include/stdio.h

   1 /*      $NetBSD: stdio.h,v 1.82 2012/04/18 19:30:15 christos 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 #ifdef  _BSD_SIZE_T_
  45 typedef _BSD_SIZE_T_    size_t;
  46 #undef  _BSD_SIZE_T_
  47 #endif
  48 #ifdef  _BSD_SSIZE_T_
  49 typedef _BSD_SSIZE_T_   ssize_t;
  50 #undef  _BSD_SSIZE_T_
  51 #endif
  52
  53 #if defined(_POSIX_C_SOURCE)
  54 #ifndef __VA_LIST_DECLARED
  55 typedef __va_list va_list;
  56 #define __VA_LIST_DECLARED
  57 #endif
  58 #endif
  59
  60 #include <sys/null.h>
  61
  62 /*
  63  * This is fairly grotesque, but pure ANSI code must not inspect the
  64  * innards of an fpos_t anyway.  The library internally uses off_t,
  65  * which we assume is exactly as big as eight chars.
  66  */
  67 typedef struct __sfpos {
  68         __off_t _pos;
  69         __mbstate_t _mbstate_in, _mbstate_out;
  70 } fpos_t;
  71
  72 #define _FSTDIO                 /* Define for new stdio with functions. */
  73
  74 /*
  75  * NB: to fit things in six character monocase externals, the stdio
  76  * code uses the prefix `__s' for stdio objects, typically followed
  77  * by a three-character attempt at a mnemonic.
  78  */
  79
  80 /* stdio buffers */
  81 struct __sbuf {
  82         unsigned char *_base;
  83         int     _size;
  84 };
  85
  86 /*
  87  * stdio state variables.
  88  *
  89  * The following always hold:
  90  *
  91  *      if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
  92  *              _lbfsize is -_bf._size, else _lbfsize is 0
  93  *      if _flags&__SRD, _w is 0
  94  *      if _flags&__SWR, _r is 0
  95  *
  96  * This ensures that the getc and putc macros (or inline functions) never
  97  * try to write or read from a file that is in `read' or `write' mode.
  98  * (Moreover, they can, and do, automatically switch from read mode to
  99  * write mode, and back, on "r+" and "w+" files.)
 100  *
 101  * _lbfsize is used only to make the inline line-buffered output stream
 102  * code as compact as possible.
 103  *
 104  * _ub, _up, and _ur are used when ungetc() pushes back more characters
 105  * than fit in the current _bf, or when ungetc() pushes back a character
 106  * that does not match the previous one in _bf.  When this happens,
 107  * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
 108  * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
 109  *
 110  * NB: see WARNING above before changing the layout of this structure!
 111  */
 112 typedef struct __sFILE {
 113         unsigned char *_p;      /* current position in (some) buffer */
 114         int     _r;             /* read space left for getc() */
 115         int     _w;             /* write space left for putc() */
 116         unsigned short _flags;  /* flags, below; this FILE is free if 0 */
 117         short   _file;          /* fileno, if Unix descriptor, else -1 */
 118         struct  __sbuf _bf;     /* the buffer (at least 1 byte, if !NULL) */
 119         int     _lbfsize;       /* 0 or -_bf._size, for inline putc */
 120
 121         /* operations */
 122         void    *_cookie;       /* cookie passed to io functions */
 123         int     (*_close)(void *);
 124         ssize_t (*_read) (void *, void *, size_t);
 125         __off_t (*_seek) (void *, __off_t, int);
 126         ssize_t (*_write)(void *, const void *, size_t);
 127
 128         /* file extension */
 129         struct  __sbuf _ext;
 130
 131         /* separate buffer for long sequences of ungetc() */
 132         unsigned char *_up;     /* saved _p when _p is doing ungetc data */
 133         int     _ur;            /* saved _r when _r is counting ungetc data */
 134
 135         /* tricks to meet minimum requirements even when malloc() fails */
 136         unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
 137         unsigned char _nbuf[1]; /* guarantee a getc() buffer */
 138
 139         int     (*_flush)(void *);
 140         /* Formerly used by fgetln/fgetwln; kept for binary compatibility */
