server/directory.c

   1 /*
   2  * Server-side directory object management
   3  *
   4  * Copyright (C) 2005 Vitaliy Margolen
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  */
  21
  22 #include "config.h"
  23
  24 #include <assert.h>
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <sys/types.h>
  29
  30 #include "ntstatus.h"
  31 #define WIN32_NO_STATUS
  32 #include "winternl.h"
  33 #include "ddk/wdm.h"
  34
  35 #include "handle.h"
  36 #include "request.h"
  37 #include "process.h"
  38 #include "file.h"
  39 #include "unicode.h"
  40
  41 #define HASH_SIZE 7  /* default hash size */
  42
  43 static const WCHAR objtype_name[] = {'T','y','p','e'};
  44
  45 struct type_descr objtype_type =
  46 {
  47     { objtype_name, sizeof(objtype_name) },        /* name */
  48     STANDARD_RIGHTS_REQUIRED | SYNCHRONIZE | 0x1,  /* valid_access */
  49     {                                              /* mapping */
  50         STANDARD_RIGHTS_READ,
  51         STANDARD_RIGHTS_WRITE,
  52         STANDARD_RIGHTS_EXECUTE,
  53         STANDARD_RIGHTS_REQUIRED | 0x1
  54     },
  55 };
  56
  57 struct object_type
  58 {
  59     struct object     obj;        /* object header */
  60 };
  61
  62 static void object_type_dump( struct object *obj, int verbose );
  63
  64 static const struct object_ops object_type_ops =
  65 {
  66     sizeof(struct object_type),   /* size */
  67     &objtype_type,                /* type */
  68     object_type_dump,             /* dump */
  69     no_add_queue,                 /* add_queue */
  70     NULL,                         /* remove_queue */
  71     NULL,                         /* signaled */
  72     NULL,                         /* satisfied */
  73     no_signal,                    /* signal */
  74     no_get_fd,                    /* get_fd */
  75     default_map_access,           /* map_access */
  76     default_get_sd,               /* get_sd */
  77     default_set_sd,               /* set_sd */
  78     default_get_full_name,        /* get_full_name */
  79     no_lookup_name,               /* lookup_name */
  80     directory_link_name,          /* link_name */
  81     default_unlink_name,          /* unlink_name */
  82     no_open_file,                 /* open_file */
  83     no_kernel_obj_list,           /* get_kernel_obj_list */
  84     no_close_handle,              /* close_handle */
  85     no_destroy                    /* destroy */
  86 };
  87
  88
  89 static const WCHAR directory_name[] = {'D','i','r','e','c','t','o','r','y'};
  90
  91 struct type_descr directory_type =
  92 {
  93     { directory_name, sizeof(directory_name) },   /* name */
  94     DIRECTORY_ALL_ACCESS,                         /* valid_access */
  95     {                                             /* mapping */
  96         STANDARD_RIGHTS_READ | DIRECTORY_TRAVERSE | DIRECTORY_QUERY,
  97         STANDARD_RIGHTS_WRITE | DIRECTORY_CREATE_SUBDIRECTORY | DIRECTORY_CREATE_OBJECT,
  98         STANDARD_RIGHTS_EXECUTE | DIRECTORY_TRAVERSE | DIRECTORY_QUERY,
  99         DIRECTORY_ALL_ACCESS
 100     },
 101 };
 102
 103 struct directory
 104 {
 105     struct object     obj;        /* object header */
 106     struct namespace *entries;    /* directory's name space */
 107 };
 108
 109 static void directory_dump( struct object *obj, int verbose );
 110 static struct object *directory_lookup_name( struct object *obj, struct unicode_str *name,
 111                                              unsigned int attr, struct object *root );
 112 static void directory_destroy( struct object *obj );
 113
 114 static const struct object_ops directory_ops =
 115 {
 116     sizeof(struct directory),     /* size */
