if STREAM is NULL.
210
211 This function is a possible cancellation point and therefore not
212 marked with __THROW. */
213extern int fflush (FILE *__stream);
214libc_hidden_proto(fflush)
215__END_NAMESPACE_STD
216
217#ifdef __USE_MISC
218/* Faster versions when locking is not required.
219
220 This function is not part of POSIX and therefore no official
221 cancellation point. But due to similarity with an POSIX interface
222 or due to the implementation it is a cancellation point and
223 therefore not marked with __THROW. */
224extern int fflush_unlocked (FILE *__stream);
225libc_hidden_proto(fflush_unlocked)
226#endif
227
228#ifdef __USE_GNU
229/* Close all streams.
230
231 This function is not part of POSIX and therefore no official
232 cancellation point. But due to similarity with an POSIX interface
233 or due to the implementation it is a cancellation point and
234 therefore not marked with __THROW. */
235extern int fcloseall (void);
236#endif
237
238
239__BEGIN_NAMESPACE_STD
240#ifndef __USE_FILE_OFFSET64
241/* Open a file and create a new stream for it.
242
243 This function is a possible cancellation point and therefore not
244 marked with __THROW. */
245extern FILE *fopen (__const char *__restrict __filename,
246 __const char *__restrict __modes) __wur;
247libc_hidden_proto(fopen)
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. */
252extern FILE *freopen (__const char *__restrict __filename,
253 __const char *__restrict __modes,
254 FILE *__restrict __stream) __wur;
255#else
256# ifdef __REDIRECT
257extern FILE *__REDIRECT (fopen, (__const char *__restrict __filename,
258 __const char *__restrict __modes), fopen64)
259 __wur;
260extern 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__END_NAMESPACE_STD
270#ifdef __USE_LARGEFILE64
271extern FILE *fopen64 (__const char *__restrict __filename,
272 __const char *__restrict __modes) __wur;
273libc_hidden_proto(fopen64)
274extern FILE *freopen64 (__const char *__restrict __filename,
275 __const char *__restrict __modes,
276 FILE *__restrict __stream) __wur;
277#endif
278
279#ifdef __USE_POSIX
280/* Create a new stream that refers to an existing system file descriptor. */
281extern FILE *fdopen (int __fd, __const char *__modes) __THROW __wur;
282libc_hidden_proto(fdopen)
283#endif
284
285#ifdef __USE_GNU
286#ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
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;
292libc_hidden_proto(fopencookie)
293
294/* Create a new stream that refers to a memory buffer. */
295extern FILE *fmemopen (void *__s, size_t __len, __const char *__modes)
296 __THROW __wur;
297
298/* Open a stream that writes into a malloc'd buffer that is expanded as
299 necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
300 and the number of characters written on fflush or fclose. */
301extern FILE *open_memstream (char **__restrict __bufloc,
302 size_t *__restrict __sizeloc) __THROW __wur;
303libc_hidden_proto(open_memstream)
304#endif
305#endif
306
307
308__BEGIN_NAMESPACE_STD
309/* If BUF is NULL, make STREAM unbuffered.
310 Else make it use buffer BUF, of size BUFSIZ. */
311extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
312/* Make STREAM use buffering mode MODE.
313 If BUF is not NULL, use N bytes of it for buffering;
314 else allocate an internal buffer N bytes long. */
315extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
316 int __modes, size_t __n) __THROW;
317libc_hidden_proto(setvbuf)
318__END_NAMESPACE_STD
319
320#ifdef __USE_BSD
321/* If BUF is NULL, make STREAM unbuffered.
322 Else make it use SIZE bytes of BUF for buffering. */
323extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
324 size_t __size) __THROW;
325
326/* Make STREAM line-buffered. */
327extern void setlinebuf (FILE *__stream) __THROW;
328#endif
329
330
331__BEGIN_NAMESPACE_STD
332/* Write formatted output to STREAM.
333
334 This function is a possible cancellation point and therefore not
335 marked with __THROW. */
336extern int fprintf (FILE *__restrict __stream,
337 __const char *__restrict __format, ...);
338libc_hidden_proto(fprintf)
339/* Write formatted output to stdout.
340
341 This function is a possible cancellation point and therefore not
342 marked with __THROW. */
343extern int printf (__const char *__restrict __format, ...);
344libc_hidden_proto(printf)
345/* Write formatted output to S. */
346extern int sprintf (char *__restrict __s,
347 __const char *__restrict __format, ...)
