403 lines
20 KiB
C
403 lines
20 KiB
C
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/*
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* Copyright (c) 1992, 1993, 1996
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* Berkeley Software Design, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Berkeley Software
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* Design, Inc.
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*
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* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* BSDI dos.h,v 2.2 1996/04/08 19:32:28 bostic Exp
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*
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* $Id: dos.h,v 1.7 1996/09/23 09:59:24 miff Exp $
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*/
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/*
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* DOS Error codes
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*/
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/* MS-DOS version 2 error codes */
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#define FUNC_NUM_IVALID 0x01
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#define FILE_NOT_FOUND 0x02
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#define PATH_NOT_FOUND 0x03
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#define TOO_MANY_OPEN_FILES 0x04
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#define ACCESS_DENIED 0x05
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#define HANDLE_INVALID 0x06
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#define MEM_CB_DEST 0x07
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#define INSUF_MEM 0x08
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#define MEM_BLK_ADDR_IVALID 0x09
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#define ENV_INVALID 0x0a
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#define FORMAT_INVALID 0x0b
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#define ACCESS_CODE_INVALID 0x0c
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#define DATA_INVALID 0x0d
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#define UNKNOWN_UNIT 0x0e
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#define DISK_DRIVE_INVALID 0x0f
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#define ATT_REM_CUR_DIR 0x10
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#define NOT_SAME_DEV 0x11
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#define NO_MORE_FILES 0x12
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/* mappings to critical-error codes */
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#define WRITE_PROT_DISK 0x13
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#define UNKNOWN_UNIT_CERR 0x14
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#define DRIVE_NOT_READY 0x15
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#define UNKNOWN_COMMAND 0x16
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#define DATA_ERROR_CRC 0x17
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#define BAD_REQ_STRUCT_LEN 0x18
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#define SEEK_ERROR 0x19
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#define UNKNOWN_MEDIA_TYPE 0x1a
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#define SECTOR_NOT_FOUND 0x1b
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#define PRINTER_OUT_OF_PAPER 0x1c
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#define WRITE_FAULT 0x1d
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#define READ_FAULT 0x1e
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#define GENERAL_FAILURE 0x1f
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/* MS-DOS version 3 and later extended error codes */
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#define SHARING_VIOLATION 0x20
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#define FILE_LOCK_VIOLATION 0x21
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#define DISK_CHANGE_INVALID 0x22
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#define FCB_UNAVAILABLE 0x23
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#define SHARING_BUF_EXCEEDED 0x24
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#define NETWORK_NAME_NOT_FOUND 0x35
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#define FILE_ALREADY_EXISTS 0x50
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#define DUPLICATE_REDIR 0x55
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/*
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* dos attribute byte flags
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*/
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#define REGULAR_FILE 0x00
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#define READ_ONLY_FILE 0x01
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#define HIDDEN_FILE 0x02
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#define SYSTEM_FILE 0x04
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#define VOLUME_LABEL 0x08
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#define DIRECTORY 0x10
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#define ARCHIVE_NEEDED 0x20
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/*
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* Internal structure used for get_space()
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*/
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typedef struct {
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long bytes_sector;
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long sectors_cluster;
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long total_clusters;
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long avail_clusters;
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} fsstat_t;
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/*
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* Several DOS structures used by the file redirector
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*/
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typedef struct {
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DIR *dp;
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u_char *searchend;
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u_char searchdir[1024];
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} search_t;
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/*
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* This is really the format of the DTA. The file redirector will only
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* use the first 21 bytes.
