Rev 613 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 613 | 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 | * Description: low level lseek without file extend for Windows NT |
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| 27 | * |
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| 28 | ****************************************************************************/ |
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| 29 | |||
| 30 | |||
| 31 | #include "variety.h" |
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| 32 | #include |
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| 33 | #include |
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| 34 | #include "iomode.h" |
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| 35 | #include "rtcheck.h" |
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| 36 | #include "seterrno.h" |
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| 37 | #include "lseek.h" |
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| 38 | #include "handleio.h" |
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| 711 | serge | 39 | #include "kolibri.h" |
| 613 | serge | 40 | |
| 41 | #ifndef INVALID_SET_FILE_POINTER |
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| 42 | #define INVALID_SET_FILE_POINTER 0xFFFFFFFF |
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| 43 | #endif |
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| 44 | |||
| 45 | typedef struct |
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| 46 | { |
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| 47 | char *name; |
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| 48 | unsigned int offset; |
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| 49 | }__file_handle; |
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| 50 | |||
| 51 | _WCRTLINK long __lseek( int hid, long offset, int origin ) |
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| 52 | { |
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| 53 | __file_handle *fh; |
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| 54 | long rc; |
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| 55 | |||
| 56 | __handle_check( hid, -1 ); |
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| 57 | fh = (__file_handle*) __getOSHandle( hid ); |
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| 58 | |||
| 59 | switch(origin) |
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| 60 | { |
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| 61 | case SEEK_SET: |
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| 62 | rc = offset; |
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| 63 | break; |
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| 64 | case SEEK_CUR: |
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| 65 | rc = fh->offset + offset; |
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| 66 | break; |
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| 67 | case SEEK_END: |
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| 68 | { |
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| 69 | FILEINFO info; |
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| 70 | get_fileinfo(fh->name,&info); |
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| 71 | rc = offset + info.size; |
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| 72 | break; |
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| 73 | } |
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| 74 | default: |
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| 75 | return -1; |
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| 76 | }; |
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| 77 | |||
| 78 | fh->offset = rc; |
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| 79 | |||
| 80 | return( rc ); |
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| 81 | } |
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| 82 |