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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/user.h>
char p_stat[] = "?iRSTZWM";
int
main(int argc, char *argv[])
{
int mib[4], i, num, len, j, plen;
char buf[MAXPATHLEN], vty[5], pst[5], wmesg[10];
struct kinfo_proc *ki;
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) != 0) {
perror("sysctl sizing");
exit(1);
}
t = (char *)malloc(len);
if (sysctl(mib, 3, t, &len, NULL, 0) != 0) {
perror("sysctl info");
exit(1);
}
mib[2] = KERN_PROC_ARGS;
num = len / KINFO_PROC_SIZE;
i = 0;
printf("USERNAME PID PPID PRI NICE TTY STAT WCHAN COMMAND\n");
while(i < num) {
ki = (struct kinfo_proc *)(t + (num - i - 1) * KINFO_PROC_SIZE);
mib[3] = ki->ki_pid;
plen = MAXPATHLEN;
if (sysctl(mib, 4, buf, &plen, NULL, 0) != 0) {
perror("sysctl cmd info");
exit(1);
}
if (plen == 0) {
sprintf(buf, "(%s)", ki->ki_comm);
} else {
for (j = 0; j < plen - 1; j++) {
if (buf[j] == '\0') buf[j] = ' ';
}
}
if (strcmp(ki->ki_wmesg, "") == 0) {
sprintf(wmesg, "-");
} else {
strcpy(wmesg, ki->ki_wmesg);
}
ma = major(ki->ki_tdev);
mi = minor(ki->ki_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[ki->ki_stat]);
printf("%8s %5u %5u %3d %4d %3s %-4s %-7s %s\n",
ki->ki_login,
ki->ki_pid,
ki->ki_ppid,
ki->ki_pri.pri_level, /* XXX check this */
ki->ki_nice,
vty,
pst,
wmesg,
buf);
i++;
}
free((void *)t);
exit(0);
}
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