http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/ftape-header-segment.h

#ifndef _FTAPE_HEADER_SEGMENT_H #define _FTAPE_HEADER_SEGMENT_H /* * Copyright (C) 1996-1997 Claus-Justus Heine. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * $Source: /homes/cvs/ftape-stacked/include/linux/ftape-header-segment.h,v $ * $Revision: 1.2 $ * $Date: 1997/10/05 19:19:28 $ * * This file defines some offsets into the header segment of a * floppy tape cartridge. For use with the QIC-40/80/3010/3020 * floppy-tape driver "ftape" for Linux. */ #define FT_SIGNATURE 0 /* must be 0xaa55aa55 */ #define FT_FMT_CODE 4 #define FT_REV_LEVEL 5 /* only for QIC-80 since. Rev. L (== 0x0c) */ #define FT_HSEG_1 6 /* first header segment, except for format code 6 */ #define FT_HSEG_2 8 /* second header segment, except for format code 6 */ #define FT_FRST_SEG 10 /* first data segment, except for format code 6 */ #define FT_LAST_SEG 12 /* last data segment, except for format code 6 */ #define FT_FMT_DATE 14 /* date and time of most recent format, see below */ #define FT_WR_DATE 18 /* date and time of most recent write or format */ #define FT_SPT 24 /* segments per track */ #define FT_TPC 26 /* tracks per cartridge */ #define FT_FHM 27 /* floppy drive head (maximum of it) */ #define FT_FTM 28 /* floppy track max. */ #define FT_FSM 29 /* floppy sector max. (128) */ #define FT_LABEL 30 /* floppy tape label */ #define FT_LABEL_DATE 74 /* date and time the tape label was written */ #define FT_LABEL_SZ (FT_LABEL_DATE - FT_LABEL) #define FT_CMAP_START 78 /* starting segment of compression map */ #define FT_FMT_ERROR 128 /* must be set to 0xff if remainder gets lost during * tape format */ #define FT_SEG_CNT 130 /* number of seg. written, formatted or verified * through lifetime of tape (why not read?) */ #define FT_INIT_DATE 138 /* date and time of initial tape format */ #define FT_FMT_CNT 142 /* number of times tape has been formatted */ #define FT_FSL_CNT 144 /* number of segments in failed sector log */ #define FT_MK_CODE 146 /* id string of tape manufacturer */ #define FT_LOT_CODE 190 /* tape manufacturer lot code */ #define FT_6_HSEG_1 234 /* first header segment for format code 6 */ #define FT_6_HSEG_2 238 /* second header segment for format code 6 */ #define FT_6_FRST_SEG 242 /* first data segment for format code 6 */ #define FT_6_LAST_SEG 246 /* last data segment for format code 6 */ #define FT_FSL 256 #define FT_HEADER_END 256 /* space beyond this point: * format codes 2, 3 and 5: * - failed sector log until byte 2047 * - bad sector map in the reamining part of segment * format codes 4 and 6: * - bad sector map starts hear */ /* value to be stored at the FT_SIGNATURE offset */ #define FT_HSEG_MAGIC 0xaa55aa55 #define FT_D2G_MAGIC 0x82288228 /* Ditto 2GB */ /* data and time encoding: */ #define FT_YEAR_SHIFT 25 #define FT_YEAR_MASK 0xfe000000 #define FT_YEAR_0 1970 #define FT_YEAR_MAX 127 #define FT_YEAR(year) ((((year)-FT_YEAR_0)<<FT_YEAR_SHIFT)&FT_YEAR_MASK) #define FT_TIME_SHIFT 0 #define FT_TIME_MASK 0x01FFFFFF #define FT_TIME_MAX 0x01ea6dff /* last second of a year */ #define FT_TIME(mo,d,h,m,s) \ ((((s)+60*((m)+60*((h)+24*((d)+31*(mo))))) & FT_TIME_MASK)) #define FT_TIME_STAMP(y,mo,d,h,m,s) (FT_YEAR(y) | FT_TIME(mo,d,h,m,s)) /* values for the format code field */ typedef enum { fmt_normal = 2, /* QIC-80 post Rev. B 205Ft or 307Ft tape */ fmt_1100ft = 3, /* QIC-80 post Rev. B 1100Ft tape */ fmt_var = 4, /* QIC-80 post Rev. B variabel length format */ fmt_425ft = 5, /* QIC-80 post Rev. B 425Ft tape */ fmt_big = 6 /* QIC-3010/3020 variable length tape with more * than 2^16 segments per tape */ } ft_format_type; /* definitions for the failed sector log */ #define FT_FSL_SIZE (2 * FT_SECTOR_SIZE - FT_HEADER_END) #define FT_FSL_MAX_ENTRIES (FT_FSL_SIZE/sizeof(__u32)) typedef struct ft_fsl_entry { __u16 segment; __u16 date; } __attribute__ ((packed)) ft_fsl_entry; /* date encoding for the failed sector log * month: 1..12, day: 1..31, year: 1970..2097 */ #define FT_FSL_TIME_STAMP(y,m,d) \ (((((y) - FT_YEAR_0)<<9)&0xfe00) | (((m)<<5)&0x01e0) | ((d)&0x001f)) #endif /* _FTAPE_HEADER_SEGMENT_H */