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freebsd/usr.bin/doscmd/dos.h

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/*
* Copyright (c) 1992, 1993, 1996
* Berkeley Software Design, Inc. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Berkeley Software
* Design, Inc.
*
* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``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 Berkeley Software Design, Inc. 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.
*
* BSDI dos.h,v 2.2 1996/04/08 19:32:28 bostic Exp
*
* $FreeBSD$
*/
/*
* DOS Error codes
*/
/* MS-DOS version 2 error codes */
#define FUNC_NUM_IVALID 0x01
#define FILE_NOT_FOUND 0x02
#define PATH_NOT_FOUND 0x03
#define TOO_MANY_OPEN_FILES 0x04
#define ACCESS_DENIED 0x05
#define HANDLE_INVALID 0x06
#define MEM_CB_DEST 0x07
#define INSUF_MEM 0x08
#define MEM_BLK_ADDR_IVALID 0x09
#define ENV_INVALID 0x0a
#define FORMAT_INVALID 0x0b
#define ACCESS_CODE_INVALID 0x0c
#define DATA_INVALID 0x0d
#define UNKNOWN_UNIT 0x0e
#define DISK_DRIVE_INVALID 0x0f
#define ATT_REM_CUR_DIR 0x10
#define NOT_SAME_DEV 0x11
#define NO_MORE_FILES 0x12
/* mappings to critical-error codes */
#define WRITE_PROT_DISK 0x13
#define UNKNOWN_UNIT_CERR 0x14
#define DRIVE_NOT_READY 0x15
#define UNKNOWN_COMMAND 0x16
#define DATA_ERROR_CRC 0x17
#define BAD_REQ_STRUCT_LEN 0x18
#define SEEK_ERROR 0x19
#define UNKNOWN_MEDIA_TYPE 0x1a
#define SECTOR_NOT_FOUND 0x1b
#define PRINTER_OUT_OF_PAPER 0x1c
#define WRITE_FAULT 0x1d
#define READ_FAULT 0x1e
#define GENERAL_FAILURE 0x1f
/* MS-DOS version 3 and later extended error codes */
#define SHARING_VIOLATION 0x20
#define FILE_LOCK_VIOLATION 0x21
#define DISK_CHANGE_INVALID 0x22
#define FCB_UNAVAILABLE 0x23
#define SHARING_BUF_EXCEEDED 0x24
#define NETWORK_NAME_NOT_FOUND 0x35
#define FILE_ALREADY_EXISTS 0x50
#define DUPLICATE_REDIR 0x55
/*
* dos attribute byte flags
*/
#define REGULAR_FILE 0x00
#define READ_ONLY_FILE 0x01
#define HIDDEN_FILE 0x02
#define SYSTEM_FILE 0x04
#define VOLUME_LABEL 0x08
#define DIRECTORY 0x10
#define ARCHIVE_NEEDED 0x20
/*
* Internal structure used for get_space()
*/
typedef struct {
long bytes_sector;
long sectors_cluster;
long total_clusters;
long avail_clusters;
} fsstat_t;
/*
* Several DOS structures used by the file redirector
*/
typedef struct {
DIR *dp;
u_char *searchend;
u_char searchdir[1024];
} search_t;
/*
* This is really the format of the DTA. The file redirector will only
* use the first 21 bytes.
*/
typedef struct {
u_char drive __attribute__ ((packed));
u_char pattern[11] __attribute__ ((packed));
u_char flag __attribute__ ((packed));
u_char reserved1[4] __attribute__ ((packed));
search_t *searchptr __attribute__ ((packed));
u_char attr __attribute__ ((packed));
u_short time __attribute__ ((packed));
u_short date __attribute__ ((packed));
u_long size __attribute__ ((packed));
u_char name[13] __attribute__ ((packed));
}/* __attribute__((__packed__))*/ find_block_t;
/*
* DOS directory entry structure
*/
typedef struct {
u_char name[8] __attribute__ ((packed));
u_char ext[3] __attribute__ ((packed));
u_char attr __attribute__ ((packed));
u_char reserved[10] __attribute__ ((packed));
u_short time __attribute__ ((packed));
u_short date __attribute__ ((packed));
u_short start __attribute__ ((packed));
u_long size __attribute__ ((packed));
} dosdir_t;
/*
* The Current Drive Structure
*/
typedef struct {
u_char path[0x43] __attribute__ ((packed));
u_short flag __attribute__ ((packed));
u_short dpb_off __attribute__ ((packed));
u_short dpb_seg __attribute__ ((packed));
u_short redirector_off __attribute__ ((packed));
u_short redirector_seg __attribute__ ((packed));
u_char paramter_int21[2] __attribute__ ((packed));
u_short offset __attribute__ ((packed));
u_char dummy __attribute__ ((packed));
u_char ifs_driver[4] __attribute__ ((packed));
u_char dummy2[2] __attribute__ ((packed));
}/* __attribute__((__packed__))*/ CDS;
#define CDS_remote 0x8000
#define CDS_ready 0x4000
#define CDS_joined 0x2000
#define CDS_substed 0x1000
#define CDS_notnet 0x0080
/*
* The List of Lists (used to get the CDS and a few other numbers)
*/
typedef struct {
u_char dummy1[0x16] __attribute__ ((packed));
u_short cds_offset __attribute__ ((packed));
u_short cds_seg __attribute__ ((packed));
