src/libcaptive/client/directory.c

   1 /* $Id$
   2  * captive vfs 'directory' interface to reactos
   3  * Copyright (C) 2002-2003 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include "captive/client-directory.h"   /* self */
  23 #include "directory.h"  /* self-priv */
  24 #include "lib.h"
  25 #include <glib/gmessages.h>
  26 #include "captive/unicode.h"
  27 #include "reactos/ntos/types.h" /* for HANDLE */
  28 #include "reactos/ddk/iotypes.h"        /* for IO_STATUS_BLOCK */
  29 #include "reactos/ddk/iofuncs.h"        /* for IoCreateFile() */
  30 #include "captive/sandbox.h"
  31 #include "result.h"
  32
  33
  34 static gpointer captive_directory_object_parent_class=NULL;
  35
  36
  37 static GnomeVFSResult captive_directory_close(CaptiveDirectoryObject *captive_directory_object);
  38
  39 static void captive_directory_object_finalize(CaptiveDirectoryObject *captive_directory_object)
  40 {
  41 GnomeVFSResult errvfsresult;
  42
  43         g_return_if_fail(captive_directory_object!=NULL);
  44
  45         errvfsresult=captive_directory_close(captive_directory_object);
  46         g_assert(errvfsresult==GNOME_VFS_OK);
  47
  48         G_OBJECT_CLASS(captive_directory_object_parent_class)->finalize((GObject *)captive_directory_object);
  49 }
  50
  51
  52 static void captive_directory_object_class_init(CaptiveDirectoryObjectClass *class)
  53 {
  54 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
  55
  56         captive_directory_object_parent_class=g_type_class_ref(G_TYPE_OBJECT);
  57         gobject_class->finalize=(void (*)(GObject *object))captive_directory_object_finalize;
  58 }
  59
  60
  61 static void captive_directory_object_init(CaptiveDirectoryObject *captive_directory_object)
  62 {
  63         captive_directory_object->dir_Handle=NULL;
  64         captive_directory_object->read_first=TRUE;
  65         captive_directory_object->CaptiveDirectoryObject_QueryDirectory_type=
  66                         CaptiveDirectoryObject_QueryDirectory_type_FileIdBothDirInformation;
  67 }
  68
  69
  70 GType captive_directory_object_get_type(void)
  71 {
  72 static GType captive_directory_object_type=0;
  73
  74         if (!captive_directory_object_type) {
  75 static const GTypeInfo captive_directory_object_info={
  76                                 sizeof(CaptiveDirectoryObjectClass),
  77                                 NULL,   /* base_init */
  78                                 NULL,   /* base_finalize */
  79                                 (GClassInitFunc)captive_directory_object_class_init,
  80                                 NULL,   /* class_finalize */
  81                                 NULL,   /* class_data */
  82                                 sizeof(CaptiveDirectoryObject),
  83                                 5,      /* n_preallocs */
  84                                 (GInstanceInitFunc)captive_directory_object_init,
  85                                 };
  86
  87                 captive_directory_object_type=g_type_register_static(G_TYPE_OBJECT,
  88                                 "CaptiveDirectoryObject",&captive_directory_object_info,0);
  89                 }
  90
  91         return captive_directory_object_type;
  92 }
  93
  94
  95 static GnomeVFSResult captive_directory_new_internal(CaptiveDirectoryObject **captive_directory_object_return,
  96                 const gchar *pathname,gboolean create,guint create_perm)
  97 {
  98 GnomeVFSResult errvfsresult;
  99 OBJECT_ATTRIBUTES dir_ObjectAttributes;
 100 HANDLE dir_Handle;
 101 IO_STATUS_BLOCK dir_IoStatusBlock;
 102 NTSTATUS err;
 103 CaptiveDirectoryObject *captive_directory_object;
 104
 105         if (CAPTIVE_IS_SANDBOX_PARENT())
 106                 return captive_sandbox_parent_directory_new_open(captive_directory_object_return,pathname);
 107
 108         g_return_val_if_fail(captive_directory_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 109         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 110
 111         *captive_directory_object_return=NULL;
 112
 113         errvfsresult=captive_ObjectAttributes_init(pathname,&dir_ObjectAttributes);
 114         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 115
