stdio.h revision 189818
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. 161539Srgrimes * 3. All advertising materials mentioning features or use of this software 171539Srgrimes * must display the following acknowledgement: 181539Srgrimes * This product includes software developed by the University of 191539Srgrimes * California, Berkeley and its contributors. 201539Srgrimes * 4. Neither the name of the University nor the names of its contributors 211539Srgrimes * may be used to endorse or promote products derived from this software 221539Srgrimes * without specific prior written permission. 231539Srgrimes * 241539Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251539Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261539Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271539Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281539Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291539Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301539Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311539Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321539Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331539Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341539Srgrimes * SUCH DAMAGE. 351539Srgrimes * 3623655Speter * @(#)stdio.h 8.5 (Berkeley) 4/29/95 3750473Speter * $FreeBSD: head/include/stdio.h 189818 2009-03-14 19:12:11Z das $ 381539Srgrimes */ 391539Srgrimes 401539Srgrimes#ifndef _STDIO_H_ 411539Srgrimes#define _STDIO_H_ 421539Srgrimes 431539Srgrimes#include <sys/cdefs.h> 44123257Smarcel#include <sys/_null.h> 45102227Smike#include <sys/_types.h> 461539Srgrimes 47104585Smiketypedef __off_t fpos_t; 48104585Smike 49102227Smike#ifndef _SIZE_T_DECLARED 50102227Smiketypedef __size_t size_t; 51102227Smike#define _SIZE_T_DECLARED 521539Srgrimes#endif 531539Srgrimes 54189136Sdas#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 55189136Sdas#ifndef _OFF_T_DECLARED 56189136Sdas#define _OFF_T_DECLARED 57189136Sdastypedef __off_t off_t; 58189136Sdas#endif 59189136Sdas#ifndef _SSIZE_T_DECLARED 60189136Sdas#define _SSIZE_T_DECLARED 61189136Sdastypedef __ssize_t ssize_t; 62189136Sdas#endif 63189136Sdas#endif 64189136Sdas 65104585Smike#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE 66104585Smike#ifndef _VA_LIST_DECLARED 67104585Smiketypedef __va_list va_list; 68104585Smike#define _VA_LIST_DECLARED 69104585Smike#endif 70104585Smike#endif 71104585Smike 721539Srgrimes#define _FSTDIO /* Define for new stdio with functions. */ 731539Srgrimes 74178778Sjhb/* 75178778Sjhb * NB: to fit things in six character monocase externals, the stdio 76178778Sjhb * code uses the prefix `__s' for stdio objects, typically followed 77178778Sjhb * by a three-character attempt at a mnemonic. 78178778Sjhb */ 791539Srgrimes 80178778Sjhb/* stdio buffers */ 81178778Sjhbstruct __sbuf { 82178778Sjhb unsigned char *_base; 83178778Sjhb int _size; 84178778Sjhb}; 85178778Sjhb 86178778Sjhb/* 87178778Sjhb * stdio state variables. 88178778Sjhb * 89178778Sjhb * The following always hold: 90178778Sjhb * 91178778Sjhb * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), 92178778Sjhb * _lbfsize is -_bf._size, else _lbfsize is 0 93178778Sjhb * if _flags&__SRD, _w is 0 94178778Sjhb * if _flags&__SWR, _r is 0 95178778Sjhb * 96178778Sjhb * This ensures that the getc and putc macros (or inline functions) never 97178778Sjhb * try to write or read from a file that is in `read' or `write' mode. 98178778Sjhb * (Moreover, they can, and do, automatically switch from read mode to 99178778Sjhb * write mode, and back, on "r+" and "w+" files.) 100178778Sjhb * 101178778Sjhb * _lbfsize is used only to make the inline line-buffered output stream 102178778Sjhb * code as compact as possible. 