u_char dummy2[6] __attribute__ ((packed));
u_char numberbdev __attribute__ ((packed));
u_char lastdrive __attribute__ ((packed));
} LOL;
/*
* The System File Table
*/
typedef struct {
/*00*/ u_short nfiles __attribute__ ((packed)); /* Number file handles referring to this file */
/*02*/ u_short open_mode __attribute__ ((packed)); /* Open mode (bit 15 -> by FCB) */
/*04*/ u_char attribute __attribute__ ((packed));
/*05*/ u_short info __attribute__ ((packed)); /* 15 -> remote, 14 -> dont set date */
/*07*/ u_char ddr_dpb[4] __attribute__ ((packed)); /* Device Driver Header/Drive Paramter Block */
/*0b*/ u_short fd __attribute__ ((packed));
/*0d*/ u_short time __attribute__ ((packed));
/*0f*/ u_short date __attribute__ ((packed));
/*11*/ u_long size __attribute__ ((packed));
/*15*/ u_long offset __attribute__ ((packed));
/*19*/ u_short rel_cluster __attribute__ ((packed));
/*1b*/ u_short abs_cluster __attribute__ ((packed));
/*1d*/ u_char dir_sector[2] __attribute__ ((packed));
/*1f*/ u_char dir_entry __attribute__ ((packed));
/*20*/ u_char name[8] __attribute__ ((packed));
/*28*/ u_char ext[3] __attribute__ ((packed));
/*2b*/ u_char sharesft[4] __attribute__ ((packed));
/*2f*/ u_char sharenet[2] __attribute__ ((packed));
/*31*/ u_short psp __attribute__ ((packed));
/*33*/ u_char share_off[2] __attribute__ ((packed));
/*35*/ u_char local_end[2] __attribute__ ((packed));
/*37*/ u_char ifd_driver[4] __attribute__ ((packed));
} /*__attribute__((__packed__))*/ SFT;
/*
* Format of PCDOS 4.01 swappable data area
* (Sorry, but you need a wide screen to make this look nice)
*/
typedef struct {
u_char err_crit __attribute__ ((packed)); /* 00h BYTE critical error flag */
u_char InDOS __attribute__ ((packed)); /* 01h BYTE InDOS flag (count of active INT 21 calls) */
u_char err_drive __attribute__ ((packed)); /* 02h BYTE ??? drive number or FFh */
u_char err_locus __attribute__ ((packed)); /* 03h BYTE locus of last error */
u_short err_code __attribute__ ((packed)); /* 04h WORD extended error code of last error */
u_char err_suggest __attribute__ ((packed)); /* 06h BYTE suggested action for last error */
u_char err_class __attribute__ ((packed)); /* 07h BYTE class of last error */
u_short err_di __attribute__ ((packed));
u_short err_es __attribute__ ((packed)); /* 08h DWORD ES:DI pointer for last error */
u_short dta_off __attribute__ ((packed));
u_short dta_seg __attribute__ ((packed)); /* 0Ch DWORD current DTA */
u_short psp __attribute__ ((packed)); /* 10h WORD current PSP */
u_short int_23_sp __attribute__ ((packed)); /* 12h WORD stores SP across an INT 23 */
u_short wait_status __attribute__ ((packed)); /* 14h WORD return code from last process termination (zerod after reading with AH=4Dh) */
u_char current_drive __attribute__ ((packed)); /* 16h BYTE current drive */
u_char break_flag __attribute__ ((packed)); /* 17h BYTE extended break flag */
u_char unknown1[2] __attribute__ ((packed)); /* 18h 2 BYTEs ??? */
u_short int_21_ax __attribute__ ((packed)); /* 1Ah WORD value of AX on call to INT 21 */
u_short net_psp __attribute__ ((packed)); /* 1Ch WORD PSP segment for sharing/network */
u_short net_number __attribute__ ((packed)); /* 1Eh WORD network machine number for sharing/network (0000h = us) */
u_short first_mem __attribute__ ((packed)); /* 20h WORD first usable memory block found when allocating memory */
u_short best_mem __attribute__ ((packed)); /* 22h WORD best usable memory block found when allocating memory */
u_short last_mem __attribute__ ((packed)); /* 24h WORD last usable memory block found when allocating memory */
u_char unknown[10] __attribute__ ((packed)); /* 26h 2 BYTEs ??? (don't seem to be referenced) */
u_char monthday __attribute__ ((packed)); /* 30h BYTE day of month */
u_char month __attribute__ ((packed)); /* 31h BYTE month */
u_short year __attribute__ ((packed)); /* 32h WORD year - 1980 */
u_short days __attribute__ ((packed)); /* 34h WORD number of days since 1-1-1980 */
u_char weekday __attribute__ ((packed)); /* 36h BYTE day of week (0 = Sunday) */
u_char unknown2[3] __attribute__ ((packed)); /* 37h BYTE ??? */
u_char ddr_head[30] __attribute__ ((packed)); /* 38h 30 BYTEs device driver request header */
u_short ddre_ip __attribute__ ((packed));
