/* * Server-side directory object management * * Copyright (C) 2005 Vitaliy Margolen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include "ntstatus.h" #define WIN32_NO_STATUS #include "winternl.h" #include "ddk/wdm.h" #include "handle.h" #include "request.h" #include "process.h" #include "file.h" #include "unicode.h" #define HASH_SIZE 7 /* default hash size */ struct object_type { struct object obj; /* object header */ }; static void object_type_dump( struct object *obj, int verbose ); static struct object_type *object_type_get_type( struct object *obj ); static const struct object_ops object_type_ops = { sizeof(struct object_type), /* size */ object_type_dump, /* dump */ object_type_get_type, /* get_type */ no_add_queue, /* add_queue */ NULL, /* remove_queue */ NULL, /* signaled */ NULL, /* satisfied */ no_signal, /* signal */ no_get_fd, /* get_fd */ no_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ default_get_full_name, /* get_full_name */ no_lookup_name, /* lookup_name */ directory_link_name, /* link_name */ default_unlink_name, /* unlink_name */ no_open_file, /* open_file */ no_kernel_obj_list, /* get_kernel_obj_list */ no_close_handle, /* close_handle */ no_destroy /* destroy */ }; struct directory { struct object obj; /* object header */ struct namespace *entries; /* directory's name space */ }; static void directory_dump( struct object *obj, int verbose ); static struct object_type *directory_get_type( struct object *obj ); static struct object *directory_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attr ); static void directory_destroy( struct object *obj ); static const struct object_ops directory_ops = { sizeof(struct directory), /* size */ directory_dump, /* dump */ directory_get_type, /* get_type */ no_add_queue, /* add_queue */ NULL, /* remove_queue */ NULL, /* signaled */ NULL, /* satisfied */ no_signal, /* signal */ no_get_fd, /* get_fd */ default_fd_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ default_get_full_name, /* get_full_name */ directory_lookup_name, /* lookup_name */ directory_link_name, /* link_name */ default_unlink_name, /* unlink_name */ no_open_file, /* open_file */ no_kernel_obj_list, /* get_kernel_obj_list */ no_close_handle, /* close_handle */ directory_destroy /* destroy */ }; static struct directory *root_directory; static struct directory *dir_objtype; static void object_type_dump( struct object *obj, int verbose ) { fputs( "Object type\n", stderr ); } static struct object_type *object_type_get_type( struct object *obj ) { static const WCHAR name[] = {'O','b','j','e','c','t','T','y','p','e'}; static const struct unicode_str str = { name, sizeof(name) }; return get_object_type( &str ); } static void directory_dump( struct object *obj, int verbose ) { fputs( "Directory\n", stderr ); } static struct object_type *directory_get_type( struct object *obj ) { static const WCHAR name[] = {'D','i','r','e','c','t','o','r','y'}; static const struct unicode_str str = { name, sizeof(name) }; return get_object_type( &str ); } static struct object *directory_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attr ) { struct directory *dir = (struct directory *)obj; struct object *found; struct unicode_str tmp; assert( obj->ops == &directory_ops ); if (!name) return NULL; /* open the directory itself */ tmp.str = name->str; tmp.len = get_path_element( name->str, name->len ); if ((found = find_object( dir->entries, &tmp, attr ))) { /* Skip trailing \\ and move to the next element */ if (tmp.len < name->len) { tmp.len += sizeof(WCHAR); name->str += tmp.len / sizeof(WCHAR); name->len -= tmp.len; } else { name->str = NULL; name->len = 0; } return found; } if (name->str) /* not the last element */ { if (tmp.len == 0) /* Double backslash */ set_error( STATUS_OBJECT_NAME_INVALID ); else if (tmp.len < name->len) /* Path still has backslashes */ set_error( STATUS_OBJECT_PATH_NOT_FOUND ); } return NULL; } int