348 __THROW __attribute__ ((__format__ (__printf__, 2, 3)));
349libc_hidden_proto(sprintf)
350
351/* Write formatted output to S from argument list ARG.
352
353 This function is a possible cancellation point and therefore not
354 marked with __THROW. */
355extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format,
356 __gnuc_va_list __arg);
357libc_hidden_proto(vfprintf)
358/* Write formatted output to stdout from argument list ARG.
359
360 This function is a possible cancellation point and therefore not
361 marked with __THROW. */
362extern int vprintf (__const char *__restrict __format, __gnuc_va_list __arg);
363/* Write formatted output to S from argument list ARG. */
364extern int vsprintf (char *__restrict __s, __const char *__restrict __format,
365 __gnuc_va_list __arg)
366 __THROW __attribute__ ((__format__ (__printf__, 2, 0)));
367__END_NAMESPACE_STD
368
369#if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98
370__BEGIN_NAMESPACE_C99
371/* Maximum chars of output to write in MAXLEN. */
372extern int snprintf (char *__restrict __s, size_t __maxlen,
373 __const char *__restrict __format, ...)
374 __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
375libc_hidden_proto(snprintf)
376
377extern int vsnprintf (char *__restrict __s, size_t __maxlen,
378 __const char *__restrict __format, __gnuc_va_list __arg)
379 __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
380libc_hidden_proto(vsnprintf)
381__END_NAMESPACE_C99
382#endif
383
384#ifdef __USE_GNU
385/* Write formatted output to a string dynamically allocated with `malloc'.
386 Store the address of the string in *PTR. */
387extern int vasprintf (char **__restrict __ptr, __const char *__restrict __f,
388 __gnuc_va_list __arg)
389 __THROW __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
390libc_hidden_proto(vasprintf)
391#if 0 /* uClibc: disabled */
392extern int __asprintf (char **__restrict __ptr,
393 __const char *__restrict __fmt, ...)
394 __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
395#endif
396extern int asprintf (char **__restrict __ptr,
397 __const char *__restrict __fmt, ...)
398 __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
399libc_hidden_proto(asprintf)
400
401/* Write formatted output to a file descriptor.
402
403 These functions are not part of POSIX and therefore no official
404 cancellation point. But due to similarity with an POSIX interface
405 or due to the implementation they are cancellation points and
406 therefore not marked with __THROW. */
407extern int vdprintf (int __fd, __const char *__restrict __fmt,
408 __gnuc_va_list __arg)
409 __attribute__ ((__format__ (__printf__, 2, 0)));
410libc_hidden_proto(vdprintf)
411extern int dprintf (int __fd, __const char *__restrict __fmt, ...)
412 __attribute__ ((__format__ (__printf__, 2, 3)));
413#endif
414
415
416__BEGIN_NAMESPACE_STD
417/* Read formatted input from STREAM.
418
419 This function is a possible cancellation point and therefore not
420 marked with __THROW. */
421extern int fscanf (FILE *__restrict __stream,
422 __const char *__restrict __format, ...)
423 __attribute__ ((__format__ (__scanf__, 2, 3))) __wur;
424libc_hidden_proto(fscanf)
425/* Read formatted input from stdin.
426
427 This function is a possible cancellation point and therefore not
428 marked with __THROW. */
429extern int scanf (__const char *__restrict __format, ...)
430 __attribute__ ((__format__ (__scanf__, 1, 2))) __wur;
431/* Read formatted input from S. */
432extern int sscanf (__const char *__restrict __s,
433 __const char *__restrict __format, ...)
434 __THROW __attribute__ ((__format__ (__scanf__, 2, 3)));
435libc_hidden_proto(sscanf)
436__END_NAMESPACE_STD
437
438#ifdef __USE_ISOC99
439__BEGIN_NAMESPACE_C99
440/* Read formatted input from S into argument list ARG.
441
442 This function is a possible cancellation point and therefore not
443 marked with __THROW. */
444extern int vfscanf (FILE *__restrict __s, __const char *__restrict __format,
445 __gnuc_va_list __arg)
446 __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
447libc_hidden_proto(vfscanf)
448
449/* Read formatted input from stdin into argument list ARG.
