/* $NetBSD: stdio.h,v 1.75 2010/01/11 20:39:29 joerg Exp $ */ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)stdio.h 8.5 (Berkeley) 4/29/95 */ #ifndef _STDIO_H_ #define _STDIO_H_ #include #include #include #include #ifdef _BSD_SIZE_T_ typedef _BSD_SIZE_T_ size_t; #undef _BSD_SIZE_T_ #endif #ifdef _BSD_SSIZE_T_ typedef _BSD_SSIZE_T_ ssize_t; #undef _BSD_SSIZE_T_ #endif #include /* * This is fairly grotesque, but pure ANSI code must not inspect the * innards of an fpos_t anyway. The library internally uses off_t, * which we assume is exactly as big as eight chars. */ #if (!defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)) || defined(_LIBC) typedef __off_t fpos_t; #else typedef struct __sfpos { __off_t _pos; } fpos_t; #endif #define _FSTDIO /* Define for new stdio with functions. */ /* * NB: to fit things in six character monocase externals, the stdio * code uses the prefix `__s' for stdio objects, typically followed * by a three-character attempt at a mnemonic. */ /* stdio buffers */ struct __sbuf { unsigned char *_base; int _size; }; /* * stdio state variables. * * The following always hold: * * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), * _lbfsize is -_bf._size, else _lbfsize is 0 * if _flags&__SRD, _w is 0 * if _flags&__SWR, _r is 0 * * This ensures that the getc and putc macros (or inline functions) never * try to write or read from a file that is in `read' or `write' mode. * (Moreover, they can, and do, automatically switch from read mode to * write mode, and back, on "r+" and "w+" files.) * * _lbfsize is used only to make the inline line-buffered output stream * code as compact as possible. * * _ub, _up, and _ur are used when ungetc() pushes back more characters * than fit in the current _bf, or when ungetc() pushes back a character * that does not match the previous one in _bf. When this happens, * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. * * NB: see WARNING above before changing the layout of this structure! */ typedef struct __sFILE { unsigned char *_p; /* current position in (some) buffer */ int _r; /* read space left for getc() */ int _w; /* write space left for putc() */ unsigned short _flags; /* flags, below; this FILE is free if 0 */ short _file; /* fileno, if Unix descriptor, else -1 */ struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */ int _lbfsize; /* 0 or -_bf._size, for inline putc */ /* operations */ void *_cookie; /* cookie passed to io functions */ int (*_close)(void *); int (*_read) (void *, char *, int); fpos_t (*_seek) (void *, fpos_t, int); int (*_write)(void *, const char *, int); /* file extension */ struct __sbuf _ext; /* separate buffer for long sequences of ungetc() */ unsigned char *_up; /* saved _p when _p is doing ungetc data */ int _ur; /* saved _r when _r is counting ungetc data */ /* tricks to meet minimum requirements even when malloc() fails */ unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ unsigned char _nbuf[1]; /* guarantee a getc() buffer */ /* Formerly used by fgetln/fgetwln; kept for binary compatibility */ struct __sbuf _lb__unused; /* Unix stdio files get aligned to block boundaries on fseek() */ int _blksize; /* stat.st_blksize (may be != _bf._size) */ fpos_t _offset; /* current lseek offset */ } FILE; __BEGIN_DECLS extern FILE __sF[]; __END_DECLS #define __SLBF 0x0001 /* line buffered */ #define __SNBF 0x0002 /* unbuffered */ #define __SRD 0x0004 /* OK to read */ #define __SWR 0x0008 /* OK to write */ /* RD and WR are never simultaneously asserted */ #define __SRW 0x0010 /* open for reading & writing */ #define __SEOF 0x0020 /* found EOF */ #define __SERR 0x0040 /* found error */ #define __SMBF 0x0080 /* _buf is from malloc */ #define __SAPP 0x0100 /* fdopen()ed in append mode */ #define __SSTR 0x0200 /* this is an sprintf/snprintf string */ #define __SOPT 0x0400 /* do fseek() optimization */ #define __SNPT 0x0800 /* do not do fseek() optimization */ #define __SOFF 0x1000 /* set iff _offset is in fact correct */ #define __SMOD 0x2000 /* true => fgetln modified _p text */ #define __SALC 0x4000 /* allocate string space dynamically */ /* * The following three definitions are for ANSI C, which took them * from System V, which brilliantly took internal interface macros and * made them official arguments to setvbuf(), without renaming them. * Hence, these ugly _IOxxx names are *supposed* to appear in user code. * * Although numbered as their counterparts above, the implementation * does not rely on this. */ #define _IOFBF 0 /* setvbuf should set fully buffered */ #define _IOLBF 1 /* setvbuf should set line buffered */ #define _IONBF 2 /* setvbuf should set unbuffered */ #define BUFSIZ 1024 /* size of buffer