directory_link_name( struct object *obj, struct object_name *name, struct object *parent ) { struct directory *dir = (struct directory *)parent; if (parent->ops != &directory_ops) { set_error( STATUS_OBJECT_TYPE_MISMATCH ); return 0; } namespace_add( dir->entries, name ); name->parent = grab_object( parent ); return 1; } static void directory_destroy( struct object *obj ) { struct directory *dir = (struct directory *)obj; assert( obj->ops == &directory_ops ); free( dir->entries ); } static struct directory *create_directory( struct object *root, const struct unicode_str *name, unsigned int attr, unsigned int hash_size, const struct security_descriptor *sd ) { struct directory *dir; if ((dir = create_named_object( root, &directory_ops, name, attr, sd )) && get_error() != STATUS_OBJECT_NAME_EXISTS) { if (!(dir->entries = create_namespace( hash_size ))) { release_object( dir ); return NULL; } } return dir; } struct object *get_root_directory(void) { return grab_object( root_directory ); } /* return a directory object for creating/opening some object; no access rights are required */ struct object *get_directory_obj( struct process *process, obj_handle_t handle ) { return get_handle_obj( process, handle, 0, &directory_ops ); } /* retrieve an object type, creating it if needed */ struct object_type *get_object_type( const struct unicode_str *name ) { struct object_type *type; if ((type = create_named_object( &dir_objtype->obj, &object_type_ops, name, OBJ_OPENIF, NULL ))) { if (get_error() != STATUS_OBJECT_NAME_EXISTS) { grab_object( type ); make_object_static( &type->obj ); } clear_error(); } return type; } /* Global initialization */ static void create_session( unsigned int id ) { /* directories */ static const WCHAR dir_sessionsW[] = {'S','e','s','s','i','o','n','s'}; static const WCHAR dir_bnolinksW[] = {'B','N','O','L','I','N','K','S'}; static const WCHAR dir_bnoW[] = {'B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'}; static const WCHAR dir_dosdevicesW[] = {'D','o','s','D','e','v','i','c','e','s'}; static const WCHAR dir_windowsW[] = {'W','i','n','d','o','w','s'}; static const WCHAR dir_winstationsW[] = {'W','i','n','d','o','w','S','t','a','t','i','o','n','s'}; static const struct unicode_str dir_sessions_str = {dir_sessionsW, sizeof(dir_sessionsW)}; static const struct unicode_str dir_bnolinks_str = {dir_bnolinksW, sizeof(dir_bnolinksW)}; static const struct unicode_str dir_bno_str = {dir_bnoW, sizeof(dir_bnoW)}; static const struct unicode_str dir_dosdevices_str = {dir_dosdevicesW, sizeof(dir_dosdevicesW)}; static const struct unicode_str dir_windows_str = {dir_windowsW, sizeof(dir_windowsW)}; static const struct unicode_str dir_winstations_str = {dir_winstationsW, sizeof(dir_winstationsW)}; /* symlinks */ static const WCHAR link_globalW[] = {'G','l','o','b','a','l'}; static const WCHAR link_localW[] = {'L','o','c','a','l'}; static const WCHAR link_sessionW[] = {'S','e','s','s','i','o','n'}; static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)}; static const struct unicode_str link_local_str = {link_localW, sizeof(link_localW)}; static const struct unicode_str link_session_str = {link_sessionW, sizeof(link_sessionW)}; static struct directory *dir_bno_global, *dir_sessions, *dir_bnolinks; struct directory *dir_id, *dir_bno, *dir_dosdevices, *dir_windows, *dir_winstation; struct object *link_global, *link_local, *link_session, *link_bno, *link_windows; struct unicode_str id_str; char id_strA[10]; WCHAR *id_strW; if (!id) { dir_bno_global = create_directory( &root_directory->obj, &dir_bno_str, 0, HASH_SIZE, NULL ); dir_sessions = create_directory( &root_directory->obj, &dir_sessions_str, 0, HASH_SIZE, NULL ); dir_bnolinks = create_directory( &dir_sessions->obj, &dir_bnolinks_str, 0, HASH_SIZE, NULL ); make_object_static( (struct object *)dir_bno_global ); make_object_static( (struct object *)dir_bnolinks ); make_object_static( (struct object *)dir_sessions ); } sprintf( id_strA, "%u", id ); id_strW = ascii_to_unicode_str( id_strA, &id_str ); dir_id = create_directory( &dir_sessions->obj, &id_str, 0, HASH_SIZE, NULL ); dir_dosdevices = create_directory( &dir_id->obj, &dir_dosdevices_str, 0, HASH_SIZE, NULL ); /* for session 0, directories are created under the root */ if (!id) { dir_bno = (struct directory *)grab_object( dir_bno_global ); dir_windows = create_directory( &root_directory->obj, &dir_windows_str, 0, HASH_SIZE, NULL ); link_bno = create_obj_symlink( &dir_id->obj, &dir_bno_str, 0, &dir_bno->obj, NULL ); link_windows = create_obj_symlink( &dir_id->obj, &dir_windows_str, 0, &dir_windows->obj, NULL ); make_object_static( link_bno ); make_object_static( link_windows ); } else { /* use a larger hash table for this one since it can contain a lot of objects */ dir_bno = create_directory( &dir_id->obj, &dir_bno_str, 0, 37, NULL ); dir_windows = create_directory( &dir_id->obj, &dir_windows_str, 0, HASH_SIZE, NULL ); } dir_winstation = create_directory( &dir_windows->obj, &dir_winstations_str, 0, HASH_SIZE, NULL ); link_global = create_obj_symlink( &dir_bno->obj, &link_global_str, 0, &dir_bno_global->obj, NULL ); link_local = create_obj_symlink( &dir_bno->obj, &link_local_str, 0, &dir_bno->obj, NULL ); link_session = create_obj_symlink( &dir_bno->obj, &link_session_str, 0, &dir_bnolinks->obj, NULL ); link_bno = create_obj_symlink( &dir_bnolinks->obj, &id_str, 0, &dir_bno->obj, NULL ); make_object_static( link_global ); make_object_static( link_local ); make_object_static( link_session ); make_object_static( link_bno ); make_object_static( &dir_dosdevices->obj ); make_object_static( &dir_winstation->obj ); release_object( dir_windows ); release_object( dir_bno ); release_object( dir_id ); free( id_strW ); } void init_directories(void) { /* Directories */ static const WCHAR dir_globalW[] = {'?','?'}; static const WCHAR dir_driverW[] = {'D','r','i','v','e','r'}; static const WCHAR dir_deviceW[] = {'D','e','v','i','c','e'}; static const WCHAR dir_objtypeW[] = {'O','b','j','e','c','t','T','y','p','e','s'}; static const WCHAR dir_kernelW[] = {'K','e','r','n','e','l','O','b','j','e','c','t','s'}; static const struct unicode_str dir_global_str = {dir_globalW, sizeof(dir_globalW)}; static const struct unicode_str dir_driver_str = {dir_driverW, sizeof(dir_driverW)}; static const struct unicode_str dir_device_str = {dir_deviceW, sizeof(dir_deviceW)}; static const struct unicode_str dir_objtype_str = {dir_objtypeW, sizeof(dir_objtypeW)}; static const struct unicode_str dir_kernel_str = {dir_kernelW, sizeof(dir_kernelW)}; /* symlinks */ static const WCHAR link_dosdevW[] = {'D','o','s','D','e','v','i','c','e','s'}; static const WCHAR link_globalW[] = {'G','l','o','b','a','l'}; static const WCHAR link_nulW[] = {'N','U','L'}; static const WCHAR link_pipeW[] = {'P','I','P','E'}; static const WCHAR link_mailslotW[] = {'M','A','I','L','S','L','O','T'}; static const WCHAR link_coninW[] = {'C','O','N','I','N','$'}; static const WCHAR link_conoutW[] = {'C','O','N','O','U','T','$'}; static const WCHAR link_conW[] = {'C','O','N'}; static const WCHAR link_currentinW[] = {'\\','D','e','v','i','c','e','\\','C','o','n','D','r','v', '\\','C','u','r','r','e','n','t','I','n'}; static const WCHAR link_currentoutW[] = {'\\','D','e','v','i','c','e','\\','C','o','n','D','r','v', '\\','C','u','r','r','e','n','t','O','u','t'}; static const WCHAR link_consoleW[] = {'\\','D','e','v','i','c','e','\\','C','o','n','D','r','v', '\\','C','o','n','s','o','l','e'}; static const struct unicode_str link_dosdev_str = {link_dosdevW, sizeof(link_dosdevW)}; static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)}; static const struct unicode_str link_nul_str = {link_nulW, sizeof(link_nulW)}; static const struct unicode_str link_pipe_str = {link_pipeW, sizeof(link_pipeW)}; static const struct unicode_str link_mailslot_str = {link_mailslotW, sizeof(link_mailslotW)}; static const struct unicode_str link_con_str = {link_conW, sizeof(link_conW)}; static const struct unicode_str link_conin_str = {link_coninW, sizeof(link_coninW)}; static const struct unicode_str link_conout_str = {link_conoutW, sizeof(link_conoutW)}; static const struct unicode_str link_currentin_str = {link_currentinW, sizeof(link_currentinW)}; static const struct unicode_str link_currentout_str = {link_currentoutW, sizeof(link_currentoutW)}; static const struct unicode_str link_console_str = {link_consoleW, sizeof(link_consoleW)}; /* devices */ static const WCHAR named_pipeW[] = {'N','a','m','e','d','P','i','p','e'}; static const WCHAR mailslotW[] = {'M','a','i','l','S','l','o','t'}; static const WCHAR condrvW[] = {'C','o','n','D','r','v'}; static const WCHAR nullW[] = {'N','u','l','l'}; static const WCHAR afdW[] = {'A','f','d'}; static const struct unicode_str named_pipe_str = {named_pipeW, sizeof(named_pipeW)}; static const struct unicode_str mailslot_str = {mailslotW, sizeof(mailslotW)}; static const struct unicode_str condrv_str = {condrvW, sizeof(condrvW)}; static const struct unicode_str null_str = {nullW, sizeof(nullW)}; static const struct unicode_str afd_str = {afdW, sizeof(afdW)}; /* events */ static const WCHAR event_low_memW[] = {'L','o','w','M','e','m','o','r','y','C','o','n','d','i','t','i','o','n'}; 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'}; 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'}; 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'}; 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'}; 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'}; 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'}; static const struct unicode_str kernel_events[] = { { event_low_memW, sizeof(event_low_memW) }, { event_low_pagedW, sizeof(event_low_pagedW) }, { event_low_nonpgW, sizeof(event_low_nonpgW) }, { event_high_memW, sizeof(event_high_memW) }, { event_high_pagedW, sizeof(event_high_pagedW) }, { event_high_nonpgW, sizeof(event_high_nonpgW) } }; static const struct unicode_str keyed_event_crit_sect_str = {keyed_event_crit_sectW, sizeof(keyed_event_crit_sectW)}; /* mappings */ static const WCHAR user_dataW[] = {'_','_','w','i','n','e','_','u','s','e','r','_','s','h','a','r','e','d','_','d','a','t','a'}; static const struct unicode_str user_data_str = {user_dataW, sizeof(user_dataW)}; struct directory *dir_driver, *dir_device, *dir_global, *dir_kernel; struct object *link_dosdev, *link_global, *link_nul, *link_pipe, *link_mailslot; struct object *link_conin, *link_conout, *link_con; struct object *named_pipe_device, *mailslot_device, *null_device, *user_data_mapping, *console_device, *socket_device; struct keyed_event *keyed_event; unsigned int i; root_directory = create_directory( NULL, NULL, 0, HASH_SIZE, NULL ); dir_driver = create_directory( &root_directory->obj, &dir_driver_str, 0, HASH_SIZE, NULL ); dir_device = create_directory( &root_directory->obj, &dir_device_str, 0, HASH_SIZE, NULL ); dir_objtype = create_directory( &root_directory->obj, &dir_objtype_str, 0, HASH_SIZE, NULL ); dir_kernel = create_directory( &root_directory->obj, &dir_kernel_str, 0, HASH_SIZE, NULL ); dir_global = create_directory( &root_directory->obj, &dir_global_str, 0, HASH_SIZE, NULL ); make_object_static( &root_directory->obj ); make_object_static( &dir_driver->obj ); make_object_static( &dir_objtype->obj ); /* devices */ named_pipe_device = create_named_pipe_device( &dir_device->obj, &named_pipe_str ); mailslot_device = create_mailslot_device( &dir_device->obj, &mailslot_str ); console_device = create_console_device( &dir_device->obj, &condrv_str ); socket_device = create_socket_device( &dir_device->obj, &afd_str ); null_device = create_unix_device( &dir_device->obj, &null_str, "/dev/null" ); make_object_static( named_pipe_device ); make_object_static( mailslot_device ); make_object_static( null_device ); make_object_static( console_device ); make_object_static( socket_device ); /* sessions */ create_session( 0 ); create_session( 1 ); /* symlinks */ link_dosdev = create_obj_symlink( &root_directory->obj, &link_dosdev_str, 0, &dir_global->obj, NULL ); link_global = create_obj_symlink( &dir_global->obj, &link_global_str, 0, &dir_global->obj, NULL ); link_nul = create_obj_symlink( &dir_global->obj, &link_nul_str, 0, null_device, NULL ); link_pipe = create_obj_symlink( &dir_global->obj, &link_pipe_str, 0, named_pipe_device, NULL ); link_mailslot = create_obj_symlink( &dir_global->obj, &link_mailslot_str, 0, mailslot_device, NULL ); link_conin = create_symlink( &dir_global->obj, &link_conin_str, 0, &link_currentin_str, NULL ); link_conout = create_symlink( &dir_global->obj, &link_conout_str, 0, &link_currentout_str, NULL ); link_con = create_symlink( &dir_global->obj, &link_con_str, 0, &link_console_str, NULL ); make_object_static( link_dosdev ); make_object_static( link_global ); make_object_static( link_nul ); make_object_static( link_pipe ); make_object_static( link_mailslot ); make_object_static( link_conin ); make_object_static( link_conout ); make_object_static( link_con ); /* events */ for (i = 0; i < ARRAY_SIZE( kernel_events ); i++) { struct event *event = create_event( &dir_kernel->obj, &kernel_events[i], 0, 1, 0, NULL ); make_object_static( (struct object *)event ); } keyed_event = create_keyed_event( &dir_kernel->obj, &keyed_event_crit_sect_str, 0, NULL ); make_object_static( (struct object *)keyed_event ); /* user data mapping */ user_data_mapping = create_user_data_mapping( &dir_kernel->obj, &user_data_str, 0, NULL ); make_object_static( user_data_mapping ); /* the objects hold references so we can release these directories */ release_object( dir_global ); release_object( dir_device ); release_object( dir_kernel ); } /* create a directory object */ DECL_HANDLER(create_directory) { struct unicode_str name; struct object *root; struct directory *dir; const struct security_descriptor *sd; const struct object_attributes *objattr = get_req_object_attributes( &sd, &name, &root ); if (!objattr) return; if ((dir = create_directory( root, &name, objattr->attributes, HASH_SIZE, sd ))) { reply->handle = alloc_handle( current->process, dir, req->access, objattr->attributes ); release_object( dir ); } if (root) release_object( root ); } /* open a directory object */ DECL_HANDLER(open_directory) { struct unicode_str name = get_req_unicode_str(); reply->handle = open_object( current->process, req->rootdir, req->access, &directory_ops, &name, req->attributes ); } /* get a directory entry by index */ DECL_HANDLER(get_directory_entry) { struct directory *dir = (struct directory *)get_handle_obj( current->process, req->handle, DIRECTORY_QUERY, &directory_ops ); if (dir) { struct object *obj = find_object_index( dir->entries, req->index ); if (obj) { data_size_t name_len, type_len = 0; const WCHAR *type_name = NULL; const WCHAR *name = get_object_name( obj, &name_len ); struct object_type *type = obj->ops->get_type( obj ); if (type) type_name = get_object_name( &type->obj, &type_len ); if (name_len + type_len <= get_reply_max_size()) { void *ptr = set_reply_data_size( name_len + type_len ); if (ptr) { reply->name_len = name_len; memcpy( ptr, name, name_len ); memcpy( (char *)ptr + name_len, type_name, type_len ); } } else set_error( STATUS_BUFFER_OVERFLOW ); if (type) release_object( type ); release_object( obj ); } release_object( dir ); } } /* query object type name information */ DECL_HANDLER(get_object_type) { struct object *obj; struct object_type *type; const WCHAR *name; if (!(obj = get_handle_obj( current->process, req->handle, 0, NULL ))) return; if ((type = obj->ops->get_type( obj ))) { if ((name = get_object_name( &type->obj, &reply->total ))) set_reply_data( name, min( reply->total, get_reply_max_size() ) ); release_object( type ); } release_object( obj ); }