src/libcaptive/client/file-slave.c

   1 /* $Id$
   2  * captive vfs 'file' 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 "file-slave.h" /* self */
  23 #include "captive/client-file.h"        /* for CaptiveFileObject */
  24 #include "file.h"       /* for CaptiveFileObject priv */
  25 #include "directory.h"
  26 #include "lib.h"
  27 #include <glib/gmessages.h>
  28 #include "captive/unicode.h"
  29 #include "reactos/ntos/types.h" /* for HANDLE */
  30 #include "reactos/ddk/iotypes.h"        /* for IO_STATUS_BLOCK */
  31 #include "reactos/ddk/iofuncs.h"        /* for IoCreateFile() */
  32 #include "result.h"
  33 #include "captive/client-directory.h"
  34 #include "reactos/ddk/obfuncs.h"        /* for ObReferenceObjectByHandle() */
  35 #include "captive/macros.h"
  36 #include "captive/leave.h"
  37 #include "captive/usecount.h"
  38 #include "vfs.h"
  39 #include "vfs-slave.h"
  40
  41
  42 /* Config: */
  43 #define MAX_FILE_WRITTEN 0x100000       /* FIXME: Workaround memory consumption for non-journalled fastfat.sys */
  44
  45
  46 struct _CaptiveFileSlaveObject {
  47         CaptiveFileObject parent_instance;
  48
  49         /*< private >*/
  50         HANDLE file_Handle;
  51         GnomeVFSFileOffset offset;
  52         };
  53 struct _CaptiveFileSlaveObjectClass {
  54         CaptiveFileObjectClass parent_class;
  55         };
  56
  57
  58 static gpointer captive_file_slave_object_parent_class=NULL;
  59
  60
  61 static GnomeVFSResult captive_file_slave_close(CaptiveFileObject *captive_file_object);
  62 static GnomeVFSResult captive_file_slave_read(CaptiveFileObject *captive_file_object,
  63                 gpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_read_return);
  64 static GnomeVFSResult captive_file_slave_write(CaptiveFileObject *captive_file_object,
  65                 gconstpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_written_return);
  66 static GnomeVFSResult captive_file_slave_seek
  67                 (CaptiveFileObject *captive_file_object,GnomeVFSSeekPosition whence,GnomeVFSFileOffset offset);
  68 static GnomeVFSResult captive_file_slave_tell(CaptiveFileObject *captive_file_object,GnomeVFSFileOffset *offset_return);
  69 static GnomeVFSResult captive_file_slave_remove(CaptiveFileObject *captive_file_object);
  70 static GnomeVFSResult captive_file_slave_file_info_get
  71                 (CaptiveFileObject *captive_file_object,GnomeVFSFileInfo *file_info);
  72 static GnomeVFSResult captive_file_slave_file_info_set
  73                 (CaptiveFileObject *captive_file_object,const GnomeVFSFileInfo *info,GnomeVFSSetFileInfoMask mask);
  74 static GnomeVFSResult captive_file_slave_truncate(CaptiveFileObject *captive_file_object,GnomeVFSFileSize file_size);
  75 static GnomeVFSResult captive_file_slave_move
  76                 (CaptiveFileObject *captive_file_object_old,const gchar *pathname_new,gboolean force_replace);
  77
  78
  79 static void captive_file_slave_object_finalize(CaptiveFileSlaveObject *captive_file_slave_object)
  80 {
  81         g_return_if_fail(captive_file_slave_object!=NULL);
  82
  83         captive_file_slave_close(CAPTIVE_FILE_OBJECT(captive_file_slave_object));       /* errors ignored */
  84
  85         G_OBJECT_CLASS(captive_file_slave_object_parent_class)->finalize((GObject *)captive_file_slave_object);
  86 }
  87
  88
  89 static void captive_file_slave_object_class_init(CaptiveFileSlaveObjectClass *class)
  90 {
  91 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
  92 CaptiveFileObjectClass *captive_file_object_class=CAPTIVE_FILE_OBJECT_CLASS(class);
  93
  94         captive_file_slave_object_parent_class=g_type_class_ref(g_type_parent(G_TYPE_FROM_CLASS(class)));
  95         gobject_class->finalize=(void (*)(GObject *object))captive_file_slave_object_finalize;
  96
  97         captive_file_object_class->read=captive_file_slave_read;
  98         captive_file_object_class->write=captive_file_slave_write;
  99         captive_file_object_class->seek=captive_file_slave_seek;
 100         captive_file_object_class->tell=captive_file_slave_tell;
 101         captive_file_object_class->remove=captive_file_slave_remove;
 102         captive_file_object_class->file_info_get=captive_file_slave_file_info_get;
 103         captive_file_object_class->file_info_set=captive_file_slave_file_info_set;
 104         captive_file_object_class->truncate=captive_file_slave_truncate;
 105         captive_file_object_class->move=captive_file_slave_move;
 106 }
 107
 108
 109 static void captive_file_slave_object_init(CaptiveFileSlaveObject *captive_file_slave_object)
 110 {
 111         captive_file_slave_object->file_Handle=NULL;
 112 }
 113
 114
 115 GType captive_file_slave_object_get_type(void)
 116 {
 117 static GType captive_file_slave_object_type=0;
 118
 119         if (!captive_file_slave_object_type) {
 120 static const GTypeInfo captive_file_slave_object_info={
 121                                 sizeof(CaptiveFileSlaveObjectClass),
 122                                 NULL,   /* base_init */
 123                                 NULL,   /* base_finalize */
 124                                 (GClassInitFunc)captive_file_slave_object_class_init,
 125                                 NULL,   /* class_finalize */
 126                                 NULL,   /* class_data */
 127                                 sizeof(CaptiveFileSlaveObject),
 128                                 5,      /* n_preallocs */
