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
  29 #undef DBGC_CLASS
  30 #define DBGC_CLASS DBGC_REGISTRY
  31
  32 extern REGISTRY_OPS regdb_ops;
  33
  34 #define KEY_PERFLIB_NORM        "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB"
  35 #define KEY_PERFLIB_009_NORM    "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB/009"
  36
  37 static int perflib_params( REGVAL_CTR *regvals )
  38 {
  39         int base_index = -1;
  40         int last_counter = -1;
  41         int last_help = -1;
  42         int version = 0x00010001;
  43
  44         base_index = reg_perfcount_get_base_index();
  45         regval_ctr_addvalue(regvals, "Base Index", REG_DWORD, (char *)&base_index, sizeof(base_index));
  46         last_counter = reg_perfcount_get_last_counter(base_index);
  47         regval_ctr_addvalue(regvals, "Last Counter", REG_DWORD, (char *)&last_counter, sizeof(last_counter));
  48         last_help = reg_perfcount_get_last_help(last_counter);
  49         regval_ctr_addvalue(regvals, "Last Help", REG_DWORD, (char *)&last_help, sizeof(last_help));
  50         regval_ctr_addvalue(regvals, "Version", REG_DWORD, (char *)&version, sizeof(version));
  51
  52         return regval_ctr_numvals( regvals );
  53 }
  54
  55 static int perflib_009_params( REGVAL_CTR *regvals )
  56 {
  57         int base_index;
  58         int buffer_size;
  59         char *buffer = NULL;
  60
  61         base_index = reg_perfcount_get_base_index();
  62         buffer_size = reg_perfcount_get_counter_names(base_index, &buffer);
  63         regval_ctr_addvalue(regvals, "Counter", REG_MULTI_SZ, buffer, buffer_size);
  64         if(buffer_size > 0)
  65                 SAFE_FREE(buffer);
  66         buffer_size = reg_perfcount_get_counter_help(base_index, &buffer);
  67         regval_ctr_addvalue(regvals, "Help", REG_MULTI_SZ, buffer, buffer_size);
  68         if(buffer_size > 0)
  69                 SAFE_FREE(buffer);
  70
  71         return regval_ctr_numvals( regvals );
  72 }
  73
  74 static int perflib_fetch_values(const char *key, REGVAL_CTR *regvals)
  75 {
  76         char *path = NULL;
  77         TALLOC_CTX *ctx = talloc_tos();
  78
  79         path = talloc_strdup(ctx, key);
  80         if (path == NULL) {
  81                 return -1;
  82         }
  83         path = normalize_reg_path(ctx, path);
  84         if (path == NULL) {
  85                 return -1;
  86         }
  87
  88         if (strncmp(path, KEY_PERFLIB_NORM, strlen(path)) == 0) {
  89                 return perflib_params(regvals);
  90         } else if (strncmp(path, KEY_PERFLIB_009_NORM, strlen(path)) == 0) {
  91                 return perflib_009_params(regvals);
  92         } else {
  93                 return 0;
  94         }
  95 }
  96
  97 static int perflib_fetch_subkeys(const char *key,
  98                                          REGSUBKEY_CTR *subkey_ctr)
  99 {
 100         return regdb_ops.fetch_subkeys(key, subkey_ctr);
 101 }
 102
 103 REGISTRY_OPS perflib_reg_ops = {
 104         .fetch_values = perflib_fetch_values,
 105         .fetch_subkeys = perflib_fetch_subkeys,
 106 };