kldstat.c revision 268903 
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: stable/10/sbin/kldstat/kldstat.c 268903 2014-07-20 00:34:54Z bapt $");
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
54printfile(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	err(1, "can't stat file id %d", fileid);
62    else
63	printf("%2d %4d %p %-8zx %s",
64	       stat.id, stat.refs, stat.address, stat.size,
65	       stat.name);
66
67    if (verbose) {
68	printf(" (%s)\n", stat.pathname);
69	printf("\tContains modules:\n");
70	printf("\t\tId Name\n");
71	for (modid = kldfirstmod(fileid); modid > 0;
72	     modid = modfnext(modid))
73	    printmod(modid);
74    } else
75	printf("\n");
76}
77
78static void
79usage(void)
80{
81    fprintf(stderr, "usage: kldstat [-q] [-v] [-i id] [-n filename]\n");
82    fprintf(stderr, "       kldstat [-q] [-m modname]\n");
83    exit(1);
84}
85
86int
87main(int argc, char** argv)
88{
89    int c;
90    int verbose = 0;
91    int fileid = 0;
92    int quiet = 0;
93    char* filename = NULL;
94    char* modname = NULL;
95    char* p;
96
97    while ((c = getopt(argc, argv, "i:m:n:qv")) != -1)
98	switch (c) {
99	case 'i':
100	    fileid = (int)strtoul(optarg, &p, 10);
101	    if (*p != '\0')
102		usage();
103	    break;
104	case 'm':
105	    modname = optarg;
106	    break;
107	case 'n':
108	    filename = optarg;
109	    break;
110	case 'q':
111	    quiet = 1;
112	    break;
113	case 'v':
114	    verbose = 1;
115	    break;
116	default:
117	    usage();
118	}
119    argc -= optind;
120    argv += optind;
121
122    if (argc != 0)
123	usage();
124
125    if (modname != NULL) {
126	int modid;
127	struct module_stat stat;
128
129	if ((modid = modfind(modname)) < 0) {
130	    if (!quiet)
131		warn("can't find module %s", modname);
132	    return 1;
133	} else if (quiet) {
134	    return 0;
135	}
136
137	stat.version = sizeof(struct module_stat);
138	if (modstat(modid, &stat) < 0)
139	    warn("can't stat module id %d", modid);
140	else {
141	    printf("Id  Refs Name\n");
142	    printf("%3d %4d %s\n", stat.id, stat.refs, stat.name);
143	}
144
145	return 0;
146    }
147
148    if (filename != NULL) {
149	if ((fileid = kldfind(filename)) < 0) {
150	    if (!quiet)
151		warn("can't find file %s", filename);
152	    return 1;
153	} else if (quiet) {
154	    return 0;
155	}
156    }
157
158    printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
159    if (fileid != 0)
160	printfile(fileid, verbose);
161    else
162	for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
163	    printfile(fileid, verbose);
164
165    return 0;
166}
167