stdio.h revision 228468
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 228468 2011-12-13 13:32:56Z ed $ 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 2081539Srgrimes#define P_tmpdir "/var/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 2281539Srgrimes/* 2291539Srgrimes * Functions defined in ANSI C standard. 2301539Srgrimes */ 23193032Simpvoid clearerr(FILE *); 23293032Simpint fclose(FILE *); 23393032Simpint feof(FILE *); 23493032Simpint ferror(FILE *); 23593032Simpint fflush(FILE *); 23693032Simpint fgetc(FILE *); 237104989Smikeint fgetpos(FILE * __restrict, fpos_t * __restrict); 238104989Smikechar *fgets(char * __restrict, int, FILE * __restrict); 239104989SmikeFILE *fopen(const char * __restrict, const char * __restrict); 240103012Stjrint fprintf(FILE * __restrict, const char * __restrict, ...); 24193032Simpint fputc(int, FILE *); 242104989Smikeint fputs(const char * __restrict, FILE * __restrict); 243104989Smikesize_t fread(void * __restrict, size_t, size_t, FILE * __restrict); 244104989SmikeFILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict); 245104989Smikeint fscanf(FILE * __restrict, const char * __restrict, ...); 24693032Simpint fseek(FILE *, long, int); 24793032Simpint fsetpos(FILE *, const fpos_t *); 24893032Simplong ftell(FILE *); 249104989Smikesize_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict); 25093032Simpint getc(FILE *); 25193032Simpint getchar(void); 25293032Simpchar *gets(char *); 25393032Simpvoid perror(const char *); 254103012Stjrint printf(const char * __restrict, ...); 25593032Simpint putc(int, FILE *); 25693032Simpint putchar(int); 25793032Simpint puts(const char *); 25893032Simpint remove(const char *); 25993032Simpint rename(const char *, const char *); 26093032Simpvoid rewind(FILE *); 261104989Smikeint scanf(const char * __restrict, ...); 262103012Stjrvoid setbuf(FILE * __restrict, char * __restrict); 263103012Stjrint setvbuf(FILE * __restrict, char * __restrict, int, size_t); 264103012Stjrint sprintf(char * __restrict, const char * __restrict, ...); 265104989Smikeint sscanf(const char * __restrict, const char * __restrict, ...); 26693032SimpFILE *tmpfile(void); 26793032Simpchar *tmpnam(char *); 26893032Simpint ungetc(int, FILE *); 269103012Stjrint vfprintf(FILE * __restrict, const char * __restrict, 270102227Smike __va_list); 271103012Stjrint vprintf(const char * __restrict, __va_list); 272103012Stjrint vsprintf(char * __restrict, const char * __restrict, 273102227Smike __va_list); 2741539Srgrimes 275100133Swollman#if __ISO_C_VISIBLE >= 1999 276103012Stjrint snprintf(char * __restrict, size_t, const char * __restrict, 277101914Srobert ...) __printflike(3, 4); 278105098Stjrint vfscanf(FILE * __restrict, const char * __restrict, __va_list) 279105098Stjr __scanflike(2, 0); 280104989Smikeint vscanf(const char * __restrict, __va_list) __scanflike(1, 0); 281103012Stjrint vsnprintf(char * __restrict, size_t, const char * __restrict, 282102227Smike __va_list) __printflike(3, 0); 283104989Smikeint vsscanf(const char * __restrict, const char * __restrict, __va_list) 284104585Smike __scanflike(2, 0); 285100133Swollman#endif 286100133Swollman 2871539Srgrimes/* 288100133Swollman * Functions defined in all versions of POSIX 1003.1. 2891539Srgrimes */ 290104585Smike#if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506 291210957Sed#define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */ 292104585Smike#endif 2931539Srgrimes 294104585Smike#if __POSIX_VISIBLE 29519211Swosch#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */ 29619211Swosch 29793032Simpchar *ctermid(char *); 29893032SimpFILE *fdopen(int, const char *); 29993032Simpint fileno(FILE *); 300100133Swollman#endif /* __POSIX_VISIBLE */ 301100133Swollman 302100133Swollman#if __POSIX_VISIBLE >= 199209 303100133Swollmanint pclose(FILE *); 304100133SwollmanFILE *popen(const char *, const char *); 305100133Swollman#endif 306100133Swollman 307100133Swollman#if __POSIX_VISIBLE >= 199506 30893032Simpint ftrylockfile(FILE *); 30993032Simpvoid flockfile(FILE *); 31093032Simpvoid funlockfile(FILE *); 3111539Srgrimes 3121539Srgrimes/* 313178778Sjhb * These are