libgnomevfs2-mythtv/modules/mythtv-method.c
author rosfran
Wed May 23 16:29:42 2007 +0100 (2007-05-23)
branchtrunk
changeset 699 3710052a05c9
parent 619 fd06870216b8
child 747 7eeaef26704c
permissions -rwxr-xr-x
[svn r705] Solved bug with GObject incompatibility.
     1 /*
     2  * @author Hallyson Melo <hallyson.melo@indt.org.br>
     3  *
     4  * This program is free software; you can redistribute it and/or modify
     5  * it under the terms of the GNU Lesser General Public License as published by
     6  * the Free Software Foundation; either version 2 of the License, or
     7  * (at your option) any later version.
     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 Lesser 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 #ifdef HAVE_CONFIG_H
    20 #include <config.h>
    21 #endif
    22 
    23 #include <string.h>
    24 #include <glib.h>
    25 #include <glib/gprintf.h>
    26 #include <glib/gstdio.h>
    27 #include <math.h>
    28 
    29 #include <libgnomevfs/gnome-vfs-module.h>
    30 #include <libgnomevfs/gnome-vfs-utils.h>
    31 
    32 #include <gmyth/gmyth_file.h>
    33 #include <gmyth/gmyth_file_transfer.h>
    34 #include <gmyth/gmyth_file_local.h>
    35 #include <gmyth/gmyth_livetv.h>
    36 #include <gmyth/gmyth_uri.h>
    37 #include <gmyth/gmyth_recorder.h>
    38 #include <gmyth/gmyth_backendinfo.h>
    39 #include <gmyth/gmyth_util.h>
    40 #include <gmyth/gmyth_remote_util.h>
    41 #include <gmyth/gmyth_tvchain.h>
    42 #include <gmyth/gmyth_programinfo.h>
    43 
    44 #define GST_MYTHTV_ID_NUM               1
    45 #define MYTHTV_VERSION_DEFAULT          30
    46 #define MYTHTV_TRANSFER_MAX_WAITS       100
    47 
    48 /* internal GnomeVFS plug-in buffer size ( 120 Kbytes ) */
    49 #define MYTHTV_BUFFER_SIZE                          80*1024
    50 /* internally sized GnomeVFS plug-in buffer ( 4 Kbytes ) */
    51 #define MYTHTV_MAX_VFS_BUFFER_SIZE                  4096
    52 /* maximum number of bytes to be requested to the MythTV backend ( 64 Kbytes ) */
    53 #define MYTHTV_MAX_REQUEST_SIZE                     64*1024
    54 
    55 typedef struct {
    56 	GMythFile *file;
    57 	GMythLiveTV *livetv;
    58     GMythBackendInfo *backend_info;
    59     GMythURI *gmyth_uri;
    60     GMythRecorder *live_recorder;
    61     gboolean started;
    62     gint64 offset;
    63     
    64     gboolean is_livetv; /* it is, or not a Live TV content transfer */
    65     gboolean is_local_file; /* tell if the file is local to the current content transfer */
    66 
    67 	gchar *channel_name;
    68 
    69 	gint mythtv_version;
    70 	gboolean configured;
    71 } MythtvHandle;
    72 
    73 
    74 static GnomeVFSResult do_read (GnomeVFSMethod * method,
    75 			       GnomeVFSMethodHandle * method_handle,
    76 			       gpointer buffer,
    77 			       GnomeVFSFileSize num_bytes,
    78 			       GnomeVFSFileSize * bytes_read,
    79 			       GnomeVFSContext * context);
    80 
    81 static GnomeVFSResult   myth_connection_start   (MythtvHandle * method_handle);
    82 static void             myth_destroy_handle     (MythtvHandle * method_handle);
    83 static GnomeVFSResult   myth_handle_new         (GnomeVFSURI * uri,
    84                                                  MythtvHandle ** method_handle);
    85 static GnomeVFSResult   myth_get_file_info      (MythtvHandle * myth_handle,
    86                                                  GnomeVFSURI * uri,
    87                                                  GnomeVFSFileInfo * info);
    88 
    89 static GnomeVFSResult 
    90 myth_handle_new (GnomeVFSURI * uri,
    91                  MythtvHandle ** method_handle)