103178778Sjhb * 104178778Sjhb * _ub, _up, and _ur are used when ungetc() pushes back more characters 105178778Sjhb * than fit in the current _bf, or when ungetc() pushes back a character 106178778Sjhb * that does not match the previous one in _bf. When this happens, 107178778Sjhb * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff 108178778Sjhb * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. 109178778Sjhb * 110178778Sjhb * Certain members of __sFILE are accessed directly via macros or 111178778Sjhb * inline functions. To preserve ABI compat, these members must not 112178778Sjhb * be disturbed. These members are marked below with (*). 113178778Sjhb */ 114178778Sjhbtypedef struct __sFILE { 115178778Sjhb unsigned char *_p; /* (*) current position in (some) buffer */ 116178778Sjhb int _r; /* (*) read space left for getc() */ 117178778Sjhb int _w; /* (*) write space left for putc() */ 118178778Sjhb short _flags; /* (*) flags, below; this FILE is free if 0 */ 119178778Sjhb short _file; /* (*) fileno, if Unix descriptor, else -1 */ 120178829Sjhb struct __sbuf _bf; /* (*) the buffer (at least 1 byte, if !NULL) */ 121178778Sjhb int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */ 122178778Sjhb 123178778Sjhb /* operations */ 124178779Sjhb void *_cookie; /* (*) cookie passed to io functions */ 125178778Sjhb int (*_close)(void *); 126178778Sjhb int (*_read)(void *, char *, int); 127178778Sjhb fpos_t (*_seek)(void *, fpos_t, int); 128178778Sjhb int (*_write)(void *, const char *, int); 129178778Sjhb 130178778Sjhb /* separate buffer for long sequences of ungetc() */ 131178778Sjhb struct __sbuf _ub; /* ungetc buffer */ 132178778Sjhb unsigned char *_up; /* saved _p when _p is doing ungetc data */ 133178778Sjhb int _ur; /* saved _r when _r is counting ungetc data */ 134178778Sjhb 135178778Sjhb /* tricks to meet minimum requirements even when malloc() fails */ 136178778Sjhb unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ 137178778Sjhb unsigned char _nbuf[1]; /* guarantee a getc() buffer */ 138178778Sjhb 139178778Sjhb /* separate buffer for fgetln() when line crosses buffer boundary */ 140178778Sjhb struct __sbuf _lb; /* buffer for fgetln() */ 141178778Sjhb 142178778Sjhb /* Unix stdio files get aligned to block boundaries on fseek() */ 143178778Sjhb int _blksize; /* stat.st_blksize (may be != _bf._size) */ 144178778Sjhb fpos_t _offset; /* current lseek offset */ 145178778Sjhb 146178778Sjhb struct pthread_mutex *_fl_mutex; /* used for MT-safety */ 147178778Sjhb struct pthread *_fl_owner; /* current owner */ 148178778Sjhb int _fl_count; /* recursive lock count */ 149178778Sjhb int _orientation; /* orientation for fwide() */ 150178778Sjhb __mbstate_t _mbstate; /* multibyte conversion state */ 151178778Sjhb} FILE; 152178778Sjhb 153129774Stjr#ifndef _STDSTREAM_DECLARED 1541539Srgrimes__BEGIN_DECLS 15581600Speterextern FILE *__stdinp; 15681600Speterextern FILE *__stdoutp; 15781600Speterextern FILE *__stderrp; 1581539Srgrimes__END_DECLS 159129774Stjr#define _STDSTREAM_DECLARED 160129774Stjr#endif 1611539Srgrimes 162178778Sjhb#define __SLBF 0x0001 /* line buffered */ 163178778Sjhb#define __SNBF 0x0002 /* unbuffered */ 164178778Sjhb#define __SRD 0x0004 /* OK to read */ 165178778Sjhb#define __SWR 0x0008 /* OK to write */ 166178778Sjhb /* RD and WR are never simultaneously asserted */ 167178778Sjhb#define __SRW 0x0010 /* open for reading & writing */ 168178778Sjhb#define __SEOF 0x0020 /* found EOF */ 169178778Sjhb#define __SERR 0x0040 /* found error */ 170178778Sjhb#define __SMBF 0x0080 /* _buf is from malloc */ 171178778Sjhb#define __SAPP 0x0100 /* fdopen()ed in append mode */ 172178778Sjhb#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ 173178778Sjhb#define __SOPT 0x0400 /* do fseek() optimization */ 174178778Sjhb#define __SNPT 0x0800 /* do not do fseek() optimization */ 175178778Sjhb#define __SOFF 0x1000 /* set iff _offset is in fact correct */ 176178778Sjhb#define __SMOD 0x2000 /* true => fgetln modified _p text */ 177178778Sjhb#define __SALC 0x4000 /* allocate string space dynamically */ 178178778Sjhb#define __SIGN 0x8000 /* ignore this file in _fwalk */ 179178778Sjhb 1801539Srgrimes/* 1811539Srgrimes * The following three definitions are for ANSI C, which took them 1821539Srgrimes * from System V, which brilliantly took internal interface macros and 1831539Srgrimes * made them official arguments to setvbuf(), without renaming them. 1841539Srgrimes * Hence, these ugly _IOxxx names are *supposed* to appear in user code. 185178778Sjhb * 186178778Sjhb * Although numbered as their counterparts above, the implementation 187178778Sjhb * does not rely on this. 1881539Srgrimes */ 1891539Srgrimes#define _IOFBF 0 /* setvbuf should set fully buffered */ 1901539Srgrimes#define _IOLBF 1 /* setvbuf should set line buffered */ 1911539Srgrimes#define _IONBF 2 /* setvbuf should set unbuffered */ 1921539Srgrimes 1931539Srgrimes#define BUFSIZ 1024 /* size of buffer used by setbuf */ 1941539Srgrimes#define EOF (-1) 1951539Srgrimes 1961539Srgrimes/* 1971539Srgrimes * FOPEN_MAX is a minimum maximum, and is the number of streams that 1981539Srgrimes * stdio can provide without attempting to allocate further resources 1991539Srgrimes * (which could fail). Do not use this for anything. 2001539Srgrimes */ 2011539Srgrimes /* must be == _POSIX_STREAM_MAX <limits.h> */ 202177653Sjb#ifndef FOPEN_MAX 2031539Srgrimes#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */ 204177653Sjb#endif 2051539Srgrimes#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */ 2061539Srgrimes 2071539Srgrimes/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ 208100133Swollman#if __XSI_VISIBLE 2091539Srgrimes#define P_tmpdir "/var/tmp/" 2101539Srgrimes#endif 2111539Srgrimes#define L_tmpnam 1024 /* XXX must be == PATH_MAX */ 2121539Srgrimes#define TMP_MAX 308915776 2131539Srgrimes 2141539Srgrimes#ifndef SEEK_SET 2151539Srgrimes#define SEEK_SET 0 /* set file offset to offset */ 2161539Srgrimes#endif 2171539Srgrimes#ifndef SEEK_CUR 2181539Srgrimes#define SEEK_CUR 1 /* set file offset to current plus offset */ 2191539Srgrimes#endif 2201539Srgrimes#ifndef SEEK_END 2211539Srgrimes#define SEEK_END 2 /* set file offset to EOF plus offset */ 2221539Srgrimes#endif 2231539Srgrimes 22481600Speter#define stdin __stdinp 22581600Speter#define stdout __stdoutp 22681600Speter#define stderr __stderrp 2271539Srgrimes 228100133Swollman__BEGIN_DECLS 2291539Srgrimes/* 2301539Srgrimes * Functions defined in ANSI C standard. 2311539Srgrimes */ 23293032Simpvoid clearerr(FILE *); 23393032Simpint fclose(FILE *); 23493032Simpint feof(FILE *); 23593032Simpint ferror(FILE *); 23693032Simpint fflush(FILE *); 23793032Simpint fgetc(FILE *); 238104989Smikeint fgetpos(FILE * __restrict, fpos_t * __restrict); 239104989Smikechar *fgets(char * __restrict, int, FILE * __restrict); 240104989SmikeFILE *fopen(const char * __restrict, const char * __restrict); 241103012Stjrint fprintf(FILE * __restrict, const char * __restrict, ...); 24293032Simpint fputc(int, FILE *); 243104989Smikeint fputs(const char * __restrict, FILE * __restrict); 244104989Smikesize_t fread(void * __restrict, size_t, size_t, FILE * __restrict); 245104989SmikeFILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict); 246104989Smikeint fscanf(FILE * __restrict, const char * __restrict, ...); 24793032Simpint fseek(FILE *, long, int); 24893032Simpint fsetpos(FILE *, const fpos_t *); 