normally used through macros as defined below, but POSIX 314178778Sjhb * requires functions as well. 31524897Sbde */ 316100133Swollmanint getc_unlocked(FILE *); 317100133Swollmanint getchar_unlocked(void); 318100133Swollmanint putc_unlocked(int, FILE *); 319100133Swollmanint putchar_unlocked(int); 32024897Sbde#endif 321109168Stjr#if __BSD_VISIBLE 322178722Sjhbvoid clearerr_unlocked(FILE *); 323178722Sjhbint feof_unlocked(FILE *); 324178722Sjhbint ferror_unlocked(FILE *); 325178722Sjhbint fileno_unlocked(FILE *); 326109168Stjr#endif 327100133Swollman 328100133Swollman#if __POSIX_VISIBLE >= 200112 329102227Smikeint fseeko(FILE *, __off_t, int); 330102227Smike__off_t ftello(FILE *); 33124897Sbde#endif 332100133Swollman 333100133Swollman#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 334100133Swollmanint getw(FILE *); 335100133Swollmanint putw(int, FILE *); 336100133Swollman#endif /* BSD or X/Open before issue 6 */ 337100133Swollman 338100133Swollman#if __XSI_VISIBLE 339100133Swollmanchar *tempnam(const char *, const char *); 34024897Sbde#endif 34124897Sbde 342189136Sdas#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 343189136Sdasssize_t getdelim(char ** __restrict, size_t * __restrict, int, 344189136Sdas FILE * __restrict); 345189355Sdasint renameat(int, const char *, int, const char *); 346189356Sdasint vdprintf(int, const char * __restrict, __va_list); 347189136Sdas 34824897Sbde/* 349189356Sdas * Every programmer and his dog wrote functions called getline() and dprintf() 350189356Sdas * before POSIX.1-2008 came along and decided to usurp the names, so we 351189356Sdas * don't prototype them by default unless one of the following is true: 352189356Sdas * a) the app has requested them specifically by defining _WITH_GETLINE or 353189356Sdas * _WITH_DPRINTF, respectively 354189136Sdas * b) the app has requested a POSIX.1-2008 environment via _POSIX_C_SOURCE 355189136Sdas * c) the app defines a GNUism such as _BSD_SOURCE or _GNU_SOURCE 356189136Sdas */ 357189136Sdas#ifndef _WITH_GETLINE 358189136Sdas#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 359189136Sdas#define _WITH_GETLINE 360189136Sdas#elif defined(_POSIX_C_SOURCE) 361189818Sdas#if _POSIX_C_SOURCE >= 200809 362189136Sdas#define _WITH_GETLINE 363189136Sdas#endif 364189136Sdas#endif 365189136Sdas#endif 366189136Sdas 367189136Sdas#ifdef _WITH_GETLINE 368189136Sdasssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); 369189136Sdas#endif 370189136Sdas 371189356Sdas#ifndef _WITH_DPRINTF 372189356Sdas#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 373189356Sdas#define _WITH_DPRINTF 374189356Sdas#elif defined(_POSIX_C_SOURCE) 375189818Sdas#if _POSIX_C_SOURCE >= 200809 376189356Sdas#define _WITH_DPRINTF 377189356Sdas#endif 378189356Sdas#endif 379189356Sdas#endif 380189356Sdas 381189356Sdas#ifdef _WITH_DPRINTF 382190409Sdasint (dprintf)(int, const char * __restrict, ...); 383189356Sdas#endif 384189356Sdas 385189136Sdas#endif /* __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 */ 386189136Sdas 387189136Sdas/* 3881539Srgrimes * Routines that are purely local. 3891539Srgrimes */ 390100133Swollman#if __BSD_VISIBLE 39193032Simpint asprintf(char **, const char *, ...) __printflike(2, 3); 39293032Simpchar *ctermid_r(char *); 393178722Sjhbvoid fcloseall(void); 39493032Simpchar *fgetln(FILE *, size_t *); 395194801Sdelphijconst char *fmtcheck(const char *, const char *) __format_arg(2); 39693032Simpint fpurge(FILE *); 39793032Simpvoid setbuffer(FILE *, char *, int); 39893032Simpint setlinebuf(FILE *); 399102227Smikeint vasprintf(char **, const char *, __va_list) 40037614Sbde __printflike(2, 0); 4011539Srgrimes 4021539Srgrimes/* 403100133Swollman * The system error table contains messages for the first sys_nerr 404100133Swollman * positive errno values. Use strerror() or strerror_r() from <string.h> 405100133Swollman * instead. 406100133Swollman */ 407228468Sedextern const int sys_nerr; 408228468Sedextern const char * const sys_errlist[]; 409100133Swollman 410100133Swollman/* 4111539Srgrimes * Stdio function-access interface. 