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/*-
* Copyright (c) 1998 Andrzej Bialecki
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Small replacement for ps(1) - uses only sysctl(3) to retrieve info
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/stat.h>
#include <sys/proc.h>
#include <sys/user.h>
char p_stat[]="?iRSTZWM";
int
main(int argc, char *argv[])
{
int mib[4],i=0, num, len, j, plen;
int sz = sizeof(struct proc) + sizeof(struct eproc);
struct proc *p;
struct eproc *ep;
char buf[MAXPATHLEN],vty[5],pst[5], wmesg[10];
char *t;
int ma,mi;
mib[0]=CTL_KERN;
mib[1]=KERN_PROC;
mib[2]=KERN_PROC_ALL;
if(sysctl(mib,3,NULL,&len,NULL,0)) {
perror("sysctl sizing");
exit(1);
}
t=(char *)malloc(len);
if(sysctl(mib,3,t,&len,NULL,0)) {
perror("sysctl info");
exit(1);
}
mib[2]=KERN_PROC_ARGS;
num = len / sz;
i=0;
printf("USERNAME PID PPID PRI NICE TTY STAT WCHAN COMMAND\n");
while(i < num) {
p=(struct proc *)(t + (num - i - 1) * sz);
ep=(struct eproc *)(t + (num - i - 1) * sz + sizeof(struct proc));
mib[3]=p->p_pid;
plen = MAXPATHLEN;
if(sysctl(mib,4,buf,&plen,NULL,0)) {
perror("sysctl info");
exit(1);
}
if(plen == 0) {
sprintf(buf, "(%s)", p->p_comm);
} else {
for(j=0; j < plen-1; j++) {
if(buf[j] == '\0') buf[j] = ' ';
}
}
if(strcmp(ep->e_wmesg, "") == 0) {
sprintf(wmesg, "-");
} else {
strcpy(wmesg, ep->e_wmesg);
}
ma=major(ep->e_tdev);
mi=minor(ep->e_tdev);
switch(ma) {
case 255:
strcpy(vty,"??");
break;
case 12:
if(mi!=255) {
sprintf(vty,"v%d",mi);
break;
}
/* FALLTHROUGH */
case 0:
strcpy(vty,"con");
break;
case 5:
sprintf(vty,"p%d",mi);
break;
}
sprintf(pst,"%c",p_stat[p->p_stat]);
printf("%8s %5u %5u %3d %4d %3s %-4s %-7s %s\n",
ep->e_login,
p->p_pid,
ep->e_ppid,
p->p_priority - 22,
p->p_nice,
vty,
pst,
wmesg,
buf);
i++;
}
free((void *)t);
exit(0);
}
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