450
451 This function is a possible cancellation point and therefore not
452 marked with __THROW. */
453extern int vscanf (__const char *__restrict __format, __gnuc_va_list __arg)
454 __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
455
456/* Read formatted input from S into argument list ARG. */
457extern int vsscanf (__const char *__restrict __s,
458 __const char *__restrict __format, __gnuc_va_list __arg)
459 __THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
460libc_hidden_proto(vsscanf)
461__END_NAMESPACE_C99
462#endif /* Use ISO C9x. */
463
464
465__BEGIN_NAMESPACE_STD
466/* Read a character from STREAM.
467
468 These functions are possible cancellation points and therefore not
469 marked with __THROW. */
470extern int fgetc (FILE *__stream);
471libc_hidden_proto(fgetc)
472extern int getc (FILE *__stream);
473
474/* Read a character from stdin.
475
476 This function is a possible cancellation point and therefore not
477 marked with __THROW. */
478extern int getchar (void);
479__END_NAMESPACE_STD
480
481/* The C standard explicitly says this is a macro, so we always do the
482 optimization for it. */
483#define getc(_fp) __GETC(_fp)
484
485#if defined __USE_POSIX || defined __USE_MISC
486/* These are defined in POSIX.1:1996.
487
488 These functions are possible cancellation points and therefore not
489 marked with __THROW. */
490extern int getc_unlocked (FILE *__stream);
491libc_hidden_proto(getc_unlocked)
492extern int getchar_unlocked (void);
493libc_hidden_proto(getchar_unlocked)
494
495/* SUSv3 allows getc_unlocked to be a macro */
496#define getc_unlocked(_fp) __GETC_UNLOCKED(_fp)
497#endif /* Use POSIX or MISC. */
498
499#ifdef __USE_MISC
500/* Faster version when locking is not necessary.
501
502 This function is not part of POSIX and therefore no official
503 cancellation point. But due to similarity with an POSIX interface
504 or due to the implementation it is a cancellation point and
505 therefore not marked with __THROW. */
506extern int fgetc_unlocked (FILE *__stream);
507libc_hidden_proto(fgetc_unlocked)
508#endif /* Use MISC. */
509
510
511__BEGIN_NAMESPACE_STD
512/* Write a character to STREAM.
513
514 These functions are possible cancellation points and therefore not
515 marked with __THROW.
516
517 These functions is a possible cancellation point and therefore not
518 marked with __THROW. */
519extern int fputc (int __c, FILE *__stream);
520libc_hidden_proto(fputc)
521extern int putc (int __c, FILE *__stream);
522libc_hidden_proto(putc)
523
524/* Write a character to stdout.
525
526 This function is a possible cancellation point and therefore not
527 marked with __THROW. */
528extern int putchar (int __c);
529__END_NAMESPACE_STD
530
531/* The C standard explicitly says this can be a macro,
532 so we always do the optimization for it. */
533#define putc(_ch, _fp) __PUTC(_ch, _fp)
534
535#ifdef __USE_MISC
536/* Faster version when locking is not necessary.
537
538 This function is not part of POSIX and therefore no official
539 cancellation point. But due to similarity with an POSIX interface
540 or due to the implementation it is a cancellation point and
541 therefore not marked with __THROW. */
542extern int fputc_unlocked (int __c, FILE *__stream);
543libc_hidden_proto(fputc_unlocked)
544#endif /* Use MISC. */
545
546#if defined __USE_POSIX || defined __USE_MISC
547/* These are defined in POSIX.1:1996.
548
549 These functions are possible cancellation points and therefore not
550 marked with __THROW. */
551extern int putc_unlocked (int __c, FILE *__stream);
552libc_hidden_proto(putc_unlocked)
553extern int putchar_unlocked (int __c);
554
555/* SUSv3 allows putc_unlocked to be a macro */
556#define putc_unlocked(_ch, _fp) __PUTC_UNLOCKED(_ch, _fp)
557#endif /* Use POSIX or MISC. */
558
559
560#if defined __USE_SVID || defined __USE_MISC \
561 || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
562/* Get a word (int) from STREAM. */
563extern int getw (FILE *__stream);
564
565/* Write a word (int) to STREAM. */
566extern int putw (int __w, FILE *__stream);
567#endif
568
569
570__BEGIN_NAMESPACE_STD
571/* Get a newline-terminated string of finite length from STREAM.
572
573 This function is a possible cancellation point and therefore not
574 marked with __THROW. */
575extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
576 __wur;
577libc_hidden_proto(fgets)
578
579/* Get a newline-terminated string from stdin, removing the newline.