 117     &directory_type,              /* type */
 118     directory_dump,               /* dump */
 119     no_add_queue,                 /* add_queue */
 120     NULL,                         /* remove_queue */
 121     NULL,                         /* signaled */
 122     NULL,                         /* satisfied */
 123     no_signal,                    /* signal */
 124     no_get_fd,                    /* get_fd */
 125     default_map_access,           /* map_access */
 126     default_get_sd,               /* get_sd */
 127     default_set_sd,               /* set_sd */
 128     default_get_full_name,        /* get_full_name */
 129     directory_lookup_name,        /* lookup_name */
 130     directory_link_name,          /* link_name */
 131     default_unlink_name,          /* unlink_name */
 132     no_open_file,                 /* open_file */
 133     no_kernel_obj_list,           /* get_kernel_obj_list */
 134     no_close_handle,              /* close_handle */
 135     directory_destroy             /* destroy */
 136 };
 137
 138 static struct directory *root_directory;
 139 static struct directory *dir_objtype;
 140
 141
 142 static struct type_descr *types[] =
 143 {
 144     &objtype_type,
 145     &directory_type,
 146     &symlink_type,
 147     &token_type,
 148     &job_type,
 149     &process_type,
 150     &thread_type,
 151     &debug_obj_type,
 152     &event_type,
 153     &mutex_type,
 154     &semaphore_type,
 155     &timer_type,
 156     &keyed_event_type,
 157     &winstation_type,
 158     &desktop_type,
 159     &device_type,
 160     &completion_type,
 161     &file_type,
 162     &mapping_type,
 163     &key_type,
 164 };
 165
 166 static void object_type_dump( struct object *obj, int verbose )
 167 {
 168     fputs( "Object type\n", stderr );
 169 }
 170
 171 static struct object_type *create_object_type( struct object *root, unsigned int index,
 172                                                unsigned int attr, const struct security_descriptor *sd )
 173 {
 174     struct type_descr *descr = types[index];
 175     struct object_type *type;
 176
 177     if ((type = create_named_object( root, &object_type_ops, &descr->name, attr, sd )))
 178     {
 179         descr->index = index;
 180     }
 181     return type;
 182 }
 183
 184 static void directory_dump( struct object *obj, int verbose )
 185 {
 186     fputs( "Directory\n", stderr );
 187 }
 188
 189 static struct object *directory_lookup_name( struct object *obj, struct unicode_str *name,
 190                                              unsigned int attr, struct object *root )
 191 {
 192     struct directory *dir = (struct directory *)obj;
 193     struct object *found;
 194     struct unicode_str tmp;
 195
 196     assert( obj->ops == &directory_ops );
 197
 198     if (!name) return NULL;  /* open the directory itself */
 199
 200     tmp.str = name->str;
 201     tmp.len = get_path_element( name->str, name->len );
 202
 203     if ((found = find_object( dir->entries, &tmp, attr )))
 204     {
 205         /* Skip trailing \\ and move to the next element */
 206         if (tmp.len < name->len)
 207         {
 208             tmp.len += sizeof(WCHAR);
 209             name->str += tmp.len / sizeof(WCHAR);
 210             name->len -= tmp.len;
 211         }
 212         else
 213         {
 214             name->str = NULL;
 215             name->len = 0;
 216         }
 217         return found;
 218     }
 219
 220     if (name->str)  /* not the last element */
 221     {
 222         if (tmp.len == 0) /* Double backslash */
 223             set_error( STATUS_OBJECT_NAME_INVALID );
