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