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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
#include <stdio.h>
#include <stdlib.h> /* atol, strtol */
#include <string.h> /* strncmp, strstr,strchr */
#include <ctype.h> /* isdigit */
#include <sys/stat.h> /* stat */
#include <unistd.h> /* stat */
#include <sys/sysinfo.h> /* sysinfo() */
#include "../sysinfo.h"
#include "../include/uname.h"
/* This code modeled on the linux sh-utils 1.16 uptime.c code */
int get_uptime (void) {
FILE *fff;
float uptime_seconds;
int result;
fff=fopen("/proc/uptime","r");
if (fff!=NULL) {
result=fscanf(fff,"%f",&uptime_seconds);
fclose (fff);
}
return uptime_seconds;
}
/* Based on code contributed by Anders Rundegren <anders@rundegren.com> */
void get_load_average(float *load_1,float *load_5,float *load_15) {
FILE *fff;
int result;
fff=fopen("/proc/loadavg","r");
if (fff!=NULL) {
result=fscanf(fff,"%f" "%f" "%f", load_1, load_5, load_15);
fclose (fff);
}
}
int get_os_info(struct os_info_type *os_info) {
return uname_get_os_info(os_info);
}
char *get_host_name(char *hostname,char *domain) {
return uname_get_host_name(hostname,domain);
}
/* This is a newer method to obtain memory info from /proc/iomem memory
* map under 2.4.x. It should work with ACPI systems too. */
/* Originally Contributed by Sitsofe Wheeler <sits@sucs.swan.ac.uk> */
/* Improved a bit (in theory) to handle 64-bit machines -vmw */
long long get_mem_size_iomem(void) {
unsigned long long mem_size=0,begin,end;
char *pos;
char temp_string[BUFSIZ];
FILE *info;
if ((info=fopen("/proc/iomem", "r"))) {
while (fgets(temp_string, BUFSIZ, info)) {
pos=strchr(temp_string, ':');
/* It's safe to +1 to pos because in the worst case we will be on the
* end of string marker. I just hope strncmp does bounds checking */
if (pos && (strncmp(pos+1, " System RAM", 10)==0 ||
strncmp(pos+1, " ACPI", 5)==0)) {
/* Extract the upper memory position */
/*printf("Adding %s region ",pos);*/
pos = strchr(temp_string, '-');
if (pos) {
*pos=0;
end=strtoull(pos+1, NULL, 16);
begin=strtoull(temp_string,NULL,16);
mem_size+=(end-begin);
/*printf("%lld bytes\n",(end-begin));*/
}
}
}
fclose(info);
}
if (mem_size > 0) {
/* if over, round up */
if (mem_size%(1024*1024)) {
mem_size = (mem_size/(1024*1024))+1;
}
else {
mem_size = (mem_size/(1024*1024));
}
return mem_size;
}
else return 0;
}
/* mem_size in megabytes by statting /proc/kcore */
/* This won't work on 32bit machines with > 2Gig of RAM */
long long get_mem_size_stat(void) {
long long mem_size=0;
struct stat buff;
stat("/proc/kcore",&buff);
mem_size=buff.st_size;
mem_size/=(1024*1024);
return mem_size;
}
long long get_mem_size_sysinfo(void) {
long long mem_size=0;
struct sysinfo system_info;
sysinfo(&system_info);
mem_size=(system_info.totalram*system_info.mem_unit)/(1024*1024);
return mem_size;
}
/* get mem size from /proc/meminfo */
long long get_mem_size_meminfo(void) {
long long mem_size=0;
char temp_string[BUFSIZ];
FILE *info;
int position=0;
info=fopen("/proc/meminfo", "r");
if (info==NULL) {
printf("Error opening /proc/meminfo!\n");
return 0;
}
while (fgets(temp_string, BUFSIZ, info)) {
position=0;
/* Skip label */
while (temp_string[position]) {
if (isdigit(temp_string[position])) break;
position++;
}
/* Grab values (in kb) */
if (strstr(temp_string, "MemTotal"))
mem_size = atoll(temp_string+position);
}
fclose(info);
return mem_size/1024ULL;
}
/* Try the new 2.4 method of looking in /proc/iomem for memory and if it
* fails fall back to the default method of stating /proc/kmem or
* filtering /proc/meminfo */
long long get_mem_size(void) {
long long mem_size=0;
/* First try any arch-specific memsize functions */
mem_size=get_arch_specific_mem_size();
if (mem_size == MEM_USE_MEMINFO) {
mem_size = 0;
goto use_meminfo;
}
if (mem_size == MEM_USE_SYSINFO) {
mem_size = 0;
goto use_sysinfo;
}
/* Next try the 2.4.x+ method of iomem */
if (mem_size == 0) mem_size = get_mem_size_iomem();
/* Try stat-ing /proc/kcore */
if (mem_size == 0) mem_size = get_mem_size_stat();
use_sysinfo:
/* sysinfo should return same as /proc/meminfo */
/* which, sadly, is often from 1MB-20MB off */
if (mem_size == 0) mem_size = get_mem_size_sysinfo();
use_meminfo:
/* If all else fails, try using /proc/meminfo */
if (mem_size == 0) mem_size = get_mem_size_meminfo();
return mem_size;
}
|
