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/*
* DOS file system functions
*
* Copyright 1993 Erik Bos
* Copyright 1996 Alexandre Julliard
*/
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
/* Define the VFAT ioctl to get both short and long file names */
/* FIXME: is it possible to get this to work on other systems? */
#ifdef linux
#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, long)
/* We want the real kernel dirent structure, not the libc one */
typedef struct
{
long d_ino;
long d_off;
unsigned short d_reclen;
char d_name[256];
} KERNEL_DIRENT;
#else /* linux */
#undef VFAT_IOCTL_READDIR_BOTH /* just in case... */
#endif /* linux */
/* Chars we don't want to see in DOS file names */
static const DOS_DEVICE DOSFS_Devices[] =
/* name, device flags (see Int 21/AX=0x4400) */
{
{ "CON", 0xc0d3 },
{ "PRN", 0xa0c0 },
{ "NUL", 0x80c4 },
{ "AUX", 0x80c0 },
{ "LPT1", 0xa0c0 },
{ "LPT2", 0xa0c0 },
{ "LPT3", 0xa0c0 },
{ "LPT4", 0xc0d3 },
{ "COM1", 0x80c0 },
{ "COM2", 0x80c0 },
{ "COM3", 0x80c0 },
{ "COM4", 0x80c0 },
{ "SCSIMGR$", 0xc0c0 },
{ "HPSCAN", 0xc0c0 }
};
#define GET_DRIVE(path) \
(((path)[1] == ':') ? toupper((path)[0]) - 'A' : DOSFS_CurDrive)
/* DOS extended error status */
WORD DOS_ExtendedError;
BYTE DOS_ErrorClass;
BYTE DOS_ErrorAction;
BYTE DOS_ErrorLocus;
/* Directory info for DOSFS_ReadDir */
typedef struct
{
DIR *dir;
#ifdef VFAT_IOCTL_READDIR_BOTH
int fd;
char short_name[12];
/* Info structure for FindFirstFile handle */
typedef struct
{
LPSTR path;
LPSTR long_mask;
LPSTR short_mask;
BYTE attr;
int drive;
int cur_pos;
DOS_DIR *dir;
} FIND_FIRST_INFO;
/***********************************************************************
* DOSFS_ValidDOSName
*
* Return 1 if Unix file 'name' is also a valid MS-DOS name
* (i.e. contains only valid DOS chars, lower-case only, fits in 8.3 format).
* File name can be terminated by '\0', '\\' or '/'.
*/
static int DOSFS_ValidDOSName( const char *name, int ignore_case )
static const char invalid_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" INVALID_DOS_CHARS;
const char *invalid = ignore_case ? (invalid_chars + 26) : invalid_chars;
int len = 0;
if (*p == '.')
{
/* Check for "." and ".." */
p++;
if (*p == '.') p++;
/* All other names beginning with '.' are invalid */
return (IS_END_OF_NAME(*p));
}
while (!IS_END_OF_NAME(*p))
{
if (strchr( invalid, *p )) return 0; /* Invalid char */
if (*p == '.') break; /* Start of the extension */
if (++len > 8) return 0; /* Name too long */
p++;
}
if (*p != '.') return 1; /* End of name */
p++;
if (IS_END_OF_NAME(*p)) return 0; /* Empty extension not allowed */
len = 0;
while (!IS_END_OF_NAME(*p))
{
if (strchr( invalid, *p )) return 0; /* Invalid char */
if (*p == '.') return 0; /* Second extension not allowed */
if (++len > 3) return 0; /* Extension too long */
p++;
}
return 1;
}
/***********************************************************************
* 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.
BOOL32 DOSFS_ToDosFCBFormat( LPCSTR name, LPSTR buffer )
{
static const char invalid_chars[] = INVALID_DOS_CHARS;
const char *p = name;
int i;
/* Check for "." and ".." */
if (*p == '.')
{
p++;
strcpy( buffer, ". " );
if (*p == '.')
