xref: /netbsd-src/include/stdio.h (revision 627f7eb200a4419d89b531d55fccd2ee3ffdcde0)
1 /*	$NetBSD: stdio.h,v 1.99 2020/03/20 01:08:42 joerg Exp $	*/
2 
3 /*-
4  * Copyright (c) 1990, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Chris Torek.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  *	@(#)stdio.h	8.5 (Berkeley) 4/29/95
35  */
36 
37 #ifndef	_STDIO_H_
38 #define	_STDIO_H_
39 
40 #include <sys/cdefs.h>
41 #include <sys/featuretest.h>
42 #include <sys/ansi.h>
43 
44 #if (!defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
45     !defined(_XOPEN_SOURCE)) || ((_POSIX_C_SOURCE - 0) >= 200809L || \
46      defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
47      (__cplusplus - 0) >= 201103L || defined(_NETBSD_SOURCE))
48 #define __STDIO_C99_FEATURES
49 #endif
50 
51 #ifdef	_BSD_SIZE_T_
52 typedef	_BSD_SIZE_T_	size_t;
53 #undef	_BSD_SIZE_T_
54 #endif
55 #ifdef	_BSD_SSIZE_T_
56 typedef	_BSD_SSIZE_T_	ssize_t;
57 #undef	_BSD_SSIZE_T_
58 #endif
59 
60 #if defined(_POSIX_C_SOURCE)
61 #ifndef __VA_LIST_DECLARED
62 typedef __va_list va_list;
63 #define __VA_LIST_DECLARED
64 #endif
65 #endif
66 
67 #include <sys/null.h>
68 
69 /*
70  * This is fairly grotesque, but pure ANSI code must not inspect the
71  * innards of an fpos_t anyway.  The library internally uses off_t,
72  * which we assume is exactly as big as eight chars.
73  */
74 typedef struct __sfpos {
75 	__off_t _pos;
76 	__mbstate_t _mbstate_in, _mbstate_out;
77 } fpos_t;
78 
79 #define	_FSTDIO			/* Define for new stdio with functions. */
80 
81 /*
82  * NB: to fit things in six character monocase externals, the stdio
83  * code uses the prefix `__s' for stdio objects, typically followed
84  * by a three-character attempt at a mnemonic.
85  */
86 
87 /* stdio buffers */
88 struct __sbuf {
89 	unsigned char *_base;
90 	int	_size;
91 };
92 
93 /*
94  * stdio state variables.
95  *
96  * The following always hold:
97  *
98  *	if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
99  *		_lbfsize is -_bf._size, else _lbfsize is 0
100  *	if _flags&__SRD, _w is 0
101  *	if _flags&__SWR, _r is 0
102  *
103  * This ensures that the getc and putc macros (or inline functions) never
104  * try to write or read from a file that is in `read' or `write' mode.
105  * (Moreover, they can, and do, automatically switch from read mode to
106  * write mode, and back, on "r+" and "w+" files.)
107  *
108  * _lbfsize is used only to make the inline line-buffered output stream
109  * code as compact as possible.
110  *
111  * _ub, _up, and _ur are used when ungetc() pushes back more characters
112  * than fit in the current _bf, or when ungetc() pushes back a character
113  * that does not match the previous one in _bf.  When this happens,
114  * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
115  * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
116  *
117  * NB: see WARNING above before changing the layout of this structure!
