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root/i-scream/projects/libstatgrab/examples/vm_stats.c
Revision: 1.5
Committed: Tue Jan 6 15:35:04 2004 UTC (20 years, 4 months ago) by tdb
Content type: text/plain
Branch: MAIN
CVS Tags: LIBSTATGRAB_0_8
Changes since 1.4: +6 -0 lines
Log Message:
Add dropping privileges to all the examples.

File Contents

# Content
1 /*
2 * i-scream central monitoring system
3 * http://www.i-scream.org
4 * Copyright (C) 2000-2003 i-scream
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21 #include <stdio.h>
22 #include <statgrab.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25
26 int main(int argc, char **argv){
27
28 extern char *optarg;
29 extern int optind;
30 int c;
31
32 int delay = 1;
33 mem_stat_t *mem_stats;
34 swap_stat_t *swap_stats;
35
36 long long total, free;
37
38 while ((c = getopt(argc, argv, "d:")) != -1){
39 switch (c){
40 case 'd':
41 delay = atoi(optarg);
42 break;
43 }
44 }
45
46 /* Initialise statgrab */
47 statgrab_init();
48
49 /* Drop setuid/setgid privileges. */
50 if (statgrab_drop_privileges() != 0) {
51 perror("Error. Failed to drop privileges");
52 return 1;
53 }
54
55 if( ((mem_stats=get_memory_stats()) != NULL) && (swap_stats=get_swap_stats()) != NULL){
56 printf("Total memory in bytes : %lld\n", mem_stats->total);
57 printf("Used memory in bytes : %lld\n", mem_stats->used);
58 printf("Cache memory in bytes : %lld\n", mem_stats->cache);
59 printf("Free memory in bytes : %lld\n", mem_stats->free);
60
61 printf("Swap total in bytes : %lld\n", swap_stats->total);
62 printf("Swap used in bytes : %lld\n", swap_stats->used);
63 printf("Swap free in bytes : %lld\n", swap_stats->free);
64
65 total = mem_stats->total + swap_stats->total;
66 free = mem_stats->free + swap_stats->free;
67
68 printf("Total VM usage : %5.2f%%\n", 100 - (((float)total/(float)free)));
69
70 }
71 exit(0);
72 }