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*/
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typedef struct {
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u_char drive __attribute__ ((packed));
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u_char pattern[11] __attribute__ ((packed));
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u_char flag __attribute__ ((packed));
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u_char reserved1[4] __attribute__ ((packed));
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search_t *searchptr __attribute__ ((packed));
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u_char attr __attribute__ ((packed));
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u_short time __attribute__ ((packed));
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u_short date __attribute__ ((packed));
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u_long size __attribute__ ((packed));
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u_char name[13] __attribute__ ((packed));
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}/* __attribute__((__packed__))*/ find_block_t;
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/*
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* DOS directory entry structure
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*/
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typedef struct {
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u_char name[8] __attribute__ ((packed));
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u_char ext[3] __attribute__ ((packed));
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u_char attr __attribute__ ((packed));
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u_char reserved[10] __attribute__ ((packed));
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u_short time __attribute__ ((packed));
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u_short date __attribute__ ((packed));
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u_short start __attribute__ ((packed));
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u_long size __attribute__ ((packed));
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} dosdir_t;
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/*
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* The Current Drive Structure
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*/
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typedef struct {
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u_char path[0x43] __attribute__ ((packed));
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u_short flag __attribute__ ((packed));
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u_short dpb_off __attribute__ ((packed));
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u_short dpb_seg __attribute__ ((packed));
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u_short redirector_off __attribute__ ((packed));
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u_short redirector_seg __attribute__ ((packed));
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u_char paramter_int21[2] __attribute__ ((packed));
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u_short offset __attribute__ ((packed));
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u_char dummy __attribute__ ((packed));
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u_char ifs_driver[4] __attribute__ ((packed));
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u_char dummy2[2] __attribute__ ((packed));
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}/* __attribute__((__packed__))*/ CDS;
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#define CDS_remote 0x8000
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#define CDS_ready 0x4000
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#define CDS_joined 0x2000
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#define CDS_substed 0x1000
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#define CDS_notnet 0x0080
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/*
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* The List of Lists (used to get the CDS and a few other numbers)
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*/
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typedef struct {
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u_char dummy1[0x16] __attribute__ ((packed));
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u_short cds_offset __attribute__ ((packed));
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u_short cds_seg __attribute__ ((packed));
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u_char dummy2[6] __attribute__ ((packed));
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u_char numberbdev __attribute__ ((packed));
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u_char lastdrive __attribute__ ((packed));
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} LOL;
