NetBSD/sys/compat/linux/common/linux_exec.c

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/* $NetBSD: linux_exec.c,v 1.38 2000/11/21 00:37:53 jdolecek Exp $ */
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/*-
* Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas, Frank van der Linden, Eric Haszlakiewicz and
* Thor Lancelot Simon.
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*
* 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.
*/
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#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/vnode.h>
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#include <sys/mount.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
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#include <sys/mman.h>
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#include <sys/syscallargs.h>
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#include <machine/cpu.h>
#include <machine/reg.h>
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#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_util.h>
#include <compat/linux/common/linux_exec.h>
#include <compat/linux/common/linux_machdep.h>
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#include <compat/linux/linux_syscallargs.h>
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#include <compat/linux/linux_syscall.h>
#include <compat/linux/common/linux_misc.h>
#include <compat/linux/common/linux_errno.h>
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const char linux_emul_path[] = "/emul/linux";
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extern struct sysent linux_sysent[];
extern const char * const linux_syscallnames[];
extern char linux_sigcode[], linux_esigcode[];
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/*
* Execve(2). Just check the alternate emulation path, and pass it on
* to the NetBSD execve().
*/
int
linux_sys_execve(p, v, retval)
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struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_execve_args /* {
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syscallarg(const char *) path;
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syscallarg(char **) argv;
syscallarg(char **) envp;
} */ *uap = v;
struct sys_execve_args ap;
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caddr_t sg;
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sg = stackgap_init(p->p_emul);
LINUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&ap, path) = SCARG(uap, path);
SCARG(&ap, argp) = SCARG(uap, argp);
SCARG(&ap, envp) = SCARG(uap, envp);
return sys_execve(p, &ap, retval);
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}
/*
* Emulation switch.
*/
const struct emul emul_linux = {
"linux",
native_to_linux_errno,
linux_sendsig,
LINUX_SYS_syscall,
LINUX_SYS_MAXSYSCALL,
linux_sysent,
linux_syscallnames,
linux_sigcode,
linux_esigcode,
};