 116         /* wanted: * IoCreateFile()->ObCreateObject(,,,IoFileObjectType)->
 117          * ->(IoFileObjectType->Create==IopCreateFile)()->IoMountVolume()
 118          */
 119         err=IoCreateFile(
 120                         &dir_Handle,    /* FileHandle */
 121                         FILE_LIST_DIRECTORY,    /* DesiredAccess */
 122                         &dir_ObjectAttributes,  /* ObjectAttributes */
 123                         &dir_IoStatusBlock,     /* IoStatusBlock */
 124                         NULL,   /* AllocationSize; ignored for open */
 125                         (!create || create_perm&0200 ? FILE_ATTRIBUTE_NORMAL: FILE_ATTRIBUTE_READONLY), /* FileAttributes; ignored for open */
 126                         (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE),       /* ShareAccess; 0 means exclusive */
 127                         (!create ? FILE_OPEN : FILE_CREATE),    /* CreateDisposition */
 128                         /* FILE_SYNCHRONOUS_IO_{,NON}ALERT: We need to allow W32 filesystem
 129                          * any waits to not to let it return STATUS_CANT_WAIT us.
 130                          * Alertability should have only effect on asynchronous events
 131                          * from KeWaitForSingleObject() by setting/clearing its parameter 'Alertable'.
 132                          */
 133                         FILE_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_ALERT,  /* CreateOptions */
 134                         NULL,   /* EaBuffer */
 135                         0,      /* EaLength */
 136                         CreateFileTypeNone,     /* CreateFileType */
 137                         NULL,   /* ExtraCreateParameters */
 138                         0);     /* Options */
 139         g_free(dir_ObjectAttributes.ObjectName);        /* left from captive_gnomevfs_uri_parent_init() */
 140         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(dir_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 141         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 142                 return errvfsresult;
 143         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 144         g_return_val_if_fail(dir_IoStatusBlock.Information
 145                                         ==(!create ? FILE_OPENED : FILE_CREATED),
 146                         GNOME_VFS_ERROR_GENERIC);
 147
 148         captive_directory_object=g_object_new(
 149                         CAPTIVE_DIRECTORY_TYPE_OBJECT,  /* object_type */
 150                         NULL);  /* first_property_name; FIXME: support properties */
 151
 152         captive_directory_object->dir_Handle=dir_Handle;
 153
 154         *captive_directory_object_return=captive_directory_object;
 155         return GNOME_VFS_OK;
 156 }
 157
 158
 159 GnomeVFSResult captive_directory_new_open(CaptiveDirectoryObject **captive_directory_object_return,
 160                 const gchar *pathname)
 161 {
 162         g_return_val_if_fail(captive_directory_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 163         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 164
 165         return captive_directory_new_internal(captive_directory_object_return,pathname,
 166                         FALSE,  /* create */
 167                         0);     /* create_perm; ignored */
 168 }
 169
 170
 171 GnomeVFSResult captive_directory_new_make(CaptiveDirectoryObject **captive_directory_object_return,
 172                 const gchar *pathname,guint perm)
 173 {
 174         g_return_val_if_fail(captive_directory_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 175         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 176
 177         return captive_directory_new_internal(captive_directory_object_return,pathname,
 178                         TRUE,   /* create */
 179                         perm);  /* create_perm; ignored */
 180 }
 181
 182
 183 static GnomeVFSResult FileIdBothDirInformation_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 184                 FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation,IO_STATUS_BLOCK *IoStatusBlock)
 185 {
 186 UNICODE_STRING FileName_UnicodeString;
 187 BOOLEAN errBOOLEAN;
 188 ULONG tmp_ULONG;
 189
