kldstat.c revision 294624 
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 294624 2016-01-23 12:10:16Z trasz $");
29
30#include <err.h>
31#include <libutil.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
55printfile(int fileid, int verbose, int humanized)
56{
57    struct kld_file_stat stat;
58    int modid;
59    char buf[5];
60
61    stat.version = sizeof(struct kld_file_stat);
62    if (kldstat(fileid, &stat) < 0) {
63	err(1, "can't stat file id %d", fileid);
64    } else {
65	if (humanized) {
66	       humanize_number(buf, sizeof(buf), stat.size,
67	           "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE);
68
69	       printf("%2d %4d %p %5s %s",
70	           stat.id, stat.refs, stat.address, buf, stat.name);
71	} else {
72		printf("%2d %4d %p %-8zx %s",
73		    stat.id, stat.refs, stat.address, stat.size, stat.name);
74	}
75    }
76
77    if (verbose) {
78	printf(" (%s)\n", stat.pathname);
79	printf("\tContains modules:\n");
80	printf("\t\tId Name\n");
81	for (modid = kldfirstmod(fileid); modid > 0;
82	     modid = modfnext(modid))
83	    printmod(modid);
84    } else
85	printf("\n");
86}
87
88static void
89usage(void)
90{
91    fprintf(stderr, "usage: kldstat [-h] [-q] [-v] [-i id] [-n filename]\n");
92    fprintf(stderr, "       kldstat [-q] [-m modname]\n");
93    exit(1);
94}
95
96int
97main(int argc, char** argv)
98{
99    int c;
100    int humanized = 0;
101    int verbose = 0;
102    int fileid = 0;
103    int quiet = 0;
104    char* filename = NULL;
105    char* modname = NULL;
106    char* p;
107
108    while ((c = getopt(argc, argv, "hi:m:n:qv")) != -1)
109	switch (c) {
110	case 'h':
111	    humanized = 1;
112	    break;
113	case 'i':
114	    fileid = (int)strtoul(optarg, &p, 10);
115	    if (*p != '\0')
116		usage();
117	    break;
118	case 'm':
119	    modname = optarg;
120	    break;
121	case 'n':
122	    filename = optarg;
123	    break;
124	case 'q':
125	    quiet = 1;
126	    break;
127	case 'v':
128	    verbose = 1;
129	    break;
130	default:
131	    usage();
132	}
133    argc -= optind;
134    argv += optind;
135
136    if (argc != 0)
137	usage();
138
139    if (modname != NULL) {
140	int modid;
141	struct module_stat stat;
142
143	if ((modid = modfind(modname)) < 0) {
144	    if (!quiet)
145		warn("can't find module %s", modname);
146	    return 1;
147	} else if (quiet) {
148	    return 0;
149	}
150
151	stat.version = sizeof(struct module_stat);
152	if (modstat(modid, &stat) < 0)
153	    warn("can't stat module id %d", modid);
154	else {
155	    printf("Id  Refs Name\n");
156	    printf("%3d %4d %s\n", stat.id, stat.refs, stat.name);
157	}
158
159	return 0;
160    }
161
162    if (filename != NULL) {
163	if ((fileid = kldfind(filename)) < 0) {
164	    if (!quiet)
165		warn("can't find file %s", filename);
166	    return 1;
167	} else if (quiet) {
168	    return 0;
169	}
170    }
171
172    if (humanized)
173	    printf("Id Refs Address%*c  Size Name\n", POINTER_WIDTH - 7, ' ');
174    else
175	    printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
176    if (fileid != 0)
177	printfile(fileid, verbose, humanized);
178    else
179	for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
180	    printfile(fileid, verbose, humanized);
181
182    return 0;
183}
184