    92 {   
    93     gchar *tmp_str1;
    94     gchar *tmp_str2;
    95 
    96     _GNOME_VFS_METHOD_PARAM_CHECK (*method_handle == NULL);
    97     
    98 	if (gnome_vfs_uri_get_host_name (uri) == NULL) {
    99 		return GNOME_VFS_ERROR_INVALID_HOST_NAME;
   100 	}
   101 
   102     *method_handle = g_new0 (MythtvHandle, 1);
   103     (*method_handle)->mythtv_version = MYTHTV_VERSION_DEFAULT;
   104     
   105     (*method_handle)->is_livetv = FALSE;
   106     (*method_handle)->is_local_file = FALSE;
   107         
   108     tmp_str1 = gnome_vfs_uri_to_string (uri, GNOME_VFS_URI_HIDE_NONE);
   109     tmp_str2 = gnome_vfs_unescape_string (tmp_str1, "");
   110 
   111     gchar *tmp_str3 = strstr (tmp_str2, ".nuv.avi");
   112     if (tmp_str3 != NULL) {
   113         tmp_str3[4] = '\0';
   114     }
   115 
   116     (*method_handle)->backend_info = gmyth_backend_info_new_with_uri (tmp_str2);
   117     (*method_handle)->gmyth_uri = gmyth_uri_new_with_value (tmp_str2);
   118     g_free (tmp_str1);
   119     g_free (tmp_str2);
   120 
   121     return GNOME_VFS_OK;
   122 }   
   123 
   124 static void
   125 myth_destroy_handle (MythtvHandle * method_handle)
   126 {
   127     //TODO: abort if in tranfer state
   128     
   129     if (method_handle->backend_info != NULL) {
   130         g_object_unref (method_handle->backend_info);
   131         method_handle->backend_info = NULL;
   132     }
   133     
   134     if (method_handle->channel_name != NULL) {
   135         g_free (method_handle->channel_name);
   136         method_handle->channel_name = NULL;
   137     }
   138 
   139     if (method_handle->livetv != NULL) {
   140         g_object_unref (method_handle->livetv);
   141         method_handle->livetv = NULL;
   142     }
   143 
   144     if (method_handle->file != NULL) {
   145         g_object_unref (method_handle->file);
   146         method_handle->file = NULL;
   147     }
   148 
   149     if (method_handle->gmyth_uri != NULL) {
   150         g_object_unref (method_handle->gmyth_uri);
   151         method_handle->gmyth_uri = NULL;
   152     }
   153 
   154     g_free (method_handle);
   155 }
   156 
   157 static GnomeVFSResult
   158 myth_get_file_info (MythtvHandle * myth_handle,
   159                     GnomeVFSURI * uri,
   160                     GnomeVFSFileInfo * info)
   161 {
   162     GMythURI *gmyth_uri;
   163     GMythBackendInfo *backend_info;
   164     gboolean is_livetv;
   165     gboolean is_local;
   166     
   167     _GNOME_VFS_METHOD_PARAM_CHECK (info != NULL);
   168     
   169 g_debug ("%s - %d", __FUNCTION__, __LINE__);
   170 
   171     if (myth_handle == NULL) {
   172         gchar *tmp_str1;
   173         gchar *tmp_str2;
   174         
   175         tmp_str1 = gnome_vfs_uri_to_string (uri, GNOME_VFS_URI_HIDE_NONE);
   176         tmp_str2 = gnome_vfs_unescape_string (tmp_str1, "");
   177 
   178         backend_info = gmyth_backend_info_new_with_uri (tmp_str2);
   179         gmyth_uri = gmyth_uri_new_with_value (tmp_str2);
   180         
   181         g_free (tmp_str1);
   182         g_free (tmp_str2);
   183     } else {
   184         backend_info = g_object_ref (myth_handle->backend_info);
   185         gmyth_uri = g_object_ref (myth_handle->gmyth_uri);
   186     }
   187 
   188     info->valid_fields = 0;
   189 	info->valid_fields = GNOME_VFS_FILE_INFO_FIELDS_TYPE | 
   190         GNOME_VFS_FILE_INFO_FIELDS_MIME_TYPE | 
   191         GNOME_VFS_FILE_INFO_FIELDS_PERMISSIONS;
   192     
   193 	info->type = GNOME_VFS_FILE_TYPE_REGULAR;
   194     
   195 	/* fixme: get from file extension? */