118  */
119 typedef	struct __sFILE {
120 	unsigned char *_p;	/* current position in (some) buffer */
121 	int	_r;		/* read space left for getc() */
122 	int	_w;		/* write space left for putc() */
123 	unsigned short _flags;	/* flags, below; this FILE is free if 0 */
124 	short	_file;		/* fileno, if Unix descriptor, else -1 */
125 	struct	__sbuf _bf;	/* the buffer (at least 1 byte, if !NULL) */
126 	int	_lbfsize;	/* 0 or -_bf._size, for inline putc */
127 
128 	/* operations */
129 	void	*_cookie;	/* cookie passed to io functions */
130 	int	(*_close)(void *);
131 	ssize_t	(*_read) (void *, void *, size_t);
132 	__off_t	(*_seek) (void *, __off_t, int);
133 	ssize_t	(*_write)(void *, const void *, size_t);
134 
135 	/* file extension */
136 	struct	__sbuf _ext;
137 
138 	/* separate buffer for long sequences of ungetc() */
139 	unsigned char *_up;	/* saved _p when _p is doing ungetc data */
140 	int	_ur;		/* saved _r when _r is counting ungetc data */
141 
142 	/* tricks to meet minimum requirements even when malloc() fails */
143 	unsigned char _ubuf[3];	/* guarantee an ungetc() buffer */
144 	unsigned char _nbuf[1];	/* guarantee a getc() buffer */
145 
146 	int	(*_flush)(void *);
147 	/* Formerly used by fgetln/fgetwln; kept for binary compatibility */
148 	char	_lb_unused[sizeof(struct __sbuf) - sizeof(int (*)(void *))];
149 
150 	/* Unix stdio files get aligned to block boundaries on fseek() */
151 	int	_blksize;	/* stat.st_blksize (may be != _bf._size) */
152 	__off_t	_offset;	/* current lseek offset */
153 } FILE;
154 
155 __BEGIN_DECLS
156 extern FILE __sF[3];
157 __END_DECLS
158 
159 #define	__SLBF	0x0001		/* line buffered */
160 #define	__SNBF	0x0002		/* unbuffered */
161 #define	__SRD	0x0004		/* OK to read */
162 #define	__SWR	0x0008		/* OK to write */
163 	/* RD and WR are never simultaneously asserted */
164 #define	__SRW	0x0010		/* open for reading & writing */
165 #define	__SEOF	0x0020		/* found EOF */
166 #define	__SERR	0x0040		/* found error */
167 #define	__SMBF	0x0080		/* _buf is from malloc */
168 #define	__SAPP	0x0100		/* fdopen()ed in append mode */
169 #define	__SSTR	0x0200		/* this is an sprintf/snprintf string */
170 #define	__SOPT	0x0400		/* do fseek() optimization */
171 #define	__SNPT	0x0800		/* do not do fseek() optimization */
172 #define	__SOFF	0x1000		/* set iff _offset is in fact correct */
173 #define	__SMOD	0x2000		/* true => fgetln modified _p text */
174 #define	__SALC	0x4000		/* allocate string space dynamically */
175 
176 /*
177  * The following three definitions are for ANSI C, which took them
178  * from System V, which brilliantly took internal interface macros and
179  * made them official arguments to setvbuf(), without renaming them.
180  * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
181  *
182  * Although numbered as their counterparts above, the implementation
183  * does not rely on this.
184  */
185 #define	_IOFBF	0		/* setvbuf should set fully buffered */
186 #define	_IOLBF	1		/* setvbuf should set line buffered */
187 #define	_IONBF	2		/* setvbuf should set unbuffered */
188 
189 #define	BUFSIZ	1024		/* size of buffer used by setbuf */
190 #define	EOF	(-1)
191 
192 /*
193  * FOPEN_MAX is a minimum maximum, and is the number of streams that
194  * stdio can provide without attempting to allocate further resources
195  * (which could fail).  Do not use this for anything.
196  */
197 				/* must be == _POSIX_STREAM_MAX <limits.h> */
198 #define	FOPEN_MAX	20	/* must be <= OPEN_MAX <sys/syslimits.h> */
199 #define	FILENAME_MAX	1024	/* must be <= PATH_MAX <sys/syslimits.h> */
200 
201 /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
202 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
203 #define	P_tmpdir	"/tmp/"
204 #endif
205 #define	L_tmpnam	1024	/* XXX must be == PATH_MAX */
206 /* Always ensure that this is consistent with <limits.h> */
207 #ifndef TMP_MAX
208 #define TMP_MAX			308915776	/* Legacy */
209 #endif
210 
211 /* Always ensure that these are consistent with <fcntl.h> and <unistd.h>! */
212 #ifndef SEEK_SET
213 #define	SEEK_SET	0	/* set file offset to offset */
214 #endif
215 #ifndef SEEK_CUR
216 #define	SEEK_CUR	1	/* set file offset to current plus offset */
217 #endif
218 #ifndef SEEK_END
219 #define	SEEK_END	2	/* set file offset to EOF plus offset */
220 #endif
221 
222 #define	stdin	(&__sF[0])
223 #define	stdout	(&__sF[1])
224 #define	stderr	(&__sF[2])
225 
226 /*
227  * Functions defined in ANSI C standard.