 190         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_GENERIC);
 191         g_return_val_if_fail(FileIdBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 192         g_return_val_if_fail(IoStatusBlock!=NULL,GNOME_VFS_ERROR_GENERIC);
 193
 194         g_return_val_if_fail(NT_SUCCESS(IoStatusBlock->Status),GNOME_VFS_ERROR_GENERIC);
 195         /* do not exceed the returned buffer by this record; Redundant now, see below. */
 196         g_assert((gpointer)(((char *)FileIdBothDirInformation)+FileIdBothDirInformation->NextEntryOffset)
 197                         <=(gpointer)(((char *)FileIdBothDirInformation)+IoStatusBlock->Information));
 198         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 199         g_assert(FileIdBothDirInformation->NextEntryOffset==0);
 200
 201         file_info->valid_fields=0;
 202
 203         FileName_UnicodeString.Length=FileIdBothDirInformation->FileNameLength;
 204         FileName_UnicodeString.MaximumLength=FileIdBothDirInformation->FileNameLength
 205                         +sizeof(*FileIdBothDirInformation->FileName);   /* 0-terminator */
 206         g_assert((gpointer)(((char *)FileIdBothDirInformation->FileName)+FileName_UnicodeString.Length)
 207                         <=(gpointer)(((char *)FileIdBothDirInformation)+IoStatusBlock->Information));
 208                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 209         FileIdBothDirInformation->FileName[FileIdBothDirInformation->FileNameLength
 210                         /sizeof(*FileIdBothDirInformation->FileName)]=0;        /* 0-terminate it */
 211         FileName_UnicodeString.Buffer=FileIdBothDirInformation->FileName;
 212         file_info->name=captive_UnicodeString_to_utf8_malloc(&FileName_UnicodeString);
 213         /* '->name' assumed for 'file_info->valid_fields' */
 214
 215         /* FIXME: What is 'FILE_ATTRIBUTE_NORMAL'? */
 216         switch (FileIdBothDirInformation->FileAttributes & (0
 217                         | FILE_ATTRIBUTE_DIRECTORY
 218                         | FILE_ATTRIBUTE_DEVICE)) {
 219                 case 0:                        file_info->type=GNOME_VFS_FILE_TYPE_REGULAR;   break;
 220                 case FILE_ATTRIBUTE_DIRECTORY: file_info->type=GNOME_VFS_FILE_TYPE_DIRECTORY; break;
 221                 case FILE_ATTRIBUTE_DEVICE:    file_info->type=GNOME_VFS_FILE_TYPE_SOCKET;
 222                         /* or GNOME_VFS_FILE_TYPE_CHARACTER_DEVICE or GNOME_VFS_FILE_TYPE_BLOCK_DEVICE ? */
 223                         break;
 224                 default:                       file_info->type=GNOME_VFS_FILE_TYPE_UNKNOWN;   break;
 225                 }
 226         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
 227
 228         /* we use 0600 for r/w files, 0400 for FILE_ATTRIBUTE_READONLY */
 229         file_info->permissions=GNOME_VFS_PERM_USER_READ;
 230         if (file_info->type==GNOME_VFS_FILE_TYPE_DIRECTORY)
 231                 file_info->permissions|=GNOME_VFS_PERM_USER_EXEC;
 232         if (!(FileIdBothDirInformation->FileAttributes & FILE_ATTRIBUTE_READONLY))
 233                 file_info->permissions|=GNOME_VFS_PERM_USER_WRITE;
 234         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS;
 235
 236         file_info->size=FileIdBothDirInformation->EndOfFile.QuadPart;
 237         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_SIZE;
 238
 239         file_info->block_count=FileIdBothDirInformation->AllocationSize.QuadPart/512;
 240         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_BLOCK_COUNT;
 241
 242         file_info->flags=GNOME_VFS_FILE_FLAGS_LOCAL;
 243         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_FLAGS;
 244
 245         if (FileIdBothDirInformation->LastAccessTime.QuadPart) {        /* it may be 0 if not set */
 246                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileIdBothDirInformation->LastAccessTime,&tmp_ULONG);
 247                 g_assert(errBOOLEAN==TRUE);
 248                 file_info->atime=tmp_ULONG;
 249                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_ATIME;
 250                 }
 251
 252         /* it may be 0 if not set */
 253         if (FileIdBothDirInformation->LastWriteTime.QuadPart || FileIdBothDirInformation->ChangeTime.QuadPart) {
