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_READ   0x1000000       /* FIXME: Workaround memory consumption for non-journalled fastfat.sys */
  44 #define MAX_FILE_WRITTEN 0x100000       /* FIXME: Workaround memory consumption for non-journalled fastfat.sys */
  45
  46
  47 struct _CaptiveFileSlaveObject {
  48         CaptiveFileObject parent_instance;
  49
  50         /*< private >*/
  51         HANDLE file_Handle;
  52         GnomeVFSFileOffset offset;
  53         };
  54 struct _CaptiveFileSlaveObjectClass {
  55         CaptiveFileObjectClass parent_class;
  56         };
  57
  58
  59 static gpointer captive_file_slave_object_parent_class=NULL;
  60
  61
  62 static GnomeVFSResult captive_file_slave_close(CaptiveFileObject *captive_file_object);
  63 static GnomeVFSResult captive_file_slave_read(CaptiveFileObject *captive_file_object,
  64                 gpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_read_return);
  65 static GnomeVFSResult captive_file_slave_write(CaptiveFileObject *captive_file_object,
  66                 gconstpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_written_return);
  67 static GnomeVFSResult captive_file_slave_seek
  68                 (CaptiveFileObject *captive_file_object,GnomeVFSSeekPosition whence,GnomeVFSFileOffset offset);
  69 static GnomeVFSResult captive_file_slave_tell(CaptiveFileObject *captive_file_object,GnomeVFSFileOffset *offset_return);
  70 static GnomeVFSResult captive_file_slave_remove(CaptiveFileObject *captive_file_object);
  71 static GnomeVFSResult captive_file_slave_file_info_get
  72                 (CaptiveFileObject *captive_file_object,GnomeVFSFileInfo *file_info);
  73 static GnomeVFSResult captive_file_slave_file_info_set
  74                 (CaptiveFileObject *captive_file_object,const GnomeVFSFileInfo *info,GnomeVFSSetFileInfoMask mask);
  75 static GnomeVFSResult captive_file_slave_truncate(CaptiveFileObject *captive_file_object,GnomeVFSFileSize file_size);
  76 static GnomeVFSResult captive_file_slave_move
  77                 (CaptiveFileObject *captive_file_object_old,const gchar *pathname_new,gboolean force_replace);
  78
  79
  80 static void captive_file_slave_object_finalize(CaptiveFileSlaveObject *captive_file_slave_object)
  81 {
  82         g_return_if_fail(captive_file_slave_object!=NULL);
  83
  84         captive_file_slave_close(CAPTIVE_FILE_OBJECT(captive_file_slave_object));       /* errors ignored */
  85
  86         G_OBJECT_CLASS(captive_file_slave_object_parent_class)->finalize((GObject *)captive_file_slave_object);
  87 }
  88
  89
  90 static void captive_file_slave_object_class_init(CaptiveFileSlaveObjectClass *class)
  91 {
  92 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
  93 CaptiveFileObjectClass *captive_file_object_class=CAPTIVE_FILE_OBJECT_CLASS(class);
  94
  95         captive_file_slave_object_parent_class=g_type_class_ref(g_type_parent(G_TYPE_FROM_CLASS(class)));
  96         gobject_class->finalize=(void (*)(GObject *object))captive_file_slave_object_finalize;
  97
  98         captive_file_object_class->read=captive_file_slave_read;
  99         captive_file_object_class->write=captive_file_slave_write;
 100         captive_file_object_class->seek=captive_file_slave_seek;
 101         captive_file_object_class->tell=captive_file_slave_tell;
 102         captive_file_object_class->remove=captive_file_slave_remove;
 103         captive_file_object_class->file_info_get=captive_file_slave_file_info_get;
 104         captive_file_object_class->file_info_set=captive_file_slave_file_info_set;
 105         captive_file_object_class->truncate=captive_file_slave_truncate;
 106         captive_file_object_class->move=captive_file_slave_move;
 107 }
 108
 109
 110 static void captive_file_slave_object_init(CaptiveFileSlaveObject *captive_file_slave_object)
 111 {
 112         captive_file_slave_object->file_Handle=NULL;
 113 }
 114
 115
 116 GType captive_file_slave_object_get_type(void)
 117 {
 118 static GType captive_file_slave_object_type=0;
 119
 120         if (!captive_file_slave_object_type) {
 121 static const GTypeInfo captive_file_slave_object_info={
 122                                 sizeof(CaptiveFileSlaveObjectClass),
 123                                 NULL,   /* base_init */
 124                                 NULL,   /* base_finalize */
 125                                 (GClassInitFunc)captive_file_slave_object_class_init,
 126                                 NULL,   /* class_finalize */
 127                                 NULL,   /* class_data */
 128                                 sizeof(CaptiveFileSlaveObject),
 129                                 5,      /* n_preallocs */
 130                                 (GInstanceInitFunc)captive_file_slave_object_init,
 131                                 };
 132
 133                 captive_file_slave_object_type=g_type_register_static(CAPTIVE_FILE_TYPE_OBJECT,
 134                                 "CaptiveFileSlaveObject",&captive_file_slave_object_info,0);
 135                 }
 136
 137         return captive_file_slave_object_type;
 138 }
 139
 140
 141 static GnomeVFSResult captive_file_slave_new_internal(CaptiveFileSlaveObject *captive_file_slave_object,
 142                 const gchar *pathname,GnomeVFSOpenMode mode,gboolean create,gboolean create_exclusive,guint create_perm)
 143 {
 144 IO_STATUS_BLOCK file_IoStatusBlock;
 145 GnomeVFSResult errvfsresult;
 146 OBJECT_ATTRIBUTES file_ObjectAttributes;
 147 HANDLE file_Handle;
 148 NTSTATUS err;
 149
 150         g_return_val_if_fail(captive_file_slave_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 151         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 152
