1997-08-09 01:43:15 +00:00
|
|
|
/*
|
|
|
|
* Copyright (c) 1996
|
|
|
|
* Michael Smith. All rights reserved.
|
|
|
|
* 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 int21.c,v 2.2 1996/04/08 19:32:51 bostic Exp
|
|
|
|
*
|
1999-08-28 01:08:13 +00:00
|
|
|
* $FreeBSD$
|
1997-08-09 01:43:15 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include "doscmd.h"
|
|
|
|
#include <dirent.h>
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/mount.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <time.h>
|
|
|
|
#include <glob.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <ctype.h>
|
2000-12-09 09:35:55 +00:00
|
|
|
#include <paths.h>
|
1997-08-09 01:43:15 +00:00
|
|
|
#include <stddef.h>
|
|
|
|
|
|
|
|
#include "dispatch.h"
|
|
|
|
|
|
|
|
static u_long upcase_vector;
|
|
|
|
|
|
|
|
/* Country Info */
|
|
|
|
struct {
|
|
|
|
ushort ciDateFormat;
|
|
|
|
char ciCurrency[5];
|
|
|
|
char ciThousands[2];
|
|
|
|
char ciDecimal[2];
|
|
|
|
char ciDateSep[2];
|
|
|
|
char ciTimeSep[2];
|
|
|
|
char ciCurrencyFormat;
|
|
|
|
char ciCurrencyPlaces;
|
|
|
|
char ciTimeFormat;
|
|
|
|
ushort ciCaseMapOffset;
|
|
|
|
ushort ciCaseMapSegment;
|
|
|
|
char ciDataSep[2];
|
|
|
|
#if 0
|
|
|
|
char ciReserved[10];
|
|
|
|
#endif
|
|
|
|
} countryinfo = {
|
|
|
|
0, "$", ",", ".", "-", ":", 0, 2, 0, 0xffff, 0xffff, "?"
|
|
|
|
};
|
|
|
|
|
|
|
|
/* DOS File Control Block */
|
|
|
|
struct fcb {
|
|
|
|
u_char fcbMagic;
|
|
|
|
u_char fcbResoived[5];
|
|
|
|
u_char fcbAttribute;
|
|
|
|
u_char fcbDriveID;
|
|
|
|
u_char fcbFileName[8];
|
|
|
|
u_char fcbExtent[3];
|
|
|
|
u_short fcbCurBlockNo;
|
|
|
|
u_short fcbRecSize;
|
|
|
|
u_long fcbFileSize;
|
|
|
|
u_short fcbFileDate;
|
|
|
|
u_short fcbFileTime;
|
|
|
|
int fcbReserved;
|
|
|
|
int fcb_fd; /* hide UNIX FD here */
|
|
|
|
u_char fcbCurRecNo;
|
|
|
|
u_long fcbRandomRecNo;
|
|
|
|
}/* __attribute__((__packed__))*/;
|
|
|
|
|
|
|
|
/* exports */
|
|
|
|
void encode_dos_file_time (time_t, u_short *, u_short *);
|
|
|
|
int diskdrive = 2; /* C: */
|
|
|
|
char *InDOS;
|
|
|
|
unsigned long disk_transfer_addr;
|
|
|
|
|
|
|
|
/* locals */
|
|
|
|
static int ctrl_c_flag = 0;
|
|
|
|
static int return_status = 0;
|
|
|
|
static int doserrno = 0;
|
|
|
|
static int memory_strategy = 0; /* first fit (we ignore this) */
|
|
|
|
|
|
|
|
|
|
|
|
static u_char upc_table[0x80] = {
|
|
|
|
0x80, 0x9a, 'E', 'A', 0x8e, 'A', 0x8f, 0x80,
|
|
|
|
'E', 'E', 'E', 'I', 'I', 'I', 0x8e, 0x8f,
|
|
|
|
0x90, 0x92, 0x92, 'O', 0x99, 'O', 'U', 'U',
|
|
|
|
'Y', 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
|
|
|
|
'A', 'I', 'O', 'U', 0xa5, 0xa5, 0xa6, 0xa7,
|
|
|
|
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
|
|
|
|
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
|
|
|
|
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
|
|
|
|
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
|
|
|
|
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
|
|
|
|
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
|
|
|
|
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
|
|
|
|
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
|
|
|
|
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
|
|
|
|
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
|
|
|
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
** utility functions
|
|
|
|
*/
|
|
|
|
|
|
|
|
static u_char
|
|
|
|
upcase(u_char c)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (islower(c))
|
|
|
|
return (toupper(c));
|
|
|
|
else if (c >= 0x80)
|
|
|
|
return (upc_table[c - 0x80]);
|
|
|
|
else
|
|
|
|
return (c);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
upcase_entry(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
u_char c;
|
|
|
|
|
|
|
|
R_AL = upcase(R_AL);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
** Handle the DOS drive info/free space/etc. calls.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_free(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
fsstat_t fs;
|
|
|
|
struct statfs fsstat;
|
|
|
|
char fspath[PATH_MAX];
|
|
|
|
int junk;
|
|
|
|
int spc,fclus,bps,nclus;
|
|
|
|
long nsec;
|
|
|
|
int error;
|
|
|
|
int dd_save;
|
|
|
|
int drive;
|
|
|
|
|
|
|
|
/* work out drive */
|
|
|
|
switch (R_AH) {
|
|
|
|
case 0x1c:
|
|
|
|
case 0x36:
|
|
|
|
drive = R_DL;
|
|
|
|
if (drive)
|
|
|
|
break;
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
case 0x1b:
|
|
|
|
drive = diskdrive;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
fatal("int21_free called on unknown function %x\n",R_AH);
|
|
|
|
}
|
|
|
|
|
|
|
|
error = get_space(drive, &fs);
|
|
|
|
if (error)
|
|
|
|
return(error);
|
|
|
|
|
|
|
|
R_AL = fs.sectors_cluster; /* sectors per cluster */
|
|
|
|
R_CX = fs.bytes_sector; /* bytes per sector */
|
|
|
|
R_DX = fs.total_clusters; /* total clusters */
|
|
|
|
|
|
|
|
switch (R_AH) {
|
|
|
|
case 0x1b:
|
|
|
|
case 0x1c:
|
|
|
|
BIOSDATA[0xb4] = 0xf0; /* "reserved" area, "other media" FAT ID */
|
|
|
|
R_DX = 0x40; /* BIOS data area */
|
|
|
|
R_BX = 0xb4;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x36:
|
|
|
|
R_BX = fs.avail_clusters; /* number of available clusters */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
pack_name(u_char *p, u_char *q)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 8; i > 0 && *p != ' '; i--)
|
|
|
|
*q++ = *p++;
|
|
|
|
p += i;
|
|
|
|
if (*p != ' ') {
|
|
|
|
*q++ = '.';
|
|
|
|
for (i = 3; i > 0 && *p != ' '; i--)
|
|
|
|
*q++ = *p++;
|
|
|
|
p += i;
|
|
|
|
}
|
|
|
|
*q = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dosdir_to_dta(dosdir_t *dosdir, find_block_t *dta)
|
|
|
|
{
|
|
|
|
u_char *p, *q;
|
|
|
|
|
|
|
|
dta->attr = dosdir->attr;
|
|
|
|
dta->time = dosdir->time;
|
|
|
|
dta->date = dosdir->date;
|
|
|
|
dta->size = dosdir->size;
|
|
|
|
pack_name(dosdir->name, dta->name);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* exported */
|
|
|
|
void
|
|
|
|
encode_dos_file_time(time_t t, u_short *dosdatep, u_short *dostimep)
|
|
|
|
{
|
|
|
|
struct tm tm;
|
|
|
|
|
|
|
|
tm = *localtime(&t);
|
|
|
|
*dostimep = (tm.tm_hour << 11) |
|
|
|
|
(tm.tm_min << 5) |
|
|
|
|
((tm.tm_sec / 2) << 0);
|
|
|
|
*dosdatep = ((tm.tm_year - 80) << 9) |
|
|
|
|
((tm.tm_mon + 1) << 5) |
|
|
|
|
(tm.tm_mday << 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
time_t
|
|
|
|
decode_dos_file_time(u_short dosdate, u_short dostime)
|
|
|
|
{
|
|
|
|
struct tm tm;
|
|
|
|
time_t then;
|
|
|
|
|
|
|
|
tm.tm_hour = (dostime >> 11) & 0x1f;
|
|
|
|
tm.tm_min = (dostime >> 5) & 0x3f;
|
|
|
|
tm.tm_sec = ((dostime >> 0) & 0x1f) * 2;
|
|
|
|
tm.tm_year = ((dosdate >> 9) & 0x7f) + 80;
|
|
|
|
tm.tm_mon = ((dosdate >> 5) & 0x0f) - 1;
|
|
|
|
tm.tm_mday = (dosdate >> 0) & 0x1f;
|
|
|
|
/* tm_wday and tm_yday are ignored. */
|
|
|
|
tm.tm_isdst = 0;
|
|
|
|
/* tm_gmtoff is ignored. */
|
|
|
|
then = mktime(&tm);
|
|
|
|
return (then);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
translate_filename(u_char *dname, u_char *uname, int *drivep)
|
|
|
|
{
|
|
|
|
u_char newpath[1024];
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (!strcasecmp(dname, "con")) {
|
|
|
|
*drivep = -1;
|
2000-12-09 09:35:55 +00:00
|
|
|
strcpy(uname, _PATH_TTY);
|
1997-08-09 01:43:15 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
1998-07-16 23:54:26 +00:00
|
|
|
/* XXX KLUDGE for EMS support w/o booting DOS */
|
|
|
|
/* Really need a better way to handle devices */
|
|
|
|
if (!strcasecmp(dname, "emmxxxx0")) {
|
|
|
|
*drivep = -1;
|
2000-12-09 09:35:55 +00:00
|
|
|
strcpy(uname, _PATH_DEVNULL);
|
1998-07-16 23:54:26 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
1997-08-09 01:43:15 +00:00
|
|
|
error = dos_makepath(dname, newpath);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
error = dos_to_real_path(newpath, uname, drivep);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static u_char magic[0x7e] = {
|
|
|
|
0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06,
|
|
|
|
0x06, 0x00, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06,
|
|
|
|
0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06,
|
|
|
|
0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06,
|
|
|
|
|
|
|
|
0x08, 0x0f, 0x06, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x04, 0x04, 0x0f, 0x0e, 0x06,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x04, 0x04, 0x04, 0x04, 0x04, 0x0f,
|
|
|
|
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x06, 0x06, 0x06, 0x0f, 0x0f,
|
|
|
|
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
|
|
|
|
0x0f, 0x0f, 0x0f, 0x0f, 0x04, 0x0f,
|
|
|
|
};
|
|
|
|
|
|
|
|
#define isvalid(x) ((magic[x] & 0x01) != 0)
|
|
|
|
#define issep(x) ((magic[x] & 0x02) == 0)
|
|
|
|
#define iswhite(x) ((magic[x] & 0x04) == 0)
|
|
|
|
|
|
|
|
static char *
|
|
|
|
skipwhite(char *p)
|
|
|
|
{
|
|
|
|
