test/debug/kshowprocs.c

   1 /*
   2  * KSHOWPROCS.C
   3  *
   4  * cc kshowprocs.c -o /usr/local/bin/kshowprocs -g -O0 -pipe -lkvm
   5  *
   6  * Dump kernel processes
   7  *
   8  * Copyright (c) 2011 The DragonFly Project.  All rights reserved.
   9  *
  10  * This code is derived from software contributed to The DragonFly Project
  11  * by Antonio Huete <tuxillo@quantumachine.net>
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in
  21  *    the documentation and/or other materials provided with the
  22  *    distribution.
  23  * 3. Neither the name of The DragonFly Project nor the names of its
  24  *    contributors may be used to endorse or promote products derived
  25  *    from this software without specific, prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  30  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  31  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  32  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  33  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  34  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  35  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  36  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  */
  40
  41
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <fcntl.h>
  46 #include <kvm.h>
  47 #include <err.h>
  48 #include <nlist.h>
  49 #include <getopt.h>
  50
  51 #include <sys/user.h>
  52 #include <sys/sysctl.h>
  53
  54 int debugopt;
  55 int verboseopt;
  56
  57 int
  58 main(int ac, char **av)
  59 {
  60     const char *corefile = NULL;
  61     const char *sysfile = NULL;
  62     struct kinfo_proc *kp;
  63     kvm_t *kd;
  64     int ch;
  65     int i;
  66     int nprocs;
  67
  68     while ((ch = getopt(ac, av, "M:N:v")) != -1) {
  69         switch(ch) {
  70         case 'v':
  71             ++verboseopt;
  72             break;
  73         case 'M':
  74             corefile = optarg;
  75             break;
  76         case 'N':
  77             sysfile = optarg;
  78             break;
  79         default:
  80             fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
  81             exit(1);
  82         }
  83     }
  84     ac -= optind;
  85     av += optind;
  86
  87     if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
  88         perror("kvm_open");
  89         exit(1);
  90     }
  91
  92     if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nprocs)) == NULL)
  93         errx(1, "%s", kvm_geterr(kd));
  94
  95     fprintf(stdout, "%-6s %-6s %-20s %-10s %-5s\n",
  96         "PID",
  97         "PPID",
  98         "COMMAND",
  99         "LOGIN",
 100         "NICE");
 101
 102     for (i = 0; i < nprocs; i++) {
 103             fprintf(stdout, "%-6d %-6d %-20s %-10s %-5d\n",
 104                 kp[i].kp_pid,
 105                 kp[i].kp_ppid,
 106                 kp[i].kp_comm,
 107                 kp[i].kp_login,
 108                 kp[i].kp_nice);
 109     }
 110
 111     kvm_close(kd);
 112
 113     return 0;
 114
 115 }