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| 2 | pj | 1 | /*- |
| 2 | * Copyright (c) 1990, 1993 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * This code is derived from software contributed to Berkeley by |
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| 6 | * Chris Torek. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * 1. Redistributions of source code must retain the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer. |
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer in the |
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| 15 | * documentation and/or other materials provided with the distribution. |
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| 16 | * 3. All advertising materials mentioning features or use of this software |
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| 17 | * must display the following acknowledgement: |
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| 18 | * This product includes software developed by the University of |
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| 19 | * California, Berkeley and its contributors. |
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| 20 | * 4. Neither the name of the University nor the names of its contributors |
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| 21 | * may be used to endorse or promote products derived from this software |
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| 22 | * without specific prior written permission. |
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| 23 | * |
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| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 34 | * SUCH DAMAGE. |
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| 35 | * |
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| 36 | * @(#)local.h 8.2 (Berkeley) 1/2/94 |
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| 37 | */ |
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| 38 | |||
| 39 | /* |
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| 40 | * Information local to this implementation of stdio, |
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| 41 | * in particular, macros and private variables. |
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| 42 | */ |
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| 43 | |||
| 44 | int __sflush __P((FILE *)); |
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| 45 | FILE *__sfp __P((void)); |
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| 46 | int __srefill __P((FILE *)); |
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| 47 | int __sread __P((void *, char *, int)); |
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| 48 | int __swrite __P((void *, char const *, int)); |
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| 49 | fpos_t __sseek __P((void *, fpos_t, int)); |
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| 50 | int __sclose __P((void *)); |
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| 51 | void __sinit __P((void)); |
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| 52 | void _cleanup __P((void)); |
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| 53 | void (*__cleanup) __P((void)); |
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| 54 | void __smakebuf __P((FILE *)); |
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| 55 | int __swhatbuf __P((FILE *, size_t *, int *)); |
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| 56 | int _fwalk __P((int (*)(FILE *))); |
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| 57 | int __swsetup __P((FILE *)); |
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| 58 | int __sflags __P((const char *, int *)); |
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| 59 | |||
| 60 | extern int __sdidinit; |
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| 61 | |||
| 62 | /* |
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| 63 | * Return true iff the given FILE cannot be written now. |
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| 64 | */ |
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| 65 | #define cantwrite(fp) \ |
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| 66 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ |
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| 67 | __swsetup(fp)) |
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| 68 | |||
| 69 | /* |
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| 70 | * Test whether the given stdio file has an active ungetc buffer; |
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| 71 | * release such a buffer, without restoring ordinary unread data. |
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| 72 | */ |
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| 73 | #define HASUB(fp) ((fp)->_ub._base != NULL) |
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| 74 | #define FREEUB(fp) { \ |
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| 75 | if ((fp)->_ub._base != (fp)->_ubuf) \ |
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| 76 | free((char *)(fp)->_ub._base); \ |
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| 77 | (fp)->_ub._base = NULL; \ |
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| 78 | } |
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| 79 | |||
| 80 | /* |
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| 81 | * test for an fgetln() buffer. |
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| 82 | */ |
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| 83 | #define HASLB(fp) ((fp)->_lb._base != NULL) |
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| 84 | #define FREELB(fp) { \ |
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| 85 | free((char *)(fp)->_lb._base); \ |
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| 86 | (fp)->_lb._base = NULL; \ |
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| 87 | } |