580 DO NOT USE THIS FUNCTION!! There is no limit on how much it will read.
581
582 This function is a possible cancellation point and therefore not
583 marked with __THROW. */
584extern char *gets (char *__s) __wur;
585__END_NAMESPACE_STD
586
587#ifdef __USE_GNU
588/* This function does the same as `fgets' but does not lock the stream.
589
590 This function is not part of POSIX and therefore no official
591 cancellation point. But due to similarity with an POSIX interface
592 or due to the implementation it is a cancellation point and
593 therefore not marked with __THROW. */
594extern char *fgets_unlocked (char *__restrict __s, int __n,
595 FILE *__restrict __stream) __wur;
596libc_hidden_proto(fgets_unlocked)
597#endif
598
599
600#ifdef __USE_GNU
601/* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
602 (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
603 NULL), pointing to *N characters of space. It is realloc'd as
604 necessary. Returns the number of characters read (not including the
605 null terminator), or -1 on error or EOF.
606
607 These functions are not part of POSIX and therefore no official
608 cancellation point. But due to similarity with an POSIX interface
609 or due to the implementation they are cancellation points and
610 therefore not marked with __THROW. */
611#if 0 /* uClibc: disabled */
612extern __ssize_t __getdelim (char **__restrict __lineptr,
613 size_t *__restrict __n, int __delimiter,
614 FILE *__restrict __stream) __wur;
615#endif
616extern __ssize_t getdelim (char **__restrict __lineptr,
617 size_t *__restrict __n, int __delimiter,
618 FILE *__restrict __stream) __wur;
619libc_hidden_proto(getdelim)
620
621/* Like `getdelim', but reads up to a newline.
622
623 This function is not part of POSIX and therefore no official
624 cancellation point. But due to similarity with an POSIX interface
625 or due to the implementation it is a cancellation point and
626 therefore not marked with __THROW. */
627extern __ssize_t getline (char **__restrict __lineptr,
628 size_t *__restrict __n,
629 FILE *__restrict __stream) __wur;
630libc_hidden_proto(getline)
631#endif
632
633
634__BEGIN_NAMESPACE_STD
635/* Write a string to STREAM.
636
637 This function is a possible cancellation points and therefore not
638 marked with __THROW. */
639extern int fputs (__const char *__restrict __s, FILE *__restrict __stream);
640libc_hidden_proto(fputs)
641
642/* Write a string, followed by a newline, to stdout.
643
644 This function is a possible cancellation points and therefore not
645 marked with __THROW. */
646extern int puts (__const char *__s);
647
648
649/* Push a character back onto the input buffer of STREAM.
650
651 This function is a possible cancellation points and therefore not
652 marked with __THROW. */
653extern int ungetc (int __c, FILE *__stream);
654libc_hidden_proto(ungetc)
655
656
657/* Read chunks of generic data from STREAM.
658
659 This function is a possible cancellation points and therefore not
660 marked with __THROW. */
661extern size_t fread (void *__restrict __ptr, size_t __size,
662 size_t __n, FILE *__restrict __stream) __wur;
663libc_hidden_proto(fread)
664/* Write chunks of generic data to STREAM.
665
666 This function is a possible cancellation points and therefore not
667 marked with __THROW. */
668extern size_t fwrite (__const void *__restrict __ptr, size_t __size,
669 size_t __n, FILE *__restrict __s) __wur;
670libc_hidden_proto(fwrite)
671__END_NAMESPACE_STD
672
673#ifdef __USE_GNU
674/* This function does the same as `fputs' but does not lock the stream.
675
676 This function is not part of POSIX and therefore no official
677 cancellation point. But due to similarity with an POSIX interface
678 or due to the implementation it is a cancellation point and
679 therefore not marked with __THROW. */
680extern int fputs_unlocked (__const char *__restrict __s,
681 FILE *__restrict __stream);
682libc_hidden_proto(fputs_unlocked)
683#endif
684
685#ifdef __USE_MISC
686/* Faster versions when locking is not necessary.
687
688 These functions are not part of POSIX and therefore no official
689 cancellation point. But due to similarity with an POSIX interface
690 or due to the implementation they are cancellation points and
691 therefore not marked with __THROW. */
692extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
693 size_t __n, FILE *__restrict __stream) __wur;
694libc_hidden_proto(fread_unlocked)
695extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size,
696 size_t __n, FILE *__restrict __stream) __wur;
697libc_hidden_proto(fwrite_unlocked)
698#endif
699
700
701__BEGIN_NAMESPACE_STD
702/* Seek to a certain position on STREAM.