   196 	info->mime_type = g_strdup ("video/x-nuv");
   197 	info->permissions = GNOME_VFS_PERM_USER_READ | 
   198         GNOME_VFS_PERM_OTHER_READ | 
   199         GNOME_VFS_PERM_GROUP_READ;
   200    
   201 	info->name = g_strdup (gmyth_uri_get_path (gmyth_uri));
   202     
   203     /* file size for remote files */
   204     is_livetv = gmyth_uri_is_livetv (gmyth_uri);
   205     
   206     if (is_livetv == FALSE) {
   207         GMythFile *file = NULL;
   208         gboolean ret = FALSE;
   209 
   210         /* Verifies if the file exists */
   211         if (!gmyth_util_file_exists (backend_info, 
   212                     gmyth_uri_get_path (gmyth_uri))) {
   213             g_object_unref (file);
   214             g_object_unref (backend_info);
   215             g_debug ("NOT FOUND %s/%d", __FUNCTION__, __LINE__);
   216             return GNOME_VFS_ERROR_NOT_FOUND;
   217 		}
   218 
   219         is_local = gmyth_uri_is_local_file (gmyth_uri);
   220         if (is_local == TRUE ) {
   221           file = GMYTH_FILE (gmyth_file_local_new(backend_info));
   222           ret = gmyth_file_local_open (GMYTH_FILE_LOCAL (file));
   223         } else {
   224           file = GMYTH_FILE (gmyth_file_transfer_new(backend_info));
   225           ret = gmyth_file_transfer_open (GMYTH_FILE_TRANSFER(file), 
   226                           gmyth_uri_get_path (gmyth_uri));
   227         }
   228         
   229         if (!ret) {
   230             g_object_unref (file);
   231             g_object_unref (backend_info);
   232             g_debug ("NOT FOUND %s/%d", __FUNCTION__, __LINE__);
   233             return GNOME_VFS_ERROR_NOT_FOUND;
   234         }
   235         
   236 		info->size = gmyth_file_get_filesize (file);
   237         info->valid_fields |= GNOME_VFS_FILE_INFO_FIELDS_SIZE;
   238 		g_object_unref (file);
   239 	}
   240 
   241     g_object_unref (backend_info);
   242     g_object_unref (gmyth_uri);
   243     
   244     return GNOME_VFS_OK;
   245 }
   246 
   247 static GnomeVFSResult
   248 myth_connection_start (MythtvHandle * method_handle)
   249 {
   250     GnomeVFSResult result = GNOME_VFS_OK;
   251 
   252     _GNOME_VFS_METHOD_PARAM_CHECK (method_handle != NULL);
   253     _GNOME_VFS_METHOD_PARAM_CHECK (method_handle->backend_info != NULL);
   254 
   255 	/* Connect to the backend */
   256 	if ( ( method_handle->is_livetv = gmyth_uri_is_livetv (method_handle->gmyth_uri) ) == TRUE) {
   257 		method_handle->livetv = gmyth_livetv_new (method_handle->backend_info);
   258 		method_handle->channel_name = gmyth_uri_get_channel_name (method_handle->gmyth_uri);
   259         
   260 		if (method_handle->channel_name != NULL) {
   261 		    if (gmyth_livetv_channel_name_setup (method_handle->livetv, 
   262                     method_handle->channel_name) == FALSE) {
   263                 result = GNOME_VFS_ERROR_INVALID_URI;
   264     			goto error;
   265 			}
   266 		} else if (gmyth_livetv_setup (method_handle->livetv) == FALSE) {
   267                 result = GNOME_VFS_ERROR_INVALID_URI;
   268                 goto error;
   269 		}
   270         
   271 
   272     	method_handle->file = 
   273             GMYTH_FILE( gmyth_livetv_create_file_transfer (method_handle->livetv) );
   274 
   275         if (method_handle->file == NULL) {
   276             result = GNOME_VFS_ERROR_INVALID_URI;
   277     		g_debug ("MythTV FileTransfer is NULL!\n");
   278             goto error;
   279         }
   280 
   281 	    if (!gmyth_file_transfer_open ( GMYTH_FILE_TRANSFER(method_handle->file),
   282                                         method_handle->livetv->uri != NULL ? 