228  */
229 __BEGIN_DECLS
230 void	 clearerr(FILE *);
231 int	 fclose(FILE *);
232 int	 feof(FILE *);
233 int	 ferror(FILE *);
234 int	 fflush(FILE *);
235 int	 fgetc(FILE *);
236 char	*fgets(char * __restrict, int, FILE * __restrict);
237 FILE	*fopen(const char * __restrict , const char * __restrict);
238 int	 fprintf(FILE * __restrict, const char * __restrict, ...)
239 		__printflike(2, 3);
240 int	 fputc(int, FILE *);
241 int	 fputs(const char * __restrict, FILE * __restrict);
242 size_t	 fread(void * __restrict, size_t, size_t, FILE * __restrict);
243 FILE	*freopen(const char * __restrict, const char * __restrict,
244 	    FILE * __restrict);
245 int	 fscanf(FILE * __restrict, const char * __restrict, ...)
246 		__scanflike(2, 3);
247 int	 fseek(FILE *, long, int);
248 long	 ftell(FILE *);
249 size_t	 fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
250 int	 getc(FILE *);
251 int	 getchar(void);
252 void	 perror(const char *);
253 int	 printf(const char * __restrict, ...)
254 		__printflike(1, 2);
255 int	 putc(int, FILE *);
256 int	 putchar(int);
257 int	 puts(const char *);
258 int	 remove(const char *);
259 void	 rewind(FILE *);
260 int	 scanf(const char * __restrict, ...)
261 		__scanflike(1, 2);
262 void	 setbuf(FILE * __restrict, char * __restrict);
263 int	 setvbuf(FILE * __restrict, char * __restrict, int, size_t);
264 int	 sscanf(const char * __restrict, const char * __restrict, ...)
265 		__scanflike(2, 3);
266 FILE	*tmpfile(void);
267 int	 ungetc(int, FILE *);
268 int	 vfprintf(FILE * __restrict, const char * __restrict, __va_list)
269 		__printflike(2, 0);
270 int	 vprintf(const char * __restrict, __va_list)
271 		__printflike(1, 0);
272 
273 #ifndef __AUDIT__
274 char	*gets(char *);
275 int	 sprintf(char * __restrict, const char * __restrict, ...)
276 		__printflike(2, 3);
277 char	*tmpnam(char *);
278 int	 vsprintf(char * __restrict, const char * __restrict,
279     __va_list)
280 		__printflike(2, 0);
281 #endif
282 
283 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
284 int	 rename (const char *, const char *) __RENAME(__posix_rename);
285 #else
286 int	 rename (const char *, const char *);
287 #endif
288 __END_DECLS
289 
290 #ifndef __LIBC12_SOURCE__
291 int	 fgetpos(FILE * __restrict, fpos_t * __restrict) __RENAME(__fgetpos50);
292 int	 fsetpos(FILE *, const fpos_t *) __RENAME(__fsetpos50);
293 #endif
294 /*
295  * IEEE Std 1003.1-90
296  */
297 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
298     defined(_NETBSD_SOURCE)
299 #define	L_ctermid	1024	/* size for ctermid(); PATH_MAX */
300 #define L_cuserid	9	/* size for cuserid(); UT_NAMESIZE + 1 */
301 
302 __BEGIN_DECLS
303 char	*ctermid(char *);
304 #ifndef __CUSERID_DECLARED
305 #define __CUSERID_DECLARED
306 /* also declared in unistd.h */
307 char	*cuserid(char *);
308 #endif /* __CUSERID_DECLARED */
309 FILE	*fdopen(int, const char *);
310 int	 fileno(FILE *);
311 __END_DECLS
312 #endif /* not ANSI */
313 
314 /*
315  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
316  */
317 #if defined(__STDIO_C99_FEATURES) || (_POSIX_C_SOURCE - 0) >= 199506L || \
318     (_XOPEN_SOURCE - 0) >= 500 || defined(_REENTRANT)
319 __BEGIN_DECLS
320 void	flockfile(FILE *);
321 int	ftrylockfile(FILE *);
322 void	funlockfile(FILE *);
323 int	getc_unlocked(FILE *);
324 int	getchar_unlocked(void);
325 int	putc_unlocked(int, FILE *);
326 int	putchar_unlocked(int);
327 __END_DECLS
328 #endif /* C99 || _POSIX_C_SOURCE >= 1995056 || _XOPEN_SOURCE >= 500 || ... */
329 
330 /*
331  * Functions defined in POSIX 1003.2 and XPG2 or later.
