src/libcaptive/client/directory-slave.c

   1 /* $Id$
   2  * captive vfs 'directory' interface to reactos of sandbox slave
   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 "directory-slave.h"    /* self */
  23 #include "captive/client-directory.h"   /* for CaptiveDirectoryObject */
  24 #include "directory.h"  /* for CaptiveDirectoryObject priv */
  25 #include "lib.h"
  26 #include <glib/gmessages.h>
  27 #include "captive/unicode.h"
  28 #include "reactos/ntos/types.h" /* for HANDLE */
  29 #include "reactos/ddk/iotypes.h"        /* for IO_STATUS_BLOCK */
  30 #include "reactos/ddk/iofuncs.h"        /* for IoCreateFile() */
  31 #include "result.h"
  32 #include "captive/leave.h"
  33 #include "captive/usecount.h"
  34 #include "vfs.h"
  35 #include "vfs-slave.h"
  36
  37
  38 static gpointer captive_directory_slave_object_parent_class=NULL;
  39
  40 static GnomeVFSResult captive_directory_slave_close(CaptiveDirectoryObject *captive_directory_object);
  41 static GnomeVFSResult captive_directory_slave_read
  42                 (CaptiveDirectoryObject *captive_directory_object,GnomeVFSFileInfo *file_info);
  43 static GnomeVFSResult captive_directory_slave_remove(CaptiveDirectoryObject *captive_directory_object);
  44
  45
  46 static void captive_directory_slave_object_finalize(CaptiveDirectorySlaveObject *captive_directory_slave_object)
  47 {
  48         g_return_if_fail(captive_directory_slave_object!=NULL);
  49
  50         captive_directory_slave_close(CAPTIVE_DIRECTORY_OBJECT(captive_directory_slave_object));        /* errors ignored */
  51
  52         G_OBJECT_CLASS(captive_directory_slave_object_parent_class)->finalize((GObject *)captive_directory_slave_object);
  53 }
  54
  55
  56 static void captive_directory_slave_object_class_init(CaptiveDirectorySlaveObjectClass *class)
  57 {
  58 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
  59 CaptiveDirectoryObjectClass *captive_directory_object_class=CAPTIVE_DIRECTORY_OBJECT_CLASS(class);
  60
  61         captive_directory_slave_object_parent_class=g_type_class_ref(g_type_parent(G_TYPE_FROM_CLASS(class)));
  62         gobject_class->finalize=(void (*)(GObject *object))captive_directory_slave_object_finalize;
  63         captive_directory_object_class->read=captive_directory_slave_read;
  64         captive_directory_object_class->remove=captive_directory_slave_remove;
  65 }
  66
  67
  68 static void captive_directory_slave_object_init(CaptiveDirectorySlaveObject *captive_directory_slave_object)
  69 {
  70         captive_directory_slave_object->dir_Handle=NULL;
  71         captive_directory_slave_object->read_first=TRUE;
  72         captive_directory_slave_object->CaptiveDirectorySlaveObject_QueryDirectory_type=
  73                         CaptiveDirectorySlaveObject_QueryDirectory_type_FileIdBothDirInformation;
  74 }
  75
  76
  77 GType captive_directory_slave_object_get_type(void)
  78 {
  79 static GType captive_directory_slave_object_type=0;
  80
  81         if (!captive_directory_slave_object_type) {
  82 static const GTypeInfo captive_directory_slave_object_info={
  83                                 sizeof(CaptiveDirectorySlaveObjectClass),
  84                                 NULL,   /* base_init */
  85                                 NULL,   /* base_finalize */
  86                                 (GClassInitFunc)captive_directory_slave_object_class_init,
  87                                 NULL,   /* class_finalize */
  88                                 NULL,   /* class_data */
  89                                 sizeof(CaptiveDirectorySlaveObject),
  90                                 5,      /* n_preallocs */
  91                                 (GInstanceInitFunc)captive_directory_slave_object_init,
  92                                 };
  93