used by setbuf */ #define EOF (-1) /* * FOPEN_MAX is a minimum maximum, and is the number of streams that * stdio can provide without attempting to allocate further resources * (which could fail). Do not use this for anything. */ /* must be == _POSIX_STREAM_MAX */ #define FOPEN_MAX 20 /* must be <= OPEN_MAX */ #define FILENAME_MAX 1024 /* must be <= PATH_MAX */ /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) #define P_tmpdir "/var/tmp/" #endif #define L_tmpnam 1024 /* XXX must be == PATH_MAX */ /* Always ensure that this is consistent with */ #ifndef TMP_MAX #define TMP_MAX 308915776 /* Legacy */ #endif /* Always ensure that these are consistent with and ! */ #ifndef SEEK_SET #define SEEK_SET 0 /* set file offset to offset */ #endif #ifndef SEEK_CUR #define SEEK_CUR 1 /* set file offset to current plus offset */ #endif #ifndef SEEK_END #define SEEK_END 2 /* set file offset to EOF plus offset */ #endif #define stdin (&__sF[0]) #define stdout (&__sF[1]) #define stderr (&__sF[2]) /* * Functions defined in ANSI C standard. */ __BEGIN_DECLS void clearerr(FILE *); int fclose(FILE *); int feof(FILE *); int ferror(FILE *); int fflush(FILE *); int fgetc(FILE *); int fgetpos(FILE * __restrict, fpos_t * __restrict); char *fgets(char * __restrict, int, FILE * __restrict); FILE *fopen(const char * __restrict , const char * __restrict); int fprintf(FILE * __restrict , const char * __restrict, ...) __attribute__((__format__(__printf__, 2, 3))); int fputc(int, FILE *); int fputs(const char * __restrict, FILE * __restrict); size_t fread(void * __restrict, size_t, size_t, FILE * __restrict); FILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict); int fscanf(FILE * __restrict, const char * __restrict, ...) __attribute__((__format__(__scanf__, 2, 3))); int fseek(FILE *, long, int); int fsetpos(FILE *, const fpos_t *); long ftell(FILE *); size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict); int getc(FILE *); int getchar(void); ssize_t getdelim(char ** __restrict, size_t * __restrict, int, FILE * __restrict); ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); void perror(const char *); int printf(const char * __restrict, ...) __attribute__((__format__(__printf__, 1, 2))); int putc(int, FILE *); int putchar(int); int puts(const char *); int remove(const char *); void rewind(FILE *); int scanf(const char * __restrict, ...) __attribute__((__format__(__scanf__, 1, 2))); void setbuf(FILE * __restrict, char * __restrict); int setvbuf(FILE * __restrict, char * __restrict, int, size_t); int sscanf(const char * __restrict, const char * __restrict, ...) __attribute__((__format__(__scanf__, 2, 3))); FILE *tmpfile(void); int ungetc(int, FILE *); int vfprintf(FILE * __restrict, const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__printf__, 2, 0))); int vprintf(const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__printf__, 1, 0))); #ifndef __AUDIT__ char *gets(char *); int sprintf(char * __restrict, const char * __restrict, ...) __attribute__((__format__(__printf__, 2, 3))); char *tmpnam(char *); int vsprintf(char * __restrict, const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__printf__, 2, 0))); #endif #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) int rename (const char *, const char *) __RENAME(__posix_rename); #else int rename (const char *, const char *); #endif __END_DECLS /* * IEEE Std 1003.1-90 */ #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ defined(_NETBSD_SOURCE) #define L_ctermid 1024 /* size for ctermid(); PATH_MAX */ #define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */ __BEGIN_DECLS char *ctermid(char *); #ifndef __CUSERID_DECLARED #define __CUSERID_DECLARED /* also declared in unistd.h */ char *cuserid(char *); #endif /* __CUSERID_DECLARED */ FILE *fdopen(int, const char *); int fileno(FILE *); __END_DECLS #endif /* not ANSI */ /* * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2 */ #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ defined(_REENTRANT) || defined(_NETBSD_SOURCE) __BEGIN_DECLS void flockfile(FILE *); int ftrylockfile(FILE *); void funlockfile(FILE *); int getc_unlocked(FILE *); int getchar_unlocked(void); int putc_unlocked(int, FILE *); int putchar_unlocked(int); __END_DECLS #endif /* _POSIX_C_SOURCE >= 1995056 || _XOPEN_SOURCE >= 500 || ... */ /* * Functions defined in POSIX 1003.2 and XPG2 or later. */ #if (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 2 || \ defined(_NETBSD_SOURCE) __BEGIN_DECLS int pclose(FILE *); FILE *popen(const char *, const char *); __END_DECLS #endif /* * Functions defined in ISO XPG4.2, ISO C99, POSIX 1003.1-2001 or later. */ #if ((__STDC_VERSION__ - 0) >= 199901L) || \ ((_POSIX_C_SOURCE - 0) >= 200112L) || \ (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \ ((_XOPEN_SOURCE - 0) >= 500) || \ defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE) __BEGIN_DECLS int snprintf(char * __restrict, size_t, const char * __restrict, ...) __attribute__((__format__(__printf__, 3, 4))); int vsnprintf(char * __restrict, size_t, const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__printf__, 3, 0))); __END_DECLS #endif /* * Functions defined in XPG4.2. */ #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) __BEGIN_DECLS int getw(FILE *); int putw(int, FILE *); #ifndef __AUDIT__ char *tempnam(const char *, const char *); #endif __END_DECLS #endif /* * X/Open CAE Specification Issue 5 Version 2 */ #if (_XOPEN_SOURCE - 0) >= 500 || defined(_LARGEFILE_SOURCE) || \ defined(_NETBSD_SOURCE) #ifndef off_t typedef __off_t off_t; #define off_t __off_t #endif /* off_t */ __BEGIN_DECLS int fseeko(FILE *, off_t, int); off_t ftello(FILE *); __END_DECLS #endif /* _XOPEN_SOURCE >= 500 || _LARGEFILE_SOURCE || _NETBSD_SOURCE */ /* * Functions defined in ISO C99. Still put under _NETBSD_SOURCE due to * backward compatible. */ #if defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE) __BEGIN_DECLS int vscanf(const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__scanf__, 1, 0))); int vfscanf(FILE * __restrict, const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__scanf__, 2, 0))); int vsscanf(const char * __restrict, const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__scanf__, 2, 0))); __END_DECLS #endif /* _ISOC99_SOURCE || _NETBSD_SOURCE */ /* * Routines that are purely local. */ #if defined(_NETBSD_SOURCE) #define FPARSELN_UNESCESC 0x01 #define FPARSELN_UNESCCONT 0x02 #define FPARSELN_UNESCCOMM 0x04 #define FPARSELN_UNESCREST 0x08 #define FPARSELN_UNESCALL 0x0f __BEGIN_DECLS int asprintf(char ** __restrict, const char * __restrict, ...) __attribute__((__format__(__printf__, 2, 3))); char *fgetln(FILE * __restrict, size_t * __restrict); char *fparseln(FILE *, size_t *, size_t *, const char[3], int); int fpurge(FILE *); void setbuffer(FILE *, char *, int); int setlinebuf(FILE *); int vasprintf(char ** __restrict, const char * __restrict, _BSD_VA_LIST_) __attribute__((__format__(__printf__, 2, 0))); const char *fmtcheck(const char *, const char *) __attribute__((__format_arg__(2))); __END_DECLS /* * Stdio function-access interface. */ __BEGIN_DECLS FILE *funopen(const void *, int (*)(void *, char *, int), int (*)(void *, const char *, int), fpos_t (*)(void *, fpos_t, int), int (*)(void *)); __END_DECLS #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) #endif /* _NETBSD_SOURCE */ /* * Functions internal to the implementation. */ __BEGIN_DECLS int __srget(FILE *); int __swbuf(int, FILE *); __END_DECLS /* * The __sfoo macros are here so that we can * define function versions in the C library. */ #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) #if defined(__GNUC__) && defined(__STDC__) static __inline int __sputc(int _c, FILE *_p) { if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) return (*_p->_p++ = _c); else return (__swbuf(_c, _p)); } #else /* * This has been tuned to generate reasonable code on the vax using pcc. */ #define __sputc(c, p) \ (--(p)->_w < 0 ? \ (p)->_w >= (p)->_lbfsize ? \ (*(p)->_p = (c)), *(p)->_p != '\n' ? \ (int)*(p)->_p++ : \ __swbuf('\n', p) : \ __swbuf((int)(c), p) : \ (*(p)->_p = (c), (int)*(p)->_p++)) #endif #define __sfeof(p) (((p)->_flags & __SEOF) != 0) #define __sferror(p) (((p)->_flags & __SERR) != 0) #define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) #define __sfileno(p) \ ((p)->_file == -1 ? -1 : (int)(unsigned short)(p)->_file) #ifndef __lint__ #if !defined(_REENTRANT) && !defined(_PTHREADS) #define feof(p) __sfeof(p) #define ferror(p) __sferror(p) #define clearerr(p) __sclearerr(p) #define getc(fp) __sgetc(fp) #define putc(x, fp) __sputc(x, fp) #endif /* !_REENTRANT && !_PTHREADS */ #endif /* __lint__ */ #define getchar() getc(stdin) #define putchar(x) putc(x, stdout) #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ defined(_NETBSD_SOURCE) #if !defined(_REENTRANT) && !defined(_PTHREADS) #define fileno(p) __sfileno(p) #endif /* !_REENTRANT && !_PTHREADS */ #endif /* !_ANSI_SOURCE */ #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ defined(_REENTRANT) || defined(_NETBSD_SOURCE) #define getc_unlocked(fp) __sgetc(fp) #define putc_unlocked(x, fp) __sputc(x, fp) #define getchar_unlocked() getc_unlocked(stdin) #define putchar_unlocked(x) putc_unlocked(x, stdout) #endif /* _POSIX_C_SOURCE >= 199506 || _XOPEN_SOURCE >= 500 || _REENTRANT... */ #if _FORTIFY_SOURCE > 0 #include #endif #endif /* _STDIO_H_ */