 153         errvfsresult=captive_ObjectAttributes_init(pathname,&file_ObjectAttributes);
 154         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 155
 156         /* open */
 157         err=IoCreateFile(
 158                         &file_Handle,   /* FileHandle */
 159                         0
 160                                         /* sniffed: | SYNCHRONIZE       */
 161                                         |(!(mode&GNOME_VFS_OPEN_READ ) ? 0 : FILE_READ_DATA)
 162                                         |(!(mode&GNOME_VFS_OPEN_WRITE) ? 0 : FILE_WRITE_DATA | FILE_APPEND_DATA | FILE_WRITE_ATTRIBUTES)
 163                                         |(  mode!=0                    ? 0 : FILE_READ_ATTRIBUTES)
 164                                         ,       /* DesiredAccess */
 165                         &file_ObjectAttributes, /* ObjectAttributes */
 166                         &file_IoStatusBlock,    /* IoStatusBlock */
 167                         NULL,   /* AllocationSize; ignored for open */
 168                         (!create || create_perm&0200 ? FILE_ATTRIBUTE_NORMAL: FILE_ATTRIBUTE_READONLY), /* FileAttributes; ignored for open */
 169                         (!create || !create_exclusive   /* ShareAccess; 0 means exclusive */
 170                                         ? (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
 171                                         : 0),
 172                         (!create ? FILE_OPEN : FILE_CREATE),    /* CreateDisposition */
 173                         /* FILE_SYNCHRONOUS_IO_{,NON}ALERT: We need to allow W32 filesystem
 174                                  * any waits to not to let it return STATUS_CANT_WAIT us.
 175                                  * Alertability should have only effect on asynchronous events
 176                                  * from KeWaitForSingleObject() by setting/clearing its parameter 'Alertable'.
 177                                  */
 178                         FILE_SYNCHRONOUS_IO_ALERT       /* CreateOptions */
 179                                         /* sniffed: | FILE_DIRECTORY_FILE */
 180                                         /* sniffed: | FILE_OPEN_FOR_BACKUP_INTENT */
 181                                         ,
 182                         NULL,   /* EaBuffer */
 183                         0,      /* EaLength */
 184                         CreateFileTypeNone,     /* CreateFileType */
 185                         NULL,   /* ExtraCreateParameters */
 186                         0);     /* Options */
 187         g_free(file_ObjectAttributes.ObjectName);       /* left from captive_file_slave_uri_parent_init() */
 188         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 189         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 190                 return errvfsresult;
 191         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 192         g_return_val_if_fail(file_IoStatusBlock.Information
 193                                         ==(!create ? FILE_OPENED : FILE_CREATED),
 194                         GNOME_VFS_ERROR_GENERIC);
 195
 196         captive_file_slave_object->file_Handle=file_Handle;
 197
 198         return GNOME_VFS_OK;
 199 }
 200
 201
 202 GnomeVFSResult captive_file_slave_new_open(CaptiveFileObject **captive_file_object_return,
 203                 CaptiveVfsObject *captive_vfs_object,const gchar *pathname,GnomeVFSOpenMode mode)
 204 {
 205 GnomeVFSResult r;
 206 CaptiveFileSlaveObject *captive_file_slave_object;
 207
 208         g_return_val_if_fail(captive_file_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 209         g_return_val_if_fail(CAPTIVE_VFS_SLAVE_IS_OBJECT(captive_vfs_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 210         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 211
 212         captive_file_slave_object=g_object_new(
 213                         CAPTIVE_FILE_SLAVE_TYPE_OBJECT, /* object_type */
 214                         NULL);  /* first_property_name; FIXME: support properties */
 215
 216         captive_file_init(CAPTIVE_FILE_OBJECT(captive_file_slave_object),captive_vfs_object);
 217
 218         *captive_file_object_return=CAPTIVE_FILE_OBJECT(captive_file_slave_object);
 219
 220         r=captive_file_slave_new_internal(captive_file_slave_object,pathname,mode,
 221                         FALSE,  /* create */
 222                         FALSE,  /* create_exclusive; ignored */
 223                         0);     /* create_perm; ignored */
 224
 225         captive_leave();
 226         if (r==GNOME_VFS_OK)
 227                 captive_usecount(+1);
 228         else {
 229                 g_object_unref(captive_file_slave_object);
 230                 *captive_file_object_return=NULL;
 231                 }
 232         return r;
 233 }
 234
 235
 236 GnomeVFSResult captive_file_slave_new_create(CaptiveFileObject **captive_file_object_return,
 237                 CaptiveVfsObject *captive_vfs_object,const gchar *pathname,GnomeVFSOpenMode mode,gboolean exclusive,guint perm)
 238 {
 239 GnomeVFSResult r;
 240 CaptiveFileSlaveObject *captive_file_slave_object;
 241
 242         g_return_val_if_fail(captive_file_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 243         g_return_val_if_fail(CAPTIVE_VFS_SLAVE_IS_OBJECT(captive_vfs_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 244         g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 245
 246         captive_file_slave_object=g_object_new(
 247                         CAPTIVE_FILE_SLAVE_TYPE_OBJECT, /* object_type */
 248                         NULL);  /* first_property_name; FIXME: support properties */
 249
 250         captive_file_init(CAPTIVE_FILE_OBJECT(captive_file_slave_object),captive_vfs_object);
 251