 129                                 (GInstanceInitFunc)captive_file_slave_object_init,
 130                                 };
 131
 132                 captive_file_slave_object_type=g_type_register_static(CAPTIVE_FILE_TYPE_OBJECT,
 133                                 "CaptiveFileSlaveObject",&captive_file_slave_object_info,0);
 134                 }
 135
 136         return captive_file_slave_object_type;
 137 }
 138
 139
 140 static GnomeVFSResult captive_file_slave_new_internal(CaptiveFileSlaveObject *captive_file_slave_object,
 141                 const gchar *pathname,GnomeVFSOpenMode mode,gboolean create,gboolean create_exclusive,guint create_perm)
 142 {
 143 IO_STATUS_BLOCK file_IoStatusBlock;
 144 GnomeVFSResult errvfsresult;
 145 OBJECT_ATTRIBUTES file_ObjectAttributes;
 146 HANDLE file_Handle;
 147 NTSTATUS err;
 148
 149         g_return_val_if_fail(captive_file_slave_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 150         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 151
 152         errvfsresult=captive_ObjectAttributes_init(pathname,&file_ObjectAttributes);
 153         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 154
 155         /* open */
 156         err=IoCreateFile(
 157                         &file_Handle,   /* FileHandle */
 158                         0
 159                                         |(!(mode&GNOME_VFS_OPEN_READ ) ? 0 : FILE_READ_DATA)
 160                                         |(!(mode&GNOME_VFS_OPEN_WRITE) ? 0 : FILE_WRITE_DATA | FILE_APPEND_DATA | FILE_WRITE_ATTRIBUTES)
 161                                         |(  mode!=0                    ? 0 : FILE_READ_ATTRIBUTES)
 162                                         ,       /* DesiredAccess */
 163                         &file_ObjectAttributes, /* ObjectAttributes */
 164                         &file_IoStatusBlock,    /* IoStatusBlock */
 165                         NULL,   /* AllocationSize; ignored for open */
 166                         (!create || create_perm&0200 ? FILE_ATTRIBUTE_NORMAL: FILE_ATTRIBUTE_READONLY), /* FileAttributes; ignored for open */
 167                         (!create || !create_exclusive   /* ShareAccess; 0 means exclusive */
 168                                         ? (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
 169                                         : 0),
 170                         (!create ? FILE_OPEN : FILE_CREATE),    /* CreateDisposition */
 171                         /* FILE_SYNCHRONOUS_IO_{,NON}ALERT: We need to allow W32 filesystem
 172                                  * any waits to not to let it return STATUS_CANT_WAIT us.
 173                                  * Alertability should have only effect on asynchronous events
 174                                  * from KeWaitForSingleObject() by setting/clearing its parameter 'Alertable'.
 175                                  */
 176                         FILE_SYNCHRONOUS_IO_ALERT       /* CreateOptions */
 177                                         /* sniffed: | FILE_DIRECTORY_FILE */
 178                                         /* sniffed: | FILE_OPEN_FOR_BACKUP_INTENT */
 179                                         ,
 180                         NULL,   /* EaBuffer */
 181                         0,      /* EaLength */
 182                         CreateFileTypeNone,     /* CreateFileType */
 183                         NULL,   /* ExtraCreateParameters */
 184                         0);     /* Options */
 185         g_free(file_ObjectAttributes.ObjectName);       /* left from captive_file_slave_uri_parent_init() */
 186         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 187         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 188                 return errvfsresult;
 189         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 190         g_return_val_if_fail(file_IoStatusBlock.Information
 191                                         ==(!create ? FILE_OPENED : FILE_CREATED),
 192                         GNOME_VFS_ERROR_GENERIC);
 193
 194         captive_file_slave_object->file_Handle=file_Handle;
 195
 196         return GNOME_VFS_OK;
 197 }
 198
 199
 200 GnomeVFSResult captive_file_slave_new_open(CaptiveFileObject **captive_file_object_return,
 201                 CaptiveVfsObject *captive_vfs_object,const gchar *pathname,GnomeVFSOpenMode mode)
 202 {
 203 GnomeVFSResult r;
 204 CaptiveFileSlaveObject *captive_file_slave_object;
 205
 206         g_return_val_if_fail(captive_file_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 207         g_return_val_if_fail(CAPTIVE_VFS_SLAVE_IS_OBJECT(captive_vfs_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 208         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 209
 210         captive_file_slave_object=g_object_new(
 211                         CAPTIVE_FILE_SLAVE_TYPE_OBJECT, /* object_type */
 212                         NULL);  /* first_property_name; FIXME: support properties */
 213
 214         captive_file_init(CAPTIVE_FILE_OBJECT(captive_file_slave_object),captive_vfs_object);
 215
 216         *captive_file_object_return=CAPTIVE_FILE_OBJECT(captive_file_slave_object);
 217
 218         r=captive_file_slave_new_internal(captive_file_slave_object,pathname,mode,
 219                         FALSE,  /* create */
 220                         FALSE,  /* create_exclusive; ignored */
 221                         0);     /* create_perm; ignored */
 222
 223         captive_leave();
 224         if (r==GNOME_VFS_OK)
