xref: /freebsd/sbin/kldstat/kldstat.c (revision 6990ffd8a95caaba6858ad44ff1b3157d1efba8f)
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 
27 #ifndef lint
28 static const char rcsid[] =
29   "$FreeBSD$";
30 #endif /* not lint */
31 
32 #include <err.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <unistd.h>
36 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/module.h>
39 #include <sys/linker.h>
40 
41 #if defined(__alpha__)
42 #define	POINTER_WIDTH	18
43 #else
44 #define	POINTER_WIDTH	10
45 #endif
46 
47 static void
48 printmod(int modid)
49 {
50     struct module_stat stat;
51 
52     stat.version = sizeof(struct module_stat);
53     if (modstat(modid, &stat) < 0)
54 	warn("can't stat module id %d", modid);
55     else
56 	printf("\t\t%2d %s\n", stat.id, stat.name);
57 }
58 
59 static void printfile(int fileid, int verbose)
60 {
61     struct kld_file_stat stat;
62     int modid;
63 
64     stat.version = sizeof(struct kld_file_stat);
65     if (kldstat(fileid, &stat) < 0)
66 	warn("can't stat file id %d", fileid);
67     else
68 	printf("%2d %4d %p %-8x %s\n",
69 	       stat.id, stat.refs, stat.address, stat.size, stat.name);
70 
71     if (verbose) {
72 	printf("\tContains modules:\n");
73 	printf("\t\tId Name\n");
74 	for (modid = kldfirstmod(fileid); modid > 0;
75 	     modid = modfnext(modid))
76 	    printmod(modid);
77     }
78 }
79 
80 static void
81 usage(void)
82 {
83     fprintf(stderr, "usage: kldstat [-v] [-i id] [-n name]\n");
84     exit(1);
85 }
86 
87 int
88 main(int argc, char** argv)
89 {
90     int c;
91     int verbose = 0;
92     int fileid = 0;
93     char* filename = 0;
94 
95     while ((c = getopt(argc, argv, "i:n:v")) != -1)
96 	switch (c) {
97 	case 'i':
98 	    fileid = atoi(optarg);
99 	    break;
100 	case 'n':
101 	    filename = optarg;
102 	    break;
103 	case 'v':
104 	    verbose = 1;
105 	    break;
106 	default:
107 	    usage();
108 	}
109     argc -= optind;
110     argv += optind;
111 
112     if (argc != 0)
113 	usage();
114 
115     if (filename) {
116 	if ((fileid = kldfind(filename)) < 0)
117 	    err(1, "can't find file %s", filename);
118     }
119 
120     printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
121     if (fileid)
122 	printfile(fileid, verbose);
123     else
124 	for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
125 	    printfile(fileid, verbose);
126 
127     return 0;
128 }
129