 254                 errBOOLEAN=RtlTimeToSecondsSince1970(
 255                                 /* take the more recent (==bigger) time: */
 256                                 (FileIdBothDirInformation->LastWriteTime.QuadPart > FileIdBothDirInformation->ChangeTime.QuadPart
 257                                                 ? &FileIdBothDirInformation->LastWriteTime : &FileIdBothDirInformation->ChangeTime),
 258                                 &tmp_ULONG);
 259                 g_assert(errBOOLEAN==TRUE);
 260                 file_info->mtime=tmp_ULONG;
 261                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_MTIME;
 262                 }
 263
 264         if (FileIdBothDirInformation->CreationTime.QuadPart) {  /* it may be 0 if not set */
 265                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileIdBothDirInformation->CreationTime,&tmp_ULONG);
 266                 g_assert(errBOOLEAN==TRUE);
 267                 file_info->ctime=tmp_ULONG;
 268                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_CTIME;
 269                 }
 270
 271         return GNOME_VFS_OK;
 272 }
 273
 274
 275 static GnomeVFSResult FileBothDirInformation_to_FileIdBothDirInformation(FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation,
 276                 FILE_BOTH_DIR_INFORMATION *FileBothDirInformation,IO_STATUS_BLOCK *IoStatusBlock)
 277 {
 278 static LARGE_INTEGER FileId_counter;
 279
 280         g_return_val_if_fail(FileIdBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 281         g_return_val_if_fail(FileBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 282         g_return_val_if_fail(IoStatusBlock!=NULL,GNOME_VFS_ERROR_GENERIC);
 283
 284         g_return_val_if_fail(NT_SUCCESS(IoStatusBlock->Status),GNOME_VFS_ERROR_GENERIC);
 285         /* do not exceed the returned buffer by this record; Redundant now, see below. */
 286         g_assert((gpointer)(((char *)FileBothDirInformation)+FileBothDirInformation->NextEntryOffset)
 287                         <=(gpointer)(((char *)FileBothDirInformation)+IoStatusBlock->Information));
 288         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 289         g_assert(FileBothDirInformation->NextEntryOffset==0);
 290
 291         g_assert((gpointer)(((char *)FileBothDirInformation->FileName)+FileBothDirInformation->FileNameLength)
 292                         <=(gpointer)(((char *)FileBothDirInformation)+IoStatusBlock->Information));
 293                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 294         memcpy(FileIdBothDirInformation->FileName,FileBothDirInformation->FileName,
 295                         FileBothDirInformation->FileNameLength);
 296
 297         /* NextEntryOffset already handled */
 298         FileIdBothDirInformation->FileIndex      =FileBothDirInformation->FileIndex;
 299         FileIdBothDirInformation->CreationTime   =FileBothDirInformation->CreationTime;
 300         FileIdBothDirInformation->LastAccessTime =FileBothDirInformation->LastAccessTime;
 301         FileIdBothDirInformation->LastWriteTime  =FileBothDirInformation->LastWriteTime;
 302         FileIdBothDirInformation->ChangeTime     =FileBothDirInformation->ChangeTime;
 303         FileIdBothDirInformation->EndOfFile      =FileBothDirInformation->EndOfFile;
 304         FileIdBothDirInformation->AllocationSize =FileBothDirInformation->AllocationSize;
 305         FileIdBothDirInformation->FileAttributes =FileBothDirInformation->FileAttributes;
 306         FileIdBothDirInformation->FileNameLength =FileBothDirInformation->FileNameLength;
 307         FileIdBothDirInformation->EaSize         =FileBothDirInformation->EaSize;
 308         FileIdBothDirInformation->ShortNameLength=FileBothDirInformation->ShortNameLength;
 309         g_assert(sizeof(FileIdBothDirInformation->ShortName)==sizeof(FileBothDirInformation->ShortName));
 310         memcpy(FileIdBothDirInformation->ShortName,FileBothDirInformation->ShortName,
 311                         sizeof(FileBothDirInformation->ShortName));
 312         /* FIXME: Register filenames for uniqueness;
 313          * Not needed now as 'FileId' field not used by libcaptive anywhere anyway.
