include/stdio.h

   1 /*
   2  * Copyright (c) 2000, 2005, 2007, 2009, 2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*-
  24  * Copyright (c) 1990, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Chris Torek.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)stdio.h     8.5 (Berkeley) 4/29/95
  59  */
  60
  61 #ifndef _STDIO_H_
  62 #define _STDIO_H_
  63
  64 #include <sys/cdefs.h>
  65 #include <Availability.h>
  66
  67 #include <_types.h>
  68
  69 /* DO NOT REMOVE THIS COMMENT: fixincludes needs to see:
  70  * __gnuc_va_list and include <stdarg.h> */
  71 #include <sys/_types/_va_list.h>
  72 #include <sys/_types/_size_t.h>
  73 #include <sys/_types/_null.h>
  74
  75 typedef __darwin_off_t          fpos_t;
  76
  77 #define _FSTDIO                 /* Define for new stdio with functions. */
  78
  79 /*
  80  * NB: to fit things in six character monocase externals, the stdio
  81  * code uses the prefix `__s' for stdio objects, typically followed
  82  * by a three-character attempt at a mnemonic.
  83  */
  84
  85 /* stdio buffers */
  86 struct __sbuf {
  87         unsigned char   *_base;
  88         int             _size;
  89 };
  90
  91 /* hold a buncha junk that would grow the ABI */
  92 struct __sFILEX;
  93
  94 /*
  95  * stdio state variables.
  96  *
  97  * The following always hold:
  98  *
  99  *      if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
 100  *              _lbfsize is -_bf._size, else _lbfsize is 0
 101  *      if _flags&__SRD, _w is 0
 102  *      if _flags&__SWR, _r is 0
 103  *
 104  * This ensures that the getc and putc macros (or inline functions) never
 105  * try to write or read from a file that is in `read' or `write' mode.
 106  * (Moreover, they can, and do, automatically switch from read mode to
 107  * write mode, and back, on "r+" and "w+" files.)
 108  *
 109  * _lbfsize is used only to make the inline line-buffered output stream
 110  * code as compact as possible.
 111  *
 112  * _ub, _up, and _ur are used when ungetc() pushes back more characters
 113  * than fit in the current _bf, or when ungetc() pushes back a character
 114  * that does not match the previous one in _bf.  When this happens,
 115  * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
 116  * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
 117  *
 118  * NB: see WARNING above before changing the layout of this structure!
 119  */
 120 typedef struct __sFILE {
 121         unsigned char *_p;      /* current position in (some) buffer */
 122         int     _r;             /* read space left for getc() */
 123         int     _w;             /* write space left for putc() */
 124         short   _flags;         /* flags, below; this FILE is free if 0 */
 125         short   _file;          /* fileno, if Unix descriptor, else -1 */
 126         struct  __sbuf _bf;     /* the buffer (at least 1 byte, if !NULL) */
 127         int     _lbfsize;       /* 0 or -_bf._size, for inline putc */
 128
 129         /* operations */
 130         void    *_cookie;       /* cookie passed to io functions */
 131         int     (*_close)(void *);
 132         int     (*_read) (void *, char *, int);
 133         fpos_t  (*_seek) (void *, fpos_t, int);
 134         int     (*_write)(void *, const char *, int);
 135
 136         /* separate buffer for long sequences of ungetc() */
 137         struct  __sbuf _ub;     /* ungetc buffer */
 138         struct __sFILEX *_extra; /* additions to FILE to not break ABI */
 139         int     _ur;            /* saved _r when _r is counting ungetc data */
 140
 141         /* tricks to meet minimum requirements even when malloc() fails */
 142         unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
 143         unsigned char _nbuf[1]; /* guarantee a getc() buffer */
 144
 145         /* separate buffer for fgetln() when line crosses buffer boundary */
 146         struct  __sbuf _lb;     /* buffer for fgetln() */
 147
 148         /* Unix stdio files get aligned to block boundaries on fseek() */
 149         int     _blksize;       /* stat.st_blksize (may be != _bf._size) */
 150         fpos_t  _offset;        /* current lseek offset (see WARNING) */
 151 } FILE;
 152
 153 __BEGIN_DECLS
 154 extern FILE *__stdinp;
 155 extern FILE *__stdoutp;
 156 extern FILE *__stderrp;
 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() optimisation */
 171 #define __SNPT  0x0800          /* do not do fseek() optimisation */
 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 #define __SIGN  0x8000          /* ignore this file in _fwalk */
 176
 177 /*
 178  * The following three definitions are for ANSI C, which took them
 179  * from System V, which brilliantly took internal interface macros and
 180  * made them official arguments to setvbuf(), without renaming them.