24993032Simplong ftell(FILE *); 250104989Smikesize_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict); 25193032Simpint getc(FILE *); 25293032Simpint getchar(void); 25393032Simpchar *gets(char *); 25493032Simpvoid perror(const char *); 255103012Stjrint printf(const char * __restrict, ...); 25693032Simpint putc(int, FILE *); 25793032Simpint putchar(int); 25893032Simpint puts(const char *); 25993032Simpint remove(const char *); 26093032Simpint rename(const char *, const char *); 26193032Simpvoid rewind(FILE *); 262104989Smikeint scanf(const char * __restrict, ...); 263103012Stjrvoid setbuf(FILE * __restrict, char * __restrict); 264103012Stjrint setvbuf(FILE * __restrict, char * __restrict, int, size_t); 265103012Stjrint sprintf(char * __restrict, const char * __restrict, ...); 266104989Smikeint sscanf(const char * __restrict, const char * __restrict, ...); 26793032SimpFILE *tmpfile(void); 26893032Simpchar *tmpnam(char *); 26993032Simpint ungetc(int, FILE *); 270103012Stjrint vfprintf(FILE * __restrict, const char * __restrict, 271102227Smike __va_list); 272103012Stjrint vprintf(const char * __restrict, __va_list); 273103012Stjrint vsprintf(char * __restrict, const char * __restrict, 274102227Smike __va_list); 2751539Srgrimes 276100133Swollman#if __ISO_C_VISIBLE >= 1999 277103012Stjrint snprintf(char * __restrict, size_t, const char * __restrict, 278101914Srobert ...) __printflike(3, 4); 279105098Stjrint vfscanf(FILE * __restrict, const char * __restrict, __va_list) 280105098Stjr __scanflike(2, 0); 281104989Smikeint vscanf(const char * __restrict, __va_list) __scanflike(1, 0); 282103012Stjrint vsnprintf(char * __restrict, size_t, const char * __restrict, 283102227Smike __va_list) __printflike(3, 0); 284104989Smikeint vsscanf(const char * __restrict, const char * __restrict, __va_list) 285104585Smike __scanflike(2, 0); 286100133Swollman#endif 287100133Swollman 2881539Srgrimes/* 289100133Swollman * Functions defined in all versions of POSIX 1003.1. 2901539Srgrimes */ 291104585Smike#if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506 29219211Swosch/* size for cuserid(3); UT_NAMESIZE + 1, see <utmp.h> */ 293104585Smike#define L_cuserid 17 /* legacy */ 294104585Smike#endif 2951539Srgrimes 296104585Smike#if __POSIX_VISIBLE 29719211Swosch#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */ 29819211Swosch 29993032Simpchar *ctermid(char *); 30093032SimpFILE *fdopen(int, const char *); 30193032Simpint fileno(FILE *); 302100133Swollman#endif /* __POSIX_VISIBLE */ 303100133Swollman 304100133Swollman#if __POSIX_VISIBLE >= 199209 305100133Swollmanint pclose(FILE *); 306100133SwollmanFILE *popen(const char *, const char *); 307100133Swollman#endif 308100133Swollman 309100133Swollman#if __POSIX_VISIBLE >= 199506 31093032Simpint ftrylockfile(FILE *); 31193032Simpvoid flockfile(FILE *); 31293032Simpvoid funlockfile(FILE *); 3131539Srgrimes 3141539Srgrimes/* 315178778Sjhb * These are normally used through macros as defined below, but POSIX 316178778Sjhb * requires functions as well. 31724897Sbde */ 318100133Swollmanint getc_unlocked(FILE *); 319100133Swollmanint getchar_unlocked(void); 320100133Swollmanint putc_unlocked(int, FILE *); 321100133Swollmanint putchar_unlocked(int); 32224897Sbde#endif 323109168Stjr#if __BSD_VISIBLE 324178722Sjhbvoid clearerr_unlocked(FILE *); 325178722Sjhbint feof_unlocked(FILE *); 326178722Sjhbint ferror_unlocked(FILE *); 327178722Sjhbint fileno_unlocked(FILE *); 328109168Stjr#endif 329100133Swollman 330100133Swollman#if __POSIX_VISIBLE >= 200112 331102227Smikeint fseeko(FILE *, __off_t, int); 332102227Smike__off_t ftello(FILE *); 33324897Sbde#endif 334100133Swollman 335100133Swollman#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 