 225                 captive_usecount(+1);
 226         else {
 227                 g_object_unref(captive_file_slave_object);
 228                 *captive_file_object_return=NULL;
 229                 }
 230         return r;
 231 }
 232
 233
 234 GnomeVFSResult captive_file_slave_new_create(CaptiveFileObject **captive_file_object_return,
 235                 CaptiveVfsObject *captive_vfs_object,const gchar *pathname,GnomeVFSOpenMode mode,gboolean exclusive,guint perm)
 236 {
 237 GnomeVFSResult r;
 238 CaptiveFileSlaveObject *captive_file_slave_object;
 239
 240         g_return_val_if_fail(captive_file_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 241         g_return_val_if_fail(CAPTIVE_VFS_SLAVE_IS_OBJECT(captive_vfs_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 242         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 243
 244         captive_file_slave_object=g_object_new(
 245                         CAPTIVE_FILE_SLAVE_TYPE_OBJECT, /* object_type */
 246                         NULL);  /* first_property_name; FIXME: support properties */
 247
 248         captive_file_init(CAPTIVE_FILE_OBJECT(captive_file_slave_object),captive_vfs_object);
 249
 250         *captive_file_object_return=CAPTIVE_FILE_OBJECT(captive_file_slave_object);
 251
 252         r=captive_file_slave_new_internal(captive_file_slave_object,pathname,mode,
 253                         TRUE,   /* create */
 254                         exclusive,      /* create_exclusive */
 255                         perm);  /* create_perm */
 256
 257         captive_leave();
 258         if (r==GNOME_VFS_OK)
 259                 captive_usecount(+1);
 260         else {
 261                 g_object_unref(captive_file_slave_object);
 262                 *captive_file_object_return=NULL;
 263                 }
 264         return r;
 265 }
 266
 267
 268 static GnomeVFSResult captive_file_slave_close(CaptiveFileObject *captive_file_object)
 269 {
 270 CaptiveFileSlaveObject *captive_file_slave_object;
 271 NTSTATUS err;
 272 HANDLE file_Handle;
 273
 274         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 275
 276         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 277
 278         if (captive_file_slave_object->file_Handle!=NULL) {     /* not yet already closed */
 279                 captive_usecount(-1);   /* close() errors notwithstanding */
 280
 281                 file_Handle=captive_file_slave_object->file_Handle;
 282                 captive_file_slave_object->file_Handle=NULL;
 283                 err=NtClose(file_Handle);
 284                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 285                 }
 286
 287         captive_leave();
 288         return GNOME_VFS_OK;
 289 }
 290
 291
 292 GnomeVFSResult captive_file_slave_read(CaptiveFileObject *captive_file_object,
 293                 gpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_read_return)
 294 {
 295 CaptiveFileSlaveObject *captive_file_slave_object;
 296 NTSTATUS err;
 297 IO_STATUS_BLOCK file_IoStatusBlock;
 298 LARGE_INTEGER file_offset;
 299 GnomeVFSResult errvfsresult;
 300
 301         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 302         g_return_val_if_fail(buffer!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 303         g_return_val_if_fail(bytes_read_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 304         g_return_val_if_fail(num_bytes==(ULONG)num_bytes,GNOME_VFS_ERROR_BAD_PARAMETERS);
 305
 306         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 307
 308         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 309
 310         file_offset.QuadPart=captive_file_slave_object->offset;
 311         err=NtReadFile(
 312                         captive_file_slave_object->file_Handle, /* FileHandle */
 313                         NULL,   /* EventHandle; completion signalling; optional */
 314                         NULL,   /* ApcRoutine; optional */
 315                         NULL,   /* ApcContext; optional */
 316                         &file_IoStatusBlock,    /* IoStatusBlock */
 317                         buffer, /* Buffer */
 318                         num_bytes,      /* Length */
 319                         &file_offset,   /* ByteOffset */
 320                         NULL);  /* Key; NULL means no file locking key */
 321         if (err==STATUS_END_OF_FILE) {
 322                 g_return_val_if_fail(file_IoStatusBlock.Status==STATUS_END_OF_FILE,GNOME_VFS_ERROR_GENERIC);
 323                 g_return_val_if_fail(file_IoStatusBlock.Information==0,GNOME_VFS_ERROR_GENERIC);
 324                 *bytes_read_return=0;
 325                 return GNOME_VFS_ERROR_EOF;
 326                 }
 327         g_return_val_if_fail(file_IoStatusBlock.Information>0,GNOME_VFS_ERROR_GENERIC); /* if not STATUS_END_OF_FILE... */
 328         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 329                 return errvfsresult;
 330         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 331         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 332         g_return_val_if_fail(file_IoStatusBlock.Information<=num_bytes,GNOME_VFS_ERROR_GENERIC);
 333
 334         captive_file_slave_object->offset+=file_IoStatusBlock.Information;
 335         *bytes_read_return=file_IoStatusBlock.Information;
 336         captive_leave();
 337         return GNOME_VFS_OK;
 338 }
 339
 340
 341 GnomeVFSResult captive_file_slave_write(CaptiveFileObject *captive_file_object,
