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/* $OpenBSD: exec_conf.c,v 1.27 2011/06/27 03:27:07 tedu Exp $ */
/* $NetBSD: exec_conf.c,v 1.16 1995/12/09 05:34:47 cgd Exp $ */
/*
* Copyright (c) 1993, 1994 Christopher G. Demetriou
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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/param.h>
#include <sys/exec.h>
#include <sys/exec_script.h>
#if defined(_KERN_DO_ECOFF)
#include <sys/exec_ecoff.h>
#endif
#if defined(_KERN_DO_ELF) || defined(_KERN_DO_ELF64)
#include <sys/exec_elf.h>
#endif
#ifdef COMPAT_SVR4
#include <compat/svr4/svr4_exec.h>
#endif
#ifdef COMPAT_LINUX
#include <compat/linux/linux_exec.h>
#endif
extern struct emul emul_native, emul_elf32, emul_elf64, emul_aout,
emul_freebsd_aout, emul_freebsd_elf,
emul_linux_elf, emul_linux_aout, emul_netbsd_elf64,
emul_sunos, emul_svr4;
struct execsw execsw[] = {
{ EXEC_SCRIPT_HDRSZ, exec_script_makecmds, &emul_native, }, /* shell scripts */
#ifdef _KERN_DO_AOUT
#ifdef COMPAT_AOUT
{ sizeof(struct exec), exec_aout_makecmds, &emul_aout },
#else
{ sizeof(struct exec), exec_aout_makecmds, &emul_native }, /* a.out binaries */
#endif
#endif
#ifdef _KERN_DO_ECOFF
{ ECOFF_HDR_SIZE, exec_ecoff_makecmds, &emul_native }, /* ecoff binaries */
#endif
#ifdef _KERN_DO_ELF
{ sizeof(Elf32_Ehdr), exec_elf32_makecmds, &emul_native }, /* elf binaries */
#endif
#ifdef _KERN_DO_ELF64
{ sizeof(Elf64_Ehdr), exec_elf64_makecmds, &emul_native }, /* elf binaries */
#endif /* ELF64 */
#ifdef COMPAT_LINUX
{ LINUX_AOUT_HDR_SIZE, exec_linux_aout_makecmds, &emul_linux_aout }, /* linux a.out */
{ sizeof(Elf32_Ehdr), exec_linux_elf32_makecmds, &emul_linux_elf },
#endif
#ifdef COMPAT_SVR4
{ sizeof(Elf32_Ehdr), exec_elf32_makecmds, &emul_svr4 }, /* elf binaries */
#endif
#ifdef LKM
{ 0, NULL, NULL }, /* entries for LKMs */
{ 0, NULL, NULL },
{ 0, NULL, NULL },
{ 0, NULL, NULL },
{ 0, NULL, NULL },
#endif
};
int nexecs = (sizeof execsw / sizeof(*execsw));
int exec_maxhdrsz;
void init_exec(void);
void
init_exec(void)
{
int i;
/*
* figure out the maximum size of an exec header.
* XXX should be able to keep LKM code from modifying exec switch
* when we're still using it, but...
*/
for (i = 0; i < nexecs; i++)
if (execsw[i].es_check != NULL &&
execsw[i].es_hdrsz > exec_maxhdrsz)
exec_maxhdrsz = execsw[i].es_hdrsz;
}
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