s3:registry: rename reg_util.{c,h} to reg_util_internal.{c,h}
[amitay/samba.git] / 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 #include "reg_util_internal.h"
30 #include "reg_perfcount.h"
31
32 #undef DBGC_CLASS
33 #define DBGC_CLASS DBGC_REGISTRY
34
35 extern struct registry_ops regdb_ops;
36
37 #define KEY_PERFLIB_NORM        "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB"
38 #define KEY_PERFLIB_009_NORM    "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB/009"
39
40 static int perflib_params(struct regval_ctr *regvals)
41 {
42         int base_index = -1;
43         int last_counter = -1;
44         int last_help = -1;
45         int version = 0x00010001;
46         
47         base_index = reg_perfcount_get_base_index();
48         regval_ctr_addvalue(regvals, "Base Index", REG_DWORD, (uint8_t *)&base_index, sizeof(base_index));
49         last_counter = reg_perfcount_get_last_counter(base_index);
50         regval_ctr_addvalue(regvals, "Last Counter", REG_DWORD, (uint8_t *)&last_counter, sizeof(last_counter));
51         last_help = reg_perfcount_get_last_help(last_counter);
52         regval_ctr_addvalue(regvals, "Last Help", REG_DWORD, (uint8_t *)&last_help, sizeof(last_help));
53         regval_ctr_addvalue(regvals, "Version", REG_DWORD, (uint8_t *)&version, sizeof(version));
54
55         return regval_ctr_numvals( regvals );
56 }
57
58 static int perflib_009_params(struct regval_ctr *regvals)
59 {
60         int base_index;
61         int buffer_size;
62         char *buffer = NULL;
63
64         base_index = reg_perfcount_get_base_index();
65         buffer_size = reg_perfcount_get_counter_names(base_index, &buffer);
66         regval_ctr_addvalue(regvals, "Counter", REG_MULTI_SZ, (uint8_t *)buffer, buffer_size);
67         if(buffer_size > 0)
68                 SAFE_FREE(buffer);
69         buffer_size = reg_perfcount_get_counter_help(base_index, &buffer);
70         regval_ctr_addvalue(regvals, "Help", REG_MULTI_SZ, (uint8_t *)buffer, buffer_size);
71         if(buffer_size > 0)
72                 SAFE_FREE(buffer);
73         
74         return regval_ctr_numvals( regvals );
75 }
76
77 static int perflib_fetch_values(const char *key, struct regval_ctr *regvals)
78 {
79         char *path = NULL;
80         TALLOC_CTX *ctx = talloc_tos();
81
82         path = talloc_strdup(ctx, key);
83         if (path == NULL) {
84                 return -1;
85         }
86         path = normalize_reg_path(ctx, path);
87         if (path == NULL) {
88                 return -1;
89         }
90
91         if (strncmp(path, KEY_PERFLIB_NORM, strlen(path)) == 0) {
92                 return perflib_params(regvals);
93         } else if (strncmp(path, KEY_PERFLIB_009_NORM, strlen(path)) == 0) {
94                 return perflib_009_params(regvals);
95         } else {
96                 return 0;
97         }
98 }
99
100 static int perflib_fetch_subkeys(const char *key,
101                                  struct regsubkey_ctr *subkey_ctr)
102 {
103         return regdb_ops.fetch_subkeys(key, subkey_ctr);
104 }
105
106 struct registry_ops perflib_reg_ops = {
107         .fetch_values = perflib_fetch_values,
108         .fetch_subkeys = perflib_fetch_subkeys,
109 };