{
buffer[1] = '.';
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:
buffer[i] = toupper(*p);
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 '.':
case '?':
p++;
/* fall through */
case '*':
buffer[i] = '?';
break;
default:
buffer[i] = toupper(*p);
p++;
break;
}
}
buffer[11] = '\0';
}
/***********************************************************************
* DOSFS_ToDosDTAFormat
*
* Convert a file name from FCB to DTA format (name.ext, null-terminated)
* converting to upper-case in the process.
* File name can be terminated by '\0', '\\' or '/'.
static void DOSFS_ToDosDTAFormat( LPCSTR name, LPSTR buffer )
{
char *p;
memcpy( buffer, name, 8 );
for (p = buffer + 8; (p > buffer) && (p[-1] == ' '); p--);
*p++ = '.';
memcpy( p, name + 8, 3 );
for (p += 3; p[-1] == ' '; p--);
if (p[-1] == '.') p--;
*p = '\0';
}
/***********************************************************************
*
* Check a DOS file name against a mask (both in FCB format).
*/
static int DOSFS_MatchShort( const char *mask, const char *name )
{
int i;
for (i = 11; i > 0; i--, mask++, name++)
if ((*mask != '?') && (*mask != *name)) return 0;
return 1;
}
/***********************************************************************
* DOSFS_MatchLong
*
* Check a long file name against a mask.
*/
static int DOSFS_MatchLong( const char *mask, const char *name,
int case_sensitive )
{
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while (*name && *mask)
{
if (*mask == '*')
{
mask++;
while (*mask == '*') mask++; /* Skip consecutive '*' */
if (!*mask) return 1;
if (case_sensitive) while (*name && (*name != *mask)) name++;
else while (*name && (toupper(*name) != toupper(*mask))) name++;
if (!*name) return 0;
}
else if (*mask != '?')
{
if (case_sensitive)
{
if (*mask != *name) return 0;
}
else if (toupper(*mask) != toupper(*name)) return 0;
}
mask++;
name++;
}
return (!*name && !*mask);
}
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/***********************************************************************
* DOSFS_OpenDir
*/
static DOS_DIR *DOSFS_OpenDir( LPCSTR path )
{
DOS_DIR *dir = HeapAlloc( SystemHeap, 0, sizeof(*dir) );
if (!dir)
{
DOS_ERROR( ER_OutOfMemory, EC_OutOfResource, SA_Abort, EL_Memory );
return NULL;
}
#ifdef VFAT_IOCTL_READDIR_BOTH
/* Check if the VFAT ioctl is supported on this directory */
if ((dir->fd = open( path, O_RDONLY )) != -1)
{
if (ioctl( dir->fd, VFAT_IOCTL_READDIR_BOTH, (long)dir->dirent ) == -1)
{
close( dir->fd );
dir->fd = -1;
}
else
{
/* Set the file pointer back at the start of the directory */
lseek( dir->fd, 0, SEEK_SET );
dir->dir = NULL;
return dir;
}
}
#endif /* VFAT_IOCTL_READDIR_BOTH */
/* Now use the standard opendir/readdir interface */
if (!(dir->dir = opendir( path )))
{
HeapFree( SystemHeap, 0, dir );
return NULL;
}
return dir;
}
/***********************************************************************
* DOSFS_CloseDir
*/
static void DOSFS_CloseDir( DOS_DIR *dir )
{
#ifdef VFAT_IOCTL_READDIR_BOTH
if (dir->fd != -1) close( dir->fd );
#endif /* VFAT_IOCTL_READDIR_BOTH */
if (dir->dir) closedir( dir->dir );
HeapFree( SystemHeap, 0, dir );
}
/***********************************************************************
* DOSFS_ReadDir
*/
static BOOL32 DOSFS_ReadDir( DOS_DIR *dir, LPCSTR *long_name,
LPCSTR *short_name )
{
struct dirent *dirent;
#ifdef VFAT_IOCTL_READDIR_BOTH
if (dir->fd != -1)
{
if (ioctl( dir->fd, VFAT_IOCTL_READDIR_BOTH, (long)dir->dirent ) != -1) {
if (!dir->dirent[0].d_reclen) return FALSE;
if (!DOSFS_ToDosFCBFormat( dir->dirent[0].d_name, dir->short_name ))
dir->short_name[0] = '\0';
*short_name = dir->short_name;
if (dir->dirent[1].d_name[0]) *long_name = dir->dirent[1].d_name;
else *long_name = dir->dirent[0].d_name;
return TRUE;
}
}
#endif /* VFAT_IOCTL_READDIR_BOTH */
if (!(dirent = readdir( dir->dir ))) return FALSE;
*long_name = dirent->d_name;
*short_name = NULL;
return TRUE;
}
/***********************************************************************
* DOSFS_Hash
*
* Transform a Unix file name into a hashed DOS name. If the name is a valid
* DOS name, it is converted to upper-case; otherwise it is replaced by a
* hashed version that fits in 8.3 format.
