489 lines
20 KiB
C
489 lines
20 KiB
C
/*
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* Server-side directory object management
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*
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* Copyright (C) 2005 Vitaliy Margolen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "winternl.h"
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#include "ddk/wdm.h"
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#include "handle.h"
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#include "request.h"
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#include "process.h"
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#include "file.h"
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#include "unicode.h"
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#define HASH_SIZE 7 /* default hash size */
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struct object_type
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{
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struct object obj; /* object header */
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};
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static void object_type_dump( struct object *obj, int verbose );
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static struct object_type *object_type_get_type( struct object *obj );
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static const struct object_ops object_type_ops =
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{
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sizeof(struct object_type), /* size */
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object_type_dump, /* dump */
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object_type_get_type, /* get_type */
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no_add_queue, /* add_queue */
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NULL, /* remove_queue */
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NULL, /* signaled */
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NULL, /* satisfied */
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no_signal, /* signal */
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no_get_fd, /* get_fd */
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no_map_access, /* map_access */
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default_get_sd, /* get_sd */
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default_set_sd, /* set_sd */
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no_lookup_name, /* lookup_name */
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directory_link_name, /* link_name */
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default_unlink_name, /* unlink_name */
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no_open_file, /* open_file */
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no_close_handle, /* close_handle */
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no_destroy /* destroy */
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};
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struct directory
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{
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struct object obj; /* object header */
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struct namespace *entries; /* directory's name space */
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};
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static void directory_dump( struct object *obj, int verbose );
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static struct object_type *directory_get_type( struct object *obj );
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static struct object *directory_lookup_name( struct object *obj, struct unicode_str *name,
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unsigned int attr );
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static void directory_destroy( struct object *obj );
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static const struct object_ops directory_ops =
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{
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sizeof(struct directory), /* size */
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directory_dump, /* dump */
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directory_get_type, /* get_type */
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no_add_queue, /* add_queue */
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NULL, /* remove_queue */
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NULL, /* signaled */
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NULL, /* satisfied */
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no_signal, /* signal */
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no_get_fd, /* get_fd */
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default_fd_map_access, /* map_access */
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default_get_sd, /* get_sd */
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default_set_sd, /* set_sd */
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directory_lookup_name, /* lookup_name */
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directory_link_name, /* link_name */
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default_unlink_name, /* unlink_name */
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no_open_file, /* open_file */
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no_close_handle, /* close_handle */
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directory_destroy /* destroy */
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};
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static struct directory *root_directory;
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static struct directory *dir_objtype;
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static void object_type_dump( struct object *obj, int verbose )
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{
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fputs( "Object type\n", stderr );
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}
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static struct object_type *object_type_get_type( struct object *obj )
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{
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static const WCHAR name[] = {'O','b','j','e','c','t','T','y','p','e'};
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static const struct unicode_str str = { name, sizeof(name) };
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return get_object_type( &str );
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}
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static void directory_dump( struct object *obj, int verbose )
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{
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fputs( "Directory\n", stderr );
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}
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static struct object_type *directory_get_type( struct object *obj )
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{
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static const WCHAR name[] = {'D','i','r','e','c','t','o','r','y'};
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static const struct unicode_str str = { name, sizeof(name) };
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return get_object_type( &str );
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}
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static struct object *directory_lookup_name( struct object *obj, struct unicode_str *name,
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unsigned int attr )
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{
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struct directory *dir = (struct directory *)obj;