 141         char    _lb_unused[sizeof(struct __sbuf) - sizeof(int (*)(void *))];
 142
 143         /* Unix stdio files get aligned to block boundaries on fseek() */
 144         int     _blksize;       /* stat.st_blksize (may be != _bf._size) */
 145         __off_t _offset;        /* current lseek offset */
 146 } FILE;
 147
 148 __BEGIN_DECLS
 149 extern FILE __sF[3];
 150 __END_DECLS
 151
 152 #define __SLBF  0x0001          /* line buffered */
 153 #define __SNBF  0x0002          /* unbuffered */
 154 #define __SRD   0x0004          /* OK to read */
 155 #define __SWR   0x0008          /* OK to write */
 156         /* RD and WR are never simultaneously asserted */
 157 #define __SRW   0x0010          /* open for reading & writing */
 158 #define __SEOF  0x0020          /* found EOF */
 159 #define __SERR  0x0040          /* found error */
 160 #define __SMBF  0x0080          /* _buf is from malloc */
 161 #define __SAPP  0x0100          /* fdopen()ed in append mode */
 162 #define __SSTR  0x0200          /* this is an sprintf/snprintf string */
 163 #define __SOPT  0x0400          /* do fseek() optimization */
 164 #define __SNPT  0x0800          /* do not do fseek() optimization */
 165 #define __SOFF  0x1000          /* set iff _offset is in fact correct */
 166 #define __SMOD  0x2000          /* true => fgetln modified _p text */
 167 #define __SALC  0x4000          /* allocate string space dynamically */
 168
 169 /*
 170  * The following three definitions are for ANSI C, which took them
 171  * from System V, which brilliantly took internal interface macros and
 172  * made them official arguments to setvbuf(), without renaming them.
 173  * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
 174  *
 175  * Although numbered as their counterparts above, the implementation
 176  * does not rely on this.
 177  */
 178 #define _IOFBF  0               /* setvbuf should set fully buffered */
 179 #define _IOLBF  1               /* setvbuf should set line buffered */
 180 #define _IONBF  2               /* setvbuf should set unbuffered */
 181
 182 #define BUFSIZ  1024            /* size of buffer used by setbuf */
 183 #define EOF     (-1)
 184
 185 /*
 186  * FOPEN_MAX is a minimum maximum, and is the number of streams that
 187  * stdio can provide without attempting to allocate further resources
 188  * (which could fail).  Do not use this for anything.
 189  */
 190                                 /* must be == _POSIX_STREAM_MAX <limits.h> */
 191 #define FOPEN_MAX       20      /* must be <= OPEN_MAX <sys/syslimits.h> */
 192 #define FILENAME_MAX    255     /* must be <= PATH_MAX <sys/syslimits.h> */
 193
 194 /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
 195 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 196 #define P_tmpdir        "/var/tmp/"
 197 #endif
 198 #define L_tmpnam        1024    /* XXX must be == PATH_MAX */
 199 /* Always ensure that this is consistent with <limits.h> */
 200 #ifndef TMP_MAX
 201 #define TMP_MAX                 308915776       /* Legacy */
 202 #endif
 203
 204 /* Always ensure that these are consistent with <fcntl.h> and <unistd.h>! */
 205 #ifndef SEEK_SET
 206 #define SEEK_SET        0       /* set file offset to offset */
 207 #endif
 208 #ifndef SEEK_CUR
 209 #define SEEK_CUR        1       /* set file offset to current plus offset */
 210 #endif
 211 #ifndef SEEK_END
 212 #define SEEK_END        2       /* set file offset to EOF plus offset */
 213 #endif
 214
 215 #define stdin   (&__sF[0])
 216 #define stdout  (&__sF[1])
 217 #define stderr  (&__sF[2])
 218
 219 /*
 220  * Functions defined in ANSI C standard.
 221  */
 222 __BEGIN_DECLS
 223 void     clearerr(FILE *);
 224 int      fclose(FILE *);
 225 int      feof(FILE *);
 226 int      ferror(FILE *);
 227 int      fflush(FILE *);
 228 int      fgetc(FILE *);
 229 char    *fgets(char * __restrict, int, FILE * __restrict);
 230 FILE    *fopen(const char * __restrict , const char * __restrict);
 231 int      fprintf(FILE * __restrict , const char * __restrict, ...)