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/*
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* The System File Table
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*/
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typedef struct {
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/*00*/ u_short nfiles __attribute__ ((packed)); /* Number file handles referring to this file */
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/*02*/ u_short open_mode __attribute__ ((packed)); /* Open mode (bit 15 -> by FCB) */
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/*04*/ u_char attribute __attribute__ ((packed));
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/*05*/ u_short info __attribute__ ((packed)); /* 15 -> remote, 14 -> dont set date */
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/*07*/ u_char ddr_dpb[4] __attribute__ ((packed)); /* Device Driver Header/Drive Paramter Block */
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/*0b*/ u_short fd __attribute__ ((packed));
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/*0d*/ u_short time __attribute__ ((packed));
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/*0f*/ u_short date __attribute__ ((packed));
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/*11*/ u_long size __attribute__ ((packed));
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/*15*/ u_long offset __attribute__ ((packed));
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/*19*/ u_short rel_cluster __attribute__ ((packed));
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/*1b*/ u_short abs_cluster __attribute__ ((packed));
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/*1d*/ u_char dir_sector[2] __attribute__ ((packed));
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/*1f*/ u_char dir_entry __attribute__ ((packed));
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/*20*/ u_char name[8] __attribute__ ((packed));
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/*28*/ u_char ext[3] __attribute__ ((packed));
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/*2b*/ u_char sharesft[4] __attribute__ ((packed));
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/*2f*/ u_char sharenet[2] __attribute__ ((packed));
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/*31*/ u_short psp __attribute__ ((packed));
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/*33*/ u_char share_off[2] __attribute__ ((packed));
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/*35*/ u_char local_end[2] __attribute__ ((packed));
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/*37*/ u_char ifd_driver[4] __attribute__ ((packed));
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} /*__attribute__((__packed__))*/ SFT;
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/*
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* Format of PCDOS 4.01 swappable data area
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* (Sorry, but you need a wide screen to make this look nice)
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*/
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typedef struct {
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u_char err_crit __attribute__ ((packed)); /* 00h BYTE critical error flag */
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u_char InDOS __attribute__ ((packed)); /* 01h BYTE InDOS flag (count of active INT 21 calls) */
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u_char err_drive __attribute__ ((packed)); /* 02h BYTE ??? drive number or FFh */
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u_char err_locus __attribute__ ((packed)); /* 03h BYTE locus of last error */
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u_short err_code __attribute__ ((packed)); /* 04h WORD extended error code of last error */
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u_char err_suggest __attribute__ ((packed)); /* 06h BYTE suggested action for last error */
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u_char err_class __attribute__ ((packed)); /* 07h BYTE class of last error */
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u_short err_di __attribute__ ((packed));
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u_short err_es __attribute__ ((packed)); /* 08h DWORD ES:DI pointer for last error */
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u_short dta_off __attribute__ ((packed));
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u_short dta_seg __attribute__ ((packed)); /* 0Ch DWORD current DTA */
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u_short psp __attribute__ ((packed)); /* 10h WORD current PSP */
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u_short int_23_sp __attribute__ ((packed)); /* 12h WORD stores SP across an INT 23 */
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u_short wait_status __attribute__ ((packed)); /* 14h WORD return code from last process termination (zerod after reading with AH=4Dh) */
