src/libcaptive/client/vfs.c

   1 /* $Id$
   2  * captive vfs 'vfs' 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-vfs.h" /* self */
  23 #include "vfs.h"        /* self-priv */
  24 #include <glib/gmessages.h>
  25 #include "captive/macros.h"
  26 #include "init.h"
  27 #include "captive/parent-Vfs.h"
  28 #include "../sandbox/server-Vfs.h"      /* for captive_corba_child_options */
  29 #include "giochannel-blind.h"   /* for captive_giochannel_setup() */
  30 #include "directory.h"
  31 #include "reactos/ddk/iotypes.h"
  32 #include "captive/client-directory.h"
  33 #include "reactos/ntos/zw.h"    /* for NtQueryVolumeInformationFile() */
  34 #include "result.h"
  35
  36
  37 static gpointer captive_vfs_object_parent_class=NULL;
  38
  39
  40 static GnomeVFSResult captive_vfs_close(CaptiveVfsObject *captive_vfs_object);
  41
  42 static void captive_vfs_object_finalize(CaptiveVfsObject *captive_vfs_object)
  43 {
  44         g_return_if_fail(captive_vfs_object!=NULL);
  45
  46         captive_vfs_close(captive_vfs_object);  /* errors ignored */
  47
  48         G_OBJECT_CLASS(captive_vfs_object_parent_class)->finalize((GObject *)captive_vfs_object);
  49 }
  50
  51
  52 static void captive_vfs_object_class_init(CaptiveVfsObjectClass *class)
  53 {
  54 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
  55
  56         captive_vfs_object_parent_class=g_type_class_ref(G_TYPE_OBJECT);
  57         gobject_class->finalize=(void (*)(GObject *object))captive_vfs_object_finalize;
  58 }
  59
  60
  61 static void captive_vfs_object_init(CaptiveVfsObject *captive_vfs_object)
  62 {
  63         CAPTIVE_MEMZERO(&captive_vfs_object->options);
  64
  65         captive_vfs_object->corba_parent_giochanel_blind=NULL;
  66 }
  67
  68
  69 GType captive_vfs_object_get_type(void)
  70 {
  71 static GType captive_vfs_object_type=0;
  72
  73         if (!captive_vfs_object_type) {
  74 static const GTypeInfo captive_vfs_object_info={
  75                                 sizeof(CaptiveVfsObjectClass),
  76                                 NULL,   /* base_init */
  77                                 NULL,   /* base_finalize */
  78                                 (GClassInitFunc)captive_vfs_object_class_init,
  79                                 NULL,   /* class_finalize */
  80                                 NULL,   /* class_data */
  81                                 sizeof(CaptiveVfsObject),
  82                                 5,      /* n_preallocs */
  83                                 (GInstanceInitFunc)captive_vfs_object_init,
  84                                 };
  85
  86                 captive_vfs_object_type=g_type_register_static(G_TYPE_OBJECT,
  87                                 "CaptiveVfsObject",&captive_vfs_object_info,0);
  88                 }
  89
  90         return captive_vfs_object_type;
  91 }
  92
  93
  94 static void     log_discard_func(const gchar *log_domain,GLogLevelFlags log_level,const gchar *message,gpointer user_data)
  95 {
  96         /* NOP */
  97 }
  98
  99 GnomeVFSResult captive_vfs_new
 100                 (CaptiveVfsObject **captive_vfs_object_return,const struct captive_options *options)
 101 {
 102 CaptiveVfsObject *captive_vfs_object;
 103 gboolean errbool;
 104
 105         g_return_val_if_fail(captive_vfs_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 106         g_return_val_if_fail(options!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 107
 108         /* Here is the first initializaton point of parent in sandboxed mode. */
 109         if (!options->debug_messages) {
 110                 g_log_set_handler(
 111                                 G_LOG_DOMAIN,   /* log_domain; "Captive" */
 112                                 0       /* log_levels */
 113                                                 | G_LOG_FLAG_RECURSION
 114                                                 | G_LOG_FLAG_FATAL
 115                                                 /* The same mask is in:
 116                                                  * libcaptive/sandbox/server-GLogFunc.c
 117                                                  * libcaptive/client/init.c
 118                                                  * libcaptive/client/vfs.c
 119                                                  */
 120                                                 | G_LOG_LEVEL_MESSAGE
 121                                                 | G_LOG_LEVEL_INFO
 122                                                 | G_LOG_LEVEL_DEBUG,
 123                                 log_discard_func,       /* log_func */
 124                                 NULL);  /* user_data */
 125                 }
 126
