xref: /freebsd/sbin/kldstat/kldstat.c (revision 30d239bc4c510432e65a84fa1c14ed67a3ab1c92)
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("$FreeBSD$");
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 
42 static void
43 printmod(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 
54 static 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 (%s)\n",
64 	       stat.id, stat.refs, stat.address, (uintmax_t)stat.size,
65 	       stat.name, stat.pathname);
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 
76 static void
77 usage(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 
84 int
85 main(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