  94                 captive_directory_slave_object_type=g_type_register_static(CAPTIVE_DIRECTORY_TYPE_OBJECT,
  95                                 "CaptiveDirectorySlaveObject",&captive_directory_slave_object_info,0);
  96                 }
  97
  98         return captive_directory_slave_object_type;
  99 }
 100
 101
 102 static GnomeVFSResult captive_directory_slave_new_internal
 103                 (CaptiveDirectorySlaveObject *captive_directory_slave_object,const gchar *pathname,gboolean create,guint create_perm)
 104 {
 105 GnomeVFSResult errvfsresult;
 106 OBJECT_ATTRIBUTES dir_ObjectAttributes;
 107 HANDLE dir_Handle;
 108 IO_STATUS_BLOCK dir_IoStatusBlock;
 109 NTSTATUS err;
 110
 111         g_return_val_if_fail(captive_directory_slave_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 112         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 113
 114         errvfsresult=captive_ObjectAttributes_init(pathname,&dir_ObjectAttributes);
 115         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 116
 117         /* wanted: * IoCreateFile()->ObCreateObject(,,,IoFileObjectType)->
 118          * ->(IoFileObjectType->Create==IopCreateFile)()->IoMountVolume()
 119          */
 120         err=IoCreateFile(
 121                         &dir_Handle,    /* FileHandle */
 122                         FILE_LIST_DIRECTORY,    /* DesiredAccess */
 123                         &dir_ObjectAttributes,  /* ObjectAttributes */
 124                         &dir_IoStatusBlock,     /* IoStatusBlock */
 125                         NULL,   /* AllocationSize; ignored for open */
 126                         (!create || create_perm&0200 ? FILE_ATTRIBUTE_NORMAL: FILE_ATTRIBUTE_READONLY), /* FileAttributes; ignored for open */
 127                         (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE),       /* ShareAccess; 0 means exclusive */
 128                         (!create ? FILE_OPEN : FILE_CREATE),    /* CreateDisposition */
 129                         /* FILE_SYNCHRONOUS_IO_{,NON}ALERT: We need to allow W32 filesystem
 130                          * any waits to not to let it return STATUS_CANT_WAIT us.
 131                          * Alertability should have only effect on asynchronous events
 132                          * from KeWaitForSingleObject() by setting/clearing its parameter 'Alertable'.
 133                          */
 134                         FILE_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_ALERT,  /* CreateOptions */
 135                         NULL,   /* EaBuffer */
 136                         0,      /* EaLength */
 137                         CreateFileTypeNone,     /* CreateFileType */
 138                         NULL,   /* ExtraCreateParameters */
 139                         0);     /* Options */
 140         g_free(dir_ObjectAttributes.ObjectName);        /* left from captive_gnomevfs_uri_parent_init() */
 141         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(dir_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 142         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 143                 return errvfsresult;
 144         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 145         g_return_val_if_fail(dir_IoStatusBlock.Information
 146                                         ==(!create ? FILE_OPENED : FILE_CREATED),
 147                         GNOME_VFS_ERROR_GENERIC);
 148
 149         captive_directory_slave_object->dir_Handle=dir_Handle;
 150
 151         return GNOME_VFS_OK;
 152 }
 153
 154
 155 GnomeVFSResult captive_directory_slave_new_open(CaptiveDirectoryObject **captive_directory_object_return,
 156                 CaptiveVfsObject *captive_vfs_object,const gchar *pathname)
 157 {
 158 GnomeVFSResult r;
 159 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 160
