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c9be6cfe | 1 | /*- |
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2 | * Copyright (c) 1990 The Regents of the University of California. |
3 | * All rights reserved. | |
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4 | * |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Chris Torek. | |
7 | * | |
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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. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
20 | * 4. Neither the name of the University nor the names of its contributors | |
21 | * may be used to endorse or promote products derived from this software | |
22 | * without specific prior written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
34 | * SUCH DAMAGE. | |
ad787160 | 35 | * |
ed554bc5 | 36 | * @(#)local.h 5.3 (Berkeley) 5/6/93 |
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37 | */ |
38 | ||
39 | /* | |
40 | * Information local to this implementation of stdio, | |
41 | * in particular, macros and private variables. | |
42 | */ | |
43 | ||
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44 | int __sflush __P((FILE *)); |
45 | FILE *__sfp __P((void)); | |
46 | int __srefill __P((FILE *)); | |
47 | int __sread __P((void *, char *, int)); | |
48 | int __swrite __P((void *, char const *, int)); | |
49 | fpos_t __sseek __P((void *, fpos_t, int)); | |
50 | int __sclose __P((void *)); | |
51 | void __sinit __P((void)); | |
52 | void _cleanup __P((void)); | |
53 | void (*__cleanup) __P((void)); | |
54 | void __smakebuf __P((FILE *)); | |
304ee16c | 55 | int __swhatbuf __P((FILE *, size_t *, int *)); |
466f0a37 CT |
56 | int _fwalk __P((int (*)(FILE *))); |
57 | int __swsetup __P((FILE *)); | |
58 | int __sflags __P((const char *, int *)); | |
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59 | |
60 | extern int __sdidinit; | |
61 | ||
62 | /* | |
63 | * Return true iff the given FILE cannot be written now. | |
64 | */ | |
65 | #define cantwrite(fp) \ | |
66 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ | |
67 | __swsetup(fp)) | |
68 | ||
69 | /* | |
70 | * Test whether the given stdio file has an active ungetc buffer; | |
71 | * release such a buffer, without restoring ordinary unread data. | |
72 | */ | |
73 | #define HASUB(fp) ((fp)->_ub._base != NULL) | |
74 | #define FREEUB(fp) { \ | |
75 | if ((fp)->_ub._base != (fp)->_ubuf) \ | |
76 | free((char *)(fp)->_ub._base); \ | |
77 | (fp)->_ub._base = NULL; \ | |
78 | } | |
79 | ||
80 | /* | |
81 | * test for an fgetline() buffer. | |
82 | */ | |
83 | #define HASLB(fp) ((fp)->_lb._base != NULL) | |
84 | #define FREELB(fp) { \ | |
85 | free((char *)(fp)->_lb._base); \ | |
86 | (fp)->_lb._base = NULL; \ | |
87 | } |