/*      $OpenBSD: exec_conf.c,v 1.38 2021/12/07 22:17:02 guenther 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>
#include <sys/exec_elf.h>

const struct execsw execsw[] = {
        {       /* shell scripts */
                .es_hdrsz = EXEC_SCRIPT_HDRSZ,
                .es_check = exec_script_makecmds,
        },
        {       /* elf binaries */
                .es_hdrsz = sizeof(Elf_Ehdr),
                .es_check = exec_elf_makecmds,
        },
};
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.
         */
        for (i = 0; i < nexecs; i++)
                if (execsw[i].es_check != NULL &&
                    execsw[i].es_hdrsz > exec_maxhdrsz)
                        exec_maxhdrsz = execsw[i].es_hdrsz;
}