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Sweden-Number/dlls/krnl386.exe16/int21.c

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/*
* DOS interrupt 21h handler
*
* Copyright 1993, 1994 Erik Bos
* Copyright 1996 Alexandre Julliard
* Copyright 1997 Andreas Mohr
* Copyright 1998 Uwe Bonnes
* Copyright 1998, 1999 Ove Kaaven
* Copyright 2003 Thomas Mertes
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "wincon.h"
#include "winternl.h"
#include "wine/winbase16.h"
#include "kernel16_private.h"
#include "dosexe.h"
#include "winerror.h"
#include "winuser.h"
#include "wine/debug.h"
#include "wine/exception.h"
/*
* Note:
* - Most of the file related functions are wrong. NT's kernel32
* doesn't maintain a per drive current directory, while DOS does.
* We should in fact keep track in here of those per drive
* directories, and use this info while dealing with partial paths
* (drive defined, but only relative paths). This could even be
* created as an array of CDS (there should be an entry for that in
* the LOL)
*/
/*
* Forward declarations.
*/
static BOOL INT21_RenameFile( CONTEXT *context );
WINE_DEFAULT_DEBUG_CHANNEL(int21);
#include "pshpack1.h"
/*
* Extended Drive Parameter Block.
* This structure is compatible with standard DOS4+ DPB and
* extended DOS7 DPB.
*/
typedef struct _INT21_DPB {
BYTE drive; /* 00 drive number (0=A, ...) */
BYTE unit; /* 01 unit number within device driver */
WORD sector_bytes; /* 02 bytes per sector */
BYTE cluster_sectors; /* 04 highest sector number within a cluster */
BYTE shift; /* 05 shift count to convert clusters into sectors */
WORD num_reserved; /* 06 reserved sectors at beginning of drive */
BYTE num_FAT; /* 08 number of FATs */
WORD num_root_entries; /* 09 number of root directory entries */
WORD first_data_sector; /* 0b number of first sector containing user data */
WORD num_clusters1; /* 0d highest cluster number (number of data clusters + 1) */
WORD sectors_per_FAT; /* 0f number of sectors per FAT */
WORD first_dir_sector; /* 11 sector number of first directory sector */
SEGPTR driver_header; /* 13 address of device driver header */
BYTE media_ID; /* 17 media ID byte */
BYTE access_flag; /* 18 0x00 if disk accessed, 0xff if not */
SEGPTR next; /* 19 pointer to next DPB */
WORD search_cluster1; /* 1d cluster at which to start search for free space */
WORD free_clusters_lo; /* 1f number of free clusters on drive or 0xffff if unknown */
WORD free_clusters_hi; /* 21 hiword of clusters_free */
WORD mirroring_flags; /* 23 active FAT/mirroring flags */
WORD info_sector; /* 25 sector number of file system info sector or 0xffff for none */
WORD spare_boot_sector; /* 27 sector number of backup boot sector or 0xffff for none */
DWORD first_cluster_sector; /* 29 sector number of the first cluster */
DWORD num_clusters2; /* 2d maximum cluster number */
DWORD fat_clusters; /* 31 number of clusters occupied by FAT */
DWORD root_cluster; /* 35 cluster number of start of root directory */
DWORD search_cluster2; /* 39 cluster at which to start searching for free space */
} INT21_DPB;
/*
* Structure for DOS data that can be accessed directly from applications.
* Real and protected mode pointers will be returned to this structure so
* the structure must be correctly packed.
*/
typedef struct _INT21_HEAP {
WORD uppercase_size; /* Size of the following table in bytes */
BYTE uppercase_table[128]; /* Uppercase equivalents of chars from 0x80 to 0xff. */
WORD lowercase_size; /* Size of the following table in bytes */
BYTE lowercase_table[256]; /* Lowercase equivalents of chars from 0x00 to 0xff. */
WORD collating_size; /* Size of the following table in bytes */
BYTE collating_table[256]; /* Values used to sort characters from 0x00 to 0xff. */
WORD filename_size; /* Size of the following filename data in bytes */
BYTE filename_reserved1; /* 0x01 for MS-DOS 3.30-6.00 */
BYTE filename_lowest; /* Lowest permissible character value for filename */
BYTE filename_highest; /* Highest permissible character value for filename */
BYTE filename_reserved2; /* 0x00 for MS-DOS 3.30-6.00 */
BYTE filename_exclude_first; /* First illegal character in permissible range */
BYTE filename_exclude_last; /* Last illegal character in permissible range */
BYTE filename_reserved3; /* 0x02 for MS-DOS 3.30-6.00 */
BYTE filename_illegal_size; /* Number of terminators in the following table */
BYTE filename_illegal_table[16]; /* Characters which terminate a filename */
WORD dbcs_size; /* Number of valid ranges in the following table */
BYTE dbcs_table[16]; /* Start/end bytes for N ranges and 00/00 as terminator */
BYTE misc_indos; /* Interrupt 21 nesting flag */
WORD misc_selector; /* Protected mode selector for INT21_HEAP */
INT21_DPB misc_dpb_list[MAX_DOS_DRIVES]; /* Drive parameter blocks for all drives */
} INT21_HEAP;
struct FCB {
BYTE drive_number;
CHAR file_name[8];
CHAR file_extension[3];
WORD current_block_number;
WORD logical_record_size;
DWORD file_size;
WORD date_of_last_write;
WORD time_of_last_write;
BYTE file_number;
BYTE attributes;
WORD starting_cluster;
WORD sequence_number;
BYTE file_attributes;
BYTE unused;
BYTE record_within_current_block;
BYTE random_access_record_number[4];
};
struct XFCB {
BYTE xfcb_signature;
BYTE reserved[5];
BYTE xfcb_file_attribute;
BYTE fcb[37];
};
/* DTA layout for FindFirst/FindNext */
typedef struct
{
BYTE drive; /* 00 drive letter */
char mask[11]; /* 01 search template */
BYTE search_attr; /* 0c search attributes */
WORD count; /* 0d entry count within directory */
WORD cluster; /* 0f cluster of parent directory */
WCHAR *fullPath; /* 11 full path (was: reserved) */
BYTE fileattr; /* 15 file attributes */
WORD filetime; /* 16 file time */
WORD filedate; /* 18 file date */
DWORD filesize; /* 1a file size */
char filename[13]; /* 1e file name + extension */
} FINDFILE_DTA;
/* FCB layout for FindFirstFCB/FindNextFCB */
typedef struct
{
BYTE drive; /* 00 drive letter */
char filename[11]; /* 01 filename 8+3 format */
int count; /* 0c entry count (was: reserved) */
WCHAR *fullPath; /* 10 full path (was: reserved) */
} FINDFILE_FCB;
/* DOS directory entry for FindFirstFCB/FindNextFCB */
typedef struct
{
char filename[11]; /* 00 filename 8+3 format */
BYTE fileattr; /* 0b file attributes */
BYTE reserved[10]; /* 0c reserved */
WORD filetime; /* 16 file time */
WORD filedate; /* 18 file date */
WORD cluster; /* 1a file first cluster */
DWORD filesize; /* 1c file size */
} DOS_DIRENTRY_LAYOUT;
#include "poppack.h"
/* dos file attributes */
#define FA_NORMAL 0x00 /* Normal file, no attributes */
#define FA_RDONLY 0x01 /* Read only attribute */
#define FA_HIDDEN 0x02 /* Hidden file */
#define FA_SYSTEM 0x04 /* System file */
#define FA_LABEL 0x08 /* Volume label */
#define FA_DIRECTORY 0x10 /* Directory */
#define FA_ARCHIVE 0x20 /* Archive */
#define FA_UNUSED 0x40 /* Unused */
/* Error codes */
#define ER_NoNetwork 0x49
/* Error classes */
#define EC_OutOfResource 0x01
#define EC_Temporary 0x02
#define EC_AccessDenied 0x03
#define EC_InternalError 0x04
#define EC_HardwareFailure 0x05
#define EC_SystemFailure 0x06
#define EC_ProgramError 0x07
#define EC_NotFound 0x08
#define EC_MediaError 0x0b
#define EC_Exists 0x0c
#define EC_Unknown 0x0d
/* Suggested actions */
#define SA_Retry 0x01
#define SA_DelayedRetry 0x02
#define SA_Abort 0x04
#define SA_Ignore 0x06
#define SA_Ask4Retry 0x07
/* Error locus */
#define EL_Unknown 0x01
#define EL_Disk 0x02
#define EL_Network 0x03
#define EL_Serial 0x04
#define EL_Memory 0x05
/* BIOS Keyboard Scancodes */
#define KEY_LEFT 0x4B
#define KEY_RIGHT 0x4D
#define KEY_UP 0x48
#define KEY_DOWN 0x50
#define KEY_IC 0x52 /* insert char */
#define KEY_DC 0x53 /* delete char */
#define KEY_BACKSPACE 0x0E
#define KEY_HOME 0x47
#define KEY_END 0x4F
#define KEY_NPAGE 0x49
#define KEY_PPAGE 0x51
static int brk_flag;
static BYTE drive_number( WCHAR letter )
{
if (letter >= 'A' && letter <= 'Z') return letter - 'A';
if (letter >= 'a' && letter <= 'z') return letter - 'a';
return MAX_DOS_DRIVES;
}
/* Many calls translate a drive argument like this:
drive number (00h = default, 01h = A:, etc)
*/
/******************************************************************
* INT21_DriveName
*
* Many calls translate a drive argument like this:
* drive number (00h = default, 01h = A:, etc)
*/
static const char *INT21_DriveName(int drive)
{
if (drive > 0)
{
if (drive <= 26) return wine_dbg_sprintf("%c:", 'A' + drive - 1);
else return wine_dbg_sprintf( "<Bad drive: %d>", drive);
}
return "default";
}
/***********************************************************************
* INT21_GetCurrentDrive
*
* Return current drive using scheme (0=A:, 1=B:, 2=C:, ...) or
* MAX_DOS_DRIVES on error.
*/
static BYTE INT21_GetCurrentDrive(void)
{
WCHAR current_directory[MAX_PATH];
if (!GetCurrentDirectoryW( MAX_PATH, current_directory ) ||
current_directory[1] != ':')
{
TRACE( "Failed to get current drive.\n" );
return MAX_DOS_DRIVES;
}
return drive_number( current_directory[0] );
}
/***********************************************************************
* INT21_MapDrive
*
* Convert drive number from scheme (0=default, 1=A:, 2=B:, ...) into
* scheme (0=A:, 1=B:, 2=C:, ...) or MAX_DOS_DRIVES on error.
*/
static BYTE INT21_MapDrive( BYTE drive )
{
if (drive)
{
WCHAR drivespec[] = {'A', ':', 0};
UINT drivetype;
drivespec[0] += drive - 1;
drivetype = GetDriveTypeW( drivespec );
if (drivetype == DRIVE_UNKNOWN || drivetype == DRIVE_NO_ROOT_DIR)
return MAX_DOS_DRIVES;
return drive - 1;
}
return INT21_GetCurrentDrive();
}
/***********************************************************************
* INT21_SetCurrentDrive
*
* Set current drive. Uses scheme (0=A:, 1=B:, 2=C:, ...).
*/
static void INT21_SetCurrentDrive( BYTE drive )
{
WCHAR drivespec[] = {'A', ':', 0};
drivespec[0] += drive;
if (!SetCurrentDirectoryW( drivespec ))
TRACE( "Failed to set current drive.\n" );
}
/***********************************************************************
* INT21_GetSystemCountryCode
*
* Return DOS country code for default system locale.
*/
static WORD INT21_GetSystemCountryCode( void )
{
return GetSystemDefaultLangID();
}
/***********************************************************************
* INT21_FillCountryInformation
*
* Fill 34-byte buffer with country information data using
* default system locale.
*/
static void INT21_FillCountryInformation( BYTE *buffer )
{
/* 00 - WORD: date format
* 00 = mm/dd/yy
* 01 = dd/mm/yy
* 02 = yy/mm/dd
*/
*(WORD*)(buffer + 0) = 0; /* FIXME: Get from locale */
/* 02 - BYTE[5]: ASCIIZ currency symbol string */
buffer[2] = '$'; /* FIXME: Get from locale */
buffer[3] = 0;
/* 07 - BYTE[2]: ASCIIZ thousands separator */
buffer[7] = 0; /* FIXME: Get from locale */
buffer[8] = 0;
/* 09 - BYTE[2]: ASCIIZ decimal separator */
buffer[9] = '.'; /* FIXME: Get from locale */
buffer[10] = 0;
/* 11 - BYTE[2]: ASCIIZ date separator */
buffer[11] = '/'; /* FIXME: Get from locale */
buffer[12] = 0;
/* 13 - BYTE[2]: ASCIIZ time separator */
buffer[13] = ':'; /* FIXME: Get from locale */
buffer[14] = 0;
/* 15 - BYTE: Currency format
* bit 2 = set if currency symbol replaces decimal point
* bit 1 = number of spaces between value and currency symbol
* bit 0 = 0 if currency symbol precedes value
* 1 if currency symbol follows value
*/
buffer[15] = 0; /* FIXME: Get from locale */
/* 16 - BYTE: Number of digits after decimal in currency */
buffer[16] = 0; /* FIXME: Get from locale */
/* 17 - BYTE: Time format
* bit 0 = 0 if 12-hour clock
* 1 if 24-hour clock
*/
buffer[17] = 1; /* FIXME: Get from locale */
/* 18 - DWORD: Address of case map routine */
*(DWORD*)(buffer + 18) = 0; /* FIXME: ptr to case map routine */
/* 22 - BYTE[2]: ASCIIZ data-list separator */
buffer[22] = ','; /* FIXME: Get from locale */
buffer[23] = 0;
/* 24 - BYTE[10]: Reserved */
memset( buffer + 24, 0, 10 );
}
/***********************************************************************
* INT21_FillHeap
*
* Initialize DOS heap.
*
* Filename Terminator Table of w2k DE NTVDM:
* 16 00 01 00 FF 00 00 20-02 0E 2E 22 2F 5C 5B 5D ....... ..."/\[]
* 3A 7C 3C 3E 2B 3D 3B 2C-00 :|<>+=;,
*/
static void INT21_FillHeap( INT21_HEAP *heap )
{
static const char terminators[] = ".\"/\\[]:|<>+=;,";
int i;
/*
* Uppercase table.
*/
heap->uppercase_size = 128;
for (i = 0; i < 128; i++)
heap->uppercase_table[i] = toupper( 128 + i );
/*
* Lowercase table.
*/
heap->lowercase_size = 256;
for (i = 0; i < 256; i++)
heap->lowercase_table[i] = tolower( i );
/*
* Collating table.
*/
heap->collating_size = 256;
for (i = 0; i < 256; i++)
heap->collating_table[i] = i;
/*
* Filename table.
*/
heap->filename_size = 8 + strlen(terminators);
heap->filename_illegal_size = strlen(terminators);
memcpy( heap->filename_illegal_table, terminators, heap->filename_illegal_size );
heap->filename_reserved1 = 0x01;
heap->filename_lowest = 0x00;
heap->filename_highest = 0xff;
heap->filename_reserved2 = 0x00;
heap->filename_exclude_first = 0x00;
heap->filename_exclude_last = 0x20;
heap->filename_reserved3 = 0x02;
/*
* DBCS lead byte table. This table is empty.
*/
heap->dbcs_size = 0;
memset( heap->dbcs_table, 0, sizeof(heap->dbcs_table) );
/*
* Initialize InDos flag.
*/
heap->misc_indos = 0;
/*
* FIXME: Should drive parameter blocks (DPB) be
* initialized here and linked to DOS LOL?
*/
}
/***********************************************************************
* INT21_GetHeapPointer
*
* Get pointer for DOS heap (INT21_HEAP).
* Creates and initializes heap on first call.
*/
static INT21_HEAP *INT21_GetHeapPointer( void )
{
static INT21_HEAP *heap_pointer = NULL;
if (!heap_pointer)
{
WORD heap_selector = GlobalAlloc16( GMEM_FIXED, sizeof(INT21_HEAP) );
heap_pointer = GlobalLock16( heap_selector );
heap_pointer->misc_selector = heap_selector;
INT21_FillHeap( heap_pointer );
}
return heap_pointer;
}
/***********************************************************************
* INT21_GetHeapSelector
*
* Get segment/selector for DOS heap (INT21_HEAP).
* Creates and initializes heap on first call.
*/
static WORD INT21_GetHeapSelector( CONTEXT *context )
{
INT21_HEAP *heap = INT21_GetHeapPointer();
return heap->misc_selector;
}
/***********************************************************************
* INT21_FillDrivePB
*
* Fill DOS heap drive parameter block for the specified drive.
* Return TRUE if drive was valid and there were
* no errors while reading drive information.
*/
static BOOL INT21_FillDrivePB( BYTE drive )
{
WCHAR drivespec[] = {'A', ':', 0};
INT21_HEAP *heap = INT21_GetHeapPointer();
INT21_DPB *dpb;
UINT drivetype;
DWORD cluster_sectors;
DWORD sector_bytes;
DWORD free_clusters;
DWORD total_clusters;
if (drive >= MAX_DOS_DRIVES)
return FALSE;
dpb = &heap->misc_dpb_list[drive];
drivespec[0] += drive;
drivetype = GetDriveTypeW( drivespec );
/*
* FIXME: Does this check work correctly with floppy/cdrom drives?
*/
if (drivetype == DRIVE_NO_ROOT_DIR || drivetype == DRIVE_UNKNOWN)
return FALSE;
/*
* FIXME: Does this check work correctly with floppy/cdrom drives?
*/
if (!GetDiskFreeSpaceW( drivespec, &cluster_sectors, &sector_bytes,
&free_clusters, &total_clusters ))
return FALSE;
/*
* FIXME: Most of the values listed below are incorrect.
* All values should be validated.
