Annotation of src/usr.bin/modstat/modstat.c, Revision 1.15
1.15 ! ericj 1: /* $OpenBSD: modstat.c,v 1.14 2001/08/18 22:06:44 deraadt Exp $ */
1.6 deraadt 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1993 Terrence R. Lambert.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Terrence R. Lambert.
18: * 4. The name Terrence R. Lambert may not be used to endorse or promote
19: * products derived from this software without specific prior written
20: * permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY
23: * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: *
34: */
35:
36: #include <sys/param.h>
37: #include <sys/ioctl.h>
38: #include <sys/conf.h>
39: #include <sys/mount.h>
40: #include <sys/lkm.h>
1.9 deraadt 41: #include <stdio.h>
42: #include <stdlib.h>
43: #include <unistd.h>
44: #include <err.h>
1.12 millert 45: #include <fcntl.h>
1.9 deraadt 46: #include <string.h>
47: #include <a.out.h>
1.1 deraadt 48: #include <errno.h>
49: #include "pathnames.h"
50:
1.15 ! ericj 51: #define POINTERSIZE ((int)(2 * sizeof(void*)))
1.1 deraadt 52:
53: static char *type_names[] = {
54: "SYSCALL",
55: "VFS",
56: "DEV",
57: "STRMOD",
58: "EXEC",
59: "MISC"
60: };
61:
1.15 ! ericj 62: static void
! 63: usage()
! 64: {
! 65: extern char *__progname;
! 66:
! 67: (void)fprintf(stderr, "usage: %s [-i id] [-n name]\n", __progname);
! 68: exit(1);
! 69: }
! 70:
! 71: static int
! 72: dostat(int devfd, int modnum, char *modname)
1.1 deraadt 73: {
1.14 deraadt 74: char name[MAXLKMNAME];
1.1 deraadt 75: struct lmc_stat sbuf;
1.2 mickey 76:
1.14 deraadt 77: bzero(&name, sizeof name);
1.8 deraadt 78: bzero(&sbuf, sizeof sbuf);
1.2 mickey 79: sbuf.id = modnum;
80: sbuf.name = name;
1.1 deraadt 81:
1.6 deraadt 82: if (modname != NULL) {
1.10 provos 83: if (strlen(modname) >= sizeof(name))
1.6 deraadt 84: return 4;
1.14 deraadt 85: strlcpy(sbuf.name, modname, sizeof(name));
1.6 deraadt 86: }
1.1 deraadt 87:
88: if (ioctl(devfd, LMSTAT, &sbuf) == -1) {
89: switch (errno) {
90: case EINVAL: /* out of range */
91: return 2;
92: case ENOENT: /* no such entry */
93: return 1;
94: default: /* other error (EFAULT, etc) */
95: warn("LMSTAT");
96: return 4;
97: }
98: }
99:
1.14 deraadt 100: /* Decode this stat buffer... */
1.15 ! ericj 101: printf("%-7s %3d %3ld %0*lx %04lx %0*x %3ld %s\n",
! 102: type_names[sbuf.type], sbuf.id, sbuf.offset, POINTERSIZE,
! 103: (long)sbuf.area, (long)sbuf.size, POINTERSIZE,
! 104: (long)sbuf.private, (long)sbuf.ver, sbuf.name);
1.1 deraadt 105:
106: return 0;
107: }
108:
109: int devfd;
110:
111: int
112: main(argc, argv)
113: int argc;
114: char *argv[];
115: {
1.14 deraadt 116: int c, modnum = -1;
1.1 deraadt 117: char *modname = NULL;
118:
1.7 millert 119: while ((c = getopt(argc, argv, "i:n:")) != -1) {
1.1 deraadt 120: switch (c) {
121: case 'i':
122: modnum = atoi(optarg);
123: break; /* number */
124: case 'n':
125: modname = optarg;
126: break; /* name */
1.6 deraadt 127: default:
1.1 deraadt 128: usage();
129: break;
130: }
131: }
132: argc -= optind;
133: argv += optind;
134:
135: if (argc != 0)
136: usage();
137:
138: /*
139: * Open the virtual device device driver for exclusive use (needed
140: * to ioctl() to retrive the loaded module(s) status).
141: */
1.12 millert 142: if ((devfd = open(_PATH_LKM, O_RDONLY)) == -1)
1.1 deraadt 143: err(2, _PATH_LKM);
1.11 deraadt 144:
145: setegid(getgid());
146: setgid(getgid());
1.1 deraadt 147:
1.15 ! ericj 148: printf("Type Id Off %-*s Size %-*s Rev Module Name\n",
! 149: POINTERSIZE, "Loadaddr", POINTERSIZE, "Info");
1.1 deraadt 150:
151: if (modnum != -1 || modname != NULL) {
152: if (dostat(devfd, modnum, modname))
153: exit(3);
154: exit(0);
155: }
156:
1.14 deraadt 157: /* Start at 0 and work up until we receive EINVAL. */
1.1 deraadt 158: for (modnum = 0; dostat(devfd, modnum, NULL) < 2; modnum++)
159: ;
160:
161: exit(0);
162: }
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