source3/registry/reg_backend_perflib.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer
   4  *  Copyright (C) Gerald Carter     2002-2005
   5  *  Copyright (C) Michael Adam      2008
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 /*
  22  * perflib registry backend.
  23  *
  24  * This is a virtual overlay, dynamically presenting perflib values.
  25  */
  26
  27 #include "includes.h"
  28 #include "registry.h"
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_REGISTRY
  32
  33 extern struct registry_ops regdb_ops;
  34
  35 #define KEY_PERFLIB_NORM        "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB"
  36 #define KEY_PERFLIB_009_NORM    "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB/009"
  37
  38 static int perflib_params(struct regval_ctr *regvals)
  39 {
  40         int base_index = -1;
  41         int last_counter = -1;
  42         int last_help = -1;
  43         int version = 0x00010001;
  44
  45         base_index = reg_perfcount_get_base_index();
  46         regval_ctr_addvalue(regvals, "Base Index", REG_DWORD, (char *)&base_index, sizeof(base_index));
  47         last_counter = reg_perfcount_get_last_counter(base_index);
  48         regval_ctr_addvalue(regvals, "Last Counter", REG_DWORD, (char *)&last_counter, sizeof(last_counter));
  49         last_help = reg_perfcount_get_last_help(last_counter);
  50         regval_ctr_addvalue(regvals, "Last Help", REG_DWORD, (char *)&last_help, sizeof(last_help));
  51         regval_ctr_addvalue(regvals, "Version", REG_DWORD, (char *)&version, sizeof(version));
  52
  53         return regval_ctr_numvals( regvals );
  54 }
  55
  56 static int perflib_009_params(struct regval_ctr *regvals)
  57 {
  58         int base_index;
  59         int buffer_size;
  60         char *buffer = NULL;
  61
  62         base_index = reg_perfcount_get_base_index();
  63         buffer_size = reg_perfcount_get_counter_names(base_index, &buffer);
  64         regval_ctr_addvalue(regvals, "Counter", REG_MULTI_SZ, buffer, buffer_size);
  65         if(buffer_size > 0)
  66                 SAFE_FREE(buffer);
  67         buffer_size = reg_perfcount_get_counter_help(base_index, &buffer);
  68         regval_ctr_addvalue(regvals, "Help", REG_MULTI_SZ, buffer, buffer_size);
  69         if(buffer_size > 0)
  70                 SAFE_FREE(buffer);
  71
  72         return regval_ctr_numvals( regvals );
  73 }
  74
  75 static int perflib_fetch_values(const char *key, struct regval_ctr *regvals)
  76 {
  77         char *path = NULL;
  78         TALLOC_CTX *ctx = talloc_tos();
  79
  80         path = talloc_strdup(ctx, key);
  81         if (path == NULL) {
  82                 return -1;
  83         }
  84         path = normalize_reg_path(ctx, path);
  85         if (path == NULL) {
  86                 return -1;
  87         }
  88
  89         if (strncmp(path, KEY_PERFLIB_NORM, strlen(path)) == 0) {
  90                 return perflib_params(regvals);
  91         } else if (strncmp(path, KEY_PERFLIB_009_NORM, strlen(path)) == 0) {
  92                 return perflib_009_params(regvals);
  93         } else {
  94                 return 0;
  95         }
  96 }
  97
  98 static int perflib_fetch_subkeys(const char *key,
  99                                  struct regsubkey_ctr *subkey_ctr)
 100 {
 101         return regdb_ops.fetch_subkeys(key, subkey_ctr);
 102 }
 103
 104 struct registry_ops perflib_reg_ops = {
 105         .fetch_values = perflib_fetch_values,
 106         .fetch_subkeys = perflib_fetch_subkeys,
 107 };