4121539Srgrimes */ 41393032SimpFILE *funopen(const void *, 41475818Sobrien int (*)(void *, char *, int), 41575818Sobrien int (*)(void *, const char *, int), 41675818Sobrien fpos_t (*)(void *, fpos_t, int), 41793032Simp int (*)(void *)); 4181539Srgrimes#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) 4191539Srgrimes#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) 4201539Srgrimes 4211539Srgrimes/* 422100133Swollman * Portability hacks. See <sys/types.h>. 423100133Swollman */ 424100133Swollman#ifndef _FTRUNCATE_DECLARED 425100133Swollman#define _FTRUNCATE_DECLARED 426102227Smikeint ftruncate(int, __off_t); 427100133Swollman#endif 428100133Swollman#ifndef _LSEEK_DECLARED 429100133Swollman#define _LSEEK_DECLARED 430102227Smike__off_t lseek(int, __off_t, int); 431100133Swollman#endif 432100133Swollman#ifndef _MMAP_DECLARED 433100133Swollman#define _MMAP_DECLARED 434102227Smikevoid *mmap(void *, size_t, int, int, int, __off_t); 435100133Swollman#endif 436100133Swollman#ifndef _TRUNCATE_DECLARED 437100133Swollman#define _TRUNCATE_DECLARED 438102227Smikeint truncate(const char *, __off_t); 439100133Swollman#endif 440100133Swollman#endif /* __BSD_VISIBLE */ 441100133Swollman 442178778Sjhb/* 443178778Sjhb * Functions internal to the implementation. 444178778Sjhb */ 445178778Sjhbint __srget(FILE *); 446178778Sjhbint __swbuf(int, FILE *); 447178778Sjhb 448178778Sjhb/* 449178778Sjhb * The __sfoo macros are here so that we can 450178778Sjhb * define function versions in the C library. 451178778Sjhb */ 452178778Sjhb#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 453178778Sjhb#if defined(__GNUC__) && defined(__STDC__) 454178778Sjhbstatic __inline int __sputc(int _c, FILE *_p) { 455178778Sjhb if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) 456178778Sjhb return (*_p->_p++ = _c); 457178778Sjhb else 458178778Sjhb return (__swbuf(_c, _p)); 459178778Sjhb} 460178778Sjhb#else 461178778Sjhb/* 462178778Sjhb * This has been tuned to generate reasonable code on the vax using pcc. 463178778Sjhb */ 464178778Sjhb#define __sputc(c, p) \ 465178778Sjhb (--(p)->_w < 0 ? \ 466178778Sjhb (p)->_w >= (p)->_lbfsize ? \ 467178778Sjhb (*(p)->_p = (c)), *(p)->_p != '\n' ? \ 468178778Sjhb (int)*(p)->_p++ : \ 469178778Sjhb __swbuf('\n', p) : \ 470178778Sjhb __swbuf((int)(c), p) : \ 471178778Sjhb (*(p)->_p = (c), (int)*(p)->_p++)) 472178778Sjhb#endif 473227487Stheraven#ifndef __cplusplus 474178778Sjhb 475178778Sjhb#define __sfeof(p) (((p)->_flags & __SEOF) != 0) 476178778Sjhb#define __sferror(p) (((p)->_flags & __SERR) != 0) 477178778Sjhb#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) 478178778Sjhb#define __sfileno(p) ((p)->_file) 479178778Sjhb 480178778Sjhbextern int __isthreaded; 481178778Sjhb 482178778Sjhb#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) 483178778Sjhb#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) 484178778Sjhb#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) 485178778Sjhb 486178778Sjhb#if __POSIX_VISIBLE 487178778Sjhb#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) 488178778Sjhb#endif 489178778Sjhb 490178778Sjhb#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) 491178778Sjhb#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) 492178778Sjhb 493178778Sjhb#define getchar() getc(stdin) 494178778Sjhb#define putchar(x) putc(x, stdout) 495178778Sjhb 496178778Sjhb#if __BSD_VISIBLE 497178778Sjhb/* 498178778Sjhb * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 499178778Sjhb * B.8.2.7 for the rationale behind the *_unlocked() macros. 500178778Sjhb */ 501178778Sjhb#define feof_unlocked(p) __sfeof(p) 502178778Sjhb#define ferror_unlocked(p) __sferror(p) 503178778Sjhb#define clearerr_unlocked(p) __sclearerr(p) 504178778Sjhb#define fileno_unlocked(p) __sfileno(p) 505178778Sjhb#endif 506178778Sjhb#if __POSIX_VISIBLE >= 199506 507178778Sjhb#define getc_unlocked(fp) __sgetc(fp) 508178778Sjhb#define putc_unlocked(x, fp) __sputc(x, fp) 509178778Sjhb 510178778Sjhb#define getchar_unlocked() getc_unlocked(stdin) 511178778Sjhb#define putchar_unlocked(x) putc_unlocked(x, stdout) 512178778Sjhb#endif 513227487Stheraven#endif /* __cplusplus */ 514178778Sjhb 515100133Swollman__END_DECLS 51624897Sbde#endif /* !_STDIO_H_ */ 517