while (iswhite(*p))
|
|
|
|
++p;
|
|
|
|
return (p);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define get_drive_letter(x) ((x) - 0x40)
|
|
|
|
|
|
|
|
int
|
|
|
|
parse_filename(int flag, char *str, char *fcb, int *nb)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int ret = 0;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
p = str;
|
|
|
|
|
|
|
|
p = skipwhite(p);
|
|
|
|
if (flag & 1) {
|
|
|
|
if (issep(*p)) {
|
|
|
|
++p;
|
|
|
|
p = skipwhite(p);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (isvalid(*p) && p[1] == ':') {
|
|
|
|
*fcb++ = get_drive_letter(upcase(*p));
|
|
|
|
p += 2;
|
|
|
|
} else if (flag & 2) {
|
|
|
|
fcb++;
|
|
|
|
} else {
|
|
|
|
*fcb++ = 0; /* default drive */
|
|
|
|
}
|
|
|
|
|
|
|
|
i = 8;
|
|
|
|
if (isvalid(*p)) {
|
|
|
|
for (;;) {
|
|
|
|
if (!isvalid(*p)) {
|
|
|
|
for (; i > 0; i--)
|
|
|
|
*fcb++ = ' ';
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i > 0) {
|
|
|
|
switch (*p) {
|
|
|
|
case '*':
|
|
|
|
ret = 1;
|
|
|
|
for (; i > 0; i--)
|
|
|
|
*fcb++ = '?';
|
|
|
|
break;
|
|
|
|
case '?':
|
|
|
|
ret = 1;
|
|
|
|
default:
|
|
|
|
*fcb++ = upcase(*p);
|
|
|
|
i--;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
++p;
|
|
|
|
}
|
|
|
|
} else if (flag & 4) {
|
|
|
|
fcb += i;
|
|
|
|
} else {
|
|
|
|
for (; i > 0; i--)
|
|
|
|
*fcb++ = ' ';
|
|
|
|
}
|
|
|
|
|
|
|
|
i = 3;
|
|
|
|
if (*p == '.') {
|
|
|
|
++p;
|
|
|
|
for (;;) {
|
|
|
|
if (!isvalid(*p)) {
|
|
|
|
for (; i > 0; i--)
|
|
|
|
*fcb++ = ' ';
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i > 0) {
|
|
|
|
switch (*p) {
|
|
|
|
case '*':
|
|
|
|
ret = 1;
|
|
|
|
for (; i > 0; i--)
|
|
|
|
*fcb++ = '?';
|
|
|
|
break;
|
|
|
|
case '?':
|
|
|
|
ret = 1;
|
|
|
|
default:
|
|
|
|
*fcb++ = upcase(*p);
|
|
|
|
i--;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
++p;
|
|
|
|
}
|
|
|
|
} else if (flag & 8) {
|
|
|
|
fcb += i;
|
|
|
|
} else {
|
|
|
|
for (; i > 0; i--)
|
|
|
|
*fcb++ = ' ';
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 4; i > 0; i--)
|
|
|
|
*fcb++ = 0; /* filler */
|
|
|
|
|
|
|
|
*nb = p - str;
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
** int21 functions
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:00
|
|
|
|
**
|
|
|
|
** terminate
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_00(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
done(REGS,0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:01
|
|
|
|
**
|
|
|
|
** read character with echo
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_01(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
|
|
|
|
if ((n = tty_read(®S->sc, TTYF_BLOCKALL)) >= 0)
|
|
|
|
R_AL = n;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:02
|
|
|
|
**
|
|
|
|
** write char to stdout
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_02(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
tty_write(R_DL, TTYF_REDIRECT);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:06
|
|
|
|
**
|
|
|
|
** direct console I/O
|
|
|
|
**
|
|
|
|
** (dl) is output char unless 0xff, when we read instead
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_06(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
|
|
|
|
/* XXX - should be able to read a file */
|
|
|
|
if (R_DL == 0xff) {
|
|
|
|
n = tty_read(®S->sc, TTYF_ECHO|TTYF_REDIRECT);
|
|
|
|
if (n < 0) {
|
|
|
|
R_FLAGS |= PSL_Z; /* nothing available */
|
|
|
|
R_AL = 0;
|
|
|
|
} else {
|
|
|
|
R_AL = n; /* got character */
|
|
|
|
R_FLAGS &= ~PSL_Z;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* write and return char in %al */
|
|
|
|
tty_write(R_DL, TTYF_REDIRECT);
|
|
|
|
R_AL = R_DL;
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:07
|
|
|
|
**
|
|
|
|
** direct console input with no echo
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_07(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_AL = tty_read(®S->sc, TTYF_BLOCK|TTYF_REDIRECT) & 0xff;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:08
|
|
|
|
**
|
|
|
|
** character input with no echo
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_08(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
|
|
|
|
if ((n = tty_read(®S->sc, TTYF_BLOCK|TTYF_CTRL|TTYF_REDIRECT)) >= 0)
|
|
|
|
R_AL = n;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:09
|
|
|
|
**
|
|
|
|
** write string to standard out.
|
|
|
|
**
|
|
|
|
** We're a little paranoid here; if the string is very long, truncate it.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_09(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
char *addr;
|
|
|
|
int len;
|
|
|
|
|
|
|
|
/* pointer to string */
|
1999-09-29 20:09:19 +00:00
|
|
|
addr = (char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
/* walk string looking for terminator or overlength */
|
|
|
|
for (len = 0; len < 10000; len++, addr++) {
|
|
|
|
if (*addr == '$')
|
|
|
|
break;
|
|
|
|
tty_write(*addr, TTYF_REDIRECT);
|
|
|
|
}
|
|
|
|
R_AL = 0x24;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:0a
|
|
|
|
**
|
|
|
|
** buffered input
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_0a(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
unsigned char *addr;
|
|
|
|
int nbytes,avail;
|
|
|
|
int n;
|
|
|
|
|
|
|
|
/* pointer to buffer */
|
2001-05-22 11:29:31 +00:00
|
|
|
addr = (unsigned char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
/* capacity of buffer */
|
|
|
|
avail = addr[0];
|
|
|
|
if (avail == 0) /* no space */
|
|
|
|
return(0);
|
|
|
|
nbytes = 0; /* read nothing yet */
|
|
|
|
|
|
|
|
/* read loop */
|
|
|
|
while (1) {
|
|
|
|
n = tty_read(®S->sc, TTYF_BLOCK|TTYF_CTRL|TTYF_REDIRECT);
|
|
|
|
if (n < 0) /* end of input */
|
|
|
|
n = '\r'; /* make like CR */
|
|
|
|
|
|
|
|
switch (n) {
|
|
|
|
case '\r': /* done */
|
|
|
|
addr[1] = nbytes;
|
|
|
|
addr[nbytes+2] = '\r';
|
|
|
|
addr[nbytes+3] = '\0'; /* XXX is this necessary? */
|
|
|
|
return (0);
|
|
|
|
case '\n': /* ignore */
|
|
|
|
case '\0':
|
|
|
|
break;
|
|
|
|
case '\b': /* backspace */
|
|
|
|
if (nbytes > 0) {
|
|
|
|
--nbytes;
|
|
|
|
tty_write('\b', TTYF_REDIRECT);
|
|
|
|
if (addr[nbytes+2] < ' ')
|
|
|
|
tty_write('\b', TTYF_REDIRECT);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (nbytes >= (avail-2)) { /* buffer full */
|
|
|
|
tty_write('\007', TTYF_REDIRECT);
|
|
|
|
} else { /* add to end */
|
|
|
|
addr[(nbytes++) +2] = n;
|
|
|
|
if (n != '\t' && n < ' ') {
|
|
|
|
tty_write('^', TTYF_REDIRECT);
|
|
|
|
tty_write(n + '@', TTYF_REDIRECT);
|
|
|
|
} else
|
|
|
|
tty_write(n, TTYF_REDIRECT);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:0b
|
|
|
|
**
|
|
|
|
** get stdin status
|
|
|
|
**
|
|
|
|
** This is a favorite for camping on, so we do some poll-counting
|
|
|
|
** here as well.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_0b(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
|
|
|
|
/* XXX this is pretty bogus, actually */
|
|
|
|
if (!xmode) {
|
|
|
|
R_AL = 0xff; /* no X mode, always claim data available */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
/* XXX tty_peek is broken */
|
1999-09-29 20:09:19 +00:00
|
|
|
n = tty_peek(REGS, poll_cnt ? 0 : TTYF_POLL) ? 0xff : 0;
|
1997-08-09 01:43:15 +00:00
|
|
|
if (n < 0) /* control-break */
|
|
|
|
return (0);
|
|
|
|
R_AL = n; /* will be 0 or 0xff */
|
|
|
|
if (poll_cnt)
|
|
|
|
--poll_cnt;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:0c
|
|
|
|
**
|
|
|
|
** flush stdin and read using other function
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_0c(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
if (xmode) /* XXX should always flush! */
|
|
|
|
tty_flush();
|
|
|
|
|
|
|
|
switch(R_AL) { /* which subfunction? */
|
|
|
|
case 0x01:
|
|
|
|
return(int21_01(REGS));
|
|
|
|
case 0x06:
|
|
|
|
return(int21_06(REGS));
|
|
|
|
case 0x07:
|
|
|
|
return(int21_07(REGS));
|
|
|
|
case 0x08:
|
|
|
|
return(int21_08(REGS));
|
|
|
|
case 0x0a:
|
|
|
|
return(int21_0a(REGS));
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:0e
|
|
|
|
**
|
|
|
|
** select default drive
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_0e(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
diskdrive = R_DL; /* XXX rangecheck? */
|
|
|
|
R_AL = ndisks + 2; /* report actual limit */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:19
|
|
|
|
**
|
|
|
|
** get default drive
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_19(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_AL = diskdrive;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:1a
|
|
|
|
**
|
|
|
|
** set DTA
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_1a(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_FILE_OPS, "set dta to %x:%x\n", R_DS, R_DX);
|
1999-09-29 20:09:19 +00:00
|
|
|
disk_transfer_addr = MAKEVEC(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