 342                 gconstpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_written_return)
 343 {
 344 CaptiveFileSlaveObject *captive_file_slave_object;
 345 NTSTATUS err;
 346 IO_STATUS_BLOCK file_IoStatusBlock;
 347 LARGE_INTEGER file_offset;
 348 GnomeVFSFileInfo file_info;
 349 GnomeVFSFileSize endoffile_wanted;
 350 GnomeVFSResult errvfsresult;
 351 static GnomeVFSFileSize total_written=0;
 352
 353         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 354         g_return_val_if_fail(buffer!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 355         g_return_val_if_fail(bytes_written_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 356         g_return_val_if_fail(num_bytes==(ULONG)num_bytes,GNOME_VFS_ERROR_BAD_PARAMETERS);
 357
 358         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 359
 360         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 361
 362         /* FIXME: Workaround memory consumption for non-journalled fastfat.sys */
 363         if (total_written>=MAX_FILE_WRITTEN && captive_options->sandbox)
 364                 return GNOME_VFS_ERROR_SERVICE_OBSOLETE;
 365         total_written+=num_bytes;
 366
 367         if ((GnomeVFSFileOffset)(captive_file_slave_object->offset+num_bytes) < captive_file_slave_object->offset)
 368                 return GNOME_VFS_ERROR_TOO_BIG;
 369         endoffile_wanted=captive_file_slave_object->offset+num_bytes;
 370         if (GNOME_VFS_OK!=(errvfsresult=captive_file_slave_file_info_get(
 371                         CAPTIVE_FILE_OBJECT(captive_file_slave_object),&file_info)))
 372                 return errvfsresult;
 373         if (file_info.size<endoffile_wanted) {
 374                 if (GNOME_VFS_OK!=(errvfsresult=captive_file_slave_truncate(
 375                                 CAPTIVE_FILE_OBJECT(captive_file_slave_object),endoffile_wanted)))
 376                         return errvfsresult;
 377                 }
 378
 379         file_offset.QuadPart=captive_file_slave_object->offset;
 380         err=NtWriteFile(
 381                         captive_file_slave_object->file_Handle, /* FileHandle */
 382                         NULL,   /* Event; completion signalling; optional */
 383                         NULL,   /* ApcRoutine; optional */
 384                         NULL,   /* ApcContext; optional */
 385                         &file_IoStatusBlock,    /* IoStatusBlock */
 386                         (gpointer /* de-const */ )buffer,       /* Buffer */
 387                         num_bytes,      /* Length */
 388                         &file_offset,   /* ByteOffset */
 389                         NULL);  /* Key; NULL means no file locking key */
 390         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 391         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 392         if (!file_IoStatusBlock.Information) {
 393                 /* FIXME: Check ExRaiseStatus(STATUS_LOG_FILE_FULL);
 394                  * really occured. We expect so and we will remount the volume.
 395                  */
 396                 *bytes_written_return=0;
 397                 return GNOME_VFS_ERROR_SERVICE_OBSOLETE;
 398                 }
 399         g_return_val_if_fail(file_IoStatusBlock.Information==num_bytes,GNOME_VFS_ERROR_GENERIC);
 400
 401         captive_file_slave_object->offset+=file_IoStatusBlock.Information;
 402         *bytes_written_return=file_IoStatusBlock.Information;
 403         captive_leave();
 404         return GNOME_VFS_OK;
 405 }
 406
 407
 408 GnomeVFSResult captive_file_slave_seek
 409                 (CaptiveFileObject *captive_file_object,GnomeVFSSeekPosition whence,GnomeVFSFileOffset offset)
 410 {
 411 CaptiveFileSlaveObject *captive_file_slave_object;
 412
 413         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 414
 415         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 416
 417         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 418
 419         switch (whence) {
 420                 case GNOME_VFS_SEEK_START:
 421                         captive_file_slave_object->offset=offset;
 422                         break;
 423                 case GNOME_VFS_SEEK_CURRENT:
 424                         if (0
 425                                         || (offset>0 && (captive_file_slave_object->offset+offset)<captive_file_slave_object->offset)
 426                                         || (offset<0 && (captive_file_slave_object->offset+offset)>captive_file_slave_object->offset))
 427                                 return GNOME_VFS_ERROR_BAD_PARAMETERS;
 428                         captive_file_slave_object->offset+=offset;
 429                         break;
 430                 case GNOME_VFS_SEEK_END:
 431                         g_assert_not_reached(); /* NOT IMPLEMENTED YET */
 432                         break;
 433                 default:
 434                         g_return_val_if_reached(GNOME_VFS_ERROR_BAD_PARAMETERS);
 435                 }
 436
 437         captive_leave();
 438         return GNOME_VFS_OK;
 439 }
 440
 441
 442 GnomeVFSResult captive_file_slave_tell(CaptiveFileObject *captive_file_object,GnomeVFSFileOffset *offset_return)
 443 {
 444 CaptiveFileSlaveObject *captive_file_slave_object;
 445
 446         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 447         g_return_val_if_fail(offset_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 448
 449         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 450