336100133Swollmanint getw(FILE *); 337100133Swollmanint putw(int, FILE *); 338100133Swollman#endif /* BSD or X/Open before issue 6 */ 339100133Swollman 340100133Swollman#if __XSI_VISIBLE 341100133Swollmanchar *tempnam(const char *, const char *); 34224897Sbde#endif 34324897Sbde 344189136Sdas#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 345189136Sdasssize_t getdelim(char ** __restrict, size_t * __restrict, int, 346189136Sdas FILE * __restrict); 347189355Sdasint renameat(int, const char *, int, const char *); 348189356Sdasint vdprintf(int, const char * __restrict, __va_list); 349189136Sdas 35024897Sbde/* 351189356Sdas * Every programmer and his dog wrote functions called getline() and dprintf() 352189356Sdas * before POSIX.1-2008 came along and decided to usurp the names, so we 353189356Sdas * don't prototype them by default unless one of the following is true: 354189356Sdas * a) the app has requested them specifically by defining _WITH_GETLINE or 355189356Sdas * _WITH_DPRINTF, respectively 356189136Sdas * b) the app has requested a POSIX.1-2008 environment via _POSIX_C_SOURCE 357189136Sdas * c) the app defines a GNUism such as _BSD_SOURCE or _GNU_SOURCE 358189136Sdas */ 359189136Sdas#ifndef _WITH_GETLINE 360189136Sdas#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 361189136Sdas#define _WITH_GETLINE 362189136Sdas#elif defined(_POSIX_C_SOURCE) 363189818Sdas#if _POSIX_C_SOURCE >= 200809 364189136Sdas#define _WITH_GETLINE 365189136Sdas#endif 366189136Sdas#endif 367189136Sdas#endif 368189136Sdas 369189136Sdas#ifdef _WITH_GETLINE 370189136Sdasssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); 371189136Sdas#endif 372189136Sdas 373189356Sdas#ifndef _WITH_DPRINTF 374189356Sdas#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 375189356Sdas#define _WITH_DPRINTF 376189356Sdas#elif defined(_POSIX_C_SOURCE) 377189818Sdas#if _POSIX_C_SOURCE >= 200809 378189356Sdas#define _WITH_DPRINTF 379189356Sdas#endif 380189356Sdas#endif 381189356Sdas#endif 382189356Sdas 383189356Sdas#ifdef _WITH_DPRINTF 384189356Sdasint dprintf(int, const char * __restrict, ...); 385189356Sdas#endif 386189356Sdas 387189136Sdas#endif /* __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 */ 388189136Sdas 389189136Sdas/* 3901539Srgrimes * Routines that are purely local. 3911539Srgrimes */ 392100133Swollman#if __BSD_VISIBLE 39393032Simpint asprintf(char **, const char *, ...) __printflike(2, 3); 39493032Simpchar *ctermid_r(char *); 395178722Sjhbvoid fcloseall(void); 39693032Simpchar *fgetln(FILE *, size_t *); 397154867Sstefanf__const char *fmtcheck(const char *, const char *) __format_arg(2); 39893032Simpint fpurge(FILE *); 39993032Simpvoid setbuffer(FILE *, char *, int); 40093032Simpint setlinebuf(FILE *); 401102227Smikeint vasprintf(char **, const char *, __va_list) 40237614Sbde __printflike(2, 0); 4031539Srgrimes 4041539Srgrimes/* 405100133Swollman * The system error table contains messages for the first sys_nerr 406100133Swollman * positive errno values. Use strerror() or strerror_r() from <string.h> 407100133Swollman * instead. 408100133Swollman */ 409100133Swollmanextern __const int sys_nerr; 410100133Swollmanextern __const char *__const sys_errlist[]; 411100133Swollman 412100133Swollman/* 4131539Srgrimes * Stdio function-access interface. 4141539Srgrimes */ 41593032SimpFILE *funopen(const void *, 41675818Sobrien int (*)(void *, char *, int), 41775818Sobrien int (*)(void *, const char *, int), 41875818Sobrien fpos_t (*)(void *, fpos_t, int), 41993032Simp int (*)(void *)); 4201539Srgrimes#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) 4211539Srgrimes#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) 4221539Srgrimes 4231539Srgrimes/* 424100133Swollman * Portability hacks. See <sys/types.h>. 