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IABSD.fr/src/include/stdio.h
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/* $OpenBSD: stdio.h,v 1.56 2024/08/07 05:15:28 guenther Exp $ */ /* $NetBSD: stdio.h,v 1.18 1996/04/25 18:29:21 jtc Exp $ */ /*- * Copyright (c) 1990 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 5.17 (Berkeley) 6/3/91 */ #ifndef _STDIO_H_ #define _STDIO_H_ #include <sys/cdefs.h> #include <sys/_null.h> #include <sys/_types.h> #if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE #include <sys/types.h> /* XXX should be removed */ #endif #ifndef _SIZE_T_DEFINED_ #define _SIZE_T_DEFINED_ typedef __size_t size_t; #endif #ifndef _OFF_T_DEFINED_ #define _OFF_T_DEFINED_ typedef __off_t off_t; #endif #define _FSTDIO /* Define for new stdio with functions. */ typedef off_t fpos_t; /* stdio file position type */ /* * 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. */ 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() */ 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); /* extension data, to avoid further ABI breakage */ struct __sbuf _ext; /* data 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 */ /* separate buffer for fgetln() when line crosses buffer boundary */ struct __sbuf _lb; /* buffer for fgetln() */ /* 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() optimisation */ #define __SNPT 0x0800 /* do not do fseek() optimisation */ #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 */ #define __SIGN 0x8000 /* ignore this file in _fwalk */ /* * 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 should be the number of descriptors * that the kernel can provide without allocation of a resource that can * fail without the process sleeping. Do not use this for anything. */ #define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */ #define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */ /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ #if __BSD_VISIBLE || __XPG_VISIBLE #define P_tmpdir "/tmp/" #endif #define L_tmpnam 1024 /* XXX must be == PATH_MAX */ #define TMP_MAX 0x7fffffff /* more, but don't overflow int */ #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 *); #if __POSIX_VISIBLE >= 200809 int dprintf(int, const char * __restrict, ...) __attribute__((__format__ (printf, 2, 3))) __attribute__((__nonnull__ (2))); #endif int fclose(FILE *); int feof(FILE *); int ferror(FILE *); int fflush(FILE *); int fgetc(FILE *); int fgetpos(FILE *, fpos_t *); char *fgets(char *, int, FILE *) __attribute__((__bounded__ (__string__,1,2))); FILE *fopen(const char *, const char *); int fprintf(FILE *, const char * __restrict, ...); int fputc(int, FILE *); int fputs(const char *, FILE *); size_t fread(void *, size_t, size_t, FILE *) __attribute__((__bounded__ (__size__,1,3,2))); FILE *freopen(const char *, const char *, FILE *); int fscanf(FILE *, const char *, ...); int fseek(FILE *, long, int); int fseeko(FILE *, off_t, int); int fsetpos(FILE *, const fpos_t *); long ftell(FILE *); off_t ftello(FILE *); size_t fwrite(const void *, size_t, size_t, FILE *) __attribute__((__bounded__ (__size__,1,3,2))); int getc(FILE *); int getchar(void); #if __POSIX_VISIBLE >= 200809 ssize_t getdelim(char ** __restrict, size_t * __restrict, int, FILE * __restrict); ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); #endif #if __BSD_VISIBLE && !defined(__SYS_ERRLIST) #define __SYS_ERRLIST extern int sys_nerr; /* perror(3) external variables */ extern char *sys_errlist[]; #endif void perror(const char *); int printf(const char * __restrict, ...); int putc(int, FILE *); int putchar(int); int puts(const char *); int remove(const char *); int rename(const char *, const char *); #if __POSIX_VISIBLE >= 200809 int renameat(int, const char *, int, const char *); #endif void rewind(FILE *); int scanf(const char *, ...); void setbuf(FILE *, char *); int setvbuf(FILE *, char *, int, size_t); int sprintf(char * __restrict, const char * __restrict, ...); int sscanf(const char *, const char *, ...); FILE *tmpfile(void); char *tmpnam(char *); int ungetc(int, FILE *); int vfprintf(FILE *, const char * __restrict, __va_list); int vprintf(const char * __restrict, __va_list); int vsprintf(char * __restrict, const char * __restrict, __va_list); #if __POSIX_VISIBLE >= 200809 int vdprintf(int, const