651d8393c8
(encode_regname): Ditto. (decode_regname): Ditto. (fhandler_registry::exists): Encode name before path compare. (fhandler_registry::fstat): Pass decoded name to win32 registry call. (fhandler_registry::readdir): Return encoded name to user. (fhandler_registry::open): Store decoded name into value_name. (open_key): Pass decoded name to win32 registry call.
788 lines
18 KiB
C++
788 lines
18 KiB
C++
/* fhandler_registry.cc: fhandler for /proc/registry virtual filesystem
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Copyright 2002, 2003, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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/* FIXME: Access permissions are ignored at the moment. */
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#include "winsup.h"
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#include <stdlib.h>
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#include "cygerrno.h"
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#include "security.h"
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#include "path.h"
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#include "fhandler.h"
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#include "dtable.h"
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#include "cygheap.h"
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#define _COMPILING_NEWLIB
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#include <dirent.h>
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/* If this bit is set in __d_position then we are enumerating values,
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* else sub-keys. keeping track of where we are is horribly messy
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* the bottom 16 bits are the absolute position and the top 15 bits
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* make up the value index if we are enuerating values.
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*/
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static const _off_t REG_ENUM_VALUES_MASK = 0x8000000;
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static const _off_t REG_POSITION_MASK = 0xffff;
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/* List of root keys in /proc/registry.
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* Possibly we should filter out those not relevant to the flavour of Windows
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* Cygwin is running on.
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*/
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static const char *registry_listing[] =
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{
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".",
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"..",
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"HKEY_CLASSES_ROOT",
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"HKEY_CURRENT_CONFIG",
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"HKEY_CURRENT_USER",
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"HKEY_LOCAL_MACHINE",
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"HKEY_USERS",
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"HKEY_PERFORMANCE_DATA", // NT/2000/XP
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NULL
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};
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static const HKEY registry_keys[] =
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{
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(HKEY) INVALID_HANDLE_VALUE,
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(HKEY) INVALID_HANDLE_VALUE,
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HKEY_CLASSES_ROOT,
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HKEY_CURRENT_CONFIG,
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HKEY_CURRENT_USER,
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HKEY_LOCAL_MACHINE,
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HKEY_USERS,
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HKEY_PERFORMANCE_DATA
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};
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static const int ROOT_KEY_COUNT = sizeof (registry_keys) / sizeof (HKEY);
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/* These get added to each subdirectory in /proc/registry.
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* If we wanted to implement writing, we could maybe add a '.writable' entry or
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* suchlike.
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*/
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static const char *special_dot_files[] =
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{
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".",
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"..",
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NULL
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};
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static const int SPECIAL_DOT_FILE_COUNT =
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(sizeof (special_dot_files) / sizeof (const char *)) - 1;
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/* Name given to default values */
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static const char *DEFAULT_VALUE_NAME = "@";
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static HKEY open_key (const char *name, REGSAM access, DWORD wow64, bool isValue);
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/* Return true if char must be encoded.
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*/
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static inline bool
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must_encode (char c)
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{
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return (isdirsep (c) || c == '%');
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}
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/* Encode special chars in registry key or value name.
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*/
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static int
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encode_regname (char * dst, const char * src)
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{
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int di = 0;
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for (int si = 0; src[si]; si++)
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{
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char c = src[si];
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if (must_encode (c) ||
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(c == '.' && si == 0 && (!src[1] || (src[1] == '.' && !src[2]))))
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{
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if (di + 3 >= NAME_MAX + 1)
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return ENAMETOOLONG;
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__small_sprintf (dst + di, "%%%02x", c);
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di += 3;
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}
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else
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dst[di++] = c;
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}
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dst[di] = 0;
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return 0;
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}
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/* Decode special chars in registry key or value name.
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*/
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static int
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decode_regname (char * dst, const char * src, int len = -1)
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{
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if (len < 0)
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len = strlen (src);
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int di = 0;
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for (int si = 0; si < len; si++)
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{
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char c = src[si];
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if (c == '%')
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{
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if (si + 2 >= len)
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return EINVAL;
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char s[] = {src[si+1], src[si+2], '\0'};
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char *p;
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c = strtoul (s, &p, 16);
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if (!(must_encode (c) ||
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(c == '.' && si == 0 && (len == 3 || (src[3] == '.' && len == 4)))))
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return EINVAL;
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dst[di++] = c;
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si += 2;
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}
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else
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dst[di++] = c;
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}
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dst[di] = 0;
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return 0;
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}
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/* Returns 0 if path doesn't exist, >0 if path is a directory,
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* <0 if path is a file.
