root / prex-0.9.0 / usr / lib / libc / stdio / local.h @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*-
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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. Neither the name of the University nor the names of its contributors
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17 | * may be used to endorse or promote products derived from this software
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18 | * without specific prior written permission.
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19 | *
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20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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30 | * SUCH DAMAGE.
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31 | *
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32 | * @(#)local.h 8.3 (Berkeley) 7/3/94
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33 | */
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34 | |||
35 | #include <sys/cdefs.h> |
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36 | |||
37 | /*
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38 | * Information local to this implementation of stdio,
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39 | * in particular, macros and private variables.
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40 | */
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41 | |||
42 | __BEGIN_DECLS |
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43 | int __sflush(FILE *);
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44 | FILE *__sfp(void);
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45 | int __srefill(FILE *);
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46 | int __sread(FILE *, char *, int); |
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47 | int __swrite(FILE *, char const *, int); |
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48 | fpos_t __sseek(FILE *, fpos_t, int);
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49 | int __sclose(FILE *);
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50 | void __sinit(void); |
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51 | void _cleanup(void); |
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52 | void (*__cleanup)(void); |
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53 | void __smakebuf(FILE *);
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54 | int _fwalk(int (*)(FILE *)); |
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55 | int __swsetup(FILE *);
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56 | int __sflags(const char *, int *); |
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57 | int __sdidinit;
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58 | __END_DECLS |
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59 | |||
60 | /*
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61 | * Return true iff the given FILE cannot be written now.
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62 | */
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63 | #define cantwrite(fp) \
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64 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ |
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65 | __swsetup(fp)) |
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66 | |||
67 | /*
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68 | * Test whether the given stdio file has an active ungetc buffer;
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69 | * release such a buffer, without restoring ordinary unread data.
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70 | */
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71 | #define HASUB(fp) ((fp)->_ub._base != NULL) |
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72 | #define FREEUB(fp) { \
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73 | (fp)->_ub._base = NULL; \
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74 | } |