kldstat.c revision 207964 
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 207964 2010-05-12 15:47:43Z brueffer $");
29
30#include <err.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
41static void
42printmod(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
53static void printfile(int fileid, int verbose)
54{
55    struct kld_file_stat stat;
56    int modid;
57
58    stat.version = sizeof(struct kld_file_stat);
59    if (kldstat(fileid, &stat) < 0)
60	warn("can't stat file id %d", fileid);
61    else
62	printf("%2d %4d %p %-8zx %s",
63	       stat.id, stat.refs, stat.address, stat.size,
64	       stat.name);
65
66    if (verbose) {
67	printf(" (%s)\n", stat.pathname);
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    } else
74	printf("\n");
75}
76
77static void
78usage(void)
79{
80    fprintf(stderr, "usage: kldstat [-v] [-i id] [-n filename]\n");
81    fprintf(stderr, "       kldstat [-q] [-m modname]\n");
82    exit(1);
83}
84
85int
86main(int argc, char** argv)
87{
88    int c;
89    int verbose = 0;
90    int fileid = 0;
91    int quiet = 0;
92    char* filename = NULL;
93    char* modname = NULL;
94    char* p;
95
96    while ((c = getopt(argc, argv, "i:m:n:qv")) != -1)
97	switch (c) {
98	case 'i':
99	    fileid = (int)strtoul(optarg, &p, 10);
100	    if (*p != '\0')
101		usage();
102	    break;
103	case 'm':
104	    modname = optarg;
105	    break;
106	case 'n':
107	    filename = optarg;
108	    break;
109	case 'q':
110	    quiet = 1;
111	    break;
112	case 'v':
113	    verbose = 1;
114	    break;
115	default:
116	    usage();
117	}
118    argc -= optind;
119    argv += optind;
120
121    if (argc != 0)
122	usage();
123
124    if (modname != NULL) {
125	int modid;
126	struct module_stat stat;
127
128	if ((modid = modfind(modname)) < 0) {
129	    if (!quiet)
130		warn("can't find module %s", modname);
131	    return 1;
132	} else if (quiet) {
133	    return 0;
134	}
135
136	stat.version = sizeof(struct module_stat);
137	if (modstat(modid, &stat) < 0)
138	    warn("can't stat module id %d", modid);
139	else {
140	    printf("Id  Refs Name\n");
141	    printf("%3d %4d %s\n", stat.id, stat.refs, stat.name);
142	}
143
144	return 0;
145    }
146
147    if (filename != NULL) {
148	if ((fileid = kldfind(filename)) < 0)
149	    err(1, "can't find file %s", filename);
150    }
151
152    printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
153    if (fileid != 0)
154	printfile(fileid, verbose);
155    else
156	for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
157	    printfile(fileid, verbose);
158
159    return 0;
160}
161