 224         else if (tmp.len < name->len)  /* Path still has backslashes */
 225             set_error( STATUS_OBJECT_PATH_NOT_FOUND );
 226     }
 227     return NULL;
 228 }
 229
 230 int directory_link_name( struct object *obj, struct object_name *name, struct object *parent )
 231 {
 232     struct directory *dir = (struct directory *)parent;
 233
 234     if (parent->ops != &directory_ops)
 235     {
 236         set_error( STATUS_OBJECT_TYPE_MISMATCH );
 237         return 0;
 238     }
 239     namespace_add( dir->entries, name );
 240     name->parent = grab_object( parent );
 241     return 1;
 242 }
 243
 244 static void directory_destroy( struct object *obj )
 245 {
 246     struct directory *dir = (struct directory *)obj;
 247     assert( obj->ops == &directory_ops );
 248     free( dir->entries );
 249 }
 250
 251 static struct directory *create_directory( struct object *root, const struct unicode_str *name,
 252                                            unsigned int attr, unsigned int hash_size,
 253                                            const struct security_descriptor *sd )
 254 {
 255     struct directory *dir;
 256
 257     if ((dir = create_named_object( root, &directory_ops, name, attr, sd )) &&
 258         get_error() != STATUS_OBJECT_NAME_EXISTS)
 259     {
 260         if (!(dir->entries = create_namespace( hash_size )))
 261         {
 262             release_object( dir );
 263             return NULL;
 264         }
 265     }
 266     return dir;
 267 }
 268
 269 struct object *get_root_directory(void)
 270 {
 271     return grab_object( root_directory );
 272 }
 273
 274 /* return a directory object for creating/opening some object; no access rights are required */
 275 struct object *get_directory_obj( struct process *process, obj_handle_t handle )
 276 {
 277     return get_handle_obj( process, handle, 0, &directory_ops );
 278 }
 279
 280 /* Global initialization */
 281
 282 static void create_session( unsigned int id )
 283 {
 284     /* directories */
 285     static const WCHAR dir_sessionsW[] = {'S','e','s','s','i','o','n','s'};
 286     static const WCHAR dir_bnolinksW[] = {'B','N','O','L','I','N','K','S'};
 287     static const WCHAR dir_bnoW[] = {'B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'};
 288     static const WCHAR dir_dosdevicesW[] = {'D','o','s','D','e','v','i','c','e','s'};
 289     static const WCHAR dir_windowsW[] = {'W','i','n','d','o','w','s'};
 290     static const WCHAR dir_winstationsW[] = {'W','i','n','d','o','w','S','t','a','t','i','o','n','s'};
 291     static const struct unicode_str dir_sessions_str = {dir_sessionsW, sizeof(dir_sessionsW)};
 292     static const struct unicode_str dir_bnolinks_str = {dir_bnolinksW, sizeof(dir_bnolinksW)};
 293     static const struct unicode_str dir_bno_str = {dir_bnoW, sizeof(dir_bnoW)};
 294     static const struct unicode_str dir_dosdevices_str = {dir_dosdevicesW, sizeof(dir_dosdevicesW)};
 295     static const struct unicode_str dir_windows_str = {dir_windowsW, sizeof(dir_windowsW)};
 296     static const struct unicode_str dir_winstations_str = {dir_winstationsW, sizeof(dir_winstationsW)};
 297
 298     /* symlinks */
 299     static const WCHAR link_globalW[] = {'G','l','o','b','a','l'};
 300     static const WCHAR link_localW[]  = {'L','o','c','a','l'};
 301     static const WCHAR link_sessionW[] = {'S','e','s','s','i','o','n'};
 302     static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)};
 303     static const struct unicode_str link_local_str = {link_localW, sizeof(link_localW)};
 304     static const struct unicode_str link_session_str = {link_sessionW, sizeof(link_sessionW)};
 305
 306     static struct directory *dir_bno_global, *dir_sessions, *dir_bnolinks;