 451         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 452
 453         *offset_return=captive_file_slave_object->offset;
 454         captive_leave();
 455         return GNOME_VFS_OK;
 456 }
 457
 458
 459 GnomeVFSResult captive_file_slave_remove(CaptiveFileObject *captive_file_object)
 460 {
 461 CaptiveFileSlaveObject *captive_file_slave_object;
 462 NTSTATUS err;
 463 FILE_DISPOSITION_INFORMATION FileDispositionInformation_struct;
 464 IO_STATUS_BLOCK file_IoStatusBlock;
 465 GnomeVFSResult errvfsresult;
 466
 467         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 468
 469         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 470
 471         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 472
 473         FileDispositionInformation_struct.DoDeleteFile=TRUE;
 474
 475         err=NtSetInformationFile(
 476                         captive_file_slave_object->file_Handle, /* FileHandle */
 477                         &file_IoStatusBlock,    /* IoStatusBlock */
 478                         &FileDispositionInformation_struct,     /* FileInformation */
 479                         sizeof(FileDispositionInformation_struct),      /* Length */
 480                         FileDispositionInformation);    /* FileInformationClass */
 481         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 482                 return errvfsresult;
 483         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 484
 485         captive_leave();
 486         return GNOME_VFS_OK;
 487 }
 488
 489
 490 /* Use 'FileNameInformationStruct' identifier instead of the logical 'FileNameInformation'
 491  * to prevent override of enum member 'FileNameInformation'
 492  */
 493 static GnomeVFSResult FileNameInformationStruct_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 494                 FILE_NAME_INFORMATION *FileNameInformationStruct)
 495 {
 496 UNICODE_STRING FileName_UnicodeString;
 497
 498         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_GENERIC);
 499         g_return_val_if_fail(FileNameInformationStruct!=NULL,GNOME_VFS_ERROR_GENERIC);
 500
 501         FileName_UnicodeString.Length=FileNameInformationStruct->FileNameLength;
 502         FileName_UnicodeString.MaximumLength=FileNameInformationStruct->FileNameLength
 503                         +sizeof(*FileNameInformationStruct->FileName);  /* 0-terminator */
 504
 505 #if 0   /* 'IoStatusBlock->Information' is sometimes weird, do not check it */
 506         g_assert((gpointer)(((char *)FileNameInformationStruct->FileName)+FileName_UnicodeString.Length)
 507                         <=(gpointer)(((char *)FileAllInformationStruct)+IoStatusBlock->Information));
 508                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 509 #endif
 510
 511         FileNameInformationStruct->FileName[FileNameInformationStruct->FileNameLength
 512                         /sizeof(*FileNameInformationStruct->FileName)]=0;       /* 0-terminate it */
 513         FileName_UnicodeString.Buffer=FileNameInformationStruct->FileName;
 514         file_info->name=captive_UnicodeString_to_utf8_malloc(&FileName_UnicodeString);
 515         /* '->name' assumed for 'file_info->valid_fields' */
 516
 517         return GNOME_VFS_OK;
 518 }
 519
 520
 521 /* Use 'FileBasicInformationStruct' identifier instead of the logical 'FileBasicInformation'
 522  * to prevent override of enum member 'FileBasicInformation'
 523  */
 524 static GnomeVFSResult FileBasicInformationStruct_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 525                 FILE_BASIC_INFORMATION *FileBasicInformationStruct)
 526 {
 527 BOOLEAN errBOOLEAN;
 528 ULONG tmp_ULONG;
 529
 530         /* FIXME: What is 'FILE_ATTRIBUTE_NORMAL'? */
 531         switch (FileBasicInformationStruct->FileAttributes & (0
 532                         | FILE_ATTRIBUTE_DIRECTORY
 533                         | FILE_ATTRIBUTE_DEVICE)) {
 534                 case 0:                        file_info->type=GNOME_VFS_FILE_TYPE_REGULAR;   break;
 535                 case FILE_ATTRIBUTE_DIRECTORY: file_info->type=GNOME_VFS_FILE_TYPE_DIRECTORY; break;
 536                 case FILE_ATTRIBUTE_DEVICE:    file_info->type=GNOME_VFS_FILE_TYPE_SOCKET;
 537                         /* or GNOME_VFS_FILE_TYPE_CHARACTER_DEVICE or GNOME_VFS_FILE_TYPE_BLOCK_DEVICE ? */
 538                         break;
 539                 default:                       file_info->type=GNOME_VFS_FILE_TYPE_UNKNOWN;   break;
 540                 }
 541         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
 542
 543         /* we use 0600 for r/w files, 0400 for FILE_ATTRIBUTE_READONLY */
 544         file_info->permissions=GNOME_VFS_PERM_USER_READ;
 545         if (file_info->type==GNOME_VFS_FILE_TYPE_DIRECTORY)
 546                 file_info->permissions|=GNOME_VFS_PERM_USER_EXEC;
 547         if (!(FileBasicInformationStruct->FileAttributes & FILE_ATTRIBUTE_READONLY))
 548                 file_info->permissions|=GNOME_VFS_PERM_USER_WRITE;
 549         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS;
 550
 551         if (FileBasicInformationStruct->LastAccessTime.QuadPart) {      /* it may be 0 if not set */
 552                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileBasicInformationStruct->LastAccessTime,&tmp_ULONG);
 553                 g_assert(errBOOLEAN==TRUE);
 554                 file_info->atime=tmp_ULONG;
 555                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_ATIME;
 556                 }
