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 BOOLEAN errBOOLEAN;
 226 ULONG tmp_ULONG;
 227
 228         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_GENERIC);
 229         g_return_val_if_fail(FileIdBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 230         g_return_val_if_fail(IoStatusBlock!=NULL,GNOME_VFS_ERROR_GENERIC);
 231
 232         g_return_val_if_fail(NT_SUCCESS(IoStatusBlock->Status),GNOME_VFS_ERROR_GENERIC);
 233         /* do not exceed the returned buffer by this record; Redundant now, see below. */
 234         g_assert((gpointer)(((char *)FileIdBothDirInformation)+FileIdBothDirInformation->NextEntryOffset)
 235                         <=(gpointer)(((char *)FileIdBothDirInformation)+IoStatusBlock->Information));
 236         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 237         g_assert(FileIdBothDirInformation->NextEntryOffset==0);
 238
 239         file_info->valid_fields=0;
 240
 241         FileName_UnicodeString.Length=FileIdBothDirInformation->FileNameLength;
 242         FileName_UnicodeString.MaximumLength=FileIdBothDirInformation->FileNameLength
 243                         +sizeof(*FileIdBothDirInformation->FileName);   /* 0-terminator */
 244         g_assert((gpointer)(((char *)FileIdBothDirInformation->FileName)+FileName_UnicodeString.Length)
 245                         <=(gpointer)(((char *)FileIdBothDirInformation)+IoStatusBlock->Information));
 246                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 247         FileIdBothDirInformation->FileName[FileIdBothDirInformation->FileNameLength
 248                         /sizeof(*FileIdBothDirInformation->FileName)]=0;        /* 0-terminate it */
 249         FileName_UnicodeString.Buffer=FileIdBothDirInformation->FileName;
 250         file_info->name=captive_UnicodeString_to_utf8_malloc(&FileName_UnicodeString);
 251         /* '->name' assumed for 'file_info->valid_fields' */
 252
 253         /* FIXME: What is 'FILE_ATTRIBUTE_NORMAL'? */
 254         switch (FileIdBothDirInformation->FileAttributes & (0
 255                         | FILE_ATTRIBUTE_DIRECTORY
 256                         | FILE_ATTRIBUTE_DEVICE)) {
 257                 case 0:                        file_info->type=GNOME_VFS_FILE_TYPE_REGULAR;   break;
 258                 case FILE_ATTRIBUTE_DIRECTORY: file_info->type=GNOME_VFS_FILE_TYPE_DIRECTORY; break;
 259                 case FILE_ATTRIBUTE_DEVICE:    file_info->type=GNOME_VFS_FILE_TYPE_SOCKET;
 260                         /* or GNOME_VFS_FILE_TYPE_CHARACTER_DEVICE or GNOME_VFS_FILE_TYPE_BLOCK_DEVICE ? */
 261                         break;
 262                 default:                       file_info->type=GNOME_VFS_FILE_TYPE_UNKNOWN;   break;
 263                 }
 264         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
 265
 266         /* we use 0600 for r/w files, 0400 for FILE_ATTRIBUTE_READONLY */
 267         file_info->permissions=GNOME_VFS_PERM_USER_READ;
 268         if (file_info->type==GNOME_VFS_FILE_TYPE_DIRECTORY)
 269                 file_info->permissions|=GNOME_VFS_PERM_USER_EXEC;
 270         if (!(FileIdBothDirInformation->FileAttributes & FILE_ATTRIBUTE_READONLY))
 271                 file_info->permissions|=GNOME_VFS_PERM_USER_WRITE;
 272         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS;
 273
 274         file_info->size=FileIdBothDirInformation->EndOfFile.QuadPart;
 275         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_SIZE;
 276
 277         file_info->block_count=FileIdBothDirInformation->AllocationSize.QuadPart/512;
 278         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_BLOCK_COUNT;
 279
 280         file_info->flags=GNOME_VFS_FILE_FLAGS_LOCAL;
 281         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_FLAGS;
 282
 283         if (FileIdBothDirInformation->LastAccessTime.QuadPart) {        /* it may be 0 if not set */
 284                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileIdBothDirInformation->LastAccessTime,&tmp_ULONG);
 285                 g_assert(errBOOLEAN==TRUE);
 286                 file_info->atime=tmp_ULONG;
 287                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_ATIME;
 288                 }
 289
 290         /* it may be 0 if not set */