   283                                         gmyth_uri_get_path (method_handle->livetv->uri) :
   284                                         method_handle->livetv->proginfo->pathname->str)) {
   285         
   286             g_debug ("Couldn't open MythTV FileTransfer is NULL!\n");
   287             result = GNOME_VFS_ERROR_NOT_OPEN;
   288             goto error;
   289         }
   290     }
   291     else {
   292         gboolean ret = TRUE;
   293 		/* Verifies if the file exists */
   294 		if (!gmyth_util_file_exists (method_handle->backend_info, 
   295                     gmyth_uri_get_path (method_handle->gmyth_uri))) {
   296 
   297             g_debug ("NOT FOUND %s/%d", __FUNCTION__, __LINE__);
   298             goto error;
   299 		}
   300         
   301         if ( ( method_handle->is_local_file = gmyth_uri_is_local_file(method_handle->gmyth_uri) ) == TRUE )
   302         {
   303           method_handle->file = GMYTH_FILE( gmyth_file_local_new(method_handle->backend_info) );
   304           ret = gmyth_file_local_open ( GMYTH_FILE_LOCAL( method_handle->file ) );
   305         } else {
   306           method_handle->file = GMYTH_FILE( gmyth_file_transfer_new(method_handle->backend_info) );
   307           ret = gmyth_file_transfer_open ( GMYTH_FILE_TRANSFER(method_handle->file), 
   308                   gmyth_uri_get_path (method_handle->gmyth_uri));
   309         }
   310 
   311 		/* sets the Playback monitor connection */
   312 		if (!ret) {
   313 
   314             g_debug ("NOT FOUND %s/%d", __FUNCTION__, __LINE__);
   315 		    result = GNOME_VFS_ERROR_NOT_FOUND;
   316             goto error;
   317         }
   318 	} /* if - LiveTV or not? */
   319 
   320 	method_handle->configured = TRUE;    
   321 
   322     if (method_handle->file == NULL) {
   323         result = GNOME_VFS_ERROR_NOT_OPEN;
   324     }
   325 
   326 error:
   327     
   328     return result; 
   329 }
   330 
   331 static GnomeVFSResult
   332 do_open (GnomeVFSMethod * method,
   333 	 GnomeVFSMethodHandle ** method_handle,
   334 	 GnomeVFSURI * uri,
   335 	 GnomeVFSOpenMode mode, GnomeVFSContext * context)
   336 {
   337 	MythtvHandle *myth_handle = NULL;
   338     GnomeVFSResult result = GNOME_VFS_OK;
   339 
   340 	_GNOME_VFS_METHOD_PARAM_CHECK (method_handle != NULL);
   341 	_GNOME_VFS_METHOD_PARAM_CHECK (uri != NULL);
   342 
   343 	if (mode & GNOME_VFS_OPEN_WRITE) {
   344 		return GNOME_VFS_ERROR_INVALID_OPEN_MODE;
   345 	}
   346 
   347     result = myth_handle_new (uri, &myth_handle);
   348     if (result != GNOME_VFS_OK) 
   349         return result;
   350 
   351     result = myth_connection_start (myth_handle);
   352     if (result != GNOME_VFS_OK) {
   353         myth_destroy_handle (myth_handle);
   354         myth_handle = NULL;
   355         return result;
   356     }
   357 
   358     *method_handle = (GnomeVFSMethodHandle *) myth_handle;
   359     
   360     return result;
   361 }
   362 
   363 static GnomeVFSResult
   364 do_create (GnomeVFSMethod	 *method,
   365 	   GnomeVFSMethodHandle **method_handle,
   366 	   GnomeVFSURI 		 *uri,
   367 	   GnomeVFSOpenMode 	  mode,
   368 	   gboolean 		  exclusive,
   369 	   guint 		  perm,
   370 	   GnomeVFSContext 	 *context)
   371 {
   372     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   373 }
   374 
   375 static GnomeVFSResult
   376 do_close (GnomeVFSMethod * method,
   377         GnomeVFSMethodHandle * method_handle, 
   378         GnomeVFSContext * context)