*/
dpb->drive = drive;
dpb->unit = 0;
dpb->sector_bytes = sector_bytes;
dpb->cluster_sectors = cluster_sectors - 1;
dpb->shift = 0;
while (cluster_sectors > 1)
{
cluster_sectors /= 2;
dpb->shift++;
}
dpb->num_reserved = 0;
dpb->num_FAT = 1;
dpb->num_root_entries = 2;
dpb->first_data_sector = 2;
dpb->num_clusters1 = total_clusters;
dpb->sectors_per_FAT = 1;
dpb->first_dir_sector = 1;
dpb->driver_header = 0;
dpb->media_ID = (drivetype == DRIVE_FIXED) ? 0xF8 : 0xF0;
dpb->access_flag = 0;
dpb->next = 0;
dpb->search_cluster1 = 0;
dpb->free_clusters_lo = LOWORD(free_clusters);
dpb->free_clusters_hi = HIWORD(free_clusters);
dpb->mirroring_flags = 0;
dpb->info_sector = 0xffff;
dpb->spare_boot_sector = 0xffff;
dpb->first_cluster_sector = 0;
dpb->num_clusters2 = total_clusters;
dpb->fat_clusters = 32;
dpb->root_cluster = 0;
dpb->search_cluster2 = 0;
return TRUE;
}
/***********************************************************************
* INT21_GetCurrentDirectory
*
* Handler for:
* - function 0x47
* - subfunction 0x47 of function 0x71
*/
static BOOL INT21_GetCurrentDirectory( CONTEXT *context, BOOL islong )
{
char *buffer = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi);
BYTE drive = INT21_MapDrive( DL_reg(context) );
WCHAR pathW[MAX_PATH];
char pathA[MAX_PATH];
WCHAR *ptr = pathW;
TRACE( "drive %d\n", DL_reg(context) );
if (drive == MAX_DOS_DRIVES)
{
SetLastError(ERROR_INVALID_DRIVE);
return FALSE;
}
/*
* Grab current directory.
*/
if (!GetCurrentDirectoryW( MAX_PATH, pathW )) return FALSE;
if (drive_number( pathW[0] ) != drive || pathW[1] != ':')
{
/* cwd is not on the requested drive, get the environment string instead */
WCHAR env_var[4];
env_var[0] = '=';
env_var[1] = 'A' + drive;
env_var[2] = ':';
env_var[3] = 0;
if (!GetEnvironmentVariableW( env_var, pathW, MAX_PATH ))
{
/* return empty path */
buffer[0] = 0;
return TRUE;
}
}
/*
* Convert into short format.
*/
if (!islong)
{
DWORD result = GetShortPathNameW( pathW, pathW, MAX_PATH );
if (!result)
return FALSE;
if (result > MAX_PATH)
{
WARN( "Short path too long!\n" );
SetLastError(ERROR_NETWORK_BUSY); /* Internal Wine error. */
return FALSE;
}
}
/*
* The returned pathname does not include
* the drive letter, colon or leading backslash.
*/
if (ptr[0] == '\\')
{
/*
* FIXME: We should probably just strip host part from name...
*/
FIXME( "UNC names are not supported.\n" );
SetLastError(ERROR_NETWORK_BUSY); /* Internal Wine error. */
return FALSE;
}
else if (!ptr[0] || ptr[1] != ':' || ptr[2] != '\\')
{
WARN( "Path is neither UNC nor DOS path: %s\n",
wine_dbgstr_w(ptr) );
SetLastError(ERROR_NETWORK_BUSY); /* Internal Wine error. */
return FALSE;
}
else
{
/* Remove drive letter, colon and leading backslash. */
ptr += 3;
}
/*
* Convert into OEM string.
*/
if (!WideCharToMultiByte(CP_OEMCP, 0, ptr, -1, pathA,
MAX_PATH, NULL, NULL))
{
WARN( "Cannot convert path!\n" );
SetLastError(ERROR_NETWORK_BUSY); /* Internal Wine error. */
return FALSE;
}
/*
* Success.
*/
if (!islong)
{
/* Undocumented success code. */
SET_AX( context, 0x0100 );
/* Truncate buffer to 64 bytes. */
pathA[63] = 0;
}
TRACE( "%c:=%s\n", 'A' + drive, pathA );
strcpy( buffer, pathA );
return TRUE;
}
/***********************************************************************
* INT21_SetCurrentDirectory
*
* Handler for:
* - function 0x3b
* - subfunction 0x3b of function 0x71
*/
static BOOL INT21_SetCurrentDirectory( CONTEXT *context )
{
WCHAR dirW[MAX_PATH];
WCHAR env_var[4];
DWORD attr;
char *dirA = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
BYTE drive = INT21_GetCurrentDrive();
BOOL result;
TRACE( "SET CURRENT DIRECTORY %s\n", dirA );
MultiByteToWideChar(CP_OEMCP, 0, dirA, -1, dirW, MAX_PATH);
if (!GetFullPathNameW( dirW, MAX_PATH, dirW, NULL )) return FALSE;
attr = GetFileAttributesW( dirW );
if (attr == INVALID_FILE_ATTRIBUTES || !(attr & FILE_ATTRIBUTE_DIRECTORY))
{
SetLastError( ERROR_PATH_NOT_FOUND );
return FALSE;
}
env_var[0] = '=';
env_var[1] = dirW[0];
env_var[2] = ':';
env_var[3] = 0;
result = SetEnvironmentVariableW( env_var, dirW );
/* only set current directory if on the current drive */
if (result && (drive_number( dirW[0] ) == drive)) result = SetCurrentDirectoryW( dirW );
return result;
}
/***********************************************************************
* INT21_CreateFile
*
* Handler for:
* - function 0x3c
* - function 0x3d
* - function 0x5b
* - function 0x6c
* - subfunction 0x6c of function 0x71
*/
static BOOL INT21_CreateFile( CONTEXT *context,
DWORD pathSegOff,
BOOL returnStatus,
WORD dosAccessShare,
BYTE dosAction )
{
WORD dosStatus;
char *pathA = CTX_SEG_OFF_TO_LIN(context, context->SegDs, pathSegOff);
WCHAR pathW[MAX_PATH];
DWORD winAccess;
DWORD winAttributes;
HANDLE winHandle;
DWORD winMode;
DWORD winSharing;
TRACE( "CreateFile called: function=%02x, action=%02x, access/share=%04x, "
"create flags=%04x, file=%s.\n",
AH_reg(context), dosAction, dosAccessShare, CX_reg(context), pathA );
/*
* Application tried to create/open a file whose name
* ends with a backslash. This is not allowed.
*
* FIXME: This needs to be validated, especially the return value.
*/
if (pathA[strlen(pathA) - 1] == '/')
{
SetLastError( ERROR_FILE_NOT_FOUND );
return FALSE;
}
/*
* Convert DOS action flags into Win32 creation disposition parameter.
*/
switch(dosAction)
{
case 0x01:
winMode = OPEN_EXISTING;
break;
case 0x02:
winMode = TRUNCATE_EXISTING;
break;
case 0x10:
winMode = CREATE_NEW;
break;
case 0x11:
winMode = OPEN_ALWAYS;
break;
case 0x12:
winMode = CREATE_ALWAYS;
break;
default:
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
/*
* Convert DOS access/share flags into Win32 desired access parameter.
*/
switch(dosAccessShare & 0x07)
{
case OF_READ:
winAccess = GENERIC_READ;
break;
case OF_WRITE:
winAccess = GENERIC_WRITE;
break;
case OF_READWRITE:
winAccess = GENERIC_READ | GENERIC_WRITE;
break;
case 0x04:
/*
* Read-only, do not modify file's last-access time (DOS7).
*
* FIXME: How to prevent modification of last-access time?
*/
winAccess = GENERIC_READ;
break;
default:
winAccess = 0;
}
/*
* Convert DOS access/share flags into Win32 share mode parameter.
*/
switch(dosAccessShare & 0x70)
{
case OF_SHARE_EXCLUSIVE:
winSharing = 0;
break;
case OF_SHARE_DENY_WRITE:
winSharing = FILE_SHARE_READ;
break;
case OF_SHARE_DENY_READ:
winSharing = FILE_SHARE_WRITE;
break;
case OF_SHARE_DENY_NONE:
case OF_SHARE_COMPAT:
default:
winSharing = FILE_SHARE_READ | FILE_SHARE_WRITE;
}
/*
* FIXME: Bit (dosAccessShare & 0x80) represents inheritance.
* What to do with this bit?
* FIXME: Bits in the high byte of dosAccessShare are not supported.
* See both function 0x6c and subfunction 0x6c of function 0x71 for
* definition of these bits.
*/
/*
* Convert DOS create attributes into Win32 flags and attributes parameter.
*/
if (winMode == OPEN_EXISTING || winMode == TRUNCATE_EXISTING)
{
winAttributes = 0;
}
else
{
WORD dosAttributes = CX_reg(context);
if (dosAttributes & FA_LABEL)
{
/*
* Application tried to create volume label entry.
* This is difficult to support so we do not allow it.
*
* FIXME: If volume does not already have a label,
* this function is supposed to succeed.
*/
SetLastError( ERROR_ACCESS_DENIED );
return TRUE;
}
winAttributes = dosAttributes &
(FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN |
FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_ARCHIVE);
}
/*
* Open the file.
*/
MultiByteToWideChar(CP_OEMCP, 0, pathA, -1, pathW, MAX_PATH);
winHandle = CreateFileW( pathW, winAccess, winSharing, NULL, winMode, winAttributes, 0 );
/* DOS allows opening files on a CDROM R/W */
if( winHandle == INVALID_HANDLE_VALUE &&
(GetLastError() == ERROR_WRITE_PROTECT ||
GetLastError() == ERROR_ACCESS_DENIED)) {
winHandle = CreateFileW( pathW, winAccess & ~GENERIC_WRITE,
winSharing, NULL, winMode, winAttributes, 0 );
}
if (winHandle == INVALID_HANDLE_VALUE)
return FALSE;
/*
* Determine DOS file status.
*
* 1 = file opened
* 2 = file created
* 3 = file replaced
*/
switch(winMode)
{
case OPEN_EXISTING:
dosStatus = 1;
break;
case TRUNCATE_EXISTING:
dosStatus = 3;
break;
case CREATE_NEW:
dosStatus = 2;
break;
case OPEN_ALWAYS:
dosStatus = (GetLastError() == ERROR_ALREADY_EXISTS) ? 1 : 2;
break;
case CREATE_ALWAYS:
dosStatus = (GetLastError() == ERROR_ALREADY_EXISTS) ? 3 : 2;
break;
default:
dosStatus = 0;
}
/*
* Return DOS file handle and DOS status.
*/
SET_AX( context, Win32HandleToDosFileHandle(winHandle) );
if (returnStatus)
SET_CX( context, dosStatus );
TRACE( "CreateFile finished: handle=%d, status=%d.\n",
AX_reg(context), dosStatus );
return TRUE;
}
/***********************************************************************
* INT21_GetCurrentDTA
*/
static BYTE *INT21_GetCurrentDTA( CONTEXT *context )
{
TDB *pTask = GlobalLock16(GetCurrentTask());
/* FIXME: This assumes DTA was set correctly! */
return CTX_SEG_OFF_TO_LIN( context, SELECTOROF(pTask->dta),
OFFSETOF(pTask->dta) );
}
/***********************************************************************
* INT21_OpenFileUsingFCB
*
* Handler for function 0x0f.
*
* PARAMS
* DX:DX [I/O] File control block (FCB or XFCB) of unopened file
*
* RETURNS (in AL)
* 0x00: successful
* 0xff: failed
*
* NOTES
* Opens a FCB file for read/write in compatibility mode. Upon calling
* the FCB must have the drive_number, file_name, and file_extension
* fields filled and all other bytes cleared.
*/
static void INT21_OpenFileUsingFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
char file_path[16];
char *pos;
HANDLE handle;
HFILE16 hfile16;
BY_HANDLE_FILE_INFORMATION info;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
AL_result = 0;
file_path[0] = 'A' + INT21_MapDrive( fcb->drive_number );
if (AL_result == 0) {
file_path[1] = ':';
pos = &file_path[2];
memcpy(pos, fcb->file_name, 8);
pos[8] = ' ';
pos[9] = '\0';
pos = strchr(pos, ' ');
*pos = '.';
pos++;
memcpy(pos, fcb->file_extension, 3);
pos[3] = ' ';
pos[4] = '\0';
pos = strchr(pos, ' ');
*pos = '\0';
handle = (HANDLE) _lopen(file_path, OF_READWRITE);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("_lopen(\"%s\") failed: INVALID_HANDLE_VALUE\n", file_path);
AL_result = 0xff; /* failed */
} else {
hfile16 = Win32HandleToDosFileHandle(handle);
if (hfile16 == HFILE_ERROR16) {
TRACE("Win32HandleToDosFileHandle(%p) failed: HFILE_ERROR\n", handle);
CloseHandle(handle);
AL_result = 0xff; /* failed */
} else if (hfile16 > 255) {
TRACE("hfile16 (=%d) larger than 255 for \"%s\"\n", hfile16, file_path);
_lclose16(hfile16);
AL_result = 0xff; /* failed */
} else {
if (!GetFileInformationByHandle(handle, &info)) {
TRACE("GetFileInformationByHandle(%d, %p) for \"%s\" failed\n",
hfile16, handle, file_path);
_lclose16(hfile16);
AL_result = 0xff; /* failed */
} else {
fcb->drive_number = file_path[0] - 'A' + 1;
fcb->current_block_number = 0;
fcb->logical_record_size = 128;
fcb->file_size = info.nFileSizeLow;
FileTimeToDosDateTime(&info.ftLastWriteTime,
&fcb->date_of_last_write, &fcb->time_of_last_write);
fcb->file_number = hfile16;
fcb->attributes = 0xc2;
fcb->starting_cluster = 0; /* don't know correct init value */
fcb->sequence_number = 0; /* don't know correct init value */
fcb->file_attributes = info.dwFileAttributes;
/* The following fields are not initialized */
/* by the native function: */
/* unused */
/* record_within_current_block */
/* random_access_record_number */
TRACE("successful opened file \"%s\" as %d (handle %p)\n",
file_path, hfile16, handle);
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
} /* if */
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_CloseFileUsingFCB
*
* Handler for function 0x10.
*
* PARAMS
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0x00: successful
* 0xff: failed
*
* NOTES
* Closes a FCB file.
*/
static void INT21_CloseFileUsingFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
if (_lclose16((HFILE16) fcb->file_number) != 0) {
TRACE("_lclose16(%d) failed\n", fcb->file_number);
AL_result = 0xff; /* failed */
} else {
TRACE("successful closed file %d\n", fcb->file_number);
AL_result = 0x00; /* successful */
} /* if */
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_SequentialReadFromFCB
*
* Handler for function 0x14.
*
* PARAMS
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0: successful
* 1: end of file, no data read
* 2: segment wrap in DTA, no data read (not returned now)
* 3: end of file, partial record read
*
* NOTES
* Reads a record with the size FCB->logical_record_size from the FCB
* to the disk transfer area. The position of the record is specified
* with FCB->current_block_number and FCB->record_within_current_block.
* Then FCB->current_block_number and FCB->record_within_current_block
* are updated to point to the next record. If a partial record is
* read, it is filled with zeros up to the FCB->logical_record_size.
*/
static void INT21_SequentialReadFromFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
HANDLE handle;
DWORD record_number;
DWORD position;
BYTE *disk_transfer_area;
UINT bytes_read;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
handle = DosFileHandleToWin32Handle((HFILE16) fcb->file_number);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("DosFileHandleToWin32Handle(%d) failed: INVALID_HANDLE_VALUE\n",
fcb->file_number);
AL_result = 0x01; /* end of file, no data read */
} else {
record_number = 128 * fcb->current_block_number + fcb->record_within_current_block;
position = SetFilePointer(handle, record_number * fcb->logical_record_size, NULL, 0);
if (position != record_number * fcb->logical_record_size) {
TRACE("seek(%d, %d, 0) failed with %u\n",
fcb->file_number, record_number * fcb->logical_record_size, position);
AL_result = 0x01; /* end of file, no data read */
} else {
disk_transfer_area = INT21_GetCurrentDTA(context);
bytes_read = _lread((HFILE) handle, disk_transfer_area, fcb->logical_record_size);
if (bytes_read != fcb->logical_record_size) {
TRACE("_lread(%d, %p, %d) failed with %d\n",
fcb->file_number, disk_transfer_area, fcb->logical_record_size, bytes_read);
if (bytes_read == 0) {
AL_result = 0x01; /* end of file, no data read */
} else {
memset(&disk_transfer_area[bytes_read], 0, fcb->logical_record_size - bytes_read);
AL_result = 0x03; /* end of file, partial record read */
} /* if */
} else {
TRACE("successful read %d bytes from record %d (position %u) of file %d (handle %p)\n",
bytes_read, record_number, position, fcb->file_number, handle);
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
if (AL_result == 0x00 || AL_result == 0x03) {
if (fcb->record_within_current_block == 127) {
fcb->record_within_current_block = 0;
fcb->current_block_number++;
} else {
fcb->record_within_current_block++;
} /* if */
} /* if */
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_SequentialWriteToFCB
*
* Handler for function 0x15.
*
* PARAMS
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0: successful
* 1: disk full
* 2: segment wrap in DTA (not returned now)
*
* NOTES
* Writes a record with the size FCB->logical_record_size from the disk
* transfer area to the FCB. The position of the record is specified
* with FCB->current_block_number and FCB->record_within_current_block.
* Then FCB->current_block_number and FCB->record_within_current_block
* are updated to point to the next record.
*/
static void INT21_SequentialWriteToFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
HANDLE handle;
DWORD record_number;
DWORD position;
BYTE *disk_transfer_area;
UINT bytes_written;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
handle = DosFileHandleToWin32Handle((HFILE16) fcb->file_number);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("DosFileHandleToWin32Handle(%d) failed: INVALID_HANDLE_VALUE\n",
fcb->file_number);
AL_result = 0x01; /* disk full */
} else {
record_number = 128 * fcb->current_block_number + fcb->record_within_current_block;
position = SetFilePointer(handle, record_number * fcb->logical_record_size, NULL, 0);
if (position != record_number * fcb->logical_record_size) {
TRACE("seek(%d, %d, 0) failed with %u\n",
fcb->file_number, record_number * fcb->logical_record_size, position);
AL_result = 0x01; /* disk full */
} else {
disk_transfer_area = INT21_GetCurrentDTA(context);
bytes_written = _lwrite((HFILE) handle, (LPCSTR)disk_transfer_area, fcb->logical_record_size);
if (bytes_written != fcb->logical_record_size) {
TRACE("_lwrite(%d, %p, %d) failed with %d\n",
fcb->file_number, disk_transfer_area, fcb->logical_record_size, bytes_written);
AL_result = 0x01; /* disk full */
} else {
TRACE("successful written %d bytes from record %d (position %u) of file %d (handle %p)\n",
bytes_written, record_number, position, fcb->file_number, handle);
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
if (AL_result == 0x00) {
if (fcb->record_within_current_block == 127) {
fcb->record_within_current_block = 0;
fcb->current_block_number++;
} else {
fcb->record_within_current_block++;
} /* if */
} /* if */
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_ReadRandomRecordFromFCB
*
* Handler for function 0x21.
*
* PARAMS
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0: successful
* 1: end of file, no data read
* 2: segment wrap in DTA, no data read (not returned now)
* 3: end of file, partial record read
*
* NOTES
* Reads a record with the size FCB->logical_record_size from
* the FCB to the disk transfer area. The position of the record
* is specified with FCB->random_access_record_number. The
* FCB->random_access_record_number is not updated. If a partial record
* is read, it is filled with zeros up to the FCB->logical_record_size.