u_short ddre_cs __attribute__ ((packed)); /* 58h DWORD pointer to device driver entry point (used in calling driver) */
u_char ddr_head2[22] __attribute__ ((packed)); /* 5Ch 22 BYTEs device driver request header */
u_char ddr_head3[30] __attribute__ ((packed)); /* 72h 30 BYTEs device driver request header */
u_char unknown3[6] __attribute__ ((packed)); /* 90h 6 BYTEs ??? */
u_char clock_xfer[6] __attribute__ ((packed)); /* 96h 6 BYTEs CLOCK$ transfer record (see AH=52h) */
u_char unknown4[2] __attribute__ ((packed)); /* 9Ch 2 BYTEs ??? */
u_char filename1[128] __attribute__ ((packed)); /* 9Eh 128 BYTEs buffer for filename */
u_char filename2[128] __attribute__ ((packed)); /* 11Eh 128 BYTEs buffer for filename */
u_char findfirst[21] __attribute__ ((packed)); /* 19Eh 21 BYTEs findfirst/findnext search data block (see AH=4Eh) */
u_char foundentry[32] __attribute__ ((packed)); /* 1B3h 32 BYTEs directory entry for found file */
u_char cds[88] __attribute__ ((packed)); /* 1D3h 88 BYTEs copy of current directory structure for drive being accessed */
u_char fcbname[11] __attribute__ ((packed)); /* 22Bh 11 BYTEs ??? FCB-format filename */
u_char unknown5 __attribute__ ((packed)); /* 236h BYTE ??? */
u_char wildcard[11] __attribute__ ((packed)); /* 237h 11 BYTEs wildcard destination specification for rename (FCB format) */
u_char unknown6[11] __attribute__ ((packed)); /* 242h 2 BYTEs ??? */
u_char attrmask __attribute__ ((packed)); /* 24Dh BYTE attribute mask for directory search??? */
u_char open_mode __attribute__ ((packed)); /* 24Eh BYTE open mode */
u_char unknown7[3] __attribute__ ((packed)); /* 24fh BYTE ??? */
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) */
u_char unknown8[9] __attribute__ ((packed)); /* 253h BYTE ??? */
u_char term_type __attribute__ ((packed)); /* 25Ch BYTE type of process termination (00h-03h) */
u_char unknown9[3] __attribute__ ((packed)); /* 25Dh BYTE ??? */
u_short dpb_off __attribute__ ((packed));
u_short dpb_seg __attribute__ ((packed)); /* 260h DWORD pointer to Drive Parameter Block for critical error invocation */
u_short int21_sf_off __attribute__ ((packed));
u_short int21_sf_seg __attribute__ ((packed)); /* 264h DWORD pointer to stack frame containing user registers on INT 21 */
u_short store_sp __attribute__ ((packed)); /* 268h WORD stores SP??? */
u_short dosdpb_off __attribute__ ((packed));
u_short dosdpb_seg __attribute__ ((packed)); /* 26Ah DWORD pointer to DOS Drive Parameter Block for ??? */
u_short disk_buf_seg __attribute__ ((packed)); /* 26Eh WORD segment of disk buffer */
u_short unknown10[4] __attribute__ ((packed)); /* 270h WORD ??? */
u_char media_id __attribute__ ((packed)); /* 278h BYTE Media ID byte returned by AH=1Bh,1Ch */
u_char unknown11 __attribute__ ((packed)); /* 279h BYTE ??? (doesn't seem to be referenced) */
u_short unknown12[2] __attribute__ ((packed)); /* 27Ah DWORD pointer to ??? */
u_short sft_off __attribute__ ((packed));
u_short sft_seg __attribute__ ((packed)); /* 27Eh DWORD pointer to current SFT */
u_short cds_off __attribute__ ((packed));
u_short cds_seg __attribute__ ((packed)); /* 282h DWORD pointer to current directory structure for drive being accessed */
u_short fcb_off __attribute__ ((packed));
u_short fcb_seg __attribute__ ((packed)); /* 286h DWORD pointer to caller's FCB */
u_short unknown13[2] __attribute__ ((packed)); /* 28Ah WORD ??? */
u_short jft_off __attribute__ ((packed));
u_short jft_seg __attribute__ ((packed)); /* 28Eh DWORD pointer to a JFT entry in process handle table (see AH=26h) */
u_short filename1_off __attribute__ ((packed)); /* 292h WORD offset in DOS CS of first filename argument */
u_short filename2_off __attribute__ ((packed)); /* 294h WORD offset in DOS CS of second filename argument */
u_short unknown14[12] __attribute__ ((packed)); /* 296h WORD ??? */
u_short file_offset_lo __attribute__ ((packed));
u_short file_offset_hi __attribute__ ((packed)); /* 2AEh DWORD offset in file??? */
u_short unknown15 __attribute__ ((packed)); /* 2B2h WORD ??? */
u_short partial_bytes __attribute__ ((packed)); /* 2B4h WORD bytes in partial sector */
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 const 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);
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