stdio.h revision 247411
11539Srgrimes/*- 21539Srgrimes * Copyright (c) 1990, 1993 31539Srgrimes * The Regents of the University of California. All rights reserved. 41539Srgrimes * 51539Srgrimes * This code is derived from software contributed to Berkeley by 61539Srgrimes * Chris Torek. 71539Srgrimes * 81539Srgrimes * Redistribution and use in source and binary forms, with or without 91539Srgrimes * modification, are permitted provided that the following conditions 101539Srgrimes * are met: 111539Srgrimes * 1. Redistributions of source code must retain the above copyright 121539Srgrimes * notice, this list of conditions and the following disclaimer. 131539Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141539Srgrimes * notice, this list of conditions and the following disclaimer in the 151539Srgrimes * documentation and/or other materials provided with the distribution. 16203964Simp * 3. Neither the name of the University nor the names of its contributors 171539Srgrimes * may be used to endorse or promote products derived from this software 181539Srgrimes * without specific prior written permission. 191539Srgrimes * 201539Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211539Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221539Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231539Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241539Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251539Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261539Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271539Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281539Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291539Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301539Srgrimes * SUCH DAMAGE. 311539Srgrimes * 3223655Speter * @(#)stdio.h 8.5 (Berkeley) 4/29/95 3350473Speter * $FreeBSD: head/include/stdio.h 247411 2013-02-27 19:50:46Z jhb $ 341539Srgrimes */ 351539Srgrimes 361539Srgrimes#ifndef _STDIO_H_ 371539Srgrimes#define _STDIO_H_ 381539Srgrimes 391539Srgrimes#include <sys/cdefs.h> 40123257Smarcel#include <sys/_null.h> 41102227Smike#include <sys/_types.h> 421539Srgrimes 43104585Smiketypedef __off_t fpos_t; 44104585Smike 45102227Smike#ifndef _SIZE_T_DECLARED 46102227Smiketypedef __size_t size_t; 47102227Smike#define _SIZE_T_DECLARED 481539Srgrimes#endif 491539Srgrimes 50189136Sdas#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 51189136Sdas#ifndef _OFF_T_DECLARED 52189136Sdas#define _OFF_T_DECLARED 53189136Sdastypedef __off_t off_t; 54189136Sdas#endif 55189136Sdas#ifndef _SSIZE_T_DECLARED 56189136Sdas#define _SSIZE_T_DECLARED 57189136Sdastypedef __ssize_t ssize_t; 58189136Sdas#endif 59189136Sdas#endif 60189136Sdas 61104585Smike#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE 62104585Smike#ifndef _VA_LIST_DECLARED 63104585Smiketypedef __va_list va_list; 64104585Smike#define _VA_LIST_DECLARED 65104585Smike#endif 66104585Smike#endif 67104585Smike 681539Srgrimes#define _FSTDIO /* Define for new stdio with functions. */ 691539Srgrimes 70178778Sjhb/* 71178778Sjhb * NB: to fit things in six character monocase externals, the stdio 72178778Sjhb * code uses the prefix `__s' for stdio objects, typically followed 73178778Sjhb * by a three-character attempt at a mnemonic. 74178778Sjhb */ 751539Srgrimes 76178778Sjhb/* stdio buffers */ 77178778Sjhbstruct __sbuf { 78178778Sjhb unsigned char *_base; 79178778Sjhb int _size; 80178778Sjhb}; 81178778Sjhb 82178778Sjhb/* 83178778Sjhb * stdio state variables. 84178778Sjhb * 85178778Sjhb * The following always hold: 86178778Sjhb * 87178778Sjhb * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), 88178778Sjhb * _lbfsize is -_bf._size, else _lbfsize is 0 89178778Sjhb * if _flags&__SRD, _w is 0 90178778Sjhb * if _flags&__SWR, _r is 0 91178778Sjhb * 92178778Sjhb * This ensures that the getc and putc macros (or inline functions) never 93178778Sjhb * try to write or read from a file that is in `read' or `write' mode. 94178778Sjhb * (Moreover, they can, and do, automatically switch from read mode to 95178778Sjhb * write mode, and back, on "r+" and "w+" files.) 