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struct object *found;
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struct unicode_str tmp;
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const WCHAR *p;
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assert( obj->ops == &directory_ops );
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if (!name) return NULL; /* open the directory itself */
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if (!(p = memchrW( name->str, '\\', name->len / sizeof(WCHAR) )))
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/* Last element in the path name */
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tmp.len = name->len;
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else
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tmp.len = (p - name->str) * sizeof(WCHAR);
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tmp.str = name->str;
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if ((found = find_object( dir->entries, &tmp, attr )))
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{
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/* Skip trailing \\ */
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if (p)
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{
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p++;
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tmp.len += sizeof(WCHAR);
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}
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/* Move to the next element*/
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name->str = p;
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name->len -= tmp.len;
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return found;
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}
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if (name->str) /* not the last element */
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{
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if (tmp.len == 0) /* Double backslash */
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set_error( STATUS_OBJECT_NAME_INVALID );
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else if (p) /* Path still has backslashes */
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set_error( STATUS_OBJECT_PATH_NOT_FOUND );
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}
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return NULL;
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}
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int directory_link_name( struct object *obj, struct object_name *name, struct object *parent )
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{
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struct directory *dir = (struct directory *)parent;
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if (parent->ops != &directory_ops)
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{
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set_error( STATUS_OBJECT_TYPE_MISMATCH );
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return 0;
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}
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namespace_add( dir->entries, name );
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name->parent = grab_object( parent );
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return 1;
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}
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static void directory_destroy( struct object *obj )
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{
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struct directory *dir = (struct directory *)obj;
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assert( obj->ops == &directory_ops );
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free( dir->entries );
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}
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static struct directory *create_directory( struct directory *root, const struct unicode_str *name,
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unsigned int attr, unsigned int hash_size,
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const struct security_descriptor *sd )
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{
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struct directory *dir;
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if ((dir = create_named_object_dir( root, name, attr, &directory_ops )) &&
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get_error() != STATUS_OBJECT_NAME_EXISTS)
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{
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if (!(dir->entries = create_namespace( hash_size )))
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{
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release_object( dir );
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return NULL;
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}
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if (sd) default_set_sd( &dir->obj, sd, OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION |
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DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION );
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}
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return dir;
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}
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struct object *get_root_directory(void)
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{
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return grab_object( root_directory );
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}
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struct directory *get_directory_obj( struct process *process, obj_handle_t handle, unsigned int access )
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{
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return (struct directory *)get_handle_obj( process, handle, access, &directory_ops );
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}
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/* create a named (if name is present) or unnamed object. */
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void *create_named_object_dir( struct directory *root, const struct unicode_str *name,
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unsigned int attributes, const struct object_ops *ops )
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{
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return create_named_object( &root->obj, ops, name, attributes );
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}
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/* retrieve an object type, creating it if needed */
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struct object_type *get_object_type( const struct unicode_str *name )
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{
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struct object_type *type;
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if ((type = create_named_object_dir( dir_objtype, name, OBJ_OPENIF, &object_type_ops )))
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{
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if (get_error() != STATUS_OBJECT_NAME_EXISTS)
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{
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grab_object( type );
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make_object_static( &type->obj );
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}
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clear_error();
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}
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return type;
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}
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/* Global initialization */
