59a949601f
Kernel modules allow the system administrator to dynamically add and remove functionality from a running system. This ability also helps software developers to develop new parts of the kernel without constantly rebooting to test their changes. This package provides the necessary utilities for using kernel modules on NetBSD 5.x. The modload utility loads a kernel module specified by the module parameter into the running system. The modunload utility unloads a loadable kernel module from a running system. The modstat utility displays the status of any kernel modules present in the kernel.
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/* $NetBSD: modstat.c,v 1.1.1.1 2011/08/27 12:33:11 jmcneill Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: modstat.c,v 1.1.1.1 2011/08/27 12:33:11 jmcneill Exp $");
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#endif /* !lint */
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#include <sys/module.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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int main(int, char **);
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static void usage(void) __dead;
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static const char *classes[] = {
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"any",
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"misc",
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"vfs",
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"driver",
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"exec",
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};
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static const char *sources[] = {
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"kernel",
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"boot",
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"filesys",
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};
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int
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main(int argc, char **argv)
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{
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struct iovec iov;
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modstat_t *ms;
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size_t len;
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const char *name;
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char sbuf[32];
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int ch;
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name = NULL;
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while ((ch = getopt(argc, argv, "n:")) != -1) {
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switch (ch) {
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case 'n':
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name = optarg;
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break;
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default:
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usage();
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/* NOTREACHED */
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 0)
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usage();
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for (len = 4096;;) {
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iov.iov_base = malloc(len);
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iov.iov_len = len;
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if (modctl(MODCTL_STAT, &iov)) {
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err(EXIT_FAILURE, "modctl(MODCTL_STAT)");
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}
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if (len >= iov.iov_len) {
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break;
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}
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free(iov.iov_base);
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len = iov.iov_len;
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}
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printf("NAME\t\tCLASS\tSOURCE\tREFS\tSIZE\tREQUIRES\n");
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len = iov.iov_len / sizeof(modstat_t);
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for (ms = iov.iov_base; len != 0; ms++, len--) {
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if (name != NULL && strcmp(ms->ms_name, name) != 0) {
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continue;
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}
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if (ms->ms_required[0] == '\0') {
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ms->ms_required[0] = '-';
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ms->ms_required[1] = '\0';
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}
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if (ms->ms_size == 0) {
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sbuf[0] = '-';
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sbuf[1] = '\0';
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} else {
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snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size);
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}
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printf("%-16s%s\t%s\t%d\t%s\t%s\n",
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ms->ms_name, classes[ms->ms_class], sources[ms->ms_source],
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ms->ms_refcnt, sbuf, ms->ms_required);
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}
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exit(EXIT_SUCCESS);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr, "Usage: %s [-n name]", getprogname());
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exit(EXIT_FAILURE);
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}
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