114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
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/* $NetBSD: svr4_mod.c,v 1.1 2008/11/19 18:36:05 ad Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software developed for The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: svr4_mod.c,v 1.1 2008/11/19 18:36:05 ad Exp $");
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#ifndef ELFSIZE
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#define ELFSIZE ARCH_ELFSIZE
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#endif
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#include <sys/param.h>
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#include <sys/module.h>
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#include <sys/exec.h>
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#include <sys/exec_elf.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_exec.h>
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#if defined(EXEC_ELF32) && ELFSIZE == 32
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# define MD1 ",exec_elf32"
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#else
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# define MD1 ""
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#endif
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#if defined(EXEC_ELF64)
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# define MD2 ",exec_elf64"
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#else
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# define MD2 ""
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#endif
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MODULE(MODULE_CLASS_MISC, compat_svr4, "compat" MD1 MD2);
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#define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \
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sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1))
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#define ELF64_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux64Info), \
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sizeof(Elf64_Addr)) + MAXPATHLEN + ALIGN(1))
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static struct execsw svr4_execsw[] = {
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#if defined(EXEC_ELF32) && ELFSIZE == 32
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{ sizeof (Elf32_Ehdr),
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exec_elf32_makecmds,
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{ svr4_elf32_probe },
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&emul_svr4,
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EXECSW_PRIO_LAST, /* probe always succeeds */
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ELF32_AUXSIZE,
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elf32_copyargs,
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NULL,
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coredump_elf32,
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exec_setup_stack },
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#elif defined(EXEC_ELF64)
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{ sizeof (Elf64_Ehdr),
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exec_elf64_makecmds,
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{ svr4_elf64_probe },
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&emul_svr4,
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EXECSW_PRIO_LAST, /* probe always succeeds */
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ELF64_AUXSIZE,
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elf64_copyargs,
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NULL,
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coredump_elf64,
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exec_setup_stack },
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#endif
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};
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static int
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compat_svr4_modcmd(modcmd_t cmd, void *arg)
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{
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int error;
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switch (cmd) {
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case MODULE_CMD_INIT:
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svr4_md_init();
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error = exec_add(svr4_execsw, __arraycount(svr4_execsw));
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if (error != 0)
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svr4_md_fini();
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return error;
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case MODULE_CMD_FINI:
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error = exec_remove(svr4_execsw, __arraycount(svr4_execsw));
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if (error == 0)
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svr4_md_fini();
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return error;
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default:
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return ENOTTY;
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}
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}
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