 232                 __printflike(2, 3);
 233 int      fputc(int, FILE *);
 234 int      fputs(const char * __restrict, FILE * __restrict);
 235 size_t   fread(void * __restrict, size_t, size_t, FILE * __restrict);
 236 FILE    *freopen(const char * __restrict, const char * __restrict,
 237             FILE * __restrict);
 238 int      fscanf(FILE * __restrict, const char * __restrict, ...)
 239                 __scanflike(2, 3);
 240 int      fseek(FILE *, long, int);
 241 long     ftell(FILE *);
 242 size_t   fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
 243 int      getc(FILE *);
 244 int      getchar(void);
 245 ssize_t  getdelim(char ** __restrict, size_t * __restrict, int,
 246             FILE * __restrict);
 247 ssize_t  getline(char ** __restrict, size_t * __restrict, FILE * __restrict);
 248 void     perror(const char *);
 249 int      printf(const char * __restrict, ...)
 250                 __printflike(1, 2);
 251 int      putc(int, FILE *);
 252 int      putchar(int);
 253 int      puts(const char *);
 254 int      remove(const char *);
 255 void     rewind(FILE *);
 256 int      scanf(const char * __restrict, ...)
 257                 __scanflike(1, 2);
 258 void     setbuf(FILE * __restrict, char * __restrict);
 259 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
 260 int      sscanf(const char * __restrict, const char * __restrict, ...)
 261                 __scanflike(2, 3);
 262 FILE    *tmpfile(void);
 263 int      ungetc(int, FILE *);
 264 int      vfprintf(FILE * __restrict, const char * __restrict, __va_list)
 265                 __printflike(2, 0);
 266 int      vprintf(const char * __restrict, __va_list)
 267                 __printflike(1, 0);
 268
 269 #ifndef __AUDIT__
 270 char    *gets(char *);
 271 int      sprintf(char * __restrict, const char * __restrict, ...)
 272                 __printflike(2, 3);
 273 char    *tmpnam(char *);
 274 int      vsprintf(char * __restrict, const char * __restrict,
 275     __va_list)
 276                 __printflike(2, 0);
 277 #endif
 278
 279 #if !defined(__minix) && (defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE))
 280 int      rename (const char *, const char *) __RENAME(__posix_rename);
 281 #else
 282 int      rename (const char *, const char *);
 283 #endif
 284 __END_DECLS
 285
 286 #ifndef __LIBC12_SOURCE__
 287 int      fgetpos(FILE * __restrict, fpos_t * __restrict) __RENAME(__fgetpos50);
 288 int      fsetpos(FILE *, const fpos_t *) __RENAME(__fsetpos50);
 289 #endif
 290 /*
 291  * IEEE Std 1003.1-90
 292  */
 293 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
 294     defined(_NETBSD_SOURCE)
 295 #define L_ctermid       1024    /* size for ctermid(); PATH_MAX */
 296 #define L_cuserid       9       /* size for cuserid(); UT_NAMESIZE + 1 */
 297
 298 __BEGIN_DECLS
 299 char    *ctermid(char *);
 300 #ifndef __CUSERID_DECLARED
 301 #define __CUSERID_DECLARED
 302 /* also declared in unistd.h */
 303 char    *cuserid(char *);
 304 #endif /* __CUSERID_DECLARED */
 305 FILE    *fdopen(int, const char *);
 306 int      fileno(FILE *);
 307 __END_DECLS
 308 #endif /* not ANSI */
 309
 310 /*
 311  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
 312  */
 313 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
 314     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
 315 __BEGIN_DECLS
 316 void    flockfile(FILE *);
 317 int     ftrylockfile(FILE *);
 318 void    funlockfile(FILE *);
 319 int     getc_unlocked(FILE *);
 320 int     getchar_unlocked(void);
 321 int     putc_unlocked(int, FILE *);
 322 int     putchar_unlocked(int);
 323 __END_DECLS
 324 #endif /* _POSIX_C_SOURCE >= 1995056 || _XOPEN_SOURCE >= 500 || ... */
 325
 326 /*
 327  * Functions defined in POSIX 1003.2 and XPG2 or later.