 307     struct directory *dir_id, *dir_bno, *dir_dosdevices, *dir_windows, *dir_winstation;
 308     struct object *link_global, *link_local, *link_session, *link_bno, *link_windows;
 309     struct unicode_str id_str;
 310     char id_strA[10];
 311     WCHAR *id_strW;
 312
 313     if (!id)
 314     {
 315         dir_bno_global = create_directory( &root_directory->obj, &dir_bno_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 316         dir_sessions   = create_directory( &root_directory->obj, &dir_sessions_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 317         dir_bnolinks   = create_directory( &dir_sessions->obj, &dir_bnolinks_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 318         release_object( dir_bno_global );
 319         release_object( dir_bnolinks );
 320         release_object( dir_sessions );
 321     }
 322
 323     sprintf( id_strA, "%u", id );
 324     id_strW = ascii_to_unicode_str( id_strA, &id_str );
 325     dir_id = create_directory( &dir_sessions->obj, &id_str, 0, HASH_SIZE, NULL );
 326     dir_dosdevices = create_directory( &dir_id->obj, &dir_dosdevices_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 327
 328     /* for session 0, directories are created under the root */
 329     if (!id)
 330     {
 331         dir_bno      = (struct directory *)grab_object( dir_bno_global );
 332         dir_windows  = create_directory( &root_directory->obj, &dir_windows_str, 0, HASH_SIZE, NULL );
 333         link_bno     = create_obj_symlink( &dir_id->obj, &dir_bno_str, OBJ_PERMANENT, &dir_bno->obj, NULL );
 334         link_windows = create_obj_symlink( &dir_id->obj, &dir_windows_str, OBJ_PERMANENT, &dir_windows->obj, NULL );
 335         release_object( link_bno );
 336         release_object( link_windows );
 337     }
 338     else
 339     {
 340         /* use a larger hash table for this one since it can contain a lot of objects */
 341         dir_bno     = create_directory( &dir_id->obj, &dir_bno_str, 0, 37, NULL );
 342         dir_windows = create_directory( &dir_id->obj, &dir_windows_str, 0, HASH_SIZE, NULL );
 343     }
 344     dir_winstation = create_directory( &dir_windows->obj, &dir_winstations_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 345
 346     link_global  = create_obj_symlink( &dir_bno->obj, &link_global_str, OBJ_PERMANENT, &dir_bno_global->obj, NULL );
 347     link_local   = create_obj_symlink( &dir_bno->obj, &link_local_str, OBJ_PERMANENT, &dir_bno->obj, NULL );
 348     link_session = create_obj_symlink( &dir_bno->obj, &link_session_str, OBJ_PERMANENT, &dir_bnolinks->obj, NULL );
 349     link_bno     = create_obj_symlink( &dir_bnolinks->obj, &id_str, OBJ_PERMANENT, &dir_bno->obj, NULL );
 350     release_object( link_global );
 351     release_object( link_local );
 352     release_object( link_session );
 353     release_object( link_bno );
 354
 355     release_object( dir_dosdevices );
 356     release_object( dir_winstation );
 357     release_object( dir_windows );
 358     release_object( dir_bno );
 359     release_object( dir_id );
 360     free( id_strW );
 361 }
 362
 363 void init_directories( struct fd *intl_fd )
 364 {
 365     /* Directories */
 366     static const WCHAR dir_globalW[] = {'?','?'};
 367     static const WCHAR dir_driverW[] = {'D','r','i','v','e','r'};
 368     static const WCHAR dir_deviceW[] = {'D','e','v','i','c','e'};
 369     static const WCHAR dir_objtypeW[] = {'O','b','j','e','c','t','T','y','p','e','s'};
 370     static const WCHAR dir_kernelW[] = {'K','e','r','n','e','l','O','b','j','e','c','t','s'};
 371     static const WCHAR dir_nlsW[] = {'N','L','S'};
