sbin/kldstat/kldstat.c

   1 /*-
   2  * Copyright (c) 1997 Doug Rabson
   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: src/sbin/kldstat/kldstat.c,v 1.20 2007/10/22 04:12:57 jb Exp $
  27  */
  28
  29 #include <err.h>
  30 #include <stdint.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <unistd.h>
  34 #include <sys/types.h>
  35 #include <sys/param.h>
  36 #include <sys/module.h>
  37 #include <sys/linker.h>
  38
  39 #define POINTER_WIDTH   ((int)(sizeof(void *) * 2 + 2))
  40
  41 static void
  42 printmod(int modid)
  43 {
  44     struct module_stat stat;
  45
  46     stat.version = sizeof(struct module_stat);
  47     if (modstat(modid, &stat) < 0)
  48         warn("can't stat module id %d", modid);
  49     else
  50         printf("\t\t%2d %s\n", stat.id, stat.name);
  51 }
  52
  53 static void
  54 printfile(int fileid, int verbose)
  55 {
  56     struct kld_file_stat stat;
  57     int modid;
  58
  59     stat.version = sizeof(struct kld_file_stat);
  60     if (kldstat(fileid, &stat) < 0)
  61         warn("can't stat file id %d", fileid);
  62     else
  63         printf("%2d %4d %p %-8jx %s\n",
  64                stat.id, stat.refs, stat.address, (uintmax_t)stat.size,
  65                stat.name);
  66
  67     if (verbose) {
  68         printf("\tContains modules:\n");
  69         printf("\t\tId Name\n");
  70         for (modid = kldfirstmod(fileid); modid > 0;
  71              modid = modfnext(modid))
  72             printmod(modid);
  73     }
  74 }
  75
  76 static void
  77 usage(void)
  78 {
  79     fprintf(stderr, "usage: kldstat [-v] [-i id] [-n filename]\n");
  80     fprintf(stderr, "       kldstat [-q] [-m modname]\n");
  81     exit(1);
  82 }
  83
  84 int
  85 main(int argc, char** argv)
  86 {
  87     int c;
  88     int verbose = 0;
  89     int fileid = 0;
  90     int quiet = 0;
  91     char* filename = NULL;
  92     char* modname = NULL;
  93     char* p;
  94
  95     while ((c = getopt(argc, argv, "i:m:n:qv")) != -1)
  96         switch (c) {
  97         case 'i':
  98             fileid = (int)strtoul(optarg, &p, 10);
  99             if (*p != '\0')
 100                 usage();
 101             break;
 102         case 'm':
 103             modname = optarg;
 104             break;
 105         case 'n':
 106             filename = optarg;
 107             break;
 108         case 'q':
 109             quiet = 1;
 110             break;
 111         case 'v':
 112             verbose = 1;
 113             break;
 114         default:
 115             usage();
 116         }
 117     argc -= optind;
 118     argv += optind;
 119
 120     if (argc != 0)
 121         usage();
 122
 123     if (modname != NULL) {
 124         int modid;
 125         struct module_stat stat;
 126
 127         if ((modid = modfind(modname)) < 0) {
 128             if (!quiet)
 129                 warn("can't find module %s", modname);
 130             return 1;
 131         } else if (quiet) {
 132             return 0;
 133         }
 134
 135         stat.version = sizeof(struct module_stat);
 136         if (modstat(modid, &stat) < 0)
 137             warn("can't stat module id %d", modid);
 138         else {
 139             printf("Id  Refs Name\n");
 140             printf("%3d %4d %s\n", stat.id, stat.refs, stat.name);
 141         }
 142
 143         return 0;
 144     }
 145
 146     if (filename != NULL) {
 147         if ((fileid = kldfind(filename)) < 0)
 148             err(1, "can't find file %s", filename);
 149     }
 150
 151     printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
 152     if (fileid != 0)
 153         printfile(fileid, verbose);
 154     else
 155         for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
 156             printfile(fileid, verbose);
 157
 158     return 0;
 159 }