1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/* $Id: plugin_cpuinfo.c 1079 2010-01-15 21:44:04Z volker $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/plugin_cpuinfo.c $
*
* plugin for /proc/cpuinfo parsing
*
* Copyright (C) 2003 Michael Reinelt <michael@reinelt.co.at>
* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* exported functions:
*
* int plugin_init_cpuinfo (void)
* adds functions to access /proc/cpuinfo
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "debug.h"
#include "plugin.h"
#include "hash.h"
#ifdef __MAC_OS_X_VERSION_10_3
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
static HASH CPUinfo;
static FILE *stream = NULL;
static int parse_cpuinfo(char *oid)
{
int age;
/* reread every second only */
age = hash_age(&CPUinfo, NULL);
if (age > 0 && age <= 1000)
return 0;
#ifndef __MAC_OS_X_VERSION_10_3
/* Linux Kernel, /proc-filesystem */
if (stream == NULL)
stream = fopen("/proc/cpuinfo", "r");
if (stream == NULL) {
error("fopen(/proc/cpuinfo) failed: %s", strerror(errno));
return -1;
}
rewind(stream);
while (!feof(stream)) {
char buffer[256];
char *c, *key, *val;
fgets(buffer, sizeof(buffer), stream);
c = strchr(buffer, ':');
if (c == NULL)
continue;
key = buffer;
val = c + 1;
/* strip leading blanks from key */
while (isspace(*key))
*key++ = '\0';
/* strip trailing blanks from key */
do
*c = '\0';
while (isspace(*--c));
/* strip leading blanks from value */
while (isspace(*val))
*val++ = '\0';
/* strip trailing blanks from value */
for (c = val; *c != '\0'; c++);
while (isspace(*--c))
*c = '\0';
/* add entry to hash table */
hash_put(&CPUinfo, key, val);
}
/* to avoid compiler unused warning */
oid = 0;
#else
/* MACH Kernel, MacOS X */
char val_ret[256];
int *val;
size_t val_len;
if (sysctlbyname(oid, NULL, &val_len, NULL, 0) != 0) {
error("Error %d by sysctl(%s): %s", errno, oid, strerror(errno));
return -1;
}
if (val_len > sizeof(val_ret)) {
error("Error: Result of sysctl(%s) too big (%zd > %zd)!", oid, val_len, sizeof(val_ret));
return -1;
}
sysctlbyname(oid, &val_ret, &val_len, NULL, 0);
if (val_len == sizeof(int)) {
/* we got an integer instead of a string */
val = (int *) val_ret;
snprintf(val_ret, sizeof(val_ret), "%d", *val);
}
hash_put(&CPUinfo, oid, val_ret);
#endif
return 0;
}
static void my_cpuinfo(RESULT * result, RESULT * arg1)
{
char *key, *val;
key = R2S(arg1);
if (parse_cpuinfo(key) < 0) {
SetResult(&result, R_STRING, "");
return;
}
val = hash_get(&CPUinfo, key, NULL);
if (val == NULL)
val = "";
SetResult(&result, R_STRING, val);
}
int plugin_init_cpuinfo(void)
{
hash_create(&CPUinfo);
AddFunction("cpuinfo", 1, my_cpuinfo);
return 0;
}
void plugin_exit_cpuinfo(void)
{
if (stream != NULL) {
fclose(stream);
stream = NULL;
}
hash_destroy(&CPUinfo);
}
|
