Annotation of src/usr.bin/modstat/modstat.c, Revision 1.1
1.1 ! deraadt 1: /*
! 2: * Copyright (c) 1993 Terrence R. Lambert.
! 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: * 3. All advertising materials mentioning features or use of this software
! 14: * must display the following acknowledgement:
! 15: * This product includes software developed by Terrence R. Lambert.
! 16: * 4. The name Terrence R. Lambert may not be used to endorse or promote
! 17: * products derived from this software without specific prior written
! 18: * permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY
! 21: * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * $Id: modstat.c,v 1.6 1995/06/27 00:18:19 jtc Exp $
! 33: */
! 34:
! 35: #include <stdio.h>
! 36: #include <stdlib.h>
! 37: #include <err.h>
! 38: #include <string.h>
! 39: #include <a.out.h>
! 40: #include <sys/param.h>
! 41: #include <sys/ioctl.h>
! 42: #include <sys/conf.h>
! 43: #include <sys/mount.h>
! 44: #include <sys/lkm.h>
! 45: #include <sys/file.h>
! 46: #include <errno.h>
! 47: #include "pathnames.h"
! 48:
! 49: void
! 50: usage()
! 51: {
! 52:
! 53: fprintf(stderr, "usage:\n");
! 54: fprintf(stderr, "modstat [-i <module id>] [-n <module name>]\n");
! 55: exit(1);
! 56: }
! 57:
! 58: static char *type_names[] = {
! 59: "SYSCALL",
! 60: "VFS",
! 61: "DEV",
! 62: "STRMOD",
! 63: "EXEC",
! 64: "MISC"
! 65: };
! 66:
! 67: int
! 68: dostat(devfd, modnum, modname)
! 69: int devfd;
! 70: int modnum;
! 71: char *modname;
! 72: {
! 73: struct lmc_stat sbuf;
! 74:
! 75: if (modname != NULL)
! 76: strcpy(sbuf.name, modname);
! 77:
! 78: sbuf.id = modnum;
! 79:
! 80: if (ioctl(devfd, LMSTAT, &sbuf) == -1) {
! 81: switch (errno) {
! 82: case EINVAL: /* out of range */
! 83: return 2;
! 84: case ENOENT: /* no such entry */
! 85: return 1;
! 86: default: /* other error (EFAULT, etc) */
! 87: warn("LMSTAT");
! 88: return 4;
! 89: }
! 90: }
! 91:
! 92: /*
! 93: * Decode this stat buffer...
! 94: */
! 95: printf("%-7s %3d %3d %08x %04x %8x %3d %s\n",
! 96: type_names[sbuf.type],
! 97: sbuf.id, /* module id */
! 98: sbuf.offset, /* offset into modtype struct */
! 99: sbuf.area, /* address module loaded at */
! 100: sbuf.size, /* size in pages(K) */
! 101: sbuf.private, /* kernel address of private area */
! 102: sbuf.ver, /* Version; always 1 for now */
! 103: sbuf.name /* name from private area */
! 104: );
! 105:
! 106: /*
! 107: * Done (success).
! 108: */
! 109: return 0;
! 110: }
! 111:
! 112: int devfd;
! 113:
! 114: void
! 115: cleanup()
! 116: {
! 117:
! 118: close(devfd);
! 119: }
! 120:
! 121: int
! 122: main(argc, argv)
! 123: int argc;
! 124: char *argv[];
! 125: {
! 126: int c;
! 127: int modnum = -1;
! 128: char *modname = NULL;
! 129:
! 130: while ((c = getopt(argc, argv, "i:n:")) != EOF) {
! 131: switch (c) {
! 132: case 'i':
! 133: modnum = atoi(optarg);
! 134: break; /* number */
! 135: case 'n':
! 136: modname = optarg;
! 137: break; /* name */
! 138: case '?':
! 139: usage();
! 140: default:
! 141: printf("default!\n");
! 142: break;
! 143: }
! 144: }
! 145: argc -= optind;
! 146: argv += optind;
! 147:
! 148: if (argc != 0)
! 149: usage();
! 150:
! 151: /*
! 152: * Open the virtual device device driver for exclusive use (needed
! 153: * to ioctl() to retrive the loaded module(s) status).
! 154: */
! 155: if ((devfd = open(_PATH_LKM, O_RDONLY, 0)) == -1)
! 156: err(2, _PATH_LKM);
! 157:
! 158: atexit(cleanup);
! 159:
! 160: printf("Type Id Off Loadaddr Size Info Rev Module Name\n");
! 161:
! 162: /*
! 163: * Oneshot?
! 164: */
! 165: if (modnum != -1 || modname != NULL) {
! 166: if (dostat(devfd, modnum, modname))
! 167: exit(3);
! 168: exit(0);
! 169: }
! 170:
! 171: /*
! 172: * Start at 0 and work up until "EINVAL".
! 173: */
! 174: for (modnum = 0; dostat(devfd, modnum, NULL) < 2; modnum++)
! 175: ;
! 176:
! 177: exit(0);
! 178: }
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