 252         *captive_file_object_return=CAPTIVE_FILE_OBJECT(captive_file_slave_object);
 253
 254         r=captive_file_slave_new_internal(captive_file_slave_object,pathname,mode,
 255                         TRUE,   /* create */
 256                         exclusive,      /* create_exclusive */
 257                         perm);  /* create_perm */
 258
 259         captive_leave();
 260         if (r==GNOME_VFS_OK)
 261                 captive_usecount(+1);
 262         else {
 263                 g_object_unref(captive_file_slave_object);
 264                 *captive_file_object_return=NULL;
 265                 }
 266         return r;
 267 }
 268
 269
 270 static GnomeVFSResult captive_file_slave_close(CaptiveFileObject *captive_file_object)
 271 {
 272 CaptiveFileSlaveObject *captive_file_slave_object;
 273 NTSTATUS err;
 274 HANDLE file_Handle;
 275
 276         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 277
 278         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 279
 280         if (captive_file_slave_object->file_Handle!=NULL) {     /* not yet already closed */
 281                 captive_usecount(-1);   /* close() errors notwithstanding */
 282
 283                 file_Handle=captive_file_slave_object->file_Handle;
 284                 captive_file_slave_object->file_Handle=NULL;
 285                 err=NtClose(file_Handle);
 286                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 287                 }
 288
 289         captive_leave();
 290         return GNOME_VFS_OK;
 291 }
 292
 293
 294 GnomeVFSResult captive_file_slave_read(CaptiveFileObject *captive_file_object,
 295                 gpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_read_return)
 296 {
 297 CaptiveFileSlaveObject *captive_file_slave_object;
 298 NTSTATUS err;
 299 IO_STATUS_BLOCK file_IoStatusBlock;
 300 LARGE_INTEGER file_offset;
 301 GnomeVFSResult errvfsresult;
 302 static GnomeVFSFileSize total_read=0;
 303
 304         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 305         g_return_val_if_fail(buffer!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 306         g_return_val_if_fail(bytes_read_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 307         g_return_val_if_fail(num_bytes==(ULONG)num_bytes,GNOME_VFS_ERROR_BAD_PARAMETERS);
 308
 309         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 310
 311         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 312
 313         /* FIXME: Workaround memory consumption for non-journalled fastfat.sys */
 314         if (total_read>=MAX_FILE_READ && captive_options->sandbox)
 315                 return GNOME_VFS_ERROR_SERVICE_OBSOLETE;
 316         total_read+=num_bytes;
 317
 318         file_offset.QuadPart=captive_file_slave_object->offset;
 319         err=NtReadFile(
 320                         captive_file_slave_object->file_Handle, /* FileHandle */
 321                         NULL,   /* EventHandle; completion signalling; optional */
 322                         NULL,   /* ApcRoutine; optional */
 323                         NULL,   /* ApcContext; optional */
 324                         &file_IoStatusBlock,    /* IoStatusBlock */
 325                         buffer, /* Buffer */
 326                         num_bytes,      /* Length */
 327                         &file_offset,   /* ByteOffset */
 328                         NULL);  /* Key; NULL means no file locking key */
 329         if (err==STATUS_END_OF_FILE) {
 330                 g_return_val_if_fail(file_IoStatusBlock.Status==STATUS_END_OF_FILE,GNOME_VFS_ERROR_GENERIC);
 331                 g_return_val_if_fail(file_IoStatusBlock.Information==0,GNOME_VFS_ERROR_GENERIC);
 332                 *bytes_read_return=0;
 333                 return GNOME_VFS_ERROR_EOF;
 334                 }
 335         g_return_val_if_fail(file_IoStatusBlock.Information>0,GNOME_VFS_ERROR_GENERIC); /* if not STATUS_END_OF_FILE... */
 336         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 337                 return errvfsresult;
 338         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 339         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 340         g_return_val_if_fail(file_IoStatusBlock.Information<=num_bytes,GNOME_VFS_ERROR_GENERIC);
 341
 342         captive_file_slave_object->offset+=file_IoStatusBlock.Information;
 343         *bytes_read_return=file_IoStatusBlock.Information;
 344         captive_leave();
 345         return GNOME_VFS_OK;
 346 }
 347
 348
 349 GnomeVFSResult captive_file_slave_write(CaptiveFileObject *captive_file_object,
 350                 gconstpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_written_return)
 351 {
 352 CaptiveFileSlaveObject *captive_file_slave_object;
 353 NTSTATUS err;
 354 IO_STATUS_BLOCK file_IoStatusBlock;
 355 LARGE_INTEGER file_offset;
 356 GnomeVFSFileInfo file_info;
 357 GnomeVFSFileSize endoffile_wanted;
 358 GnomeVFSResult errvfsresult;
 359 static GnomeVFSFileSize total_written=0;
 360
 361         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 362         g_return_val_if_fail(buffer!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 363         g_return_val_if_fail(bytes_written_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 364         g_return_val_if_fail(num_bytes==(ULONG)num_bytes,GNOME_VFS_ERROR_BAD_PARAMETERS);
 365
 366         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 367
 368         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 369
 370         /* FIXME: Workaround memory consumption for non-journalled fastfat.sys */
 371         if (total_written>=MAX_FILE_WRITTEN && captive_options->sandbox)
 372                 return GNOME_VFS_ERROR_SERVICE_OBSOLETE;
 373         total_written+=num_bytes;
 374