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*
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* We open the last key but one and then enum it's sub-keys and values to see if the
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* final component is there. This gets round the problem of not having security access
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* to the final key in the path.
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*/
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int
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fhandler_registry::exists ()
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{
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int file_type = 0, index = 0, pathlen;
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DWORD buf_size = NAME_MAX + 1;
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LONG error;
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char buf[buf_size];
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const char *file;
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HKEY hKey = (HKEY) INVALID_HANDLE_VALUE;
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const char *path = get_name ();
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debug_printf ("exists (%s)", path);
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path += proc_len + prefix_len + 1;
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if (*path)
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path++;
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else
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{
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file_type = 2;
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goto out;
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}
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pathlen = strlen (path);
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file = path + pathlen - 1;
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if (isdirsep (*file) && pathlen > 1)
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file--;
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while (!isdirsep (*file))
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file--;
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file++;
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if (file == path)
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{
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for (int i = 0; registry_listing[i]; i++)
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if (path_prefix_p (registry_listing[i], path,
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strlen (registry_listing[i]), true))
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{
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file_type = 1;
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goto out;
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}
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goto out;
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}
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hKey = open_key (path, KEY_READ, wow64, false);
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if (hKey != (HKEY) INVALID_HANDLE_VALUE)
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file_type = 1;
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else
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{
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hKey = open_key (path, KEY_READ, wow64, true);
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if (hKey == (HKEY) INVALID_HANDLE_VALUE)
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return 0;
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while (ERROR_SUCCESS ==
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(error = RegEnumKeyEx (hKey, index++, buf, &buf_size, NULL, NULL,
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NULL, NULL))
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|| (error == ERROR_MORE_DATA))
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{
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if (strcasematch (buf, file))
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{
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file_type = 1;
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goto out;
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}
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buf_size = NAME_MAX + 1;
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}
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if (error != ERROR_NO_MORE_ITEMS)
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{
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seterrno_from_win_error (__FILE__, __LINE__, error);
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goto out;
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}
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index = 0;
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buf_size = NAME_MAX + 1;
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while (ERROR_SUCCESS ==
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(error = RegEnumValue (hKey, index++, buf, &buf_size, NULL, NULL,
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NULL, NULL))
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|| (error == ERROR_MORE_DATA))
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{
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char enc_buf[NAME_MAX + 1];
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if ( (buf[0] == '\0' && strcasematch (file, DEFAULT_VALUE_NAME))
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|| (!encode_regname (enc_buf, buf) && strcasematch (enc_buf, file)))
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{
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file_type = -1;
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goto out;
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}
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buf_size = NAME_MAX + 1;
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}
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if (error != ERROR_NO_MORE_ITEMS)
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{
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seterrno_from_win_error (__FILE__, __LINE__, error);
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goto out;
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}
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}
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out:
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if (hKey != (HKEY) INVALID_HANDLE_VALUE)
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RegCloseKey (hKey);
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return file_type;
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}
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void
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fhandler_registry::set_name (path_conv &in_pc)
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{
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if (strncasematch (in_pc.normalized_path, "/proc/registry32", 16))
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{
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wow64 = KEY_WOW64_32KEY;
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prefix_len += 2;
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}
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else if (strncasematch (in_pc.normalized_path, "/proc/registry64", 16))
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{
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wow64 = KEY_WOW64_64KEY;
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prefix_len += 2;
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}
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fhandler_base::set_name (in_pc);
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}