703
704 This function is a possible cancellation point and therefore not
705 marked with __THROW. */
706extern int fseek (FILE *__stream, long int __off, int __whence);
707libc_hidden_proto(fseek)
708/* Return the current position of STREAM.
709
710 This function is a possible cancellation point and therefore not
711 marked with __THROW. */
712extern long int ftell (FILE *__stream) __wur;
713libc_hidden_proto(ftell)
714/* Rewind to the beginning of STREAM.
715
716 This function is a possible cancellation point and therefore not
717 marked with __THROW. */
718extern void rewind (FILE *__stream);
719libc_hidden_proto(rewind)
720__END_NAMESPACE_STD
721
722/* The Single Unix Specification, Version 2, specifies an alternative,
723 more adequate interface for the two functions above which deal with
724 file offset. `long int' is not the right type. These definitions
725 are originally defined in the Large File Support API. */
726
727#if defined __USE_LARGEFILE || defined __USE_XOPEN2K
728# ifndef __USE_FILE_OFFSET64
729/* Seek to a certain position on STREAM.
730
731 This function is a possible cancellation point and therefore not
732 marked with __THROW. */
733extern int fseeko (FILE *__stream, __off_t __off, int __whence);
734/* Return the current position of STREAM.
735
736 This function is a possible cancellation point and therefore not
737 marked with __THROW. */
738extern __off_t ftello (FILE *__stream) __wur;
739# else
740# ifdef __REDIRECT
741extern int __REDIRECT (fseeko,
742 (FILE *__stream, __off64_t __off, int __whence),
743 fseeko64);
744extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
745# else
746# define fseeko fseeko64
747# define ftello ftello64
748# endif
749# endif
750#endif
751
752__BEGIN_NAMESPACE_STD
753#ifndef __USE_FILE_OFFSET64
754/* Get STREAM's position.
755
756 This function is a possible cancellation point and therefore not
757 marked with __THROW. */
758extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
759/* Set STREAM's position.
760
761 This function is a possible cancellation point and therefore not
762 marked with __THROW. */
763extern int fsetpos (FILE *__stream, __const fpos_t *__pos);
764#else
765# ifdef __REDIRECT
766extern int __REDIRECT (fgetpos, (FILE *__restrict __stream,
767 fpos_t *__restrict __pos), fgetpos64);
768extern int __REDIRECT (fsetpos,
769 (FILE *__stream, __const fpos_t *__pos), fsetpos64);
770# else
771# define fgetpos fgetpos64
772# define fsetpos fsetpos64
773# endif
774#endif
775__END_NAMESPACE_STD
776
777#ifdef __USE_LARGEFILE64
778extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
779libc_hidden_proto(fseeko64)
780extern __off64_t ftello64 (FILE *__stream) __wur;
781libc_hidden_proto(ftello64)
782extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
783extern int fsetpos64 (FILE *__stream, __const fpos64_t *__pos);
784#endif
785
786__BEGIN_NAMESPACE_STD
787/* Clear the error and EOF indicators for STREAM. */
788extern void clearerr (FILE *__stream) __THROW;
789/* Return the EOF indicator for STREAM. */
790extern int feof (FILE *__stream) __THROW __wur;
791/* Return the error indicator for STREAM. */
792extern int ferror (FILE *__stream) __THROW __wur;
793__END_NAMESPACE_STD
794
795#ifdef __USE_MISC
796/* Faster versions when locking is not required. */
797extern void clearerr_unlocked (FILE *__stream) __THROW;
798extern int feof_unlocked (FILE *__stream) __THROW __wur;
799extern int ferror_unlocked (FILE *__stream) __THROW __wur;
800#endif
801
802
803__BEGIN_NAMESPACE_STD
804/* Print a message describing the meaning of the value of errno.
805
806 This function is a possible cancellation point and therefore not
807 marked with __THROW. */
808extern void perror (__const char *__s);
809libc_hidden_proto(perror)
810__END_NAMESPACE_STD
811
812#ifdef __UCLIBC_HAS_SYS_ERRLIST__
813/* These variables normally should not be used directly. The `strerror'
814 function provides all the needed functionality. */
815#ifdef __USE_BSD
816extern int sys_nerr;
817extern __const char *__const sys_errlist[];
818#endif
819#endif /* __UCLIBC_HAS_SYS_ERRLIST__ */
820
821
822#ifdef __USE_POSIX
823/* Return the system file descriptor for STREAM. */
824extern int fileno (FILE *__stream) __THROW __wur;
825libc_hidden_proto(fileno)
826#endif /* Use POSIX. */
827
828#ifdef __USE_MISC
829/* Faster version when locking is not required. */
830extern int fileno_unlocked (FILE *__stream) __THROW __wur;
831libc_hidden_proto(fileno_unlocked)
832#endif
833
834
835#if (defined __USE_POSIX2 || defined __USE_SVID || defined __USE_BSD || \
836 defined __USE_MISC)
837/* Create a new stream connected to a pipe running the given command.