 557
 558         /* it may be 0 if not set */
 559         if (FileBasicInformationStruct->LastWriteTime.QuadPart || FileBasicInformationStruct->ChangeTime.QuadPart) {
 560                 errBOOLEAN=RtlTimeToSecondsSince1970(
 561                                 /* take the more recent (==bigger) time: */
 562                                 (FileBasicInformationStruct->LastWriteTime.QuadPart > FileBasicInformationStruct->ChangeTime.QuadPart
 563                                                 ? &FileBasicInformationStruct->LastWriteTime : &FileBasicInformationStruct->ChangeTime),
 564                                 &tmp_ULONG);
 565                 g_assert(errBOOLEAN==TRUE);
 566                 file_info->mtime=tmp_ULONG;
 567                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_MTIME;
 568                 }
 569
 570         if (FileBasicInformationStruct->CreationTime.QuadPart) {        /* it may be 0 if not set */
 571                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileBasicInformationStruct->CreationTime,&tmp_ULONG);
 572                 g_assert(errBOOLEAN==TRUE);
 573                 file_info->ctime=tmp_ULONG;
 574                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_CTIME;
 575                 }
 576
 577         return GNOME_VFS_OK;
 578 }
 579
 580
 581 /* Use 'FileStandardInformationStruct' identifier instead of the logical 'FileStandardInformation'
 582  * to prevent override of enum member 'FileStandardInformation'
 583  */
 584 static GnomeVFSResult FileStandardInformationStruct_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 585                 FILE_STANDARD_INFORMATION *FileStandardInformationStruct)
 586 {
 587         file_info->size=FileStandardInformationStruct->EndOfFile.QuadPart;
 588         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_SIZE;
 589
 590         file_info->block_count=FileStandardInformationStruct->AllocationSize.QuadPart/512;
 591         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_BLOCK_COUNT;
 592
 593         return GNOME_VFS_OK;
 594 }
 595
 596
 597 GnomeVFSResult captive_file_slave_file_info_get(CaptiveFileObject *captive_file_object,
 598                 GnomeVFSFileInfo *file_info)
 599 {
 600 CaptiveFileSlaveObject *captive_file_slave_object;
 601 NTSTATUS err;
 602 IO_STATUS_BLOCK file_IoStatusBlock;
 603 FILE_NAME_INFORMATION *FileNameInformationStruct;
 604 FILE_BASIC_INFORMATION *FileBasicInformationStruct;
 605 FILE_STANDARD_INFORMATION *FileStandardInformationStruct;
 606 GnomeVFSResult errvfsresult;
 607 char QueryFile_buf[sizeof(FILE_NAME_INFORMATION)
 608                 +0x1000 /* max 'FileName' length, 255 should be enough */ * sizeof(WCHAR /* *FILE_ALL_INFORMATION.NameInformation.FileName */ )];
 609
 610         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 611         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 612
 613         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 614
 615         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 616
 617         /* ntfs.sys of NT-5.1sp1 has *(FILE_BASIC_INFORMATION *)FILE_ALL_INFORMATION.BasicInformation
 618          * size 0x28 although reactos includes and all the information says 0x24.
 619          * fastfat.sys of NT-5.1sp1 also has the 'official' sizeof 0x24.
 620          * It would be a bit of heuristic to correctly detect its expected sizeof.
 621          */
 622
 623         file_info->valid_fields=0;
 624
 625         file_info->flags=GNOME_VFS_FILE_FLAGS_LOCAL;
 626         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_FLAGS;
 627
 628         /* query NameInformation */
 629         FileNameInformationStruct=(void *)QueryFile_buf;
 630         err=NtQueryInformationFile(
 631                         captive_file_slave_object->file_Handle, /* FileHandle */
 632                         &file_IoStatusBlock,    /* IoStatusBlock */
 633                         (gpointer)QueryFile_buf,        /* FileInformation */
 634                         sizeof(QueryFile_buf)   /* Length */
 635                                         -sizeof(*FileNameInformationStruct->FileName),  /* reserve space for a possible 0-terminator */
 636                         FileNameInformation);   /* FileInformationClass; =>FILE_NAME_INFORMATION */
 637         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 638                 return errvfsresult;
 639         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 640         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 641         errvfsresult=FileNameInformationStruct_to_GnomeVFSFileInfo(file_info,FileNameInformationStruct);
 642         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 643
 644         /* query BasicInformation */
 645         FileBasicInformationStruct=(void *)QueryFile_buf;
 646         err=NtQueryInformationFile(
 647                         captive_file_slave_object->file_Handle, /* FileHandle */
 648                         &file_IoStatusBlock,    /* IoStatusBlock */
 649                         (gpointer)QueryFile_buf,        /* FileInformation */
 650                         sizeof(QueryFile_buf),  /* Length */
 651                         FileBasicInformation);  /* FileInformationClass; =>FILE_BASIC_INFORMATION */
 652         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 653                 return errvfsresult;