* File name can be terminated by '\0', '\\' or '/'.
static void DOSFS_Hash( LPCSTR name, LPSTR buffer, BOOL32 dir_format,
BOOL32 ignore_case )
{
static const char invalid_chars[] = INVALID_DOS_CHARS "~.";
static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
const char *p, *ext;
char *dst;
unsigned short hash;
int i;
if (dir_format) strcpy( buffer, " " );
{
/* Check for '.' and '..' */
if (*name == '.')
{
buffer[0] = '.';
if (!dir_format) buffer[1] = buffer[2] = '\0';
if (name[1] == '.') buffer[1] = '.';
}
/* Simply copy the name, converting to uppercase */
for (dst = buffer; !IS_END_OF_NAME(*name) && (*name != '.'); name++)
*dst++ = toupper(*name);
if (*name == '.')
{
if (dir_format) dst = buffer + 8;
else *dst++ = '.';
for (name++; !IS_END_OF_NAME(*name); name++)
*dst++ = toupper(*name);
}
if (!dir_format) *dst = '\0';
return;
}
/* Compute the hash code of the file name */
/* If you know something about hash functions, feel free to */
/* insert a better algorithm here... */
if (ignore_case)
{
for (p = name, hash = 0xbeef; !IS_END_OF_NAME(p[1]); p++)
hash = (hash<<3) ^ (hash>>5) ^ tolower(*p) ^ (tolower(p[1]) << 8);
hash = (hash<<3) ^ (hash>>5) ^ tolower(*p); /* Last character*/
for (p = name, hash = 0xbeef; !IS_END_OF_NAME(p[1]); p++)
hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
}
/* Find last dot for start of the extension */
for (p = name+1, ext = NULL; !IS_END_OF_NAME(*p); p++)
if (*p == '.') ext = p;
if (ext && IS_END_OF_NAME(ext[1]))
ext = NULL; /* Empty extension ignored */
/* Copy first 4 chars, replacing invalid chars with '_' */
for (i = 4, p = name, dst = buffer; i > 0; i--, p++)
{
if (IS_END_OF_NAME(*p) || (p == ext)) break;
*dst++ = strchr( invalid_chars, *p ) ? '_' : toupper(*p);
}
/* Pad to 5 chars with '~' */
while (i-- >= 0) *dst++ = '~';
/* Insert hash code converted to 3 ASCII chars */
*dst++ = hash_chars[(hash >> 10) & 0x1f];
*dst++ = hash_chars[(hash >> 5) & 0x1f];
*dst++ = hash_chars[hash & 0x1f];
/* Copy the first 3 chars of the extension (if any) */
if (ext)
{
if (!dir_format) *dst++ = '.';
for (i = 3, ext++; (i > 0) && !IS_END_OF_NAME(*ext); i--, ext++)
*dst++ = strchr( invalid_chars, *ext ) ? '_' : toupper(*ext);
}
/***********************************************************************
* DOSFS_FindUnixName
*
* Find the Unix file name in a given directory that corresponds to
* a file name (either in Unix or DOS format).
* File name can be terminated by '\0', '\\' or '/'.
