Annotation of prex-old/usr/include/stdio.h, Revision 1.1
1.1 ! nbrk 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: */
! 34:
! 35: #ifndef _STDIO_H_
! 36: #define _STDIO_H_
! 37:
! 38: #include <sys/types.h>
! 39: #include <sys/cdefs.h>
! 40:
! 41: #include <machine/ansi.h>
! 42: #ifdef _BSD_SIZE_T_
! 43: typedef _BSD_SIZE_T_ size_t;
! 44: #undef _BSD_SIZE_T_
! 45: #endif
! 46:
! 47: #include <sys/null.h>
! 48:
! 49: typedef off_t fpos_t;
! 50:
! 51: #define _FSTDIO /* Define for new stdio with functions. */
! 52:
! 53: /*
! 54: * NB: to fit things in six character monocase externals, the stdio
! 55: * code uses the prefix `__s' for stdio objects, typically followed
! 56: * by a three-character attempt at a mnemonic.
! 57: */
! 58:
! 59: /* stdio buffers */
! 60: struct __sbuf {
! 61: unsigned char *_base;
! 62: int _size;
! 63: };
! 64:
! 65: /*
! 66: * stdio state variables.
! 67: *
! 68: * The following always hold:
! 69: *
! 70: * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
! 71: * _lbfsize is -_bf._size, else _lbfsize is 0
! 72: * if _flags&__SRD, _w is 0
! 73: * if _flags&__SWR, _r is 0
! 74: *
! 75: * This ensures that the getc and putc macros (or inline functions) never
! 76: * try to write or read from a file that is in `read' or `write' mode.
! 77: * (Moreover, they can, and do, automatically switch from read mode to
! 78: * write mode, and back, on "r+" and "w+" files.)
! 79: *
! 80: * _lbfsize is used only to make the inline line-buffered output stream
! 81: * code as compact as possible.
! 82: *
! 83: * _ub, _up, and _ur are used when ungetc() pushes back more characters
! 84: * than fit in the current _bf, or when ungetc() pushes back a character
! 85: * that does not match the previous one in _bf. When this happens,
! 86: * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
! 87: * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
! 88: *
! 89: * NB: see WARNING above before changing the layout of this structure!
! 90: */
! 91: typedef struct __sFILE {
! 92: struct __sFILE *next; /* file chain */
! 93: unsigned char *_p; /* current position in (some) buffer */
! 94: int _r; /* read space left for getc() */
! 95: int _w; /* write space left for putc() */
! 96: short _flags; /* flags, below; this FILE is free if 0 */
! 97: short _file; /* fileno, if Unix descriptor, else -1 */
! 98: struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
! 99:
! 100: /* separate buffer for long sequences of ungetc() */
! 101: struct __sbuf _ub; /* ungetc buffer */
! 102: unsigned char *_up; /* saved _p when _p is doing ungetc data */
! 103: int _ur; /* saved _r when _r is counting ungetc data */
! 104:
! 105: /* tricks to meet minimum requirements even when malloc() fails */
! 106: unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
! 107: unsigned char _nbuf[1]; /* guarantee a getc() buffer */
! 108: } FILE;
! 109:
! 110: __BEGIN_DECLS
! 111: extern FILE __sF[];
! 112: __END_DECLS
! 113:
! 114: #define __SLBF 0x0001 /* line buffered */
! 115: #define __SNBF 0x0002 /* unbuffered */
! 116: #define __SRD 0x0004 /* OK to read */
! 117: #define __SWR 0x0008 /* OK to write */
! 118: /* RD and WR are never simultaneously asserted */
! 119: #define __SRW 0x0010 /* open for reading & writing */
! 120: #define __SEOF 0x0020 /* found EOF */
! 121: #define __SERR 0x0040 /* found error */
! 122: #define __SMBF 0x0080 /* _buf is from malloc */
! 123: #define __SAPP 0x0100 /* fdopen()ed in append mode */
! 124: #define __SSTR 0x0200 /* this is an sprintf/snprintf string */
! 125:
! 126: /*
! 127: * The following three definitions are for ANSI C, which took them
! 128: * from System V, which brilliantly took internal interface macros and
! 129: * made them official arguments to setvbuf(), without renaming them.
! 130: * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
! 131: *
! 132: * Although numbered as their counterparts above, the implementation
! 133: * does not rely on this.
! 134: */
! 135: #define _IOFBF 0 /* setvbuf should set fully buffered */
! 136: #define _IOLBF 1 /* setvbuf should set line buffered */
! 137: #define _IONBF 2 /* setvbuf should set unbuffered */
! 138:
! 139: #define BUFSIZ 512 /* size of buffer used by setbuf */
! 140: #define EOF (-1)
! 141:
! 142: /*
! 143: * FOPEN_MAX is a minimum maximum, and is the number of streams that
! 144: * stdio can provide without attempting to allocate further resources
! 145: * (which could fail). Do not use this for anything.
! 146: */
! 147: /* must be == _POSIX_STREAM_MAX <limits.h> */
! 148: #define FOPEN_MAX 16 /* must be <= OPEN_MAX <sys/syslimits.h> */
! 149: #define FILENAME_MAX 256 /* must be <= PATH_MAX <sys/syslimits.h> */
! 150:
! 151: /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
! 152: #ifndef _ANSI_SOURCE
! 153: #define P_tmpdir "/var/tmp/"
! 154: #endif
! 155: #define L_tmpnam 255 /* XXX must be == PATH_MAX */
! 156: #define TMP_MAX 308915776
! 157:
! 158: /* access function */
! 159: #define F_OK 0 /* test for existence of file */
! 160: #define X_OK 0x01 /* test for execute or search permission */
! 161: #define W_OK 0x02 /* test for write permission */
! 162: #define R_OK 0x04 /* test for read permission */
! 163:
! 164: /* whence values for lseek(2) */
! 165: #define SEEK_SET 0 /* set file offset to offset */
! 166: #define SEEK_CUR 1 /* set file offset to current plus offset */
! 167: #define SEEK_END 2 /* set file offset to EOF plus offset */
! 168:
! 169: #define stdin (&__sF[0])
! 170: #define stdout (&__sF[1])
! 171: #define stderr (&__sF[2])
! 172:
! 173: /*
! 174: * Functions defined in ANSI C standard.