 181  * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
 182  *
 183  * Although numbered as their counterparts above, the implementation
 184  * does not rely on this.
 185  */
 186 #define _IOFBF  0               /* setvbuf should set fully buffered */
 187 #define _IOLBF  1               /* setvbuf should set line buffered */
 188 #define _IONBF  2               /* setvbuf should set unbuffered */
 189
 190 #define BUFSIZ  1024            /* size of buffer used by setbuf */
 191 #define EOF     (-1)
 192
 193                                 /* must be == _POSIX_STREAM_MAX <limits.h> */
 194 #define FOPEN_MAX       20      /* must be <= OPEN_MAX <sys/syslimits.h> */
 195 #define FILENAME_MAX    1024    /* must be <= PATH_MAX <sys/syslimits.h> */
 196
 197 /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
 198 #ifndef _ANSI_SOURCE
 199 #define P_tmpdir        "/var/tmp/"
 200 #endif
 201 #define L_tmpnam        1024    /* XXX must be == PATH_MAX */
 202 #define TMP_MAX         308915776
 203
 204 #ifndef SEEK_SET
 205 #define SEEK_SET        0       /* set file offset to offset */
 206 #endif
 207 #ifndef SEEK_CUR
 208 #define SEEK_CUR        1       /* set file offset to current plus offset */
 209 #endif
 210 #ifndef SEEK_END
 211 #define SEEK_END        2       /* set file offset to EOF plus offset */
 212 #endif
 213
 214 #define stdin   __stdinp
 215 #define stdout  __stdoutp
 216 #define stderr  __stderrp
 217
 218 #ifdef _DARWIN_UNLIMITED_STREAMS
 219 #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_3_2
 220 #error "_DARWIN_UNLIMITED_STREAMS specified, but -miphoneos-version-min version does not support it."
 221 #elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_6
 222 #error "_DARWIN_UNLIMITED_STREAMS specified, but -mmacosx-version-min version does not support it."
 223 #endif
 224 #endif
 225
 226 /* ANSI-C */
 227
 228 __BEGIN_DECLS
 229 void     clearerr(FILE *);
 230 int      fclose(FILE *);
 231 int      feof(FILE *);
 232 int      ferror(FILE *);
 233 int      fflush(FILE *);
 234 int      fgetc(FILE *);
 235 int      fgetpos(FILE * __restrict, fpos_t *);
 236 char    *fgets(char * __restrict, int, FILE *);
 237 #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
 238 FILE    *fopen(const char * __restrict, const char * __restrict) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 239 #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
 240 //Begin-Libc
 241 #ifndef LIBC_ALIAS_FOPEN
 242 //End-Libc
 243 FILE    *fopen(const char * __restrict, const char * __restrict) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fopen));
 244 //Begin-Libc
 245 #else /* LIBC_ALIAS_FOPEN */
 246 FILE    *fopen(const char * __restrict, const char * __restrict) LIBC_ALIAS(fopen);
 247 #endif /* !LIBC_ALIAS_FOPEN */
 248 //End-Libc
 249 #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
 250 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 251 int      fputc(int, FILE *);
 252 //Begin-Libc
 253 #ifndef LIBC_ALIAS_FPUTS
 254 //End-Libc
 255 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
 256 //Begin-Libc
 257 #else /* LIBC_ALIAS_FPUTS */
 258 int      fputs(const char * __restrict, FILE * __restrict) LIBC_ALIAS(fputs);