838
839 This function is a possible cancellation point and therefore not
840 marked with __THROW. */
841extern FILE *popen (__const char *__command, __const char *__modes) __wur;
842
843/* Close a stream opened by popen and return the status of its child.
844
845 This function is a possible cancellation point and therefore not
846 marked with __THROW. */
847extern int pclose (FILE *__stream);
848#endif
849
850
851#ifdef __USE_POSIX
852/* Return the name of the controlling terminal. */
853extern char *ctermid (char *__s) __THROW;
854#endif /* Use POSIX. */
855
856
857#ifdef __USE_XOPEN
858/* Return the name of the current user. */
859extern char *cuserid (char *__s);
860#endif /* Use X/Open, but not issue 6. */
861
862
863#if 0 /* def __USE_GNU uClibc note: not supported */
864struct obstack; /* See <obstack.h>. */
865
866/* Write formatted output to an obstack. */
867extern int obstack_printf (struct obstack *__restrict __obstack,
868 __const char *__restrict __format, ...)
869 __THROW __attribute__ ((__format__ (__printf__, 2, 3)));
870extern int obstack_vprintf (struct obstack *__restrict __obstack,
871 __const char *__restrict __format,
872 __gnuc_va_list __args)
873 __THROW __attribute__ ((__format__ (__printf__, 2, 0)));
874#endif /* Use GNU. */
875
876
877#if defined __USE_POSIX || defined __USE_MISC
878/* These are defined in POSIX.1:1996. */
879
880/* Acquire ownership of STREAM. */
881extern void flockfile (FILE *__stream) __THROW;
882
883/* Try to acquire ownership of STREAM but do not block if it is not
884 possible. */
885extern int ftrylockfile (FILE *__stream) __THROW __wur;
886
887/* Relinquish the ownership granted for STREAM. */
888extern void funlockfile (FILE *__stream) __THROW;
889#endif /* POSIX || misc */
890
891#if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
892/* The X/Open standard requires some functions and variables to be
893 declared here which do not belong into this header. But we have to
894 follow. In GNU mode we don't do this nonsense. */
895# define __need_getopt
896# include <bits/getopt.h>
897#endif /* X/Open, but not issue 6 and not for GNU. */
898
899/* If we are compiling with optimizing read this file. It contains
900 several optimizing inline functions and macros. */
901#define fgetc(_fp) __FGETC(_fp)
902#define fputc(_ch, _fp) __FPUTC(_ch, _fp)
903
904#ifdef __USE_MISC
905#define fgetc_unlocked(_fp) __FGETC_UNLOCKED(_fp)
906#define fputc_unlocked(_ch, _fp) __FPUTC_UNLOCKED(_ch, _fp)
907#endif
908
909#ifndef __STDIO_GETC_MACRO
910#define __stdin stdin
911#endif
912#define getchar() __GETC(__stdin)
913
914#ifndef __STDIO_PUTC_MACRO
915#define __stdout stdout
916#endif
917#define putchar(_ch) __PUTC((_ch), __stdout)
918
919#if defined __USE_POSIX || defined __USE_MISC
920#define getchar_unlocked() __GETC_UNLOCKED(__stdin)
921#define putchar_unlocked(_ch) __PUTC_UNLOCKED((_ch), __stdout)
922#endif
923
924/* Clear the error and EOF indicators for STREAM. */
925#define clearerr(_fp) __CLEARERR(_fp)
926#define feof(_fp) __FEOF(_fp)
927#define ferror(_fp) __FERROR(_fp)
928
929#ifdef __USE_MISC
930#define clearerr_unlocked(_fp) __CLEARERR_UNLOCKED(_fp)
931#define feof_unlocked(_fp) __FEOF_UNLOCKED(_fp)
932#define ferror_unlocked(_fp) __FERROR_UNLOCKED(_fp)
933#endif
934
935__END_DECLS
936
937#endif /* <stdio.h> included. */
938
939#endif /* !_STDIO_H */