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 * $FreeBSD$ 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/user.h> 40 41char p_stat[] = "?iRSTZWM"; 42 43int 44main(int argc, char *argv[]) 45{ 46 int mib[4], i, num, len, j, plen; 47 char buf[MAXPATHLEN], vty[5], pst[5], wmesg[10]; 48 struct kinfo_proc *ki; 49 char *t; 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) != 0) { 56 perror("sysctl sizing"); 57 exit(1); 58 } 59 t = (char *)malloc(len); 60 if (sysctl(mib, 3, t, &len, NULL, 0) != 0) { 61 perror("sysctl info"); 62 exit(1); 63 } 64 mib[2] = KERN_PROC_ARGS; 65 num = len / KINFO_PROC_SIZE; 66 i = 0; 67 printf("USERNAME PID PPID PRI NICE TTY STAT WCHAN COMMAND\n"); 68 while(i < num) { 69 ki = (struct kinfo_proc *)(t + (num - i - 1) * KINFO_PROC_SIZE); 70 mib[3] = ki->ki_pid; 71 plen = MAXPATHLEN; 72 if (sysctl(mib, 4, buf, &plen, NULL, 0) != 0) { 73 perror("sysctl cmd info"); 74 exit(1); 75 } 76 if (plen == 0) { 77 sprintf(buf, "(%s)", ki->ki_comm); 78 } else { 79 for (j = 0; j < plen - 1; j++) { 80 if (buf[j] == '\0') buf[j] = ' '; 81 } 82 } 83 if (strcmp(ki->ki_wmesg, "") == 0) { 84 sprintf(wmesg, "-"); 85 } else { 86 strcpy(wmesg, ki->ki_wmesg); 87 } 88 ma = major(ki->ki_tdev); 89 mi = minor(ki->ki_tdev); 90 switch(ma) { 91 case 255: 92 strcpy(vty, "??"); 93 break; 94 case 12: 95 if(mi != 255) { 96 sprintf(vty, "v%d", mi); 97 break; 98 } 99 /* FALLTHROUGH */ 100 case 0: 101 strcpy(vty, "con"); 102 break; 103 case 5: 104 sprintf(vty, "p%d", mi); 105 break; 106 } 107 sprintf(pst, "%c", p_stat[ki->ki_stat]); 108 printf("%8s %5u %5u %3d %4d %3s %-4s %-7s %s\n", 109 ki->ki_login, 110 ki->ki_pid, 111 ki->ki_ppid, 112 ki->ki_pri.pri_level, /* XXX check this */ 113 ki->ki_nice, 114 vty, 115 pst, 116 wmesg, 117 buf); 118 i++; 119 } 120 free((void *)t); 121 exit(0); 122} 123