 259 #endif /* !LIBC_ALIAS_FPUTS */
 260 //End-Libc
 261 size_t   fread(void * __restrict, size_t, size_t, FILE * __restrict);
 262 //Begin-Libc
 263 #ifndef LIBC_ALIAS_FREOPEN
 264 //End-Libc
 265 FILE    *freopen(const char * __restrict, const char * __restrict,
 266                  FILE * __restrict) __DARWIN_ALIAS(freopen);
 267 //Begin-Libc
 268 #else /* LIBC_ALIAS_FREOPEN */
 269 FILE    *freopen(const char * __restrict, const char * __restrict,
 270                  FILE * __restrict) LIBC_ALIAS(freopen);
 271 #endif /* !LIBC_ALIAS_FREOPEN */
 272 //End-Libc
 273 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 274 int      fseek(FILE *, long, int);
 275 int      fsetpos(FILE *, const fpos_t *);
 276 long     ftell(FILE *);
 277 //Begin-Libc
 278 #ifndef LIBC_ALIAS_FWRITE
 279 //End-Libc
 280 size_t   fwrite(const void * __restrict, size_t, size_t, FILE * __restrict) __DARWIN_ALIAS(fwrite);
 281 //Begin-Libc
 282 #else /* LIBC_ALIAS_FWRITE */
 283 size_t   fwrite(const void * __restrict, size_t, size_t, FILE * __restrict) LIBC_ALIAS(fwrite);
 284 #endif /* !LIBC_ALIAS_FWRITE */
 285 //End-Libc
 286 int      getc(FILE *);
 287 int      getchar(void);
 288 char    *gets(char *);
 289 void     perror(const char *);
 290 int      printf(const char * __restrict, ...) __printflike(1, 2);
 291 int      putc(int, FILE *);
 292 int      putchar(int);
 293 int      puts(const char *);
 294 int      remove(const char *);
 295 int      rename (const char *, const char *);
 296 void     rewind(FILE *);
 297 int      scanf(const char * __restrict, ...) __scanflike(1, 2);
 298 void     setbuf(FILE * __restrict, char * __restrict);
 299 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
 300 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3);
 301 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 302 FILE    *tmpfile(void);
 303
 304 #if !defined(_POSIX_C_SOURCE)
 305 __deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tmpnam(3), it is highly recommended that you use mkstemp(3) instead.")
 306 #endif
 307 char    *tmpnam(char *);
 308 int      ungetc(int, FILE *);
 309 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 310 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
 311 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 312 __END_DECLS
 313
 314
 315
 316 /* Additional functionality provided by:
 317  * POSIX.1-1988
 318  */
 319
 320 #if __DARWIN_C_LEVEL >= 198808L
 321 #define L_ctermid       1024    /* size for ctermid(); PATH_MAX */
 322
 323 __BEGIN_DECLS
 324 #ifndef __CTERMID_DEFINED
 325 /* Multiply defined in stdio.h and unistd.h by SUS */
 326 #define __CTERMID_DEFINED 1
 327 char    *ctermid(char *);
 328 #endif
 329
 330 #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
 331 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
 332 #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
 333 //Begin-Libc
 334 #ifndef LIBC_ALIAS_FDOPEN
 335 //End-Libc
 336 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fdopen));
 337 //Begin-Libc
 338 #else /* LIBC_ALIAS_FDOPEN */
 339 FILE    *fdopen(int, const char *) LIBC_ALIAS(fdopen);
 340 #endif /* !LIBC_ALIAS_FDOPEN */
 341 //End-Libc
 342 #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
