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 #include <sys/stdio.h>
  76
  77 typedef __darwin_off_t          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 /* hold a buncha junk that would grow the ABI */
  94 struct __sFILEX;
  95
  96 /*
  97  * stdio state variables.
  98  *
  99  * The following always hold:
 100  *
 101  *      if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
 102  *              _lbfsize is -_bf._size, else _lbfsize is 0
 103  *      if _flags&__SRD, _w is 0
 104  *      if _flags&__SWR, _r is 0
 105  *
 106  * This ensures that the getc and putc macros (or inline functions) never
 107  * try to write or read from a file that is in `read' or `write' mode.
 108  * (Moreover, they can, and do, automatically switch from read mode to
 109  * write mode, and back, on "r+" and "w+" files.)
 110  *
 111  * _lbfsize is used only to make the inline line-buffered output stream
 112  * code as compact as possible.
 113  *
 114  * _ub, _up, and _ur are used when ungetc() pushes back more characters
 115  * than fit in the current _bf, or when ungetc() pushes back a character
 116  * that does not match the previous one in _bf.  When this happens,
 117  * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
 118  * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
 119  *
 120  * NB: see WARNING above before changing the layout of this structure!
 121  */
 122 typedef struct __sFILE {
 123         unsigned char *_p;      /* current position in (some) buffer */
 124         int     _r;             /* read space left for getc() */
 125         int     _w;             /* write space left for putc() */
 126         short   _flags;         /* flags, below; this FILE is free if 0 */
 127         short   _file;          /* fileno, if Unix descriptor, else -1 */
 128         struct  __sbuf _bf;     /* the buffer (at least 1 byte, if !NULL) */
 129         int     _lbfsize;       /* 0 or -_bf._size, for inline putc */
 130
 131         /* operations */
 132         void    *_cookie;       /* cookie passed to io functions */
 133         int     (*_close)(void *);
 134         int     (*_read) (void *, char *, int);
 135         fpos_t  (*_seek) (void *, fpos_t, int);
 136         int     (*_write)(void *, const char *, int);
 137
 138         /* separate buffer for long sequences of ungetc() */
 139         struct  __sbuf _ub;     /* ungetc buffer */
 140         struct __sFILEX *_extra; /* additions to FILE to not break ABI */
 141         int     _ur;            /* saved _r when _r is counting ungetc data */
 142
 143         /* tricks to meet minimum requirements even when malloc() fails */
 144         unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
 145         unsigned char _nbuf[1]; /* guarantee a getc() buffer */
 146
 147         /* separate buffer for fgetln() when line crosses buffer boundary */
 148         struct  __sbuf _lb;     /* buffer for fgetln() */
 149
 150         /* Unix stdio files get aligned to block boundaries on fseek() */
 151         int     _blksize;       /* stat.st_blksize (may be != _bf._size) */
 152         fpos_t  _offset;        /* current lseek offset (see WARNING) */
 153 } FILE;
 154
 155 __BEGIN_DECLS
 156 extern FILE *__stdinp;
 157 extern FILE *__stdoutp;
 158 extern FILE *__stderrp;
 159 __END_DECLS
 160
 161 #define __SLBF  0x0001          /* line buffered */
 162 #define __SNBF  0x0002          /* unbuffered */
 163 #define __SRD   0x0004          /* OK to read */
 164 #define __SWR   0x0008          /* OK to write */
 165         /* RD and WR are never simultaneously asserted */
 166 #define __SRW   0x0010          /* open for reading & writing */
 167 #define __SEOF  0x0020          /* found EOF */
 168 #define __SERR  0x0040          /* found error */
 169 #define __SMBF  0x0080          /* _buf is from malloc */
 170 #define __SAPP  0x0100          /* fdopen()ed in append mode */
 171 #define __SSTR  0x0200          /* this is an sprintf/snprintf string */
 172 #define __SOPT  0x0400          /* do fseek() optimisation */
 173 #define __SNPT  0x0800          /* do not do fseek() optimisation */
 174 #define __SOFF  0x1000          /* set iff _offset is in fact correct */
 175 #define __SMOD  0x2000          /* true => fgetln modified _p text */
 176 #define __SALC  0x4000          /* allocate string space dynamically */
 177 #define __SIGN  0x8000          /* ignore this file in _fwalk */
 178
 179 /*
 180  * The following three definitions are for ANSI C, which took them
 181  * from System V, which brilliantly took internal interface macros and
 182  * made them official arguments to setvbuf(), without renaming them.