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u_char current_drive __attribute__ ((packed)); /* 16h BYTE current drive */
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u_char break_flag __attribute__ ((packed)); /* 17h BYTE extended break flag */
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u_char unknown1[2] __attribute__ ((packed)); /* 18h 2 BYTEs ??? */
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u_short int_21_ax __attribute__ ((packed)); /* 1Ah WORD value of AX on call to INT 21 */
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u_short net_psp __attribute__ ((packed)); /* 1Ch WORD PSP segment for sharing/network */
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u_short net_number __attribute__ ((packed)); /* 1Eh WORD network machine number for sharing/network (0000h = us) */
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u_short first_mem __attribute__ ((packed)); /* 20h WORD first usable memory block found when allocating memory */
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u_short best_mem __attribute__ ((packed)); /* 22h WORD best usable memory block found when allocating memory */
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u_short last_mem __attribute__ ((packed)); /* 24h WORD last usable memory block found when allocating memory */
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u_char unknown[10] __attribute__ ((packed)); /* 26h 2 BYTEs ??? (don't seem to be referenced) */
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u_char monthday __attribute__ ((packed)); /* 30h BYTE day of month */
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u_char month __attribute__ ((packed)); /* 31h BYTE month */
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u_short year __attribute__ ((packed)); /* 32h WORD year - 1980 */
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u_short days __attribute__ ((packed)); /* 34h WORD number of days since 1-1-1980 */
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u_char weekday __attribute__ ((packed)); /* 36h BYTE day of week (0 = Sunday) */
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u_char unknown2[3] __attribute__ ((packed)); /* 37h BYTE ??? */
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u_char ddr_head[30] __attribute__ ((packed)); /* 38h 30 BYTEs device driver request header */
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u_short ddre_ip __attribute__ ((packed));
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u_short ddre_cs __attribute__ ((packed)); /* 58h DWORD pointer to device driver entry point (used in calling driver) */
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u_char ddr_head2[22] __attribute__ ((packed)); /* 5Ch 22 BYTEs device driver request header */
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u_char ddr_head3[30] __attribute__ ((packed)); /* 72h 30 BYTEs device driver request header */
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u_char unknown3[6] __attribute__ ((packed)); /* 90h 6 BYTEs ??? */
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u_char clock_xfer[6] __attribute__ ((packed)); /* 96h 6 BYTEs CLOCK$ transfer record (see AH=52h) */
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u_char unknown4[2] __attribute__ ((packed)); /* 9Ch 2 BYTEs ??? */
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u_char filename1[128] __attribute__ ((packed)); /* 9Eh 128 BYTEs buffer for filename */
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u_char filename2[128] __attribute__ ((packed)); /* 11Eh 128 BYTEs buffer for filename */
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u_char findfirst[21] __attribute__ ((packed)); /* 19Eh 21 BYTEs findfirst/findnext search data block (see AH=4Eh) */
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u_char foundentry[32] __attribute__ ((packed)); /* 1B3h 32 BYTEs directory entry for found file */
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u_char cds[88] __attribute__ ((packed)); /* 1D3h 88 BYTEs copy of current directory structure for drive being accessed */
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u_char fcbname[11] __attribute__ ((packed)); /* 22Bh 11 BYTEs ??? FCB-format filename */
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u_char unknown5 __attribute__ ((packed)); /* 236h BYTE ??? */
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u_char wildcard[11] __attribute__ ((packed)); /* 237h 11 BYTEs wildcard destination specification for rename (FCB format) */
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u_char unknown6[11] __attribute__ ((packed)); /* 242h 2 BYTEs ??? */
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u_char attrmask __attribute__ ((packed)); /* 24Dh BYTE attribute mask for directory search??? */
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u_char open_mode __attribute__ ((packed)); /* 24Eh BYTE open mode */
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u_char unknown7[3] __attribute__ ((packed)); /* 24fh BYTE ??? */