1998-07-17 00:18:52 +00:00
|
|
|
/*
|
|
|
|
** 21:23
|
|
|
|
**
|
|
|
|
** Get file size for fcb
|
|
|
|
** DS:DX -> unopened FCB, no wildcards.
|
|
|
|
** pcb random record field filled in with number of records, rounded up.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_23(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_HALF, "Returning failure from get file size for fcb 21:23\n");
|
|
|
|
R_AL = 0xff;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
1997-08-09 01:43:15 +00:00
|
|
|
/*
|
|
|
|
** 21:25
|
|
|
|
**
|
|
|
|
** set interrupt vector
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_25(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_MEMORY, "%02x -> %04x:%04x\n", R_AL, R_DS, R_DX);
|
1999-09-29 20:09:19 +00:00
|
|
|
ivec[R_AL] = MAKEVEC(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:26
|
|
|
|
**
|
|
|
|
** Create PSP
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_26(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
unsigned char *addr;
|
|
|
|
|
|
|
|
/* address of new PSP */
|
|
|
|
addr = (unsigned char *)MAKEPTR(R_DX, 0);
|
|
|
|
|
|
|
|
/* copy this process' PSP - XXX needs some work 8( */
|
|
|
|
memcpy (addr, dosmem, 256);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:2a
|
|
|
|
**
|
|
|
|
** Get date
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_2a(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
struct timeval tv;
|
|
|
|
struct timezone tz;
|
|
|
|
struct tm tm;
|
|
|
|
time_t now;
|
|
|
|
|
|
|
|
gettimeofday(&tv, &tz); /* get time and apply DOS offset */
|
|
|
|
now = tv.tv_sec + delta_clock;
|
|
|
|
|
|
|
|
tm = *localtime(&now); /* deconstruct and timezoneify */
|
|
|
|
R_CX = tm.tm_year + 1900;
|
|
|
|
R_DH = tm.tm_mon + 1;
|
|
|
|
R_DL = tm.tm_mday;
|
|
|
|
R_AL = tm.tm_wday;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:2b
|
|
|
|
**
|
|
|
|
** set date
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_2b(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
struct timeval tv;
|
|
|
|
struct timezone tz;
|
|
|
|
struct tm tm;
|
|
|
|
time_t now;
|
|
|
|
|
|
|
|
gettimeofday(&tv, &tz); /* get time and apply DOS offset */
|
|
|
|
now = tv.tv_sec + delta_clock;
|
|
|
|
tm = *localtime(&now);
|
|
|
|
|
|
|
|
tm.tm_year = R_CX - 1900;
|
|
|
|
tm.tm_mon = R_DH - 1;
|
|
|
|
tm.tm_mday = R_DL;
|
|
|
|
tm.tm_wday = R_AL;
|
|
|
|
|
|
|
|
now = mktime(&tm);
|
|
|
|
if (now == -1)
|
|
|
|
return (DATA_INVALID);
|
|
|
|
|
|
|
|
delta_clock = now - tv.tv_sec; /* compute new offset? */
|
|
|
|
R_AL = 0;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:2c
|
|
|
|
**
|
|
|
|
** Get time
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_2c(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
struct timeval tv;
|
|
|
|
struct timezone tz;
|
|
|
|
struct tm tm;
|
|
|
|
time_t now;
|
|
|
|
|
|
|
|
gettimeofday(&tv, &tz);
|
|
|
|
now = tv.tv_sec + delta_clock;
|
|
|
|
tm = *localtime(&now);
|
|
|
|
|
|
|
|
R_CH = tm.tm_hour;
|
|
|
|
R_CL = tm.tm_min;
|
|
|
|
R_DH = tm.tm_sec;
|
|
|
|
R_DL = tv.tv_usec / 10000;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:2d
|
|
|
|
**
|
|
|
|
** Set time
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_2d(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
struct timeval tv;
|
|
|
|
struct timezone tz;
|
|
|
|
struct tm tm;
|
|
|
|
time_t now;
|
|
|
|
|
|
|
|
gettimeofday(&tv, &tz);
|
|
|
|
now = tv.tv_sec + delta_clock;
|
|
|
|
tm = *localtime(&now);
|
|
|
|
|
|
|
|
tm.tm_hour = R_CH;
|
|
|
|
tm.tm_min = R_CL;
|
|
|
|
tm.tm_sec = R_DH;
|
|
|
|
tv.tv_usec = R_DL * 10000;
|
|
|
|
|
|
|
|
now = mktime(&tm);
|
|
|
|
if (now == -1)
|
|
|
|
return (DATA_INVALID);
|
|
|
|
|
|
|
|
delta_clock = now - tv.tv_sec;
|
|
|
|
R_AL = 0;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:2f
|
|
|
|
**
|
|
|
|
** get DTA
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_2f(regcontext_t *REGS)
|
|
|
|
{
|
1999-09-29 20:09:19 +00:00
|
|
|
PUTVEC(R_ES, R_BX, disk_transfer_addr);
|
1997-08-09 01:43:15 +00:00
|
|
|
debug(D_FILE_OPS, "get dta at %x:%x\n", R_ES, R_BX);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:30
|
|
|
|
**
|
|
|
|
** get DOS version number.
|
|
|
|
**
|
|
|
|
** XXX begging for a rewrite
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_30(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int v;
|
|
|
|
|
|
|
|
char *cmd = (char *)MAKEPTR(get_env(), 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* retch. I think this skips the environment and looks for the name
|
|
|
|
* of the current command.
|
|
|
|
*/
|
|
|
|
do {
|
|
|
|
while (*cmd)
|
|
|
|
++cmd;
|
|
|
|
} while (*++cmd);
|
|
|
|
++cmd;
|
|
|
|
cmd += *(short *)cmd + 1;
|
|
|
|
while (cmd[-1] && cmd[-1] != '\\' && cmd[-1] != ':')
|
|
|
|
--cmd;
|
|
|
|
|
|
|
|
/* get the version we're pretending to be for this sucker */
|
|
|
|
v = getver(cmd);
|
|
|
|
R_AL = (v / 100) & 0xff;
|
|
|
|
R_AH = v % 100;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:33:05
|
|
|
|
**
|
|
|
|
** Get boot drive
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_33_5(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_DL = 3; /* always booted from C */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:33:06
|
|
|
|
**
|
|
|
|
** get true DOS version
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_33_6(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int v;
|
|
|
|
|
|
|
|
v = getver(NULL);
|
|
|
|
R_BL = (v / 100) & 0xff;
|
|
|
|
R_BH = v % 100;
|
|
|
|
R_DH = 0;
|
|
|
|
R_DL = 0;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:33
|
|
|
|
**
|
|
|
|
** extended break checking
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_33(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int ftemp;
|
|
|
|
|
|
|
|
switch (R_AL) {
|
|
|
|
case 0x00:
|
|
|
|
R_DL = ctrl_c_flag;
|
|
|
|
break;
|
|
|
|
case 0x01:
|
|
|
|
ctrl_c_flag = R_DL;
|
|
|
|
break;
|
|
|
|
case 0x02:
|
|
|
|
ftemp = ctrl_c_flag;
|
|
|
|
ctrl_c_flag = R_DL;
|
|
|
|
R_DL = ftemp;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
unknown_int3(0x21, 0x33, R_AL, REGS);
|
|
|
|
return(FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:34
|
|
|
|
**
|
|
|
|
** Get address of InDos flag
|
|
|
|
**
|
|
|
|
** XXX check interrupt list WRT location of critical error flag too.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_34(regcontext_t *REGS)
|
|
|
|
{
|
1999-09-29 20:09:19 +00:00
|
|
|
PUTVEC(R_ES, R_BX, (u_long)InDOS);
|
1997-08-09 01:43:15 +00:00
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:35
|
|
|
|
**
|
|
|
|
** get interrupt vector
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_35(regcontext_t *REGS)
|
|
|
|
{
|
1999-09-29 20:09:19 +00:00
|
|
|
PUTVEC(R_ES, R_BX, ivec[R_AL]);
|
1997-08-09 01:43:15 +00:00
|
|
|
debug(D_MEMORY, "%02x <- %04x:%04x\n", R_AL, R_ES, R_BX);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:37
|
|
|
|
**
|
|
|
|
** switch character manipulation
|
|
|
|
**
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_37(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
switch (R_AL) {
|
|
|
|
case 0: /* get switch character */
|
|
|
|
R_DL = '/';
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 1: /* set switch character (normally /) */
|
|
|
|
/* ignored by most versions of DOS */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
unknown_int3(0x21, 0x37, R_AL, REGS);
