src/libcaptive/cm/rtlfunc.c

   1 /* $Id$
   2  * reactos registry handling functions emulation of libcaptive
   3  * Copyright (C) 2002 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 "reactos/ddk/kefuncs.h"        /* self */
  23 #include <glib/gmessages.h>
  24 #include "captive/unicode.h"
  25 #include "captive/macros.h"
  26
  27
  28 /**
  29  * RtlQueryRegistryValues:
  30  * @RelativeTo: Basedir type constant of relative @Path; ignored by libcaptive.
  31  * @Path: String path or handle to retrieve; ignored by libcaptive.
  32  * @QueryTable: Table of entries to retrieve; ignored by libcaptive.
  33  * %NULL value is forbidden.
  34  * @Context: Userdata to pass to QueryRoutine() (of @QueryTable); ignored by libcaptive.
  35  * @Environment: Environment variable to use for key expansion; optional; ignored by libcaptive.
  36  *
  37  * Retrieves specified key from the system registry database.
  38  * libcaptive currently always returns %STATUS_OBJECT_NAME_NOT_FOUND
  39  * except #ULONG value 1 for the key "\captive\filesystem\Parameters\WritingSupport"
  40  * (for ext2fsd.sys V0.10A).
  41  *
  42  * Returns: %STATUS_OBJECT_NAME_NOT_FOUND or %STATUS_SUCCESS if some result returned.
  43  */
  44 NTSTATUS RtlQueryRegistryValues
  45                 (IN ULONG RelativeTo,IN PCWSTR Path,IN PRTL_QUERY_REGISTRY_TABLE QueryTable,IN PVOID Context,IN PVOID Environment)
  46 {
  47 const WCHAR *Path__captive_filesystem_Parameters_ucs2=
  48                 captive_utf8_to_UnicodeString_alloca("\\captive\\filesystem\\Parameters")->Buffer;
  49 const WCHAR *QueryTable_WritingSupport_Name_ucs2=
  50                 captive_utf8_to_UnicodeString_alloca("WritingSupport")->Buffer;
  51 const gchar *RelativeTo_table[]={
  52                 "RTL_REGISTRY_ABSOLUTE",
  53                 "RTL_REGISTRY_SERVICES",
  54                 "RTL_REGISTRY_CONTROL",
  55                 "RTL_REGISTRY_WINDOWS_NT",
  56                 "RTL_REGISTRY_DEVICEMAP",
  57                 "RTL_REGISTRY_USER",
  58                 "RTL_REGISTRY_ENUM",
  59                 };
  60 UNICODE_STRING Path_UnicodeString;
  61
  62         g_return_val_if_fail(Path!=NULL,STATUS_INVALID_PARAMETER);
  63         g_return_val_if_fail(QueryTable!=NULL,STATUS_INVALID_PARAMETER);
  64
  65         Path_UnicodeString.Length=captive_ucs2_strlen(Path)*sizeof(*Path_UnicodeString.Buffer);
  66         Path_UnicodeString.MaximumLength=Path_UnicodeString.Length+sizeof(*Path_UnicodeString.Buffer);
  67         Path_UnicodeString.Buffer=(/* de-const */ PWSTR)Path;
  68         g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"%s: RelativeTo=%s,Path=%s",G_STRLOC,
  69                         (RelativeTo>=0 && RelativeTo<G_N_ELEMENTS(RelativeTo_table)
  70                                         ? RelativeTo_table[RelativeTo] : captive_printf_alloca("%lu",(unsigned long)RelativeTo)),
  71                                         captive_UnicodeString_to_utf8_alloca(&Path_UnicodeString));
  72
  73         if (RelativeTo==RTL_REGISTRY_ABSOLUTE
  74                         && captive_ucs2_compare(Path,Path__captive_filesystem_Parameters_ucs2)
  75                         && QueryTable[0].Name!=NULL
  76                                         && captive_ucs2_compare(QueryTable[0].Name,QueryTable_WritingSupport_Name_ucs2)
  77                         && QueryTable[0].Flags==(RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_REQUIRED)
  78                         && QueryTable[0].EntryContext!=NULL
  79                         && QueryTable[1].Name==NULL) {
  80                 *(ULONG *)QueryTable[0].EntryContext=1; /* => 'EXT2_SUPPORT_WRITING' */
  81                 return STATUS_SUCCESS;
  82                 }
  83
  84         return STATUS_OBJECT_NAME_NOT_FOUND;
  85 }