 375         if ((GnomeVFSFileOffset)(captive_file_slave_object->offset+num_bytes) < captive_file_slave_object->offset)
 376                 return GNOME_VFS_ERROR_TOO_BIG;
 377         endoffile_wanted=captive_file_slave_object->offset+num_bytes;
 378         if (GNOME_VFS_OK!=(errvfsresult=captive_file_slave_file_info_get(
 379                         CAPTIVE_FILE_OBJECT(captive_file_slave_object),&file_info)))
 380                 return errvfsresult;
 381         if (file_info.size<endoffile_wanted) {
 382                 if (GNOME_VFS_OK!=(errvfsresult=captive_file_slave_truncate(
 383                                 CAPTIVE_FILE_OBJECT(captive_file_slave_object),endoffile_wanted)))
 384                         return errvfsresult;
 385                 }
 386
 387         file_offset.QuadPart=captive_file_slave_object->offset;
 388         err=NtWriteFile(
 389                         captive_file_slave_object->file_Handle, /* FileHandle */
 390                         NULL,   /* Event; completion signalling; optional */
 391                         NULL,   /* ApcRoutine; optional */
 392                         NULL,   /* ApcContext; optional */
 393                         &file_IoStatusBlock,    /* IoStatusBlock */
 394                         (gpointer /* de-const */ )buffer,       /* Buffer */
 395                         num_bytes,      /* Length */
 396                         &file_offset,   /* ByteOffset */
 397                         NULL);  /* Key; NULL means no file locking key */
 398         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 399         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 400         if (!file_IoStatusBlock.Information) {
 401                 /* FIXME: Check ExRaiseStatus(STATUS_LOG_FILE_FULL);
 402                  * really occured. We expect so and we will remount the volume.
 403                  */
 404                 *bytes_written_return=0;
 405                 return GNOME_VFS_ERROR_SERVICE_OBSOLETE;
 406                 }
 407         g_return_val_if_fail(file_IoStatusBlock.Information==num_bytes,GNOME_VFS_ERROR_GENERIC);
 408
 409         captive_file_slave_object->offset+=file_IoStatusBlock.Information;
 410         *bytes_written_return=file_IoStatusBlock.Information;
 411         captive_leave();
 412         return GNOME_VFS_OK;
 413 }
 414
 415
 416 GnomeVFSResult captive_file_slave_seek
 417                 (CaptiveFileObject *captive_file_object,GnomeVFSSeekPosition whence,GnomeVFSFileOffset offset)
 418 {
 419 CaptiveFileSlaveObject *captive_file_slave_object;
 420
 421         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 422
 423         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 424
 425         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 426
 427         switch (whence) {
 428                 case GNOME_VFS_SEEK_START:
 429                         captive_file_slave_object->offset=offset;
 430                         break;
 431                 case GNOME_VFS_SEEK_CURRENT:
 432                         if (0
 433                                         || (offset>0 && (captive_file_slave_object->offset+offset)<captive_file_slave_object->offset)
 434                                         || (offset<0 && (captive_file_slave_object->offset+offset)>captive_file_slave_object->offset))
 435                                 return GNOME_VFS_ERROR_BAD_PARAMETERS;
 436                         captive_file_slave_object->offset+=offset;
 437                         break;
 438                 case GNOME_VFS_SEEK_END:
 439                         g_assert_not_reached(); /* NOT IMPLEMENTED YET */
 440                         break;
 441                 default:
 442                         g_return_val_if_reached(GNOME_VFS_ERROR_BAD_PARAMETERS);
 443                 }
 444
 445         captive_leave();
 446         return GNOME_VFS_OK;
 447 }
 448
 449
 450 GnomeVFSResult captive_file_slave_tell(CaptiveFileObject *captive_file_object,GnomeVFSFileOffset *offset_return)
 451 {
 452 CaptiveFileSlaveObject *captive_file_slave_object;
 453
 454         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 455         g_return_val_if_fail(offset_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 456
 457         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 458
 459         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 460
 461         *offset_return=captive_file_slave_object->offset;
 462         captive_leave();
 463         return GNOME_VFS_OK;
 464 }
 465
 466
 467 GnomeVFSResult captive_file_slave_remove(CaptiveFileObject *captive_file_object)
 468 {
 469 CaptiveFileSlaveObject *captive_file_slave_object;
 470 NTSTATUS err;
 471 FILE_DISPOSITION_INFORMATION FileDispositionInformation_struct;
 472 IO_STATUS_BLOCK file_IoStatusBlock;
 473 GnomeVFSResult errvfsresult;
 474
 475         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 476
 477         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 478
 479         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 480
 481         FileDispositionInformation_struct.DoDeleteFile=TRUE;
 482
 483         err=NtSetInformationFile(
 484                         captive_file_slave_object->file_Handle, /* FileHandle */
 485                         &file_IoStatusBlock,    /* IoStatusBlock */
 486                         &FileDispositionInformation_struct,     /* FileInformation */
 487                         sizeof(FileDispositionInformation_struct),      /* Length */
 488                         FileDispositionInformation);    /* FileInformationClass */
 489         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 490                 return errvfsresult;
 491         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 492