 343 int      fileno(FILE *);
 344 __END_DECLS
 345 #endif /* __DARWIN_C_LEVEL >= 198808L */
 346
 347
 348 /* Additional functionality provided by:
 349  * POSIX.2-1992 C Language Binding Option
 350  */
 351
 352 #if __DARWIN_C_LEVEL >= 199209L
 353 __BEGIN_DECLS
 354 int      pclose(FILE *);
 355 #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
 356 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen));
 357 #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
 358 //Begin-Libc
 359 #ifndef LIBC_ALIAS_POPEN
 360 //End-Libc
 361 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(popen));
 362 //Begin-Libc
 363 #else /* LIBC_ALIAS_POPEN */
 364 FILE    *popen(const char *, const char *) LIBC_ALIAS(popen);
 365 #endif /* !LIBC_ALIAS_POPEN */
 366 //End-Libc
 367 #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
 368 __END_DECLS
 369 #endif /* __DARWIN_C_LEVEL >= 199209L */
 370
 371
 372
 373
 374 /* Additional functionality provided by:
 375  * POSIX.1c-1995,
 376  * POSIX.1i-1995,
 377  * and the omnibus ISO/IEC 9945-1: 1996
 378  */
 379
 380 #if __DARWIN_C_LEVEL >= 199506L
 381
 382 /* Functions internal to the implementation. */
 383 __BEGIN_DECLS
 384 int     __srget(FILE *);
 385 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 386 int     __swbuf(int, FILE *);
 387 __END_DECLS
 388
 389 /*
 390  * The __sfoo macros are here so that we can
 391  * define function versions in the C library.
 392  */
 393 #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
 394 #if defined(__GNUC__) && defined(__STDC__)
 395 __header_always_inline int __sputc(int _c, FILE *_p) {
 396         if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
 397                 return (*_p->_p++ = _c);
 398         else
 399                 return (__swbuf(_c, _p));
 400 }
 401 #else
 402 /*
 403  * This has been tuned to generate reasonable code on the vax using pcc.
 404  */
 405 #define __sputc(c, p) \
 406         (--(p)->_w < 0 ? \
 407                 (p)->_w >= (p)->_lbfsize ? \
 408                         (*(p)->_p = (c)), *(p)->_p != '\n' ? \
 409                                 (int)*(p)->_p++ : \
 410                                 __swbuf('\n', p) : \
 411                         __swbuf((int)(c), p) : \
 412                 (*(p)->_p = (c), (int)*(p)->_p++))
 413 #endif
 414
 415 #define __sfeof(p)      (((p)->_flags & __SEOF) != 0)
 416 #define __sferror(p)    (((p)->_flags & __SERR) != 0)
 417 #define __sclearerr(p)  ((void)((p)->_flags &= ~(__SERR|__SEOF)))
 418 #define __sfileno(p)    ((p)->_file)
 419
 420 __BEGIN_DECLS
 421 void     flockfile(FILE *);
 422 int      ftrylockfile(FILE *);
 423 void     funlockfile(FILE *);
 424 int      getc_unlocked(FILE *);
 425 int      getchar_unlocked(void);
 426 int      putc_unlocked(int, FILE *);
 427 int      putchar_unlocked(int);
 428
 429 /* Removed in Issue 6 */
 430 #if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200112L
 431 int      getw(FILE *);
 432 int      putw(int, FILE *);
 433 #endif
 434
 435 #if !defined(_POSIX_C_SOURCE)
 436 __deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tempnam(3), it is highly recommended that you use mkstemp(3) instead.")