*/
static void INT21_ReadRandomRecordFromFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
HANDLE handle;
DWORD record_number;
DWORD position;
BYTE *disk_transfer_area;
UINT bytes_read;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
memcpy(&record_number, fcb->random_access_record_number, 4);
handle = DosFileHandleToWin32Handle((HFILE16) fcb->file_number);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("DosFileHandleToWin32Handle(%d) failed: INVALID_HANDLE_VALUE\n",
fcb->file_number);
AL_result = 0x01; /* end of file, no data read */
} else {
position = SetFilePointer(handle, record_number * fcb->logical_record_size, NULL, 0);
if (position != record_number * fcb->logical_record_size) {
TRACE("seek(%d, %d, 0) failed with %u\n",
fcb->file_number, record_number * fcb->logical_record_size, position);
AL_result = 0x01; /* end of file, no data read */
} else {
disk_transfer_area = INT21_GetCurrentDTA(context);
bytes_read = _lread((HFILE) handle, disk_transfer_area, fcb->logical_record_size);
if (bytes_read != fcb->logical_record_size) {
TRACE("_lread(%d, %p, %d) failed with %d\n",
fcb->file_number, disk_transfer_area, fcb->logical_record_size, bytes_read);
if (bytes_read == 0) {
AL_result = 0x01; /* end of file, no data read */
} else {
memset(&disk_transfer_area[bytes_read], 0, fcb->logical_record_size - bytes_read);
AL_result = 0x03; /* end of file, partial record read */
} /* if */
} else {
TRACE("successful read %d bytes from record %d (position %u) of file %d (handle %p)\n",
bytes_read, record_number, position, fcb->file_number, handle);
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
fcb->current_block_number = record_number / 128;
fcb->record_within_current_block = record_number % 128;
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_WriteRandomRecordToFCB
*
* Handler for function 0x22.
*
* PARAMS
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0: successful
* 1: disk full
* 2: segment wrap in DTA (not returned now)
*
* NOTES
* Writes a record with the size FCB->logical_record_size from
* the disk transfer area to the FCB. The position of the record
* is specified with FCB->random_access_record_number. The
* FCB->random_access_record_number is not updated.
*/
static void INT21_WriteRandomRecordToFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
HANDLE handle;
DWORD record_number;
DWORD position;
BYTE *disk_transfer_area;
UINT bytes_written;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
memcpy(&record_number, fcb->random_access_record_number, 4);
handle = DosFileHandleToWin32Handle((HFILE16) fcb->file_number);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("DosFileHandleToWin32Handle(%d) failed: INVALID_HANDLE_VALUE\n",
fcb->file_number);
AL_result = 0x01; /* disk full */
} else {
position = SetFilePointer(handle, record_number * fcb->logical_record_size, NULL, 0);
if (position != record_number * fcb->logical_record_size) {
TRACE("seek(%d, %d, 0) failed with %u\n",
fcb->file_number, record_number * fcb->logical_record_size, position);
AL_result = 0x01; /* disk full */
} else {
disk_transfer_area = INT21_GetCurrentDTA(context);
bytes_written = _lwrite((HFILE) handle, (LPCSTR)disk_transfer_area, fcb->logical_record_size);
if (bytes_written != fcb->logical_record_size) {
TRACE("_lwrite(%d, %p, %d) failed with %d\n",
fcb->file_number, disk_transfer_area, fcb->logical_record_size, bytes_written);
AL_result = 0x01; /* disk full */
} else {
TRACE("successful written %d bytes from record %d (position %u) of file %d (handle %p)\n",
bytes_written, record_number, position, fcb->file_number, handle);
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
fcb->current_block_number = record_number / 128;
fcb->record_within_current_block = record_number % 128;
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_RandomBlockReadFromFCB
*
* Handler for function 0x27.
*
* PARAMS
* CX [I/O] Number of records to read
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0: successful
* 1: end of file, no data read
* 2: segment wrap in DTA, no data read (not returned now)
* 3: end of file, partial record read
*
* NOTES
* Reads several records with the size FCB->logical_record_size from
* the FCB to the disk transfer area. The number of records to be
* read is specified in the CX register. The position of the first
* record is specified with FCB->random_access_record_number. The
* FCB->random_access_record_number, the FCB->current_block_number
* and FCB->record_within_current_block are updated to point to the
* next record after the records read. If a partial record is read,
* it is filled with zeros up to the FCB->logical_record_size. The
* CX register is set to the number of successfully read records.
*/
static void INT21_RandomBlockReadFromFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
HANDLE handle;
DWORD record_number;
DWORD position;
BYTE *disk_transfer_area;
UINT records_requested;
UINT bytes_requested;
UINT bytes_read;
UINT records_read;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
memcpy(&record_number, fcb->random_access_record_number, 4);
handle = DosFileHandleToWin32Handle((HFILE16) fcb->file_number);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("DosFileHandleToWin32Handle(%d) failed: INVALID_HANDLE_VALUE\n",
fcb->file_number);
records_read = 0;
AL_result = 0x01; /* end of file, no data read */
} else {
position = SetFilePointer(handle, record_number * fcb->logical_record_size, NULL, 0);
if (position != record_number * fcb->logical_record_size) {
TRACE("seek(%d, %d, 0) failed with %u\n",
fcb->file_number, record_number * fcb->logical_record_size, position);
records_read = 0;
AL_result = 0x01; /* end of file, no data read */
} else {
disk_transfer_area = INT21_GetCurrentDTA(context);
records_requested = CX_reg(context);
bytes_requested = records_requested * fcb->logical_record_size;
bytes_read = _lread((HFILE) handle, disk_transfer_area, bytes_requested);
if (bytes_read != bytes_requested) {
TRACE("_lread(%d, %p, %d) failed with %d\n",
fcb->file_number, disk_transfer_area, bytes_requested, bytes_read);
records_read = bytes_read / fcb->logical_record_size;
if (bytes_read % fcb->logical_record_size == 0) {
AL_result = 0x01; /* end of file, no data read */
} else {
records_read++;
memset(&disk_transfer_area[bytes_read], 0, records_read * fcb->logical_record_size - bytes_read);
AL_result = 0x03; /* end of file, partial record read */
} /* if */
} else {
TRACE("successful read %d bytes from record %d (position %u) of file %d (handle %p)\n",
bytes_read, record_number, position, fcb->file_number, handle);
records_read = records_requested;
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
record_number += records_read;
memcpy(fcb->random_access_record_number, &record_number, 4);
fcb->current_block_number = record_number / 128;
fcb->record_within_current_block = record_number % 128;
SET_CX(context, records_read);
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_RandomBlockWriteToFCB
*
* Handler for function 0x28.
*
* PARAMS
* CX [I/O] Number of records to write
* DX:DX [I/O] File control block (FCB or XFCB) of open file
*
* RETURNS (in AL)
* 0: successful
* 1: disk full
* 2: segment wrap in DTA (not returned now)
*
* NOTES
* Writes several records with the size FCB->logical_record_size from
* the disk transfer area to the FCB. The number of records to be
* written is specified in the CX register. The position of the first
* record is specified with FCB->random_access_record_number. The
* FCB->random_access_record_number, the FCB->current_block_number
* and FCB->record_within_current_block are updated to point to the
* next record after the records written. The CX register is set to
* the number of successfully written records.
*/
static void INT21_RandomBlockWriteToFCB( CONTEXT *context )
{
struct FCB *fcb;
struct XFCB *xfcb;
HANDLE handle;
DWORD record_number;
DWORD position;
BYTE *disk_transfer_area;
UINT records_requested;
UINT bytes_requested;
UINT bytes_written;
UINT records_written;
BYTE AL_result;
fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
if (fcb->drive_number == 0xff) {
xfcb = (struct XFCB *) fcb;
fcb = (struct FCB *) xfcb->fcb;
} /* if */
memcpy(&record_number, fcb->random_access_record_number, 4);
handle = DosFileHandleToWin32Handle((HFILE16) fcb->file_number);
if (handle == INVALID_HANDLE_VALUE) {
TRACE("DosFileHandleToWin32Handle(%d) failed: INVALID_HANDLE_VALUE\n",
fcb->file_number);
records_written = 0;
AL_result = 0x01; /* disk full */
} else {
position = SetFilePointer(handle, record_number * fcb->logical_record_size, NULL, 0);
if (position != record_number * fcb->logical_record_size) {
TRACE("seek(%d, %d, 0) failed with %u\n",
fcb->file_number, record_number * fcb->logical_record_size, position);
records_written = 0;
AL_result = 0x01; /* disk full */
} else {
disk_transfer_area = INT21_GetCurrentDTA(context);
records_requested = CX_reg(context);
bytes_requested = records_requested * fcb->logical_record_size;
bytes_written = _lwrite((HFILE) handle, (LPCSTR)disk_transfer_area, bytes_requested);
if (bytes_written != bytes_requested) {
TRACE("_lwrite(%d, %p, %d) failed with %d\n",
fcb->file_number, disk_transfer_area, bytes_requested, bytes_written);
records_written = bytes_written / fcb->logical_record_size;
AL_result = 0x01; /* disk full */
} else {
TRACE("successful write %d bytes from record %d (position %u) of file %d (handle %p)\n",
bytes_written, record_number, position, fcb->file_number, handle);
records_written = records_requested;
AL_result = 0x00; /* successful */
} /* if */
} /* if */
} /* if */
record_number += records_written;
memcpy(fcb->random_access_record_number, &record_number, 4);
fcb->current_block_number = record_number / 128;
fcb->record_within_current_block = record_number % 128;
SET_CX(context, records_written);
SET_AL(context, AL_result);
}
/***********************************************************************
* INT21_CreateDirectory
*
* Handler for:
* - function 0x39
* - subfunction 0x39 of function 0x71
* - subfunction 0xff of function 0x43 (CL == 0x39)
*/
static BOOL INT21_CreateDirectory( CONTEXT *context )
{
WCHAR dirW[MAX_PATH];
char *dirA = CTX_SEG_OFF_TO_LIN(context,
context->SegDs,
context->Edx);
TRACE( "CREATE DIRECTORY %s\n", dirA );
MultiByteToWideChar(CP_OEMCP, 0, dirA, -1, dirW, MAX_PATH);
if (CreateDirectoryW(dirW, NULL))
return TRUE;
/*
* FIXME: CreateDirectory's LastErrors will clash with the ones
* used by DOS. AH=39 only returns 3 (path not found) and
* 5 (access denied), while CreateDirectory return several
* ones. Remap some of them. -Marcus
*/
switch (GetLastError())
{
case ERROR_ALREADY_EXISTS:
case ERROR_FILENAME_EXCED_RANGE:
case ERROR_DISK_FULL:
SetLastError(ERROR_ACCESS_DENIED);
break;
default:
break;
}
return FALSE;
}
/***********************************************************************
* INT21_ExtendedCountryInformation
*
* Handler for function 0x65.
*/
static void INT21_ExtendedCountryInformation( CONTEXT *context )
{
BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegEs, context->Edi );
BYTE buffsize = CX_reg (context);
TRACE( "GET EXTENDED COUNTRY INFORMATION, subfunction %02x\n",
AL_reg(context) );
/*
* Check subfunctions that are passed country and code page.
*/
if (AL_reg(context) >= 0x01 && AL_reg(context) <= 0x07)
{
WORD country = DX_reg(context);
WORD codepage = BX_reg(context);
if (country != 0xffff && country != INT21_GetSystemCountryCode())
FIXME( "Requested info on non-default country %04x\n", country );
if (codepage != 0xffff && codepage != GetOEMCP())
FIXME( "Requested info on non-default code page %04x\n", codepage );
}
switch (AL_reg(context)) {
case 0x00: /* SET GENERAL INTERNATIONALIZATION INFO */
INT_BARF( context, 0x21 );
SET_CFLAG( context );
break;
case 0x01: /* GET GENERAL INTERNATIONALIZATION INFO */
TRACE( "Get general internationalization info\n" );
dataptr[0] = 0x01; /* Info ID */
*(WORD*)(dataptr+1) = 38; /* Size of the following info */
*(WORD*)(dataptr+3) = INT21_GetSystemCountryCode(); /* Country ID */
*(WORD*)(dataptr+5) = GetOEMCP(); /* Code page */
/* FIXME: fill buffer partially up to buffsize bytes*/
if (buffsize >= 0x29){
INT21_FillCountryInformation( dataptr + 7 );
SET_CX( context, 0x29 ); /* Size of returned info */
}else{
SET_CX( context, 0x07 ); /* Size of returned info */
}
break;
case 0x02: /* GET POINTER TO UPPERCASE TABLE */
case 0x04: /* GET POINTER TO FILENAME UPPERCASE TABLE */
TRACE( "Get pointer to uppercase table\n" );
dataptr[0] = AL_reg(context); /* Info ID */
*(DWORD*)(dataptr+1) = MAKESEGPTR( INT21_GetHeapSelector( context ),
offsetof(INT21_HEAP, uppercase_size) );
SET_CX( context, 5 ); /* Size of returned info */
break;
case 0x03: /* GET POINTER TO LOWERCASE TABLE */
TRACE( "Get pointer to lowercase table\n" );
dataptr[0] = 0x03; /* Info ID */
*(DWORD*)(dataptr+1) = MAKESEGPTR( INT21_GetHeapSelector( context ),
offsetof(INT21_HEAP, lowercase_size) );
SET_CX( context, 5 ); /* Size of returned info */
break;
case 0x05: /* GET POINTER TO FILENAME TERMINATOR TABLE */
TRACE("Get pointer to filename terminator table\n");
dataptr[0] = 0x05; /* Info ID */
*(DWORD*)(dataptr+1) = MAKESEGPTR( INT21_GetHeapSelector( context ),
offsetof(INT21_HEAP, filename_size) );
SET_CX( context, 5 ); /* Size of returned info */
break;
case 0x06: /* GET POINTER TO COLLATING SEQUENCE TABLE */
TRACE("Get pointer to collating sequence table\n");
dataptr[0] = 0x06; /* Info ID */
*(DWORD*)(dataptr+1) = MAKESEGPTR( INT21_GetHeapSelector( context ),
offsetof(INT21_HEAP, collating_size) );
SET_CX( context, 5 ); /* Size of returned info */
break;
case 0x07: /* GET POINTER TO DBCS LEAD BYTE TABLE */
TRACE("Get pointer to DBCS lead byte table\n");
dataptr[0] = 0x07; /* Info ID */
*(DWORD*)(dataptr+1) = MAKESEGPTR( INT21_GetHeapSelector( context ),
offsetof(INT21_HEAP, dbcs_size) );
SET_CX( context, 5 ); /* Size of returned info */
break;
case 0x20: /* CAPITALIZE CHARACTER */
case 0xa0: /* CAPITALIZE FILENAME CHARACTER */
TRACE("Convert char to uppercase\n");
SET_DL( context, toupper(DL_reg(context)) );
break;
case 0x21: /* CAPITALIZE STRING */
case 0xa1: /* CAPITALIZE COUNTED FILENAME STRING */
TRACE("Convert string to uppercase with length\n");
{
char *ptr = CTX_SEG_OFF_TO_LIN( context, context->SegDs,
context->Edx );
WORD len = CX_reg(context);
while (len--) { *ptr = toupper(*ptr); ptr++; }
}
break;
case 0x22: /* CAPITALIZE ASCIIZ STRING */
case 0xa2: /* CAPITALIZE ASCIIZ FILENAME */
TRACE("Convert ASCIIZ string to uppercase\n");
{
char *p = CTX_SEG_OFF_TO_LIN( context, context->SegDs, context->Edx );
for ( ; *p; p++) *p = toupper(*p);
}
break;
case 0x23: /* DETERMINE IF CHARACTER REPRESENTS YES/NO RESPONSE */
INT_BARF( context, 0x21 );
SET_CFLAG( context );
break;
default:
INT_BARF( context, 0x21 );
SET_CFLAG(context);
break;
}
}
/***********************************************************************
* INT21_FileAttributes
*
* Handler for:
* - function 0x43
* - subfunction 0x43 of function 0x71
*/
static BOOL INT21_FileAttributes( CONTEXT *context,
BYTE subfunction,
BOOL islong )
{
WCHAR fileW[MAX_PATH];
char *fileA = CTX_SEG_OFF_TO_LIN(context,
context->SegDs,
context->Edx);
HANDLE handle;
BOOL status;
FILETIME filetime;
DWORD result;
WORD date, time;
int len;
switch (subfunction)
{
case 0x00: /* GET FILE ATTRIBUTES */
TRACE( "GET FILE ATTRIBUTES for %s\n", fileA );
len = MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
/* Winbench 96 Disk Test fails if we don't complain
* about a filename that ends in \
*/
if (!len || (fileW[len-1] == '/') || (fileW[len-1] == '\\'))
return FALSE;
result = GetFileAttributesW( fileW );
if (result == INVALID_FILE_ATTRIBUTES)
return FALSE;
else
{
SET_CX( context, (WORD)result );
if (!islong)
SET_AX( context, (WORD)result ); /* DR DOS */
}
break;
case 0x01: /* SET FILE ATTRIBUTES */
TRACE( "SET FILE ATTRIBUTES 0x%02x for %s\n",
CX_reg(context), fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
if (!SetFileAttributesW( fileW, CX_reg(context) ))
return FALSE;
break;
case 0x02: /* GET COMPRESSED FILE SIZE */
TRACE( "GET COMPRESSED FILE SIZE for %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
result = GetCompressedFileSizeW( fileW, NULL );
if (result == INVALID_FILE_SIZE)
return FALSE;
else
{
SET_AX( context, LOWORD(result) );
SET_DX( context, HIWORD(result) );
}
break;
case 0x03: /* SET FILE LAST-WRITTEN DATE AND TIME */
if (!islong)
INT_BARF( context, 0x21 );
else
{
TRACE( "SET FILE LAST-WRITTEN DATE AND TIME, file %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
handle = CreateFileW( fileW, GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
DosDateTimeToFileTime( DI_reg(context),
CX_reg(context),
&filetime );
status = SetFileTime( handle, NULL, NULL, &filetime );
CloseHandle( handle );
return status;
}
break;
case 0x04: /* GET FILE LAST-WRITTEN DATE AND TIME */
if (!islong)
INT_BARF( context, 0x21 );
else
{
TRACE( "GET FILE LAST-WRITTEN DATE AND TIME, file %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
handle = CreateFileW( fileW, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
status = GetFileTime( handle, NULL, NULL, &filetime );
if (status)
{
FileTimeToDosDateTime( &filetime, &date, &time );
SET_DI( context, date );
SET_CX( context, time );
}
CloseHandle( handle );
return status;
}
break;
case 0x05: /* SET FILE LAST ACCESS DATE */
if (!islong)
INT_BARF( context, 0x21 );
else
{
TRACE( "SET FILE LAST ACCESS DATE, file %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
handle = CreateFileW( fileW, GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
DosDateTimeToFileTime( DI_reg(context),
0,
&filetime );
status = SetFileTime( handle, NULL, &filetime, NULL );
CloseHandle( handle );
return status;
}
break;
case 0x06: /* GET FILE LAST ACCESS DATE */
if (!islong)
INT_BARF( context, 0x21 );
else
{
TRACE( "GET FILE LAST ACCESS DATE, file %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
handle = CreateFileW( fileW, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
status = GetFileTime( handle, NULL, &filetime, NULL );
if (status)
{
FileTimeToDosDateTime( &filetime, &date, NULL );
SET_DI( context, date );
}
CloseHandle( handle );
return status;
}
break;
case 0x07: /* SET FILE CREATION DATE AND TIME */
if (!islong)
INT_BARF( context, 0x21 );
else
{
TRACE( "SET FILE CREATION DATE AND TIME, file %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
handle = CreateFileW( fileW, GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
/*
* FIXME: SI has number of 10-millisecond units past time in CX.
