forked from KolibriOS/kolibrios
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
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/*
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Copyright (c) 1990-2004 Info-ZIP. All rights reserved.
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See the accompanying file LICENSE, version 2000-Apr-09 or later
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(the contents of which are also included in unzip.h) for terms of use.
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If, for some reason, all these files are missing, the Info-ZIP license
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also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
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*/
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/* atheos.h -- A few handy things for the AtheOS port
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*
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* (c) 1997 Chris Herborth (chrish@qnx.com) - BeOS port
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* (c) 2004 Ruslan Nickolaev (nruslan@hotbox.ru) - AtheOS port
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*
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* This is covered under the usual Info-ZIP copyright
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*/
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#ifndef _ATHEOS_H_
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#define _ATHEOS_H_
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#define EB_BE_FL_BADBITS 0xfe /* bits currently undefined */
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/*
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AtheOS 'At' extra-field layout:
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(same structure as the BeOS 'Be' e.f. layout, only signature and internal
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conventions of the file attribute data are different...)
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'At' - signature
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ef_size - size of data in this EF (little-endian unsigned short)
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full_size - uncompressed data size (little-endian unsigned long)
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flag - flags (byte)
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flags & EB_BE_FL_UNCMPR = the data is not compressed
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flags & EB_BE_FL_BADBITS = the data is corrupted or we
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can't handle it properly
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data - compressed or uncompressed file attribute data
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If flag & EB_BE_FL_UNCMPR, the data is not compressed; this optimisation is
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necessary to prevent wasted space for files with small attributes. In this
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case, there should be (ef_size - EB_BEOS_HLEN) bytes of data, and full_size
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should equal (ef_size - EB_BEOS_HLEN).
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If the data is compressed, there will be (ef_size - EB_BEOS_HLEN) bytes of
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compressed data, and full_size bytes of uncompressed data.
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If a file has absolutely no attributes, there will not be a 'At' extra field.
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The uncompressed data is arranged like this:
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attr_name\0 - C string
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struct attr_info (fields in little-endian format)
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attr_data (length in attr_info.ai_size)
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*/
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#endif /* _ATHEOS_H_ */
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