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fhandler_registry::fhandler_registry ():
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fhandler_proc ()
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{
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wow64 = 0;
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prefix_len = sizeof ("registry") - 1;
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}
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int
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fhandler_registry::fstat (struct __stat64 *buf)
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{
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fhandler_base::fstat (buf);
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buf->st_mode &= ~_IFMT & NO_W;
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int file_type = exists ();
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switch (file_type)
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{
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case 0:
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set_errno (ENOENT);
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return -1;
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case 1:
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buf->st_mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
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break;
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case 2:
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buf->st_mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
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buf->st_nlink = ROOT_KEY_COUNT;
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break;
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default:
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case -1:
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buf->st_mode |= S_IFREG;
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buf->st_mode &= NO_X;
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break;
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}
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if (file_type != 0 && file_type != 2)
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{
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HKEY hKey;
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const char *path = get_name () + proc_len + prefix_len + 2;
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hKey =
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open_key (path, STANDARD_RIGHTS_READ | KEY_QUERY_VALUE, wow64,
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(file_type < 0) ? true : false);
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if (hKey != (HKEY) INVALID_HANDLE_VALUE)
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{
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FILETIME ftLastWriteTime;
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DWORD subkey_count;
|
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if (ERROR_SUCCESS ==
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RegQueryInfoKey (hKey, NULL, NULL, NULL, &subkey_count, NULL,
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NULL, NULL, NULL, NULL, NULL,
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&ftLastWriteTime))
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{
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to_timestruc_t (&ftLastWriteTime, &buf->st_mtim);
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buf->st_ctim = buf->st_birthtim = buf->st_mtim;
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time_as_timestruc_t (&buf->st_atim);
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if (file_type > 0)
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buf->st_nlink = subkey_count + 2;
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else
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{
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int pathlen = strlen (path);
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const char *value_name = path + pathlen - 1;
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if (isdirsep (*value_name) && pathlen > 1)
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value_name--;
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while (!isdirsep (*value_name))
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value_name--;
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value_name++;
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char dec_value_name[NAME_MAX + 1];
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DWORD dwSize;
|
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if (!decode_regname (dec_value_name, value_name) &&
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ERROR_SUCCESS ==
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RegQueryValueEx (hKey, dec_value_name, NULL, NULL, NULL,
|
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&dwSize))
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buf->st_size = dwSize;
|
|
}
|
|
__uid32_t uid;
|
|
__gid32_t gid;
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if (get_reg_attribute (hKey, &buf->st_mode, &uid, &gid) == 0)
|
|
{
|
|
buf->st_uid = uid;
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|
buf->st_gid = gid;
|
|
buf->st_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
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if (file_type > 0)
|
|
buf->st_mode |= S_IFDIR;
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else
|
|
buf->st_mode &= NO_X;
|
|
}
|
|
}
|
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RegCloseKey (hKey);
|
|
}
|
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else
|
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{
|
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/* Here's the problem: If we can't open the key, we don't know
|
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nothing at all about the key/value. It's only clear that
|
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the current user has no read access. At this point it's
|
|
rather unlikely that the user has write or execute access
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and it's also rather unlikely that the user is the owner.
|
|
Therefore it's probably most safe to assume unknown ownership
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and no permissions for nobody. */
|
|
buf->st_uid = UNKNOWN_UID;
|
|
buf->st_gid = UNKNOWN_GID;
|
|
buf->st_mode &= ~0777;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
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|
fhandler_registry::readdir (DIR *dir, dirent *de)
|
|
{
|
|
DWORD buf_size = NAME_MAX + 1;
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char buf[buf_size];
|
|
HANDLE handle;
|
|
const char *path = dir->__d_dirname + proc_len + 1 + prefix_len;
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|
LONG error;
|
|
int res = ENMFILE;
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|
|
|
dir->__flags |= dirent_saw_dot | dirent_saw_dot_dot;
|
|
if (*path == 0)
|
|
{
|
|
if (dir->__d_position >= ROOT_KEY_COUNT)
|
|
goto out;
|
|
strcpy (de->d_name, registry_listing[dir->__d_position++]);
|
|
res = 0;
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|
goto out;
|
|
}
|
|
if (dir->__handle == INVALID_HANDLE_VALUE && dir->__d_position == 0)
|
|
{
|
|
handle = open_key (path + 1, KEY_READ, wow64, false);
|
|
dir->__handle = handle;
|
|
}
|
|
if (dir->__handle == INVALID_HANDLE_VALUE)
|
|
goto out;
|
|
if (dir->__d_position < SPECIAL_DOT_FILE_COUNT)
|
|
{
|
|
strcpy (de->d_name, special_dot_files[dir->__d_position++]);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
retry:
|
|
if (dir->__d_position & REG_ENUM_VALUES_MASK)
|
|
/* For the moment, the type of key is ignored here. when write access is added,
|
|
* maybe add an extension for the type of each value?
