2004-04-14 20:09:21 +00:00
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/*
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* gzip header fields
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*/
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enum
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{
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GZMAGIC1 = 0x1f,
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GZMAGIC2 = 0x8b,
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GZDEFLATE = 8,
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GZFTEXT = 1 << 0, /* file is text */
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GZFHCRC = 1 << 1, /* crc of header included */
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GZFEXTRA = 1 << 2, /* extra header included */
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GZFNAME = 1 << 3, /* name of file included */
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GZFCOMMENT = 1 << 4, /* header comment included */
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GZFMASK = (1 << 5) -1, /* mask of specified bits */
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GZXFAST = 2, /* used fast algorithm, little compression */
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GZXBEST = 4, /* used maximum compression algorithm */
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GZOSFAT = 0, /* FAT file system */
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GZOSAMIGA = 1, /* Amiga */
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GZOSVMS = 2, /* VMS or OpenVMS */
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GZOSUNIX = 3, /* Unix */
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GZOSVMCMS = 4, /* VM/CMS */
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GZOSATARI = 5, /* Atari TOS */
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GZOSHPFS = 6, /* HPFS file system */
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GZOSMAC = 7, /* Macintosh */
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GZOSZSYS = 8, /* Z-System */
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GZOSCPM = 9, /* CP/M */
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GZOSTOPS20 = 10, /* TOPS-20 */
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GZOSNTFS = 11, /* NTFS file system */
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GZOSQDOS = 12, /* QDOS */
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GZOSACORN = 13, /* Acorn RISCOS */
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GZOSUNK = 255,
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2004-04-20 02:03:38 +00:00
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#define GZCRCPOLY 0xedb88320
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/* GZCRCPOLY = 0xedb88320UL, */
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2004-04-14 20:09:21 +00:00
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GZOSINFERNO = GZOSUNIX,
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};
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