 493         captive_leave();
 494         return GNOME_VFS_OK;
 495 }
 496
 497
 498 /* Use 'FileNameInformationStruct' identifier instead of the logical 'FileNameInformation'
 499  * to prevent override of enum member 'FileNameInformation'
 500  */
 501 static GnomeVFSResult FileNameInformationStruct_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 502                 FILE_NAME_INFORMATION *FileNameInformationStruct)
 503 {
 504 UNICODE_STRING FileName_UnicodeString;
 505
 506         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_GENERIC);
 507         g_return_val_if_fail(FileNameInformationStruct!=NULL,GNOME_VFS_ERROR_GENERIC);
 508
 509         FileName_UnicodeString.Length=FileNameInformationStruct->FileNameLength;
 510         FileName_UnicodeString.MaximumLength=FileNameInformationStruct->FileNameLength
 511                         +sizeof(*FileNameInformationStruct->FileName);  /* 0-terminator */
 512
 513 #if 0   /* 'IoStatusBlock->Information' is sometimes weird, do not check it */
 514         g_assert((gpointer)(((char *)FileNameInformationStruct->FileName)+FileName_UnicodeString.Length)
 515                         <=(gpointer)(((char *)FileAllInformationStruct)+IoStatusBlock->Information));
 516                                         /* ensure we fit below '->IoStatusBlock->Information' at least without the 0-terminator */
 517 #endif
 518
 519         FileNameInformationStruct->FileName[FileNameInformationStruct->FileNameLength
 520                         /sizeof(*FileNameInformationStruct->FileName)]=0;       /* 0-terminate it */
 521         FileName_UnicodeString.Buffer=FileNameInformationStruct->FileName;
 522         file_info->name=captive_UnicodeString_to_utf8_malloc(&FileName_UnicodeString);
 523         /* '->name' assumed for 'file_info->valid_fields' */
 524
 525         return GNOME_VFS_OK;
 526 }
 527
 528
 529 /* Use 'FileBasicInformationStruct' identifier instead of the logical 'FileBasicInformation'
 530  * to prevent override of enum member 'FileBasicInformation'
 531  */
 532 static GnomeVFSResult FileBasicInformationStruct_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 533                 FILE_BASIC_INFORMATION *FileBasicInformationStruct)
 534 {
 535 BOOLEAN errBOOLEAN;
 536 ULONG tmp_ULONG;
 537
 538         /* FIXME: What is 'FILE_ATTRIBUTE_NORMAL'? */
 539         switch (FileBasicInformationStruct->FileAttributes & (0
 540                         | FILE_ATTRIBUTE_DIRECTORY
 541                         | FILE_ATTRIBUTE_DEVICE)) {
 542                 case 0:                        file_info->type=GNOME_VFS_FILE_TYPE_REGULAR;   break;
 543                 case FILE_ATTRIBUTE_DIRECTORY: file_info->type=GNOME_VFS_FILE_TYPE_DIRECTORY; break;
 544                 case FILE_ATTRIBUTE_DEVICE:    file_info->type=GNOME_VFS_FILE_TYPE_SOCKET;
 545                         /* or GNOME_VFS_FILE_TYPE_CHARACTER_DEVICE or GNOME_VFS_FILE_TYPE_BLOCK_DEVICE ? */
 546                         break;
 547                 default:                       file_info->type=GNOME_VFS_FILE_TYPE_UNKNOWN;   break;
 548                 }
 549         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
 550
 551         /* we use 0600 for r/w files, 0400 for FILE_ATTRIBUTE_READONLY */
 552         file_info->permissions=GNOME_VFS_PERM_USER_READ;
 553         if (file_info->type==GNOME_VFS_FILE_TYPE_DIRECTORY)
 554                 file_info->permissions|=GNOME_VFS_PERM_USER_EXEC;
 555         if (!(FileBasicInformationStruct->FileAttributes & FILE_ATTRIBUTE_READONLY))
 556                 file_info->permissions|=GNOME_VFS_PERM_USER_WRITE;
 557         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS;
 558
 559         if (FileBasicInformationStruct->LastAccessTime.QuadPart) {      /* it may be 0 if not set */
 560                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileBasicInformationStruct->LastAccessTime,&tmp_ULONG);
 561                 g_assert(errBOOLEAN==TRUE);
 562                 file_info->atime=tmp_ULONG;
 563                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_ATIME;
 564                 }
 565
 566         /* it may be 0 if not set */
 567         if (FileBasicInformationStruct->LastWriteTime.QuadPart || FileBasicInformationStruct->ChangeTime.QuadPart) {
 568                 errBOOLEAN=RtlTimeToSecondsSince1970(
 569                                 /* take the more recent (==bigger) time: */
 570                                 (FileBasicInformationStruct->LastWriteTime.QuadPart > FileBasicInformationStruct->ChangeTime.QuadPart
 571                                                 ? &FileBasicInformationStruct->LastWriteTime : &FileBasicInformationStruct->ChangeTime),
 572                                 &tmp_ULONG);
 573                 g_assert(errBOOLEAN==TRUE);
 574                 file_info->mtime=tmp_ULONG;
 575                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_MTIME;
 576                 }
 577
 578         if (FileBasicInformationStruct->CreationTime.QuadPart) {        /* it may be 0 if not set */
 579                 errBOOLEAN=RtlTimeToSecondsSince1970(&FileBasicInformationStruct->CreationTime,&tmp_ULONG);
 580                 g_assert(errBOOLEAN==TRUE);
 581                 file_info->ctime=tmp_ULONG;
 582                 file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_CTIME;
 583                 }
 584
 585         return GNOME_VFS_OK;
 586 }
 587
 588
 589 /* Use 'FileStandardInformationStruct' identifier instead of the logical 'FileStandardInformation'
 590  * to prevent override of enum member 'FileStandardInformation'
 591  */
 592 static GnomeVFSResult FileStandardInformationStruct_to_GnomeVFSFileInfo(GnomeVFSFileInfo *file_info,