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void init_directories(void)
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{
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/* Directories */
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static const WCHAR dir_globalW[] = {'\\','?','?'};
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static const WCHAR dir_driverW[] = {'D','r','i','v','e','r'};
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static const WCHAR dir_deviceW[] = {'D','e','v','i','c','e'};
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static const WCHAR dir_nullW[] = {'\\','D','e','v','i','c','e','\\','N','u','l','l'};
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static const WCHAR dir_basenamedW[] = {'\\','B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'};
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static const WCHAR dir_named_pipeW[] = {'\\','D','e','v','i','c','e','\\','N','a','m','e','d','P','i','p','e'};
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static const WCHAR dir_mailslotW[] = {'\\','D','e','v','i','c','e','\\','M','a','i','l','S','l','o','t'};
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static const WCHAR dir_objtypeW[] = {'O','b','j','e','c','t','T','y','p','e','s'};
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static const WCHAR dir_sessionsW[] = {'S','e','s','s','i','o','n','s'};
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static const WCHAR dir_kernelW[] = {'K','e','r','n','e','l','O','b','j','e','c','t','s'};
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static const WCHAR dir_windowsW[] = {'W','i','n','d','o','w','s'};
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static const WCHAR dir_winstationsW[] = {'W','i','n','d','o','w','S','t','a','t','i','o','n','s'};
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static const struct unicode_str dir_global_str = {dir_globalW, sizeof(dir_globalW)};
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static const struct unicode_str dir_driver_str = {dir_driverW, sizeof(dir_driverW)};
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static const struct unicode_str dir_device_str = {dir_deviceW, sizeof(dir_deviceW)};
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static const struct unicode_str dir_null_str = {dir_nullW, sizeof(dir_nullW)};
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static const struct unicode_str dir_basenamed_str = {dir_basenamedW, sizeof(dir_basenamedW)};
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static const struct unicode_str dir_named_pipe_str = {dir_named_pipeW, sizeof(dir_named_pipeW)};
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static const struct unicode_str dir_mailslot_str = {dir_mailslotW, sizeof(dir_mailslotW)};
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static const struct unicode_str dir_objtype_str = {dir_objtypeW, sizeof(dir_objtypeW)};
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static const struct unicode_str dir_sessions_str = {dir_sessionsW, sizeof(dir_sessionsW)};
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static const struct unicode_str dir_kernel_str = {dir_kernelW, sizeof(dir_kernelW)};
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static const struct unicode_str dir_windows_str = {dir_windowsW, sizeof(dir_windowsW)};
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static const struct unicode_str dir_winstations_str = {dir_winstationsW, sizeof(dir_winstationsW)};
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/* symlinks */
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static const WCHAR link_dosdevW[] = {'D','o','s','D','e','v','i','c','e','s'};
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static const WCHAR link_globalW[] = {'G','l','o','b','a','l'};
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static const WCHAR link_localW[] = {'L','o','c','a','l'};
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static const WCHAR link_nulW[] = {'N','U','L'};
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static const WCHAR link_pipeW[] = {'P','I','P','E'};
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static const WCHAR link_mailslotW[] = {'M','A','I','L','S','L','O','T'};
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static const WCHAR link_0W[] = {'0'};
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static const WCHAR link_sessionW[] = {'S','e','s','s','i','o','n'};
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static const WCHAR link_sessionsW[] = {'\\','S','e','s','s','i','o','n','s'};
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static const struct unicode_str link_dosdev_str = {link_dosdevW, sizeof(link_dosdevW)};
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static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)};
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static const struct unicode_str link_local_str = {link_localW, sizeof(link_localW)};
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static const struct unicode_str link_nul_str = {link_nulW, sizeof(link_nulW)};
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static const struct unicode_str link_pipe_str = {link_pipeW, sizeof(link_pipeW)};
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static const struct unicode_str link_mailslot_str = {link_mailslotW, sizeof(link_mailslotW)};
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static const struct unicode_str link_0_str = {link_0W, sizeof(link_0W)};
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static const struct unicode_str link_session_str = {link_sessionW, sizeof(link_sessionW)};
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static const struct unicode_str link_sessions_str = {link_sessionsW, sizeof(link_sessionsW)};
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/* devices */
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static const WCHAR named_pipeW[] = {'N','a','m','e','d','P','i','p','e'};
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static const WCHAR mailslotW[] = {'M','a','i','l','S','l','o','t'};
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static const WCHAR nullW[] = {'N','u','l','l'};
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static const struct unicode_str named_pipe_str = {named_pipeW, sizeof(named_pipeW)};
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static const struct unicode_str mailslot_str = {mailslotW, sizeof(mailslotW)};
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static const struct unicode_str null_str = {nullW, sizeof(nullW)};
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/* events */
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static const WCHAR event_low_memW[] = {'L','o','w','M','e','m','o','r','y','C','o','n','d','i','t','i','o','n'};
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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'};
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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'};
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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'};
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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'};
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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'};
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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'};
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static const struct unicode_str kernel_events[] =
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{
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{ event_low_memW, sizeof(event_low_memW) },
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{ event_low_pagedW, sizeof(event_low_pagedW) },
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{ event_low_nonpgW, sizeof(event_low_nonpgW) },