 291         if (FileIdBothDirInformation->LastWriteTime.QuadPart || FileIdBothDirInformation->ChangeTime.QuadPart) {
 292                 errBOOLEAN=RtlTimeToSecondsSince1970(
 293                                 /* take the more recent (==bigger) time: */
 294                                 (FileIdBothDirInformation->LastWriteTime.QuadPart > FileIdBothDirInformation->ChangeTime.QuadPart
 295                                                 ? &FileIdBothDirInformation->LastWriteTime : &FileIdBothDirInformation->ChangeTime),
 296                                 &tmp_ULONG);
 297                 g_assert(errBOOLEAN==TRUE);
 298                 file_info->mtime=tmp_ULONG;
 299                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_MTIME;
 300                 }
 301
 302         if (FileIdBothDirInformation->CreationTime.QuadPart) {  /* it may be 0 if not set */
 303                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileIdBothDirInformation->CreationTime,&tmp_ULONG);
 304                 g_assert(errBOOLEAN==TRUE);
 305                 file_info->ctime=tmp_ULONG;
 306                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_CTIME;
 307                 }
 308
 309         return GNOME_VFS_OK;
 310 }
 311
 312
 313 static GnomeVFSResult FileBothDirInformation_to_FileIdBothDirInformation(FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation,
 314                 FILE_BOTH_DIR_INFORMATION *FileBothDirInformation,IO_STATUS_BLOCK *IoStatusBlock)
 315 {
 316 static LARGE_INTEGER FileId_counter;
 317
 318         g_return_val_if_fail(FileIdBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 319         g_return_val_if_fail(FileBothDirInformation!=NULL,GNOME_VFS_ERROR_GENERIC);
 320         g_return_val_if_fail(IoStatusBlock!=NULL,GNOME_VFS_ERROR_GENERIC);
 321
 322         g_return_val_if_fail(NT_SUCCESS(IoStatusBlock->Status),GNOME_VFS_ERROR_GENERIC);
 323         /* do not exceed the returned buffer by this record; Redundant now, see below. */
 324         g_assert((gpointer)(((char *)FileBothDirInformation)+FileBothDirInformation->NextEntryOffset)
 325                         <=(gpointer)(((char *)FileBothDirInformation)+IoStatusBlock->Information));
 326         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 327         g_assert(FileBothDirInformation->NextEntryOffset==0);
 328
 329         g_assert((gpointer)(((char *)FileBothDirInformation->FileName)+FileBothDirInformation->FileNameLength)
 330                         <=(gpointer)(((char *)FileBothDirInformation)+IoStatusBlock->Information));
 331                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 332         memcpy(FileIdBothDirInformation->FileName,FileBothDirInformation->FileName,
 333                         FileBothDirInformation->FileNameLength);
 334
 335         /* NextEntryOffset already handled */
 336         FileIdBothDirInformation->FileIndex      =FileBothDirInformation->FileIndex;
 337         FileIdBothDirInformation->CreationTime   =FileBothDirInformation->CreationTime;
 338         FileIdBothDirInformation->LastAccessTime =FileBothDirInformation->LastAccessTime;
 339         FileIdBothDirInformation->LastWriteTime  =FileBothDirInformation->LastWriteTime;
 340         FileIdBothDirInformation->ChangeTime     =FileBothDirInformation->ChangeTime;
 341         FileIdBothDirInformation->EndOfFile      =FileBothDirInformation->EndOfFile;
 342         FileIdBothDirInformation->AllocationSize =FileBothDirInformation->AllocationSize;
 343         FileIdBothDirInformation->FileAttributes =FileBothDirInformation->FileAttributes;
 344         FileIdBothDirInformation->FileNameLength =FileBothDirInformation->FileNameLength;
 345         FileIdBothDirInformation->EaSize         =FileBothDirInformation->EaSize;
 346         FileIdBothDirInformation->ShortNameLength=FileBothDirInformation->ShortNameLength;
 347         g_assert(sizeof(FileIdBothDirInformation->ShortName)==sizeof(FileBothDirInformation->ShortName));
 348         memcpy(FileIdBothDirInformation->ShortName,FileBothDirInformation->ShortName,
 349                         sizeof(FileBothDirInformation->ShortName));
 350         /* FIXME: Register filenames for uniqueness;
 351          * Not needed now as 'FileId' field not used by libcaptive anywhere anyway.