 593                 FILE_STANDARD_INFORMATION *FileStandardInformationStruct)
 594 {
 595         file_info->size=FileStandardInformationStruct->EndOfFile.QuadPart;
 596         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_SIZE;
 597
 598         file_info->block_count=FileStandardInformationStruct->AllocationSize.QuadPart/512;
 599         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_BLOCK_COUNT;
 600
 601         return GNOME_VFS_OK;
 602 }
 603
 604
 605 GnomeVFSResult captive_file_slave_file_info_get(CaptiveFileObject *captive_file_object,
 606                 GnomeVFSFileInfo *file_info)
 607 {
 608 CaptiveFileSlaveObject *captive_file_slave_object;
 609 NTSTATUS err;
 610 IO_STATUS_BLOCK file_IoStatusBlock;
 611 FILE_NAME_INFORMATION *FileNameInformationStruct;
 612 FILE_BASIC_INFORMATION *FileBasicInformationStruct;
 613 FILE_STANDARD_INFORMATION *FileStandardInformationStruct;
 614 GnomeVFSResult errvfsresult;
 615 char QueryFile_buf[sizeof(FILE_NAME_INFORMATION)
 616                 +0x1000 /* max 'FileName' length, 255 should be enough */ * sizeof(WCHAR /* *FILE_ALL_INFORMATION.NameInformation.FileName */ )];
 617
 618         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 619         g_return_val_if_fail(file_info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 620
 621         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 622
 623         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 624
 625         /* ntfs.sys of NT-5.1sp1 has *(FILE_BASIC_INFORMATION *)FILE_ALL_INFORMATION.BasicInformation
 626          * size 0x28 although reactos includes and all the information says 0x24.
 627          * fastfat.sys of NT-5.1sp1 also has the 'official' sizeof 0x24.
 628          * It would be a bit of heuristic to correctly detect its expected sizeof.
 629          */
 630
 631         file_info->valid_fields=0;
 632
 633         file_info->flags=GNOME_VFS_FILE_FLAGS_LOCAL;
 634         file_info->valid_fields|=GNOME_VFS_FILE_INFO_FIELDS_FLAGS;
 635
 636         /* query NameInformation */
 637         FileNameInformationStruct=(void *)QueryFile_buf;
 638         err=NtQueryInformationFile(
 639                         captive_file_slave_object->file_Handle, /* FileHandle */
 640                         &file_IoStatusBlock,    /* IoStatusBlock */
 641                         (gpointer)QueryFile_buf,        /* FileInformation */
 642                         sizeof(QueryFile_buf)   /* Length */
 643                                         -sizeof(*FileNameInformationStruct->FileName),  /* reserve space for a possible 0-terminator */
 644                         FileNameInformation);   /* FileInformationClass; =>FILE_NAME_INFORMATION */
 645         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 646                 return errvfsresult;
 647         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 648         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 649         errvfsresult=FileNameInformationStruct_to_GnomeVFSFileInfo(file_info,FileNameInformationStruct);
 650         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 651
 652         /* query BasicInformation */
 653         FileBasicInformationStruct=(void *)QueryFile_buf;
 654         err=NtQueryInformationFile(
 655                         captive_file_slave_object->file_Handle, /* FileHandle */
 656                         &file_IoStatusBlock,    /* IoStatusBlock */
 657                         (gpointer)QueryFile_buf,        /* FileInformation */
 658                         sizeof(QueryFile_buf),  /* Length */
 659                         FileBasicInformation);  /* FileInformationClass; =>FILE_BASIC_INFORMATION */
 660         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 661                 return errvfsresult;
 662         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 663         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 664         errvfsresult=FileBasicInformationStruct_to_GnomeVFSFileInfo(file_info,FileBasicInformationStruct);
 665         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 666
 667         /* query StandardInformation */
 668         FileStandardInformationStruct=(void *)QueryFile_buf;
 669         err=NtQueryInformationFile(
 670                         captive_file_slave_object->file_Handle, /* FileHandle */
 671                         &file_IoStatusBlock,    /* IoStatusBlock */
 672                         (gpointer)QueryFile_buf,        /* FileInformation */
 673                         sizeof(QueryFile_buf),  /* Length */
 674                         FileStandardInformation);       /* FileInformationClass; =>FILE_STANDARD_INFORMATION */
 675         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 676                 return errvfsresult;
 677         g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
 678         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 679         errvfsresult=FileStandardInformationStruct_to_GnomeVFSFileInfo(file_info,FileStandardInformationStruct);
 680         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 681
 682         captive_leave();
 683         return GNOME_VFS_OK;
 684 }
 685
 686
 687 GnomeVFSResult captive_file_slave_file_info_set(CaptiveFileObject *captive_file_object,
 688     const GnomeVFSFileInfo *info,GnomeVFSSetFileInfoMask mask)
 689 {
 690 CaptiveFileSlaveObject *captive_file_slave_object;
 691
 692         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 693         g_return_val_if_fail(info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 694
 695         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 696
 697         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 698
 699         if (mask & GNOME_VFS_SET_FILE_INFO_NAME) {