 183  * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
 184  *
 185  * Although numbered as their counterparts above, the implementation
 186  * does not rely on this.
 187  */
 188 #define _IOFBF  0               /* setvbuf should set fully buffered */
 189 #define _IOLBF  1               /* setvbuf should set line buffered */
 190 #define _IONBF  2               /* setvbuf should set unbuffered */
 191
 192 #define BUFSIZ  1024            /* size of buffer used by setbuf */
 193 #define EOF     (-1)
 194
 195                                 /* must be == _POSIX_STREAM_MAX <limits.h> */
 196 #define FOPEN_MAX       20      /* must be <= OPEN_MAX <sys/syslimits.h> */
 197 #define FILENAME_MAX    1024    /* must be <= PATH_MAX <sys/syslimits.h> */
 198
 199 /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
 200 #ifndef _ANSI_SOURCE
 201 #define P_tmpdir        "/var/tmp/"
 202 #endif
 203 #define L_tmpnam        1024    /* XXX must be == PATH_MAX */
 204 #define TMP_MAX         308915776
 205
 206 #ifndef SEEK_SET
 207 #define SEEK_SET        0       /* set file offset to offset */
 208 #endif
 209 #ifndef SEEK_CUR
 210 #define SEEK_CUR        1       /* set file offset to current plus offset */
 211 #endif
 212 #ifndef SEEK_END
 213 #define SEEK_END        2       /* set file offset to EOF plus offset */
 214 #endif
 215
 216 #define stdin   __stdinp
 217 #define stdout  __stdoutp
 218 #define stderr  __stderrp
 219
 220 #ifdef _DARWIN_UNLIMITED_STREAMS
 221 #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_3_2
 222 #error "_DARWIN_UNLIMITED_STREAMS specified, but -miphoneos-version-min version does not support it."
 223 #elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_6
 224 #error "_DARWIN_UNLIMITED_STREAMS specified, but -mmacosx-version-min version does not support it."
 225 #endif
 226 #endif
 227
 228 /* ANSI-C */
 229
 230 __BEGIN_DECLS
 231 void     clearerr(FILE *);
 232 int      fclose(FILE *);
 233 int      feof(FILE *);
 234 int      ferror(FILE *);
 235 int      fflush(FILE *);
 236 int      fgetc(FILE *);
 237 int      fgetpos(FILE * __restrict, fpos_t *);
 238 char    *fgets(char * __restrict, int, FILE *);
 239 #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
 240 FILE    *fopen(const char * __restrict, const char * __restrict) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 241 #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
 242 //Begin-Libc
 243 #ifndef LIBC_ALIAS_FOPEN
 244 //End-Libc
 245 FILE    *fopen(const char * __restrict, const char * __restrict) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fopen));
 246 //Begin-Libc
 247 #else /* LIBC_ALIAS_FOPEN */
 248 FILE    *fopen(const char * __restrict, const char * __restrict) LIBC_ALIAS(fopen);
 249 #endif /* !LIBC_ALIAS_FOPEN */
 250 //End-Libc
 251 #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
 252 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 253 int      fputc(int, FILE *);
 254 //Begin-Libc
 255 #ifndef LIBC_ALIAS_FPUTS
 256 //End-Libc
 257 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
 258 //Begin-Libc
 259 #else /* LIBC_ALIAS_FPUTS */