 352          */
 353         FileIdBothDirInformation->FileId.QuadPart=FileId_counter.QuadPart++;
 354         /* FileName already handled */
 355
 356         IoStatusBlock->Information=sizeof(*FileIdBothDirInformation)+FileIdBothDirInformation->FileNameLength;
 357         /* '->NextEntryOffset' is ==0 as we used 'ReturnSingleEntry==TRUE' */
 358         FileIdBothDirInformation->NextEntryOffset=0;
 359
 360         return GNOME_VFS_OK;
 361 }
 362
 363
 364 static GnomeVFSResult captive_directory_slave_close(CaptiveDirectoryObject *captive_directory_object)
 365 {
 366 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 367 NTSTATUS err;
 368 HANDLE dir_Handle;
 369
 370         g_return_val_if_fail(CAPTIVE_DIRECTORY_SLAVE_IS_OBJECT(captive_directory_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 371
 372         captive_directory_slave_object=CAPTIVE_DIRECTORY_SLAVE_OBJECT(captive_directory_object);
 373
 374         if (captive_directory_slave_object->dir_Handle!=NULL)   {       /* not yet already closed */
 375                 captive_usecount(-1);   /* close() errors notwithstanding */
 376
 377                 dir_Handle=captive_directory_slave_object->dir_Handle;
 378                 captive_directory_slave_object->dir_Handle=NULL;
 379                 err=NtClose(dir_Handle);
 380                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 381                 }
 382
 383         captive_leave();
 384         return GNOME_VFS_OK;
 385 }
 386
 387
 388 static GnomeVFSResult captive_directory_slave_read
 389                 (CaptiveDirectoryObject *captive_directory_object,GnomeVFSFileInfo *file_info)
 390 {
 391 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 392 NTSTATUS err;
 393 IO_STATUS_BLOCK dir_IoStatusBlock;
 394 FILE_ID_BOTH_DIR_INFORMATION *FileIdBothDirInformation;
 395 FILE_BOTH_DIR_INFORMATION *FileBothDirInformation;
 396 GnomeVFSResult errvfsresult;
 397
 398         g_return_val_if_fail(CAPTIVE_DIRECTORY_SLAVE_IS_OBJECT(captive_directory_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 399         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 400
 401         captive_directory_slave_object=CAPTIVE_DIRECTORY_SLAVE_OBJECT(captive_directory_object);
 402
 403         g_return_val_if_fail(captive_directory_slave_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 404
 405         FileIdBothDirInformation=(void *)captive_directory_slave_object->QueryDirectory_buf.FileIdBothDirInformation;
 406 retry:
 407         switch (captive_directory_slave_object->CaptiveDirectorySlaveObject_QueryDirectory_type) {
 408
 409                 case CaptiveDirectorySlaveObject_QueryDirectory_type_FileIdBothDirInformation:
 410                         err=NtQueryDirectoryFile(
 411                                         captive_directory_slave_object->dir_Handle,     /* FileHandle */
 412                                         NULL,   /* PEvent; completion signalling; optional */
 413                                         NULL,   /* ApcRoutine; optional */
 414                                         NULL,   /* ApcContext; optional */
 415                                         &dir_IoStatusBlock,     /* IoStatusBlock */
 416                                         (gpointer)captive_directory_slave_object->QueryDirectory_buf.FileIdBothDirInformation,  /* FileInformation */
 417                                         sizeof(captive_directory_slave_object->QueryDirectory_buf.FileIdBothDirInformation)     /* Length */
 418                                                         -sizeof(*FileIdBothDirInformation->FileName),   /* reserve space for 0-terminator */
 419                                         FileIdBothDirectoryInformation, /* FileInformationClass; =>FILE_ID_BOTH_DIR_INFORMATION */
 420                                         TRUE,   /* ReturnSingleEntry */
 421                                         NULL,   /* FileName; wildcards possible; optional */
 422                                         captive_directory_slave_object->read_first);    /* RestartScan */
 423                         if (err==STATUS_NO_SUCH_FILE) {
 424                                 /* 'FileIdBothDirInformation' not supported at least by ext2fsd.sys.
 425                                  * Emulate it from 'FileBothDirectoryInformation' here.
