libstatgrab/examples/process_snapshot.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 *
 * This program 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
 * of the License, or (at your option) any later version.
 *
 * This program 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Id: process_snapshot.c,v 1.5 2004/04/04 22:52:40 tdb Exp $
 */

#include <stdio.h>
#include <statgrab.h>
#include <stdlib.h>
#include <unistd.h>

int main(){
        proc_state_t *ps;
        int ps_size;
        int x;
        char *state = NULL;

        /* Initialise statgrab */
        statgrab_init();

        /* Drop setuid/setgid privileges. */
        if (statgrab_drop_privileges() != 0) {
                perror("Error. Failed to drop privileges");
                return 1;
        }

        ps_size = get_proc_snapshot(&ps);

        if(ps_size < 0){
                fprintf(stderr, "Failed to get process snapshot\n");
                exit(1);
        }

        printf("%5s %5s %5s %5s %5s %5s %5s %6s %6s %9s %-10s %-4s %-8s %-20s %s\n",
                "pid", "ppid", "pgid", "uid", "euid", "gid", "egid", "size", "res", "time", "cpu", "nice", "state", "name", "title");

        for(x=0;x<ps_size;x++){
                switch (ps->state) {
                case RUNNING:
                        state = "RUNNING";
                        break;
                case SLEEPING:
                        state = "SLEEPING";
                        break;
                case STOPPED:
                        state = "STOPPED";
                        break;
                case ZOMBIE:
                        state = "ZOMBIE";
                        break;
                case UNKNOWN:
                        state = "UNKNOWN";
                        break;
                }
                printf("%5d %5d %5d %5d %5d %5d %5d %5dM %5dM %8ds %10f %4d %-8s %-20s %s\n",
                        (int)ps->pid, (int)ps->parent, (int)ps->pgid, (int)ps->uid,
                        (int)ps->euid, (int)ps->gid, (int)ps->egid,
                        (int)(ps->proc_size / (1024*1024)),
                        (int)(ps->proc_resident / (1024*1024)),
                        (int)ps->time_spent, (float)ps->cpu_percent,
                        (int)ps->nice, state,
                        ps->process_name, ps->proctitle);
                ps++;
        }
        return 0;
}
Revision:	1.6
Committed:	Sun Apr 4 23:57:33 2004 UTC (20 years, 1 month ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+2 -2 lines
Log Message:	Returning NULL in a function that returns int's is wrong :) Now returns -1 on failure. Also change code that calls us to check for < 0 for failures.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org
4	* Copyright (C) 2000-2004 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	* $Id: process_snapshot.c,v 1.5 2004/04/04 22:52:40 tdb Exp $
21	*/
22
23	#include <stdio.h>
24	#include <statgrab.h>
25	#include <stdlib.h>
26	#include <unistd.h>
27
28	int main(){
29	proc_state_t *ps;
30	int ps_size;
31	int x;
32	char *state = NULL;
33
34	/* Initialise statgrab */
35	statgrab_init();
36
37	/* Drop setuid/setgid privileges. */
38	if (statgrab_drop_privileges() != 0) {
39	perror("Error. Failed to drop privileges");
40	return 1;
41	}
42
43	ps_size = get_proc_snapshot(&ps);
44
45	if(ps_size < 0){
46	fprintf(stderr, "Failed to get process snapshot\n");
47	exit(1);
48	}
49
50	printf("%5s %5s %5s %5s %5s %5s %5s %6s %6s %9s %-10s %-4s %-8s %-20s %s\n",
51	"pid", "ppid", "pgid", "uid", "euid", "gid", "egid", "size", "res", "time", "cpu", "nice", "state", "name", "title");
52
53	for(x=0;x<ps_size;x++){
54	switch (ps->state) {
55	case RUNNING:
56	state = "RUNNING";
57	break;
58	case SLEEPING:
59	state = "SLEEPING";
60	break;
61	case STOPPED:
62	state = "STOPPED";
63	break;
64	case ZOMBIE:
65	state = "ZOMBIE";
66	break;
67	case UNKNOWN:
68	state = "UNKNOWN";
69	break;
70	}
71	printf("%5d %5d %5d %5d %5d %5d %5d %5dM %5dM %8ds %10f %4d %-8s %-20s %s\n",
72	(int)ps->pid, (int)ps->parent, (int)ps->pgid, (int)ps->uid,
73	(int)ps->euid, (int)ps->gid, (int)ps->egid,
74	(int)(ps->proc_size / (1024*1024)),
75	(int)(ps->proc_resident / (1024*1024)),
76	(int)ps->time_spent, (float)ps->cpu_percent,
77	(int)ps->nice, state,
78	ps->process_name, ps->proctitle);
79	ps++;
80	}
81	return 0;
82	}