   379 {
   380 	MythtvHandle *myth_handle = (MythtvHandle *) method_handle;
   381 
   382     myth_destroy_handle (myth_handle);
   383     
   384 	return GNOME_VFS_OK;
   385 }
   386 
   387 
   388 static GnomeVFSResult
   389 do_read (GnomeVFSMethod * method,
   390 	 GnomeVFSMethodHandle * method_handle,
   391 	 gpointer buffer,
   392 	 GnomeVFSFileSize num_bytes,
   393 	 GnomeVFSFileSize * bytes_read, 
   394          GnomeVFSContext * context)
   395 {
   396     GnomeVFSResult retval = GNOME_VFS_OK;
   397     MythtvHandle *myth_handle;
   398     GMythFileReadResult result;
   399     GByteArray *myth_buffer = g_byte_array_new ();
   400 
   401     _GNOME_VFS_METHOD_PARAM_CHECK (method_handle != NULL);
   402 
   403     myth_handle = (MythtvHandle *) method_handle;
   404     if ( myth_handle->is_local_file )
   405         result = gmyth_file_local_read ( GMYTH_FILE_LOCAL(myth_handle->file),
   406                                        myth_buffer,
   407                                        num_bytes, myth_handle->is_livetv );
   408     else
   409         result = gmyth_file_transfer_read ( GMYTH_FILE_TRANSFER(myth_handle->file),
   410                               		   myth_buffer,
   411                              		   num_bytes, myth_handle->is_livetv );
   412 
   413     if (result == GMYTH_FILE_READ_ERROR) {
   414         retval = GNOME_VFS_ERROR_IO;
   415     }
   416 
   417     if (result == GMYTH_FILE_READ_EOF) {
   418         retval = GNOME_VFS_ERROR_EOF;
   419     }
   420 
   421     if (myth_buffer->len > 0) {
   422 	    g_memmove (buffer, myth_buffer->data, myth_buffer->len);
   423         *bytes_read = (GnomeVFSFileSize) myth_buffer->len;
   424         myth_handle->offset += myth_buffer->len;
   425         g_byte_array_free (myth_buffer, TRUE);
   426     } 
   427 
   428 	return retval;
   429 }
   430 
   431 static GnomeVFSResult
   432 do_write (GnomeVFSMethod 	*method,
   433 	  GnomeVFSMethodHandle  *method_handle,
   434 	  gconstpointer 	 buffer,
   435 	  GnomeVFSFileSize 	 num_bytes,
   436 	  GnomeVFSFileSize 	*bytes_written,
   437 	  GnomeVFSContext 	*context)
   438 {
   439     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   440 }
   441 
   442 static GnomeVFSResult
   443 do_seek (GnomeVFSMethod	      *method,
   444 	 GnomeVFSMethodHandle *method_handle,
   445 	 GnomeVFSSeekPosition  whence,
   446 	 GnomeVFSFileOffset    offset,
   447 	 GnomeVFSContext      *context)
   448 {
   449 	MythtvHandle *myth_handle;
   450     //guint64 whence_p = 0;
   451     //gint64 new_offset =0;
   452 
   453      _GNOME_VFS_METHOD_PARAM_CHECK (method_handle != NULL);
   454 
   455      myth_handle = (MythtvHandle *) method_handle;    
   456     
   457     g_debug ("seek offset%"G_GINT64_FORMAT" whence %d", offset, whence);
   458 
   459     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   460     /*
   461     if (gmyth_uri_is_livetv (myth_handle->gmyth_uri))
   462     
   463     switch (whence)
   464     {
   465         case GNOME_VFS_SEEK_START:
   466             whence_p = 0;
   467             break;
   468         case GNOME_VFS_SEEK_CURRENT:
   469             whence_p = myth_handle->offset;
   470             break;
   471         case GNOME_VFS_SEEK_END:
   472             return GNOME_VFS_ERROR_NOT_SUPPORTED;
   473     }
   474     
   475     new_offset = gmyth_file_transfer_seek (myth_handle->file, offset, whence_p);
   476     if (new_offset != 0) {
   477         myth_handle->offset = new_offset;
