1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Chris Torek. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)stdio.h 8.5 (Berkeley) 4/29/95 33 * $FreeBSD$ 34 */ 35 36#ifndef _STDIO_H_ 37#define _STDIO_H_ 38 39#include <sys/cdefs.h> 40#include <sys/_null.h> 41#include <sys/_types.h> 42 43typedef __off_t fpos_t; 44 45#ifndef _SIZE_T_DECLARED 46typedef __size_t size_t; 47#define _SIZE_T_DECLARED 48#endif 49 50#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 51#ifndef _OFF_T_DECLARED 52#define _OFF_T_DECLARED 53typedef __off_t off_t; 54#endif 55#ifndef _SSIZE_T_DECLARED 56#define _SSIZE_T_DECLARED 57typedef __ssize_t ssize_t; 58#endif 59#endif 60 61#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE 62#ifndef _VA_LIST_DECLARED 63typedef __va_list va_list; 64#define _VA_LIST_DECLARED 65#endif 66#endif 67 68#define _FSTDIO /* Define for new stdio with functions. */ 69 70/* 71 * NB: to fit things in six character monocase externals, the stdio 72 * code uses the prefix `__s' for stdio objects, typically followed 73 * by a three-character attempt at a mnemonic. 74 */ 75 76/* stdio buffers */ 77struct __sbuf { 78 unsigned char *_base; 79 int _size; 80}; 81 82/* 83 * stdio state variables. 84 * 85 * The following always hold: 86 * 87 * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), 88 * _lbfsize is -_bf._size, else _lbfsize is 0 89 * if _flags&__SRD, _w is 0 90 * if _flags&__SWR, _r is 0 91 * 92 * This ensures that the getc and putc macros (or inline functions) never 93 * try to write or read from a file that is in `read' or `write' mode. 94 * (Moreover, they can, and do, automatically switch from read mode to 95 * write mode, and back, on "r+" and "w+" files.) 96 * 97 * _lbfsize is used only to make the inline line-buffered output stream 98 * code as compact as possible. 99 * 100 * _ub, _up, and _ur are used when ungetc() pushes back more characters 101 * than fit in the current _bf, or when ungetc() pushes back a character 102 * that does not match the previous one in _bf. When this happens, 103 * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff 104 * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. 105 * 106 * Certain members of __sFILE are accessed directly via macros or 107 * inline functions. To preserve ABI compat, these members must not 108 * be disturbed. These members are marked below with (*). 109 */ 110struct __sFILE { 111 unsigned char *_p; /* (*) current position in (some) buffer */ 112 int _r; /* (*) read space left for getc() */ 113 int _w; /* (*) write space left for putc() */ 114 short _flags; /* (*) flags, below; this FILE is free if 0 */ 115 short _file; /* (*) fileno, if Unix descriptor, else -1 */ 116 struct __sbuf _bf; /* (*) the buffer (at least 1 byte, if !NULL) */ 117 int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */ 118 119 /* operations */ 120 void *_cookie; /* (*) cookie passed to io functions */ 121 int (*_close)(void *); 122 int (*_read)(void *, char *, int); 123 fpos_t (*_seek)(void *, fpos_t, int); 124 int (*_write)(void *, const char *, int); 125 126 /* separate buffer for long sequences of ungetc() */ 127 struct __sbuf _ub; /* ungetc buffer */ 128 unsigned char *_up; /* saved _p when _p is doing ungetc data */ 129 int _ur; /* saved _r when _r is counting ungetc data */ 130 131 /* tricks to meet minimum requirements even when malloc() fails */ 132 unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ 133 unsigned char _nbuf[1]; /* guarantee a getc() buffer */ 134 135 /* separate buffer for fgetln() when line crosses buffer boundary */ 136 struct __sbuf _lb; /* buffer for fgetln() */ 137 138 /* Unix stdio files get aligned to block boundaries on fseek() */ 139 int _blksize; /* stat.st_blksize (may be != _bf._size) */ 140 fpos_t _offset; /* current lseek offset */ 141 142 struct pthread_mutex *_fl_mutex; /* used for MT-safety */ 143 struct pthread *_fl_owner; /* current owner */ 144 int _fl_count; /* recursive lock count */ 145 int _orientation; /* orientation for fwide() */ 146 __mbstate_t _mbstate; /* multibyte