 127         *captive_vfs_object_return=NULL;
 128
 129         captive_vfs_object=g_object_new(
 130                         CAPTIVE_VFS_TYPE_OBJECT,        /* object_type */
 131                         NULL);  /* first_property_name; FIXME: support properties */
 132
 133         captive_options_copy(&captive_vfs_object->options,options);
 134
 135         if (captive_vfs_object->options.image_iochannel)
 136                 captive_giochannel_setup(captive_vfs_object->options.image_iochannel);
 137
 138         *captive_vfs_object_return=captive_vfs_object;
 139
 140         /* We are sandboxing && we are the master */
 141         if (options->sandbox && (options->sandbox_server_argv || options->sandbox_server_ior))
 142                 return captive_sandbox_parent_vfs_new(captive_vfs_object);
 143
 144         g_assert(captive_options==NULL);
 145         captive_options=&captive_vfs_object->options;
 146
 147         errbool=captive_init();
 148         g_assert(errbool==TRUE);
 149
 150         return GNOME_VFS_OK;
 151 }
 152
 153
 154 static GnomeVFSResult captive_vfs_close(CaptiveVfsObject *captive_vfs_object)
 155 {
 156 gboolean errbool;
 157
 158         g_return_val_if_fail(captive_vfs_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 159
 160         if (captive_vfs_object->is_sandbox_parent)
 161                 return captive_sandbox_parent_vfs_close(captive_vfs_object);
 162
 163         g_assert(captive_options==&captive_vfs_object->options);
 164         errbool=captive_shutdown();
 165         g_assert(errbool==TRUE);
 166
 167         captive_options=NULL;
 168         captive_options_free(&captive_vfs_object->options);
 169
 170         return GNOME_VFS_OK;
 171 }
 172
 173
 174 GnomeVFSResult captive_vfs_commit(CaptiveVfsObject *captive_vfs_object)
 175 {
 176         g_return_val_if_fail(captive_vfs_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 177
 178         if (captive_vfs_object->is_sandbox_parent)
 179                 return captive_sandbox_parent_vfs_commit(captive_vfs_object);
 180
 181         /* We do not buffer any data if not in sandboxed mode. */
 182         return GNOME_VFS_OK;
 183 }
 184
 185
 186 GnomeVFSResult captive_vfs_volume_info_get(CaptiveVfsObject *captive_vfs_object,CaptiveVfsVolumeInfo *volume_info)
 187 {
 188 FILE_FS_FULL_SIZE_INFORMATION FileFsFullSizeInformation_local;
 189 NTSTATUS err;
 190 IO_STATUS_BLOCK volume_IoStatusBlock;
 191 GnomeVFSResult errvfsresult;
 192 CaptiveDirectoryObject *captive_directory_object;
 193
 194         g_return_val_if_fail(captive_vfs_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 195         g_return_val_if_fail(volume_info!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 196
 197         if (captive_vfs_object->is_sandbox_parent)
 198                 return captive_sandbox_parent_vfs_volume_info_get(captive_vfs_object,volume_info);
 199
 200         if (GNOME_VFS_OK!=(errvfsresult=captive_directory_new_open(&captive_directory_object,captive_vfs_object,"/")))
 201                 return errvfsresult;
 202
 203         err=NtQueryVolumeInformationFile(
 204                         captive_directory_object->dir_Handle,   /* FileHandle */
 205                         &volume_IoStatusBlock,  /* IoStatusBlock */
 206                         &FileFsFullSizeInformation_local,       /* FsInformation */
 207                         sizeof(FileFsFullSizeInformation_local),        /* Length */
 208                         FileFsFullSizeInformation);     /* FsInformationClass */
 209         if (NT_SUCCESS(err)!=NT_SUCCESS(volume_IoStatusBlock.Status)) {
 210                 g_assert_not_reached();
 211                 goto err_unref_captive_directory_object;
 212                 }
 213         if (GNOME_VFS_OK!=(errvfsresult=captive_NTSTATUS_to_GnomeVFSResult(err)))
 214                 goto err_unref_captive_directory_object;
 215
 216         g_object_unref(captive_directory_object);
 217
 218         volume_info->block_size=FileFsFullSizeInformation_local.BytesPerSector
 219                         *FileFsFullSizeInformation_local.SectorsPerAllocationUnit;
 220         volume_info->bytes          =FileFsFullSizeInformation_local.TotalAllocationUnits.QuadPart          *volume_info->block_size;
 221         volume_info->bytes_free     =FileFsFullSizeInformation_local.ActualAvailableAllocationUnits.QuadPart*volume_info->block_size;
 222         volume_info->bytes_available=FileFsFullSizeInformation_local.CallerAvailableAllocationUnits.QuadPart*volume_info->block_size;
 223
 224         return GNOME_VFS_OK;
 225
 226 err_unref_captive_directory_object:
 227         g_object_unref(captive_directory_object);
 228         return errvfsresult;
 229 }