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:38
|
|
|
|
**
|
|
|
|
** country code information
|
|
|
|
**
|
|
|
|
** XXX internat guru?
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_38(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
char *addr;
|
|
|
|
|
|
|
|
if (R_DX == 0xffff) {
|
|
|
|
debug(D_HALF, "warning: set country code ignored");
|
|
|
|
return(0);
|
|
|
|
}
|
1999-09-29 20:09:19 +00:00
|
|
|
addr = (char *)MAKEPTR(R_DS, R_DX);
|
|
|
|
PUTVEC(countryinfo.ciCaseMapSegment, countryinfo.ciCaseMapOffset,
|
1997-08-09 01:43:15 +00:00
|
|
|
upcase_vector);
|
|
|
|
memcpy(addr, &countryinfo, sizeof(countryinfo));
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:39
|
|
|
|
** 21:3a
|
|
|
|
** 21:41
|
|
|
|
** 21:56
|
|
|
|
**
|
|
|
|
** mkdir, rmdir, unlink, rename
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_dirfn(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
char fname[PATH_MAX],tname[PATH_MAX];
|
|
|
|
int drive;
|
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
error = translate_filename((u_char *)MAKEPTR(R_DS, R_DX), fname, &drive);
|
1997-08-09 01:43:15 +00:00
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
if (dos_readonly(drive))
|
|
|
|
return (WRITE_PROT_DISK);
|
|
|
|
|
|
|
|
switch(R_AH) {
|
|
|
|
case 0x39:
|
|
|
|
debug(D_FILE_OPS, "mkdir(%s)\n", fname);
|
|
|
|
error = mkdir(fname, 0777);
|
|
|
|
break;
|
|
|
|
case 0x3a:
|
|
|
|
debug(D_FILE_OPS, "rmdir(%s)\n", fname);
|
|
|
|
error = rmdir(fname);
|
|
|
|
break;
|
|
|
|
case 0x41:
|
|
|
|
debug(D_FILE_OPS, "unlink(%s)\n", fname);
|
|
|
|
error = unlink(fname);
|
|
|
|
break;
|
|
|
|
case 0x56: /* rename - some extra work */
|
1999-09-29 20:09:19 +00:00
|
|
|
error = translate_filename((u_char *)MAKEPTR(R_ES, R_DI), tname, &drive);
|
1997-08-09 01:43:15 +00:00
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "rename(%s, %s)\n", fname, tname);
|
|
|
|
error = rename(fname, tname);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
fatal("call to int21_dirfn for unknown function %x\n",R_AH);
|
|
|
|
}
|
|
|
|
if (error < 0) {
|
|
|
|
switch (errno) {
|
|
|
|
case ENOTDIR:
|
|
|
|
case ENOENT:
|
|
|
|
return (PATH_NOT_FOUND);
|
|
|
|
case EXDEV:
|
|
|
|
return (NOT_SAME_DEV);
|
|
|
|
default:
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:3b
|
|
|
|
**
|
|
|
|
** chdir
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_3b(regcontext_t *REGS)
|
|
|
|
{
|
1999-09-29 20:09:19 +00:00
|
|
|
debug(D_FILE_OPS, "chdir(%s)\n",(u_char *)MAKEPTR(R_DS, R_DX));
|
|
|
|
return(dos_setcwd((u_char *)MAKEPTR(R_DS, R_DX)));
|
1997-08-09 01:43:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:3c
|
|
|
|
** 21:5b
|
|
|
|
** 21:6c
|
|
|
|
**
|
|
|
|
** open, creat, creat new, multipurpose creat
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_open(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
char fname[PATH_MAX];
|
|
|
|
struct stat sb;
|
|
|
|
int mode,action,status;
|
|
|
|
char *pname;
|
|
|
|
int drive;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
switch(R_AH) {
|
|
|
|
case 0x3c: /* creat */
|
1999-09-29 20:09:19 +00:00
|
|
|
pname = (char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
action = 0x12; /* create/truncate regardless */
|
|
|
|
mode = O_RDWR;
|
|
|
|
debug(D_FILE_OPS, "creat");
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x3d: /* open */
|
1999-09-29 20:09:19 +00:00
|
|
|
pname = (char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
action = 0x01; /* fail if not exist, open if exists */
|
|
|
|
switch (R_AL & 3) {
|
|
|
|
case 0:
|
|
|
|
mode = O_RDONLY;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
mode = O_WRONLY;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
mode = O_RDWR;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
debug(D_FILE_OPS, "open");
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x5b: /* creat new */
|
1999-09-29 20:09:19 +00:00
|
|
|
pname = (char *)MAKEPTR(R_DS, R_DL);
|
1997-08-09 01:43:15 +00:00
|
|
|
action = 0x10; /* create if not exist, fail if exists */
|
|
|
|
mode = O_RDWR;
|
|
|
|
debug(D_FILE_OPS, "creat_new");
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x6c: /* multipurpose */
|
1999-09-29 20:09:19 +00:00
|
|
|
pname = (char *)MAKEPTR(R_DS, R_SI);
|
1997-08-09 01:43:15 +00:00
|
|
|
action = R_DX;
|
|
|
|
switch (R_BL & 3) {
|
|
|
|
case 0:
|
|
|
|
mode = O_RDONLY;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
mode = O_WRONLY;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
mode = O_RDWR;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
debug(D_FILE_OPS, "mopen");
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
fatal("called int21_creat for unknown function %x\n",R_AH);
|
|
|
|
}
|
|
|
|
if (action & 0x02) /* replace/open mode */
|
|
|
|
mode |= O_TRUNC;
|
|
|
|
|
|
|
|
/* consider proposed name */
|
|
|
|
error = translate_filename(pname, fname, &drive);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "(%s)\n", fname);
|
|
|
|
|
|
|
|
if (dos_readonly(drive) && (mode != O_RDONLY))
|
|
|
|
return (WRITE_PROT_DISK);
|
|
|
|
|
|
|
|
if (ustat(fname, &sb) < 0) { /* file does not exist */
|
|
|
|
if (action & 0x10) { /* create? */
|
|
|
|
sb.st_ino = 0;
|
|
|
|
mode |= O_CREAT; /* have to create as we go */
|
|
|
|
status = 0x02; /* file created */
|
|
|
|
} else {
|
|
|
|
return(FILE_NOT_FOUND);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if (S_ISDIR(sb.st_mode))
|
|
|
|
return(ACCESS_DENIED);
|
|
|
|
if (action & 0x03) { /* exists, work with it */
|
|
|
|
if (action & 0x02) {
|
|
|
|
if (!S_ISREG(sb.st_mode)) { /* only allowed for files */
|
|
|
|
debug(D_FILE_OPS,"attempt to truncate non-regular file\n");
|
|
|
|
return(ACCESS_DENIED);
|
|
|
|
}
|
|
|
|
status = 0x03; /* we're going to truncate it */
|
|
|
|
} else {
|
|
|
|
status = 0x01; /* just open it */
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return(FILE_ALREADY_EXISTS); /* exists, fail */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((fd = open(fname, mode, from_dos_attr(R_CX))) < 0) {
|
|
|
|
debug(D_FILE_OPS,"failed to open %s : %s\n",fname,strerror(errno));
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (R_AH == 0x6c) /* need to return status too */
|
|
|
|
R_CX = status;
|
|
|
|
R_AX = fd; /* return fd */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:3e
|
|
|
|
**
|
|
|
|
** close
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_3e(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_FILE_OPS, "close(%d)\n", R_BX);
|
|
|
|
|
|
|
|
if (R_BX == fileno(debugf)) {
|
|
|
|
printf("attempt to close debugging fd\n");
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (close(R_BX) < 0)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:3f
|
|
|
|
**
|
|
|
|
** read
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_3f(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
char *addr;
|
|
|
|
int nbytes,n;
|
|
|
|
int avail;
|
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
addr = (char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
debug(D_FILE_OPS, "read(%d, %d)\n", R_BX, R_CX);
|
|
|
|
|
|
|
|
if (R_BX == 0) {
|
|
|
|
if (redirect0) {
|
|
|
|
n = read (R_BX, addr, R_CX);
|
|
|
|
} else {
|
|
|
|
n = 0;
|
|
|
|
while (n < R_CX) {
|
|
|
|
avail = tty_read(REGS, TTYF_BLOCK|TTYF_CTRL|TTYF_ECHONL);
|
|
|
|
if (avail < 0)
|
|
|
|
return (0);
|
|
|
|
if ((addr[n++] = avail) == '\r')
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
n = read (R_BX, addr, R_CX);
|
|
|
|
}
|
|
|
|
if (n < 0)
|
|
|
|
return (READ_FAULT);
|
|
|
|
|
|
|
|
R_AX = n;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:40
|
|
|
|
**
|
|
|
|
** write
|
|
|
|
*/
|
2001-05-22 11:31:08 +00:00
|
|
|
static int
|
|
|
|
write_or_truncate(int fd, char *addr, int len)
|
|
|
|
{
|
|
|
|
off_t offset;
|
|
|
|
|
|
|
|
if (len == 0) {
|
|
|
|
offset = lseek(fd, 0, SEEK_CUR);
|
|
|
|
if (offset < 0)
|
|
|
|
return -1;
|
|
|
|
else
|
|
|
|
return ftruncate(fd, offset);
|
|
|
|
} else {
|
|
|
|
return write(fd, addr, len);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1997-08-09 01:43:15 +00:00
|
|
|
static int
|
|
|
|
int21_40(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
char *addr;
|
|
|
|
int nbytes,n;
|
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
addr = (char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
nbytes = R_CX;
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "write(%d, %d)\n", R_BX, nbytes);
|
|
|
|
|
|
|
|
switch (R_BX) {
|
|
|
|
case 0:
|
|
|
|
if (redirect0) {
|
2001-05-22 11:31:08 +00:00
|
|
|
n = write_or_truncate(R_BX, addr, nbytes);
|
1997-08-09 01:43:15 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
n = nbytes;
|
|
|
|
while (nbytes-- > 0)
|
|
|
|
tty_write(*addr++, -1);
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
if (redirect1) {
|
2001-05-22 11:31:08 +00:00
|
|
|
n = write_or_truncate(R_BX, addr, nbytes);
|
1997-08-09 01:43:15 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
n = nbytes;
|
|
|
|
while (nbytes-- > 0)
|
|
|
|
tty_write(*addr++, -1);
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
if (redirect2) {
|
2001-05-22 11:31:08 +00:00
|
|
|
n = write_or_truncate(R_BX, addr, nbytes);
|
1997-08-09 01:43:15 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
n = nbytes;
|
|
|
|
while (nbytes-- > 0)
|
|
|
|
tty_write(*addr++, -1);
|
|
|
|
break;
|
|
|
|
default:
|
2001-05-22 11:31:08 +00:00
|
|
|
n = write_or_truncate(R_BX, addr, nbytes);
|
1997-08-09 01:43:15 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (n < 0)
|
|
|
|
return (WRITE_FAULT);
|
|
|
|
|
|
|
|
R_AX = n;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:42
|
|
|
|
**
|
|
|
|
** seek
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_42(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int whence;
|
|
|
|
off_t offset;
|
|
|
|
|
1998-07-02 05:12:53 +00:00
|
|
|
offset = (off_t) ((int) (R_CX << 16) + R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
switch (R_AL) {
|
|
|
|
case 0:
|
|
|
|
whence = SEEK_SET;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
whence = SEEK_CUR;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
whence = SEEK_END;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "seek(%d, 0x%qx, %d)\n", R_BX, offset, whence);
|
|
|
|
|
|
|
|
if ((offset = lseek(R_BX, offset, whence)) < 0) {
|
|
|
|
if (errno == EBADF)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
else
|
|
|
|
return (SEEK_ERROR);
|
|
|
|
}
|
|
|
|
|
|
|
|
R_DX = (offset >> 16) & 0xffff;
|
|
|
|
R_AX = offset & 0xffff;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:43
|
|
|
|
**
|
|
|
|