conversion state */ 147}; 148#ifndef _STDFILE_DECLARED 149#define _STDFILE_DECLARED 150typedef struct __sFILE FILE; 151#endif 152#ifndef _STDSTREAM_DECLARED 153__BEGIN_DECLS 154extern FILE *__stdinp; 155extern FILE *__stdoutp; 156extern FILE *__stderrp; 157__END_DECLS 158#define _STDSTREAM_DECLARED 159#endif 160 161#define __SLBF 0x0001 /* line buffered */ 162#define __SNBF 0x0002 /* unbuffered */ 163#define __SRD 0x0004 /* OK to read */ 164#define __SWR 0x0008 /* OK to write */ 165 /* RD and WR are never simultaneously asserted */ 166#define __SRW 0x0010 /* open for reading & writing */ 167#define __SEOF 0x0020 /* found EOF */ 168#define __SERR 0x0040 /* found error */ 169#define __SMBF 0x0080 /* _buf is from malloc */ 170#define __SAPP 0x0100 /* fdopen()ed in append mode */ 171#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ 172#define __SOPT 0x0400 /* do fseek() optimization */ 173#define __SNPT 0x0800 /* do not do fseek() optimization */ 174#define __SOFF 0x1000 /* set iff _offset is in fact correct */ 175#define __SMOD 0x2000 /* true => fgetln modified _p text */ 176#define __SALC 0x4000 /* allocate string space dynamically */ 177#define __SIGN 0x8000 /* ignore this file in _fwalk */ 178 179/* 180 * The following three definitions are for ANSI C, which took them 181 * from System V, which brilliantly took internal interface macros and 182 * made them official arguments to setvbuf(), without renaming them. 183 * Hence, these ugly _IOxxx names are *supposed* to appear in user code. 184 * 185 * Although numbered as their counterparts above, the implementation 186 * does not rely on this. 187 */ 188#define _IOFBF 0 /* setvbuf should set fully buffered */ 189#define _IOLBF 1 /* setvbuf should set line buffered */ 190#define _IONBF 2 /* setvbuf should set unbuffered */ 191 192#define BUFSIZ 1024 /* size of buffer used by setbuf */ 193#define EOF (-1) 194 195/* 196 * FOPEN_MAX is a minimum maximum, and is the number of streams that 197 * stdio can provide without attempting to allocate further resources 198 * (which could fail). Do not use this for anything. 199 */ 200 /* must be == _POSIX_STREAM_MAX <limits.h> */ 201#ifndef FOPEN_MAX 202#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */ 203#endif 204#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */ 205 206/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ 207#if __XSI_VISIBLE 208#define P_tmpdir "/tmp/" 209#endif 210#define L_tmpnam 1024 /* XXX must be == PATH_MAX */ 211#define TMP_MAX 308915776 212 213#ifndef SEEK_SET 214#define SEEK_SET 0 /* set file offset to offset */ 215#endif 216#ifndef SEEK_CUR 217#define SEEK_CUR 1 /* set file offset to current plus offset */ 218#endif 219#ifndef SEEK_END 220#define SEEK_END 2 /* set file offset to EOF plus offset */ 221#endif 222 223#define stdin __stdinp 224#define stdout __stdoutp 225#define stderr __stderrp 226 227__BEGIN_DECLS 228#ifdef _XLOCALE_H_ 229#include <xlocale/_stdio.h> 230#endif 231/* 232 * Functions defined in ANSI C standard. 233 */ 234void clearerr(FILE *); 235int fclose(FILE *); 236int feof(FILE *); 237int ferror(FILE *); 238int fflush(FILE *); 239int fgetc(FILE *); 240int fgetpos(FILE * __restrict, fpos_t * __restrict); 241char *fgets(char * __restrict, int, FILE * __restrict); 242FILE *fopen(const char * __restrict, const char * __restrict); 243int fprintf(FILE * __restrict, const char * __restrict, ...); 244int fputc(int, FILE *); 245int fputs(const char * __restrict, FILE * __restrict); 246size_t fread(void * __restrict, size_t, size_t, FILE * __restrict); 247FILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict); 248int fscanf(FILE * __restrict, const char * __restrict, ...); 249int fseek(FILE *, long, int); 250int fsetpos(FILE *, const fpos_t *); 251long ftell(FILE *); 252size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict); 253int getc(FILE *); 254int getchar(void); 255char *gets(char *); 256void perror(const char *); 257int printf(const char * __restrict, ...); 258int putc(int, FILE *); 259int putchar(int); 