NetBSD/sbin/modstat/main.c

131 lines
3.2 KiB
C

/* $NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $");
#endif /* !lint */
#include <sys/module.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
int main(int, char **);
static void usage(void) __dead;
static const char *classes[] = {
"any",
"misc",
"vfs",
"driver",
"exec",
};
static const char *sources[] = {
"kernel",
"boot",
"filesys",
};
int
main(int argc, char **argv)
{
struct iovec iov;
modstat_t *ms;
size_t len;
const char *name;
char sbuf[32];
int ch;
name = NULL;
while ((ch = getopt(argc, argv, "n:")) != -1) {
switch (ch) {
case 'n':
name = optarg;
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
for (len = 4096;;) {
iov.iov_base = malloc(len);
iov.iov_len = len;
if (modctl(MODCTL_STAT, &iov)) {
err(EXIT_FAILURE, "modctl(MODCTL_STAT)");
}
if (len >= iov.iov_len) {
break;
}
free(iov.iov_base);
len = iov.iov_len;
}
printf("NAME\t\tCLASS\tSOURCE\tREFS\tSIZE\tREQUIRES\n");
len = iov.iov_len / sizeof(modstat_t);
for (ms = iov.iov_base; len != 0; ms++, len--) {
if (name != NULL && strcmp(ms->ms_name, name) != 0) {
continue;
}
if (ms->ms_required[0] == '\0') {
ms->ms_required[0] = '-';
ms->ms_required[1] = '\0';
}
if (ms->ms_size == 0) {
sbuf[0] = '-';
sbuf[1] = '\0';
} else {
snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size);
}
printf("%-16s%s\t%s\t%d\t%s\t%s\n",
ms->ms_name, classes[ms->ms_class], sources[ms->ms_source],
ms->ms_refcnt, sbuf, ms->ms_required);
}
exit(EXIT_SUCCESS);
}
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [-n name]", getprogname());
exit(EXIT_FAILURE);
}