 161         g_return_val_if_fail(captive_directory_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 162         g_return_val_if_fail(CAPTIVE_VFS_SLAVE_IS_OBJECT(captive_vfs_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 163         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 164
 165         captive_directory_slave_object=g_object_new(
 166                         CAPTIVE_DIRECTORY_SLAVE_TYPE_OBJECT,    /* object_type */
 167                         NULL);  /* first_property_name; FIXME: support properties */
 168
 169         captive_directory_init(CAPTIVE_DIRECTORY_OBJECT(captive_directory_slave_object),captive_vfs_object);
 170
 171         *captive_directory_object_return=CAPTIVE_DIRECTORY_OBJECT(captive_directory_slave_object);
 172
 173         r=captive_directory_slave_new_internal(captive_directory_slave_object,pathname,
 174                         FALSE,  /* create */
 175                         0);     /* create_perm; ignored */
 176
 177         captive_leave();
 178         if (r==GNOME_VFS_OK)
 179                 captive_usecount(+1);
 180         else {
 181                 g_object_unref(captive_directory_slave_object);
 182                 *captive_directory_object_return=NULL;
 183                 }
 184         return r;
 185 }
 186
 187
 188 GnomeVFSResult captive_directory_slave_new_make(CaptiveDirectoryObject **captive_directory_object_return,
 189                 CaptiveVfsObject *captive_vfs_object,const gchar *pathname,guint perm)
 190 {
 191 GnomeVFSResult r;
 192 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 193
 194         g_return_val_if_fail(captive_directory_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 195         g_return_val_if_fail(CAPTIVE_VFS_SLAVE_IS_OBJECT(captive_vfs_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 196         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 197
 198         captive_directory_slave_object=g_object_new(
 199                         CAPTIVE_DIRECTORY_SLAVE_TYPE_OBJECT,    /* object_type */
 200                         NULL);  /* first_property_name; FIXME: support properties */
 201
 202         captive_directory_init(CAPTIVE_DIRECTORY_OBJECT(captive_directory_slave_object),captive_vfs_object);
 203
 204         *captive_directory_object_return=CAPTIVE_DIRECTORY_OBJECT(captive_directory_slave_object);
 205
 206         r=captive_directory_slave_new_internal(captive_directory_slave_object,pathname,
 207                         TRUE,   /* create */
 208                         perm);  /* create_perm; ignored */
 209
 210         captive_leave();
 211         if (r==GNOME_VFS_OK)
 212                 captive_usecount(+1);
 213         else {
 214                 g_object_unref(captive_directory_slave_object);
 215                 *captive_directory_object_return=NULL;
 216                 }
 217         return r;
 218 }
 219
 220
 221 static GnomeVFSResult FileIdBothDirInformation_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 222                 FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation,IO_STATUS_BLOCK *IoStatusBlock)
 223 {
 224 UNICODE_STRING FileName_UnicodeString;
 225 ULONG tmp_ULONG;
 226
 227         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_GENERIC);
 228         g_return_val_if_fail(FileIdBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 229         g_return_val_if_fail(IoStatusBlock!=NULL,GNOME_VFS_ERROR_GENERIC);
 230
 231         g_return_val_if_fail(NT_SUCCESS(IoStatusBlock->Status),GNOME_VFS_ERROR_GENERIC);
 232         /* do not exceed the returned buffer by this record; Redundant now, see below. */
 233         g_assert((gpointer)(((char *)FileIdBothDirInformation)+FileIdBothDirInformation->NextEntryOffset)
 234                         <=(gpointer)(((char *)FileIdBothDirInformation)+IoStatusBlock->Information));
 235         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 236         g_assert(FileIdBothDirInformation->NextEntryOffset==0);