260int puts(const char *); 261int remove(const char *); 262int rename(const char *, const char *); 263void rewind(FILE *); 264int scanf(const char * __restrict, ...); 265void setbuf(FILE * __restrict, char * __restrict); 266int setvbuf(FILE * __restrict, char * __restrict, int, size_t); 267int sprintf(char * __restrict, const char * __restrict, ...); 268int sscanf(const char * __restrict, const char * __restrict, ...); 269FILE *tmpfile(void); 270char *tmpnam(char *); 271int ungetc(int, FILE *); 272int vfprintf(FILE * __restrict, const char * __restrict, 273 __va_list); 274int vprintf(const char * __restrict, __va_list); 275int vsprintf(char * __restrict, const char * __restrict, 276 __va_list); 277 278#if __ISO_C_VISIBLE >= 1999 279int snprintf(char * __restrict, size_t, const char * __restrict, 280 ...) __printflike(3, 4); 281int vfscanf(FILE * __restrict, const char * __restrict, __va_list) 282 __scanflike(2, 0); 283int vscanf(const char * __restrict, __va_list) __scanflike(1, 0); 284int vsnprintf(char * __restrict, size_t, const char * __restrict, 285 __va_list) __printflike(3, 0); 286int vsscanf(const char * __restrict, const char * __restrict, __va_list) 287 __scanflike(2, 0); 288#endif 289 290/* 291 * Functions defined in all versions of POSIX 1003.1. 292 */ 293#if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506 294#define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */ 295#endif 296 297#if __POSIX_VISIBLE 298#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */ 299 300char *ctermid(char *); 301FILE *fdopen(int, const char *); 302int fileno(FILE *); 303#endif /* __POSIX_VISIBLE */ 304 305#if __POSIX_VISIBLE >= 199209 306int pclose(FILE *); 307FILE *popen(const char *, const char *); 308#endif 309 310#if __POSIX_VISIBLE >= 199506 311int ftrylockfile(FILE *); 312void flockfile(FILE *); 313void funlockfile(FILE *); 314 315/* 316 * These are normally used through macros as defined below, but POSIX 317 * requires functions as well. 318 */ 319int getc_unlocked(FILE *); 320int getchar_unlocked(void); 321int putc_unlocked(int, FILE *); 322int putchar_unlocked(int); 323#endif 324#if __BSD_VISIBLE 325void clearerr_unlocked(FILE *); 326int feof_unlocked(FILE *); 327int ferror_unlocked(FILE *); 328int fileno_unlocked(FILE *); 329#endif 330 331#if __POSIX_VISIBLE >= 200112 332int fseeko(FILE *, __off_t, int); 333__off_t ftello(FILE *); 334#endif 335 336#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 337int getw(FILE *); 338int putw(int, FILE *); 339#endif /* BSD or X/Open before issue 6 */ 340 341#if __XSI_VISIBLE 342char *tempnam(const char *, const char *); 343#endif 344 345#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 346FILE *fmemopen(void * __restrict, size_t, const char * __restrict); 347ssize_t getdelim(char ** __restrict, size_t * __restrict, int, 348 FILE * __restrict); 349FILE *open_memstream(char **, size_t *); 350int renameat(int, const char *, int, const char *); 351int vdprintf(int, const char * __restrict, __va_list); 352 353/* 354 * Every programmer and his dog wrote functions called getline() and dprintf() 355 * before POSIX.1-2008 came along and decided to usurp the names, so we 356 * don't prototype them by default unless one of the following is true: 357 * a) the app has requested them specifically by defining _WITH_GETLINE or 358 * _WITH_DPRINTF, respectively 359 * b) the app has requested a POSIX.1-2008 environment via _POSIX_C_SOURCE 360 * c) the app defines a GNUism such as _BSD_SOURCE or _GNU_SOURCE 361 */ 362#ifndef _WITH_GETLINE 363#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 364#define _WITH_GETLINE 365#elif defined(_POSIX_C_SOURCE) 366#if _POSIX_C_SOURCE >= 200809 367#define _WITH_GETLINE 368#endif 369#endif 370#endif 371 372#ifdef _WITH_GETLINE 373ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); 374#endif 375 376#ifndef _WITH_DPRINTF 377#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) 378#define _WITH_DPRINTF 379#elif defined(_POSIX_C_SOURCE) 380#if _POSIX_C_SOURCE >= 200809 381#define _WITH_DPRINTF 382#endif 383#endif 384#endif 385 386#ifdef _WITH_DPRINTF 387int (dprintf)(int, const char * __restrict, ...); 388#endif 389 390#endif /* __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 */ 391 392/* 393 * Routines that are purely local. 