kldstat.c revision 150509 
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 150509 2005-09-24 08:20:45Z pjd $");
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 [-q] [-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    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}
160