 237
 238         file_info->valid_fields=0;
 239
 240         FileName_UnicodeString.Length=FileIdBothDirInformation->FileNameLength;
 241         FileName_UnicodeString.MaximumLength=FileIdBothDirInformation->FileNameLength
 242                         +sizeof(*FileIdBothDirInformation->FileName);   /* 0-terminator */
 243         g_assert((gpointer)(((char *)FileIdBothDirInformation->FileName)+FileName_UnicodeString.Length)
 244                         <=(gpointer)(((char *)FileIdBothDirInformation)+IoStatusBlock->Information));
 245                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 246         FileIdBothDirInformation->FileName[FileIdBothDirInformation->FileNameLength
 247                         /sizeof(*FileIdBothDirInformation->FileName)]=0;        /* 0-terminate it */
 248         FileName_UnicodeString.Buffer=FileIdBothDirInformation->FileName;
 249         file_info->name=captive_UnicodeString_to_utf8_malloc(&FileName_UnicodeString);
 250         /* '->name' assumed for 'file_info->valid_fields' */
 251
 252         /* FIXME: What is 'FILE_ATTRIBUTE_NORMAL'? */
 253         switch (FileIdBothDirInformation->FileAttributes & (0
 254                         | FILE_ATTRIBUTE_DIRECTORY
 255                         | FILE_ATTRIBUTE_DEVICE)) {
 256                 case 0:                        file_info->type=GNOME_VFS_FILE_TYPE_REGULAR;   break;
 257                 case FILE_ATTRIBUTE_DIRECTORY: file_info->type=GNOME_VFS_FILE_TYPE_DIRECTORY; break;
 258                 case FILE_ATTRIBUTE_DEVICE:    file_info->type=GNOME_VFS_FILE_TYPE_SOCKET;
 259                         /* or GNOME_VFS_FILE_TYPE_CHARACTER_DEVICE or GNOME_VFS_FILE_TYPE_BLOCK_DEVICE ? */
 260                         break;
 261                 default:                       file_info->type=GNOME_VFS_FILE_TYPE_UNKNOWN;   break;
 262                 }
 263         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
 264
 265         /* we use 0600 for r/w files, 0400 for FILE_ATTRIBUTE_READONLY */
 266         file_info->permissions=GNOME_VFS_PERM_USER_READ;
 267         if (file_info->type==GNOME_VFS_FILE_TYPE_DIRECTORY)
 268                 file_info->permissions|=GNOME_VFS_PERM_USER_EXEC;
 269         if (!(FileIdBothDirInformation->FileAttributes & FILE_ATTRIBUTE_READONLY))
 270                 file_info->permissions|=GNOME_VFS_PERM_USER_WRITE;
 271         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS;
 272
 273         file_info->size=FileIdBothDirInformation->EndOfFile.QuadPart;
 274         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_SIZE;
 275
 276         file_info->block_count=FileIdBothDirInformation->AllocationSize.QuadPart/512;
 277         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_BLOCK_COUNT;
 278
 279         file_info->flags=GNOME_VFS_FILE_FLAGS_LOCAL;
 280         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_FLAGS;
 281
 282         if (FileIdBothDirInformation->LastAccessTime.QuadPart) {        /* it may be 0 if not set */
 283                 if (RtlTimeToSecondsSince1970(&FileIdBothDirInformation->LastAccessTime,&tmp_ULONG)) {
 284                         file_info->atime=tmp_ULONG;
 285                         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_ATIME;
 286                         }
 287                 }
 288
 289         /* it may be 0 if not set */
 290         if (FileIdBothDirInformation->LastWriteTime.QuadPart || FileIdBothDirInformation->ChangeTime.QuadPart) {
 291                 if (RtlTimeToSecondsSince1970(
 292                                 /* take the more recent (==bigger) time: */
 293                                 (FileIdBothDirInformation->LastWriteTime.QuadPart > FileIdBothDirInformation->ChangeTime.QuadPart