*/
DosDateTimeToFileTime( DI_reg(context),
CX_reg(context),
&filetime );
status = SetFileTime( handle, &filetime, NULL, NULL );
CloseHandle( handle );
return status;
}
break;
case 0x08: /* GET FILE CREATION DATE AND TIME */
if (!islong)
INT_BARF( context, 0x21 );
else
{
TRACE( "GET FILE CREATION DATE AND TIME, file %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
handle = CreateFileW( fileW, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
status = GetFileTime( handle, &filetime, NULL, NULL );
if (status)
{
FileTimeToDosDateTime( &filetime, &date, &time );
SET_DI( context, date );
SET_CX( context, time );
/*
* FIXME: SI has number of 10-millisecond units past
* time in CX.
*/
SET_SI( context, 0 );
}
CloseHandle(handle);
return status;
}
break;
case 0xff: /* EXTENDED-LENGTH FILENAME OPERATIONS */
if (islong || context->Ebp != 0x5053)
INT_BARF( context, 0x21 );
else
{
switch(CL_reg(context))
{
case 0x39:
if (!INT21_CreateDirectory( context ))
return FALSE;
break;
case 0x56:
if (!INT21_RenameFile( context ))
return FALSE;
break;
default:
INT_BARF( context, 0x21 );
}
}
break;
default:
INT_BARF( context, 0x21 );
}
return TRUE;
}
/***********************************************************************
* INT21_FileDateTime
*
* Handler for function 0x57.
*/
static BOOL INT21_FileDateTime( CONTEXT *context )
{
HANDLE handle = DosFileHandleToWin32Handle(BX_reg(context));
FILETIME filetime;
WORD date, time;
switch (AL_reg(context)) {
case 0x00: /* Get last-written stamp */
TRACE( "GET FILE LAST-WRITTEN DATE AND TIME, handle %d\n",
BX_reg(context) );
{
if (!GetFileTime( handle, NULL, NULL, &filetime ))
return FALSE;
FileTimeToDosDateTime( &filetime, &date, &time );
SET_DX( context, date );
SET_CX( context, time );
break;
}
case 0x01: /* Set last-written stamp */
TRACE( "SET FILE LAST-WRITTEN DATE AND TIME, handle %d\n",
BX_reg(context) );
{
DosDateTimeToFileTime( DX_reg(context),
CX_reg(context),
&filetime );
if (!SetFileTime( handle, NULL, NULL, &filetime ))
return FALSE;
break;
}
case 0x04: /* Get last access stamp, DOS 7 */
TRACE( "GET FILE LAST ACCESS DATE AND TIME, handle %d\n",
BX_reg(context) );
{
if (!GetFileTime( handle, NULL, &filetime, NULL ))
return FALSE;
FileTimeToDosDateTime( &filetime, &date, &time );
SET_DX( context, date );
SET_CX( context, time );
break;
}
case 0x05: /* Set last access stamp, DOS 7 */
TRACE( "SET FILE LAST ACCESS DATE AND TIME, handle %d\n",
BX_reg(context) );
{
DosDateTimeToFileTime( DX_reg(context),
CX_reg(context),
&filetime );
if (!SetFileTime( handle, NULL, &filetime, NULL ))
return FALSE;
break;
}
case 0x06: /* Get creation stamp, DOS 7 */
TRACE( "GET FILE CREATION DATE AND TIME, handle %d\n",
BX_reg(context) );
{
if (!GetFileTime( handle, &filetime, NULL, NULL ))
return FALSE;
FileTimeToDosDateTime( &filetime, &date, &time );
SET_DX( context, date );
SET_CX( context, time );
/*
* FIXME: SI has number of 10-millisecond units past time in CX.
*/
SET_SI( context, 0 );
break;
}
case 0x07: /* Set creation stamp, DOS 7 */
TRACE( "SET FILE CREATION DATE AND TIME, handle %d\n",
BX_reg(context) );
{
/*
* FIXME: SI has number of 10-millisecond units past time in CX.
*/
DosDateTimeToFileTime( DX_reg(context),
CX_reg(context),
&filetime );
if (!SetFileTime( handle, &filetime, NULL, NULL ))
return FALSE;
break;
}
default:
INT_BARF( context, 0x21 );
break;
}
return TRUE;
}
/***********************************************************************
* INT21_GetPSP
*
* Handler for functions 0x51 and 0x62.
*/
static void INT21_GetPSP( CONTEXT *context )
{
TRACE( "GET CURRENT PSP ADDRESS (%02x)\n", AH_reg(context) );
SET_BX( context, LOWORD(GetCurrentPDB16()) );
}
static inline void setword( BYTE *ptr, WORD w )
{
ptr[0] = (BYTE)w;
ptr[1] = (BYTE)(w >> 8);
}
static void CreateBPB(int drive, BYTE *data, BOOL16 limited)
/* limited == TRUE is used with INT 0x21/0x440d */
{
/* FIXME: we're forcing some values without checking that those are valid */
if (drive > 1)
{
setword(data, 512);
data[2] = 2;
setword(&data[3], 0);
data[5] = 2;
setword(&data[6], 240);
setword(&data[8], 64000);
data[0x0a] = 0xf8;
setword(&data[0x0b], 40);
setword(&data[0x0d], 56);
setword(&data[0x0f], 2);
setword(&data[0x11], 0);
if (!limited)
{
setword(&data[0x1f], 800);
data[0x21] = 5;
setword(&data[0x22], 1);
}
}
else
{ /* 1.44mb */
setword(data, 512);
data[2] = 2;
setword(&data[3], 0);
data[5] = 2;
setword(&data[6], 240);
setword(&data[8], 2880);
data[0x0a] = 0xf8;
setword(&data[0x0b], 6);
setword(&data[0x0d], 18);
setword(&data[0x0f], 2);
setword(&data[0x11], 0);
if (!limited)
{
setword(&data[0x1f], 80);
data[0x21] = 7;
setword(&data[0x22], 2);
}
}
}
static inline DWORD INT21_Ioctl_CylHeadSect2Lin(DWORD cyl, WORD head, WORD sec, WORD cyl_cnt,
WORD head_cnt, WORD sec_cnt)
{
DWORD res = (cyl * head_cnt*sec_cnt + head * sec_cnt + sec);
return res;
}
/***********************************************************************
* INT21_Ioctl_Block
*
* Handler for block device IOCTLs.
*/
static void INT21_Ioctl_Block( CONTEXT *context )
{
BYTE *dataptr;
BYTE drive = INT21_MapDrive( BL_reg(context) );
WCHAR drivespec[] = {'A', ':', '\\', 0};
UINT drivetype;
drivespec[0] += drive;
drivetype = GetDriveTypeW( drivespec );
RESET_CFLAG(context);
if (drivetype == DRIVE_UNKNOWN || drivetype == DRIVE_NO_ROOT_DIR)
{
TRACE( "IOCTL - SUBFUNCTION %d - INVALID DRIVE %c:\n",
AL_reg(context), 'A' + drive );
SetLastError( ERROR_INVALID_DRIVE );
SET_AX( context, ERROR_INVALID_DRIVE );
SET_CFLAG( context );
return;
}
switch (AL_reg(context))
{
case 0x04: /* READ FROM BLOCK DEVICE CONTROL CHANNEL */
case 0x05: /* WRITE TO BLOCK DEVICE CONTROL CHANNEL */
INT_BARF( context, 0x21 );
break;
case 0x08: /* CHECK IF BLOCK DEVICE REMOVABLE */
TRACE( "IOCTL - CHECK IF BLOCK DEVICE REMOVABLE - %c:\n",
'A' + drive );
if (drivetype == DRIVE_REMOVABLE)
SET_AX( context, 0 ); /* removable */
else
SET_AX( context, 1 ); /* not removable */
break;
case 0x09: /* CHECK IF BLOCK DEVICE REMOTE */
TRACE( "IOCTL - CHECK IF BLOCK DEVICE REMOTE - %c:\n",
'A' + drive );
if (drivetype == DRIVE_REMOTE)
SET_DX( context, (1<<9) | (1<<12) ); /* remote + no direct IO */
else if (drivetype == DRIVE_CDROM)
/* CDROM should be set to remote. If it set the app will
* call int2f to check if it cdrom or remote drive. */
SET_DX( context, (1<<12) );
else if (drivetype == DRIVE_FIXED)
/* This should define if drive support 0x0d, 0x0f and 0x08
* requests. The local fixed drive should do. */
SET_DX( context, (1<<11) );
else
SET_DX( context, 0 ); /* FIXME: use driver attr here */
break;
case 0x0d: /* GENERIC BLOCK DEVICE REQUEST */
/* Get pointer to IOCTL parameter block */
dataptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
switch (CX_reg(context))
{
case 0x0841: /* write logical device track */
TRACE( "GENERIC IOCTL - Write logical device track - %c:\n",
'A' + drive);
{
WORD head = *(WORD *)(dataptr+1);
WORD cyl = *(WORD *)(dataptr+3);
WORD sect = *(WORD *)(dataptr+5);
WORD nrsect = *(WORD *)(dataptr+7);
BYTE *data = CTX_SEG_OFF_TO_LIN(context, *(WORD *)(dataptr+11), *(WORD *)(dataptr+9));
WORD cyl_cnt, head_cnt, sec_cnt;
/* FIXME: we're faking some values here */
if (drive > 1)
{
/* cyl_cnt = 0x300;
head_cnt = 16;
sec_cnt = 255; */
SET_AX( context, ERROR_WRITE_FAULT );
SET_CFLAG(context);
break;
}
else
{ /* floppy */
cyl_cnt = 80;
head_cnt = 2;
sec_cnt = 18;
}
if (!DOSVM_RawWrite(drive, INT21_Ioctl_CylHeadSect2Lin(cyl, head, sect, cyl_cnt, head_cnt, sec_cnt), nrsect, data, FALSE))
{
SET_AX( context, ERROR_WRITE_FAULT );
SET_CFLAG(context);
}
}
break;
case 0x084a: /* lock logical volume */
TRACE( "GENERIC IOCTL - Lock logical volume, level %d mode %d - %c:\n",
BH_reg(context), DX_reg(context), 'A' + drive );
break;
case 0x0860: /* get device parameters */
/* FIXME: we're faking some values here */
/* used by w4wgrp's winfile */
memset(dataptr, 0, 0x20); /* DOS 6.22 uses 0x20 bytes */
dataptr[0] = 0x04;
dataptr[6] = 0; /* media type */
if (drive > 1)
{
dataptr[1] = 0x05; /* fixed disk */
setword(&dataptr[2], 0x01); /* non removable */
setword(&dataptr[4], 0x300); /* # of cylinders */
}
else
{
dataptr[1] = 0x07; /* block dev, floppy */
setword(&dataptr[2], 0x02); /* removable */
setword(&dataptr[4], 80); /* # of cylinders */
}
CreateBPB(drive, &dataptr[7], TRUE);
RESET_CFLAG(context);
break;
case 0x0861: /* read logical device track */
TRACE( "GENERIC IOCTL - Read logical device track - %c:\n",
'A' + drive);
{
WORD head = *(WORD *)(dataptr+1);
WORD cyl = *(WORD *)(dataptr+3);
WORD sect = *(WORD *)(dataptr+5);
WORD nrsect = *(WORD *)(dataptr+7);
BYTE *data = CTX_SEG_OFF_TO_LIN(context, *(WORD *)(dataptr+11), *(WORD *)(dataptr+9));
WORD cyl_cnt, head_cnt, sec_cnt;
/* FIXME: we're faking some values here */
if (drive > 1)
{
cyl_cnt = 0x300;
head_cnt = 16;
sec_cnt = 255;
}
else
{ /* floppy */
cyl_cnt = 80;
head_cnt = 2;
sec_cnt = 18;
}
if (!DOSVM_RawRead(drive, INT21_Ioctl_CylHeadSect2Lin(cyl, head, sect, cyl_cnt, head_cnt, sec_cnt), nrsect, data, FALSE))
{
SET_AX( context, ERROR_READ_FAULT );
SET_CFLAG(context);
}
}
break;
case 0x0866: /* get volume serial number */
{
WCHAR label[12],fsname[9];
DWORD serial;
TRACE( "GENERIC IOCTL - Get media id - %c:\n",
'A' + drive );
GetVolumeInformationW(drivespec, label, 12, &serial, NULL, NULL, fsname, 9);
*(WORD*)dataptr = 0;
memcpy(dataptr+2,&serial,4);
WideCharToMultiByte(CP_OEMCP, 0, label, 11, (LPSTR)dataptr + 6, 11, NULL, NULL);
WideCharToMultiByte(CP_OEMCP, 0, fsname, 8, (LPSTR)dataptr + 17, 8, NULL, NULL);
}
break;
case 0x086a: /* unlock logical volume */
TRACE( "GENERIC IOCTL - Logical volume unlocked - %c:\n",
'A' + drive );
break;
case 0x086f: /* get drive map information */
memset(dataptr+1, '\0', dataptr[0]-1);
dataptr[1] = dataptr[0];
dataptr[2] = 0x07; /* protected mode driver; no eject; no notification */
dataptr[3] = 0xFF; /* no physical drive */
break;
case 0x0872:
/* Trial and error implementation */
SET_AX( context, drivetype == DRIVE_UNKNOWN ? 0x0f : 0x01 );
SET_CFLAG(context); /* Seems to be set all the time */
break;
default:
INT_BARF( context, 0x21 );
}
break;
case 0x0e: /* GET LOGICAL DRIVE MAP */
TRACE( "IOCTL - GET LOGICAL DRIVE MAP - %c:\n",
'A' + drive );
/* FIXME: this is not correct if drive has mappings */
SET_AL( context, 0 ); /* drive has no mapping */
break;
case 0x0f: /* SET LOGICAL DRIVE MAP */
TRACE("IOCTL - SET LOGICAL DRIVE MAP for drive %s\n",
INT21_DriveName( BL_reg(context)));
/* FIXME: as of today, we don't support logical drive mapping... */
SET_AL( context, 0 );
break;
case 0x11: /* QUERY GENERIC IOCTL CAPABILITY */
default:
INT_BARF( context, 0x21 );
}
}
/***********************************************************************
* INT21_Ioctl_Char
*
* Handler for character device IOCTLs.
*/
static void INT21_Ioctl_Char( CONTEXT *context )
{
HANDLE handle = DosFileHandleToWin32Handle(BX_reg(context));
BOOL IsConsoleIOHandle = VerifyConsoleIoHandle( handle );
switch (AL_reg(context))
{
case 0x00: /* GET DEVICE INFORMATION */
TRACE( "IOCTL - GET DEVICE INFORMATION - %d\n", BX_reg(context) );
if (IsConsoleIOHandle || GetFileType(handle) == FILE_TYPE_CHAR)
{
/*
* Returns attribute word in DX:
* Bit 14 - Device driver can process IOCTL requests.
* Bit 13 - Output until busy supported.
* Bit 11 - Driver supports OPEN/CLOSE calls.
* Bit 8 - Unknown.
* Bit 7 - Set (indicates device).
* Bit 6 - EOF on input.
* Bit 5 - Raw (binary) mode.
* Bit 4 - Device is special (uses int29).
* Bit 3 - Clock device.
* Bit 2 - NUL device.
* Bit 1 - Console output device.
* Bit 0 - Console input device.
*/
SET_DX( context, IsConsoleIOHandle ? 0x80c3 : 0x80c0 /* FIXME */ );
}
else
{
/*
* Returns attribute word in DX:
* Bit 15 - File is remote.
* Bit 14 - Don't set file date/time on closing.
* Bit 11 - Media not removable.
* Bit 8 - Generate int24 if no disk space on write
* or read past end of file
* Bit 7 - Clear (indicates file).
* Bit 6 - File has not been written.
* Bit 5..0 - Drive number (0=A:,...)
*
* FIXME: Should check if file is on remote or removable drive.
* FIXME: Should use drive file is located on (and not current).
*/
SET_DX( context, 0x0140 + INT21_GetCurrentDrive() );
}
break;
case 0x0a: /* CHECK IF HANDLE IS REMOTE */
TRACE( "IOCTL - CHECK IF HANDLE IS REMOTE - %d\n", BX_reg(context) );
/*
* Returns attribute word in DX:
* Bit 15 - Set if remote.
* Bit 14 - Set if date/time not set on close.
*
* FIXME: Should check if file is on remote drive.
*/
SET_DX( context, 0 );
break;
case 0x01: /* SET DEVICE INFORMATION */
case 0x02: /* READ FROM CHARACTER DEVICE CONTROL CHANNEL */
case 0x03: /* WRITE TO CHARACTER DEVICE CONTROL CHANNEL */
case 0x06: /* GET INPUT STATUS */
case 0x07: /* GET OUTPUT STATUS */
case 0x0c: /* GENERIC CHARACTER DEVICE REQUEST */
case 0x10: /* QUERY GENERIC IOCTL CAPABILITY */
default:
INT_BARF( context, 0x21 );
break;
}
}
/***********************************************************************
* INT21_Ioctl
*
* Handler for function 0x44.
