| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | /* $OpenBSD: local.h,v 1.12 2005/10/10 17:37:44 espie Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1990, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Chris Torek. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #include "wcio.h" |
| 36 | #include "fileext.h" |
| 37 | |
| 38 | #ifndef DEFFILEMODE |
| 39 | #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) |
| 40 | #endif |
| 41 | |
| 42 | |
| 43 | /* |
| 44 | * Information local to this implementation of stdio, |
| 45 | * in particular, macros and private variables. |
| 46 | */ |
| 47 | |
| 48 | int __sflush(FILE *); |
| 49 | FILE *__sfp(void); |
| 50 | int __srefill(FILE *); |
| 51 | int __sread(void *, char *, int); |
| 52 | int __swrite(void *, const char *, int); |
| 53 | fpos_t __sseek(void *, fpos_t, int); |
| 54 | int __sclose(void *); |
| 55 | void __sinit(void); |
| 56 | void _cleanup(void); |
| 57 | void __smakebuf(FILE *); |
| 58 | int __swhatbuf(FILE *, size_t *, int *); |
| 59 | int _fwalk(int (*)(FILE *)); |
| 60 | int __swsetup(FILE *); |
| 61 | int __sflags(const char *, int *); |
| 62 | |
| 63 | extern void __atexit_register_cleanup(void (*)(void)); |
| 64 | extern int __sdidinit; |
| 65 | |
| 66 | /* |
| 67 | * Return true if the given FILE cannot be written now. |
| 68 | */ |
| 69 | #define cantwrite(fp) \ |
| 70 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ |
| 71 | __swsetup(fp)) |
| 72 | |
| 73 | /* |
| 74 | * Test whether the given stdio file has an active ungetc buffer; |
| 75 | * release such a buffer, without restoring ordinary unread data. |
| 76 | */ |
| 77 | #define HASUB(fp) (_UB(fp)._base != NULL) |
| 78 | #define FREEUB(fp) { \ |
| 79 | if (_UB(fp)._base != (fp)->_ubuf) \ |
| 80 | free(_UB(fp)._base); \ |
| 81 | _UB(fp)._base = NULL; \ |
| 82 | } |
| 83 | |
| 84 | /* |
| 85 | * test for an fgetln() buffer. |
| 86 | */ |
| 87 | #define HASLB(fp) ((fp)->_lb._base != NULL) |
| 88 | #define FREELB(fp) { \ |
| 89 | free((char *)(fp)->_lb._base); \ |
| 90 | (fp)->_lb._base = NULL; \ |
| 91 | } |