 328  */
 329 #if (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 2 || \
 330     defined(_NETBSD_SOURCE)
 331 __BEGIN_DECLS
 332 int      pclose(FILE *);
 333 FILE    *popen(const char *, const char *);
 334 __END_DECLS
 335 #endif
 336
 337 /*
 338  * Functions defined in ISO XPG4.2, ISO C99, POSIX 1003.1-2001 or later.
 339  */
 340 #if ((__STDC_VERSION__ - 0) >= 199901L) || \
 341     ((_POSIX_C_SOURCE - 0) >= 200112L) || \
 342     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 343     ((_XOPEN_SOURCE - 0) >= 500) || \
 344     defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
 345 __BEGIN_DECLS
 346 int      snprintf(char * __restrict, size_t, const char * __restrict, ...)
 347                 __printflike(3, 4);
 348 int      vsnprintf(char * __restrict, size_t, const char * __restrict,
 349             __va_list)
 350                 __printflike(3, 0);
 351 __END_DECLS
 352 #endif
 353
 354 /*
 355  * Functions defined in XPG4.2.
 356  */
 357 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 358 __BEGIN_DECLS
 359 int      getw(FILE *);
 360 int      putw(int, FILE *);
 361
 362 #ifndef __AUDIT__
 363 char    *tempnam(const char *, const char *);
 364 #endif
 365 __END_DECLS
 366 #endif
 367
 368 /*
 369  * X/Open CAE Specification Issue 5 Version 2
 370  */
 371 #if (_XOPEN_SOURCE - 0) >= 500 || defined(_LARGEFILE_SOURCE) || \
 372     defined(_NETBSD_SOURCE)
 373 #ifndef off_t
 374 typedef __off_t         off_t;
 375 #define off_t           __off_t
 376 #endif /* off_t */
 377
 378 __BEGIN_DECLS
 379 int      fseeko(FILE *, off_t, int);
 380 off_t    ftello(FILE *);
 381 __END_DECLS
 382 #endif /* _XOPEN_SOURCE >= 500 || _LARGEFILE_SOURCE || _NETBSD_SOURCE */
 383
 384 /*
 385  * Functions defined in ISO C99.  Still put under _NETBSD_SOURCE due to
 386  * backward compatible.
 387  */
 388 #if defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
 389 __BEGIN_DECLS
 390 int      vscanf(const char * __restrict, __va_list)
 391                 __scanflike(1, 0);
 392 int      vfscanf(FILE * __restrict, const char * __restrict, __va_list)
 393                 __scanflike(2, 0);
 394 int      vsscanf(const char * __restrict, const char * __restrict,
 395     __va_list)
 396     __scanflike(2, 0);
 397 __END_DECLS
 398 #endif /* _ISOC99_SOURCE || _NETBSD_SOURCE */
 399
 400 /*
 401  * Routines that are purely local.
 402  */
 403 #if defined(_NETBSD_SOURCE)
 404
 405 #define FPARSELN_UNESCESC       0x01
 406 #define FPARSELN_UNESCCONT      0x02
 407 #define FPARSELN_UNESCCOMM      0x04
 408 #define FPARSELN_UNESCREST      0x08
 409 #define FPARSELN_UNESCALL       0x0f
 410
 411 __BEGIN_DECLS
 412 int      asprintf(char ** __restrict, const char * __restrict, ...)
 413                 __printflike(2, 3);
 414 char    *fgetln(FILE * __restrict, size_t * __restrict);
 415 char    *fparseln(FILE *, size_t *, size_t *, const char[3], int);
 416 int      fpurge(FILE *);
 417 void     setbuffer(FILE *, char *, int);
 418 int      setlinebuf(FILE *);
 419 int      vasprintf(char ** __restrict, const char * __restrict,
 420     __va_list)
 421                 __printflike(2, 0);
 422 const char *fmtcheck(const char *, const char *)
 423                 __format_arg(2);
 424 __END_DECLS
 425
 426 /*
 427  * Stdio function-access interface.