|
|
*/
|
|
error = RegEnumValue ((HKEY) dir->__handle,
|
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(dir->__d_position & ~REG_ENUM_VALUES_MASK) >> 16,
|
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buf, &buf_size, NULL, NULL, NULL, NULL);
|
|
else
|
|
error =
|
|
RegEnumKeyEx ((HKEY) dir->__handle, dir->__d_position -
|
|
SPECIAL_DOT_FILE_COUNT, buf, &buf_size, NULL, NULL, NULL,
|
|
NULL);
|
|
if (error == ERROR_NO_MORE_ITEMS
|
|
&& (dir->__d_position & REG_ENUM_VALUES_MASK) == 0)
|
|
{
|
|
/* If we're finished with sub-keys, start on values under this key. */
|
|
dir->__d_position |= REG_ENUM_VALUES_MASK;
|
|
buf_size = NAME_MAX + 1;
|
|
goto retry;
|
|
}
|
|
if (error != ERROR_SUCCESS && error != ERROR_MORE_DATA)
|
|
{
|
|
RegCloseKey ((HKEY) dir->__handle);
|
|
dir->__handle = INVALID_HANDLE_VALUE;
|
|
if (error != ERROR_NO_MORE_ITEMS)
|
|
seterrno_from_win_error (__FILE__, __LINE__, error);
|
|
goto out;
|
|
}
|
|
|
|
/* We get here if `buf' contains valid data. */
|
|
if (*buf == 0)
|
|
strcpy (de->d_name, DEFAULT_VALUE_NAME);
|
|
else if (encode_regname (de->d_name, buf))
|
|
goto retry;
|
|
|
|
dir->__d_position++;
|
|
if (dir->__d_position & REG_ENUM_VALUES_MASK)
|
|
dir->__d_position += 0x10000;
|
|
res = 0;
|
|
out:
|
|
syscall_printf ("%d = readdir (%p, %p)", res, dir, de);
|
|
return res;
|
|
}
|
|
|
|
_off64_t
|
|
fhandler_registry::telldir (DIR * dir)
|
|
{
|
|
return dir->__d_position & REG_POSITION_MASK;
|
|
}
|
|
|
|
void
|
|
fhandler_registry::seekdir (DIR * dir, _off64_t loc)
|
|
{
|
|
/* Unfortunately cannot simply set __d_position due to transition from sub-keys to
|
|
* values.
|
|
*/
|
|
rewinddir (dir);
|
|
while (loc > (dir->__d_position & REG_POSITION_MASK))
|
|
if (!readdir (dir, dir->__d_dirent))
|
|
break;
|
|
}
|
|
|
|
void
|
|
fhandler_registry::rewinddir (DIR * dir)
|
|
{
|
|
if (dir->__handle != INVALID_HANDLE_VALUE)
|
|
{
|
|
RegCloseKey ((HKEY) dir->__handle);
|
|
dir->__handle = INVALID_HANDLE_VALUE;
|
|
}
|
|
dir->__d_position = 0;
|
|
dir->__flags = dirent_saw_dot | dirent_saw_dot_dot;
|
|
}
|
|
|
|
int
|
|
fhandler_registry::closedir (DIR * dir)
|
|
{
|
|
int res = 0;
|
|
if (dir->__handle != INVALID_HANDLE_VALUE &&
|
|
RegCloseKey ((HKEY) dir->__handle) != ERROR_SUCCESS)
|
|
{
|
|
__seterrno ();
|
|
res = -1;
|
|
}
|
|
syscall_printf ("%d = closedir (%p)", res, dir);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fhandler_registry::open (int flags, mode_t mode)
|
|
{
|
|
int pathlen;
|
|
const char *file;
|
|
HKEY handle;
|
|
|
|
int res = fhandler_virtual::open (flags, mode);
|
|
if (!res)
|
|
goto out;
|
|
|
|
const char *path;
|
|
path = get_name () + proc_len + 1 + prefix_len;
|
|
if (!*path)
|
|
{
|
|
if ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
|
|
{
|
|
set_errno (EEXIST);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
else if (flags & O_WRONLY)
|
|
{
|
|
set_errno (EISDIR);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
flags |= O_DIROPEN;
|
|
goto success;
|
|
}
|
|
}
|
|
path++;
|
|
pathlen = strlen (path);