394 */ 395#if __BSD_VISIBLE 396int asprintf(char **, const char *, ...) __printflike(2, 3); 397char *ctermid_r(char *); 398void fcloseall(void); 399char *fgetln(FILE *, size_t *); 400const char *fmtcheck(const char *, const char *) __format_arg(2); 401int fpurge(FILE *); 402void setbuffer(FILE *, char *, int); 403int setlinebuf(FILE *); 404int vasprintf(char **, const char *, __va_list) 405 __printflike(2, 0); 406 407/* 408 * The system error table contains messages for the first sys_nerr 409 * positive errno values. Use strerror() or strerror_r() from <string.h> 410 * instead. 411 */ 412extern const int sys_nerr; 413extern const char * const sys_errlist[]; 414 415/* 416 * Stdio function-access interface. 417 */ 418FILE *funopen(const void *, 419 int (*)(void *, char *, int), 420 int (*)(void *, const char *, int), 421 fpos_t (*)(void *, fpos_t, int), 422 int (*)(void *)); 423#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) 424#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) 425 426/* 427 * Portability hacks. See <sys/types.h>. 428 */ 429#ifndef _FTRUNCATE_DECLARED 430#define _FTRUNCATE_DECLARED 431int ftruncate(int, __off_t); 432#endif 433#ifndef _LSEEK_DECLARED 434#define _LSEEK_DECLARED 435__off_t lseek(int, __off_t, int); 436#endif 437#ifndef _MMAP_DECLARED 438#define _MMAP_DECLARED 439void *mmap(void *, size_t, int, int, int, __off_t); 440#endif 441#ifndef _TRUNCATE_DECLARED 442#define _TRUNCATE_DECLARED 443int truncate(const char *, __off_t); 444#endif 445#endif /* __BSD_VISIBLE */ 446 447/* 448 * Functions internal to the implementation. 449 */ 450int __srget(FILE *); 451int __swbuf(int, FILE *); 452 453/* 454 * The __sfoo macros are here so that we can 455 * define function versions in the C library. 456 */ 457#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 458#if defined(__GNUC__) && defined(__STDC__) 459static __inline int __sputc(int _c, FILE *_p) { 460 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) 461 return (*_p->_p++ = _c); 462 else 463 return (__swbuf(_c, _p)); 464} 465#else 466/* 467 * This has been tuned to generate reasonable code on the vax using pcc. 468 */ 469#define __sputc(c, p) \ 470 (--(p)->_w < 0 ? \ 471 (p)->_w >= (p)->_lbfsize ? \ 472 (*(p)->_p = (c)), *(p)->_p != '\n' ? \ 473 (int)*(p)->_p++ : \ 474 __swbuf('\n', p) : \ 475 __swbuf((int)(c), p) : \ 476 (*(p)->_p = (c), (int)*(p)->_p++)) 477#endif 478 479extern int __isthreaded; 480 481#ifndef __cplusplus 482 483#define __sfeof(p) (((p)->_flags & __SEOF) != 0) 484#define __sferror(p) (((p)->_flags & __SERR) != 0) 485#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) 486#define __sfileno(p) ((p)->_file) 487 488 489#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) 490#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) 491#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) 492 493#if __POSIX_VISIBLE 494#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) 495#endif 496 497#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) 498#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) 499 500#define getchar() getc(stdin) 501#define putchar(x) putc(x, stdout) 502 503#if __BSD_VISIBLE 504/* 505 * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 506 * B.8.2.7 for the rationale behind the *_unlocked() macros. 507 */ 508#define feof_unlocked(p) __sfeof(p) 509#define ferror_unlocked(p) __sferror(p) 510#define clearerr_unlocked(p) __sclearerr(p) 511#define fileno_unlocked(p) __sfileno(p) 512#endif 513#if __POSIX_VISIBLE >= 199506 514#define getc_unlocked(fp) __sgetc(fp) 515#define putc_unlocked(x, fp) __sputc(x, fp) 516 517#define getchar_unlocked() getc_unlocked(stdin) 518#define putchar_unlocked(x) putc_unlocked(x, stdout) 519#endif 520#endif /* __cplusplus */ 521 522__END_DECLS 523#endif /* !_STDIO_H_ */ 524