96178778Sjhb * 97178778Sjhb * _lbfsize is used only to make the inline line-buffered output stream 98178778Sjhb * code as compact as possible. 99178778Sjhb * 100178778Sjhb * _ub, _up, and _ur are used when ungetc() pushes back more characters 101178778Sjhb * than fit in the current _bf, or when ungetc() pushes back a character 102178778Sjhb * that does not match the previous one in _bf. When this happens, 103178778Sjhb * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff 104178778Sjhb * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. 105178778Sjhb * 106178778Sjhb * Certain members of __sFILE are accessed directly via macros or 107178778Sjhb * inline functions. To preserve ABI compat, these members must not 108178778Sjhb * be disturbed. These members are marked below with (*). 109178778Sjhb */ 110227487Stheravenstruct __sFILE { 111178778Sjhb unsigned char *_p; /* (*) current position in (some) buffer */ 112178778Sjhb int _r; /* (*) read space left for getc() */ 113178778Sjhb int _w; /* (*) write space left for putc() */ 114178778Sjhb short _flags; /* (*) flags, below; this FILE is free if 0 */ 115178778Sjhb short _file; /* (*) fileno, if Unix descriptor, else -1 */ 116178829Sjhb struct __sbuf _bf; /* (*) the buffer (at least 1 byte, if !NULL) */ 117178778Sjhb int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */ 118178778Sjhb 119178778Sjhb /* operations */ 120178779Sjhb void *_cookie; /* (*) cookie passed to io functions */ 121178778Sjhb int (*_close)(void *); 122178778Sjhb int (*_read)(void *, char *, int); 123178778Sjhb fpos_t (*_seek)(void *, fpos_t, int); 124178778Sjhb int (*_write)(void *, const char *, int); 125178778Sjhb 126178778Sjhb /* separate buffer for long sequences of ungetc() */ 127178778Sjhb struct __sbuf _ub; /* ungetc buffer */ 128178778Sjhb unsigned char *_up; /* saved _p when _p is doing ungetc data */ 129178778Sjhb int _ur; /* saved _r when _r is counting ungetc data */ 130178778Sjhb 131178778Sjhb /* tricks to meet minimum requirements even when malloc() fails */ 132178778Sjhb unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ 133178778Sjhb unsigned char _nbuf[1]; /* guarantee a getc() buffer */ 134178778Sjhb 135178778Sjhb /* separate buffer for fgetln() when line crosses buffer boundary */ 136178778Sjhb struct __sbuf _lb; /* buffer for fgetln() */ 137178778Sjhb 138178778Sjhb /* Unix stdio files get aligned to block boundaries on fseek() */ 139178778Sjhb int _blksize; /* stat.st_blksize (may be != _bf._size) */ 140178778Sjhb fpos_t _offset; /* current lseek offset */ 141178778Sjhb 142178778Sjhb struct pthread_mutex *_fl_mutex; /* used for MT-safety */ 143178778Sjhb struct pthread *_fl_owner; /* current owner */ 144178778Sjhb int _fl_count; /* recursive lock count */ 145178778Sjhb int _orientation; /* orientation for fwide() */ 146178778Sjhb __mbstate_t _mbstate; /* multibyte conversion state */ 147227487Stheraven}; 148227487Stheraven#ifndef _STDFILE_DECLARED 149227487Stheraven#define _STDFILE_DECLARED 150227487Stheraventypedef struct __sFILE FILE; 151227487Stheraven#endif 152129774Stjr#ifndef _STDSTREAM_DECLARED 1531539Srgrimes__BEGIN_DECLS 15481600Speterextern FILE *__stdinp; 15581600Speterextern FILE *__stdoutp; 15681600Speterextern FILE *__stderrp; 1571539Srgrimes__END_DECLS 158129774Stjr#define _STDSTREAM_DECLARED 159129774Stjr#endif 1601539Srgrimes 161178778Sjhb#define __SLBF 0x0001 /* line buffered */ 162178778Sjhb#define __SNBF 0x0002 /* unbuffered */ 163178778Sjhb#define __SRD 0x0004 /* OK to read */ 164178778Sjhb#define __SWR 0x0008 /* OK to write */ 165178778Sjhb /* RD and WR are never simultaneously asserted */ 166178778Sjhb#define __SRW 0x0010 /* open for reading & writing */ 167178778Sjhb#define __SEOF 0x0020 /* found EOF */ 168178778Sjhb#define __SERR 0x0040 /* found error */ 169178778Sjhb#define __SMBF 0x0080 /* _buf is from malloc */ 170178778Sjhb#define __SAPP 0x0100 /* fdopen()ed in append mode */ 171178778Sjhb#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ 172178778Sjhb#define __SOPT 0x0400 /* do fseek() optimization */ 173178778Sjhb#define __SNPT 0x0800 /* do not do fseek() optimization */ 174178778Sjhb#define __SOFF 0x1000 /* set iff _offset is in fact correct */ 175178778Sjhb#define __SMOD 0x2000 /* true => fgetln modified _p text */ 176178778Sjhb#define __SALC 0x4000 /* allocate string space dynamically */ 177178778Sjhb#define __SIGN 0x8000 /* ignore this file in _fwalk */ 178178778Sjhb 1791539Srgrimes/* 1801539Srgrimes * The following three definitions are for ANSI C, which took them 1811539Srgrimes * from System V, which brilliantly took internal interface macros and 1821539Srgrimes * made them official arguments to setvbuf(), without renaming them. 1831539Srgrimes * Hence, these ugly _IOxxx names are *supposed* to appear in user code. 184178778Sjhb * 185178778Sjhb * Although numbered as their counterparts above, the implementation 186178778Sjhb * does not rely on this. 1871539Srgrimes */ 1881539Srgrimes#define _IOFBF 0 /* setvbuf should set fully buffered */ 1891539Srgrimes#define _IOLBF 1 /* setvbuf should set line buffered */ 1901539Srgrimes#define _IONBF 2 /* setvbuf should set unbuffered */ 1911539Srgrimes 1921539Srgrimes#define BUFSIZ 1024 /* size of buffer used by setbuf */ 1931539Srgrimes#define EOF (-1) 1941539Srgrimes 1951539Srgrimes/* 1961539Srgrimes * FOPEN_MAX is a minimum maximum, and is the number of streams that 1971539Srgrimes * stdio can provide without attempting to allocate further resources 1981539Srgrimes * (which could fail). Do not use this for anything. 1991539Srgrimes */ 2001539Srgrimes /* must be == _POSIX_STREAM_MAX <limits.h> */ 201177653Sjb#ifndef FOPEN_MAX 2021539Srgrimes#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */ 203177653Sjb#endif 2041539Srgrimes#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */ 2051539Srgrimes 2061539Srgrimes/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ 207100133Swollman#if __XSI_VISIBLE 208228924Sdelphij#define P_tmpdir "/tmp/" 2091539Srgrimes#endif 2101539Srgrimes#define L_tmpnam 1024 /* XXX must be == PATH_MAX */ 2111539Srgrimes#define TMP_MAX 308915776 2121539Srgrimes 2131539Srgrimes#ifndef SEEK_SET 2141539Srgrimes#define SEEK_SET 0 /* set file offset to offset */ 2151539Srgrimes#endif 2161539Srgrimes#ifndef SEEK_CUR 2171539Srgrimes#define SEEK_CUR 1 /* set file offset to current plus offset */ 2181539Srgrimes#endif 2191539Srgrimes#ifndef SEEK_END 2201539Srgrimes#define SEEK_END 2 /* set file offset to EOF plus offset */ 2211539Srgrimes#endif 2221539Srgrimes 22381600Speter#define stdin __stdinp 22481600Speter#define stdout __stdoutp 22581600Speter#define stderr __stderrp 2261539Srgrimes 227100133Swollman__BEGIN_DECLS 228233600Stheraven#ifdef _XLOCALE_H_ 229233600Stheraven#include <xlocale/_stdio.h> 230233600Stheraven#endif 2311539Srgrimes/* 2321539Srgrimes * Functions defined in ANSI C standard. 2331539Srgrimes */ 23493032Simpvoid clearerr(FILE *); 23593032Simpint fclose(FILE *); 23693032Simpint feof(FILE *); 23793032Simpint ferror(FILE *); 23893032Simpint fflush(FILE *); 23993032Simpint fgetc(FILE *); 240104989Smikeint fgetpos(FILE * __restrict, fpos_t * __restrict); 241104989Smikechar *fgets(char * __restrict, int, FILE * __restrict); 242104989SmikeFILE *fopen(const char * __restrict, const char * __restrict); 243103012Stjrint fprintf(FILE * __restrict, const char * __restrict, ...); 24493032Simpint fputc(int, FILE *); 245104989Smikeint fputs(const char * __restrict, FILE * __restrict); 246104989Smikesize_t fread(void * __restrict, size_t, size_t, FILE * __restrict); 247104989SmikeFILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict); 248104989Smikeint fscanf(FILE * __restrict, const char * __restrict, ...); 24993032Simpint fseek(FILE *, long, int); 25093032Simpint fsetpos(FILE *, const fpos_t *); 25193032Simplong ftell(FILE *); 252104989Smikesize_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict); 25393032Simpint getc(FILE *); 25493032Simpint getchar(void); 25593032Simpchar *gets(char *); 25693032Simpvoid perror(const char *); 257103012Stjrint printf(const char * __restrict, ...); 25893032Simpint putc(int, FILE *); 25993032Simpint putchar(int); 26093032Simpint puts(const char *); 26193032Simpint remove(const char *); 26293032Simpint rename(const char *, const char *); 26393032Simpvoid rewind(FILE *); 264104989Smikeint scanf(const char * __restrict, ...); 265103012Stjrvoid setbuf(FILE * __restrict, char * __restrict); 266103012Stjrint setvbuf(FILE * __restrict, char * __restrict, int, size_t); 267103012Stjrint sprintf(char * __restrict, const char * __restrict, ...); 268104989Smikeint sscanf(const char * __restrict, const char * __restrict, ...); 26993032SimpFILE *tmpfile(void); 27093032Simpchar *tmpnam(char *); 27193032Simpint ungetc(int, FILE *); 272103012Stjrint vfprintf(FILE * __restrict, const char * __restrict, 273102227Smike __va_list); 274103012Stjrint vprintf(const char * __restrict, __va_list); 275103012Stjrint vsprintf(char * __restrict, const char * __restrict, 276102227Smike __va_list); 2771539Srgrimes 278100133Swollman#if __ISO_C_VISIBLE >= 1999 279103012Stjrint snprintf(char * __restrict, size_t, const char * __restrict, 280101914Srobert ...) __printflike(3, 4); 281105098Stjrint vfscanf(FILE * __restrict, const char * __restrict, __va_list) 282105098Stjr __scanflike(2, 0); 283104989Smikeint vscanf(const char * __restrict, __va_list) __scanflike(1, 0); 284103012Stjrint vsnprintf(char * __restrict, size_t, const char * __restrict, 285102227Smike __va_list) __printflike(3, 0); 286104989Smikeint vsscanf(const char * __restrict, const char * __restrict, __va_list) 287104585Smike __scanflike(2, 0); 288100133Swollman#endif 289100133Swollman 2901539Srgrimes/* 291100133Swollman * Functions defined in all versions of POSIX 1003.1. 2921539Srgrimes */ 293104585Smike#if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506 294210957Sed#define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */ 295104585Smike#endif 2961539Srgrimes 297104585Smike#if __POSIX_VISIBLE 29819211Swosch#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */ 29919211Swosch 30093032Simpchar *ctermid(char *); 30193032SimpFILE *fdopen(int, const char *); 30293032Simpint fileno(FILE *); 303100133Swollman#endif /* __POSIX_VISIBLE */ 304100133Swollman 305100133Swollman#if __POSIX_VISIBLE >= 199209 306100133Swollmanint pclose(FILE *); 307100133SwollmanFILE *popen(const char *, const char *); 308100133Swollman#endif 309100133Swollman 310100133Swollman#if __POSIX_VISIBLE >= 199506 31193032Simpint ftrylockfile(FILE *); 31293032Simpvoid flockfile(FILE *); 31393032Simpvoid funlockfile(FILE *); 3141539Srgrimes 3151539Srgrimes/* 316178778Sjhb * These are normally used through macros as defined below, but POSIX 317178778Sjhb * requires functions as well. 31824897Sbde */ 319100133Swollmanint getc_unlocked(FILE *); 320100133Swollmanint getchar_unlocked(void); 321100133Swollmanint putc_unlocked(int, FILE *); 322100133Swollmanint putchar_unlocked(int); 32324897Sbde#endif 324109168Stjr#if __BSD_VISIBLE 325178722Sjhbvoid clearerr_unlocked(FILE *); 326178722Sjhbint feof_unlocked(FILE *); 327178722Sjhbint ferror_unlocked(FILE *); 328178722Sjhbint fileno_unlocked(FILE *); 329109168Stjr#endif 330100133Swollman 331100133Swollman#if __POSIX_VISIBLE >= 200112 332102227Smikeint fseeko(FILE *, __off_t, int); 333102227Smike__off_t ftello(FILE *); 33424897Sbde#endif 