 654         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 655         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 656         errvfsresult=FileBasicInformationStruct_to_GnomeVFSFileInfo(file_info,FileBasicInformationStruct);
 657         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 658
 659         /* query StandardInformation */
 660         FileStandardInformationStruct=(void *)QueryFile_buf;
 661         err=NtQueryInformationFile(
 662                         captive_file_slave_object->file_Handle, /* FileHandle */
 663                         &file_IoStatusBlock,    /* IoStatusBlock */
 664                         (gpointer)QueryFile_buf,        /* FileInformation */
 665                         sizeof(QueryFile_buf),  /* Length */
 666                         FileStandardInformation);       /* FileInformationClass; =>FILE_STANDARD_INFORMATION */
 667         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 668                 return errvfsresult;
 669         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 670         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 671         errvfsresult=FileStandardInformationStruct_to_GnomeVFSFileInfo(file_info,FileStandardInformationStruct);
 672         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 673
 674         captive_leave();
 675         return GNOME_VFS_OK;
 676 }
 677
 678
 679 GnomeVFSResult captive_file_slave_file_info_set(CaptiveFileObject *captive_file_object,
 680     const GnomeVFSFileInfo *info,GnomeVFSSetFileInfoMask mask)
 681 {
 682 CaptiveFileSlaveObject *captive_file_slave_object;
 683
 684         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 685         g_return_val_if_fail(info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 686
 687         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 688
 689         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 690
 691         if (mask & GNOME_VFS_SET_FILE_INFO_NAME) {
 692 gchar *name_dirname,*name_basename;
 693 UNICODE_STRING *name_UnicodeString;
 694 FILE_RENAME_INFORMATION *FileRenameInformation_structp;
 695 gsize FileRenameInformation_struct_len;
 696 IO_STATUS_BLOCK file_IoStatusBlock;
 697 NTSTATUS err=STATUS_SUCCESS;    /* Prevent: ... might be used uninitialized in this function */
 698 GnomeVFSResult errvfsresult;
 699
 700                 /* non-existing dirname assertion */
 701                 name_dirname=g_path_get_dirname(info->name);
 702                 if (*name_dirname) {
 703                         g_assert_not_reached();
 704                         errvfsresult=GNOME_VFS_ERROR_BAD_PARAMETERS;
 705                         goto err;
 706                         }
 707
 708                 /* fully-matching basename assertion */
 709                 name_basename=g_path_get_basename(info->name);
 710                 if (strcmp(name_basename,info->name)) {
 711                         g_assert_not_reached();
 712                         errvfsresult=GNOME_VFS_ERROR_BAD_PARAMETERS;
 713                         goto err_free_name_dirname;
 714                         }
 715
 716                 name_UnicodeString=captive_utf8_to_UnicodeString_alloca(info->name);
 717                 FileRenameInformation_struct_len=sizeof(*FileRenameInformation_structp)
 718                                 +name_UnicodeString->MaximumLength;     /* ==Length+(0-terminator); is the terminator needed? */
 719
 720                 FileRenameInformation_structp=g_alloca(FileRenameInformation_struct_len);
 721                 FileRenameInformation_structp->Replace=FALSE;
 722                 FileRenameInformation_structp->RootDir=NULL;    /* we do 'simple rename' here */
 723                 FileRenameInformation_structp->FileNameLength=name_UnicodeString->Length;
 724                 memcpy(FileRenameInformation_structp->FileName,name_UnicodeString->Buffer,
 725                                 name_UnicodeString->MaximumLength);     /* ==Length+(0-terminator); is the terminator needed? */
 726
 727                 err=NtSetInformationFile(
 728                                 captive_file_slave_object->file_Handle, /* FileHandle */
 729                                 &file_IoStatusBlock,    /* IoStatusBlock */
 730                                 FileRenameInformation_structp,  /* FileInformation */
 731                                 FileRenameInformation_struct_len,       /* Length */
 732                                 FileRenameInformation); /* FileInformationClass */
 733                 if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 734                         goto err_free_name_basename;
 735
 736 err_free_name_basename:
 737                 g_free(name_basename);
 738 err_free_name_dirname:
 739                 g_free(name_dirname);
 740 err:
 741
 742                 if (errvfsresult!=GNOME_VFS_OK)
 743                         return errvfsresult;
 744                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 745                 }
 746
 747         if (mask & (GNOME_VFS_SET_FILE_INFO_PERMISSIONS | GNOME_VFS_SET_FILE_INFO_TIME)) {
 748 char FileBasicInformation_buf[sizeof(FILE_BASIC_INFORMATION)+4];
 749 FILE_BASIC_INFORMATION *FileBasicInformationp=(FILE_BASIC_INFORMATION *)FileBasicInformation_buf;
 750 IO_STATUS_BLOCK file_IoStatusBlock;
 751 NTSTATUS err;
 752
 753                 /* FIXME: Everywhere is is the declaration with 4xLARGE_INTEGER+1xULONG==36 bytes
 754                  * but the precompiled ext2fsd.sys wants 40 bytes - why?
 755                  * The same case applies to ntfs.sys of NT-5.1sp1.