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u_char virtual_dos __attribute__ ((packed)); /* 252h BYTE flag indicating how DOS function was invoked (00h = direct INT 20/INT 21, FFh = server call AX=5D00h) */
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u_char unknown8[9] __attribute__ ((packed)); /* 253h BYTE ??? */
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u_char term_type __attribute__ ((packed)); /* 25Ch BYTE type of process termination (00h-03h) */
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u_char unknown9[3] __attribute__ ((packed)); /* 25Dh BYTE ??? */
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u_short dpb_off __attribute__ ((packed));
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u_short dpb_seg __attribute__ ((packed)); /* 260h DWORD pointer to Drive Parameter Block for critical error invocation */
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u_short int21_sf_off __attribute__ ((packed));
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u_short int21_sf_seg __attribute__ ((packed)); /* 264h DWORD pointer to stack frame containing user registers on INT 21 */
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u_short store_sp __attribute__ ((packed)); /* 268h WORD stores SP??? */
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u_short dosdpb_off __attribute__ ((packed));
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u_short dosdpb_seg __attribute__ ((packed)); /* 26Ah DWORD pointer to DOS Drive Parameter Block for ??? */
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u_short disk_buf_seg __attribute__ ((packed)); /* 26Eh WORD segment of disk buffer */
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u_short unknown10[4] __attribute__ ((packed)); /* 270h WORD ??? */
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u_char media_id __attribute__ ((packed)); /* 278h BYTE Media ID byte returned by AH=1Bh,1Ch */
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u_char unknown11 __attribute__ ((packed)); /* 279h BYTE ??? (doesn't seem to be referenced) */
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u_short unknown12[2] __attribute__ ((packed)); /* 27Ah DWORD pointer to ??? */
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u_short sft_off __attribute__ ((packed));
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u_short sft_seg __attribute__ ((packed)); /* 27Eh DWORD pointer to current SFT */
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u_short cds_off __attribute__ ((packed));
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u_short cds_seg __attribute__ ((packed)); /* 282h DWORD pointer to current directory structure for drive being accessed */
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u_short fcb_off __attribute__ ((packed));
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u_short fcb_seg __attribute__ ((packed)); /* 286h DWORD pointer to caller's FCB */
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u_short unknown13[2] __attribute__ ((packed)); /* 28Ah WORD ??? */
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u_short jft_off __attribute__ ((packed));
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u_short jft_seg __attribute__ ((packed)); /* 28Eh DWORD pointer to a JFT entry in process handle table (see AH=26h) */
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u_short filename1_off __attribute__ ((packed)); /* 292h WORD offset in DOS CS of first filename argument */
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u_short filename2_off __attribute__ ((packed)); /* 294h WORD offset in DOS CS of second filename argument */
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u_short unknown14[12] __attribute__ ((packed)); /* 296h WORD ??? */
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u_short file_offset_lo __attribute__ ((packed));
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u_short file_offset_hi __attribute__ ((packed)); /* 2AEh DWORD offset in file??? */
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u_short unknown15 __attribute__ ((packed)); /* 2B2h WORD ??? */
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u_short partial_bytes __attribute__ ((packed)); /* 2B4h WORD bytes in partial sector */
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u_short number_sectors __attribute__ ((packed)); /* 2B6h WORD number of sectors */
|
||
|
|
u_short unknown16[3] __attribute__ ((packed)); /* 2B8h WORD ??? */
|
||
|
|
u_short nbytes_lo __attribute__ ((packed));
|
||
|
|
u_short nbytes_hi __attribute__ ((packed)); /* 2BEh DWORD number of bytes appended to file */
|
||
|
|
u_short qpdb_off __attribute__ ((packed));
|
||
|
|
u_short qpdb_seg __attribute__ ((packed)); /* 2C2h DWORD pointer to ??? disk buffer */
|
||
|
|
u_short asft_off __attribute__ ((packed));
|
||
|
|
u_short asft_seg __attribute__ ((packed)); /* 2C6h DWORD pointer to ??? SFT */
|
||
|
|