*/
static void INT21_Ioctl( CONTEXT *context )
{
switch (AL_reg(context))
{
case 0x00:
case 0x01:
case 0x02:
case 0x03:
INT21_Ioctl_Char( context );
break;
case 0x04:
case 0x05:
INT21_Ioctl_Block( context );
break;
case 0x06:
case 0x07:
INT21_Ioctl_Char( context );
break;
case 0x08:
case 0x09:
INT21_Ioctl_Block( context );
break;
case 0x0a:
INT21_Ioctl_Char( context );
break;
case 0x0b: /* SET SHARING RETRY COUNT */
TRACE( "SET SHARING RETRY COUNT: Pause %d, retries %d.\n",
CX_reg(context), DX_reg(context) );
if (!CX_reg(context))
{
SET_AX( context, 1 );
SET_CFLAG( context );
}
else
{
RESET_CFLAG( context );
}
break;
case 0x0c:
INT21_Ioctl_Char( context );
break;
case 0x0d:
case 0x0e:
case 0x0f:
INT21_Ioctl_Block( context );
break;
case 0x10:
INT21_Ioctl_Char( context );
break;
case 0x11:
INT21_Ioctl_Block( context );
break;
case 0x12: /* DR DOS - DETERMINE DOS TYPE (OBSOLETE FUNCTION) */
TRACE( "DR DOS - DETERMINE DOS TYPE (OBSOLETE FUNCTION)\n" );
SET_CFLAG(context); /* Error / This is not DR DOS. */
SET_AX( context, 0x0001 ); /* Invalid function */
break;
case 0x52: /* DR DOS - DETERMINE DOS TYPE */
TRACE( "DR DOS - DETERMINE DOS TYPE\n" );
SET_CFLAG(context); /* Error / This is not DR DOS. */
SET_AX( context, 0x0001 ); /* Invalid function */
break;
case 0xe0: /* Sun PC-NFS API */
TRACE( "Sun PC-NFS API\n" );
/* not installed */
break;
default:
INT_BARF( context, 0x21 );
}
}
/***********************************************************************
* INT21_Fat32
*
* Handler for function 0x73.
*/
static BOOL INT21_Fat32( CONTEXT *context )
{
switch (AL_reg(context))
{
case 0x02: /* FAT32 - GET EXTENDED DPB */
{
BYTE drive = INT21_MapDrive( DL_reg(context) );
WORD *ptr = CTX_SEG_OFF_TO_LIN(context,
context->SegEs, context->Edi);
INT21_DPB *target = (INT21_DPB*)(ptr + 1);
INT21_DPB *source;
TRACE( "FAT32 - GET EXTENDED DPB %d\n", DL_reg(context) );
if ( CX_reg(context) < sizeof(INT21_DPB) + 2 || *ptr < sizeof(INT21_DPB) )
{
SetLastError( ERROR_BAD_LENGTH );
return FALSE;
}
if ( !INT21_FillDrivePB( drive ) )
{
SetLastError( ERROR_INVALID_DRIVE );
return FALSE;
}
source = &INT21_GetHeapPointer()->misc_dpb_list[drive];
*ptr = sizeof(INT21_DPB);
*target = *source;
if (LOWORD(context->Esi) != 0xF1A6)
{
target->driver_header = 0;
target->next = 0;
}
else
{
FIXME( "Caller requested driver and next DPB pointers!\n" );
}
}
break;
case 0x03: /* FAT32 - GET EXTENDED FREE SPACE ON DRIVE */
{
WCHAR dirW[MAX_PATH];
char *dirA = CTX_SEG_OFF_TO_LIN( context,
context->SegDs, context->Edx );
BYTE *data = CTX_SEG_OFF_TO_LIN( context,
context->SegEs, context->Edi );
DWORD cluster_sectors;
DWORD sector_bytes;
DWORD free_clusters;
DWORD total_clusters;
TRACE( "FAT32 - GET EXTENDED FREE SPACE ON DRIVE %s\n", dirA );
MultiByteToWideChar(CP_OEMCP, 0, dirA, -1, dirW, MAX_PATH);
if (CX_reg(context) < 44)
{
SetLastError( ERROR_BAD_LENGTH );
return FALSE;
}
if (!GetDiskFreeSpaceW( dirW, &cluster_sectors, &sector_bytes,
&free_clusters, &total_clusters ))
return FALSE;
*(WORD*) (data + 0) = 44; /* size of structure */
*(WORD*) (data + 2) = 0; /* version */
*(DWORD*)(data + 4) = cluster_sectors;
*(DWORD*)(data + 8) = sector_bytes;
*(DWORD*)(data + 12) = free_clusters;
*(DWORD*)(data + 16) = total_clusters;
/*
* Below we have free/total sectors and
* free/total allocation units without adjustment
* for compression. We fake both using cluster information.
*/
*(DWORD*)(data + 20) = free_clusters * cluster_sectors;
*(DWORD*)(data + 24) = total_clusters * cluster_sectors;
*(DWORD*)(data + 28) = free_clusters;
*(DWORD*)(data + 32) = total_clusters;
/*
* Between (data + 36) and (data + 43) there
* are eight reserved bytes.
*/
}
break;
default:
INT_BARF( context, 0x21 );
}
return TRUE;
}
static void INT21_ConvertFindDataWtoA(WIN32_FIND_DATAA *dataA,
const WIN32_FIND_DATAW *dataW)
{
dataA->dwFileAttributes = dataW->dwFileAttributes;
dataA->ftCreationTime = dataW->ftCreationTime;
dataA->ftLastAccessTime = dataW->ftLastAccessTime;
dataA->ftLastWriteTime = dataW->ftLastWriteTime;
dataA->nFileSizeHigh = dataW->nFileSizeHigh;
dataA->nFileSizeLow = dataW->nFileSizeLow;
WideCharToMultiByte( CP_OEMCP, 0, dataW->cFileName, -1,
dataA->cFileName, sizeof(dataA->cFileName), NULL, NULL );
WideCharToMultiByte( CP_OEMCP, 0, dataW->cAlternateFileName, -1,
dataA->cAlternateFileName, sizeof(dataA->cAlternateFileName), NULL, NULL );
}
/***********************************************************************
* INT21_LongFilename
*
* Handler for function 0x71.
*/
static void INT21_LongFilename( CONTEXT *context )
{
BOOL bSetDOSExtendedError = FALSE;
WCHAR pathW[MAX_PATH];
char* pathA;
switch (AL_reg(context))
{
case 0x0d: /* RESET DRIVE */
INT_BARF( context, 0x21 );
break;
case 0x39: /* LONG FILENAME - MAKE DIRECTORY */
if (!INT21_CreateDirectory( context ))
bSetDOSExtendedError = TRUE;
break;
case 0x3a: /* LONG FILENAME - REMOVE DIRECTORY */
pathA = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
TRACE( "LONG FILENAME - REMOVE DIRECTORY %s\n", pathA);
MultiByteToWideChar(CP_OEMCP, 0, pathA, -1, pathW, MAX_PATH);
if (!RemoveDirectoryW( pathW )) bSetDOSExtendedError = TRUE;
break;
case 0x3b: /* LONG FILENAME - CHANGE DIRECTORY */
if (!INT21_SetCurrentDirectory( context ))
bSetDOSExtendedError = TRUE;
break;
case 0x41: /* LONG FILENAME - DELETE FILE */
pathA = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
TRACE( "LONG FILENAME - DELETE FILE %s\n", pathA );
MultiByteToWideChar(CP_OEMCP, 0, pathA, -1, pathW, MAX_PATH);
if (!DeleteFileW( pathW )) bSetDOSExtendedError = TRUE;
break;
case 0x43: /* LONG FILENAME - EXTENDED GET/SET FILE ATTRIBUTES */
if (!INT21_FileAttributes( context, BL_reg(context), TRUE ))
bSetDOSExtendedError = TRUE;
break;
case 0x47: /* LONG FILENAME - GET CURRENT DIRECTORY */
if (!INT21_GetCurrentDirectory( context, TRUE ))
bSetDOSExtendedError = TRUE;
break;
case 0x4e: /* LONG FILENAME - FIND FIRST MATCHING FILE */
{
HANDLE handle;
HGLOBAL16 h16;
WIN32_FIND_DATAW dataW;
WIN32_FIND_DATAA* dataA;
pathA = CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx);
TRACE(" LONG FILENAME - FIND FIRST MATCHING FILE for %s\n", pathA);
MultiByteToWideChar(CP_OEMCP, 0, pathA, -1, pathW, MAX_PATH);
handle = FindFirstFileW(pathW, &dataW);
dataA = CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi);
if (handle != INVALID_HANDLE_VALUE &&
(h16 = GlobalAlloc16(GMEM_MOVEABLE, sizeof(handle))))
{
HANDLE* ptr = GlobalLock16( h16 );
*ptr = handle;
GlobalUnlock16( h16 );
SET_AX( context, h16 );
INT21_ConvertFindDataWtoA(dataA, &dataW);
}
else
{
if (handle != INVALID_HANDLE_VALUE) FindClose(handle);
SET_AX( context, INVALID_HANDLE_VALUE16);
bSetDOSExtendedError = TRUE;
}
}
break;
case 0x4f: /* LONG FILENAME - FIND NEXT MATCHING FILE */
{
HGLOBAL16 h16 = BX_reg(context);
HANDLE* ptr;
WIN32_FIND_DATAW dataW;
WIN32_FIND_DATAA* dataA;
TRACE("LONG FILENAME - FIND NEXT MATCHING FILE for handle %d\n",
BX_reg(context));
dataA = CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi);
if (h16 != INVALID_HANDLE_VALUE16 && (ptr = GlobalLock16( h16 )))
{
if (!FindNextFileW(*ptr, &dataW)) bSetDOSExtendedError = TRUE;
else INT21_ConvertFindDataWtoA(dataA, &dataW);
GlobalUnlock16( h16 );
}
else
{
SetLastError( ERROR_INVALID_HANDLE );
bSetDOSExtendedError = TRUE;
}
}
break;
case 0x56: /* LONG FILENAME - RENAME FILE */
if (!INT21_RenameFile(context))
bSetDOSExtendedError = TRUE;
break;
case 0x60: /* LONG FILENAME - CONVERT PATH */
{
WCHAR res[MAX_PATH];
switch (CL_reg(context))
{
case 0x00: /* "truename" - Canonicalize path */
/*
* FIXME: This is not 100% equal to 0x01 case,
* if you fix this, fix int21 subfunction 0x60, too.
*/
case 0x01: /* Get short filename or path */
MultiByteToWideChar(CP_OEMCP, 0, CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi), -1, pathW, MAX_PATH);
if (!GetShortPathNameW(pathW, res, 67))
bSetDOSExtendedError = TRUE;
else
{
SET_AX( context, 0 );
WideCharToMultiByte(CP_OEMCP, 0, res, -1,
CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi),
67, NULL, NULL);
}
break;
case 0x02: /* Get canonical long filename or path */
MultiByteToWideChar(CP_OEMCP, 0, CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi), -1, pathW, MAX_PATH);
if (!GetFullPathNameW(pathW, 128, res, NULL))
bSetDOSExtendedError = TRUE;
else
{
SET_AX( context, 0 );
WideCharToMultiByte(CP_OEMCP, 0, res, -1,
CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi),
128, NULL, NULL);
}
break;
default:
FIXME("Unimplemented long file name function:\n");
INT_BARF( context, 0x21 );
SET_CFLAG(context);
SET_AL( context, 0 );
break;
}
}
break;
case 0x6c: /* LONG FILENAME - CREATE OR OPEN FILE */
if (!INT21_CreateFile( context, context->Esi, TRUE,
BX_reg(context), DL_reg(context) ))
bSetDOSExtendedError = TRUE;
break;
case 0xa0: /* LONG FILENAME - GET VOLUME INFORMATION */
{
DWORD filename_len, flags;
WCHAR dstW[8];
pathA = CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx);
TRACE("LONG FILENAME - GET VOLUME INFORMATION for drive having root dir '%s'.\n", pathA);
SET_AX( context, 0 );
MultiByteToWideChar(CP_OEMCP, 0, pathA, -1, pathW, MAX_PATH);
if (!GetVolumeInformationW( pathW, NULL, 0, NULL, &filename_len,
&flags, dstW, 8 ))
{
INT_BARF( context, 0x21 );
SET_CFLAG(context);
break;
}
SET_BX( context, flags | 0x4000 ); /* support for LFN functions */
SET_CX( context, filename_len );
SET_DX( context, MAX_PATH ); /* FIXME: which len if DRIVE_SHORT_NAMES ? */
WideCharToMultiByte(CP_OEMCP, 0, dstW, -1,
CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi),
8, NULL, NULL);
}
break;
case 0xa1: /* LONG FILENAME - "FindClose" - TERMINATE DIRECTORY SEARCH */
{
HGLOBAL16 h16 = BX_reg(context);
HANDLE* ptr;
TRACE("LONG FILENAME - FINDCLOSE for handle %d\n",
BX_reg(context));
if (h16 != INVALID_HANDLE_VALUE16 && (ptr = GlobalLock16( h16 )))
{
if (!FindClose( *ptr )) bSetDOSExtendedError = TRUE;
GlobalUnlock16( h16 );
GlobalFree16( h16 );
}
else
{
SetLastError( ERROR_INVALID_HANDLE );
bSetDOSExtendedError = TRUE;
}
}
break;
case 0xa6: /* LONG FILENAME - GET FILE INFO BY HANDLE */
{
HANDLE handle = DosFileHandleToWin32Handle(BX_reg(context));
BY_HANDLE_FILE_INFORMATION *info =
CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
TRACE( "LONG FILENAME - GET FILE INFO BY HANDLE\n" );
if (!GetFileInformationByHandle(handle, info))
bSetDOSExtendedError = TRUE;
}
break;
case 0xa7: /* LONG FILENAME - CONVERT TIME */
switch (BL_reg(context))
{
case 0x00: /* FILE TIME TO DOS TIME */
{
WORD date, time;
FILETIME *filetime = CTX_SEG_OFF_TO_LIN(context,
context->SegDs,
context->Esi);
TRACE( "LONG FILENAME - FILE TIME TO DOS TIME\n" );
FileTimeToDosDateTime( filetime, &date, &time );
SET_DX( context, date );
SET_CX( context, time );
/*
* FIXME: BH has number of 10-millisecond units
* past time in CX.
*/
SET_BH( context, 0 );
}
break;
case 0x01: /* DOS TIME TO FILE TIME */
{
FILETIME *filetime = CTX_SEG_OFF_TO_LIN(context,
context->SegEs,
context->Edi);
TRACE( "LONG FILENAME - DOS TIME TO FILE TIME\n" );
/*
* FIXME: BH has number of 10-millisecond units
* past time in CX.
*/
DosDateTimeToFileTime( DX_reg(context), CX_reg(context),
filetime );
}
break;
default:
INT_BARF( context, 0x21 );
break;
}
break;
case 0xa8: /* LONG FILENAME - GENERATE SHORT FILENAME */
case 0xa9: /* LONG FILENAME - SERVER CREATE OR OPEN FILE */
case 0xaa: /* LONG FILENAME - SUBST */
default:
FIXME("Unimplemented long file name function:\n");
INT_BARF( context, 0x21 );
SET_CFLAG(context);
SET_AL( context, 0 );
break;
}
if (bSetDOSExtendedError)
{
SET_AX( context, GetLastError() );
SET_CFLAG( context );
}
}
/***********************************************************************
* INT21_RenameFile
*
* Handler for:
* - function 0x56
* - subfunction 0x56 of function 0x71
* - subfunction 0xff of function 0x43 (CL == 0x56)
*/
static BOOL INT21_RenameFile( CONTEXT *context )
{
WCHAR fromW[MAX_PATH];
WCHAR toW[MAX_PATH];
char *fromA = CTX_SEG_OFF_TO_LIN(context,
context->SegDs,context->Edx);
char *toA = CTX_SEG_OFF_TO_LIN(context,
context->SegEs,context->Edi);
TRACE( "RENAME FILE %s to %s\n", fromA, toA );
MultiByteToWideChar(CP_OEMCP, 0, fromA, -1, fromW, MAX_PATH);
MultiByteToWideChar(CP_OEMCP, 0, toA, -1, toW, MAX_PATH);
return MoveFileW( fromW, toW );
}
/***********************************************************************
* INT21_NetworkFunc
*
* Handler for:
* - function 0x5e
*/
static BOOL INT21_NetworkFunc (CONTEXT *context)
{
switch (AL_reg(context))
{
case 0x00: /* Get machine name. */
{
WCHAR dstW[MAX_COMPUTERNAME_LENGTH + 1];
DWORD s = ARRAY_SIZE(dstW);
int len;
char *dst = CTX_SEG_OFF_TO_LIN (context,context->SegDs,context->Edx);
TRACE("getting machine name to %p\n", dst);
if (!GetComputerNameW(dstW, &s) ||
!WideCharToMultiByte(CP_OEMCP, 0, dstW, -1, dst, 16, NULL, NULL))
{
WARN("failed!\n");
SetLastError( ER_NoNetwork );
return TRUE;
}
for (len = strlen(dst); len < 15; len++) dst[len] = ' ';
dst[15] = 0;
SET_CH( context, 1 ); /* Valid */
SET_CL( context, 1 ); /* NETbios number??? */
TRACE("returning %s\n", debugstr_an(dst, 16));
return FALSE;
}
default:
SetLastError( ER_NoNetwork );
return TRUE;
}
}
/******************************************************************
* INT21_GetDiskSerialNumber
*
*/
static int INT21_GetDiskSerialNumber( CONTEXT *context )
{
BYTE *dataptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
WCHAR path[] = {'A',':','\\',0}, label[11];
DWORD serial;
path[0] += INT21_MapDrive(BL_reg(context));
if (!GetVolumeInformationW( path, label, 11, &serial, NULL, NULL, NULL, 0))
{
SetLastError( ERROR_INVALID_DRIVE );
return 0;
}
*(WORD *)dataptr = 0;
memcpy(dataptr + 2, &serial, sizeof(DWORD));
WideCharToMultiByte(CP_OEMCP, 0, label, 11, (LPSTR)dataptr + 6, 11, NULL, NULL);
memcpy(dataptr + 17, "FAT16 ", 8);
return 1;
}
/******************************************************************
* INT21_SetDiskSerialNumber
*
*/
static BOOL INT21_SetDiskSerialNumber( CONTEXT *context )
{
#if 0
BYTE *dataptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
int drive = INT21_MapDrive(BL_reg(context));
if (!is_valid_drive(drive))
{
SetLastError( ERROR_INVALID_DRIVE );
return FALSE;
}
DRIVE_SetSerialNumber( drive, *(DWORD *)(dataptr + 2) );
return TRUE;
#else
FIXME("Setting drive serial number is no longer supported\n");
SetLastError( ERROR_NOT_SUPPORTED );
return FALSE;
#endif
}
/******************************************************************
* INT21_GetFreeDiskSpace
*
*/
static BOOL INT21_GetFreeDiskSpace( CONTEXT *context )
{
DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters;
WCHAR root[] = {'A',':','\\',0};
const DWORD max_clusters = 0x3d83;
const DWORD max_sectors_per_cluster = 0x7f;
const DWORD max_bytes_per_sector = 0x200;
root[0] += INT21_MapDrive(DL_reg(context));
if (!GetDiskFreeSpaceW( root, &cluster_sectors, &sector_bytes,
&free_clusters, &total_clusters ))
return FALSE;
/* Some old win31 apps (Lotus SmartSuite 5.1) crap out if there's too
* much disk space, so Windows XP seems to apply the following limits:
* cluster_sectors <= 0x7f
* sector size <= 0x200
* clusters <= 0x3D83
* This means total reported space is limited to about 1GB.