* Return TRUE if OK, FALSE if no file name matches.
*
* 'long_buf' must be at least 'long_len' characters long. If the long name
* turns out to be larger than that, the function returns FALSE.
* 'short_buf' must be at least 13 characters long.
BOOL32 DOSFS_FindUnixName( LPCSTR path, LPCSTR name, LPSTR long_buf,
INT32 long_len, LPSTR short_buf, BOOL32 ignore_case)
const char *p = strchr( name, '/' );
int len = p ? (int)(p - name) : strlen(name);
if ((p = strchr( name, '\\' ))) len = MIN( (int)(p - name), len );
if (long_len < len + 1) return FALSE;
if (!DOSFS_ToDosFCBFormat( name, dos_name )) dos_name[0] = '\0';
while ((ret = DOSFS_ReadDir( dir, &long_name, &short_name )))
{
DOSFS_Hash( long_name, tmp_buf, TRUE, ignore_case );
short_name = tmp_buf;
}
if (ret)
{
if (long_buf) strcpy( long_buf, long_name );
if (short_buf)
{
if (short_name)
DOSFS_ToDosDTAFormat( short_name, short_buf );
else
DOSFS_Hash( long_name, short_buf, FALSE, ignore_case );
}
path, name, long_name, short_buf ? short_buf : "***");
WARN(dosfs, "'%s' not found in '%s'\n", name, path);
}
/***********************************************************************
* Check if a DOS file name represents a DOS device and return the device.
const DOS_DEVICE *DOSFS_GetDevice( const char *name )
if (!name) return NULL; /* if FILE_DupUnixHandle was used */
if (name[0] && (name[1] == ':')) name += 2;
if ((p = strrchr( name, '/' ))) name = p + 1;
if ((p = strrchr( name, '\\' ))) name = p + 1;
for (i = 0; i < sizeof(DOSFS_Devices)/sizeof(DOSFS_Devices[0]); i++)
{
if (!lstrncmpi32A( dev, name, strlen(dev) ))
{
p = name + strlen( dev );
}
/***********************************************************************
* DOSFS_OpenDevice
*
* Open a DOS device. This might not map 1:1 into the UNIX device concept.
HFILE32 DOSFS_OpenDevice( const char *name, int unixmode )
if (!name) return NULL; /* if FILE_DupUnixHandle was used */
if ((p = strrchr( name, '/' ))) name = p + 1;
if ((p = strrchr( name, '\\' ))) name = p + 1;
for (i = 0; i < sizeof(DOSFS_Devices)/sizeof(DOSFS_Devices[0]); i++)
{
switch (unixmode) {
case O_RDONLY:
return GetStdHandle( STD_INPUT_HANDLE );
break;
case O_WRONLY:
return GetStdHandle( STD_OUTPUT_HANDLE );
break;
default:
if ((handle = FILE_Alloc( &file )) == INVALID_HANDLE_VALUE32)
return HFILE_ERROR32;
else {
file->unix_name = HEAP_strdupA( SystemHeap, 0, name );
return handle;
}
}
if (!strcmp(DOSFS_Devices[i].name,"HPSCAN")) {
if ((handle = FILE_Alloc( &file )) == INVALID_HANDLE_VALUE32)
return HFILE_ERROR32;
else {
file->unix_name = HEAP_strdupA( SystemHeap, 0, name );
return handle;
}
}
FIXME(dosfs,"device open %s not supported (yet)\n",DOSFS_Devices[i].name);
/***********************************************************************
* Get the drive specified by a given path name (DOS or Unix format).
MSG("Warning: %s not accessible from a DOS drive\n", *name );
/* Assume it really was a DOS name */
drive = DRIVE_GetCurrentDrive();
}
}
else drive = DRIVE_GetCurrentDrive();
if (!DRIVE_IsValid(drive))
{
DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
return drive;
}
/***********************************************************************
* Convert a file name (DOS or mixed DOS/Unix format) to a valid
* Unix name / short DOS name pair.