332  */
333 #if (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 2 || \
334     defined(_NETBSD_SOURCE)
335 __BEGIN_DECLS
336 int	 pclose(FILE *);
337 FILE	*popen(const char *, const char *);
338 __END_DECLS
339 #endif
340 #ifdef _NETBSD_SOURCE
341 __BEGIN_DECLS
342 FILE	*popenve(const char *, char *const *, char *const *, const char *);
343 __END_DECLS
344 #endif
345 
346 /*
347  * Functions defined in ISO XPG4.2, ISO C99, POSIX 1003.1-2001 or later.
348  */
349 #if defined(__STDIO_C99_FEATURES) || (_POSIX_C_SOURCE - 0) >= 200112L || \
350     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
351     (_XOPEN_SOURCE - 0) >= 500
352 __BEGIN_DECLS
353 int	 snprintf(char * __restrict, size_t, const char * __restrict, ...)
354 		__printflike(3, 4);
355 int	 vsnprintf(char * __restrict, size_t, const char * __restrict,
356 	    __va_list)
357 		__printflike(3, 0);
358 __END_DECLS
359 #endif
360 
361 /*
362  * Functions defined in XPG4.2.
363  */
364 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
365 __BEGIN_DECLS
366 int	 getw(FILE *);
367 int	 putw(int, FILE *);
368 
369 #ifndef __AUDIT__
370 char	*tempnam(const char *, const char *);
371 #endif
372 __END_DECLS
373 #endif
374 
375 /*
376  * X/Open CAE Specification Issue 5 Version 2
377  */
378 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 500 || \
379     defined(_NETBSD_SOURCE)
380 #ifndef	off_t
381 typedef	__off_t		off_t;
382 #define	off_t		__off_t
383 #endif /* off_t */
384 
385 __BEGIN_DECLS
386 int	 fseeko(FILE *, off_t, int);
387 off_t	 ftello(FILE *);
388 __END_DECLS
389 #endif /* (_POSIX_C_SOURCE - 0) >= 200112L || _XOPEN_SOURCE >= 500 || ... */
390 
391 /*
392  * Functions defined in ISO C99.  Still put under _NETBSD_SOURCE due to
393  * backward compatible.
394  */
395 #if defined(__STDIO_C99_FEATURES)
396 __BEGIN_DECLS
397 int	 vscanf(const char * __restrict, __va_list)
398 		__scanflike(1, 0);
399 int	 vfscanf(FILE * __restrict, const char * __restrict, __va_list)
400 		__scanflike(2, 0);
401 int	 vsscanf(const char * __restrict, const char * __restrict,
402     __va_list)
403     __scanflike(2, 0);
404 __END_DECLS
405 #endif /* C99 */
406 
407 /*
408  * Routines that are purely local.
409  */
410 #if defined(_NETBSD_SOURCE)
411 
412 #define	FPARSELN_UNESCESC	0x01
413 #define	FPARSELN_UNESCCONT	0x02
414 #define	FPARSELN_UNESCCOMM	0x04
415 #define	FPARSELN_UNESCREST	0x08
416 #define	FPARSELN_UNESCALL	0x0f
417 
418 __BEGIN_DECLS
419 int	 asprintf(char ** __restrict, const char * __restrict, ...)
