gzip.h (1092B)
1 /* 2 * gzip header fields 3 */ 4 enum 5 { 6 GZMAGIC1 = 0x1f, 7 GZMAGIC2 = 0x8b, 8 9 GZDEFLATE = 8, 10 11 GZFTEXT = 1 << 0, /* file is text */ 12 GZFHCRC = 1 << 1, /* crc of header included */ 13 GZFEXTRA = 1 << 2, /* extra header included */ 14 GZFNAME = 1 << 3, /* name of file included */ 15 GZFCOMMENT = 1 << 4, /* header comment included */ 16 GZFMASK = (1 << 5) -1, /* mask of specified bits */ 17 18 GZXFAST = 2, /* used fast algorithm, little compression */ 19 GZXBEST = 4, /* used maximum compression algorithm */ 20 21 GZOSFAT = 0, /* FAT file system */ 22 GZOSAMIGA = 1, /* Amiga */ 23 GZOSVMS = 2, /* VMS or OpenVMS */ 24 GZOSUNIX = 3, /* Unix */ 25 GZOSVMCMS = 4, /* VM/CMS */ 26 GZOSATARI = 5, /* Atari TOS */ 27 GZOSHPFS = 6, /* HPFS file system */ 28 GZOSMAC = 7, /* Macintosh */ 29 GZOSZSYS = 8, /* Z-System */ 30 GZOSCPM = 9, /* CP/M */ 31 GZOSTOPS20 = 10, /* TOPS-20 */ 32 GZOSNTFS = 11, /* NTFS file system */ 33 GZOSQDOS = 12, /* QDOS */ 34 GZOSACORN = 13, /* Acorn RISCOS */ 35 GZOSUNK = 255, 36 37 #define GZCRCPOLY 0xedb88320 38 /* GZCRCPOLY = 0xedb88320UL, */ 39 40 GZOSINFERNO = GZOSUNIX 41 };