NetBSD/sys/compat/svr4/svr4_mod.c

114 lines
3.2 KiB
C

/* $NetBSD: svr4_mod.c,v 1.1 2008/11/19 18:36:05 ad Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software developed for The NetBSD Foundation
* by Andrew Doran.
*
* 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>
__KERNEL_RCSID(0, "$NetBSD: svr4_mod.c,v 1.1 2008/11/19 18:36:05 ad Exp $");
#ifndef ELFSIZE
#define ELFSIZE ARCH_ELFSIZE
#endif
#include <sys/param.h>
#include <sys/module.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_exec.h>
#if defined(EXEC_ELF32) && ELFSIZE == 32
# define MD1 ",exec_elf32"
#else
# define MD1 ""
#endif
#if defined(EXEC_ELF64)
# define MD2 ",exec_elf64"
#else
# define MD2 ""
#endif
MODULE(MODULE_CLASS_MISC, compat_svr4, "compat" MD1 MD2);
#define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \
sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1))
#define ELF64_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux64Info), \
sizeof(Elf64_Addr)) + MAXPATHLEN + ALIGN(1))
static struct execsw svr4_execsw[] = {
#if defined(EXEC_ELF32) && ELFSIZE == 32
{ sizeof (Elf32_Ehdr),
exec_elf32_makecmds,
{ svr4_elf32_probe },
&emul_svr4,
EXECSW_PRIO_LAST, /* probe always succeeds */
ELF32_AUXSIZE,
elf32_copyargs,
NULL,
coredump_elf32,
exec_setup_stack },
#elif defined(EXEC_ELF64)
{ sizeof (Elf64_Ehdr),
exec_elf64_makecmds,
{ svr4_elf64_probe },
&emul_svr4,
EXECSW_PRIO_LAST, /* probe always succeeds */
ELF64_AUXSIZE,
elf64_copyargs,
NULL,
coredump_elf64,
exec_setup_stack },
#endif
};
static int
compat_svr4_modcmd(modcmd_t cmd, void *arg)
{
int error;
switch (cmd) {
case MODULE_CMD_INIT:
svr4_md_init();
error = exec_add(svr4_execsw, __arraycount(svr4_execsw));
if (error != 0)
svr4_md_fini();
return error;
case MODULE_CMD_FINI:
error = exec_remove(svr4_execsw, __arraycount(svr4_execsw));
if (error == 0)
svr4_md_fini();
return error;
default:
return ENOTTY;
}
}