90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
/* $NetBSD: getbootfile.c,v 1.1 2001/04/06 14:31:14 wiz Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Thomas Klausner.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 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>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: getbootfile.c,v 1.1 2001/04/06 14:31:14 wiz Exp $");
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <machine/cpu.h>
|
|
#include <paths.h>
|
|
#include <util.h>
|
|
|
|
#ifdef CPU_BOOTED_KERNEL
|
|
static char name[MAXPATHLEN];
|
|
#endif
|
|
|
|
const char *
|
|
getbootfile(void)
|
|
{
|
|
#ifdef CPU_BOOTED_KERNEL
|
|
int mib[2];
|
|
size_t size;
|
|
#endif
|
|
const char *kernel;
|
|
|
|
kernel = _PATH_UNIX;
|
|
#ifdef CPU_BOOTED_KERNEL
|
|
/* find real boot-kernel name */
|
|
mib[0] = CTL_MACHDEP;
|
|
mib[1] = CPU_BOOTED_KERNEL;
|
|
size = sizeof(name) - 1;
|
|
if (sysctl(mib, 2, name + 1, &size, NULL, NULL) == 0) {
|
|
/*
|
|
* traditionally, this sysctl returns the relative
|
|
* path of the kernel with the leading slash stripped
|
|
* -- could be empty, though (e.g. when netbooting).
|
|
*/
|
|
if (name[1] != '\0') {
|
|
name[0] = '/';
|
|
kernel = name;
|
|
}
|
|
|
|
/* check if we got a valid and 'secure' filename */
|
|
if (secure_path(kernel) != 0) {
|
|
/* doesn't seems so, fall back to default */
|
|
kernel = _PATH_UNIX;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return (kernel);
|
|
}
|