u_short int21_bx __attribute__ ((packed)); /* 2CAh WORD used by INT 21 dispatcher to store caller's BX */
|
||
|
|
u_short int21_ds __attribute__ ((packed)); /* 2CCh WORD used by INT 21 dispatcher to store caller's DS */
|
||
|
|
u_short temporary __attribute__ ((packed)); /* 2CEh WORD temporary storage while saving/restoring caller's registers */
|
||
|
|
u_short prevcall_off __attribute__ ((packed));
|
||
|
|
u_short prevcall_seg __attribute__ ((packed)); /* 2D0h DWORD pointer to prev call frame (offset 264h) if INT 21 reentered also switched to for duration of INT 24 */
|
||
|
|
u_char unknown17[9] __attribute__ ((packed)); /* 2D4h WORD ??? */
|
||
|
|
u_short ext_action __attribute__ ((packed)); /* 2DDh WORD multipurpose open action */
|
||
|
|
u_short ext_attr __attribute__ ((packed)); /* 2DFh WORD multipurpose attribute */
|
||
|
|
u_short ext_mode __attribute__ ((packed)); /* 2E1h WORD multipurpose mode */
|
||
|
|
u_char unknown17a[9] __attribute__ ((packed));
|
||
|
|
u_short lol_ds __attribute__ ((packed)); /* 2ECh WORD stores DS during call to [List-of-Lists + 37h] */
|
||
|
|
u_char unknown18[5] __attribute__ ((packed)); /* 2EEh WORD ??? */
|
||
|
|
u_char usernameptr[4] __attribute__ ((packed)); /* 2F3h DWORD pointer to user-supplied filename */
|
||
|
|
u_char unknown19[4] __attribute__ ((packed)); /* 2F7h DWORD pointer to ??? */
|
||
|
|
u_char lol_ss[2] __attribute__ ((packed)); /* 2FBh WORD stores SS during call to [List-of-Lists + 37h] */
|
||
|
|
u_char lol_sp[2] __attribute__ ((packed)); /* 2FDh WORD stores SP during call to [List-of-Lists + 37h] */
|
||
|
|
u_char lol_flag __attribute__ ((packed)); /* 2FFh BYTE flag, nonzero if stack switched in calling [List-of-Lists+37h] */
|
||
|
|
u_char searchdata[21] __attribute__ ((packed)); /* 300h 21 BYTEs FindFirst search data for source file(s) of a rename operation (see AH=4Eh) */
|
||
|
|
u_char renameentry[32] __attribute__ ((packed)); /* 315h 32 BYTEs directory entry for file being renamed */
|
||
|
|
u_char errstack[331] __attribute__ ((packed)); /* 335h 331 BYTEs critical error stack */
|
||
|
|
u_char diskstack[384] __attribute__ ((packed)); /* 480h 384 BYTEs disk stack (functions greater than 0Ch, INT 25, INT 26) */
|
||
|
|
u_char iostack[384] __attribute__ ((packed)); /* 600h 384 BYTEs character I/O stack (functions 01h through 0Ch) */
|
||
|
|
u_char int_21_08_flag __attribute__ ((packed)); /* 780h BYTE flag affecting AH=08h (see AH=64h) */
|
||
|
|
u_char unknown20[11] __attribute__ ((packed)); /* 781h BYTE ??? looks like a drive number */
|
||
|
|
} /*__attribute__((__packed__))*/ SDA;
|
||
|
|
|
||
|
|
struct exehdr {
|
||
|
|
u_short magic;
|
||
|
|
u_short bytes_on_last_page;
|
||
|
|
u_short size; /* 512 byte blocks */
|
||
|
|
u_short nreloc;
|
||
|
|
u_short hdr_size; /* paragraphs */
|
||
|
|
u_short min_memory; /* paragraphs */
|
||
|
|
u_short max_memory; /* pargraphs */
|
||
|
|
u_short init_ss;
|
||
|
|
u_short init_sp;
|
||
|
|
u_short checksum;
|
||
|
|
u_short init_ip;
|
||
|
|
u_short init_cs;
|
||
|
|
u_short reloc_offset;
|
||
|
|
u_short overlay_num;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct reloc_entry {
|
||
|
|
u_short off;
|
||
|
|
u_short seg;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
** DOS-related shrapnel
|
||
|
|
*/
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
from_dos_attr(int attr)
|
||
|
|
{
|
||
|
|
return((attr & READ_ONLY_FILE) ? 0444 : 0666);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
to_dos_attr(int mode)
|
||
|
|
{
|
||
|
|
int attr;
|
||
|
|
|
||
|
|
attr = (mode & 0200) ? 0:READ_ONLY_FILE;
|
||
|
|
attr |= S_ISDIR(mode) ? DIRECTORY:0;
|
||
|
|
return(attr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* prototypes */
|
||
|
|
|
||
|
|
extern char *dos_return[]; /* names of DOS return codes */
|
||
|
|
extern const int dos_ret_size; /* length of above */
|
||
|
|
extern char *InDOS;
|
||
|
|
extern int diskdrive; /* current drive */
|
||
|
|
unsigned long disk_transfer_addr;
|
||
|
|
|
||
|
|
extern void encode_dos_file_time (time_t, u_short *, u_short *);
|
||
|
|
extern time_t decode_dos_file_time(u_short dosdate, u_short dostime);
|
||
|
|
extern int translate_filename(u_char *dname, u_char *uname, int *drivep);
|
||
|
|
extern int parse_filename(int flag, char *str, char *fcb, int *nb);
|
||
|
|
extern void dos_init(void);
|
||
|
|
|
||
|
|
/* from exe.c */
|
||
|
|
extern int pspseg; /* segment # of PSP */
|
||
|
|
extern int curpsp;
|
||
|
|
|
||
|
|
extern void exec_command(regcontext_t *REGS, int run, int fd, char *cmdname, u_short *param);
|
||
|
|
extern void load_overlay(int fd, int start_segment, int reloc_segment);
|
||
|
|
extern void load_command(regcontext_t *REGS, int run, int fd, char *cmdname,
|
||
|
|
u_short *param, char **argv, char **envs);
|
||
|
|
extern void exec_return(regcontext_t *REGS, int code);
|
||
|
|
extern int get_env(void);
|
||
|
|
|
||
|
|
/* from setver.c */
|
||
|
|
extern void setver(char *cmd, short version);
|
||
|
|
extern short getver(char *cmd);
|