 260 int      fputs(const char * __restrict, FILE * __restrict) LIBC_ALIAS(fputs);
 261 #endif /* !LIBC_ALIAS_FPUTS */
 262 //End-Libc
 263 size_t   fread(void * __restrict, size_t, size_t, FILE * __restrict);
 264 //Begin-Libc
 265 #ifndef LIBC_ALIAS_FREOPEN
 266 //End-Libc
 267 FILE    *freopen(const char * __restrict, const char * __restrict,
 268                  FILE * __restrict) __DARWIN_ALIAS(freopen);
 269 //Begin-Libc
 270 #else /* LIBC_ALIAS_FREOPEN */
 271 FILE    *freopen(const char * __restrict, const char * __restrict,
 272                  FILE * __restrict) LIBC_ALIAS(freopen);
 273 #endif /* !LIBC_ALIAS_FREOPEN */
 274 //End-Libc
 275 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 276 int      fseek(FILE *, long, int);
 277 int      fsetpos(FILE *, const fpos_t *);
 278 long     ftell(FILE *);
 279 //Begin-Libc
 280 #ifndef LIBC_ALIAS_FWRITE
 281 //End-Libc
 282 size_t   fwrite(const void * __restrict, size_t, size_t, FILE * __restrict) __DARWIN_ALIAS(fwrite);
 283 //Begin-Libc
 284 #else /* LIBC_ALIAS_FWRITE */
 285 size_t   fwrite(const void * __restrict, size_t, size_t, FILE * __restrict) LIBC_ALIAS(fwrite);
 286 #endif /* !LIBC_ALIAS_FWRITE */
 287 //End-Libc
 288 int      getc(FILE *);
 289 int      getchar(void);
 290 char    *gets(char *);
 291 void     perror(const char *);
 292 int      printf(const char * __restrict, ...) __printflike(1, 2);
 293 int      putc(int, FILE *);
 294 int      putchar(int);
 295 int      puts(const char *);
 296 int      remove(const char *);
 297 int      rename (const char *, const char *);
 298 void     rewind(FILE *);
 299 int      scanf(const char * __restrict, ...) __scanflike(1, 2);
 300 void     setbuf(FILE * __restrict, char * __restrict);
 301 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
 302 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3);
 303 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 304 FILE    *tmpfile(void);
 305
 306 #if !defined(_POSIX_C_SOURCE)
 307 __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.")
 308 #endif
 309 char    *tmpnam(char *);
 310 int      ungetc(int, FILE *);
 311 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 312 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
 313 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 314 __END_DECLS
 315
 316
 317
 318 /* Additional functionality provided by:
 319  * POSIX.1-1988
 320  */
 321
 322 #if __DARWIN_C_LEVEL >= 198808L
 323 #define L_ctermid       1024    /* size for ctermid(); PATH_MAX */
 324
 325 __BEGIN_DECLS
 326 #ifndef __CTERMID_DEFINED
 327 /* Multiply defined in stdio.h and unistd.h by SUS */
 328 #define __CTERMID_DEFINED 1
 329 char    *ctermid(char *);
 330 #endif
 331
 332 #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
 333 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
 334 #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
 335 //Begin-Libc
 336 #ifndef LIBC_ALIAS_FDOPEN
 337 //End-Libc
 338 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fdopen));
 339 //Begin-Libc
 340 #else /* LIBC_ALIAS_FDOPEN */
 341 FILE    *fdopen(int, const char *) LIBC_ALIAS(fdopen);
 342 #endif /* !LIBC_ALIAS_FDOPEN */
 343 //End-Libc