! 175: */
! 176: __BEGIN_DECLS
! 177: void clearerr(FILE *);
! 178: int fclose(FILE *);
! 179: int feof(FILE *);
! 180: int ferror(FILE *);
! 181: int fflush(FILE *);
! 182: int fgetc(FILE *);
! 183: int fgetpos(FILE *, fpos_t *);
! 184: char *fgets(char *, size_t, FILE *);
! 185: FILE *fopen(const char *, const char *);
! 186: int fprintf(FILE *, const char *, ...);
! 187: int fputc(int, FILE *);
! 188: int fputs(const char *, FILE *);
! 189: size_t fread(void *, size_t, size_t, FILE *);
! 190: FILE *freopen(const char *, const char *, FILE *);
! 191: int fscanf(FILE *, const char *, ...);
! 192: int fseek(FILE *, long, int);
! 193: int fsetpos(FILE *, const fpos_t *);
! 194: long ftell(FILE *);
! 195: size_t fwrite(const void *, size_t, size_t, FILE *);
! 196: int getc(FILE *);
! 197: int getchar(void);
! 198: char *gets(char *);
! 199: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
! 200: extern const int _sys_nerr; /* perror(3) external variables */
! 201: extern const char *const _sys_errlist[];
! 202: #endif
! 203: void perror(const char *);
! 204: int printf(const char *, ...);
! 205: int putc(int, FILE *);
! 206: int putchar(int);
! 207: int puts(const char *);
! 208: int remove(const char *);
! 209: int rename (const char *, const char *);
! 210: void rewind(FILE *);
! 211: int scanf(const char *, ...);
! 212: void setbuf(FILE *, char *);
! 213: int setvbuf(FILE *, char *, int, size_t);
! 214: int sprintf(char *, const char *, ...);
! 215: int sscanf(const char *, const char *, ...);
! 216: FILE *tmpfile(void);
! 217: char *tmpnam(char *);
! 218: int ungetc(int, FILE *);
! 219: int vfprintf(FILE *, const char *, _BSD_VA_LIST_);
! 220: int vprintf(const char *, _BSD_VA_LIST_);
! 221: int vsprintf(char *, const char *, _BSD_VA_LIST_);
! 222: __END_DECLS
! 223:
! 224: /*
! 225: * Functions defined in POSIX 1003.1.
! 226: */
! 227: #ifndef _ANSI_SOURCE
! 228: #define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */
! 229: #define L_ctermid 1024 /* size for ctermid(); PATH_MAX */
! 230:
! 231: __BEGIN_DECLS
! 232: char *ctermid(char *);
! 233: FILE *fdopen(int, const char *);
! 234: int fileno(FILE *);
! 235: __END_DECLS
! 236: #endif /* not ANSI */
! 237:
! 238: /*
! 239: * Routines that are purely local.
! 240: */
! 241: #if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
! 242: __BEGIN_DECLS
! 243: int fpurge(FILE *);
! 244: int getw(FILE *);
! 245: int pclose(FILE *);
! 246: FILE *popen(const char *, const char *);
! 247: int putw(int, FILE *);
! 248: void setbuffer(FILE *, char *, int);
! 249: int setlinebuf(FILE *);
! 250: char *tempnam(const char *, const char *);
! 251: int snprintf(char *, size_t, const char *, ...);
! 252: int vsnprintf(char *, size_t, const char *, _BSD_VA_LIST_);
! 253: int vscanf(const char *, _BSD_VA_LIST_);
! 254: int vsscanf(const char *, const char *, _BSD_VA_LIST_);
! 255: FILE *zopen(const char *, const char *, int);
! 256: __END_DECLS
! 257:
! 258: /*
! 259: * This is a #define because the function is used internally and
! 260: * (unlike vfscanf) the name __svfscanf is guaranteed not to collide
! 261: * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
! 262: */
! 263: #define vfscanf __svfscanf
! 264:
! 265: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
! 266:
! 267: /*
! 268: * Functions internal to the implementation.
! 269: */
! 270: __BEGIN_DECLS
! 271: int __srget(FILE *);
! 272: int __svfscanf(FILE *, const char *, _BSD_VA_LIST_);
! 273: int __swbuf(int, FILE *);
! 274: __END_DECLS
! 275:
! 276: /*
! 277: * The __sfoo macros are here so that we can
! 278: * define function versions in the C library.
! 279: */
! 280:
! 281: #define __sfeof(p) (((p)->_flags & __SEOF) != 0)
! 282: #define __sferror(p) (((p)->_flags & __SERR) != 0)
! 283: #define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
! 284: #define __sfileno(p) ((p)->_file)
! 285:
! 286: #define feof(p) __sfeof(p)
! 287: #define ferror(p) __sferror(p)
! 288: #define clearerr(p) __sclearerr(p)
! 289:
! 290: #ifndef _ANSI_SOURCE
! 291: #define fileno(p) __sfileno(p)
! 292: #endif
! 293:
! 294: #endif /* _STDIO_H_ */
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