 372     static const struct unicode_str dir_global_str = {dir_globalW, sizeof(dir_globalW)};
 373     static const struct unicode_str dir_driver_str = {dir_driverW, sizeof(dir_driverW)};
 374     static const struct unicode_str dir_device_str = {dir_deviceW, sizeof(dir_deviceW)};
 375     static const struct unicode_str dir_objtype_str = {dir_objtypeW, sizeof(dir_objtypeW)};
 376     static const struct unicode_str dir_kernel_str = {dir_kernelW, sizeof(dir_kernelW)};
 377     static const struct unicode_str dir_nls_str = {dir_nlsW, sizeof(dir_nlsW)};
 378
 379     /* symlinks */
 380     static const WCHAR link_dosdevW[] = {'D','o','s','D','e','v','i','c','e','s'};
 381     static const WCHAR link_globalrootW[] = {'G','L','O','B','A','L','R','O','O','T'};
 382     static const WCHAR link_globalW[] = {'G','l','o','b','a','l'};
 383     static const WCHAR link_nulW[]    = {'N','U','L'};
 384     static const WCHAR link_pipeW[]   = {'P','I','P','E'};
 385     static const WCHAR link_mailslotW[] = {'M','A','I','L','S','L','O','T'};
 386     static const WCHAR link_coninW[]  = {'C','O','N','I','N','$'};
 387     static const WCHAR link_conoutW[] = {'C','O','N','O','U','T','$'};
 388     static const WCHAR link_conW[]    = {'C','O','N'};
 389     static const WCHAR link_currentinW[]  = {'\\','D','e','v','i','c','e','\\','C','o','n','D','r','v',
 390         '\\','C','u','r','r','e','n','t','I','n'};
 391     static const WCHAR link_currentoutW[] = {'\\','D','e','v','i','c','e','\\','C','o','n','D','r','v',
 392         '\\','C','u','r','r','e','n','t','O','u','t'};
 393     static const WCHAR link_consoleW[]    = {'\\','D','e','v','i','c','e','\\','C','o','n','D','r','v',
 394         '\\','C','o','n','s','o','l','e'};
 395     static const struct unicode_str link_dosdev_str = {link_dosdevW, sizeof(link_dosdevW)};
 396     static const struct unicode_str link_globalroot_str = {link_globalrootW, sizeof(link_globalrootW)};
 397     static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)};
 398     static const struct unicode_str link_nul_str    = {link_nulW, sizeof(link_nulW)};
 399     static const struct unicode_str link_pipe_str   = {link_pipeW, sizeof(link_pipeW)};
 400     static const struct unicode_str link_mailslot_str = {link_mailslotW, sizeof(link_mailslotW)};
 401     static const struct unicode_str link_con_str      = {link_conW, sizeof(link_conW)};
 402     static const struct unicode_str link_conin_str    = {link_coninW, sizeof(link_coninW)};
 403     static const struct unicode_str link_conout_str   = {link_conoutW, sizeof(link_conoutW)};
 404     static const struct unicode_str link_currentin_str = {link_currentinW, sizeof(link_currentinW)};
 405     static const struct unicode_str link_currentout_str = {link_currentoutW, sizeof(link_currentoutW)};
 406     static const struct unicode_str link_console_str  = {link_consoleW, sizeof(link_consoleW)};
 407
 408     /* devices */
 409     static const WCHAR named_pipeW[] = {'N','a','m','e','d','P','i','p','e'};
 410     static const WCHAR mailslotW[] = {'M','a','i','l','S','l','o','t'};
 411     static const WCHAR condrvW[] = {'C','o','n','D','r','v'};
 412     static const WCHAR nullW[] = {'N','u','l','l'};
 413     static const WCHAR afdW[] = {'A','f','d'};
 414     static const struct unicode_str named_pipe_str = {named_pipeW, sizeof(named_pipeW)};
 415     static const struct unicode_str mailslot_str = {mailslotW, sizeof(mailslotW)};
 416     static const struct unicode_str condrv_str = {condrvW, sizeof(condrvW)};
 417     static const struct unicode_str null_str = {nullW, sizeof(nullW)};
 418     static const struct unicode_str afd_str = {afdW, sizeof(afdW)};
 419
 420     /* events */