 344 #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
 345 int      fileno(FILE *);
 346 __END_DECLS
 347 #endif /* __DARWIN_C_LEVEL >= 198808L */
 348
 349
 350 /* Additional functionality provided by:
 351  * POSIX.2-1992 C Language Binding Option
 352  */
 353
 354 #if __DARWIN_C_LEVEL >= 199209L
 355 __BEGIN_DECLS
 356 int      pclose(FILE *);
 357 #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
 358 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen));
 359 #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
 360 //Begin-Libc
 361 #ifndef LIBC_ALIAS_POPEN
 362 //End-Libc
 363 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(popen));
 364 //Begin-Libc
 365 #else /* LIBC_ALIAS_POPEN */
 366 FILE    *popen(const char *, const char *) LIBC_ALIAS(popen);
 367 #endif /* !LIBC_ALIAS_POPEN */
 368 //End-Libc
 369 #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
 370 __END_DECLS
 371 #endif /* __DARWIN_C_LEVEL >= 199209L */
 372
 373
 374
 375
 376 /* Additional functionality provided by:
 377  * POSIX.1c-1995,
 378  * POSIX.1i-1995,
 379  * and the omnibus ISO/IEC 9945-1: 1996
 380  */
 381
 382 #if __DARWIN_C_LEVEL >= 199506L
 383
 384 /* Functions internal to the implementation. */
 385 __BEGIN_DECLS
 386 int     __srget(FILE *);
 387 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 388 int     __swbuf(int, FILE *);
 389 __END_DECLS
 390
 391 /*
 392  * The __sfoo macros are here so that we can
 393  * define function versions in the C library.
 394  */
 395 #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
 396 #if defined(__GNUC__) && defined(__STDC__)
 397 __header_always_inline int __sputc(int _c, FILE *_p) {
 398         if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
 399                 return (*_p->_p++ = _c);
 400         else
 401                 return (__swbuf(_c, _p));
 402 }
 403 #else
 404 /*
 405  * This has been tuned to generate reasonable code on the vax using pcc.
 406  */
 407 #define __sputc(c, p) \
 408         (--(p)->_w < 0 ? \
 409                 (p)->_w >= (p)->_lbfsize ? \
 410                         (*(p)->_p = (c)), *(p)->_p != '\n' ? \
 411                                 (int)*(p)->_p++ : \
 412                                 __swbuf('\n', p) : \
 413                         __swbuf((int)(c), p) : \
 414                 (*(p)->_p = (c), (int)*(p)->_p++))
 415 #endif
 416
 417 #define __sfeof(p)      (((p)->_flags & __SEOF) != 0)
 418 #define __sferror(p)    (((p)->_flags & __SERR) != 0)
 419 #define __sclearerr(p)  ((void)((p)->_flags &= ~(__SERR|__SEOF)))
 420 #define __sfileno(p)    ((p)->_file)
 421
 422 __BEGIN_DECLS
 423 void     flockfile(FILE *);
 424 int      ftrylockfile(FILE *);
 425 void     funlockfile(FILE *);
 426 int      getc_unlocked(FILE *);
 427 int      getchar_unlocked(void);
 428 int      putc_unlocked(int, FILE *);
 429 int      putchar_unlocked(int);
 430
 431 /* Removed in Issue 6 */
 432 #if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200112L
 433 int      getw(FILE *);
 434 int      putw(int, FILE *);
 435 #endif
 436
 437 #if !defined(_POSIX_C_SOURCE)
 438 __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.")
