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/* $OpenBSD: svr4_exec.c,v 1.16 2008/06/12 04:32:59 miod Exp $ */
/* $NetBSD: svr4_exec.c,v 1.16 1995/10/14 20:24:20 christos Exp $ */
/*
* Copyright (c) 1994 Christos Zoulas
* 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. 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/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
#include <sys/exec_olf.h>
#include <sys/mman.h>
#include <uvm/uvm_extern.h>
#include <machine/cpu.h>
#include <machine/reg.h>
#include <machine/svr4_machdep.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_syscall.h>
#include <compat/svr4/svr4_exec.h>
#include <compat/svr4/svr4_errno.h>
static void *svr4_copyargs(struct exec_package *, struct ps_strings *,
void *, void *);
const char svr4_emul_path[] = "/emul/svr4";
extern char svr4_sigcode[], svr4_esigcode[];
extern struct sysent svr4_sysent[];
#ifdef SYSCALL_DEBUG
extern char *svr4_syscallnames[];
#endif
struct emul emul_svr4 = {
"svr4",
native_to_svr4_errno,
svr4_sendsig,
SVR4_SYS_syscall,
SVR4_SYS_MAXSYSCALL,
svr4_sysent,
#ifdef SYSCALL_DEBUG
svr4_syscallnames,
#else
NULL,
#endif
SVR4_AUX_ARGSIZ,
svr4_copyargs,
setregs,
exec_elf32_fixup,
svr4_sigcode,
svr4_esigcode,
};
static void *
svr4_copyargs(pack, arginfo, stack, argp)
struct exec_package *pack;
struct ps_strings *arginfo;
void *stack;
void *argp;
{
AuxInfo *a;
if (!(a = (AuxInfo *)elf32_copyargs(pack, arginfo, stack, argp)))
return (NULL);
#ifdef SVR4_COMPAT_SOLARIS2
if (pack->ep_emul_arg) {
a->au_id = AUX_sun_uid;
a->au_v = p->p_ucred->cr_uid;
a++;
a->au_id = AUX_sun_ruid;
a->au_v = p->p_cred->ruid;
a++;
a->au_id = AUX_sun_gid;
a->au_v = p->p_ucred->cr_gid;
a++;
a->au_id = AUX_sun_rgid;
a->au_v = p->p_cred->rgid;
a++;
}
#endif
return (a);
}
int
svr4_elf_probe(p, epp, itp, pos, os)
struct proc *p;
struct exec_package *epp;
char *itp;
u_long *pos;
u_int8_t *os;
{
char *bp;
int error;
size_t len;
if (!(emul_svr4.e_flags & EMUL_ENABLED))
return (ENOEXEC);
if (itp) {
if ((error = emul_find(p, NULL, svr4_emul_path, itp, &bp, 0)))
return (error);
if ((error = copystr(bp, itp, MAXPATHLEN, &len)))
return (error);
free(bp, M_TEMP);
}
epp->ep_emul = &emul_svr4;
*pos = SVR4_INTERP_ADDR;
if (*os == OOS_NULL)
*os = OOS_SVR4;
return (0);
}
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