Annotation of prex-old/usr/include/stdio.h, Revision 1.1.1.1.2.1
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:
1.1.1.1.2.1! nbrk 41: #if !defined(_SIZE_T)
! 42: #define _SIZE_T
! 43: typedef unsigned int size_t; /* size of something in bytes */
1.1 nbrk 44: #endif
45:
1.1.1.1.2.1! nbrk 46: #include <machine/stdarg.h>
! 47:
! 48: #ifndef NULL
! 49: #if !defined(__cplusplus)
! 50: #define NULL ((void *)0)
! 51: #else
! 52: #define NULL 0
! 53: #endif
! 54: #endif
1.1 nbrk 55:
56: typedef off_t fpos_t;
57:
58: #define _FSTDIO /* Define for new stdio with functions. */
59:
60: /*
61: * NB: to fit things in six character monocase externals, the stdio
62: * code uses the prefix `__s' for stdio objects, typically followed
63: * by a three-character attempt at a mnemonic.
64: */
65:
66: /* stdio buffers */
67: struct __sbuf {
68: unsigned char *_base;
69: int _size;
70: };
71:
72: /*
73: * stdio state variables.
74: *
75: * The following always hold:
76: *
77: * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
78: * _lbfsize is -_bf._size, else _lbfsize is 0
79: * if _flags&__SRD, _w is 0
80: * if _flags&__SWR, _r is 0
81: *
82: * This ensures that the getc and putc macros (or inline functions) never
83: * try to write or read from a file that is in `read' or `write' mode.
84: * (Moreover, they can, and do, automatically switch from read mode to
85: * write mode, and back, on "r+" and "w+" files.)
86: *
87: * _lbfsize is used only to make the inline line-buffered output stream
88: * code as compact as possible.
89: *
90: * _ub, _up, and _ur are used when ungetc() pushes back more characters
91: * than fit in the current _bf, or when ungetc() pushes back a character
92: * that does not match the previous one in _bf. When this happens,
93: * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
94: * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
95: *
96: * NB: see WARNING above before changing the layout of this structure!
97: */
98: typedef struct __sFILE {
99: struct __sFILE *next; /* file chain */
100: unsigned char *_p; /* current position in (some) buffer */
101: int _r; /* read space left for getc() */
102: int _w; /* write space left for putc() */
103: short _flags; /* flags, below; this FILE is free if 0 */
104: short _file; /* fileno, if Unix descriptor, else -1 */
105: struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
106:
107: /* separate buffer for long sequences of ungetc() */
108: struct __sbuf _ub; /* ungetc buffer */
109: unsigned char *_up; /* saved _p when _p is doing ungetc data */
110: int _ur; /* saved _r when _r is counting ungetc data */
111:
112: /* tricks to meet minimum requirements even when malloc() fails */
113: unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
114: unsigned char _nbuf[1]; /* guarantee a getc() buffer */
115: } FILE;
116:
117: __BEGIN_DECLS
118: extern FILE __sF[];
119: __END_DECLS
120:
121: #define __SLBF 0x0001 /* line buffered */
122: #define __SNBF 0x0002 /* unbuffered */
123: #define __SRD 0x0004 /* OK to read */
124: #define __SWR 0x0008 /* OK to write */
125: /* RD and WR are never simultaneously asserted */
126: #define __SRW 0x0010 /* open for reading & writing */
127: #define __SEOF 0x0020 /* found EOF */
128: #define __SERR 0x0040 /* found error */
129: #define __SMBF 0x0080 /* _buf is from malloc */
130: #define __SAPP 0x0100 /* fdopen()ed in append mode */
131: #define __SSTR 0x0200 /* this is an sprintf/snprintf string */
132:
133: /*
134: * The following three definitions are for ANSI C, which took them
135: * from System V, which brilliantly took internal interface macros and
136: * made them official arguments to setvbuf(), without renaming them.
137: * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
138: *
139: * Although numbered as their counterparts above, the implementation
140: * does not rely on this.
141: */
142: #define _IOFBF 0 /* setvbuf should set fully buffered */
143: #define _IOLBF 1 /* setvbuf should set line buffered */
144: #define _IONBF 2 /* setvbuf should set unbuffered */
145:
146: #define BUFSIZ 512 /* size of buffer used by setbuf */
147: #define EOF (-1)
148:
149: /*
150: * FOPEN_MAX is a minimum maximum, and is the number of streams that
151: * stdio can provide without attempting to allocate further resources
152: * (which could fail). Do not use this for anything.
