NetBSD/sys/compat/svr4/svr4_exec.c

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/* $NetBSD: svr4_exec.c,v 1.25 1998/09/04 19:54:37 christos Exp $ */
/*-
* Copyright (c) 1994 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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.
*/
#define ELFSIZE 32 /* XXX should die */
#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_elf.h>
#include <sys/exec.h>
#include <sys/mman.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_map.h>
#include <machine/cpu.h>
#include <machine/reg.h>
#include <machine/svr4_machdep.h>
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#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_syscall.h>
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#include <compat/svr4/svr4_exec.h>
static void *svr4_copyargs __P((struct exec_package *, struct ps_strings *,
void *, void *));
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const char svr4_emul_path[] = "/emul/svr4";
extern int svr4_error[];
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extern char svr4_sigcode[], svr4_esigcode[];
extern struct sysent svr4_sysent[];
extern char *svr4_syscallnames[];
struct emul emul_svr4 = {
"svr4",
svr4_error,
svr4_sendsig,
SVR4_SYS_syscall,
SVR4_SYS_MAXSYSCALL,
svr4_sysent,
svr4_syscallnames,
SVR4_AUX_ARGSIZ,
svr4_copyargs,
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svr4_setregs,
svr4_sigcode,
svr4_esigcode,
};
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static void *
svr4_copyargs(pack, arginfo, stack, argp)
struct exec_package *pack;
struct ps_strings *arginfo;
void *stack;
void *argp;
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{
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;
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}
int
svr4_elf32_probe(p, epp, eh, itp, pos)
struct proc *p;
struct exec_package *epp;
Elf32_Ehdr *eh;
char *itp;
Elf32_Addr *pos;
{
char *bp;
int error;
size_t len;
if (itp[0]) {
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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;
return 0;
}