 439 #endif
 440 //Begin-Libc
 441 #ifndef LIBC_ALIAS_TEMPNAM
 442 //End-Libc
 443 char    *tempnam(const char *, const char *) __DARWIN_ALIAS(tempnam);
 444 //Begin-Libc
 445 #else /* LIBC_ALIAS_TEMPNAM */
 446 char    *tempnam(const char *, const char *) LIBC_ALIAS(tempnam);
 447 #endif /* !LIBC_ALIAS_TEMPNAM */
 448 //End-Libc
 449 __END_DECLS
 450
 451 #ifndef lint
 452 #define getc_unlocked(fp)       __sgetc(fp)
 453 #define putc_unlocked(x, fp)    __sputc(x, fp)
 454 #endif /* lint */
 455
 456 #define getchar_unlocked()      getc_unlocked(stdin)
 457 #define putchar_unlocked(x)     putc_unlocked(x, stdout)
 458 #endif /* __DARWIN_C_LEVEL >= 199506L */
 459
 460
 461
 462 /* Additional functionality provided by:
 463  * POSIX.1-2001
 464  * ISO C99
 465  */
 466
 467 #if __DARWIN_C_LEVEL >= 200112L
 468 #include <sys/_types/_off_t.h>
 469
 470 __BEGIN_DECLS
 471 int      fseeko(FILE *, off_t, int);
 472 off_t    ftello(FILE *);
 473 __END_DECLS
 474 #endif /* __DARWIN_C_LEVEL >= 200112L */
 475
 476 #if __DARWIN_C_LEVEL >= 200112L || defined(_C99_SOURCE) || defined(__cplusplus)
 477 __BEGIN_DECLS
 478 int      snprintf(char * __restrict, size_t, const char * __restrict, ...) __printflike(3, 4);
 479 int      vfscanf(FILE * __restrict, const char * __restrict, va_list) __scanflike(2, 0);
 480 int      vscanf(const char * __restrict, va_list) __scanflike(1, 0);
 481 int      vsnprintf(char * __restrict, size_t, const char * __restrict, va_list) __printflike(3, 0);
 482 int      vsscanf(const char * __restrict, const char * __restrict, va_list) __scanflike(2, 0);
 483 __END_DECLS
 484 #endif /* __DARWIN_C_LEVEL >= 200112L || defined(_C99_SOURCE) || defined(__cplusplus) */
 485
 486
 487
 488 /* Additional functionality provided by:
 489  * POSIX.1-2008
 490  */
 491
 492 #if __DARWIN_C_LEVEL >= 200809L
 493 #include <sys/_types/_ssize_t.h>
 494
 495 __BEGIN_DECLS
 496 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 497 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 498 ssize_t getdelim(char ** __restrict, size_t * __restrict, int, FILE * __restrict) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 499 ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 500 __END_DECLS
 501 #endif /* __DARWIN_C_LEVEL >= 200809L */
 502
 503
 504
 505 /* Darwin extensions */
 506
 507 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 508 __BEGIN_DECLS
 509 extern __const int sys_nerr;            /* perror(3) external variables */
 510 extern __const char *__const sys_errlist[];
 511
 512 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 513 char    *ctermid_r(char *);
 514 char    *fgetln(FILE *, size_t *);
 515 __const char *fmtcheck(const char *, const char *);
 516 int      fpurge(FILE *);
 517 void     setbuffer(FILE *, char *, int);
 518 int      setlinebuf(FILE *);
 519 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
 520 FILE    *zopen(const char *, const char *, int);
 521
 522
 523 /*
 524  * Stdio function-access interface.
 525  */
 526 FILE    *funopen(const void *,
 527                  int (*)(void *, char *, int),
 528                  int (*)(void *, const char *, int),
 529                  fpos_t (*)(void *, fpos_t, int),
 530                  int (*)(void *));
 531 __END_DECLS
 532 #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
 533 #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
 534
 535 #define feof_unlocked(p)        __sfeof(p)
 536 #define ferror_unlocked(p)      __sferror(p)
 537 #define clearerr_unlocked(p)    __sclearerr(p)
 538 #define fileno_unlocked(p)      __sfileno(p)
 539
 540 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 541
 542
 543 #ifdef _USE_EXTENDED_LOCALES_
 544 #include <xlocale/_stdio.h>
 545 #endif /* _USE_EXTENDED_LOCALES_ */
 546
 547 #if defined (__GNUC__) && _FORTIFY_SOURCE > 0 && !defined (__cplusplus)
 548 /* Security checking functions.  */
 549 #include <secure/_stdio.h>
 550 #endif
 551
 552 #endif /* _STDIO_H_ */