kldstat.c revision 146465 
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#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sbin/kldstat/kldstat.c 146465 2005-05-21 07:08:32Z ru $");
29
30#include <err.h>
31#include <stdint.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <unistd.h>
35#include <sys/types.h>
36#include <sys/param.h>
37#include <sys/module.h>
38#include <sys/linker.h>
39
40#define	POINTER_WIDTH	((int)(sizeof(void *) * 2 + 2))
41
42static void
43printmod(int modid)
44{
45    struct module_stat stat;
46
47    stat.version = sizeof(struct module_stat);
48    if (modstat(modid, &stat) < 0)
49	warn("can't stat module id %d", modid);
50    else
51	printf("\t\t%2d %s\n", stat.id, stat.name);
52}
53
54static void 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
76static void
77usage(void)
78{
79    fprintf(stderr, "usage: kldstat [-v] [-i id] [-n filename]\n");
80    fprintf(stderr, "       kldstat [-m modname]\n");
81    exit(1);
82}
83
84int
85main(int argc, char** argv)
86{
87    int c;
88    int verbose = 0;
89    int fileid = 0;
90    char* filename = NULL;
91    char* modname = NULL;
92    char* p;
93
94    while ((c = getopt(argc, argv, "i:m:n:v")) != -1)
95	switch (c) {
96	case 'i':
97	    fileid = (int)strtoul(optarg, &p, 10);
98	    if (*p != '\0')
99		usage();
100	    break;
101	case 'm':
102	    modname = optarg;
103	    break;
104	case 'n':
105	    filename = optarg;
106	    break;
107	case 'v':
108	    verbose = 1;
109	    break;
110	default:
111	    usage();
112	}
113    argc -= optind;
114    argv += optind;
115
116    if (argc != 0)
117	usage();
118
119    if (modname != NULL) {
120	int modid;
121	struct module_stat stat;
122
123	if ((modid = modfind(modname)) < 0)
124	    err(1, "can't find module %s", modname);
125
126	stat.version = sizeof(struct module_stat);
127	if (modstat(modid, &stat) < 0)
128	    warn("can't stat module id %d", modid);
129	else {
130	    printf("Id  Refs Name\n");
131	    printf("%3d %4d %s\n", stat.id, stat.refs, stat.name);
132	}
133
134	return 0;
135    }
136
137    if (filename != NULL) {
138	if ((fileid = kldfind(filename)) < 0)
139	    err(1, "can't find file %s", filename);
140    }
141
142    printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
143    if (fileid != 0)
144	printfile(fileid, verbose);
145    else
146	for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
147	    printfile(fileid, verbose);
148
149    return 0;
150}
151