** get/set attributes
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_43(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
char fname[PATH_MAX];
|
|
|
|
struct stat sb;
|
|
|
|
int mode;
|
|
|
|
int drive;
|
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
error = translate_filename((u_char *)MAKEPTR(R_DS, R_DX), fname, &drive);
|
1997-08-09 01:43:15 +00:00
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "get/set attributes: %s, cx=%x, al=%d\n",
|
|
|
|
fname, R_CX, R_AL);
|
|
|
|
|
|
|
|
if (stat(fname, &sb) < 0) {
|
|
|
|
debug(D_FILE_OPS, "stat failed for %s\n", fname);
|
|
|
|
return (FILE_NOT_FOUND);
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (R_AL) {
|
|
|
|
case 0: /* get attributes */
|
|
|
|
mode = 0;
|
|
|
|
if (dos_readonly(drive) || access(fname, W_OK))
|
|
|
|
mode |= 0x01;
|
|
|
|
if (S_ISDIR(sb.st_mode))
|
|
|
|
mode |= 0x10;
|
|
|
|
R_CX = mode;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 1: /* set attributes - XXX ignored */
|
|
|
|
if (R_CX & 0x18)
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:44:0
|
|
|
|
**
|
|
|
|
** ioctl - get device info
|
|
|
|
**
|
|
|
|
** XXX it would be nice to detect EOF.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_44_0(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_FILE_OPS, "ioctl get %d\n", R_BX);
|
|
|
|
|
|
|
|
switch (R_BX) {
|
|
|
|
case 0:
|
|
|
|
R_DX = 0x80 | 0x01; /* is device, is standard output */
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
R_DX = 0x80 | 0x02; /* is device, is standard input */
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
R_DX = 0x80; /* is device */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (isatty (R_BX))
|
|
|
|
R_DX = 0x80; /* is a device */
|
|
|
|
else
|
|
|
|
R_DX = 0; /* is a file */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:44:01
|
|
|
|
**
|
|
|
|
** ioctl - set device info
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_44_1(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_FILE_OPS, "ioctl set device info %d flags %x (ignored)\n",
|
|
|
|
R_BX, R_DX);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
1998-07-17 00:18:52 +00:00
|
|
|
/*
|
|
|
|
** 21:44:7
|
|
|
|
**
|
|
|
|
** Get output status
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_44_7(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
/* XXX Should really check to see if BX is open or not */
|
|
|
|
R_AX = 0xFF;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
1997-08-09 01:43:15 +00:00
|
|
|
/*
|
|
|
|
** 21:44:8
|
|
|
|
**
|
|
|
|
** test for removable block device
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_44_8(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_AX = 1; /* fixed */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:44:0
|
|
|
|
**
|
|
|
|
** test for remote device (disallow direct I/O)
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_44_9(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_DX = 0x1200; /* disk is remote, direct I/O not allowed */
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:45
|
|
|
|
**
|
|
|
|
** dup
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_45(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int nfd;
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "dup(%d)\n", R_BX);
|
|
|
|
|
|
|
|
if ((nfd = dup(R_BX)) < 0) {
|
|
|
|
if (errno == EBADF)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
else
|
|
|
|
return (TOO_MANY_OPEN_FILES);
|
|
|
|
}
|
|
|
|
R_AX = nfd;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:46
|
|
|
|
**
|
|
|
|
** dup2
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_46(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_FILE_OPS, "dup2(%d, %d)\n", R_BX, R_CX);
|
|
|
|
|
|
|
|
if (dup2(R_BX, R_CX) < 0) {
|
|
|
|
if (errno == EMFILE)
|
|
|
|
return (TOO_MANY_OPEN_FILES);
|
|
|
|
else
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:47
|
|
|
|
**
|
|
|
|
** getcwd
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_47(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int n,nbytes;
|
|
|
|
char *p,*addr;
|
|
|
|
|
|
|
|
n = R_DL;
|
|
|
|
if (!n--)
|
|
|
|
n = diskdrive;
|
|
|
|
|
|
|
|
p = (char *)dos_getcwd(n) + 1;
|
1999-09-29 20:09:19 +00:00
|
|
|
addr = (char *)MAKEPTR(R_DS, R_SI);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
nbytes = strlen(p);
|
|
|
|
if (nbytes > 63)
|
|
|
|
nbytes = 63;
|
|
|
|
|
|
|
|
memcpy(addr, p, nbytes);
|
|
|
|
addr[nbytes] = 0;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:48
|
|
|
|
**
|
|
|
|
** allocate memory
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_48(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int memseg,avail;
|
|
|
|
|
|
|
|
memseg = mem_alloc(R_BX, pspseg, &avail);
|
|
|
|
|
|
|
|
if (memseg == 0L) {
|
|
|
|
R_BX = avail;
|
|
|
|
return (INSUF_MEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
R_AX = memseg;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:49
|
|
|
|
**
|
|
|
|
** free memory
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_49(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
if (mem_adjust(R_ES, 0, NULL) < 0)
|
|
|
|
return (MEM_BLK_ADDR_IVALID);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:4a
|
|
|
|
**
|
|
|
|
** resize memory block
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_4a(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int n,avail;
|
|
|
|
|
|
|
|
if ((n = mem_adjust(R_ES, R_BX, &avail)) < 0) {
|
|
|
|
R_BX = avail;
|
|
|
|
if (n == -1)
|
|
|
|
return (INSUF_MEM);
|
|
|
|
else
|
|
|
|
return (MEM_BLK_ADDR_IVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:4b
|
|
|
|
**
|
|
|
|
** exec
|
|
|
|
**
|
|
|
|
** XXX verify!
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_4b(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
char *fname[PATH_MAX];
|
|
|
|
u_short *param;
|
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
debug(D_EXEC, "exec(%s)\n",(u_char *)MAKEPTR(R_DS, R_DX));
|
1997-08-09 01:43:15 +00:00
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
if ((fd = open_prog((u_char *)MAKEPTR(R_DS, R_DX))) < 0) {
|
1997-08-09 01:43:15 +00:00
|
|
|
debug(D_EXEC, "%s: command not found\n", fname);
|
|
|
|
return (FILE_NOT_FOUND);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* child */
|
1999-09-29 20:09:19 +00:00
|
|
|
param = (u_short *)MAKEPTR(R_ES, R_BX);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
switch (R_AL) {
|
|
|
|
case 0x00: /* load and execute */
|
|
|
|
exec_command(REGS, 1, fd, cmdname, param);
|
|
|
|
close(fd);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x01: /* just load */
|
|
|
|
exec_command(REGS, 0, fd, cmdname, param);
|
|
|
|
close(fd);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x03: /* load overlay */
|
|
|
|
load_overlay(fd, param[0], param[1]);
|
|
|
|
close(fd);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
unknown_int3(0x21, 0x4b, R_AL, REGS);
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:4c
|
|
|
|
**
|
|
|
|
** return with code
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_4c(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
return_status = R_AL;
|
|
|
|
done(REGS, R_AL);
|
2001-05-22 11:28:28 +00:00
|
|
|
return 0;
|
1997-08-09 01:43:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:4d
|
|
|
|
**
|
|
|
|
** get return code of child
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_4d(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_AX = return_status;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:4e
|
|
|
|
** 21:4f
|
|
|
|
**
|
|
|
|
** find first, find next
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_find(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
find_block_t *dta;
|
|
|
|
dosdir_t dosdir;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
dta = (find_block_t *)VECPTR(disk_transfer_addr);
|
|
|
|
|
|
|
|
switch (R_AH) {
|
|
|
|
case 0x4e: /* find first */
|
1999-09-29 20:09:19 +00:00
|
|
|
error = find_first((u_char *)MAKEPTR(R_DS, R_DX), R_CX, &dosdir, dta);
|
1997-08-09 01:43:15 +00:00
|
|
|
break;
|
|
|
|
case 0x4f:
|
|
|
|
error = find_next(&dosdir, dta);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
fatal("called int21_find for unknown function %x\n",R_AH);
|
|
|
|
}
|
|
|
|
if (!error) {
|
|
|
|
dosdir_to_dta(&dosdir, dta);
|
|
|
|
R_AX = 0;
|
|
|
|
}
|
|
|
|
return(error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:50
|
|
|
|
**
|
|
|
|
** set PSP
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_50(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
pspseg = R_BX;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:57:00
|
|
|
|
**
|
|
|
|
** get mtime for handle
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_57_0(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
struct stat sb;
|
|
|
|
u_short date,time;
|
|
|
|
|
|
|
|
if (fstat(R_BX, &sb) < 0)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
encode_dos_file_time(sb.st_mtime, &date, &time);
|
|
|
|
R_CX = time;
|
|
|
|
R_DX = date;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:57:01
|
|
|
|
**
|
|
|
|
** set mtime for handle
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_57_1(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
#ifdef __NetBSD__ /* XXX need futimes() */
|
|
|
|
struct stat sb;
|
|
|
|
struct timeval tv[2];
|
|
|
|
u_short date, time;
|
|
|
|
|
|
|
|
time = R_CX;
|
|
|
|
date = R_DX;
|
|
|
|
tv[0].tv_sec = tv[1].tv_sec = decode_dos_file_time(date, time);
|
|
|
|
tv[0].tv_usec = tv[1].tv_usec = 0;
|
|
|
|
if (futimes(R_BX, tv) < 0)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:58
|
|
|
|
**
|
|
|
|
** get/set memory strategy
|
|
|
|
** get/set UMB link state
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_58(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
switch (R_AL) {
|
|
|
|
case 0x00: /* get memory strategy */
|
|
|
|
R_AX = memory_strategy;
|
|
|
|
break;
|
|
|
|
case 0x01: /* set memory strategy */
|
|
|
|
memory_strategy = R_BL;
|
|
|
|
if (memory_strategy > 2) /* higher make no sense without UMBs */
|
|
|
|
memory_strategy = 2;
|
|
|
|
break;
|
|
|
|
case 0x02: /* get UMB link state */
|
|
|
|
R_AL = 0; /* UMBs not in link chain */
|
|
|
|
break;
|
|
|
|
default: /* includes set, which is invalid */
|
|
|
|
unknown_int3(0x21, 0x58, R_AL, REGS);
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:59
|
|
|
|
**
|
|
|
|
** get extended error information
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_59(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_AX = doserrno;
|
|
|
|
switch (doserrno) {
|
|
|
|
case 1:
|
|
|
|
case 6:
|
|
|
|
case 9:
|
|
|
|
case 10:
|
|
|
|
case 11:
|
|
|
|
