freebsd-dev/sbin/kldstat/kldstat.c
Johan Karlsson 7f10745771 style(9): use NULL when assigning/comparing a char *,
consitently compare fileid with 0 using == and !=.

Reviewed by:	silence on @audit
2003-04-23 20:33:57 +00:00

131 lines
3.3 KiB
C

/*-
* Copyright (c) 1997 Doug Rabson
* 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 AUTHOR 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 AUTHOR 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.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <err.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/module.h>
#include <sys/linker.h>
#if defined(__alpha__)
#define POINTER_WIDTH 18
#else
#define POINTER_WIDTH 10
#endif
static void
printmod(int modid)
{
struct module_stat stat;
stat.version = sizeof(struct module_stat);
if (modstat(modid, &stat) < 0)
warn("can't stat module id %d", modid);
else
printf("\t\t%2d %s\n", stat.id, stat.name);
}
static void printfile(int fileid, int verbose)
{
struct kld_file_stat stat;
int modid;
stat.version = sizeof(struct kld_file_stat);
if (kldstat(fileid, &stat) < 0)
warn("can't stat file id %d", fileid);
else
printf("%2d %4d %p %-8jx %s\n",
stat.id, stat.refs, stat.address, (uintmax_t)stat.size,
stat.name);
if (verbose) {
printf("\tContains modules:\n");
printf("\t\tId Name\n");
for (modid = kldfirstmod(fileid); modid > 0;
modid = modfnext(modid))
printmod(modid);
}
}
static void
usage(void)
{
fprintf(stderr, "usage: kldstat [-v] [-i id] [-n name]\n");
exit(1);
}
int
main(int argc, char** argv)
{
int c;
int verbose = 0;
int fileid = 0;
char* filename = NULL;
while ((c = getopt(argc, argv, "i:n:v")) != -1)
switch (c) {
case 'i':
fileid = atoi(optarg);
break;
case 'n':
filename = optarg;
break;
case 'v':
verbose = 1;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
if (filename != NULL) {
if ((fileid = kldfind(filename)) < 0)
err(1, "can't find file %s", filename);
}
printf("Id Refs Address%*c Size Name\n", POINTER_WIDTH - 7, ' ');
if (fileid != 0)
printfile(fileid, verbose);
else
for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid))
printfile(fileid, verbose);
return 0;
}