425100133Swollman */ 426100133Swollman#ifndef _FTRUNCATE_DECLARED 427100133Swollman#define _FTRUNCATE_DECLARED 428102227Smikeint ftruncate(int, __off_t); 429100133Swollman#endif 430100133Swollman#ifndef _LSEEK_DECLARED 431100133Swollman#define _LSEEK_DECLARED 432102227Smike__off_t lseek(int, __off_t, int); 433100133Swollman#endif 434100133Swollman#ifndef _MMAP_DECLARED 435100133Swollman#define _MMAP_DECLARED 436102227Smikevoid *mmap(void *, size_t, int, int, int, __off_t); 437100133Swollman#endif 438100133Swollman#ifndef _TRUNCATE_DECLARED 439100133Swollman#define _TRUNCATE_DECLARED 440102227Smikeint truncate(const char *, __off_t); 441100133Swollman#endif 442100133Swollman#endif /* __BSD_VISIBLE */ 443100133Swollman 444178778Sjhb/* 445178778Sjhb * Functions internal to the implementation. 446178778Sjhb */ 447178778Sjhbint __srget(FILE *); 448178778Sjhbint __swbuf(int, FILE *); 449178778Sjhb 450178778Sjhb/* 451178778Sjhb * The __sfoo macros are here so that we can 452178778Sjhb * define function versions in the C library. 453178778Sjhb */ 454178778Sjhb#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 455178778Sjhb#if defined(__GNUC__) && defined(__STDC__) 456178778Sjhbstatic __inline int __sputc(int _c, FILE *_p) { 457178778Sjhb if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) 458178778Sjhb return (*_p->_p++ = _c); 459178778Sjhb else 460178778Sjhb return (__swbuf(_c, _p)); 461178778Sjhb} 462178778Sjhb#else 463178778Sjhb/* 464178778Sjhb * This has been tuned to generate reasonable code on the vax using pcc. 465178778Sjhb */ 466178778Sjhb#define __sputc(c, p) \ 467178778Sjhb (--(p)->_w < 0 ? \ 468178778Sjhb (p)->_w >= (p)->_lbfsize ? \ 469178778Sjhb (*(p)->_p = (c)), *(p)->_p != '\n' ? \ 470178778Sjhb (int)*(p)->_p++ : \ 471178778Sjhb __swbuf('\n', p) : \ 472178778Sjhb __swbuf((int)(c), p) : \ 473178778Sjhb (*(p)->_p = (c), (int)*(p)->_p++)) 474178778Sjhb#endif 475178778Sjhb 476178778Sjhb#define __sfeof(p) (((p)->_flags & __SEOF) != 0) 477178778Sjhb#define __sferror(p) (((p)->_flags & __SERR) != 0) 478178778Sjhb#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) 479178778Sjhb#define __sfileno(p) ((p)->_file) 480178778Sjhb 481178778Sjhbextern int __isthreaded; 482178778Sjhb 483178778Sjhb#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) 484178778Sjhb#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) 485178778Sjhb#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) 486178778Sjhb 487178778Sjhb#if __POSIX_VISIBLE 488178778Sjhb#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) 489178778Sjhb#endif 490178778Sjhb 491178778Sjhb#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) 492178778Sjhb#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) 493178778Sjhb 494178778Sjhb#define getchar() getc(stdin) 495178778Sjhb#define putchar(x) putc(x, stdout) 496178778Sjhb 497178778Sjhb#if __BSD_VISIBLE 498178778Sjhb/* 499178778Sjhb * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 500178778Sjhb * B.8.2.7 for the rationale behind the *_unlocked() macros. 501178778Sjhb */ 502178778Sjhb#define feof_unlocked(p) __sfeof(p) 503178778Sjhb#define ferror_unlocked(p) __sferror(p) 504178778Sjhb#define clearerr_unlocked(p) __sclearerr(p) 505178778Sjhb#define fileno_unlocked(p) __sfileno(p) 506178778Sjhb#endif 507178778Sjhb#if __POSIX_VISIBLE >= 199506 508178778Sjhb#define getc_unlocked(fp) __sgetc(fp) 509178778Sjhb#define putc_unlocked(x, fp) __sputc(x, fp) 510178778Sjhb 511178778Sjhb#define getchar_unlocked() getc_unlocked(stdin) 512178778Sjhb#define putchar_unlocked(x) putc_unlocked(x, stdout) 513178778Sjhb#endif 514178778Sjhb 515100133Swollman__END_DECLS 51624897Sbde#endif /* !_STDIO_H_ */ 517