case 12:
|
|
|
|
case 13:
|
|
|
|
case 15:
|
|
|
|
R_BH = 7; /* application error */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2:
|
|
|
|
case 3:
|
|
|
|
case 4:
|
|
|
|
case 5:
|
|
|
|
R_BH = 8; /* not found */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 7:
|
|
|
|
case 8:
|
|
|
|
R_BH = 1; /* out of resource */
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
R_BH = 12; /* already exists */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
R_BL = 6; /* always ignore! */
|
|
|
|
R_CH = 1; /* unknown/inappropriate */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:5a
|
|
|
|
**
|
|
|
|
** create temporary file
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_5a(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
char fname[PATH_MAX];
|
|
|
|
char *pname;
|
|
|
|
int error;
|
|
|
|
int n;
|
|
|
|
int drive;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
/* get and check proposed path */
|
1999-09-29 20:09:19 +00:00
|
|
|
pname = (char *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
error = translate_filename(pname, fname, &drive);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "tempname(%s)\n", fname);
|
|
|
|
|
|
|
|
if (dos_readonly(drive))
|
|
|
|
return (WRITE_PROT_DISK);
|
|
|
|
|
|
|
|
n = strlen(fname);
|
|
|
|
strcat(fname,"__dostmp.XXX");
|
|
|
|
fd = mkstemp(fname);
|
|
|
|
if (fd < 0)
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
|
|
|
|
strcat(pname, fname + n); /* give back the full name */
|
|
|
|
R_AX = fd;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:60
|
|
|
|
**
|
|
|
|
** canonicalise name
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_60(regcontext_t *REGS)
|
|
|
|
{
|
1999-09-29 20:09:19 +00:00
|
|
|
return(dos_makepath((char *)MAKEPTR(R_DS, R_SI),
|
|
|
|
(char *)MAKEPTR(R_ES, R_DI)));
|
1997-08-09 01:43:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:62
|
|
|
|
**
|
|
|
|
** get current PSP
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_62(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_BX = pspseg;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:65:23
|
|
|
|
**
|
|
|
|
** determine yes/no
|
|
|
|
** (mostly for humour value 8)
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_65_23(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
switch (R_DL) {
|
|
|
|
case 'n': /* no, nein, non, nyet */
|
|
|
|
case 'N':
|
|
|
|
R_AX = 0;
|
|
|
|
break;
|
|
|
|
case 'y': /* yes */
|
|
|
|
case 'Y':
|
|
|
|
case 'j': /* ja */
|
|
|
|
case 'J':
|
|
|
|
case 'o': /* oui */
|
|
|
|
case 'O':
|
|
|
|
case 'd': /* da */
|
|
|
|
case 'D':
|
|
|
|
R_AX = 1;
|
|
|
|
break;
|
|
|
|
default: /* maybe */
|
|
|
|
R_AX = 2;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:68
|
|
|
|
** 21:6a
|
|
|
|
**
|
|
|
|
** fflush/commit file
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_fflush(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
debug(D_FILE_OPS, "fsync(%d)\n", R_BX);
|
|
|
|
|
|
|
|
if (fsync(R_BX) < 0)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
** 21:0f 21:10 21:11 21:12 21:16 21:27 21:28:21:29
|
|
|
|
**
|
|
|
|
** FCB functions
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
openfcb(struct fcb *fcbp)
|
|
|
|
{
|
|
|
|
struct stat statb;
|
|
|
|
|
|
|
|
fcbp->fcbDriveID = 3; /* drive C */
|
|
|
|
fcbp->fcbCurBlockNo = 0;
|
|
|
|
fcbp->fcbRecSize = 128;
|
|
|
|
if (fstat(fcbp->fcb_fd, &statb) < 0) {
|
|
|
|
debug(D_FILE_OPS, "open not complete with errno %d\n", errno);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
encode_dos_file_time(statb.st_mtime,
|
|
|
|
&fcbp->fcbFileDate, &fcbp->fcbFileTime);
|
|
|
|
fcbp->fcbFileSize = statb.st_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
getfcb_rec(struct fcb *fcbp, int nrec)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
|
|
|
|
n = fcbp->fcbRandomRecNo;
|
|
|
|
if (fcbp->fcbRecSize >= 64)
|
|
|
|
n &= 0xffffff;
|
|
|
|
fcbp->fcbCurRecNo = n % 128;
|
|
|
|
fcbp->fcbCurBlockNo = n / 128;
|
|
|
|
if (lseek(fcbp->fcb_fd, n * fcbp->fcbRecSize, SEEK_SET) < 0)
|
|
|
|
return (-1);
|
|
|
|
return (nrec * fcbp->fcbRecSize);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
setfcb_rec(struct fcb *fcbp, int n)
|
|
|
|
{
|
|
|
|
int recs, total;
|
|
|
|
|
|
|
|
total = fcbp->fcbRandomRecNo;
|
|
|
|
if (fcbp->fcbRecSize >= 64)
|
|
|
|
total &= 0xffffff;
|
|
|
|
recs = (n+fcbp->fcbRecSize-1) / fcbp->fcbRecSize;
|
|
|
|
total += recs;
|
|
|
|
|
|
|
|
fcbp->fcbRandomRecNo = total;
|
|
|
|
fcbp->fcbCurRecNo = total % 128;
|
|
|
|
fcbp->fcbCurBlockNo = total / 128;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
fcb_to_string(fcbp, buf)
|
|
|
|
struct fcb *fcbp;
|
|
|
|
u_char *buf;
|
|
|
|
{
|
|
|
|
|
|
|
|
if (fcbp->fcbDriveID != 0x00) {
|
1998-07-01 19:56:17 +00:00
|
|
|
*buf++ = drntol(fcbp->fcbDriveID - 1);
|
1997-08-09 01:43:15 +00:00
|
|
|
*buf++ = ':';
|
|
|
|
}
|
|
|
|
pack_name(fcbp->fcbFileName, buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
int21_fcb(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
char buf[PATH_MAX];
|
|
|
|
char fname[PATH_MAX];
|
|
|
|
struct stat sb;
|
|
|
|
dosdir_t dosdir;
|
|
|
|
struct fcb *fcbp;
|
|
|
|
find_block_t *dta;
|
|
|
|
u_char *addr;
|
|
|
|
int error;
|
|
|
|
int drive;
|
|
|
|
int fd;
|
|
|
|
int nbytes,n;
|
|
|
|
|
|
|
|
|
1999-09-29 20:09:19 +00:00
|
|
|
fcbp = (struct fcb *)MAKEPTR(R_DS, R_DX);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
switch (R_AH) {
|
|
|
|
|
|
|
|
case 0x0f: /* open file with FCB */
|
|
|
|
fcb_to_string(fcbp, buf);
|
|
|
|
error = translate_filename(buf, fname, &drive);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "open FCB(%s)\n", fname);
|
|
|
|
|
|
|
|
if (ustat(fname, &sb) < 0)
|
|
|
|
sb.st_ino = 0;
|
|
|
|
|
|
|
|
if (dos_readonly(drive))
|
|
|
|
return (WRITE_PROT_DISK);
|
|
|
|
|
|
|
|
if (sb.st_ino == 0 || S_ISDIR(sb.st_mode))
|
|
|
|
return (FILE_NOT_FOUND);
|
|
|
|
|
|
|
|
if ((fd = open(fname, O_RDWR)) < 0) {
|
|
|
|
if (errno == ENOENT)
|
|
|
|
return (FILE_NOT_FOUND);
|
|
|
|
else
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
}
|
|
|
|
|
|
|
|
fcbp->fcb_fd = fd;
|
|
|
|
openfcb(fcbp);
|
|
|
|
R_AL = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x10: /* close file with FCB */
|
|
|
|
debug(D_FILE_OPS, "close FCB(%d)\n", fcbp->fcb_fd);
|
|
|
|
|
|
|
|
if (close(fcbp->fcb_fd) < 0)
|
|
|
|
return (HANDLE_INVALID);
|
|
|
|
|
|
|
|
fcbp->fcb_fd = -1;
|
|
|
|
R_AL = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x11: /* find_first with FCB */
|
|
|
|
dta = (find_block_t *)VECPTR(disk_transfer_addr);
|
|
|
|
|
|
|
|
fcb_to_string(fcbp, buf);
|
|
|
|
error = find_first(buf, fcbp->fcbAttribute, &dosdir, dta);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
dosdir_to_dta(&dosdir, dta);
|
|
|
|
R_AL = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x12: /* find_next with FCB */
|
|
|
|
dta = (find_block_t *)VECPTR(disk_transfer_addr);
|
|
|
|
|
|
|
|
error = find_next(&dosdir, dta);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
dosdir_to_dta(&dosdir, dta);
|
|
|
|
R_AL = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x16: /* create file with FCB */
|
|
|
|
fcb_to_string(fcbp, buf);
|
|
|
|
error = translate_filename(buf, fname, &drive);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
debug(D_FILE_OPS, "creat FCB(%s)\n", fname);
|
|
|
|
|
|
|
|
if (ustat(fname, &sb) < 0)
|
|
|
|
sb.st_ino = 0;
|
|
|
|
|
|
|
|
if (dos_readonly(drive))
|
|
|
|
return (WRITE_PROT_DISK);
|
|
|
|
|
|
|
|
if (sb.st_ino && !S_ISREG(sb.st_mode))
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
|
|
|
|
if ((fd = open(fname, O_CREAT|O_TRUNC|O_RDWR, 0666)) < 0)
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
|
|
|
|
fcbp->fcb_fd = fd;
|
|
|
|
openfcb(fcbp);
|
|
|
|
R_AL = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x27: /* random block read */
|
|
|
|
addr = (u_char *)VECPTR(disk_transfer_addr);
|
|
|
|
nbytes = getfcb_rec(fcbp, R_CX);
|
|
|
|
|
|
|
|
if (nbytes < 0)
|
|
|
|
return (READ_FAULT);
|
|
|
|
n = read(fcbp->fcb_fd, addr, nbytes);
|
|
|
|
if (n < 0)
|
|
|
|
return (READ_FAULT);
|
|
|
|
R_CX = setfcb_rec(fcbp, n);
|
|
|
|
if (n < nbytes) {
|
|
|
|
nbytes = n % fcbp->fcbRecSize;
|
|
|
|
if (0 == nbytes) {
|
|
|
|
R_AL = 0x01;
|
|
|
|
} else {
|
|
|
|
bzero(addr + n, fcbp->fcbRecSize - nbytes);
|
|
|
|
R_AL = 0x03;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
R_AL = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x28: /* random block write */
|
|
|
|
addr = (u_char *)VECPTR(disk_transfer_addr);
|
|
|
|
nbytes = getfcb_rec(fcbp, R_CX);
|
|
|
|
|
|
|
|
if (nbytes < 0)
|
|
|
|
return (WRITE_FAULT);
|
|
|
|
n = write(fcbp->fcb_fd, addr, nbytes);
|
|
|
|
if (n < 0)
|
|
|
|
return (WRITE_FAULT);
|
|
|
|
R_CX = setfcb_rec(fcbp, n);
|
|
|
|
if (n < nbytes) {
|
|
|
|
R_AL = 0x01;
|
|
|
|
} else {
|
|
|
|
R_AL = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x29: /* parse filename */
|
|
|
|
debug(D_FILE_OPS,"parse filename: flag=%d, ", R_AL);
|
|
|
|
|
|
|
|
R_AX = parse_filename(R_AL,
|
1999-09-29 20:09:19 +00:00
|
|
|
(char *)MAKEPTR(R_DS, R_SI),
|
|
|
|
(char *)MAKEPTR(R_ES, R_DI),
|
1997-08-09 01:43:15 +00:00
|
|
|
&nbytes);
|
|
|
|
debug(D_FILE_OPS, "%d %s, FCB: %d, %.11s\n",
|
|
|
|
nbytes,
|
1999-09-29 20:09:19 +00:00
|
|
|
MAKEPTR(R_DS, R_SI),
|
|
|
|
*(int *)MAKEPTR(R_ES, R_DI),
|
|
|
|
MAKEPTR(R_ES, R_DI) + 1);
|
1997-08-09 01:43:15 +00:00
|
|
|
|
|
|
|
R_SI += nbytes;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
fatal("called int21_fcb with unknown function %x\n",R_AH);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:5d
|
|
|
|
** 21:5e
|
|
|
|
** 21:5f
|
|
|
|
**
|
|
|
|
** network functions
|
|
|
|
** XXX relevant?
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_net(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
switch(R_AH) {
|
|
|
|
case 0x5d:
|
|
|
|
switch(R_AL) {
|
|
|
|
case 0x06:
|
|
|
|
debug(D_HALF, "Get Swapable Area\n");
|
|
|
|
return (ACCESS_DENIED);
|
|
|
|
case 0x08: /* Set redirected printer mode */
|
|
|
|
debug(D_HALF, "Redirection is %s\n",
|
2001-02-06 11:21:58 +00:00
|
|
|
R_DL ? "separate jobs" : "combined");
|
1997-08-09 01:43:15 +00:00
|
|
|
break;
|
|
|
|
case 0x09: /* Flush redirected printer output */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
unknown_int3(0x21, 0x5d, R_AL, REGS);
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x5e:
|
|
|
|
case 0x5f:
|
|
|
|
unknown_int2(0x21, R_AH, REGS);
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
default:
|
|
|
|
fatal("called int21_net with unknown function %x\n",R_AH);
|
|
|
|
}
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:??