153: */
154: /* must be == _POSIX_STREAM_MAX <limits.h> */
155: #define FOPEN_MAX 16 /* must be <= OPEN_MAX <sys/syslimits.h> */
156: #define FILENAME_MAX 256 /* must be <= PATH_MAX <sys/syslimits.h> */
157:
158: /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
159: #ifndef _ANSI_SOURCE
160: #define P_tmpdir "/var/tmp/"
161: #endif
162: #define L_tmpnam 255 /* XXX must be == PATH_MAX */
163: #define TMP_MAX 308915776
164:
165: /* access function */
166: #define F_OK 0 /* test for existence of file */
167: #define X_OK 0x01 /* test for execute or search permission */
168: #define W_OK 0x02 /* test for write permission */
169: #define R_OK 0x04 /* test for read permission */
170:
171: /* whence values for lseek(2) */
172: #define SEEK_SET 0 /* set file offset to offset */
173: #define SEEK_CUR 1 /* set file offset to current plus offset */
174: #define SEEK_END 2 /* set file offset to EOF plus offset */
175:
176: #define stdin (&__sF[0])
177: #define stdout (&__sF[1])
178: #define stderr (&__sF[2])
179:
180: /*
181: * Functions defined in ANSI C standard.
182: */
183: __BEGIN_DECLS
184: void clearerr(FILE *);
185: int fclose(FILE *);
186: int feof(FILE *);
187: int ferror(FILE *);
188: int fflush(FILE *);
189: int fgetc(FILE *);
190: int fgetpos(FILE *, fpos_t *);
191: char *fgets(char *, size_t, FILE *);
192: FILE *fopen(const char *, const char *);
193: int fprintf(FILE *, const char *, ...);
194: int fputc(int, FILE *);
195: int fputs(const char *, FILE *);
196: size_t fread(void *, size_t, size_t, FILE *);
197: FILE *freopen(const char *, const char *, FILE *);
198: int fscanf(FILE *, const char *, ...);
199: int fseek(FILE *, long, int);
200: int fsetpos(FILE *, const fpos_t *);
201: long ftell(FILE *);
202: size_t fwrite(const void *, size_t, size_t, FILE *);
203: int getc(FILE *);
204: int getchar(void);
205: char *gets(char *);
206: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
207: extern const int _sys_nerr; /* perror(3) external variables */
208: extern const char *const _sys_errlist[];
209: #endif
210: void perror(const char *);
211: int printf(const char *, ...);
212: int putc(int, FILE *);
213: int putchar(int);
214: int puts(const char *);
215: int remove(const char *);
216: int rename (const char *, const char *);
217: void rewind(FILE *);
218: int scanf(const char *, ...);
219: void setbuf(FILE *, char *);
220: int setvbuf(FILE *, char *, int, size_t);
221: int sprintf(char *, const char *, ...);
222: int sscanf(const char *, const char *, ...);
223: FILE *tmpfile(void);
224: char *tmpnam(char *);
225: int ungetc(int, FILE *);
1.1.1.1.2.1! nbrk 226: int vfprintf(FILE *, const char *, va_list);
! 227: int vprintf(const char *, va_list);
! 228: int vsprintf(char *, const char *, va_list);
1.1 nbrk 229: __END_DECLS
230:
231: /*
232: * Functions defined in POSIX 1003.1.
233: */
234: #ifndef _ANSI_SOURCE
235: #define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */
236: #define L_ctermid 1024 /* size for ctermid(); PATH_MAX */
237:
238: __BEGIN_DECLS
239: char *ctermid(char *);
240: FILE *fdopen(int, const char *);
241: int fileno(FILE *);
242: __END_DECLS
243: #endif /* not ANSI */
244:
245: /*
246: * Routines that are purely local.
247: */
248: #if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
249: __BEGIN_DECLS
250: int fpurge(FILE *);
251: int getw(FILE *);
252: int pclose(FILE *);
253: FILE *popen(const char *, const char *);
254: int putw(int, FILE *);
255: void setbuffer(FILE *, char *, int);
256: int setlinebuf(FILE *);
257: char *tempnam(const char *, const char *);
258: int snprintf(char *, size_t, const char *, ...);
1.1.1.1.2.1! nbrk 259: int vsnprintf(char *, size_t, const char *, va_list);
! 260: int vscanf(const char *, va_list);
! 261: int vsscanf(const char *, const char *, va_list);
1.1 nbrk 262: FILE *zopen(const char *, const char *, int);
263: __END_DECLS
264:
265: /*
266: * This is a #define because the function is used internally and
267: * (unlike vfscanf) the name __svfscanf is guaranteed not to collide
268: * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
269: */
270: #define vfscanf __svfscanf
271:
272: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
273:
274: /*
275: * Functions internal to the implementation.
276: */
277: __BEGIN_DECLS
278: int __srget(FILE *);
1.1.1.1.2.1! nbrk 279: int __svfscanf(FILE *, const char *, va_list);
1.1 nbrk 280: int __swbuf(int, FILE *);
281: __END_DECLS
282:
283: /*
284: * The __sfoo macros are here so that we can
285: * define function versions in the C library.
286: */
287:
288: #define __sfeof(p) (((p)->_flags & __SEOF) != 0)
289: #define __sferror(p) (((p)->_flags & __SERR) != 0)
290: #define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
291: #define __sfileno(p) ((p)->_file)
292:
293: #define feof(p) __sfeof(p)
294: #define ferror(p) __sferror(p)
295: #define clearerr(p) __sclearerr(p)
296:
297: #ifndef _ANSI_SOURCE
298: #define fileno(p) __sfileno(p)
299: #endif
300:
301: #endif /* _STDIO_H_ */
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