*/
/* Make sure bytes-per-sector is in [, max] */
while (sector_bytes > max_bytes_per_sector) {
sector_bytes >>= 1;
free_clusters <<= 1;
total_clusters <<= 1;
}
/* Then make sure sectors-per-cluster is in [max/2, max]. */
while (cluster_sectors <= max_sectors_per_cluster/2) {
cluster_sectors <<= 1;
free_clusters >>= 1;
total_clusters >>= 1;
}
while (cluster_sectors > max_sectors_per_cluster) {
cluster_sectors >>= 1;
free_clusters <<= 1;
total_clusters <<= 1;
}
/* scale up sectors_per_cluster to exactly max_sectors_per_cluster.
* We could skip this, but that would impose an artificially low
* limit on reported disk space.
* To avoid overflow, first apply a preliminary cap on sector count;
* this will not affect the correctness of the final result,
* because if the preliminary cap hits, the final one will, too.
*/
if (total_clusters > 4 * max_clusters)
total_clusters = 4 * max_clusters;
if (free_clusters > 4 * max_clusters)
free_clusters = 4 * max_clusters;
if (cluster_sectors < max_sectors_per_cluster) {
free_clusters *= cluster_sectors;
free_clusters /= max_sectors_per_cluster;
total_clusters *= cluster_sectors;
total_clusters /= max_sectors_per_cluster;
cluster_sectors = max_sectors_per_cluster;
}
/* Finally, apply real cluster count cap. */
if (total_clusters > max_clusters)
total_clusters = max_clusters;
if (free_clusters > max_clusters)
free_clusters = max_clusters;
SET_AX( context, cluster_sectors );
SET_BX( context, free_clusters );
SET_CX( context, sector_bytes );
SET_DX( context, total_clusters );
return TRUE;
}
/******************************************************************
* INT21_GetDriveAllocInfo
*
*/
static BOOL INT21_GetDriveAllocInfo( CONTEXT *context, BYTE drive )
{
INT21_DPB *dpb;
drive = INT21_MapDrive( drive );
if (!INT21_FillDrivePB( drive )) return FALSE;
dpb = &(INT21_GetHeapPointer()->misc_dpb_list[drive]);
SET_AL( context, dpb->cluster_sectors + 1 );
SET_CX( context, dpb->sector_bytes );
SET_DX( context, dpb->num_clusters1 );
context->SegDs = INT21_GetHeapSelector( context );
SET_BX( context, offsetof( INT21_HEAP, misc_dpb_list[drive].media_ID ) );
return TRUE;
}
/***********************************************************************
* INT21_GetExtendedError
*/
static void INT21_GetExtendedError( CONTEXT *context )
{
BYTE class, action, locus;
WORD error = GetLastError();
switch(error)
{
case ERROR_SUCCESS:
class = action = locus = 0;
break;
case ERROR_DIR_NOT_EMPTY:
class = EC_Exists;
action = SA_Ignore;
locus = EL_Disk;
break;
case ERROR_ACCESS_DENIED:
class = EC_AccessDenied;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_CANNOT_MAKE:
class = EC_AccessDenied;
action = SA_Abort;
locus = EL_Unknown;
break;
case ERROR_DISK_FULL:
case ERROR_HANDLE_DISK_FULL:
class = EC_MediaError;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_FILE_EXISTS:
case ERROR_ALREADY_EXISTS:
class = EC_Exists;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_FILE_NOT_FOUND:
case ERROR_PATH_NOT_FOUND:
case ERROR_INVALID_NAME:
class = EC_NotFound;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_GEN_FAILURE:
class = EC_SystemFailure;
action = SA_Abort;
locus = EL_Unknown;
break;
case ERROR_INVALID_DRIVE:
class = EC_MediaError;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_INVALID_HANDLE:
class = EC_ProgramError;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_LOCK_VIOLATION:
class = EC_AccessDenied;
action = SA_Abort;
locus = EL_Disk;
break;
case ERROR_NO_MORE_FILES:
class = EC_MediaError;
action = SA_Abort;
locus = EL_Disk;
break;
case ER_NoNetwork:
class = EC_NotFound;
action = SA_Abort;
locus = EL_Network;
break;
case ERROR_NOT_ENOUGH_MEMORY:
class = EC_OutOfResource;
action = SA_Abort;
locus = EL_Memory;
break;
case ERROR_SEEK:
class = EC_NotFound;
action = SA_Ignore;
locus = EL_Disk;
break;
case ERROR_SHARING_VIOLATION:
class = EC_Temporary;
action = SA_Retry;
locus = EL_Disk;
break;
case ERROR_TOO_MANY_OPEN_FILES:
class = EC_ProgramError;
action = SA_Abort;
locus = EL_Disk;
break;
default:
FIXME("Unknown error %d\n", error );
class = EC_SystemFailure;
action = SA_Abort;
locus = EL_Unknown;
break;
}
TRACE("GET EXTENDED ERROR code 0x%02x class 0x%02x action 0x%02x locus %02x\n",
error, class, action, locus );
SET_AX( context, error );
SET_BH( context, class );
SET_BL( context, action );
SET_CH( context, locus );
}
static BOOL INT21_CreateTempFile( CONTEXT *context )
{
static int counter = 0;
char *name = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx );
char *p = name + strlen(name);
/* despite what Ralf Brown says, some programs seem to call without
* ending backslash (DOS accepts that, so we accept it too) */
if ((p == name) || (p[-1] != '\\')) *p++ = '\\';
for (;;)
{
sprintf( p, "wine%04x.%03d", GetCurrentThreadId(), counter );
counter = (counter + 1) % 1000;
SET_AX( context,
Win32HandleToDosFileHandle(
CreateFileA( name, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
CREATE_NEW, 0, 0 ) ) );
if (AX_reg(context) != HFILE_ERROR16)
{
TRACE("created %s\n", name );
return TRUE;
}
if (GetLastError() != ERROR_FILE_EXISTS) return FALSE;
}
}
/***********************************************************************
* DOSFS_ToDosFCBFormat
*
* Convert a file name to DOS FCB format (8+3 chars, padded with blanks),
* expanding wild cards and converting to upper-case in the process.
* File name can be terminated by '\0', '\\' or '/'.
* Return FALSE if the name is not a valid DOS name.
* 'buffer' must be at least 12 characters long.
*/
/* Chars we don't want to see in DOS file names */
static BOOL INT21_ToDosFCBFormat( LPCWSTR name, LPWSTR buffer )
{
static const WCHAR invalid_chars[] = {'*','?','<','>','|','\\','"','+','=',',',';','[',']',' ','\345',0};
LPCWSTR p = name;
int i;
/* Check for "." and ".." */
if (*p == '.')
{
p++;
buffer[0] = '.';
for(i = 1; i < 11; i++) buffer[i] = ' ';
buffer[11] = 0;
if (*p == '.')
{
buffer[1] = '.';
p++;
}
return (!*p || (*p == '/') || (*p == '\\'));
}
for (i = 0; i < 8; i++)
{
switch(*p)
{
case '\0':
case '\\':
case '/':
case '.':
buffer[i] = ' ';
break;
case '?':
p++;
/* fall through */
case '*':
buffer[i] = '?';
break;
default:
if (wcschr( invalid_chars, *p )) return FALSE;
buffer[i] = *p++;
break;
}
}
if (*p == '*')
{
/* Skip all chars after wildcard up to first dot */
while (*p && (*p != '/') && (*p != '\\') && (*p != '.')) p++;
}
else
{
/* Check if name too long */
if (*p && (*p != '/') && (*p != '\\') && (*p != '.')) return FALSE;
}
if (*p == '.') p++; /* Skip dot */
for (i = 8; i < 11; i++)
{
switch(*p)
{
case '\0':
case '\\':
case '/':
buffer[i] = ' ';
break;
case '.':
return FALSE; /* Second extension not allowed */
case '?':
p++;
/* fall through */
case '*':
buffer[i] = '?';
break;
default:
if (wcschr( invalid_chars, *p )) return FALSE;
buffer[i] = *p++;
break;
}
}
buffer[11] = '\0';
wcsupr( buffer );
/* at most 3 character of the extension are processed
* is something behind this ?
*/
while (*p == '*' || *p == ' ') p++; /* skip wildcards and spaces */
return (!*p || (*p == '/') || (*p == '\\'));
}
static HANDLE INT21_FindHandle;
static const WCHAR *INT21_FindPath; /* will point to current dta->fullPath search */
/******************************************************************
* INT21_FindFirst
*/
static BOOL INT21_FindFirst( CONTEXT *context )
{
WCHAR *p, *q;
const char *path;
FINDFILE_DTA *dta = (FINDFILE_DTA *)INT21_GetCurrentDTA(context);
WCHAR maskW[12], pathW[MAX_PATH];
static const WCHAR wildcardW[] = {'*','.','*',0};
path = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
MultiByteToWideChar(CP_OEMCP, 0, path, -1, pathW, MAX_PATH);
p = wcsrchr( pathW, '\\');
q = wcsrchr( pathW, '/');
if (q>p) p = q;
if (!p)
{
if (pathW[0] && pathW[1] == ':') p = pathW + 2;
else p = pathW;
}
else p++;
/* Note: terminating NULL in dta->mask overwrites dta->search_attr
* (doesn't matter as it is set below anyway)
*/
if (!INT21_ToDosFCBFormat( p, maskW ))
{
SetLastError( ERROR_FILE_NOT_FOUND );
SET_AX( context, ERROR_FILE_NOT_FOUND );
SET_CFLAG(context);
return FALSE;
}
WideCharToMultiByte(CP_OEMCP, 0, maskW, 12, dta->mask, sizeof(dta->mask), NULL, NULL);
dta->fullPath = HeapAlloc( GetProcessHeap(), 0, sizeof(wildcardW) + (p - pathW)*sizeof(WCHAR) );
memcpy( dta->fullPath, pathW, (p - pathW) * sizeof(WCHAR) );
memcpy( dta->fullPath + (p - pathW), wildcardW, sizeof(wildcardW) );
/* we must have a fully qualified file name in dta->fullPath
* (we could have a UNC path, but this would lead to some errors later on)
*/
dta->drive = drive_number( dta->fullPath[0] );
dta->count = 0;
dta->search_attr = CL_reg(context);
return TRUE;
}
/******************************************************************
* match_short
*
* Check is a short path name (DTA unicode) matches a mask (FCB ansi)
*/
static BOOL match_short(LPCWSTR shortW, LPCSTR maskA)
{
WCHAR mask[11], file[12];
int i;
if (!INT21_ToDosFCBFormat( shortW, file )) return FALSE;
MultiByteToWideChar(CP_OEMCP, 0, maskA, 11, mask, 11);
for (i = 0; i < 11; i++)
if (mask[i] != '?' && mask[i] != file[i]) return FALSE;
return TRUE;
}
static unsigned INT21_FindHelper(LPCWSTR fullPath, unsigned drive, unsigned count,
LPCSTR mask, unsigned search_attr,
WIN32_FIND_DATAW* entry)
{
unsigned ncalls;
if ((search_attr & ~(FA_UNUSED | FA_ARCHIVE | FA_RDONLY)) == FA_LABEL)
{
WCHAR path[] = {' ',':','\\',0};
if (count) return 0;
path[0] = drive + 'A';
if (!GetVolumeInformationW(path, entry->cAlternateFileName, 13, NULL, NULL, NULL, NULL, 0)) return 0;
if (!entry->cAlternateFileName[0]) return 0;
RtlSecondsSince1970ToTime( 0, (LARGE_INTEGER *)&entry->ftCreationTime );
RtlSecondsSince1970ToTime( 0, (LARGE_INTEGER *)&entry->ftLastAccessTime );
RtlSecondsSince1970ToTime( 0, (LARGE_INTEGER *)&entry->ftLastWriteTime );
entry->dwFileAttributes = FA_LABEL;
entry->nFileSizeHigh = entry->nFileSizeLow = 0;
TRACE("returning %s as label\n", debugstr_w(entry->cAlternateFileName));
return 1;
}
if (!INT21_FindHandle || INT21_FindPath != fullPath || count == 0)
{
if (INT21_FindHandle) FindClose(INT21_FindHandle);
INT21_FindHandle = FindFirstFileW(fullPath, entry);
if (INT21_FindHandle == INVALID_HANDLE_VALUE)
{
INT21_FindHandle = 0;
return 0;
}
INT21_FindPath = fullPath;
/* we need to resync search */
ncalls = count;
}
else ncalls = 1;
while (ncalls-- != 0)
{
if (!FindNextFileW(INT21_FindHandle, entry))
{
FindClose(INT21_FindHandle); INT21_FindHandle = 0;
return 0;
}
}
while (count < 0xffff)
{
count++;
/* Check the file attributes, and path */
if (!(entry->dwFileAttributes & ~search_attr) &&
match_short(entry->cAlternateFileName[0] ? entry->cAlternateFileName : entry->cFileName,
mask))
{
return count;
}
if (!FindNextFileW(INT21_FindHandle, entry))
{
FindClose(INT21_FindHandle); INT21_FindHandle = 0;
return 0;
}
}
WARN("Too many directory entries in %s\n", debugstr_w(fullPath) );
return 0;
}
/******************************************************************
* INT21_FindNext
*/
static BOOL INT21_FindNext( CONTEXT *context )
{
FINDFILE_DTA *dta = (FINDFILE_DTA *)INT21_GetCurrentDTA(context);
DWORD attr = dta->search_attr | FA_UNUSED | FA_ARCHIVE | FA_RDONLY;
WIN32_FIND_DATAW entry;
int n;
if (!dta->fullPath) return FALSE;
n = INT21_FindHelper(dta->fullPath, dta->drive, dta->count,
dta->mask, attr, &entry);
if (n)
{
dta->fileattr = entry.dwFileAttributes;
dta->filesize = entry.nFileSizeLow;
FileTimeToDosDateTime( &entry.ftLastWriteTime, &dta->filedate, &dta->filetime );
if (entry.cAlternateFileName[0])
WideCharToMultiByte(CP_OEMCP, 0, entry.cAlternateFileName, -1,
dta->filename, 13, NULL, NULL);
else
WideCharToMultiByte(CP_OEMCP, 0, entry.cFileName, -1, dta->filename, 13, NULL, NULL);
if (!memchr(dta->mask,'?',11))
{
/* wildcardless search, release resources in case no findnext will
* be issued, and as a workaround in case file creation messes up
* findnext, as sometimes happens with pkunzip
*/
HeapFree( GetProcessHeap(), 0, dta->fullPath );
INT21_FindPath = dta->fullPath = NULL;
}
dta->count = n;
return TRUE;
}
HeapFree( GetProcessHeap(), 0, dta->fullPath );
INT21_FindPath = dta->fullPath = NULL;
return FALSE;
}
/* microsoft's programmers should be shot for using CP/M style int21
calls in Windows for Workgroup's winfile.exe */
/******************************************************************
* INT21_FindFirstFCB
*
*/
static BOOL INT21_FindFirstFCB( CONTEXT *context )
{
BYTE *fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
FINDFILE_FCB *pFCB;
int drive;
WCHAR p[] = {' ',':',};
if (*fcb == 0xff) pFCB = (FINDFILE_FCB *)(fcb + 7);
else pFCB = (FINDFILE_FCB *)fcb;
drive = INT21_MapDrive( pFCB->drive );
if (drive == MAX_DOS_DRIVES) return FALSE;
p[0] = 'A' + drive;
pFCB->fullPath = HeapAlloc(GetProcessHeap(), 0, MAX_PATH * sizeof(WCHAR));
if (!pFCB->fullPath) return FALSE;
GetLongPathNameW(p, pFCB->fullPath, MAX_PATH);
pFCB->count = 0;
return TRUE;
}
/******************************************************************
* INT21_FindNextFCB
*
*/
static BOOL INT21_FindNextFCB( CONTEXT *context )
{
BYTE *fcb = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
FINDFILE_FCB *pFCB;
LPBYTE pResult = INT21_GetCurrentDTA(context);
DOS_DIRENTRY_LAYOUT *ddl;
WIN32_FIND_DATAW entry;
BYTE attr;
int n;
WCHAR nameW[12];
if (*fcb == 0xff) /* extended FCB ? */
{
attr = fcb[6];
pFCB = (FINDFILE_FCB *)(fcb + 7);
}
else
{
attr = 0;
pFCB = (FINDFILE_FCB *)fcb;
}
if (!pFCB->fullPath) return FALSE;
n = INT21_FindHelper(pFCB->fullPath, INT21_MapDrive( pFCB->drive ),
pFCB->count, pFCB->filename, attr, &entry);
if (!n)
{
HeapFree( GetProcessHeap(), 0, pFCB->fullPath );
INT21_FindPath = pFCB->fullPath = NULL;
return FALSE;
}
pFCB->count += n;
if (*fcb == 0xff)
{
/* place extended FCB header before pResult if called with extended FCB */
*pResult = 0xff;
pResult += 6; /* leave reserved field behind */
*pResult++ = entry.dwFileAttributes;
}
*pResult++ = INT21_MapDrive( pFCB->drive ); /* DOS_DIRENTRY_LAYOUT after current drive number */
ddl = (DOS_DIRENTRY_LAYOUT*)pResult;
ddl->fileattr = entry.dwFileAttributes;
ddl->cluster = 0; /* what else? */
ddl->filesize = entry.nFileSizeLow;
memset( ddl->reserved, 0, sizeof(ddl->reserved) );
FileTimeToDosDateTime( &entry.ftLastWriteTime,
&ddl->filedate, &ddl->filetime );
/* Convert file name to FCB format */
if (entry.cAlternateFileName[0])
INT21_ToDosFCBFormat( entry.cAlternateFileName, nameW );
else
INT21_ToDosFCBFormat( entry.cFileName, nameW );
WideCharToMultiByte(CP_OEMCP, 0, nameW, 11, ddl->filename, 11, NULL, NULL);
return TRUE;
}
/******************************************************************
* INT21_ParseFileNameIntoFCB
*
*/
static void INT21_ParseFileNameIntoFCB( CONTEXT *context )
{
char *filename =
CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi );
char *fcb =
CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi );
char *s;
WCHAR *buffer;
WCHAR fcbW[12];
INT buffer_len, len;
SET_AL( context, 0xff ); /* failed */
TRACE("filename: '%s'\n", filename);
s = filename;
while (*s && (*s != ' ') && (*s != '\r') && (*s != '\n'))
s++;
len = filename - s;
buffer_len = MultiByteToWideChar(CP_OEMCP, 0, filename, len, NULL, 0);
buffer = HeapAlloc( GetProcessHeap(), 0, (buffer_len + 1) * sizeof(WCHAR));
len = MultiByteToWideChar(CP_OEMCP, 0, filename, len, buffer, buffer_len);
buffer[len] = 0;
INT21_ToDosFCBFormat(buffer, fcbW);
HeapFree(GetProcessHeap(), 0, buffer);
WideCharToMultiByte(CP_OEMCP, 0, fcbW, 12, fcb + 1, 12, NULL, NULL);
*fcb = 0;
TRACE("FCB: '%s'\n", fcb + 1);
SET_AL( context, ((strchr(filename, '*')) || (strchr(filename, '$'))) != 0 );
/* point DS:SI to first unparsed character */
SET_SI( context, context->Esi + (int)s - (int)filename );
}
static BOOL INT21_Dup2(HFILE16 hFile1, HFILE16 hFile2)
{
HFILE16 res = HFILE_ERROR16;
HANDLE handle, new_handle;
#define DOS_TABLE_SIZE 256
DWORD map[DOS_TABLE_SIZE / 32];
int i;
handle = DosFileHandleToWin32Handle(hFile1);
if (handle == INVALID_HANDLE_VALUE)
return FALSE;
_lclose16(hFile2);
/* now loop to allocate the same one... */
memset(map, 0, sizeof(map));
for (i = 0; i < DOS_TABLE_SIZE; i++)
{
if (!DuplicateHandle(GetCurrentProcess(), handle,
GetCurrentProcess(), &new_handle,
0, FALSE, DUPLICATE_SAME_ACCESS))
{
res = HFILE_ERROR16;
break;
}
res = Win32HandleToDosFileHandle(new_handle);
if (res == HFILE_ERROR16 || res == hFile2) break;
map[res / 32] |= 1 << (res % 32);
}
/* clean up the allocated slots */
for (i = 0; i < DOS_TABLE_SIZE; i++)
{
if (map[i / 32] & (1 << (i % 32)))
_lclose16((HFILE16)i);
}
return res == hFile2;
}
/***********************************************************************
* DOSVM_Int21Handler
*
* Interrupt 0x21 handler.