 421     static const WCHAR event_low_memW[] = {'L','o','w','M','e','m','o','r','y','C','o','n','d','i','t','i','o','n'};
 422     static const WCHAR event_low_pagedW[] = {'L','o','w','P','a','g','e','d','P','o','o','l','C','o','n','d','i','t','i','o','n'};
 423     static const WCHAR event_low_nonpgW[] = {'L','o','w','N','o','n','P','a','g','e','d','P','o','o','l','C','o','n','d','i','t','i','o','n'};
 424     static const WCHAR event_high_memW[] = {'H','i','g','h','M','e','m','o','r','y','C','o','n','d','i','t','i','o','n'};
 425     static const WCHAR event_high_pagedW[] = {'H','i','g','h','P','a','g','e','d','P','o','o','l','C','o','n','d','i','t','i','o','n'};
 426     static const WCHAR event_high_nonpgW[] = {'H','i','g','h','N','o','n','P','a','g','e','d','P','o','o','l','C','o','n','d','i','t','i','o','n'};
 427     static const WCHAR keyed_event_crit_sectW[] = {'C','r','i','t','S','e','c','O','u','t','O','f','M','e','m','o','r','y','E','v','e','n','t'};
 428     static const struct unicode_str kernel_events[] =
 429     {
 430         { event_low_memW, sizeof(event_low_memW) },
 431         { event_low_pagedW, sizeof(event_low_pagedW) },
 432         { event_low_nonpgW, sizeof(event_low_nonpgW) },
 433         { event_high_memW, sizeof(event_high_memW) },
 434         { event_high_pagedW, sizeof(event_high_pagedW) },
 435         { event_high_nonpgW, sizeof(event_high_nonpgW) }
 436     };
 437     static const struct unicode_str keyed_event_crit_sect_str = {keyed_event_crit_sectW, sizeof(keyed_event_crit_sectW)};
 438
 439     /* mappings */
 440     static const WCHAR intlW[] = {'N','l','s','S','e','c','t','i','o','n','L','A','N','G','_','I','N','T','L'};
 441     static const WCHAR user_dataW[] = {'_','_','w','i','n','e','_','u','s','e','r','_','s','h','a','r','e','d','_','d','a','t','a'};
 442     static const struct unicode_str intl_str = {intlW, sizeof(intlW)};
 443     static const struct unicode_str user_data_str = {user_dataW, sizeof(user_dataW)};
 444
 445     struct directory *dir_driver, *dir_device, *dir_global, *dir_kernel, *dir_nls;
 446     struct object *named_pipe_device, *mailslot_device, *null_device;
 447     unsigned int i;
 448
 449     root_directory = create_directory( NULL, NULL, OBJ_PERMANENT, HASH_SIZE, NULL );
 450     dir_driver     = create_directory( &root_directory->obj, &dir_driver_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 451     dir_device     = create_directory( &root_directory->obj, &dir_device_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 452     dir_objtype    = create_directory( &root_directory->obj, &dir_objtype_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 453     dir_kernel     = create_directory( &root_directory->obj, &dir_kernel_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 454     dir_global     = create_directory( &root_directory->obj, &dir_global_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 455     dir_nls        = create_directory( &root_directory->obj, &dir_nls_str, OBJ_PERMANENT, HASH_SIZE, NULL );
 456
 457     /* devices */
 458     named_pipe_device = create_named_pipe_device( &dir_device->obj, &named_pipe_str, OBJ_PERMANENT, NULL );
 459     mailslot_device   = create_mailslot_device( &dir_device->obj, &mailslot_str, OBJ_PERMANENT, NULL );
 460     null_device       = create_unix_device( &dir_device->obj, &null_str, OBJ_PERMANENT, NULL, "/dev/null" );
 461     release_object( create_console_device( &dir_device->obj, &condrv_str, OBJ_PERMANENT, NULL ));
 462     release_object( create_socket_device( &dir_device->obj, &afd_str, OBJ_PERMANENT, NULL ));
 463
 464     /* sessions */
 465     create_session( 0 );
