sps.c revision 38589 
1/*-
2 * Copyright (c) 1998 Andrzej Bialecki
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: sps.c,v 1.2 1998/07/17 07:55:47 abial Exp $
27 */
28
29/*
30 * Small replacement for ps(1) - uses only sysctl(3) to retrieve info
31 */
32
33#include <stdio.h>
34#include <stdlib.h>
35#include <string.h>
36#include <sys/param.h>
37#include <sys/sysctl.h>
38#include <sys/stat.h>
39#include <sys/proc.h>
40#include <sys/user.h>
41
42char p_stat[]="?iRSTZ";
43
44int
45main(int argc, char *argv[])
46{
47	int mib[3],i=0,num,len;
48	struct kinfo_proc kp,*t,*u;
49	char buf[20],vty[5],pst[5];
50	int ma,mi;
51
52	mib[0]=CTL_KERN;
53	mib[1]=KERN_PROC;
54	mib[2]=KERN_PROC_ALL;
55	if(sysctl(mib,3,NULL,&len,NULL,0)) {
56		perror("sysctl sizing");
57		exit(1);
58	}
59	t=(struct kinfo_proc *)malloc(len);
60	if(sysctl(mib,3,t,&len,NULL,0)) {
61		perror("sysctl info");
62		exit(1);
63	}
64	num=len / sizeof(struct kinfo_proc);
65	i=0;
66	printf("USERNAME  PID PPID PRI NICE TTY STAT WCHAN   COMMAND\n");
67	while(i<num) {
68		u=(t+num-i-1);
69		ma=major(u->kp_eproc.e_tdev);
70		mi=minor(u->kp_eproc.e_tdev);
71		switch(ma) {
72		case 255:
73			strcpy(vty,"??");
74			break;
75		case 12:
76			if(mi!=255) {
77				sprintf(vty,"v%d",mi);
78				break;
79			}
80			/* FALLTHROUGH */
81		case 0:
82			strcpy(vty,"con");
83			break;
84		case 5:
85			sprintf(vty,"p%d",mi);
86			break;
87		}
88		sprintf(pst,"%c",p_stat[u->kp_proc.p_stat]);
89		printf("%8s%5d%5d %3d %4d %3s %-4s %-7s (%s)\n",
90			u->kp_eproc.e_login,
91			u->kp_proc.p_pid,
92			u->kp_eproc.e_ppid,
93			u->kp_proc.p_priority,
94			u->kp_proc.p_nice,
95			vty,
96			pst,
97			u->kp_eproc.e_wmesg,
98			u->kp_proc.p_comm);
99		i++;
100	}
101	free(t);
102	exit(0);
103
104}
105