f0d81ffd1c
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://10.65.10.50/trunk@5403 c028cbd2-c16b-5b4b-a496-9718f37d4682
40 lines
1.6 KiB
C
Executable File
40 lines
1.6 KiB
C
Executable File
/* beos.h -- A few handy things for the BeOS port. */
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/* (c) 1997 Chris Herborth (chrish@qnx.com) */
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/* This is covered under the usual Info-ZIP copyright. */
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#define EF_BE_ID 0x6542 /* 'Be' in little-endian form */
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#define EF_BE_SIZE 5 /* at least unsigned long + flag */
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#define EF_BE_FL_NATURAL 0x01 /* data is 'natural' (not compressed) */
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#define EF_BE_FL_BADBITS 0xfe /* bits currently undefined */
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/*
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DR9 'Be' extra-field layout:
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'Be' - 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_NATURAL = 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_NATURAL, the data is not compressed; this optimisation is
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necessary to prevent wasted space for files with small attributes (which
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appears to be quite common on the Advanced Access DR9 release). In this
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case, there should be ( ef_size - EB_L_BE_LEN ) bytes of data, and full_size
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should equal ( ef_size - EB_L_BE_LEN ).
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If the data is compressed, there will be ( ef_size - EB_L_BE_LEN ) 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 'Be' 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
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attr_data (length in attr_info.size)
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*/
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