335100133Swollman 336100133Swollman#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 337100133Swollmanint getw(FILE *); 338100133Swollmanint putw(int, FILE *); 339100133Swollman#endif /* BSD or X/Open before issue 6 */ 340100133Swollman 341100133Swollman#if __XSI_VISIBLE 342100133Swollmanchar *tempnam(const char *, const char *); 34324897Sbde#endif 34424897Sbde 345189136Sdas#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 346246120SgahrFILE *fmemopen(void * __restrict, size_t, const char * __restrict); 347189136Sdasssize_t getdelim(char ** __restrict, size_t * __restrict, int, 348189136Sdas FILE * __restrict); 349247411SjhbFILE *open_memstream(char **, size_t *); 350189355Sdasint renameat(int, const char *, int, const char *); 351189356Sdasint vdprintf(int, const char * __restrict, __va_list); 352189136Sdas 35324897Sbde/* 354189356Sdas * Every programmer and his dog wrote functions called getline() and dprintf() 355189356Sdas * before POSIX.1-2008 came along and decided to usurp the names, so we 356189356Sdas * don't prototype them by default unless one of the following is true: 357189356Sdas * a) the app has requested them specifically by defining _WITH_GETLINE or 358189356Sdas * _WITH_DPRINTF, respectively 359189136Sdas * b) the app has requested a POSIX.1-2008 environment via _POSIX_C_SOURCE 360189136Sdas * c) the app defines a GNUism such as _BSD_SOURCE or _GNU_SOURCE 361189136Sdas */ 362189136Sdas#ifndef _WITH_GETLINE 363189136Sdas#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 364189136Sdas#define _WITH_GETLINE 365189136Sdas#elif defined(_POSIX_C_SOURCE) 366189818Sdas#if _POSIX_C_SOURCE >= 200809 367189136Sdas#define _WITH_GETLINE 368189136Sdas#endif 369189136Sdas#endif 370189136Sdas#endif 371189136Sdas 372189136Sdas#ifdef _WITH_GETLINE 373189136Sdasssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); 374189136Sdas#endif 375189136Sdas 376189356Sdas#ifndef _WITH_DPRINTF 377189356Sdas#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 378189356Sdas#define _WITH_DPRINTF 379189356Sdas#elif defined(_POSIX_C_SOURCE) 380189818Sdas#if _POSIX_C_SOURCE >= 200809 381189356Sdas#define _WITH_DPRINTF 382189356Sdas#endif 383189356Sdas#endif 384189356Sdas#endif 385189356Sdas 386189356Sdas#ifdef _WITH_DPRINTF 387190409Sdasint (dprintf)(int, const char * __restrict, ...); 388189356Sdas#endif 389189356Sdas 390189136Sdas#endif /* __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 */ 391189136Sdas 392189136Sdas/* 3931539Srgrimes * Routines that are purely local. 3941539Srgrimes */ 395100133Swollman#if __BSD_VISIBLE 39693032Simpint asprintf(char **, const char *, ...) __printflike(2, 3); 39793032Simpchar *ctermid_r(char *); 398178722Sjhbvoid fcloseall(void); 39993032Simpchar *fgetln(FILE *, size_t *); 400194801Sdelphijconst char *fmtcheck(const char *, const char *) __format_arg(2); 40193032Simpint fpurge(FILE *); 40293032Simpvoid setbuffer(FILE *, char *, int); 40393032Simpint setlinebuf(FILE *); 404102227Smikeint vasprintf(char **, const char *, __va_list) 40537614Sbde __printflike(2, 0); 4061539Srgrimes 4071539Srgrimes/* 408100133Swollman * The system error table contains messages for the first sys_nerr 409100133Swollman * positive errno values. Use strerror() or strerror_r() from <string.h> 410100133Swollman * instead. 411100133Swollman */ 412228468Sedextern const int sys_nerr; 413228468Sedextern const char * const sys_errlist[]; 414100133Swollman 415100133Swollman/* 4161539Srgrimes * Stdio function-access interface. 4171539Srgrimes */ 41893032SimpFILE *funopen(const void *, 41975818Sobrien int (*)(void *, char *, int), 42075818Sobrien int (*)(void *, const char *, int), 42175818Sobrien fpos_t (*)(void *, fpos_t, int), 42293032Simp int (*)(void *)); 4231539Srgrimes#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) 4241539Srgrimes#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) 4251539Srgrimes 4261539Srgrimes/* 427100133Swollman * Portability hacks. See <sys/types.h>. 