 700 gchar *name_dirname,*name_basename;
 701 UNICODE_STRING *name_UnicodeString;
 702 FILE_RENAME_INFORMATION *FileRenameInformation_structp;
 703 gsize FileRenameInformation_struct_len;
 704 IO_STATUS_BLOCK file_IoStatusBlock;
 705 NTSTATUS err=STATUS_SUCCESS;    /* Prevent: ... might be used uninitialized in this function */
 706 GnomeVFSResult errvfsresult;
 707
 708                 /* non-existing dirname assertion */
 709                 name_dirname=g_path_get_dirname(info->name);
 710                 if (*name_dirname) {
 711                         g_assert_not_reached();
 712                         errvfsresult=GNOME_VFS_ERROR_BAD_PARAMETERS;
 713                         goto err;
 714                         }
 715
 716                 /* fully-matching basename assertion */
 717                 name_basename=g_path_get_basename(info->name);
 718                 if (strcmp(name_basename,info->name)) {
 719                         g_assert_not_reached();
 720                         errvfsresult=GNOME_VFS_ERROR_BAD_PARAMETERS;
 721                         goto err_free_name_dirname;
 722                         }
 723
 724                 name_UnicodeString=captive_utf8_to_UnicodeString_alloca(info->name);
 725                 FileRenameInformation_struct_len=sizeof(*FileRenameInformation_structp)
 726                                 +name_UnicodeString->MaximumLength;     /* ==Length+(0-terminator); is the terminator needed? */
 727
 728                 FileRenameInformation_structp=g_alloca(FileRenameInformation_struct_len);
 729                 FileRenameInformation_structp->Replace=FALSE;
 730                 FileRenameInformation_structp->RootDir=NULL;    /* we do 'simple rename' here */
 731                 FileRenameInformation_structp->FileNameLength=name_UnicodeString->Length;
 732                 memcpy(FileRenameInformation_structp->FileName,name_UnicodeString->Buffer,
 733                                 name_UnicodeString->MaximumLength);     /* ==Length+(0-terminator); is the terminator needed? */
 734
 735                 err=NtSetInformationFile(
 736                                 captive_file_slave_object->file_Handle, /* FileHandle */
 737                                 &file_IoStatusBlock,    /* IoStatusBlock */
 738                                 FileRenameInformation_structp,  /* FileInformation */
 739                                 FileRenameInformation_struct_len,       /* Length */
 740                                 FileRenameInformation); /* FileInformationClass */
 741                 if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 742                         goto err_free_name_basename;
 743
 744 err_free_name_basename:
 745                 g_free(name_basename);
 746 err_free_name_dirname:
 747                 g_free(name_dirname);
 748 err:
 749
 750                 if (errvfsresult!=GNOME_VFS_OK)
 751                         return errvfsresult;
 752                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 753                 }
 754
 755         if (mask & (GNOME_VFS_SET_FILE_INFO_PERMISSIONS | GNOME_VFS_SET_FILE_INFO_TIME)) {
 756 char FileBasicInformation_buf[sizeof(FILE_BASIC_INFORMATION)+4];
 757 FILE_BASIC_INFORMATION *FileBasicInformationp=(FILE_BASIC_INFORMATION *)FileBasicInformation_buf;
 758 IO_STATUS_BLOCK file_IoStatusBlock;
 759 NTSTATUS err;
 760
 761                 /* FIXME: Everywhere is is the declaration with 4xLARGE_INTEGER+1xULONG==36 bytes
 762                  * but the precompiled ext2fsd.sys wants 40 bytes - why?
 763                  * The same case applies to ntfs.sys of NT-5.1sp1.
 764                  */
 765                 g_assert(sizeof(FILE_BASIC_INFORMATION)==36);
 766                 g_assert(sizeof(FileBasicInformation_buf)==40);
 767                 err=NtQueryInformationFile(
 768                                 captive_file_slave_object->file_Handle, /* FileHandle */
 769                                 &file_IoStatusBlock,    /* IoStatusBlock */
 770                                 FileBasicInformation_buf,       /* FileInformation */
 771                                 sizeof(FileBasicInformation_buf),       /* Length */
 772                                 FileBasicInformation);  /* FileInformationClass */
 773                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 774
 775                 if (mask & GNOME_VFS_SET_FILE_INFO_PERMISSIONS) {
 776                         FileBasicInformationp->FileAttributes&=~FILE_ATTRIBUTE_READONLY;
 777                         g_assert(info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS);
 778                         if (!(info->permissions&0200))
 779                                 FileBasicInformationp->FileAttributes|=FILE_ATTRIBUTE_READONLY;
 780                         }
 781
 782                 if (mask & GNOME_VFS_SET_FILE_INFO_TIME) {
 783                         g_assert(info->valid_fields & (0
 784                                         | GNOME_VFS_FILE_INFO_FIELDS_ATIME
 785                                         | GNOME_VFS_FILE_INFO_FIELDS_MTIME));
 786                         /* !GNOME_VFS_FILE_INFO_FIELDS_CTIME is used by FUSE op_utime(). */
 787                         if (info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_ATIME) {
 788                                 RtlSecondsSince1970ToTime(
 789                                                 info->atime,    /* SecondsSince1970 */
 790                                                 &FileBasicInformationp->LastAccessTime);        /* Time */
 791                                 }
 792                         if (info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_MTIME) {
 793                                 RtlSecondsSince1970ToTime(
