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