428100133Swollman */ 429100133Swollman#ifndef _FTRUNCATE_DECLARED 430100133Swollman#define _FTRUNCATE_DECLARED 431102227Smikeint ftruncate(int, __off_t); 432100133Swollman#endif 433100133Swollman#ifndef _LSEEK_DECLARED 434100133Swollman#define _LSEEK_DECLARED 435102227Smike__off_t lseek(int, __off_t, int); 436100133Swollman#endif 437100133Swollman#ifndef _MMAP_DECLARED 438100133Swollman#define _MMAP_DECLARED 439102227Smikevoid *mmap(void *, size_t, int, int, int, __off_t); 440100133Swollman#endif 441100133Swollman#ifndef _TRUNCATE_DECLARED 442100133Swollman#define _TRUNCATE_DECLARED 443102227Smikeint truncate(const char *, __off_t); 444100133Swollman#endif 445100133Swollman#endif /* __BSD_VISIBLE */ 446100133Swollman 447178778Sjhb/* 448178778Sjhb * Functions internal to the implementation. 449178778Sjhb */ 450178778Sjhbint __srget(FILE *); 451178778Sjhbint __swbuf(int, FILE *); 452178778Sjhb 453178778Sjhb/* 454178778Sjhb * The __sfoo macros are here so that we can 455178778Sjhb * define function versions in the C library. 456178778Sjhb */ 457178778Sjhb#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 458178778Sjhb#if defined(__GNUC__) && defined(__STDC__) 459178778Sjhbstatic __inline int __sputc(int _c, FILE *_p) { 460178778Sjhb if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) 461178778Sjhb return (*_p->_p++ = _c); 462178778Sjhb else 463178778Sjhb return (__swbuf(_c, _p)); 464178778Sjhb} 465178778Sjhb#else 466178778Sjhb/* 467178778Sjhb * This has been tuned to generate reasonable code on the vax using pcc. 468178778Sjhb */ 469178778Sjhb#define __sputc(c, p) \ 470178778Sjhb (--(p)->_w < 0 ? \ 471178778Sjhb (p)->_w >= (p)->_lbfsize ? \ 472178778Sjhb (*(p)->_p = (c)), *(p)->_p != '\n' ? \ 473178778Sjhb (int)*(p)->_p++ : \ 474178778Sjhb __swbuf('\n', p) : \ 475178778Sjhb __swbuf((int)(c), p) : \ 476178778Sjhb (*(p)->_p = (c), (int)*(p)->_p++)) 477178778Sjhb#endif 478228875Stheraven 479228875Stheravenextern int __isthreaded; 480228875Stheraven 481227487Stheraven#ifndef __cplusplus 482178778Sjhb 483178778Sjhb#define __sfeof(p) (((p)->_flags & __SEOF) != 0) 484178778Sjhb#define __sferror(p) (((p)->_flags & __SERR) != 0) 485178778Sjhb#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) 486178778Sjhb#define __sfileno(p) ((p)->_file) 487178778Sjhb 488178778Sjhb 489178778Sjhb#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) 490178778Sjhb#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) 491178778Sjhb#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) 492178778Sjhb 493178778Sjhb#if __POSIX_VISIBLE 494178778Sjhb#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) 495178778Sjhb#endif 496178778Sjhb 497178778Sjhb#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) 498178778Sjhb#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) 499178778Sjhb 500178778Sjhb#define getchar() getc(stdin) 501178778Sjhb#define putchar(x) putc(x, stdout) 502178778Sjhb 503178778Sjhb#if __BSD_VISIBLE 504178778Sjhb/* 505178778Sjhb * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 506178778Sjhb * B.8.2.7 for the rationale behind the *_unlocked() macros. 507178778Sjhb */ 508178778Sjhb#define feof_unlocked(p) __sfeof(p) 509178778Sjhb#define ferror_unlocked(p) __sferror(p) 510178778Sjhb#define clearerr_unlocked(p) __sclearerr(p) 511178778Sjhb#define fileno_unlocked(p) __sfileno(p) 512178778Sjhb#endif 513178778Sjhb#if __POSIX_VISIBLE >= 199506 514178778Sjhb#define getc_unlocked(fp) __sgetc(fp) 515178778Sjhb#define putc_unlocked(x, fp) __sputc(x, fp) 516178778Sjhb 517178778Sjhb#define getchar_unlocked() getc_unlocked(stdin) 518178778Sjhb#define putchar_unlocked(x) putc_unlocked(x, stdout) 519178778Sjhb#endif 520227487Stheraven#endif /* __cplusplus */ 521178778Sjhb 522100133Swollman__END_DECLS 52324897Sbde#endif /* !_STDIO_H_ */ 524