 437 #endif
 438 //Begin-Libc
 439 #ifndef LIBC_ALIAS_TEMPNAM
 440 //End-Libc
 441 char    *tempnam(const char *, const char *) __DARWIN_ALIAS(tempnam);
 442 //Begin-Libc
 443 #else /* LIBC_ALIAS_TEMPNAM */
 444 char    *tempnam(const char *, const char *) LIBC_ALIAS(tempnam);
 445 #endif /* !LIBC_ALIAS_TEMPNAM */
 446 //End-Libc
 447 __END_DECLS
 448
 449 #ifndef lint
 450 #define getc_unlocked(fp)       __sgetc(fp)
 451 #define putc_unlocked(x, fp)    __sputc(x, fp)
 452 #endif /* lint */
 453
 454 #define getchar_unlocked()      getc_unlocked(stdin)
 455 #define putchar_unlocked(x)     putc_unlocked(x, stdout)
 456 #endif /* __DARWIN_C_LEVEL >= 199506L */
 457
 458
 459
 460 /* Additional functionality provided by:
 461  * POSIX.1-2001
 462  * ISO C99
 463  */
 464
 465 #if __DARWIN_C_LEVEL >= 200112L
 466 #include <sys/_types/_off_t.h>
 467
 468 __BEGIN_DECLS
 469 int      fseeko(FILE *, off_t, int);
 470 off_t    ftello(FILE *);
 471 __END_DECLS
 472 #endif /* __DARWIN_C_LEVEL >= 200112L */
 473
 474 #if __DARWIN_C_LEVEL >= 200112L || defined(_C99_SOURCE) || defined(__cplusplus)
 475 __BEGIN_DECLS
 476 int      snprintf(char * __restrict, size_t, const char * __restrict, ...) __printflike(3, 4);
 477 int      vfscanf(FILE * __restrict, const char * __restrict, va_list) __scanflike(2, 0);
 478 int      vscanf(const char * __restrict, va_list) __scanflike(1, 0);
 479 int      vsnprintf(char * __restrict, size_t, const char * __restrict, va_list) __printflike(3, 0);
 480 int      vsscanf(const char * __restrict, const char * __restrict, va_list) __scanflike(2, 0);
 481 __END_DECLS
 482 #endif /* __DARWIN_C_LEVEL >= 200112L || defined(_C99_SOURCE) || defined(__cplusplus) */
 483
 484
 485
 486 /* Additional functionality provided by:
 487  * POSIX.1-2008
 488  */
 489
 490 #if __DARWIN_C_LEVEL >= 200809L
 491 #include <sys/_types/_ssize_t.h>
 492
 493 __BEGIN_DECLS
 494 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 495 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 496 ssize_t getdelim(char ** __restrict, size_t * __restrict, int, FILE * __restrict) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 497 ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 498 __END_DECLS
 499 #endif /* __DARWIN_C_LEVEL >= 200809L */
 500
 501
 502
 503 /* Darwin extensions */
 504
 505 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 506 __BEGIN_DECLS
 507 extern __const int sys_nerr;            /* perror(3) external variables */
 508 extern __const char *__const sys_errlist[];
 509
 510 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 511 char    *ctermid_r(char *);
 512 char    *fgetln(FILE *, size_t *);
 513 __const char *fmtcheck(const char *, const char *);
 514 int      fpurge(FILE *);
 515 void     setbuffer(FILE *, char *, int);
 516 int      setlinebuf(FILE *);
 517 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
 518 FILE    *zopen(const char *, const char *, int);
 519
 520
 521 /*
 522  * Stdio function-access interface.
 523  */
 524 FILE    *funopen(const void *,
 525                  int (*)(void *, char *, int),
 526                  int (*)(void *, const char *, int),
 527                  fpos_t (*)(void *, fpos_t, int),
 528                  int (*)(void *));
 529 __END_DECLS
 530 #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
 531 #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
 532
 533 #define feof_unlocked(p)        __sfeof(p)
 534 #define ferror_unlocked(p)      __sferror(p)
 535 #define clearerr_unlocked(p)    __sclearerr(p)
 536 #define fileno_unlocked(p)      __sfileno(p)
 537
 538 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 539
 540
 541 #ifdef _USE_EXTENDED_LOCALES_
 542 #include <xlocale/_stdio.h>
 543 #endif /* _USE_EXTENDED_LOCALES_ */
 544
 545 #if defined (__GNUC__) && _FORTIFY_SOURCE > 0 && !defined (__cplusplus)
 546 /* Security checking functions.  */
 547 #include <secure/_stdio.h>
 548 #endif
 549
 550 #endif /* _STDIO_H_ */