Annotation of prex-old/usr/lib/libc/stdio/local.h, Revision 1.1.1.1
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: * @(#)local.h 8.3 (Berkeley) 7/3/94
33: */
34:
35: /*
36: * Information local to this implementation of stdio,
37: * in particular, macros and private variables.
38: */
39:
40: extern int __sflush(FILE *);
41: extern FILE *__sfp(void);
42: extern int __srefill(FILE *);
43: extern int __sread(FILE *, char *, int);
44: extern int __swrite(FILE *, char const *, int);
45: extern fpos_t __sseek(FILE *, fpos_t, int);
46: extern int __sclose(FILE *);
47: extern void __sinit(void);
48: extern void _cleanup(void);
49: extern void (*__cleanup)(void);
50: extern void __smakebuf(FILE *);
51: extern int _fwalk(int (*)(FILE *));
52: extern int __swsetup(FILE *);
53: extern int __sflags(const char *, int *);
54:
55: extern int __sdidinit;
56:
57: /*
58: * Return true iff the given FILE cannot be written now.
59: */
60: #define cantwrite(fp) \
61: ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
62: __swsetup(fp))
63:
64: /*
65: * Test whether the given stdio file has an active ungetc buffer;
66: * release such a buffer, without restoring ordinary unread data.
67: */
68: #define HASUB(fp) ((fp)->_ub._base != NULL)
69: #define FREEUB(fp) { \
70: (fp)->_ub._base = NULL; \
71: }
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