 314          */
 315         FileIdBothDirInformation->FileId.QuadPart=FileId_counter.QuadPart++;
 316         /* FileName already handled */
 317
 318         IoStatusBlock->Information=sizeof(*FileIdBothDirInformation)+FileIdBothDirInformation->FileNameLength;
 319         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 320         FileIdBothDirInformation->NextEntryOffset=0;
 321
 322         return GNOME_VFS_OK;
 323 }
 324
 325
 326 static GnomeVFSResult captive_directory_close(CaptiveDirectoryObject *captive_directory_object)
 327 {
 328 NTSTATUS err;
 329 HANDLE dir_Handle;
 330
 331         if (CAPTIVE_IS_SANDBOX_PARENT())
 332                 return captive_sandbox_parent_directory_close(captive_directory_object);
 333
 334         g_return_val_if_fail(captive_directory_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 335         g_return_val_if_fail(captive_directory_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);        /* already closed */
 336
 337         dir_Handle=captive_directory_object->dir_Handle;
 338         captive_directory_object->dir_Handle=NULL;
 339         err=NtClose(dir_Handle);
 340         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 341
 342         return GNOME_VFS_OK;
 343 }
 344
 345
 346 GnomeVFSResult captive_directory_read(CaptiveDirectoryObject *captive_directory_object,GnomeVFSFileInfo *file_info)
 347 {
 348 NTSTATUS err;
 349 IO_STATUS_BLOCK dir_IoStatusBlock;
 350 FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation;
 351 FILE_BOTH_DIR_INFORMATION *FileBothDirInformation;
 352 GnomeVFSResult errvfsresult;
 353
 354         if (CAPTIVE_IS_SANDBOX_PARENT())
 355                 return captive_sandbox_parent_directory_read(captive_directory_object,file_info);
 356
 357         g_return_val_if_fail(captive_directory_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 358         g_return_val_if_fail(captive_directory_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 359         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 360
 361         FileIdBothDirInformation=(void *)captive_directory_object->QueryDirectory_buf.FileIdBothDirInformation;
 362 retry:
 363         switch (captive_directory_object->CaptiveDirectoryObject_QueryDirectory_type) {
 364
 365                 case CaptiveDirectoryObject_QueryDirectory_type_FileIdBothDirInformation:
 366                         err=NtQueryDirectoryFile(
 367                                         captive_directory_object->dir_Handle,   /* FileHandle */
 368                                         NULL,   /* PEvent; completion signalling; optional */
 369                                         NULL,   /* ApcRoutine; optional */
 370                                         NULL,   /* ApcContext; optional */
 371                                         &dir_IoStatusBlock,     /* IoStatusBlock */
 372                                         (gpointer)captive_directory_object->QueryDirectory_buf.FileIdBothDirInformation,        /* FileInformation */
 373                                         sizeof(captive_directory_object->QueryDirectory_buf.FileIdBothDirInformation)   /* Length */
 374                                                         -sizeof(*FileIdBothDirInformation->FileName),   /* reserve space for 0-terminator */
 375                                         FileIdBothDirectoryInformation, /* FileInformationClass; =>FILE_ID_BOTH_DIR_INFORMATION */
 376                                         TRUE,   /* ReturnSingleEntry */
 377                                         NULL,   /* FileName; wildcards possible; optional */
 378                                         captive_directory_object->read_first);  /* RestartScan */
 379                         if (err==STATUS_NO_SUCH_FILE) {
 380                                 /* 'FileIdBothDirInformation' not supported at least by ext2fsd.sys.
 381                                  * Emulate it from 'FileBothDirectoryInformation' here.