 294                                                 ? &FileIdBothDirInformation->LastWriteTime : &FileIdBothDirInformation->ChangeTime),
 295                                 &tmp_ULONG)) {
 296                         file_info->mtime=tmp_ULONG;
 297                         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_MTIME;
 298                         }
 299                 }
 300
 301         if (FileIdBothDirInformation->CreationTime.QuadPart) {  /* it may be 0 if not set */
 302                 if (RtlTimeToSecondsSince1970(&FileIdBothDirInformation->CreationTime,&tmp_ULONG)) {
 303                         file_info->ctime=tmp_ULONG;
 304                         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_CTIME;
 305                         }
 306                 }
 307
 308         return GNOME_VFS_OK;
 309 }
 310
 311
 312 static GnomeVFSResult FileBothDirInformation_to_FileIdBothDirInformation(FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation,
 313                 FILE_BOTH_DIR_INFORMATION *FileBothDirInformation,IO_STATUS_BLOCK *IoStatusBlock)
 314 {
 315 static LARGE_INTEGER FileId_counter;
 316
 317         g_return_val_if_fail(FileIdBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 318         g_return_val_if_fail(FileBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 319         g_return_val_if_fail(IoStatusBlock!=NULL,GNOME_VFS_ERROR_GENERIC);
 320
 321         g_return_val_if_fail(NT_SUCCESS(IoStatusBlock->Status),GNOME_VFS_ERROR_GENERIC);
 322         /* do not exceed the returned buffer by this record; Redundant now, see below. */
 323         g_assert((gpointer)(((char *)FileBothDirInformation)+FileBothDirInformation->NextEntryOffset)
 324                         <=(gpointer)(((char *)FileBothDirInformation)+IoStatusBlock->Information));
 325         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 326         g_assert(FileBothDirInformation->NextEntryOffset==0);
 327
 328         g_assert((gpointer)(((char *)FileBothDirInformation->FileName)+FileBothDirInformation->FileNameLength)
 329                         <=(gpointer)(((char *)FileBothDirInformation)+IoStatusBlock->Information));
 330                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 331         memcpy(FileIdBothDirInformation->FileName,FileBothDirInformation->FileName,
 332                         FileBothDirInformation->FileNameLength);
 333
 334         /* NextEntryOffset already handled */
 335         FileIdBothDirInformation->FileIndex      =FileBothDirInformation->FileIndex;
 336         FileIdBothDirInformation->CreationTime   =FileBothDirInformation->CreationTime;
 337         FileIdBothDirInformation->LastAccessTime =FileBothDirInformation->LastAccessTime;
 338         FileIdBothDirInformation->LastWriteTime  =FileBothDirInformation->LastWriteTime;
 339         FileIdBothDirInformation->ChangeTime     =FileBothDirInformation->ChangeTime;
 340         FileIdBothDirInformation->EndOfFile      =FileBothDirInformation->EndOfFile;
 341         FileIdBothDirInformation->AllocationSize =FileBothDirInformation->AllocationSize;
 342         FileIdBothDirInformation->FileAttributes =FileBothDirInformation->FileAttributes;
 343         FileIdBothDirInformation->FileNameLength =FileBothDirInformation->FileNameLength;
 344         FileIdBothDirInformation->EaSize         =FileBothDirInformation->EaSize;
 345         FileIdBothDirInformation->ShortNameLength=FileBothDirInformation->ShortNameLength;
 346         g_assert(sizeof(FileIdBothDirInformation->ShortName)==sizeof(FileBothDirInformation->ShortName));
 347         memcpy(FileIdBothDirInformation->ShortName,FileBothDirInformation->ShortName,
 348                         sizeof(FileBothDirInformation->ShortName));
 349         /* FIXME: Register filenames for uniqueness;
 350          * Not needed now as 'FileId' field not used by libcaptive anywhere anyway.