   478         return GNOME_VFS_OK;
   479     }
   480 
   481     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   482     */
   483 }
   484 
   485 static GnomeVFSResult
   486 do_tell (GnomeVFSMethod       *method,
   487 	 GnomeVFSMethodHandle *method_handle,
   488 	 GnomeVFSFileSize   *offset_return)
   489 {
   490 	MythtvHandle *myth_handle = NULL;
   491     
   492      _GNOME_VFS_METHOD_PARAM_CHECK (method_handle != NULL);
   493      
   494     myth_handle = (MythtvHandle *) method_handle;
   495     *offset_return = myth_handle->offset;
   496 
   497     return GNOME_VFS_OK;
   498 }
   499 
   500 static GnomeVFSResult
   501 do_truncate_handle (GnomeVFSMethod *method,
   502 		    GnomeVFSMethodHandle *method_handle,
   503 		    GnomeVFSFileSize where,
   504 		    GnomeVFSContext *context)
   505 {
   506     return GNOME_VFS_ERROR_READ_ONLY;
   507 }
   508 
   509 static GnomeVFSResult
   510 do_open_directory (GnomeVFSMethod 	    *method,
   511 		   GnomeVFSMethodHandle    **method_handle,
   512 		   GnomeVFSURI 		    *uri,
   513 		   GnomeVFSFileInfoOptions   options,
   514 		   GnomeVFSContext 	    *context) 
   515 {
   516     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   517 }
   518 
   519 static GnomeVFSResult
   520 do_close_directory (GnomeVFSMethod 	 *method,
   521 		    GnomeVFSMethodHandle *method_handle,
   522 		    GnomeVFSContext 	 *context) 
   523 {
   524     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   525 }
   526 
   527 static GnomeVFSResult
   528 do_read_directory (GnomeVFSMethod 	*method,
   529        		   GnomeVFSMethodHandle *method_handle,
   530        		   GnomeVFSFileInfo 	*file_info,
   531 		   GnomeVFSContext 	*context)
   532 {
   533     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   534 }
   535 
   536 
   537 static GnomeVFSResult
   538 do_get_file_info (GnomeVFSMethod * method,
   539 		  GnomeVFSURI * uri,
   540 		  GnomeVFSFileInfo * file_info,
   541 		  GnomeVFSFileInfoOptions options,
   542 		  GnomeVFSContext * context)
   543 {
   544     return myth_get_file_info (NULL, uri, file_info);
   545 }
   546 
   547 static GnomeVFSResult
   548 do_get_file_info_from_handle (GnomeVFSMethod 		*method,
   549             			      GnomeVFSMethodHandle 	*method_handle,
   550 			                  GnomeVFSFileInfo 		*file_info,
   551             			      GnomeVFSFileInfoOptions    options,
   552 			                  GnomeVFSContext 		*context)
   553 {
   554 	MythtvHandle *myth_handle = (MythtvHandle *) method_handle;
   555 
   556     return myth_get_file_info (myth_handle, NULL, file_info);
   557 }
   558 
   559 static gboolean
   560 do_is_local (GnomeVFSMethod * method, const GnomeVFSURI * uri)
   561 {
   562 	return FALSE;
   563 }
   564 
   565 static GnomeVFSResult
   566 do_make_directory (GnomeVFSMethod  *method, 
   567 		            GnomeVFSURI     *uri,
   568                     guint 	    perm, 
   569 		            GnomeVFSContext *context) 
   570 {
   571     return GNOME_VFS_ERROR_READ_ONLY;
   572 }
   573 
   574 static GnomeVFSResult 
   575 do_remove_directory (GnomeVFSMethod  *method, 
   576 		             GnomeVFSURI     *uri, 
   577 		             GnomeVFSContext *context) 
   578 {
   579     return GNOME_VFS_ERROR_READ_ONLY;
   580 }
   581 
   582 static GnomeVFSResult
   583 do_move (GnomeVFSMethod  *method,
   584 	 GnomeVFSURI 	 *old_uri,
   585 	 GnomeVFSURI 	 *new_uri,
   586 	 gboolean         force_replace,
   587 	 GnomeVFSContext *context)