 756                  */
 757                 g_assert(sizeof(FILE_BASIC_INFORMATION)==36);
 758                 g_assert(sizeof(FileBasicInformation_buf)==40);
 759                 err=NtQueryInformationFile(
 760                                 captive_file_slave_object->file_Handle, /* FileHandle */
 761                                 &file_IoStatusBlock,    /* IoStatusBlock */
 762                                 FileBasicInformation_buf,       /* FileInformation */
 763                                 sizeof(FileBasicInformation_buf),       /* Length */
 764                                 FileBasicInformation);  /* FileInformationClass */
 765                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 766
 767                 if (mask & GNOME_VFS_SET_FILE_INFO_PERMISSIONS) {
 768                         FileBasicInformationp->FileAttributes&=~FILE_ATTRIBUTE_READONLY;
 769                         g_assert(info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS);
 770                         if (!(info->permissions&0200))
 771                                 FileBasicInformationp->FileAttributes|=FILE_ATTRIBUTE_READONLY;
 772                         }
 773
 774                 if (mask & GNOME_VFS_SET_FILE_INFO_TIME) {
 775                         g_assert(info->valid_fields & (0
 776                                         | GNOME_VFS_FILE_INFO_FIELDS_ATIME
 777                                         | GNOME_VFS_FILE_INFO_FIELDS_MTIME
 778                                         | GNOME_VFS_FILE_INFO_FIELDS_CTIME));
 779                         if (info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_ATIME) {
 780                                 RtlSecondsSince1970ToTime(
 781                                                 info->atime,    /* SecondsSince1970 */
 782                                                 &FileBasicInformationp->LastAccessTime);        /* Time */
 783                                 }
 784                         if (info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_MTIME) {
 785                                 RtlSecondsSince1970ToTime(
 786                                                 info->mtime,    /* SecondsSince1970 */
 787                                                 &FileBasicInformationp->LastWriteTime); /* Time */
 788                                 FileBasicInformationp->ChangeTime=FileBasicInformationp->LastWriteTime;
 789                                 }
 790                         if (info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_CTIME) {
 791                                 RtlSecondsSince1970ToTime(
 792                                                 info->ctime,    /* SecondsSince1970 */
 793                                                 &FileBasicInformationp->CreationTime);  /* Time */
 794                                 }
 795                         }
 796
 797                 err=NtSetInformationFile(
 798                                 captive_file_slave_object->file_Handle, /* FileHandle */
 799                                 &file_IoStatusBlock,    /* IoStatusBlock */
 800                                 FileBasicInformation_buf,       /* FileInformation */
 801                                 sizeof(FileBasicInformation_buf),       /* Length */
 802                                 FileBasicInformation);  /* FileInformationClass */
 803                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 804                 }
 805
 806         if (mask & GNOME_VFS_SET_FILE_INFO_OWNER) {
 807                 /* FIXME: g_assert(info->valid_fields & ???); */
 808                 /* owner ignored for W32 */
 809                 }
 810
 811         captive_leave();
 812         return GNOME_VFS_OK;
 813 }
 814
 815
 816 GnomeVFSResult captive_file_slave_truncate(CaptiveFileObject *captive_file_object,GnomeVFSFileSize file_size)
 817 {
 818 CaptiveFileSlaveObject *captive_file_slave_object;
 819 NTSTATUS err;
 820 FILE_END_OF_FILE_INFORMATION FileEndOfFileInformation_struct;
 821 IO_STATUS_BLOCK file_IoStatusBlock;
 822 GnomeVFSResult errvfsresult;
 823
 824         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 825
 826         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 827
 828         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 829
 830         FileEndOfFileInformation_struct.EndOfFile.QuadPart=file_size;
 831
 832         err=NtSetInformationFile(
 833                         captive_file_slave_object->file_Handle, /* FileHandle */
 834                         &file_IoStatusBlock,    /* IoStatusBlock */
 835                         &FileEndOfFileInformation_struct,       /* FileInformation */
 836                         sizeof(FileEndOfFileInformation_struct),        /* Length */
 837                         FileEndOfFileInformation);      /* FileInformationClass */
 838         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 839                 return errvfsresult;
 840         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 841
 842         captive_leave();
 843         return GNOME_VFS_OK;
 844 }
 845
 846
 847 GnomeVFSResult captive_file_slave_move
 848                 (CaptiveFileObject *captive_file_object_old,const gchar *pathname_new,gboolean force_replace)
 849 {
 850 CaptiveFileSlaveObject *captive_file_slave_object_old;
 851 NTSTATUS err;
 852 FILE_RENAME_INFORMATION *FileRenameInformation_structp;
 853 IO_STATUS_BLOCK file_IoStatusBlock;
 854 GnomeVFSResult errvfsresult;
 855 OBJECT_ATTRIBUTES pathname_new_ObjectAttributes;
 856
 857         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object_old),GNOME_VFS_ERROR_BAD_PARAMETERS);
 858         g_return_val_if_fail(pathname_new!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 859
 860         captive_file_slave_object_old=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object_old);
 861
 862         g_return_val_if_fail(captive_file_slave_object_old->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 863
 864         errvfsresult=captive_ObjectAttributes_init(pathname_new,&pathname_new_ObjectAttributes);
 865         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 866
 867         FileRenameInformation_structp=
 868                         g_alloca(sizeof(*FileRenameInformation_structp)+pathname_new_ObjectAttributes.ObjectName->MaximumLength);
 869         FileRenameInformation_structp->Replace=force_replace;
 870         FileRenameInformation_structp->RootDir=0;       /* AFAIK never set by orig W32 */
 871         FileRenameInformation_structp->FileNameLength=pathname_new_ObjectAttributes.ObjectName->Length;
 872         memcpy(FileRenameInformation_structp->FileName,pathname_new_ObjectAttributes.ObjectName->Buffer,
 873                         pathname_new_ObjectAttributes.ObjectName->MaximumLength);
 874
 875         err=NtSetInformationFile(
 876                         captive_file_slave_object_old->file_Handle,     /* FileHandle */
 877                         &file_IoStatusBlock,    /* IoStatusBlock */
 878                         FileRenameInformation_structp,  /* FileInformation */
 879                         sizeof(*FileRenameInformation_structp)+pathname_new_ObjectAttributes.ObjectName->MaximumLength, /* Length */
 880                         FileRenameInformation); /* FileInformationClass */
 881         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 882                 goto err_free_ObjectAttributes;
 883         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 884
 885         errvfsresult=GNOME_VFS_OK;
 886
 887 err_free_ObjectAttributes:
 888         g_free(pathname_new_ObjectAttributes.ObjectName);       /* left from captive_file_slave_uri_parent_init() */
 889
 890         captive_leave();
 891         return errvfsresult;
 892 }