 351          */
 352         FileIdBothDirInformation->FileId.QuadPart=FileId_counter.QuadPart++;
 353         /* FileName already handled */
 354
 355         IoStatusBlock->Information=sizeof(*FileIdBothDirInformation)+FileIdBothDirInformation->FileNameLength;
 356         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 357         FileIdBothDirInformation->NextEntryOffset=0;
 358
 359         return GNOME_VFS_OK;
 360 }
 361
 362
 363 static GnomeVFSResult captive_directory_slave_close(CaptiveDirectoryObject *captive_directory_object)
 364 {
 365 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 366 NTSTATUS err;
 367 HANDLE dir_Handle;
 368
 369         g_return_val_if_fail(CAPTIVE_DIRECTORY_SLAVE_IS_OBJECT(captive_directory_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 370
 371         captive_directory_slave_object=CAPTIVE_DIRECTORY_SLAVE_OBJECT(captive_directory_object);
 372
 373         if (captive_directory_slave_object->dir_Handle!=NULL)   {       /* not yet already closed */
 374                 captive_usecount(-1);   /* close() errors notwithstanding */
 375
 376                 dir_Handle=captive_directory_slave_object->dir_Handle;
 377                 captive_directory_slave_object->dir_Handle=NULL;
 378                 err=NtClose(dir_Handle);
 379                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 380                 }
 381
 382         captive_leave();
 383         return GNOME_VFS_OK;
 384 }
 385
 386
 387 static GnomeVFSResult captive_directory_slave_read
 388                 (CaptiveDirectoryObject *captive_directory_object,GnomeVFSFileInfo *file_info)
 389 {
 390 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 391 NTSTATUS err;
 392 IO_STATUS_BLOCK dir_IoStatusBlock;
 393 FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation;
 394 FILE_BOTH_DIR_INFORMATION *FileBothDirInformation;
 395 GnomeVFSResult errvfsresult;
 396
 397         g_return_val_if_fail(CAPTIVE_DIRECTORY_SLAVE_IS_OBJECT(captive_directory_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 398         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 399
 400         captive_directory_slave_object=CAPTIVE_DIRECTORY_SLAVE_OBJECT(captive_directory_object);
 401
 402         g_return_val_if_fail(captive_directory_slave_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 403
 404         FileIdBothDirInformation=(void *)captive_directory_slave_object->QueryDirectory_buf.FileIdBothDirInformation;
 405 retry:
 406         switch (captive_directory_slave_object->CaptiveDirectorySlaveObject_QueryDirectory_type) {
 407
 408                 case CaptiveDirectorySlaveObject_QueryDirectory_type_FileIdBothDirInformation:
 409                         err=NtQueryDirectoryFile(
 410                                         captive_directory_slave_object->dir_Handle,     /* FileHandle */
 411                                         NULL,   /* PEvent; completion signalling; optional */
 412                                         NULL,   /* ApcRoutine; optional */
 413                                         NULL,   /* ApcContext; optional */
 414                                         &dir_IoStatusBlock,     /* IoStatusBlock */
 415                                         (gpointer)captive_directory_slave_object->QueryDirectory_buf.FileIdBothDirInformation,  /* FileInformation */
 416                                         sizeof(captive_directory_slave_object->QueryDirectory_buf.FileIdBothDirInformation)     /* Length */
 417                                                         -sizeof(*FileIdBothDirInformation->FileName),   /* reserve space for 0-terminator */
 418                                         FileIdBothDirectoryInformation, /* FileInformationClass; =>FILE_ID_BOTH_DIR_INFORMATION */
 419                                         TRUE,   /* ReturnSingleEntry */
 420                                         NULL,   /* FileName; wildcards possible; optional */
 421                                         captive_directory_slave_object->read_first);    /* RestartScan */
 422                         if (err==STATUS_NO_SUCH_FILE) {
 423                                 /* 'FileIdBothDirInformation' not supported at least by ext2fsd.sys.
 424                                  * Emulate it from 'FileBothDirectoryInformation' here.
 425                                  */
 426                                 captive_directory_slave_object->CaptiveDirectorySlaveObject_QueryDirectory_type=
 427                                                 CaptiveDirectorySlaveObject_QueryDirectory_type_FileBothDirInformation;
 428                                 goto retry;
 429                                 }
 430
 431                         captive_directory_slave_object->read_first=FALSE;
 432                         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 433                                 return errvfsresult;
 434                         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 435                         break;
 436
 437                 case CaptiveDirectorySlaveObject_QueryDirectory_type_FileBothDirInformation:
 438                         FileBothDirInformation=(void *)captive_directory_slave_object->QueryDirectory_buf.FileBothDirInformation;
 439                         /* SL_INDEX_SPECIFIED is forbidden for ext2fsd.sys-V0.10A although
 440                          * IIRC it was required for the native W32 filesystems.