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{ event_high_memW, sizeof(event_high_memW) },
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{ event_high_pagedW, sizeof(event_high_pagedW) },
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{ event_high_nonpgW, sizeof(event_high_nonpgW) }
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};
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static const struct unicode_str keyed_event_crit_sect_str = {keyed_event_crit_sectW, sizeof(keyed_event_crit_sectW)};
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struct directory *dir_driver, *dir_device, *dir_global, *dir_basenamed, *dir_sessions, *dir_kernel, *dir_windows, *dir_winstation;
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struct symlink *link_dosdev, *link_global1, *link_global2, *link_local, *link_nul, *link_pipe, *link_mailslot, *link_0, *link_session;
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struct keyed_event *keyed_event;
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unsigned int i;
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root_directory = create_directory( NULL, NULL, 0, HASH_SIZE, NULL );
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dir_driver = create_directory( root_directory, &dir_driver_str, 0, HASH_SIZE, NULL );
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dir_device = create_directory( root_directory, &dir_device_str, 0, HASH_SIZE, NULL );
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dir_objtype = create_directory( root_directory, &dir_objtype_str, 0, HASH_SIZE, NULL );
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dir_sessions = create_directory( root_directory, &dir_sessions_str, 0, HASH_SIZE, NULL );
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dir_kernel = create_directory( root_directory, &dir_kernel_str, 0, HASH_SIZE, NULL );
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dir_windows = create_directory( root_directory, &dir_windows_str, 0, HASH_SIZE, NULL );
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dir_winstation = create_directory( dir_windows, &dir_winstations_str, 0, HASH_SIZE, NULL );
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make_object_static( &root_directory->obj );
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make_object_static( &dir_driver->obj );
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make_object_static( &dir_objtype->obj );
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make_object_static( &dir_winstation->obj );
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dir_global = create_directory( NULL, &dir_global_str, 0, HASH_SIZE, NULL );
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/* use a larger hash table for this one since it can contain a lot of objects */
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dir_basenamed = create_directory( NULL, &dir_basenamed_str, 0, 37, NULL );
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/* devices */
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create_named_pipe_device( dir_device, &named_pipe_str );
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create_mailslot_device( dir_device, &mailslot_str );
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create_unix_device( dir_device, &null_str, "/dev/null" );
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/* symlinks */
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link_dosdev = create_symlink( root_directory, &link_dosdev_str, 0, &dir_global_str, NULL );
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link_global1 = create_symlink( dir_global, &link_global_str, 0, &dir_global_str, NULL );
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link_global2 = create_symlink( dir_basenamed, &link_global_str, 0, &dir_basenamed_str, NULL );
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link_local = create_symlink( dir_basenamed, &link_local_str, 0, &dir_basenamed_str, NULL );
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link_nul = create_symlink( dir_global, &link_nul_str, 0, &dir_null_str, NULL );
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link_pipe = create_symlink( dir_global, &link_pipe_str, 0, &dir_named_pipe_str, NULL );
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link_mailslot = create_symlink( dir_global, &link_mailslot_str, 0, &dir_mailslot_str, NULL );
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link_0 = create_symlink( dir_sessions, &link_0_str, 0, &dir_basenamed_str, NULL );
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link_session = create_symlink( dir_basenamed, &link_session_str, 0, &link_sessions_str, NULL );
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make_object_static( (struct object *)link_dosdev );
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make_object_static( (struct object *)link_global1 );
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make_object_static( (struct object *)link_global2 );
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make_object_static( (struct object *)link_local );
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make_object_static( (struct object *)link_nul );
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make_object_static( (struct object *)link_pipe );
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make_object_static( (struct object *)link_mailslot );
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make_object_static( (struct object *)link_0 );
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make_object_static( (struct object *)link_session );
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/* events */
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for (i = 0; i < sizeof(kernel_events)/sizeof(kernel_events[0]); i++)
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{
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struct event *event = create_event( dir_kernel, &kernel_events[i], 0, 1, 0, NULL );
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make_object_static( (struct object *)event );
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}
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keyed_event = create_keyed_event( dir_kernel, &keyed_event_crit_sect_str, 0, NULL );
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make_object_static( (struct object *)keyed_event );
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/* the objects hold references so we can release these directories */
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release_object( dir_global );
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release_object( dir_device );
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release_object( dir_basenamed );
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release_object( dir_sessions );
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release_object( dir_kernel );
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release_object( dir_windows );
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}
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/* create a directory object */
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DECL_HANDLER(create_directory)
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{
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struct unicode_str name;
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struct directory *dir, *root;
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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 = get_directory_obj( current->process, req->handle, DIRECTORY_QUERY );
|
|
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 );
|
|
}
|
|
}
|
|
|
|
/* unlink a named object */
|
|
DECL_HANDLER(unlink_object)
|
|
{
|
|
struct object *obj = get_handle_obj( current->process, req->handle, 0, NULL );
|
|
|
|
if (obj)
|
|
{
|
|
unlink_named_object( obj );
|
|
release_object( obj );
|
|
}
|
|
}
|
|
|
|
/* 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 );
|
|
}
|