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| Rev | Author | Line No. | Line |
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| 359 | serge | 1 | /**************************************************************************** |
| 2 | * |
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| 3 | * Open Watcom Project |
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| 4 | * |
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| 5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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| 6 | * |
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| 7 | * ======================================================================== |
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| 8 | * |
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| 9 | * This file contains Original Code and/or Modifications of Original |
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| 10 | * Code as defined in and that are subject to the Sybase Open Watcom |
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| 11 | * Public License version 1.0 (the 'License'). You may not use this file |
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| 12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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| 13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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| 14 | * provided with the Original Code and Modifications, and is also |
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| 15 | * available at www.sybase.com/developer/opensource. |
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| 16 | * |
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| 17 | * The Original Code and all software distributed under the License are |
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| 18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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| 19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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| 20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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| 22 | * NON-INFRINGEMENT. Please see the License for the specific language |
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| 23 | * governing rights and limitations under the License. |
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| 24 | * |
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| 25 | * ======================================================================== |
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| 26 | * |
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| 27 | * Description: Implementation of fflush() helper routine. |
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| 28 | * |
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| 29 | ****************************************************************************/ |
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| 30 | |||
| 31 | |||
| 32 | #include "variety.h" |
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| 33 | #include |
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| 34 | #include |
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| 35 | #include |
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| 36 | #include |
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| 37 | #include "fileacc.h" |
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| 38 | #include "rtdata.h" |
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| 39 | #include "seterrno.h" |
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| 40 | #include "qwrite.h" |
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| 41 | #include "lseek.h" |
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| 42 | #include "flush.h" |
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| 43 | |||
| 44 | #if defined( __NETWARE__ ) && defined( _THIN_LIB ) |
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| 45 | |||
| 46 | /* Take flush from LibC */ |
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| 47 | _WCRTLINK int __flush( FILE *fp ) |
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| 48 | { |
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| 49 | return( fflush( fp ) ); |
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| 50 | } |
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| 51 | |||
| 52 | #else |
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| 53 | |||
| 54 | _WCRTLINK int __flush( FILE *fp ) |
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| 55 | { |
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| 56 | int len; |
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| 57 | long offset; |
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| 58 | int ret; |
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| 59 | char *ptr; |
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| 60 | unsigned amount; |
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| 61 | |||
| 62 | ret = 0; |
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| 63 | _AccessFile( fp ); |
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| 64 | if( fp->_flag & _DIRTY ) { |
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| 65 | fp->_flag &= ~_DIRTY; |
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| 66 | if( (fp->_flag & _WRITE) && (_FP_BASE(fp) != NULL) ) { |
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| 67 | ptr = _FP_BASE(fp); |
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| 68 | amount = fp->_cnt; |
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| 69 | while( amount != 0 && ret == 0 ) { |
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| 70 | len = __qwrite( fileno( fp ), ptr, amount ); /* 02-aug-90 */ |
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| 71 | if( len == -1 ) { |
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| 72 | fp->_flag |= _SFERR; |
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| 73 | ret = EOF; |
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| 74 | } |
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| 75 | #ifndef __UNIX__ |
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| 76 | else if( len == 0 ) { |
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| 77 | __set_errno( ENOSPC ); /* 12-nov-88 */ |
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| 78 | fp->_flag |= _SFERR; |
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| 79 | ret = EOF; |
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| 80 | } |
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| 81 | #endif |
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| 82 | ptr += len; |
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| 83 | amount -= len; |
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| 84 | } |
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| 85 | } |
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| 86 | } else if( _FP_BASE(fp) != NULL ) { /* not dirty */ |
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| 87 | /* fseek( fp, ftell(fp), SEEK_SET ); */ |
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| 88 | fp->_flag &= ~_EOF; |
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| 89 | if( !(fp->_flag & _ISTTY) ) { |
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| 90 | offset = fp->_cnt; |
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| 91 | if( offset != 0 ) { /* 10-aug-89 JD */ |
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| 92 | offset = __lseek( fileno( fp ), -offset, SEEK_CUR ); |
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| 93 | } |
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| 94 | if( offset == -1 ) { |
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| 95 | fp->_flag |= _SFERR; |
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| 96 | ret = EOF; |
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| 97 | } |
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| 98 | } |
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| 99 | } |
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| 100 | fp->_ptr = _FP_BASE(fp); /* reset ptr to start of buffer */ |
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| 101 | fp->_cnt = 0; |
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| 102 | #if !defined( __NETWARE__ ) && !defined( __OSI__ ) |
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| 103 | if( ret == 0 && (_FP_EXTFLAGS(fp) & _COMMIT) ) { |
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| 104 | if( fsync( fileno( fp ) ) == -1 ) { |
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| 105 | ret = EOF; |
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| 106 | } |
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| 107 | } |
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| 108 | #endif |
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| 109 | _ReleaseFile( fp ); |
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| 110 | return( ret ); |
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| 111 | } |
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| 112 | |||
| 113 | #endif |