|
|
|
|
**
|
|
|
|
** Unknown/unsupported
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_NOFUNC(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
unknown_int2(0x21, R_AH, REGS);
|
|
|
|
return (FUNC_NUM_IVALID);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
** 21:??
|
|
|
|
**
|
|
|
|
** Null function; no error, no action
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
int21_NULLFUNC(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
R_AL = 0;
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static struct intfunc_table int21_table [] = {
|
|
|
|
{ 0x00, IFT_NOSUBFUNC, int21_00, "terminate"},
|
|
|
|
{ 0x01, IFT_NOSUBFUNC, int21_01, "read character with echo"},
|
|
|
|
{ 0x02, IFT_NOSUBFUNC, int21_02, "write char to stdout"},
|
|
|
|
{ 0x03, IFT_NOSUBFUNC, int21_NOFUNC, "read char from stdaux"},
|
|
|
|
{ 0x04, IFT_NOSUBFUNC, int21_NOFUNC, "write char to stdaux"},
|
|
|
|
{ 0x05, IFT_NOSUBFUNC, int21_NOFUNC, "write char to printer"},
|
|
|
|
{ 0x06, IFT_NOSUBFUNC, int21_06, "direct console I/O"},
|
|
|
|
{ 0x07, IFT_NOSUBFUNC, int21_07, "direct console in without echo"},
|
|
|
|
{ 0x08, IFT_NOSUBFUNC, int21_08, "read character, no echo"},
|
|
|
|
{ 0x09, IFT_NOSUBFUNC, int21_09, "write string to standard out"},
|
|
|
|
{ 0x0a, IFT_NOSUBFUNC, int21_0a, "buffered input"},
|
|
|
|
{ 0x0b, IFT_NOSUBFUNC, int21_0b, "get stdin status"},
|
|
|
|
{ 0x0c, IFT_NOSUBFUNC, int21_0c, "flush stdin and read"},
|
|
|
|
{ 0x0d, IFT_NOSUBFUNC, int21_NULLFUNC, "disk reset"},
|
|
|
|
{ 0x0e, IFT_NOSUBFUNC, int21_0e, "select default drive"},
|
|
|
|
{ 0x19, IFT_NOSUBFUNC, int21_19, "get default drive"},
|
|
|
|
{ 0x1a, IFT_NOSUBFUNC, int21_1a, "set DTA"},
|
|
|
|
{ 0x1b, IFT_NOSUBFUNC, int21_free, "get allocation for default drive"},
|
|
|
|
{ 0x1c, IFT_NOSUBFUNC, int21_free, "get allocation for specific drive"},
|
|
|
|
{ 0x1f, IFT_NOSUBFUNC, int21_NOFUNC, "get DPB for current drive"},
|
1998-07-17 00:18:52 +00:00
|
|
|
{ 0x23, IFT_NOSUBFUNC, int21_23, "Get file size (old)"},
|
1997-08-09 01:43:15 +00:00
|
|
|
{ 0x25, IFT_NOSUBFUNC, int21_25, "set interrupt vector"},
|
|
|
|
{ 0x26, IFT_NOSUBFUNC, int21_26, "create new PSP"},
|
|
|
|
{ 0x2a, IFT_NOSUBFUNC, int21_2a, "get date"},
|
|
|
|
{ 0x2b, IFT_NOSUBFUNC, int21_2b, "set date"},
|
|
|
|
{ 0x2c, IFT_NOSUBFUNC, int21_2c, "get time"},
|
|
|
|
{ 0x2d, IFT_NOSUBFUNC, int21_2d, "set time"},
|
|
|
|
{ 0x2e, IFT_NOSUBFUNC, int21_NULLFUNC, "set verify flag"},
|
|
|
|
{ 0x2f, IFT_NOSUBFUNC, int21_2f, "get DTA"},
|
|
|
|
{ 0x30, IFT_NOSUBFUNC, int21_30, "get DOS version"},
|
|
|
|
{ 0x31, IFT_NOSUBFUNC, int21_NOFUNC, "terminate and stay resident"},
|
|
|
|
{ 0x32, IFT_NOSUBFUNC, int21_NOFUNC, "get DPB for specific drive"},
|
|
|
|
{ 0x33, 0x05, int21_33_5, "get boot drive"},
|
|
|
|
{ 0x33, 0x06, int21_33_6, "get true version number"},
|
|
|
|
{ 0x33, IFT_NOSUBFUNC, int21_33, "extended break checking"},
|
|
|
|
{ 0x34, IFT_NOSUBFUNC, int21_34, "get address of InDos flag"},
|
|
|
|
{ 0x35, IFT_NOSUBFUNC, int21_35, "get interrupt vector"},
|
|
|
|
{ 0x36, IFT_NOSUBFUNC, int21_free, "get disk free space"},
|
|
|
|
{ 0x37, IFT_NOSUBFUNC, int21_37, "switch character"},
|
|
|
|
{ 0x38, IFT_NOSUBFUNC, int21_38, "country code/information"},
|
|
|
|
{ 0x39, IFT_NOSUBFUNC, int21_dirfn, "mkdir"},
|
|
|
|
{ 0x3a, IFT_NOSUBFUNC, int21_dirfn, "rmdir"},
|
|
|
|
{ 0x3b, IFT_NOSUBFUNC, int21_3b, "chdir"},
|
|
|
|
{ 0x3c, IFT_NOSUBFUNC, int21_open, "creat"},
|
|
|
|
{ 0x3d, IFT_NOSUBFUNC, int21_open, "open"},
|
|
|
|
{ 0x3e, IFT_NOSUBFUNC, int21_3e, "close"},
|
|
|
|
{ 0x3f, IFT_NOSUBFUNC, int21_3f, "read"},
|
|
|
|
{ 0x40, IFT_NOSUBFUNC, int21_40, "write"},
|
|
|
|
{ 0x41, IFT_NOSUBFUNC, int21_dirfn, "unlink"},
|
|
|
|
{ 0x42, IFT_NOSUBFUNC, int21_42, "lseek"},
|
|
|
|
{ 0x43, IFT_NOSUBFUNC, int21_43, "get/set file attributes"},
|
|
|
|
{ 0x44, 0x00, int21_44_0, "ioctl(get)"},
|
|
|
|
{ 0x44, 0x01, int21_44_1, "ioctl(set)"},
|
1998-07-17 00:18:52 +00:00
|
|
|
{ 0x44, 0x07, int21_44_7, "ioctl(Check output status)"},
|
1997-08-09 01:43:15 +00:00
|
|
|
{ 0x44, 0x08, int21_44_8, "ioctl(test removable)"},
|
|
|
|
{ 0x44, 0x09, int21_44_9, "ioctl(test remote)"},
|
|
|
|
{ 0x45, IFT_NOSUBFUNC, int21_45, "dup"},
|
|
|
|
{ 0x46, IFT_NOSUBFUNC, int21_46, "dup2"},
|
|
|
|
{ 0x47, IFT_NOSUBFUNC, int21_47, "getwd"},
|
|
|
|
{ 0x48, IFT_NOSUBFUNC, int21_48, "allocate memory"},
|
|
|
|
{ 0x49, IFT_NOSUBFUNC, int21_49, "free memory"},
|
|
|
|
{ 0x4a, IFT_NOSUBFUNC, int21_4a, "resize memory block"},
|
|
|
|
{ 0x4b, IFT_NOSUBFUNC, int21_4b, "exec"},
|
|
|
|
{ 0x4c, IFT_NOSUBFUNC, int21_4c, "exit with return code"},
|
|
|
|
{ 0x4d, IFT_NOSUBFUNC, int21_4d, "get return code from child"},
|
|
|
|
{ 0x4e, IFT_NOSUBFUNC, int21_find, "findfirst"},
|
|
|
|
{ 0x4f, IFT_NOSUBFUNC, int21_find, "findnext"},
|
|
|
|
{ 0x50, IFT_NOSUBFUNC, int21_50, "set psp"},
|
2001-05-22 11:30:22 +00:00
|
|
|
{ 0x51, IFT_NOSUBFUNC, int21_62, "get psp"},
|
1997-08-09 01:43:15 +00:00
|
|
|
{ 0x52, IFT_NOSUBFUNC, int21_NOFUNC, "get LoL"},
|
|
|
|
{ 0x53, IFT_NOSUBFUNC, int21_NOFUNC, "translate BPB to DPB"},
|
|
|
|
{ 0x54, IFT_NOSUBFUNC, int21_NULLFUNC, "get verify flag"},
|
|
|
|
{ 0x55, IFT_NOSUBFUNC, int21_NOFUNC, "create PSP"},
|
|
|
|
{ 0x56, IFT_NOSUBFUNC, int21_dirfn, "rename"},
|
|
|
|
{ 0x57, 0x00, int21_57_0, "get mtime"},
|
|
|
|
{ 0x57, 0x01, int21_57_1, "set mtime"},
|
|
|
|
{ 0x58, IFT_NOSUBFUNC, int21_58, "get/set memory strategy"},
|
|
|
|
{ 0x59, IFT_NOSUBFUNC, int21_59, "get extended error information"},
|
|
|
|
{ 0x5a, IFT_NOSUBFUNC, int21_5a, "create temporary file"},
|
|
|
|
{ 0x5b, IFT_NOSUBFUNC, int21_open, "create new file"},
|
|
|
|
{ 0x5c, IFT_NOSUBFUNC, int21_NOFUNC, "flock"},
|
|
|
|
{ 0x5d, IFT_NOSUBFUNC, int21_net, "network functions"},
|
|
|
|
{ 0x5e, IFT_NOSUBFUNC, int21_net, "network functions"},
|
|
|
|
{ 0x5f, IFT_NOSUBFUNC, int21_net, "network functions"},
|
|
|
|
{ 0x60, IFT_NOSUBFUNC, int21_60, "canonicalise name/path"},
|
|
|
|
{ 0x61, IFT_NOSUBFUNC, int21_NULLFUNC, "network functions (reserved)"},
|
|
|
|
{ 0x62, IFT_NOSUBFUNC, int21_62, "get current PSP"},
|
|
|
|
{ 0x63, IFT_NOSUBFUNC, int21_NOFUNC, "get DBCS lead-byte table"},
|
|
|
|
{ 0x64, IFT_NOSUBFUNC, int21_NOFUNC, "set device-driver lookahead"},
