xref: /freebsd/sbin/kldstat/kldstat.c (revision ab00ac327a66a53edaac95b536b209db3ae2cd9f)
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 <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 #include <strings.h>
40 
41 #define	POINTER_WIDTH	((int)(sizeof(void *) * 2 + 2))
42 
43 static int showdata = 0;
44 
45 static void
46 printmod(int modid)
47 {
48     struct module_stat stat;
49 
50     bzero(&stat, sizeof(stat));
51     stat.version = sizeof(struct module_stat);
52     if (modstat(modid, &stat) < 0)
53 	warn("can't stat module id %d", modid);
54     else
55 	if (showdata) {
56 	    printf("\t\t%2d %s (%d, %u, 0x%lx)\n", stat.id, stat.name,
57 	        stat.data.intval, stat.data.uintval, stat.data.ulongval);
58 	} else {
59 		printf("\t\t%2d %s\n", stat.id, stat.name);
60 	}
61 }
62 
63 static void
64 printfile(int fileid, int verbose, int humanized)
65 {
66     struct kld_file_stat stat;
67     int modid;
68     char buf[5];
69 
70     stat.version = sizeof(struct kld_file_stat);
71     if (kldstat(fileid, &stat) < 0) {
72 	err(1, "can't stat file id %d", fileid);
73     } else {
74 	if (humanized) {
75 	       humanize_number(buf, sizeof(buf), stat.size,
76 	           "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE);
77 
78 	       printf("%2d %4d %p %5s %s",
79 	           stat.id, stat.refs, stat.address, buf, stat.name);
80 	} else {
81 		printf("%2d %4d %p %-8zx %s",
82 		    stat.id, stat.refs, stat.address, stat.size, stat.name);
83 	}
84     }
85 
86     if (verbose) {
87 	printf(" (%s)\n", stat.pathname);
88 	printf("\tContains modules:\n");
89 	printf("\t\tId Name\n");
90 	for (modid = kldfirstmod(fileid); modid > 0;
91 	     modid = modfnext(modid))
92 	    printmod(modid);
93     } else
94 	printf("\n");
95 }
96 
97 static void
98 usage(void)
99 {
100     fprintf(stderr, "usage: kldstat [-d] [-h] [-q] [-v] [-i id] [-n filename]\n");
101     fprintf(stderr, "       kldstat [-d] [-q] [-m modname]\n");
102     exit(1);
103 }
104 
105 int
106 main(int argc, char** argv)
107 {
108     int c;
109     int humanized = 0;
110     int verbose = 0;
111     int fileid = 0;
112     int quiet = 0;
113     char* filename = NULL;
114     char* modname = NULL;
115     char* p;
116 
117     while ((c = getopt(argc, argv, "dhi:m:n:qv")) != -1)
118 	switch (c) {
119 	case 'd':
120 	    showdata = 1;
121 	    break;
122 	case 'h':
123 	    humanized = 1;
124 	    break;
125 	case 'i':
126 	    fileid = (int)strtoul(optarg, &p, 10);
127 	    if (*p != '\0')
128 		usage();
129 	    break;
130 	case 'm':
131 	    modname = optarg;
132 	    break;
133 	case 'n':
134 	    filename = optarg;
135 	    break;
136 	case 'q':
137 	    quiet = 1;
138 	    break;
139 	case 'v':
140 	    verbose = 1;
141 	    break;
142 	default:
143 	    usage();
144 	}
145     argc -= optind;
146     argv += optind;
147 
148     if (argc != 0)
149 	usage();
150 
151     if (modname != NULL) {
152 	int modid;
153 	struct module_stat stat;
154 
155 	if ((modid = modfind(modname)) < 0) {
156 	    if (!quiet)
157 		warn("can't find module %s", modname);
158 	    return 1;
159 	} else if (quiet) {
160 	    return 0;
161 	}
162 
163 	stat.version = sizeof(struct module_stat);
164 	if (modstat(modid, &stat) < 0)
165 	    warn("can't stat module id %d", modid);
166 	else {
167 		if (showdata) {
168 		    printf("Id  Refs Name data..(int, uint, ulong)\n");
169 		    printf("%3d %4d %s (%d, %u, 0x%lx)\n", stat.id, stat.refs, stat.name,
170 		        stat.data.intval, stat.data.uintval, stat.data.ulongval);
171 		} else {
172 		    printf("Id  Refs Name\n");
173 		    printf("%3d %4d %s\n", stat.id, stat.refs, stat.name);
174 		}
175 	}
176 
177 	return 0;
178     }
179 
180     if (filename != NULL) {
181 	if ((fileid = kldfind(filename)) < 0) {
182 	    if (!quiet)
183 		warn("can't find file %s", filename);
184 	    return 1;
185 	} else if (quiet) {
186 	    return 0;
187 	}
188     }
189 
190     if (humanized)
191 	    printf("Id Refs Address%*c  Size Name\n", POINTER_WIDTH - 7, ' ');
192     else
193 	    printf("Id Refs Address%*c Size     Name\n", POINTER_WIDTH - 7, ' ');
194     if (fileid != 0)
195 	printfile(fileid, verbose, humanized);
196     else
197 	for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
198 	    printfile(fileid, verbose, humanized);
199 
200     return 0;
201 }
202