420 		__printflike(2, 3);
421 char	*fgetln(FILE * __restrict, size_t * __restrict);
422 char	*fparseln(FILE *, size_t *, size_t *, const char[3], int);
423 int	 fpurge(FILE *);
424 void	 setbuffer(FILE *, char *, int);
425 int	 setlinebuf(FILE *);
426 int	 vasprintf(char ** __restrict, const char * __restrict,
427     __va_list)
428 		__printflike(2, 0);
429 const char *fmtcheck(const char *, const char *)
430 		__format_arg(2);
431 __END_DECLS
432 
433 /*
434  * Stdio function-access interface.
435  */
436 __BEGIN_DECLS
437 FILE	*funopen(const void *,
438     int (*)(void *, char *, int),
439     int (*)(void *, const char *, int),
440     off_t (*)(void *, off_t, int),
441     int (*)(void *));
442 FILE	*funopen2(const void *,
443     ssize_t (*)(void *, void *, size_t),
444     ssize_t (*)(void *, const void *, size_t),
445     off_t (*)(void *, off_t, int),
446     int (*)(void *),
447     int (*)(void *));
448 __END_DECLS
449 #define	fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
450 #define	fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
451 #define	fropen2(cookie, fn) funopen2(cookie, fn, 0, 0, 0, 0)
452 #define	fwopen2(cookie, fn) funopen2(cookie, 0, fn, 0, 0, 0)
453 #endif /* _NETBSD_SOURCE */
454 
455 /*
456  * Functions internal to the implementation.
457  */
458 __BEGIN_DECLS
459 int	__srget(FILE *);
460 int	__swbuf(int, FILE *);
461 __END_DECLS
462 
463 /*
464  * The __sfoo macros are here so that we can
465  * define function versions in the C library.
466  */
467 #define	__sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
468 #if defined(__GNUC__) && defined(__STDC__)
469 static __inline int __sputc(int _c, FILE *_p) {
470 	if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
471 		return *_p->_p++ = (unsigned char)_c;
472 	else
473 		return __swbuf(_c, _p);
474 }
475 #else
476 /*
477  * This has been tuned to generate reasonable code on the vax using pcc.
478  */
479 #define	__sputc(c, p) \
480 	(--(p)->_w < 0 ? \
481 		(p)->_w >= (p)->_lbfsize ? \
482 			(*(p)->_p = (c)), *(p)->_p != '\n' ? \
483 				(int)*(p)->_p++ : \
484 				__swbuf('\n', p) : \
485 			__swbuf((int)(c), p) : \
486 		(*(p)->_p = (c), (int)*(p)->_p++))
487 #endif
488 
489 #define	__sfeof(p)	(((p)->_flags & __SEOF) != 0)
490 #define	__sferror(p)	(((p)->_flags & __SERR) != 0)
491 #define	__sclearerr(p)	((void)((p)->_flags &= (unsigned short)~(__SERR|__SEOF)))
492 #define	__sfileno(p)	\
493     ((p)->_file == -1 ? -1 : (int)(unsigned short)(p)->_file)
494 
495 #if !defined(__lint__) && !defined(__cplusplus)
496 #if !defined(_REENTRANT) && !defined(_PTHREADS)
497 #define	feof(p)		__sfeof(p)
498 #define	ferror(p)	__sferror(p)
499 #define	clearerr(p)	__sclearerr(p)
500 
501 #define	getc(fp)	__sgetc(fp)
502 #define putc(x, fp)	__sputc(x, fp)
503 #endif /* !_REENTRANT && !_PTHREADS */
504 
505 #define	getchar()	getc(stdin)
506 #define	putchar(x)	putc(x, stdout)
507 
508 #endif /* !__lint__ && !__cplusplus */
509 
510 #if (defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
511     defined(_NETBSD_SOURCE)) && !defined(__cplusplus)
512 #if !defined(_REENTRANT) && !defined(_PTHREADS)
513 #define	fileno(p)	__sfileno(p)
514 #endif /* !_REENTRANT && !_PTHREADS */
515 #endif /* !_ANSI_SOURCE && !__cplusplus*/
516 
517 #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
518 __BEGIN_DECLS
519 int	 vdprintf(int, const char * __restrict, __va_list)
520 		__printflike(2, 0);
521 int	 dprintf(int, const char * __restrict, ...)