* Return FALSE if one of the path components does not exist. The last path
* component is only checked if 'check_last' is non-zero.
* The buffers pointed to by 'long_buf' and 'short_buf' must be
* at least MAX_PATHNAME_LEN long.
BOOL32 DOSFS_GetFullName( LPCSTR name, BOOL32 check_last, DOS_FULL_NAME *full )
name, check_last );
if ((full->drive = DOSFS_GetPathDrive( &name )) == -1) return FALSE;
flags = DRIVE_GetFlags( full->drive );
lstrcpyn32A( full->long_name, DRIVE_GetRoot( full->drive ),
sizeof(full->long_name) );
if (full->long_name[1]) root = full->long_name + strlen(full->long_name);
else root = full->long_name; /* root directory */
strcpy( full->short_name, "A:\\" );
full->short_name[0] += full->drive;
if ((*name == '\\') || (*name == '/')) /* Absolute path */
{
while ((*name == '\\') || (*name == '/')) name++;
}
lstrcpyn32A( root + 1, DRIVE_GetUnixCwd( full->drive ),
sizeof(full->long_name) - (root - full->long_name) - 1 );
lstrcpyn32A( full->short_name + 3, DRIVE_GetDosCwd( full->drive ),
sizeof(full->short_name) - 3 );
p_l = full->long_name[1] ? full->long_name + strlen(full->long_name)
: full->long_name;
p_s = full->short_name[3] ? full->short_name + strlen(full->short_name)
: full->short_name + 2;
/* Check for '.' and '..' */
if (*name == '.')
if (IS_END_OF_NAME(name[1]))
{
name++;
while ((*name == '\\') || (*name == '/')) name++;
continue;
}
else if ((name[1] == '.') && IS_END_OF_NAME(name[2]))
{
name += 2;
while ((*name == '\\') || (*name == '/')) name++;
while ((p_l > root) && (*p_l != '/')) p_l--;
while ((p_s > full->short_name + 2) && (*p_s != '\\')) p_s--;
*p_l = *p_s = '\0'; /* Remove trailing separator */
continue;
}
/* Make sure buffers are large enough */
if ((p_s >= full->short_name + sizeof(full->short_name) - 14) ||
(p_l >= full->long_name + sizeof(full->long_name) - 1))
{
DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
/* Get the long and short name matching the file name */
if ((found = DOSFS_FindUnixName( full->long_name, name, p_l + 1,
sizeof(full->long_name) - (p_l - full->long_name) - 1,
p_s + 1, !(flags & DRIVE_CASE_SENSITIVE) )))
*p_l++ = '/';
p_l += strlen(p_l);
*p_s++ = '\\';
p_s += strlen(p_s);
*p_l++ = '/';
*p_s++ = '\\';
while (!IS_END_OF_NAME(*name) &&
(p_s < full->short_name + sizeof(full->short_name) - 1) &&
(p_l < full->long_name + sizeof(full->long_name) - 1))
{
*p_s++ = tolower(*name);
/* If the drive is case-sensitive we want to create new */
/* files in lower-case otherwise we can't reopen them */
/* under the same short name. */
if (flags & DRIVE_CASE_SENSITIVE) *p_l++ = tolower(*name);
else *p_l++ = *name;
}
while ((*name == '\\') || (*name == '/')) name++;
}
DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
if (!full->long_name[0]) strcpy( full->long_name, "/" );
if (!full->short_name[2]) strcpy( full->short_name + 2, "\\" );
full->long_name, full->short_name );
return TRUE;
}
/***********************************************************************
DWORD WINAPI GetShortPathName32A( LPCSTR longpath, LPSTR shortpath,
DWORD shortlen )
{
DOS_FULL_NAME full_name;
/* FIXME: is it correct to always return a fully qualified short path? */
if (!DOSFS_GetFullName( longpath, TRUE, &full_name )) return 0;
lstrcpyn32A( shortpath, full_name.short_name, shortlen );
return strlen( full_name.short_name );