|
|
|
|
{ 0x65, 0x23, int21_65_23, "determine yes/no"},
|
|
|
|
{ 0x65, IFT_NOSUBFUNC, int21_NOFUNC, "get extended country information"},
|
|
|
|
{ 0x66, IFT_NOSUBFUNC, int21_NOFUNC, "get/set codepage table"},
|
|
|
|
{ 0x67, IFT_NOSUBFUNC, int21_NULLFUNC, "set handle count"},
|
|
|
|
{ 0x68, IFT_NOSUBFUNC, int21_fflush, "fflush"},
|
|
|
|
{ 0x69, IFT_NOSUBFUNC, int21_NOFUNC, "get/set disk serial number"},
|
|
|
|
{ 0x6a, IFT_NOSUBFUNC, int21_fflush, "commit file"},
|
|
|
|
{ 0x6b, IFT_NOSUBFUNC, int21_NULLFUNC, "IFS ioctl"},
|
|
|
|
{ 0x6c, IFT_NOSUBFUNC, int21_open, "extended open/create"},
|
|
|
|
|
|
|
|
/* FCB functions */
|
|
|
|
{ 0x0f, IFT_NOSUBFUNC, int21_fcb, "open file"},
|
|
|
|
{ 0x10, IFT_NOSUBFUNC, int21_fcb, "close file"},
|
|
|
|
{ 0x11, IFT_NOSUBFUNC, int21_fcb, "find first"},
|
|
|
|
{ 0x12, IFT_NOSUBFUNC, int21_fcb, "find next"},
|
|
|
|
{ 0x13, IFT_NOSUBFUNC, int21_NOFUNC, "delete"},
|
|
|
|
{ 0x14, IFT_NOSUBFUNC, int21_NOFUNC, "sequential read"},
|
|
|
|
{ 0x15, IFT_NOSUBFUNC, int21_NOFUNC, "sequential write"},
|
|
|
|
{ 0x16, IFT_NOSUBFUNC, int21_fcb, "create/truncate"},
|
|
|
|
{ 0x17, IFT_NOSUBFUNC, int21_NOFUNC, "rename"},
|
|
|
|
{ 0x21, IFT_NOSUBFUNC, int21_NOFUNC, "read random"},
|
|
|
|
{ 0x22, IFT_NOSUBFUNC, int21_NOFUNC, "write random"},
|
|
|
|
{ 0x23, IFT_NOSUBFUNC, int21_NOFUNC, "get file size"},
|
|
|
|
{ 0x24, IFT_NOSUBFUNC, int21_NOFUNC, "set random record number"},
|
|
|
|
{ 0x27, IFT_NOSUBFUNC, int21_fcb, "random block read"},
|
|
|
|
{ 0x28, IFT_NOSUBFUNC, int21_fcb, "random block write"},
|
|
|
|
{ 0x29, IFT_NOSUBFUNC, int21_fcb, "parse filename into FCB"},
|
|
|
|
|
|
|
|
/* CPM compactability */
|
|
|
|
{ 0x18, IFT_NOSUBFUNC, int21_NULLFUNC, "CPM"},
|
|
|
|
{ 0x1d, IFT_NOSUBFUNC, int21_NULLFUNC, "CPM"},
|
|
|
|
{ 0x1e, IFT_NOSUBFUNC, int21_NULLFUNC, "CPM"},
|
|
|
|
{ 0x20, IFT_NOSUBFUNC, int21_NULLFUNC, "CPM"},
|
|
|
|
|
|
|
|
{ -1, IFT_NOSUBFUNC, NULL, NULL} /* terminator */
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
static int int21_fastlookup[256];
|
|
|
|
|
|
|
|
char *dos_return[] = {
|
|
|
|
"OK",
|
|
|
|
"FUNC_NUM_IVALID",
|
|
|
|
"FILE_NOT_FOUND",
|
|
|
|
"PATH_NOT_FOUND",
|
|
|
|
"TOO_MANY_OPEN_FILES",
|
|
|
|
"ACCESS_DENIED",
|
|
|
|
"HANDLE_INVALID",
|
|
|
|
"MEM_CB_DEST",
|
|
|
|
"INSUF_MEM",
|
|
|
|
"MEM_BLK_ADDR_IVALID",
|
|
|
|
"ENV_INVALID",
|
|
|
|
"FORMAT_INVALID",
|
|
|
|
"ACCESS_CODE_INVALID",
|
|
|
|
"DATA_INVALID",
|
|
|
|
"UNKNOWN_UNIT",
|
|
|
|
"DISK_DRIVE_INVALID",
|
|
|
|
"ATT_REM_CUR_DIR",
|
|
|
|
"NOT_SAME_DEV",
|
|
|
|
"NO_MORE_FILES",
|
|
|
|
"WRITE_PROT_DISK",
|
|
|
|
"UNKNOWN_UNIT_CERR",
|
|
|
|
"DRIVE_NOT_READY",
|
|
|
|
"UNKNOWN_COMMAND",
|
|
|
|
"DATA_ERROR_CRC",
|
|
|
|
"BAD_REQ_STRUCT_LEN",
|
|
|
|
"SEEK_ERROR",
|
|
|
|
"UNKNOWN_MEDIA_TYPE",
|
|
|
|
"SECTOR_NOT_FOUND",
|
|
|
|
"PRINTER_OUT_OF_PAPER",
|
|
|
|
"WRITE_FAULT",
|
|
|
|
"READ_FAULT",
|
|
|
|
"GENERAL_FAILURE"
|
|
|
|
};
|
|
|
|
|
|
|
|
const int dos_ret_size = (sizeof(dos_return) / sizeof(char *));
|
|
|
|
|
|
|
|
/*
|
|
|
|
** for want of anywhere better to go
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
int20(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
/* int 20 = exit(0) */
|
|
|
|
done(REGS, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
int29(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
tty_write(R_AL, TTYF_REDIRECT);
|
|
|
|
}
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
** entrypoint for MS-DOS functions
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
int21(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
int index;
|
|
|
|
|
|
|
|
/* look for a handler */
|
|
|
|
index = intfunc_find(int21_table, int21_fastlookup, R_AH, R_AL);
|
|
|
|
|
|
|
|
if (index == -1) { /* no matching functions */
|
1998-07-17 00:18:52 +00:00
|
|
|
unknown_int3(0x21, R_AH, R_AL, REGS);
|
|
|
|
R_FLAGS |= PSL_C; /* Flag an error */
|
|
|
|
R_AX = 0xff;
|
1997-08-09 01:43:15 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* call the handler */
|
|
|
|
error = int21_table[index].handler(REGS);
|
|
|
|
debug(D_DOSCALL, "msdos call %02x (%s) returns %d (%s)\n",
|
|
|
|
int21_table[index].func, int21_table[index].desc, error,
|
|
|
|
((error >= 0) && (error <= dos_ret_size)) ? dos_return[error] : "unknown");
|
|
|
|
|
|
|
|
if (error) {
|
|
|
|
doserrno = error;
|
|
|
|
R_FLAGS |= PSL_C;
|
|
|
|
|
|
|
|
/* XXX is this entirely legitimate? */
|
|
|
|
if (R_AH >= 0x2f)
|
|
|
|
R_AX = error;
|
|
|
|
else
|
|
|
|
R_AX = 0xff;
|
|
|
|
} else {
|
|
|
|
R_FLAGS &= ~PSL_C;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
1998-07-16 23:54:26 +00:00
|
|
|
static void
|
|
|
|
int67(regcontext_t *REGS)
|
|
|
|
{
|
|
|
|
ems_entry(REGS);
|
|
|
|
}
|
|
|
|
|
1997-08-09 01:43:15 +00:00
|
|
|
static u_char upcase_trampoline[] = {
|
|
|
|
0xf4, /* HLT */
|
|
|
|
0xcb, /* RETF */
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
** initialise thyself
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
dos_init(void)
|
|
|
|
{
|
|
|
|
u_long vec;
|
|
|
|
int hn;
|
|
|
|
|
|
|
|
/* hook vectors */
|
|
|
|
vec = insert_softint_trampoline();
|
|
|
|
ivec[0x20] = vec;
|
|
|
|
register_callback(vec, int20, "int 20");
|
|
|
|
|
|
|
|
vec = insert_softint_trampoline();
|
|
|
|
ivec[0x21] = vec;
|
|
|
|
register_callback(vec, int21, "int 21");
|
|
|
|
|
|
|
|
vec = insert_softint_trampoline();
|
|
|
|
ivec[0x29] = vec;
|
|
|
|
register_callback(vec, int29, "int 29");
|
|
|
|
|
1998-07-16 23:54:26 +00:00
|
|
|
vec = insert_softint_trampoline();
|
|
|
|
ivec[0x67] = vec;
|
|
|
|
register_callback(vec, int67, "int 67 (EMS)");
|
|
|
|
|
1997-08-09 01:43:15 +00:00
|
|
|
vec = insert_null_trampoline();
|
|
|
|
ivec[0x28] = vec; /* dos idle */
|
|
|
|
ivec[0x2b] = vec; /* reserved */
|
|
|
|
ivec[0x2c] = vec; /* reserved */
|
|
|
|
ivec[0x2d] = vec; /* reserved */
|
|
|
|
|
|
|
|
upcase_vector = insert_generic_trampoline(
|
|
|
|
sizeof(upcase_trampoline), upcase_trampoline);
|
|
|
|
register_callback(upcase_vector, upcase_entry, "upcase");
|
|
|
|
|
|
|
|
/* build fastlookup index into the monster table of interrupts */
|
|
|
|
intfunc_init(int21_table, int21_fastlookup);
|
1998-07-16 23:54:26 +00:00
|
|
|
|
|
|
|
ems_init();
|
1997-08-09 01:43:15 +00:00
|
|
|
}
|