 382                                  */
 383                                 captive_directory_object->CaptiveDirectoryObject_QueryDirectory_type=
 384                                                 CaptiveDirectoryObject_QueryDirectory_type_FileBothDirInformation;
 385                                 goto retry;
 386                                 }
 387
 388                         captive_directory_object->read_first=FALSE;
 389                         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 390                                 return errvfsresult;
 391                         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 392                         break;
 393
 394                 case CaptiveDirectoryObject_QueryDirectory_type_FileBothDirInformation:
 395                         FileBothDirInformation=(void *)captive_directory_object->QueryDirectory_buf.FileBothDirInformation;
 396                         /* SL_INDEX_SPECIFIED is forbidden for ext2fsd.sys-V0.10A although
 397                          * IIRC it was required for the native W32 filesystems.
 398                          * Fortunately 'FileBothDirInformation' is just a workaround for ext2fsd.sys-V0.10A
 399                          * which is not used for the native W32 filesystems and therefore it should be safe.
 400                          * WARNING: Hack with 'FileIndex==0' to prevent SL_INDEX_SPECIFIED is just libcaptive
 401                          * specific hack of reactos! See also NtQueryDirectoryFile().
 402                          */
 403                         FileBothDirInformation->FileIndex=0;
 404                         err=NtQueryDirectoryFile(
 405                                         captive_directory_object->dir_Handle,   /* FileHandle */
 406                                         NULL,   /* PEvent; completion signalling; optional */
 407                                         NULL,   /* ApcRoutine; optional */
 408                                         NULL,   /* ApcContext; optional */
 409                                         &dir_IoStatusBlock,     /* IoStatusBlock */
 410                                         (gpointer)captive_directory_object->QueryDirectory_buf.FileBothDirInformation,  /* FileInformation */
 411                                         sizeof(captive_directory_object->QueryDirectory_buf.FileBothDirInformation)     /* Length */
 412                                                         -sizeof(*FileBothDirInformation->FileName),     /* reserve space for 0-terminator */
 413                                         FileBothDirectoryInformation,   /* FileInformationClass; =>FILE_BOTH_DIR_INFORMATION */
 414                                         TRUE,   /* ReturnSingleEntry */
 415                                         NULL,   /* FileName; wildcards possible; optional */
 416                                         captive_directory_object->read_first);  /* RestartScan */
 417
 418                         captive_directory_object->read_first=FALSE;
 419                         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 420                                 return errvfsresult;
 421                         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 422
 423                         errvfsresult=FileBothDirInformation_to_FileIdBothDirInformation(FileIdBothDirInformation,FileBothDirInformation,
 424                                         &dir_IoStatusBlock);
 425                         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 426                         break;
 427
 428                 default: g_assert_not_reached();
 429                 }
 430
 431         errvfsresult=FileIdBothDirInformation_to_GnomeVFSFileInfo(file_info,FileIdBothDirInformation,
 432                         &dir_IoStatusBlock);
 433         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 434
 435         return GNOME_VFS_OK;
 436 }
 437
 438
 439 GnomeVFSResult captive_directory_remove(CaptiveDirectoryObject *captive_directory_object)
 440 {
 441 NTSTATUS err;
 442 FILE_DISPOSITION_INFORMATION FileDispositionInformation_struct;
 443 IO_STATUS_BLOCK dir_IoStatusBlock;
 444 GnomeVFSResult errvfsresult;
 445
 446         g_return_val_if_fail(captive_directory_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 447         g_return_val_if_fail(captive_directory_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 448
 449         FileDispositionInformation_struct.DoDeleteFile=TRUE;
 450
 451         err=NtSetInformationFile(
 452                         captive_directory_object->dir_Handle,   /* FileHandle */
 453                         &dir_IoStatusBlock,     /* IoStatusBlock */
 454                         &FileDispositionInformation_struct,     /* FileInformation */
 455                         sizeof(FileDispositionInformation_struct),      /* Length */
 456                         FileDispositionInformation);    /* FileInformationClass */
 457         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 458                 return errvfsresult;
 459         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 460
 461         return GNOME_VFS_OK;
 462 }