 441                          * Fortunately 'FileBothDirInformation' is just a workaround for ext2fsd.sys-V0.10A
 442                          * which is not used for the native W32 filesystems and therefore it should be safe.
 443                          * WARNING: Hack with 'FileIndex==0' to prevent SL_INDEX_SPECIFIED is just libcaptive
 444                          * specific hack of reactos! See also NtQueryDirectoryFile().
 445                          */
 446                         FileBothDirInformation->FileIndex=0;
 447                         err=NtQueryDirectoryFile(
 448                                         captive_directory_slave_object->dir_Handle,     /* FileHandle */
 449                                         NULL,   /* PEvent; completion signalling; optional */
 450                                         NULL,   /* ApcRoutine; optional */
 451                                         NULL,   /* ApcContext; optional */
 452                                         &dir_IoStatusBlock,     /* IoStatusBlock */
 453                                         (gpointer)captive_directory_slave_object->QueryDirectory_buf.FileBothDirInformation,    /* FileInformation */
 454                                         sizeof(captive_directory_slave_object->QueryDirectory_buf.FileBothDirInformation)       /* Length */
 455                                                         -sizeof(*FileBothDirInformation->FileName),     /* reserve space for 0-terminator */
 456                                         FileBothDirectoryInformation,   /* FileInformationClass; =>FILE_BOTH_DIR_INFORMATION */
 457                                         TRUE,   /* ReturnSingleEntry */
 458                                         NULL,   /* FileName; wildcards possible; optional */
 459                                         captive_directory_slave_object->read_first);    /* RestartScan */
 460
 461                         captive_directory_slave_object->read_first=FALSE;
 462                         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err))) {
 463                                 /* Do not reset 'read_first' on 'STATUS_NO_SUCH_FILE' to leave us stuck at EOF - GnomeVFS behaves that way. */
 464                                 return errvfsresult;
 465                                 }
 466                         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 467
 468                         errvfsresult=FileBothDirInformation_to_FileIdBothDirInformation(FileIdBothDirInformation,FileBothDirInformation,
 469                                         &dir_IoStatusBlock);
 470                         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 471                         break;
 472
 473                 default: g_assert_not_reached();
 474                 }
 475
 476         errvfsresult=FileIdBothDirInformation_to_GnomeVFSFileInfo(file_info,FileIdBothDirInformation,
 477                         &dir_IoStatusBlock);
 478         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 479
 480         captive_leave();
 481         return GNOME_VFS_OK;
 482 }
 483
 484
 485 static GnomeVFSResult captive_directory_slave_remove(CaptiveDirectoryObject *captive_directory_object)
 486 {
 487 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 488 NTSTATUS err;
 489 FILE_DISPOSITION_INFORMATION FileDispositionInformation_struct;
 490 IO_STATUS_BLOCK dir_IoStatusBlock;
 491 GnomeVFSResult errvfsresult;
 492
 493         g_return_val_if_fail(CAPTIVE_DIRECTORY_SLAVE_IS_OBJECT(captive_directory_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 494
 495         captive_directory_slave_object=CAPTIVE_DIRECTORY_SLAVE_OBJECT(captive_directory_object);
 496
 497         g_return_val_if_fail(captive_directory_slave_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 498
 499         FileDispositionInformation_struct.DoDeleteFile=TRUE;
 500
 501         err=NtSetInformationFile(
 502                         captive_directory_slave_object->dir_Handle,     /* FileHandle */
 503                         &dir_IoStatusBlock,     /* IoStatusBlock */
 504                         &FileDispositionInformation_struct,     /* FileInformation */
 505                         sizeof(FileDispositionInformation_struct),      /* Length */
 506                         FileDispositionInformation);    /* FileInformationClass */
 507         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 508                 return errvfsresult;
 509         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 510
 511         captive_leave();
 512         return GNOME_VFS_OK;
 513 }