*/
void WINAPI DOSVM_Int21Handler( CONTEXT *context )
{
BOOL bSetDOSExtendedError = FALSE;
TRACE( "AX=%04x BX=%04x CX=%04x DX=%04x "
"SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08x\n",
AX_reg(context), BX_reg(context),
CX_reg(context), DX_reg(context),
SI_reg(context), DI_reg(context),
(WORD)context->SegDs, (WORD)context->SegEs,
context->EFlags );
/*
* Extended error is used by (at least) functions 0x2f to 0x62.
* Function 0x59 returns extended error and error should not
* be cleared before handling the function.
*/
if (AH_reg(context) >= 0x2f && AH_reg(context) != 0x59)
SetLastError(0);
RESET_CFLAG(context); /* Not sure if this is a good idea. */
switch(AH_reg(context))
{
case 0x00: /* TERMINATE PROGRAM */
TRACE("TERMINATE PROGRAM\n");
DOSVM_Exit( 0 );
break;
case 0x01: /* READ CHARACTER FROM STANDARD INPUT, WITH ECHO */
TRACE("DIRECT CHARACTER INPUT WITH ECHO - not supported\n");
break;
case 0x02: /* WRITE CHARACTER TO STANDARD OUTPUT */
TRACE("Write Character to Standard Output\n");
break;
case 0x03: /* READ CHARACTER FROM STDAUX */
case 0x04: /* WRITE CHARACTER TO STDAUX */
case 0x05: /* WRITE CHARACTER TO PRINTER */
INT_BARF( context, 0x21 );
break;
case 0x06: /* DIRECT CONSOLE IN/OUTPUT */
if (DL_reg(context) == 0xff)
{
TRACE("Direct Console Input\n");
/* no character available */
SET_AL( context, 0 );
SET_ZFLAG( context );
}
else
{
TRACE("Direct Console Output\n");
/*
* At least DOS versions 2.1-7.0 return character
* that was written in AL register.
*/
SET_AL( context, DL_reg(context) );
}
break;
case 0x07: /* DIRECT CHARACTER INPUT WITHOUT ECHO */
TRACE("DIRECT CHARACTER INPUT WITHOUT ECHO - not supported\n");
SET_AL( context, 0 );
break;
case 0x08: /* CHARACTER INPUT WITHOUT ECHO */
TRACE("CHARACTER INPUT WITHOUT ECHO - not supported\n");
SET_AL( context, 0 );
break;
case 0x09: /* WRITE STRING TO STANDARD OUTPUT */
TRACE("WRITE '$'-terminated string from %04X:%04X to stdout\n",
context->SegDs, DX_reg(context) );
{
LPSTR data = CTX_SEG_OFF_TO_LIN( context,
context->SegDs, context->Edx );
LPSTR p = data;
DWORD w;
/*
* Do NOT use strchr() to calculate the string length,
* as '\0' is valid string content, too!
* Maybe we should check for non-'$' strings, but DOS doesn't.
*/
while (*p != '$') p++;
WriteFile( DosFileHandleToWin32Handle(1), data, p - data, &w, NULL );
SET_AL( context, '$' ); /* yes, '$' (0x24) gets returned in AL */
}
break;
case 0x0a: /* BUFFERED INPUT */
TRACE( "BUFFERED INPUT - not supported\n" );
break;
case 0x0b: /* GET STDIN STATUS */
TRACE( "GET STDIN STATUS - not supported\n" );
SET_AL( context, 0 ); /* no character available */
break;
case 0x0c: /* FLUSH BUFFER AND READ STANDARD INPUT */
{
BYTE al = AL_reg(context); /* Input function to execute after flush. */
TRACE( "FLUSH BUFFER AND READ STANDARD INPUT - 0x%02x\n", al );
/* FIXME: buffers are not flushed */
/*
* If AL is one of 0x01, 0x06, 0x07, 0x08, or 0x0a,
* int21 function identified by AL will be called.
*/
if(al == 0x01 || al == 0x06 || al == 0x07 || al == 0x08 || al == 0x0a)
{
SET_AH( context, al );
DOSVM_Int21Handler( context );
}
}
break;
case 0x0d: /* DISK BUFFER FLUSH */
TRACE("DISK BUFFER FLUSH ignored\n");
break;
case 0x0e: /* SELECT DEFAULT DRIVE */
TRACE( "SELECT DEFAULT DRIVE - %c:\n", 'A' + DL_reg(context) );
INT21_SetCurrentDrive( DL_reg(context) );
SET_AL( context, MAX_DOS_DRIVES );
break;
case 0x0f: /* OPEN FILE USING FCB */
INT21_OpenFileUsingFCB( context );
break;
case 0x10: /* CLOSE FILE USING FCB */
INT21_CloseFileUsingFCB( context );
break;
case 0x11: /* FIND FIRST MATCHING FILE USING FCB */
TRACE("FIND FIRST MATCHING FILE USING FCB %p\n",
CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx));
if (!INT21_FindFirstFCB(context))
{
SET_AL( context, 0xff );
break;
}
/* else fall through */
case 0x12: /* FIND NEXT MATCHING FILE USING FCB */
SET_AL( context, INT21_FindNextFCB(context) ? 0x00 : 0xff );
break;
case 0x13: /* DELETE FILE USING FCB */
INT_BARF( context, 0x21 );
break;
case 0x14: /* SEQUENTIAL READ FROM FCB FILE */
INT21_SequentialReadFromFCB( context );
break;
case 0x15: /* SEQUENTIAL WRITE TO FCB FILE */
INT21_SequentialWriteToFCB( context );
break;
case 0x16: /* CREATE OR TRUNCATE FILE USING FCB */
case 0x17: /* RENAME FILE USING FCB */
INT_BARF( context, 0x21 );
break;
case 0x18: /* NULL FUNCTION FOR CP/M COMPATIBILITY */
SET_AL( context, 0 );
break;
case 0x19: /* GET CURRENT DEFAULT DRIVE */
SET_AL( context, INT21_GetCurrentDrive() );
TRACE( "GET CURRENT DRIVE -> %c:\n", 'A' + AL_reg( context ) );
break;
case 0x1a: /* SET DISK TRANSFER AREA ADDRESS */
TRACE( "SET DISK TRANSFER AREA ADDRESS %04X:%04X\n",
context->SegDs, DX_reg(context) );
{
TDB *task = GlobalLock16( GetCurrentTask() );
task->dta = MAKESEGPTR( context->SegDs, DX_reg(context) );
}
break;
case 0x1b: /* GET ALLOCATION INFORMATION FOR DEFAULT DRIVE */
if (!INT21_GetDriveAllocInfo(context, 0))
SET_AX( context, 0xffff );
break;
case 0x1c: /* GET ALLOCATION INFORMATION FOR SPECIFIC DRIVE */
if (!INT21_GetDriveAllocInfo(context, DL_reg(context)))
SET_AX( context, 0xffff );
break;
case 0x1d: /* NULL FUNCTION FOR CP/M COMPATIBILITY */
case 0x1e: /* NULL FUNCTION FOR CP/M COMPATIBILITY */
SET_AL( context, 0 );
break;
case 0x1f: /* GET DRIVE PARAMETER BLOCK FOR DEFAULT DRIVE */
{
BYTE drive = INT21_MapDrive( 0 );
TRACE( "GET DPB FOR DEFAULT DRIVE\n" );
if (INT21_FillDrivePB( drive ))
{
SET_AL( context, 0x00 ); /* success */
SET_BX( context, offsetof( INT21_HEAP, misc_dpb_list[drive] ) );
context->SegDs = INT21_GetHeapSelector( context );
}
else
{
SET_AL( context, 0xff ); /* invalid or network drive */
}
}
break;
case 0x20: /* NULL FUNCTION FOR CP/M COMPATIBILITY */
SET_AL( context, 0 );
break;
case 0x21: /* READ RANDOM RECORD FROM FCB FILE */
INT21_ReadRandomRecordFromFCB( context );
break;
case 0x22: /* WRITE RANDOM RECORD TO FCB FILE */
INT21_WriteRandomRecordToFCB( context );
break;
case 0x23: /* GET FILE SIZE FOR FCB */
case 0x24: /* SET RANDOM RECORD NUMBER FOR FCB */
INT_BARF( context, 0x21 );
break;
case 0x25: /* SET INTERRUPT VECTOR */
TRACE("SET INTERRUPT VECTOR 0x%02x\n",AL_reg(context));
{
FARPROC16 ptr = (FARPROC16)MAKESEGPTR( context->SegDs, DX_reg(context) );
DOSVM_SetPMHandler16( AL_reg(context), ptr );
}
break;
case 0x26: /* CREATE NEW PROGRAM SEGMENT PREFIX */
INT_BARF( context, 0x21 );
break;
case 0x27: /* RANDOM BLOCK READ FROM FCB FILE */
INT21_RandomBlockReadFromFCB( context );
break;
case 0x28: /* RANDOM BLOCK WRITE TO FCB FILE */
INT21_RandomBlockWriteToFCB( context );
break;
case 0x29: /* PARSE FILENAME INTO FCB */
INT21_ParseFileNameIntoFCB(context);
break;
case 0x2a: /* GET SYSTEM DATE */
TRACE( "GET SYSTEM DATE\n" );
{
SYSTEMTIME systime;
GetLocalTime( &systime );
SET_CX( context, systime.wYear );
SET_DH( context, systime.wMonth );
SET_DL( context, systime.wDay );
SET_AL( context, systime.wDayOfWeek );
}
break;
case 0x2b: /* SET SYSTEM DATE */
TRACE( "SET SYSTEM DATE\n" );
{
WORD year = CX_reg(context);
BYTE month = DH_reg(context);
BYTE day = DL_reg(context);
if (year >= 1980 && year <= 2099 &&
month >= 1 && month <= 12 &&
day >= 1 && day <= 31)
{
FIXME( "SetSystemDate(%02d/%02d/%04d): not allowed\n",
day, month, year );
SET_AL( context, 0 ); /* Let's pretend we succeeded */
}
else
{
SET_AL( context, 0xff ); /* invalid date */
TRACE( "SetSystemDate(%02d/%02d/%04d): invalid date\n",
day, month, year );
}
}
break;
case 0x2c: /* GET SYSTEM TIME */
TRACE( "GET SYSTEM TIME\n" );
{
SYSTEMTIME systime;
GetLocalTime( &systime );
SET_CH( context, systime.wHour );
SET_CL( context, systime.wMinute );
SET_DH( context, systime.wSecond );
SET_DL( context, systime.wMilliseconds / 10 );
}
break;
case 0x2d: /* SET SYSTEM TIME */
if( CH_reg(context) >= 24 || CL_reg(context) >= 60 || DH_reg(context) >= 60 || DL_reg(context) >= 100 ) {
TRACE("SetSystemTime(%02d:%02d:%02d.%02d): wrong time\n",
CH_reg(context), CL_reg(context),
DH_reg(context), DL_reg(context) );
SET_AL( context, 0xFF );
}
else
{
FIXME("SetSystemTime(%02d:%02d:%02d.%02d): not allowed\n",
CH_reg(context), CL_reg(context),
DH_reg(context), DL_reg(context) );
SET_AL( context, 0 ); /* Let's pretend we succeeded */
}
break;
case 0x2e: /* SET VERIFY FLAG */
TRACE("SET VERIFY FLAG ignored\n");
/* we cannot change the behaviour anyway, so just ignore it */
break;
case 0x2f: /* GET DISK TRANSFER AREA ADDRESS */
TRACE( "GET DISK TRANSFER AREA ADDRESS\n" );
{
TDB *task = GlobalLock16( GetCurrentTask() );
context->SegEs = SELECTOROF( task->dta );
SET_BX( context, OFFSETOF( task->dta ) );
}
break;
case 0x30: /* GET DOS VERSION */
TRACE( "GET DOS VERSION - %s requested\n",
(AL_reg(context) == 0x00) ? "OEM number" : "version flag" );
if (AL_reg(context) == 0x00)
SET_BH( context, 0xff ); /* OEM number => undefined */
else
SET_BH( context, 0x08 ); /* version flag => DOS is in ROM */
SET_AL( context, HIBYTE(HIWORD(GetVersion16())) ); /* major version */
SET_AH( context, LOBYTE(HIWORD(GetVersion16())) ); /* minor version */
SET_BL( context, 0x12 ); /* 0x123456 is 24-bit Wine's serial # */
SET_CX( context, 0x3456 );
break;
case 0x31: /* TERMINATE AND STAY RESIDENT */
FIXME("TERMINATE AND STAY RESIDENT stub\n");
break;
case 0x32: /* GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE */
{
BYTE drive = INT21_MapDrive( DL_reg(context) );
TRACE( "GET DPB FOR SPECIFIC DRIVE %d\n", DL_reg(context) );
if (INT21_FillDrivePB( drive ))
{
SET_AL( context, 0x00 ); /* success */
SET_BX( context, offsetof( INT21_HEAP, misc_dpb_list[drive] ) );
context->SegDs = INT21_GetHeapSelector( context );
}
else
{
SET_AL( context, 0xff ); /* invalid or network drive */
}
}
break;
case 0x33: /* MULTIPLEXED */
switch (AL_reg(context))
{
case 0x00: /* GET CURRENT EXTENDED BREAK STATE */
TRACE("GET CURRENT EXTENDED BREAK STATE\n");
SET_DL( context, brk_flag );
break;
case 0x01: /* SET EXTENDED BREAK STATE */
TRACE("SET CURRENT EXTENDED BREAK STATE\n");
brk_flag = (DL_reg(context) > 0) ? 1 : 0;
break;
case 0x02: /* GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE*/
TRACE("GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE\n");
/* ugly coding in order to stay reentrant */
if (DL_reg(context))
{
SET_DL( context, brk_flag );
brk_flag = 1;
}
else
{
SET_DL( context, brk_flag );
brk_flag = 0;
}
break;
case 0x05: /* GET BOOT DRIVE */
TRACE("GET BOOT DRIVE\n");
SET_DL( context, 3 );
/* c: is Wine's bootdrive (a: is 1)*/
break;
case 0x06: /* GET TRUE VERSION NUMBER */
TRACE("GET TRUE VERSION NUMBER\n");
SET_BL( context, HIBYTE(HIWORD(GetVersion16())) ); /* major */
SET_BH( context, LOBYTE(HIWORD(GetVersion16())) ); /* minor */
SET_DL( context, 0x00 ); /* revision */
SET_DH( context, 0x08 ); /* DOS is in ROM */
break;
default:
INT_BARF( context, 0x21 );
break;
}
break;
case 0x34: /* GET ADDRESS OF INDOS FLAG */
TRACE( "GET ADDRESS OF INDOS FLAG\n" );
context->SegEs = INT21_GetHeapSelector( context );
SET_BX( context, offsetof(INT21_HEAP, misc_indos) );
break;
case 0x35: /* GET INTERRUPT VECTOR */
TRACE("GET INTERRUPT VECTOR 0x%02x\n",AL_reg(context));
{
FARPROC16 addr = DOSVM_GetPMHandler16( AL_reg(context) );
context->SegEs = SELECTOROF(addr);
SET_BX( context, OFFSETOF(addr) );
}
break;
case 0x36: /* GET FREE DISK SPACE */
TRACE("GET FREE DISK SPACE FOR DRIVE %s (limited to about 1GB)\n",
INT21_DriveName( DL_reg(context) ));
if (!INT21_GetFreeDiskSpace(context)) SET_AX( context, 0xffff );
break;
case 0x37: /* SWITCHAR */
{
switch (AL_reg(context))
{
case 0x00: /* "SWITCHAR" - GET SWITCH CHARACTER */
TRACE( "SWITCHAR - GET SWITCH CHARACTER\n" );
SET_AL( context, 0x00 ); /* success*/
SET_DL( context, '/' );
break;
case 0x01: /*"SWITCHAR" - SET SWITCH CHARACTER*/
FIXME( "SWITCHAR - SET SWITCH CHARACTER: %c\n",
DL_reg( context ));
SET_AL( context, 0x00 ); /* success*/
break;
default:
INT_BARF( context, 0x21 );
break;
}
}
break;
case 0x38: /* GET COUNTRY-SPECIFIC INFORMATION */
TRACE( "GET COUNTRY-SPECIFIC INFORMATION\n" );
if (AL_reg(context))
{
WORD country = AL_reg(context);
if (country == 0xff)
country = BX_reg(context);
if (country != INT21_GetSystemCountryCode()) {
FIXME( "Requested info on non-default country %04x\n", country );
SET_AX(context, 2);
SET_CFLAG(context);
}
}
if(AX_reg(context) != 2 )
{
INT21_FillCountryInformation( CTX_SEG_OFF_TO_LIN(context,
context->SegDs,
context->Edx) );
SET_AX( context, INT21_GetSystemCountryCode() );
SET_BX( context, INT21_GetSystemCountryCode() );
RESET_CFLAG(context);
}
break;
case 0x39: /* "MKDIR" - CREATE SUBDIRECTORY */
if (!INT21_CreateDirectory( context ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x3a: /* "RMDIR" - REMOVE DIRECTORY */
{
WCHAR dirW[MAX_PATH];
char *dirA = CTX_SEG_OFF_TO_LIN(context,
context->SegDs, context->Edx);
TRACE( "REMOVE DIRECTORY %s\n", dirA );
MultiByteToWideChar(CP_OEMCP, 0, dirA, -1, dirW, MAX_PATH);
if (!RemoveDirectoryW( dirW ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
}
break;
case 0x3b: /* "CHDIR" - SET CURRENT DIRECTORY */
if (!INT21_SetCurrentDirectory( context ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x3c: /* "CREAT" - CREATE OR TRUNCATE FILE */
if (!INT21_CreateFile( context, context->Edx, FALSE,
OF_READWRITE | OF_SHARE_COMPAT, 0x12 ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x3d: /* "OPEN" - OPEN EXISTING FILE */
if (!INT21_CreateFile( context, context->Edx, FALSE,
AL_reg(context), 0x01 ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x3e: /* "CLOSE" - CLOSE FILE */
TRACE( "CLOSE handle %d\n", BX_reg(context) );
if (_lclose16( BX_reg(context) ) == HFILE_ERROR16)
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x3f: /* "READ" - READ FROM FILE OR DEVICE */
TRACE( "READ from %d to %04X:%04X for %d bytes\n",
BX_reg(context),
context->SegDs,
DX_reg(context),
CX_reg(context) );
{
DWORD result;
WORD count = CX_reg(context);
BYTE *buffer = CTX_SEG_OFF_TO_LIN( context,
context->SegDs,
context->Edx );
/* Some programs pass a count larger than the allocated buffer */
DWORD maxcount = GetSelectorLimit16( context->SegDs ) - DX_reg(context) + 1;
if (count > maxcount) count = maxcount;
/*
* FIXME: Reading from console (BX=1) in DOS mode
* does not work as it is supposed to work.