|
|
file = path + pathlen - 1;
|
|
if (isdirsep (*file) && pathlen > 1)
|
|
file--;
|
|
while (!isdirsep (*file))
|
|
file--;
|
|
file++;
|
|
|
|
if (file == path)
|
|
{
|
|
for (int i = 0; registry_listing[i]; i++)
|
|
if (path_prefix_p (registry_listing[i], path,
|
|
strlen (registry_listing[i]), true))
|
|
{
|
|
if ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
|
|
{
|
|
set_errno (EEXIST);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
else if (flags & O_WRONLY)
|
|
{
|
|
set_errno (EISDIR);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
set_io_handle (registry_keys[i]);
|
|
flags |= O_DIROPEN;
|
|
goto success;
|
|
}
|
|
}
|
|
|
|
if (flags & O_CREAT)
|
|
{
|
|
set_errno (EROFS);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
set_errno (ENOENT);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (flags & O_WRONLY)
|
|
{
|
|
set_errno (EROFS);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
|
|
char dec_file[NAME_MAX + 1];
|
|
if (decode_regname (dec_file, file))
|
|
{
|
|
set_errno (EINVAL);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
|
|
handle = open_key (path, KEY_READ, wow64, false);
|
|
if (handle == (HKEY) INVALID_HANDLE_VALUE)
|
|
{
|
|
handle = open_key (path, KEY_READ, wow64, true);
|
|
if (handle == (HKEY) INVALID_HANDLE_VALUE)
|
|
{
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
else
|
|
flags |= O_DIROPEN;
|
|
|
|
set_io_handle (handle);
|
|
|
|
if (strcasematch (dec_file, DEFAULT_VALUE_NAME))
|
|
value_name = cstrdup ("");
|
|
else
|
|
value_name = cstrdup (dec_file);
|
|
|
|
if (!(flags & O_DIROPEN) && !fill_filebuf ())
|
|
{
|
|
RegCloseKey (handle);
|
|
res = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (flags & O_APPEND)
|
|
position = filesize;
|
|
else
|
|
position = 0;
|
|
|
|
success:
|
|
res = 1;
|
|
set_flags ((flags & ~O_TEXT) | O_BINARY);
|
|
set_open_status ();
|
|
out:
|
|
syscall_printf ("%d = fhandler_registry::open (%p, %d)", res, flags, mode);
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_registry::close ()
|
|
{
|
|
int res = fhandler_virtual::close ();
|
|
if (res != 0)
|
|
return res;
|
|
HKEY handle = (HKEY) get_handle ();
|
|
if (handle != (HKEY) INVALID_HANDLE_VALUE)
|
|
{
|
|
if (RegCloseKey (handle) != ERROR_SUCCESS)
|
|
{
|
|
__seterrno ();
|
|
res = -1;
|
|
}
|
|
}
|
|
if (!hExeced && value_name)
|
|
{
|
|
cfree (value_name);
|
|
value_name = NULL;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
bool
|
|
fhandler_registry::fill_filebuf ()
|
|
{
|
|
DWORD type, size;
|
|
LONG error;
|
|
HKEY handle = (HKEY) get_handle ();
|
|
if (handle != HKEY_PERFORMANCE_DATA)
|
|
{
|
|
error = RegQueryValueEx (handle, value_name, NULL, &type, NULL, &size);
|
|
if (error != ERROR_SUCCESS)
|
|
{
|
|
if (error != ERROR_FILE_NOT_FOUND)
|
|
{
|
|
seterrno_from_win_error (__FILE__, __LINE__, error);
|
|
return false;
|
|
}
|
|
goto value_not_found;
|
|
}
|
|
bufalloc = size;
|
|
filebuf = (char *) cmalloc_abort (HEAP_BUF, bufalloc);
|
|
error =
|
|
RegQueryValueEx (handle, value_name, NULL, NULL, (BYTE *) filebuf,