 794                                                 info->mtime,    /* SecondsSince1970 */
 795                                                 &FileBasicInformationp->LastWriteTime); /* Time */
 796                                 FileBasicInformationp->ChangeTime=FileBasicInformationp->LastWriteTime;
 797                                 }
 798                         if (info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_CTIME) {
 799                                 RtlSecondsSince1970ToTime(
 800                                                 info->ctime,    /* SecondsSince1970 */
 801                                                 &FileBasicInformationp->CreationTime);  /* Time */
 802                                 }
 803                         }
 804
 805                 err=NtSetInformationFile(
 806                                 captive_file_slave_object->file_Handle, /* FileHandle */
 807                                 &file_IoStatusBlock,    /* IoStatusBlock */
 808                                 FileBasicInformation_buf,       /* FileInformation */
 809                                 sizeof(FileBasicInformation_buf),       /* Length */
 810                                 FileBasicInformation);  /* FileInformationClass */
 811                 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 812                 }
 813
 814         if (mask & GNOME_VFS_SET_FILE_INFO_OWNER) {
 815                 /* FIXME: g_assert(info->valid_fields & ???); */
 816                 /* owner ignored for W32 */
 817                 }
 818
 819         captive_leave();
 820         return GNOME_VFS_OK;
 821 }
 822
 823
 824 GnomeVFSResult captive_file_slave_truncate(CaptiveFileObject *captive_file_object,GnomeVFSFileSize file_size)
 825 {
 826 CaptiveFileSlaveObject *captive_file_slave_object;
 827 NTSTATUS err;
 828 FILE_END_OF_FILE_INFORMATION FileEndOfFileInformation_struct;
 829 IO_STATUS_BLOCK file_IoStatusBlock;
 830 GnomeVFSResult errvfsresult;
 831
 832         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 833
 834         captive_file_slave_object=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object);
 835
 836         g_return_val_if_fail(captive_file_slave_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 837
 838         FileEndOfFileInformation_struct.EndOfFile.QuadPart=file_size;
 839
 840         err=NtSetInformationFile(
 841                         captive_file_slave_object->file_Handle, /* FileHandle */
 842                         &file_IoStatusBlock,    /* IoStatusBlock */
 843                         &FileEndOfFileInformation_struct,       /* FileInformation */
 844                         sizeof(FileEndOfFileInformation_struct),        /* Length */
 845                         FileEndOfFileInformation);      /* FileInformationClass */
 846         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 847                 return errvfsresult;
 848         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 849
 850         captive_leave();
 851         return GNOME_VFS_OK;
 852 }
 853
 854
 855 GnomeVFSResult captive_file_slave_move
 856                 (CaptiveFileObject *captive_file_object_old,const gchar *pathname_new,gboolean force_replace)
 857 {
 858 CaptiveFileSlaveObject *captive_file_slave_object_old;
 859 NTSTATUS err;
 860 FILE_RENAME_INFORMATION *FileRenameInformation_structp;
 861 IO_STATUS_BLOCK file_IoStatusBlock;
 862 GnomeVFSResult errvfsresult;
 863 OBJECT_ATTRIBUTES pathname_new_ObjectAttributes;
 864
 865         g_return_val_if_fail(CAPTIVE_FILE_SLAVE_IS_OBJECT(captive_file_object_old),GNOME_VFS_ERROR_BAD_PARAMETERS);
 866         g_return_val_if_fail(pathname_new!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 867
 868         captive_file_slave_object_old=CAPTIVE_FILE_SLAVE_OBJECT(captive_file_object_old);
 869
 870         g_return_val_if_fail(captive_file_slave_object_old->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 871
 872         errvfsresult=captive_ObjectAttributes_init(pathname_new,&pathname_new_ObjectAttributes);
 873         g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
 874
 875         FileRenameInformation_structp=
 876                         g_alloca(sizeof(*FileRenameInformation_structp)+pathname_new_ObjectAttributes.ObjectName->MaximumLength);
 877         FileRenameInformation_structp->Replace=force_replace;
 878         FileRenameInformation_structp->RootDir=0;       /* AFAIK never set by orig W32 */
 879         FileRenameInformation_structp->FileNameLength=pathname_new_ObjectAttributes.ObjectName->Length;
 880         memcpy(FileRenameInformation_structp->FileName,pathname_new_ObjectAttributes.ObjectName->Buffer,
 881                         pathname_new_ObjectAttributes.ObjectName->MaximumLength);
 882
 883         err=NtSetInformationFile(
 884                         captive_file_slave_object_old->file_Handle,     /* FileHandle */
 885                         &file_IoStatusBlock,    /* IoStatusBlock */
 886                         FileRenameInformation_structp,  /* FileInformation */
 887                         sizeof(*FileRenameInformation_structp)+pathname_new_ObjectAttributes.ObjectName->MaximumLength, /* Length */
 888                         FileRenameInformation); /* FileInformationClass */
 889         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 890                 goto err_free_ObjectAttributes;
 891         g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
 892
 893         errvfsresult=GNOME_VFS_OK;
 894
 895 err_free_ObjectAttributes:
 896         g_free(pathname_new_ObjectAttributes.ObjectName);       /* left from captive_file_slave_uri_parent_init() */
 897
 898         captive_leave();
 899         return errvfsresult;
 900 }