 466     create_session( default_session_id );
 467
 468     /* object types */
 469
 470     for (i = 0; i < ARRAY_SIZE(types); i++)
 471         release_object( create_object_type( &dir_objtype->obj, i, OBJ_PERMANENT, NULL ));
 472
 473     /* symlinks */
 474     release_object( create_obj_symlink( &root_directory->obj, &link_dosdev_str, OBJ_PERMANENT, &dir_global->obj, NULL ));
 475     release_object( create_root_symlink( &dir_global->obj, &link_globalroot_str, OBJ_PERMANENT, NULL ));
 476     release_object( create_obj_symlink( &dir_global->obj, &link_global_str, OBJ_PERMANENT, &dir_global->obj, NULL ));
 477     release_object( create_obj_symlink( &dir_global->obj, &link_nul_str, OBJ_PERMANENT, null_device, NULL ));
 478     release_object( create_obj_symlink( &dir_global->obj, &link_pipe_str, OBJ_PERMANENT, named_pipe_device, NULL ));
 479     release_object( create_obj_symlink( &dir_global->obj, &link_mailslot_str, OBJ_PERMANENT, mailslot_device, NULL ));
 480     release_object( create_symlink( &dir_global->obj, &link_conin_str, OBJ_PERMANENT, &link_currentin_str, NULL ));
 481     release_object( create_symlink( &dir_global->obj, &link_conout_str, OBJ_PERMANENT, &link_currentout_str, NULL ));
 482     release_object( create_symlink( &dir_global->obj, &link_con_str, OBJ_PERMANENT, &link_console_str, NULL ));
 483
 484     /* events */
 485     for (i = 0; i < ARRAY_SIZE( kernel_events ); i++)
 486         release_object( create_event( &dir_kernel->obj, &kernel_events[i], OBJ_PERMANENT, 1, 0, NULL ));
 487     release_object( create_keyed_event( &dir_kernel->obj, &keyed_event_crit_sect_str, OBJ_PERMANENT, NULL ));
 488
 489     /* mappings */
 490     release_object( create_fd_mapping( &dir_nls->obj, &intl_str, intl_fd, OBJ_PERMANENT, NULL ));
 491     release_object( create_user_data_mapping( &dir_kernel->obj, &user_data_str, OBJ_PERMANENT, NULL ));
 492     release_object( intl_fd );
 493
 494     release_object( named_pipe_device );
 495     release_object( mailslot_device );
 496     release_object( null_device );
 497     release_object( root_directory );
 498     release_object( dir_driver );
 499     release_object( dir_device );
 500     release_object( dir_objtype );
 501     release_object( dir_kernel );
 502     release_object( dir_nls );
 503     release_object( dir_global );
 504 }
 505
 506 /* create a directory object */
 507 DECL_HANDLER(create_directory)
 508 {
 509     struct unicode_str name;
 510     struct object *root;
 511     struct directory *dir;
 512     const struct security_descriptor *sd;
 513     const struct object_attributes *objattr = get_req_object_attributes( &sd, &name, &root );
 514
 515     if (!objattr) return;
 516
 517     if ((dir = create_directory( root, &name, objattr->attributes, HASH_SIZE, sd )))
 518     {
 519         reply->handle = alloc_handle( current->process, dir, req->access, objattr->attributes );
 520         release_object( dir );
 521     }
 522
 523     if (root) release_object( root );
 524 }
 525
 526 /* open a directory object */
 527 DECL_HANDLER(open_directory)
 528 {
 529     struct unicode_str name = get_req_unicode_str();
 530
 531     reply->handle = open_object( current->process, req->rootdir, req->access,
 532                                  &directory_ops, &name, req->attributes );
 533 }
 534
 535 /* get a directory entry by index */
 536 DECL_HANDLER(get_directory_entry)
 537 {
 538     struct directory *dir = (struct directory *)get_handle_obj( current->process, req->handle,
 539                                                                 DIRECTORY_QUERY, &directory_ops );
 540     if (dir)
 541     {
 542         struct object *obj = find_object_index( dir->entries, req->index );