*/
RESET_CFLAG(context); /* set if error */
if (ReadFile( DosFileHandleToWin32Handle(BX_reg(context)), buffer, count, &result, NULL ))
SET_AX( context, (WORD)result );
else
bSetDOSExtendedError = TRUE;
}
break;
case 0x40: /* "WRITE" - WRITE TO FILE OR DEVICE */
TRACE( "WRITE from %04X:%04X to handle %d for %d byte\n",
context->SegDs, DX_reg(context),
BX_reg(context), CX_reg(context) );
{
char *ptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
HFILE handle = (HFILE)DosFileHandleToWin32Handle(BX_reg(context));
LONG result = _hwrite( handle, ptr, CX_reg(context) );
if (result == HFILE_ERROR)
bSetDOSExtendedError = TRUE;
else
{
SET_AX( context, (WORD)result );
RESET_CFLAG(context);
}
}
break;
case 0x41: /* "UNLINK" - DELETE FILE */
{
WCHAR fileW[MAX_PATH];
char *fileA = CTX_SEG_OFF_TO_LIN(context,
context->SegDs,
context->Edx);
TRACE( "UNLINK %s\n", fileA );
MultiByteToWideChar(CP_OEMCP, 0, fileA, -1, fileW, MAX_PATH);
if (!DeleteFileW( fileW ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
}
break;
case 0x42: /* "LSEEK" - SET CURRENT FILE POSITION */
TRACE( "LSEEK handle %d offset %d from %s\n",
BX_reg(context),
MAKELONG( DX_reg(context), CX_reg(context) ),
(AL_reg(context) == 0) ?
"start of file" : ((AL_reg(context) == 1) ?
"current file position" : "end of file") );
{
HANDLE handle = DosFileHandleToWin32Handle(BX_reg(context));
LONG offset = MAKELONG( DX_reg(context), CX_reg(context) );
DWORD status = SetFilePointer( handle, offset,
NULL, AL_reg(context) );
if (status == INVALID_SET_FILE_POINTER)
bSetDOSExtendedError = TRUE;
else
{
SET_AX( context, LOWORD(status) );
SET_DX( context, HIWORD(status) );
RESET_CFLAG(context);
}
}
break;
case 0x43: /* FILE ATTRIBUTES */
if (!INT21_FileAttributes( context, AL_reg(context), FALSE ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x44: /* IOCTL */
INT21_Ioctl( context );
break;
case 0x45: /* "DUP" - DUPLICATE FILE HANDLE */
TRACE( "DUPLICATE FILE HANDLE %d\n", BX_reg(context) );
{
HANDLE handle32;
HFILE handle16 = HFILE_ERROR;
if (DuplicateHandle( GetCurrentProcess(),
DosFileHandleToWin32Handle(BX_reg(context)),
GetCurrentProcess(),
&handle32,
0, TRUE, DUPLICATE_SAME_ACCESS ))
handle16 = Win32HandleToDosFileHandle(handle32);
if (handle16 == HFILE_ERROR)
bSetDOSExtendedError = TRUE;
else
{
SET_AX( context, handle16 );
RESET_CFLAG(context);
}
}
break;
case 0x46: /* "DUP2", "FORCEDUP" - FORCE DUPLICATE FILE HANDLE */
TRACE( "FORCEDUP - FORCE DUPLICATE FILE HANDLE %d to %d\n",
BX_reg(context), CX_reg(context) );
if (!INT21_Dup2(BX_reg(context), CX_reg(context)))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x47: /* "CWD" - GET CURRENT DIRECTORY */
if (!INT21_GetCurrentDirectory( context, FALSE ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x48: /* ALLOCATE MEMORY */
TRACE( "ALLOCATE MEMORY for %d paragraphs\n", BX_reg(context) );
{
DWORD bytes = (DWORD)BX_reg(context) << 4;
DWORD rv = GlobalDOSAlloc16( bytes );
WORD selector = LOWORD( rv );
if (selector)
{
SET_AX( context, selector );
RESET_CFLAG(context);
}
else
{
SET_CFLAG(context);
SET_AX( context, 0x0008 ); /* insufficient memory */
SET_BX( context, DOSMEM_Available() >> 4 );
}
}
break;
case 0x49: /* FREE MEMORY */
TRACE( "FREE MEMORY segment %04X\n", context->SegEs );
{
BOOL ok = !GlobalDOSFree16( context->SegEs );
/* If we don't reset ES_reg, we will fail in the relay code */
if (ok) context->SegEs = 0;
else
{
TRACE("FREE MEMORY failed\n");
SET_CFLAG(context);
SET_AX( context, 0x0009 ); /* memory block address invalid */
}
}
break;
case 0x4a: /* RESIZE MEMORY BLOCK */
TRACE( "RESIZE MEMORY segment %04X to %d paragraphs\n",
context->SegEs, BX_reg(context) );
{
FIXME( "Resize memory block - unsupported under Win16\n" );
SET_CFLAG(context);
}
break;
case 0x4b: /* "EXEC" - LOAD AND/OR EXECUTE PROGRAM */
{
char *program = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
HINSTANCE16 instance;
TRACE( "EXEC %s\n", program );
RESET_CFLAG(context);
instance = WinExec16( program, SW_NORMAL );
if (instance < 32)
{
SET_CFLAG( context );
SET_AX( context, instance );
}
}
break;
case 0x4c: /* "EXIT" - TERMINATE WITH RETURN CODE */
TRACE( "EXIT with return code %d\n", AL_reg(context) );
DOSVM_Exit( AL_reg(context) );
break;
case 0x4d: /* GET RETURN CODE */
TRACE("GET RETURN CODE (ERRORLEVEL)\n");
SET_AX( context, 0 );
break;
case 0x4e: /* "FINDFIRST" - FIND FIRST MATCHING FILE */
TRACE("FINDFIRST mask 0x%04x spec %s\n",CX_reg(context),
(LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx));
if (!INT21_FindFirst(context)) break;
/* fall through */
case 0x4f: /* "FINDNEXT" - FIND NEXT MATCHING FILE */
TRACE("FINDNEXT\n");
if (!INT21_FindNext(context))
{
SetLastError( ERROR_NO_MORE_FILES );
SET_AX( context, ERROR_NO_MORE_FILES );
SET_CFLAG(context);
}
else SET_AX( context, 0 ); /* OK */
break;
case 0x50: /* SET CURRENT PROCESS ID (SET PSP ADDRESS) */
TRACE("SET CURRENT PROCESS ID (SET PSP ADDRESS)\n");
DOSVM_psp = BX_reg(context);
break;
case 0x51: /* GET PSP ADDRESS */
INT21_GetPSP( context );
break;
case 0x52: /* "SYSVARS" - GET LIST OF LISTS */
TRACE("Get List of Lists - not supported\n");
context->SegEs = 0;
SET_BX( context, 0 );
break;
case 0x54: /* Get Verify Flag */
TRACE("Get Verify Flag - Not Supported\n");
SET_AL( context, 0x00 ); /* pretend we can tell. 00h = off 01h = on */
break;
case 0x56: /* "RENAME" - RENAME FILE */
if (!INT21_RenameFile( context ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x57: /* FILE DATE AND TIME */
if (!INT21_FileDateTime( context ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x58: /* GET OR SET MEMORY ALLOCATION STRATEGY */
switch (AL_reg(context))
{
case 0x00: /* GET MEMORY ALLOCATION STRATEGY */
TRACE( "GET MEMORY ALLOCATION STRATEGY\n" );
SET_AX( context, 0 ); /* low memory first fit */
break;
case 0x01: /* SET ALLOCATION STRATEGY */
TRACE( "SET MEMORY ALLOCATION STRATEGY to %d - ignored\n",
BL_reg(context) );
break;
case 0x02: /* GET UMB LINK STATE */
TRACE( "GET UMB LINK STATE\n" );
SET_AL( context, 0 ); /* UMBs not part of DOS memory chain */
break;
case 0x03: /* SET UMB LINK STATE */
TRACE( "SET UMB LINK STATE to %d - ignored\n",
BX_reg(context) );
break;
default:
INT_BARF( context, 0x21 );
}
break;
case 0x59: /* GET EXTENDED ERROR INFO */
INT21_GetExtendedError( context );
break;
case 0x5a: /* CREATE TEMPORARY FILE */
TRACE("CREATE TEMPORARY FILE\n");
bSetDOSExtendedError = !INT21_CreateTempFile(context);
break;
case 0x5b: /* CREATE NEW FILE */
if (!INT21_CreateFile( context, context->Edx, FALSE,
OF_READWRITE | OF_SHARE_COMPAT, 0x10 ))
bSetDOSExtendedError = TRUE;
else
RESET_CFLAG(context);
break;
case 0x5c: /* "FLOCK" - RECORD LOCKING */
{
DWORD offset = MAKELONG(DX_reg(context), CX_reg(context));
DWORD length = MAKELONG(DI_reg(context), SI_reg(context));
HANDLE handle = DosFileHandleToWin32Handle(BX_reg(context));
RESET_CFLAG(context);
switch (AL_reg(context))
{
case 0x00: /* LOCK */
TRACE( "lock handle %d offset %d length %d\n",
BX_reg(context), offset, length );
if (!LockFile( handle, offset, 0, length, 0 ))
bSetDOSExtendedError = TRUE;
break;
case 0x01: /* UNLOCK */
TRACE( "unlock handle %d offset %d length %d\n",
BX_reg(context), offset, length );
if (!UnlockFile( handle, offset, 0, length, 0 ))
bSetDOSExtendedError = TRUE;
break;
default:
INT_BARF( context, 0x21 );
}
}
break;
case 0x5d: /* NETWORK 5D */
FIXME( "Network function 5D not implemented.\n" );
SetLastError( ER_NoNetwork );
bSetDOSExtendedError = TRUE;
break;
case 0x5e: /* NETWORK 5E */
bSetDOSExtendedError = INT21_NetworkFunc( context);
break;
case 0x5f: /* NETWORK 5F */
/* FIXME: supporting this would need to 1:
* - implement per drive current directory (as kernel32 doesn't)
* - assign enabled/disabled flag on a per drive basis
*/
/* network software not installed */
TRACE("NETWORK function AX=%04x not implemented\n",AX_reg(context));
SetLastError( ER_NoNetwork );
bSetDOSExtendedError = TRUE;
break;
case 0x60: /* "TRUENAME" - CANONICALIZE FILENAME OR PATH */
{
WCHAR pathW[MAX_PATH], res[MAX_PATH];
/* FIXME: likely to be broken */
TRACE("TRUENAME %s\n",
(LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Esi));
MultiByteToWideChar(CP_OEMCP, 0, CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi), -1, pathW, MAX_PATH);
if (!GetFullPathNameW( pathW, 128, res, NULL ))
bSetDOSExtendedError = TRUE;
else
{
SET_AX( context, 0 );
WideCharToMultiByte(CP_OEMCP, 0, res, -1,
CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi),
128, NULL, NULL);
}
}
break;
case 0x61: /* UNUSED */
SET_AL( context, 0 );
break;
case 0x62: /* GET PSP ADDRESS */
INT21_GetPSP( context );
break;
case 0x63: /* MISC. LANGUAGE SUPPORT */
switch (AL_reg(context)) {
case 0x00: /* GET DOUBLE BYTE CHARACTER SET LEAD-BYTE TABLE */
TRACE( "GET DOUBLE BYTE CHARACTER SET LEAD-BYTE TABLE\n" );
context->SegDs = INT21_GetHeapSelector( context );
SET_SI( context, offsetof(INT21_HEAP, dbcs_table) );
SET_AL( context, 0 ); /* success */
break;
}
break;
case 0x64: /* OS/2 DOS BOX */
INT_BARF( context, 0x21 );
SET_CFLAG(context);
break;
case 0x65: /* EXTENDED COUNTRY INFORMATION */
INT21_ExtendedCountryInformation( context );
break;
case 0x66: /* GLOBAL CODE PAGE TABLE */
switch (AL_reg(context))
{
case 0x01:
TRACE( "GET GLOBAL CODE PAGE TABLE\n" );
SET_BX( context, GetOEMCP() );
SET_DX( context, GetOEMCP() );
break;
case 0x02:
FIXME( "SET GLOBAL CODE PAGE TABLE, active %d, system %d - ignored\n",
BX_reg(context), DX_reg(context) );
break;
}
break;
case 0x67: /* SET HANDLE COUNT */
TRACE( "SET HANDLE COUNT to %d\n", BX_reg(context) );
if (SetHandleCount( BX_reg(context) ) < BX_reg(context) )
bSetDOSExtendedError = TRUE;
break;
case 0x68: /* "FFLUSH" - COMMIT FILE */
TRACE( "FFLUSH - handle %d\n", BX_reg(context) );
if (!FlushFileBuffers( DosFileHandleToWin32Handle(BX_reg(context)) ) &&
GetLastError() != ERROR_ACCESS_DENIED)
bSetDOSExtendedError = TRUE;
break;
case 0x69: /* DISK SERIAL NUMBER */
switch (AL_reg(context))
{
case 0x00:
TRACE("GET DISK SERIAL NUMBER for drive %s\n",
INT21_DriveName(BL_reg(context)));
if (!INT21_GetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE;
else SET_AX( context, 0 );
break;
case 0x01:
TRACE("SET DISK SERIAL NUMBER for drive %s\n",
INT21_DriveName(BL_reg(context)));
if (!INT21_SetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE;
else SET_AX( context, 1 );
break;
}
break;
case 0x6a: /* COMMIT FILE */
TRACE( "COMMIT FILE - handle %d\n", BX_reg(context) );
if (!FlushFileBuffers( DosFileHandleToWin32Handle(BX_reg(context)) ) &&
GetLastError() != ERROR_ACCESS_DENIED)
bSetDOSExtendedError = TRUE;
break;
case 0x6b: /* NULL FUNCTION FOR CP/M COMPATIBILITY */
SET_AL( context, 0 );
break;
case 0x6c: /* EXTENDED OPEN/CREATE */
if (!INT21_CreateFile( context, context->Esi, TRUE,
BX_reg(context), DL_reg(context) ))
bSetDOSExtendedError = TRUE;
break;
case 0x70: /* MSDOS 7 - GET/SET INTERNATIONALIZATION INFORMATION */
FIXME( "MS-DOS 7 - GET/SET INTERNATIONALIZATION INFORMATION\n" );
SET_CFLAG( context );
SET_AL( context, 0 );
break;
case 0x71: /* MSDOS 7 - LONG FILENAME FUNCTIONS */
INT21_LongFilename( context );
break;
case 0x73: /* MSDOS7 - FAT32 */
RESET_CFLAG( context );
if (!INT21_Fat32( context ))
bSetDOSExtendedError = TRUE;
break;
case 0xdc: /* CONNECTION SERVICES - GET CONNECTION NUMBER */
TRACE( "CONNECTION SERVICES - GET CONNECTION NUMBER - ignored\n" );
break;
case 0xea: /* NOVELL NETWARE - RETURN SHELL VERSION */
TRACE( "NOVELL NETWARE - RETURN SHELL VERSION - ignored\n" );
break;
case 0xff: /* DOS32 EXTENDER (DOS/4GW) - API */
/* we don't implement a DOS32 extender */
TRACE( "DOS32 EXTENDER API - ignored\n" );
break;
default:
INT_BARF( context, 0x21 );
break;
} /* END OF SWITCH */
/* Set general error condition. */
if (bSetDOSExtendedError)
{
SET_AX( context, GetLastError() );
SET_CFLAG( context );
}
/* Print error code if carry flag is set. */
if (context->EFlags & 0x0001)
TRACE("failed, error %d\n", GetLastError() );
TRACE( "returning: AX=%04x BX=%04x CX=%04x DX=%04x "
"SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08x\n",
AX_reg(context), BX_reg(context),
CX_reg(context), DX_reg(context),
SI_reg(context), DI_reg(context),
(WORD)context->SegDs, (WORD)context->SegEs,
context->EFlags );
}
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