 428  */
 429 __BEGIN_DECLS
 430 FILE    *funopen(const void *,
 431     int (*)(void *, char *, int),
 432     int (*)(void *, const char *, int),
 433     off_t (*)(void *, off_t, int),
 434     int (*)(void *));
 435 FILE    *funopen2(const void *,
 436     ssize_t (*)(void *, void *, size_t),
 437     ssize_t (*)(void *, const void *, size_t),
 438     off_t (*)(void *, off_t, int),
 439     int (*)(void *),
 440     int (*)(void *));
 441 __END_DECLS
 442 #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
 443 #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
 444 #define fropen2(cookie, fn) funopen2(cookie, fn, 0, 0, 0, 0)
 445 #define fwopen2(cookie, fn) funopen2(cookie, 0, fn, 0, 0, 0)
 446 #endif /* _NETBSD_SOURCE */
 447
 448 /*
 449  * Functions internal to the implementation.
 450  */
 451 __BEGIN_DECLS
 452 int     __srget(FILE *);
 453 int     __swbuf(int, FILE *);
 454 __END_DECLS
 455
 456 /*
 457  * The __sfoo macros are here so that we can
 458  * define function versions in the C library.
 459  */
 460 #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
 461 #if defined(__GNUC__) && defined(__STDC__)
 462 static __inline int __sputc(int _c, FILE *_p) {
 463         if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
 464                 return (*_p->_p++ = _c);
 465         else
 466                 return (__swbuf(_c, _p));
 467 }
 468 #else
 469 /*
 470  * This has been tuned to generate reasonable code on the vax using pcc.
 471  */
 472 #define __sputc(c, p) \
 473         (--(p)->_w < 0 ? \
 474                 (p)->_w >= (p)->_lbfsize ? \
 475                         (*(p)->_p = (c)), *(p)->_p != '\n' ? \
 476                                 (int)*(p)->_p++ : \
 477                                 __swbuf('\n', p) : \
 478                         __swbuf((int)(c), p) : \
 479                 (*(p)->_p = (c), (int)*(p)->_p++))
 480 #endif
 481
 482 #define __sfeof(p)      (((p)->_flags & __SEOF) != 0)
 483 #define __sferror(p)    (((p)->_flags & __SERR) != 0)
 484 #define __sclearerr(p)  ((void)((p)->_flags &= ~(__SERR|__SEOF)))
 485 #define __sfileno(p)    \
 486     ((p)->_file == -1 ? -1 : (int)(unsigned short)(p)->_file)
 487
 488 #ifndef __lint__
 489 #if !defined(_REENTRANT) && !defined(_PTHREADS)
 490 #define feof(p)         __sfeof(p)
 491 #define ferror(p)       __sferror(p)
 492 #define clearerr(p)     __sclearerr(p)
 493
 494 #define getc(fp)        __sgetc(fp)
 495 #define putc(x, fp)     __sputc(x, fp)
 496 #endif /* !_REENTRANT && !_PTHREADS */
 497 #endif /* __lint__ */
 498
 499 #define getchar()       getc(stdin)
 500 #define putchar(x)      putc(x, stdout)
 501
 502 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
 503     defined(_NETBSD_SOURCE)
 504 #if !defined(_REENTRANT) && !defined(_PTHREADS)
 505 #define fileno(p)       __sfileno(p)
 506 #endif /* !_REENTRANT && !_PTHREADS */
 507 #endif /* !_ANSI_SOURCE */
 508
 509 #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
 510 int      vdprintf(int, const char * __restrict, __va_list)
 511                 __printflike(2, 0);
 512 int      dprintf(int, const char * __restrict, ...)
 513                 __printflike(2, 3);
 514 #endif /* (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) */
 515
 516 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
 517     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
 518 #define getc_unlocked(fp)       __sgetc(fp)
 519 #define putc_unlocked(x, fp)    __sputc(x, fp)
 520
 521 #define getchar_unlocked()      getc_unlocked(stdin)
 522 #define putchar_unlocked(x)     putc_unlocked(x, stdout)
 523 #endif /* _POSIX_C_SOURCE >= 199506 || _XOPEN_SOURCE >= 500 || _REENTRANT... */
 524
 525 #if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0) >= 700 || \
 526     defined(_NETBSD_SOURCE)
 527 FILE *fmemopen(void * __restrict, size_t, const char * __restrict);
 528 #endif
 529
 530 #if _FORTIFY_SOURCE > 0
 531 #include <ssp/stdio.h>
 532 #endif
 533
 534 #endif /* _STDIO_H_ */