 543         if (obj)
 544         {
 545             data_size_t name_len;
 546             const struct unicode_str *type_name = &obj->ops->type->name;
 547             const WCHAR *name = get_object_name( obj, &name_len );
 548
 549             reply->total_len = name_len + type_name->len;
 550
 551             if (reply->total_len <= get_reply_max_size())
 552             {
 553                 void *ptr = set_reply_data_size( reply->total_len );
 554                 if (ptr)
 555                 {
 556                     reply->name_len = name_len;
 557                     memcpy( ptr, name, name_len );
 558                     memcpy( (char *)ptr + name_len, type_name->str, type_name->len );
 559                 }
 560             }
 561             else set_error( STATUS_BUFFER_TOO_SMALL );
 562
 563             release_object( obj );
 564         }
 565         release_object( dir );
 566     }
 567 }
 568
 569 /* query object type name information */
 570 DECL_HANDLER(get_object_type)
 571 {
 572     struct object *obj;
 573     struct type_descr *type;
 574     struct object_type_info *info;
 575
 576     if (!(obj = get_handle_obj( current->process, req->handle, 0, NULL ))) return;
 577
 578     type = obj->ops->type;
 579     if (sizeof(*info) + type->name.len <= get_reply_max_size())
 580     {
 581         if ((info = set_reply_data_size( sizeof(*info) + type->name.len )))
 582         {
 583             info->name_len     = type->name.len;
 584             info->index        = type->index;
 585             info->obj_count    = type->obj_count;
 586             info->handle_count = type->handle_count;
 587             info->obj_max      = type->obj_max;
 588             info->handle_max   = type->handle_max;
 589             info->valid_access = type->valid_access;
 590             info->mapping      = type->mapping;
 591             memcpy( info + 1, type->name.str, type->name.len );
 592         }
 593     }
 594     else set_error( STATUS_BUFFER_OVERFLOW );
 595
 596     release_object( obj );
 597 }
 598
 599 /* query type information for all types */
 600 DECL_HANDLER(get_object_types)
 601 {
 602     struct object_type_info *info;
 603     data_size_t size = ARRAY_SIZE(types) * sizeof(*info);
 604     unsigned int i;
 605     char *next;
 606
 607     for (i = 0; i < ARRAY_SIZE(types); i++) size += (types[i]->name.len + 3) & ~3;
 608
 609     if (size <= get_reply_max_size())
 610     {
 611         if ((info = set_reply_data_size( size )))
 612         {
 613             for (i = 0; i < ARRAY_SIZE(types); i++)
 614             {
 615                 info->name_len     = types[i]->name.len;
 616                 info->index        = types[i]->index;
 617                 info->obj_count    = types[i]->obj_count;
 618                 info->handle_count = types[i]->handle_count;
 619                 info->obj_max      = types[i]->obj_max;
 620                 info->handle_max   = types[i]->handle_max;
 621                 info->valid_access = types[i]->valid_access;
 622                 info->mapping      = types[i]->mapping;
 623                 memcpy( info + 1, types[i]->name.str, types[i]->name.len );
 624                 next = (char *)(info + 1) + types[i]->name.len;
 625                 if (types[i]->name.len & 3)
 626                 {
 627                     memset( next, 0, 4 - (types[i]->name.len & 3) );
 628                     next += 4 - (types[i]->name.len & 3);
 629                 }
 630                 info = (struct object_type_info *)next;
 631             }
 632             reply->count = i;
 633         }
 634     }
 635     else set_error( STATUS_BUFFER_OVERFLOW );
 636 }