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