 426                                  */
 427                                 captive_directory_slave_object->CaptiveDirectorySlaveObject_QueryDirectory_type=
 428                                                 CaptiveDirectorySlaveObject_QueryDirectory_type_FileBothDirInformation;
 429                                 goto retry;
 430                                 }
 431
 432                         captive_directory_slave_object->read_first=FALSE;
 433                         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 434                                 return errvfsresult;
 435                         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 436                         break;
 437
 438                 case CaptiveDirectorySlaveObject_QueryDirectory_type_FileBothDirInformation:
 439                         FileBothDirInformation=(void *)captive_directory_slave_object->QueryDirectory_buf.FileBothDirInformation;
 440                         /* SL_INDEX_SPECIFIED is forbidden for ext2fsd.sys-V0.10A although
 441                          * IIRC it was required for the native W32 filesystems.
 442                          * Fortunately 'FileBothDirInformation' is just a workaround for ext2fsd.sys-V0.10A
 443                          * which is not used for the native W32 filesystems and therefore it should be safe.
 444                          * WARNING: Hack with 'FileIndex==0' to prevent SL_INDEX_SPECIFIED is just libcaptive
 445                          * specific hack of reactos! See also NtQueryDirectoryFile().
 446                          */
 447                         FileBothDirInformation->FileIndex=0;
 448                         err=NtQueryDirectoryFile(
 449                                         captive_directory_slave_object->dir_Handle,     /* FileHandle */
 450                                         NULL,   /* PEvent; completion signalling; optional */
 451                                         NULL,   /* ApcRoutine; optional */
 452                                         NULL,   /* ApcContext; optional */
 453                                         &dir_IoStatusBlock,     /* IoStatusBlock */
 454                                         (gpointer)captive_directory_slave_object->QueryDirectory_buf.FileBothDirInformation,    /* FileInformation */
 455                                         sizeof(captive_directory_slave_object->QueryDirectory_buf.FileBothDirInformation)       /* Length */
 456                                                         -sizeof(*FileBothDirInformation->FileName),     /* reserve space for 0-terminator */
 457                                         FileBothDirectoryInformation,   /* FileInformationClass; =>FILE_BOTH_DIR_INFORMATION */
 458                                         TRUE,   /* ReturnSingleEntry */
 459                                         NULL,   /* FileName; wildcards possible; optional */
 460                                         captive_directory_slave_object->read_first);    /* RestartScan */
 461
 462                         captive_directory_slave_object->read_first=FALSE;
 463                         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err))) {
 464                                 /* Do not reset 'read_first' on 'STATUS_NO_SUCH_FILE' to leave us stuck at EOF - GnomeVFS behaves that way. */
 465                                 return errvfsresult;
 466                                 }
 467                         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 468
 469                         errvfsresult=FileBothDirInformation_to_FileIdBothDirInformation(FileIdBothDirInformation,FileBothDirInformation,
 470                                         &dir_IoStatusBlock);
 471                         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 472                         break;
 473
 474                 default: g_assert_not_reached();
 475                 }
 476
 477         errvfsresult=FileIdBothDirInformation_to_GnomeVFSFileInfo(file_info,FileIdBothDirInformation,
 478                         &dir_IoStatusBlock);
 479         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 480
 481         captive_leave();
 482         return GNOME_VFS_OK;
 483 }
 484
 485
 486 static GnomeVFSResult captive_directory_slave_remove(CaptiveDirectoryObject *captive_directory_object)
 487 {
 488 CaptiveDirectorySlaveObject *captive_directory_slave_object;
 489 NTSTATUS err;
 490 FILE_DISPOSITION_INFORMATION FileDispositionInformation_struct;
 491 IO_STATUS_BLOCK dir_IoStatusBlock;
 492 GnomeVFSResult errvfsresult;
 493
 494         g_return_val_if_fail(CAPTIVE_DIRECTORY_SLAVE_IS_OBJECT(captive_directory_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 495
 496         captive_directory_slave_object=CAPTIVE_DIRECTORY_SLAVE_OBJECT(captive_directory_object);
 497
 498         g_return_val_if_fail(captive_directory_slave_object->dir_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 499
 500         FileDispositionInformation_struct.DoDeleteFile=TRUE;
 501
 502         err=NtSetInformationFile(
 503                         captive_directory_slave_object->dir_Handle,     /* FileHandle */
 504                         &dir_IoStatusBlock,     /* IoStatusBlock */
 505                         &FileDispositionInformation_struct,     /* FileInformation */
 506                         sizeof(FileDispositionInformation_struct),      /* Length */
 507                         FileDispositionInformation);    /* FileInformationClass */
 508         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 509                 return errvfsresult;
 510         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 511
 512         captive_leave();
 513         return GNOME_VFS_OK;
 514 }