| /* |
| * Copyright (c) 1996, 1998 Robert Nordier |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS |
| * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
| * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * $FreeBSD$ |
| */ |
| |
| #ifndef DOSIO_H |
| #define DOSIO_H |
| |
| /* |
| * DOS file attributes |
| */ |
| |
| #define FA_RDONLY 001 /* read-only */ |
| #define FA_HIDDEN 002 /* hidden file */ |
| #define FA_SYSTEM 004 /* system file */ |
| #define FA_LABEL 010 /* volume label */ |
| #define FA_DIR 020 /* directory */ |
| #define FA_ARCH 040 /* archive (file modified) */ |
| #define FA_XDE 017 /* extended directory entry */ |
| #define FA_MASK 077 /* all attributes */ |
| |
| /* |
| * Macros to convert DOS-format 16-bit and 32-bit quantities |
| */ |
| |
| #define cv2(p) ((u_int16_t)(p)[0] | \ |
| ((u_int16_t)(p)[1] << 010)) |
| #define cv4(p) ((u_int32_t)(p)[0] | \ |
| ((u_int32_t)(p)[1] << 010) | \ |
| ((u_int32_t)(p)[2] << 020) | \ |
| ((u_int32_t)(p)[3] << 030)) |
| |
| /* |
| * Directory, filesystem, and file structures. |
| */ |
| |
| typedef struct { |
| u_char x_case; /* case */ |
| u_char c_hsec; /* created: secs/100 */ |
| u_char c_time[2]; /* created: time */ |
| u_char c_date[2]; /* created: date */ |
| u_char a_date[2]; /* accessed: date */ |
| u_char h_clus[2]; /* clus[hi] */ |
| } DOS_DEX; |
| |
| typedef struct { |
| u_char name[8]; /* name */ |
| u_char ext[3]; /* extension */ |
| u_char attr; /* attributes */ |
| DOS_DEX dex; /* VFAT/FAT32 only */ |
| u_char time[2]; /* modified: time */ |
| u_char date[2]; /* modified: date */ |
| u_char clus[2]; /* starting cluster */ |
| u_char size[4]; /* size */ |
| } DOS_DE; |
| |
| typedef struct { |
| u_char seq; /* flags */ |
| u_char name1[5][2]; /* 1st name area */ |
| u_char attr; /* (see fat_de) */ |
| u_char res; /* reserved */ |
| u_char chk; /* checksum */ |
| u_char name2[6][2]; /* 2nd name area */ |
| u_char clus[2]; /* (see fat_de) */ |
| u_char name3[2][2]; /* 3rd name area */ |
| } DOS_XDE; |
| |
| typedef union { |
| DOS_DE de; /* standard directory entry */ |
| DOS_XDE xde; /* extended directory entry */ |
| } DOS_DIR; |
| |
| typedef struct { |
| struct open_file *fd; /* file descriptor */ |
| u_int links; /* active links to structure */ |
| u_int spc; /* sectors per cluster */ |
| u_int bsize; /* cluster size in bytes */ |
| u_int bshift; /* cluster conversion shift */ |
| u_int dirents; /* root directory entries */ |
| u_int spf; /* sectors per fat */ |
| u_int rdcl; /* root directory start cluster */ |
| u_int lsnfat; /* start of fat */ |
| u_int lsndir; /* start of root dir */ |
| u_int lsndta; /* start of data area */ |
| u_int fatsz; /* FAT entry size */ |
| u_int xclus; /* maximum cluster number */ |
| DOS_DE root; |
| } DOS_FS; |
| |
| typedef struct { |
| DOS_FS *fs; /* associated filesystem */ |
| DOS_DE de; /* directory entry */ |
| u_int offset; /* current offset */ |
| u_int c; /* last cluster read */ |
| } DOS_FILE; |
| |
| #endif /* !DOSIO_H */ |