char * __restrict, __va_list) __attribute__((__format__ (printf, 2, 0))) __attribute__((__nonnull__ (2))); #endif #if __ISO_C_VISIBLE >= 1999 || __XPG_VISIBLE >= 500 || __BSD_VISIBLE int snprintf(char * __restrict, size_t, const char * __restrict, ...) __attribute__((__format__ (printf, 3, 4))) __attribute__((__nonnull__ (3))) __attribute__((__bounded__ (__string__,1,2))); int vsnprintf(char * __restrict, size_t, const char * __restrict, __va_list) __attribute__((__format__ (printf, 3, 0))) __attribute__((__nonnull__ (3))) __attribute__((__bounded__(__string__,1,2))); #endif /* __ISO_C_VISIBLE >= 1999 || __XPG_VISIBLE >= 500 || __BSD_VISIBLE */ #if __ISO_C_VISIBLE >= 1999 || __BSD_VISIBLE int vfscanf(FILE *, const char *, __va_list) __attribute__((__format__ (scanf, 2, 0))) __attribute__((__nonnull__ (2))); int vscanf(const char *, __va_list) __attribute__((__format__ (scanf, 1, 0))) __attribute__((__nonnull__ (1))); int vsscanf(const char *, const char *, __va_list) __attribute__((__format__ (scanf, 2, 0))) __attribute__((__nonnull__ (2))); #endif /* __ISO_C_VISIBLE >= 1999 || __BSD_VISIBLE */ __END_DECLS /* * Functions defined in POSIX 1003.1. */ #if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE #define L_ctermid 1024 /* size for ctermid(); PATH_MAX */ __BEGIN_DECLS char *ctermid(char *); FILE *fdopen(int, const char *); int fileno(FILE *); #if __POSIX_VISIBLE >= 199209 int pclose(FILE *); FILE *popen(const char *, const char *); #endif #if __POSIX_VISIBLE >= 199506 void flockfile(FILE *); int ftrylockfile(FILE *); void funlockfile(FILE *); /* * These are normally used through macros as defined below, but POSIX * requires functions as well. */ int getc_unlocked(FILE *); int getchar_unlocked(void); int putc_unlocked(int, FILE *); int putchar_unlocked(int); #endif /* __POSIX_VISIBLE >= 199506 */ #if __POSIX_VISIBLE >= 200809 FILE *fmemopen(void *, size_t, const char *); FILE *open_memstream(char **, size_t *); #endif /* __POSIX_VISIBLE >= 200809 */ #if __XPG_VISIBLE char *tempnam(const char *, const char *); #endif #if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE int asprintf(char ** __restrict, const char * __restrict, ...) __attribute__((__format__ (printf, 2, 3))) __attribute__((__nonnull__ (2))); int vasprintf(char ** __restrict, const char * __restrict, __va_list) __attribute__((__format__ (printf, 2, 0))) __attribute__((__nonnull__ (2))); #endif /* __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE */ __END_DECLS #endif /* __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE */ /* * Routines that are purely local. */ #if __BSD_VISIBLE __BEGIN_DECLS char *fgetln(FILE *, size_t *); int fpurge(FILE *); int getw(FILE *); int putw(int, FILE *); void setbuffer(FILE *, char *, int); int setlinebuf(FILE *); __END_DECLS /* * Stdio function-access interface. */ __BEGIN_DECLS FILE *funopen(const void *, int (*)(void *, char *, int), int (*)(void *, const char *, int), off_t (*)(void *, off_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 /* __BSD_VISIBLE */ /* * 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++)) 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)); } #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) extern int __isthreaded; #define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) #define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) #define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) #if __POSIX_VISIBLE #define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) #endif #define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) #if __BSD_VISIBLE /* * The macro implementations of putc and putc_unlocked are not * fully POSIX compliant; they do not set errno on failure */ #define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) #endif /* __BSD_VISIBLE */ #if __POSIX_VISIBLE >= 199506 #define getc_unlocked(fp) __sgetc(fp) /* * The macro implementations of putc and putc_unlocked are not * fully POSIX compliant; they do not set errno on failure */ #if __BSD_VISIBLE #define putc_unlocked(x, fp) __sputc(x, fp) #endif /* __BSD_VISIBLE */ #endif /* __POSIX_VISIBLE >= 199506 */ #define getchar() getc(stdin) #define putchar(x) putc(x, stdout) #define getchar_unlocked() getc_unlocked(stdin) #define putchar_unlocked(c) putc_unlocked(c, stdout) #endif /* _STDIO_H_ */