   588 {
   589     return GNOME_VFS_ERROR_READ_ONLY;
   590 }
   591 
   592 static GnomeVFSResult 
   593 do_unlink (GnomeVFSMethod  *method,
   594 	   GnomeVFSURI 	   *uri,
   595 	   GnomeVFSContext *context)
   596 {
   597     return GNOME_VFS_ERROR_READ_ONLY;
   598 }
   599 
   600 static GnomeVFSResult 
   601 do_check_same_fs (GnomeVFSMethod  *method,
   602 		  GnomeVFSURI 	  *a,
   603 		  GnomeVFSURI 	  *b,
   604 		  gboolean 	  *same_fs_return,
   605 		  GnomeVFSContext *context)
   606 {
   607     return GNOME_VFS_ERROR_NOT_SUPPORTED;
   608 }
   609 
   610 static GnomeVFSResult
   611 do_set_file_info (GnomeVFSMethod 		*method,
   612 		  GnomeVFSURI 			*uri,
   613 		  const GnomeVFSFileInfo 	*info,
   614 		  GnomeVFSSetFileInfoMask 	 mask,
   615 		  GnomeVFSContext 		*context)
   616 {
   617     return GNOME_VFS_ERROR_READ_ONLY;
   618 }
   619 
   620 static GnomeVFSResult
   621 do_truncate (GnomeVFSMethod *method,
   622 	     GnomeVFSURI *uri,
   623 	     GnomeVFSFileSize where,
   624 	     GnomeVFSContext *context)
   625 {
   626     return GNOME_VFS_ERROR_READ_ONLY;
   627 }
   628 
   629 static GnomeVFSResult
   630 do_find_directory (GnomeVFSMethod *method,
   631 		   GnomeVFSURI *near_uri,
   632 		   GnomeVFSFindDirectoryKind kind,
   633 		   GnomeVFSURI **result_uri,
   634 		   gboolean create_if_needed,
   635 		   gboolean find_if_needed,
   636 		   guint permissions,
   637 		   GnomeVFSContext *context)
   638 {
   639 	return GNOME_VFS_ERROR_NOT_SUPPORTED;
   640 }
   641 
   642 static GnomeVFSResult
   643 do_create_symbolic_link (GnomeVFSMethod *method,
   644 			 GnomeVFSURI *uri,
   645 			 const char *target_reference,
   646 			 GnomeVFSContext *context)
   647 {
   648     return GNOME_VFS_ERROR_READ_ONLY;
   649 }
   650 
   651 static GnomeVFSResult
   652 do_monitor_add (GnomeVFSMethod *method,
   653 		GnomeVFSMethodHandle **method_handle_return,
   654 		GnomeVFSURI *uri,
   655 		GnomeVFSMonitorType monitor_type)
   656 {
   657 	return GNOME_VFS_ERROR_NOT_SUPPORTED;
   658 }
   659 
   660 static GnomeVFSResult
   661 do_monitor_cancel (GnomeVFSMethod *method,
   662 		   GnomeVFSMethodHandle *method_handle)
   663 {
   664 	return GNOME_VFS_ERROR_NOT_SUPPORTED;
   665 }
   666 
   667 static GnomeVFSResult
   668 do_file_control (GnomeVFSMethod *method,
   669 		 GnomeVFSMethodHandle *method_handle,
   670 		 const char *operation,
   671 		 gpointer operation_data,
   672 		 GnomeVFSContext *context)
   673 {
   674 	return GNOME_VFS_ERROR_NOT_SUPPORTED;
   675 }
   676 
   677 static GnomeVFSMethod method = {
   678 	sizeof (GnomeVFSMethod),
   679 	do_open, 
   680 	do_create,
   681 	do_close,
   682 	do_read, 
   683 	do_write,
   684 	do_seek,
   685 	do_tell,
   686 	do_truncate_handle, 
   687 	do_open_directory,
   688 	do_close_directory,
   689 	do_read_directory,
   690 	do_get_file_info,
   691 	do_get_file_info_from_handle,
   692 	do_is_local, 
   693 	do_make_directory, 
   694 	do_remove_directory,
   695 	do_move,
   696 	do_unlink,
   697 	do_check_same_fs,
   698 	do_set_file_info,
   699 	do_truncate, 
   700 	do_find_directory, 
   701 	do_create_symbolic_link,  
   702 	do_monitor_add,  
   703 	do_monitor_cancel,  
   704 	do_file_control 	
   705 };
   706 
   707 
   708 GnomeVFSMethod *
   709 vfs_module_init (const char *method_name, const char *args)
   710 {
   711 	return &method;
   712 }
   713 
   714 void
   715 vfs_module_shutdown (GnomeVFSMethod * method)
   716 {
   717 }