|
|
&size);
|
|
if (error != ERROR_SUCCESS)
|
|
{
|
|
seterrno_from_win_error (__FILE__, __LINE__, error);
|
|
return true;
|
|
}
|
|
filesize = size;
|
|
}
|
|
else
|
|
{
|
|
bufalloc = 0;
|
|
do
|
|
{
|
|
bufalloc += 1000;
|
|
filebuf = (char *) crealloc_abort (filebuf, bufalloc);
|
|
size = bufalloc;
|
|
error = RegQueryValueEx (handle, value_name, NULL, &type,
|
|
(BYTE *) filebuf, &size);
|
|
if (error != ERROR_SUCCESS && error != ERROR_MORE_DATA)
|
|
{
|
|
if (error != ERROR_FILE_NOT_FOUND)
|
|
{
|
|
seterrno_from_win_error (__FILE__, __LINE__, error);
|
|
return true;
|
|
}
|
|
goto value_not_found;
|
|
}
|
|
}
|
|
while (error == ERROR_MORE_DATA);
|
|
filesize = size;
|
|
}
|
|
return true;
|
|
value_not_found:
|
|
DWORD buf_size = NAME_MAX + 1;
|
|
char buf[buf_size];
|
|
int index = 0;
|
|
while (ERROR_SUCCESS ==
|
|
(error = RegEnumKeyEx (handle, index++, buf, &buf_size, NULL, NULL,
|
|
NULL, NULL)) || (error == ERROR_MORE_DATA))
|
|
{
|
|
if (strcasematch (buf, value_name))
|
|
{
|
|
set_errno (EISDIR);
|
|
return false;
|
|
}
|
|
buf_size = NAME_MAX + 1;
|
|
}
|
|
if (error != ERROR_NO_MORE_ITEMS)
|
|
{
|
|
seterrno_from_win_error (__FILE__, __LINE__, error);
|
|
return false;
|
|
}
|
|
set_errno (ENOENT);
|
|
return false;
|
|
}
|
|
|
|
/* Auxillary member function to open registry keys. */
|
|
static HKEY
|
|
open_key (const char *name, REGSAM access, DWORD wow64, bool isValue)
|
|
{
|
|
HKEY hKey = (HKEY) INVALID_HANDLE_VALUE;
|
|
HKEY hParentKey = (HKEY) INVALID_HANDLE_VALUE;
|
|
bool parentOpened = false;
|
|
char component[NAME_MAX + 1];
|
|
|
|
while (*name)
|
|
{
|
|
const char *anchor = name;
|
|
while (*name && !isdirsep (*name))
|
|
name++;
|
|
if (decode_regname (component, anchor, name - anchor))
|
|
{
|
|
set_errno (EINVAL);
|
|
if (parentOpened)
|
|
RegCloseKey (hParentKey);
|
|
hKey = (HKEY) INVALID_HANDLE_VALUE;
|
|
break;
|
|
}
|
|
if (*name)
|
|
name++;
|
|
if (*name == 0 && isValue == true)
|
|
goto out;
|
|
|
|
if (hParentKey != (HKEY) INVALID_HANDLE_VALUE)
|
|
{
|
|
REGSAM effective_access = KEY_READ;
|
|
if ((strchr (name, '/') == NULL && isValue == true) || *name == 0)
|
|
effective_access = access;
|
|
LONG error = RegOpenKeyEx (hParentKey, component, 0,
|
|
effective_access | wow64, &hKey);
|
|
if (error == ERROR_ACCESS_DENIED) /* Try opening with backup intent */
|
|
error = RegCreateKeyEx (hParentKey, component, 0, NULL,
|
|
REG_OPTION_BACKUP_RESTORE,
|
|
effective_access | wow64, NULL,
|
|
&hKey, NULL);
|
|
if (error != ERROR_SUCCESS)
|
|
{
|
|
hKey = (HKEY) INVALID_HANDLE_VALUE;
|
|
seterrno_from_win_error (__FILE__, __LINE__, error);
|
|
return hKey;
|
|
}
|
|
if (parentOpened)
|
|
RegCloseKey (hParentKey);
|
|
hParentKey = hKey;
|
|
parentOpened = true;
|
|
}
|
|
else
|
|
{
|
|
for (int i = 0; registry_listing[i]; i++)
|
|
if (strcasematch (component, registry_listing[i]))
|
|
hKey = registry_keys[i];
|
|
if (hKey == (HKEY) INVALID_HANDLE_VALUE)
|
|
return hKey;
|
|
hParentKey = hKey;
|
|
}
|
|
}
|
|
out:
|
|
return hKey;
|
|
}
|