}
/***********************************************************************
* GetShortPathName32W (KERNEL32.272)
*/
DWORD WINAPI GetShortPathName32W( LPCWSTR longpath, LPWSTR shortpath,
DWORD shortlen )
{
DOS_FULL_NAME full_name;
DWORD ret = 0;
LPSTR longpathA = HEAP_strdupWtoA( GetProcessHeap(), 0, longpath );
/* FIXME: is it correct to always return a fully qualified short path? */
if (DOSFS_GetFullName( longpathA, TRUE, &full_name ))
{
ret = strlen( full_name.short_name );
lstrcpynAtoW( shortpath, full_name.short_name, shortlen );
}
HeapFree( GetProcessHeap(), 0, longpathA );
return ret;
}
/***********************************************************************
* GetLongPathName32A (KERNEL32.xxx)
*/
DWORD WINAPI GetLongPathName32A( LPCSTR shortpath, LPSTR longpath,
DWORD longlen )
{
DOS_FULL_NAME full_name;
/* FIXME: Is it correct to return a UNIX style path here? */
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if (!DOSFS_GetFullName( shortpath, TRUE, &full_name )) return 0;
lstrcpyn32A( longpath, full_name.long_name, longlen );
return strlen( full_name.long_name );
}
/***********************************************************************
* GetLongPathName32W (KERNEL32.269)
*/
DWORD WINAPI GetLongPathName32W( LPCWSTR shortpath, LPWSTR longpath,
DWORD longlen )
{
DOS_FULL_NAME full_name;
DWORD ret = 0;
LPSTR shortpathA = HEAP_strdupWtoA( GetProcessHeap(), 0, shortpath );
/* FIXME: is it correct to always return a fully qualified short path? */
if (DOSFS_GetFullName( shortpathA, TRUE, &full_name ))
{
ret = strlen( full_name.short_name );
lstrcpynAtoW( longpath, full_name.long_name, longlen );
}
HeapFree( GetProcessHeap(), 0, shortpathA );
return ret;
}
/***********************************************************************
* DOSFS_DoGetFullPathName
static DWORD DOSFS_DoGetFullPathName( LPCSTR name, DWORD len, LPSTR result,
BOOL32 unicode )
if ((drive = DOSFS_GetPathDrive( &name )) == -1) return 0;
if (IS_END_OF_NAME(*name) && (*name)) /* Absolute path */
{
while ((*name == '\\') || (*name == '/')) name++;
}
lstrcpyn32A( p, DRIVE_GetDosCwd(drive), sizeof(buffer) - 3 );
if (IS_END_OF_NAME(name[1]))
{
name++;
while ((*name == '\\') || (*name == '/')) name++;
continue;
}
else if ((name[1] == '.') && IS_END_OF_NAME(name[2]))
{
name += 2;
while ((*name == '\\') || (*name == '/')) name++;
while ((p > buffer + 2) && (*p != '\\')) p--;
*p = '\0'; /* Remove trailing separator */
continue;
}
{
DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
while (!IS_END_OF_NAME(*name) && (p < buffer + sizeof(buffer) - 1))
*p++ = *name++;
*p = '\0';
while ((*name == '\\') || (*name == '/')) name++;
}
if (!buffer[2])
{
buffer[2] = '\\';
buffer[3] = '\0';
}
if (!(DRIVE_GetFlags(drive) & DRIVE_CASE_PRESERVING))
CharUpper32A( buffer );
if (unicode) lstrcpynAtoW( (LPWSTR)result, buffer, len );
else lstrcpyn32A( result, buffer, len );
return strlen(buffer);
}
/***********************************************************************
* GetFullPathName32A (KERNEL32.272)
*/
DWORD WINAPI GetFullPathName32A( LPCSTR name, DWORD len, LPSTR buffer,
LPSTR *lastpart )
{
DWORD ret = DOSFS_DoGetFullPathName( name, len, buffer, FALSE );
if (ret && lastpart)
{
LPSTR p = buffer + strlen(buffer);
while ((p > buffer + 2) && (*p != '\\')) p--;
*lastpart = p + 1;
}