522 		__printflike(2, 3);
523 __END_DECLS
524 #endif /* (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) */
525 
526 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
527     defined(_REENTRANT) || defined(_NETBSD_SOURCE) && !defined(__cplusplus)
528 #define getc_unlocked(fp)	__sgetc(fp)
529 #define putc_unlocked(x, fp)	__sputc(x, fp)
530 
531 #define getchar_unlocked()	getc_unlocked(stdin)
532 #define putchar_unlocked(x)	putc_unlocked(x, stdout)
533 #endif /* _POSIX_C_SOURCE >= 199506 || _XOPEN_SOURCE >= 500 || _REENTRANT... */
534 
535 #if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0) >= 700 || \
536     defined(_NETBSD_SOURCE)
537 __BEGIN_DECLS
538 FILE *fmemopen(void * __restrict, size_t, const char * __restrict);
539 FILE *open_memstream(char **, size_t *);
540 ssize_t	 getdelim(char ** __restrict, size_t * __restrict, int,
541 	    FILE * __restrict);
542 ssize_t	 getline(char ** __restrict, size_t * __restrict, FILE * __restrict);
543 __END_DECLS
544 #endif
545 
546 #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
547 #  ifndef __LOCALE_T_DECLARED
548 typedef struct _locale		*locale_t;
549 #  define __LOCALE_T_DECLARED
550 #  endif
551 __BEGIN_DECLS
552 int	 fprintf_l(FILE * __restrict, locale_t, const char * __restrict, ...)
553 		__printflike(3, 4);
554 int	 vfprintf_l(FILE * __restrict, locale_t, const char * __restrict,
555 		__va_list) __printflike(3, 0);
556 int	 printf_l(locale_t, const char * __restrict, ...)
557 		__printflike(2, 3);
558 int	 vprintf_l(locale_t, const char * __restrict, __va_list)
559 		__printflike(2, 0);
560 int	 asprintf_l(char ** __restrict, locale_t, const char * __restrict, ...)
561 		__printflike(3, 4);
562 int	 vasprintf_l(char ** __restrict, locale_t, const char * __restrict,
563     __va_list)
564 		__printflike(3, 0);
565 int	 vdprintf_l(int, locale_t, const char * __restrict, __va_list)
566 		__printflike(3, 0);
567 int	 dprintf_l(int, locale_t, const char * __restrict, ...)
568 		__printflike(3, 4);
569 int	 snprintf_l(char * __restrict, size_t, locale_t,
570 		    const char * __restrict, ...) __printflike(4, 5);
571 int	 vsnprintf_l(char * __restrict, size_t, locale_t,
572 		     const char * __restrict, __va_list) __printflike(4, 0);
573 #ifndef __AUDIT__
574 int	 sprintf_l(char * __restrict, locale_t, const char * __restrict, ...)
575 		   __printflike(3, 4);
576 int	 vsprintf_l(char * __restrict, locale_t, const char * __restrict,
577 		    __va_list) __printflike(3, 0);
578 #endif
579 
580 int	 fscanf_l(FILE * __restrict, locale_t, const char * __restrict, ...)
581     __scanflike(3, 4);
582 int	 scanf_l(locale_t, const char * __restrict, ...)
583     __scanflike(2, 3);
584 int	 sscanf_l(const char * __restrict, locale_t,
585     const char * __restrict, ...) __scanflike(3, 4);
586 int	 vscanf_l(locale_t, const char * __restrict, __va_list)
587     __scanflike(2, 0);
588 int	 vfscanf_l(FILE * __restrict, locale_t, const char * __restrict,
589     __va_list) __scanflike(3, 0);
590 int	 vsscanf_l(const char * __restrict, locale_t, const char * __restrict,
591     __va_list) __scanflike(3, 0);
592 #ifdef _NETBSD_SOURCE
593 int	snprintf_ss(char *restrict, size_t, const char * __restrict, ...)
594     __printflike(3, 4);
595 int	vsnprintf_ss(char *restrict, size_t, const char * __restrict, __va_list)
596     __printflike(3, 0);
597 #endif
598 __END_DECLS
599 #endif
600 
601 #if _FORTIFY_SOURCE > 0
602 #include <ssp/stdio.h>
603 #endif
604 
605 #endif /* _STDIO_H_ */
606