baae0324b9
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* $NetBSD: svr4_exec.c,v 1.34 2000/11/21 00:37:55 jdolecek Exp $ */
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/*-
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* Copyright (c) 1994 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 contributed to The NetBSD Foundation
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* by Christos Zoulas.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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#define ELFSIZE 32 /* XXX should die */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#include <sys/exec_elf.h>
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#include <sys/exec.h>
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#include <sys/mman.h>
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#include <machine/cpu.h>
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#include <machine/reg.h>
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#include <compat/svr4/svr4_types.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_syscall.h>
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#include <compat/svr4/svr4_exec.h>
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#include <compat/svr4/svr4_errno.h>
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#include <compat/svr4/svr4_signal.h>
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const char svr4_emul_path[] = "/emul/svr4";
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extern char svr4_sigcode[], svr4_esigcode[];
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extern struct sysent svr4_sysent[];
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extern const char * const svr4_syscallnames[];
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const struct emul emul_svr4 = {
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"svr4",
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native_to_svr4_errno,
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svr4_sendsig,
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SVR4_SYS_syscall,
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SVR4_SYS_MAXSYSCALL,
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svr4_sysent,
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svr4_syscallnames,
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svr4_sigcode,
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svr4_esigcode,
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};
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void *
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svr4_copyargs(pack, arginfo, stack, argp)
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struct exec_package *pack;
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struct ps_strings *arginfo;
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void *stack;
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void *argp;
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{
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AuxInfo *a;
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if (!(a = (AuxInfo *) elf32_copyargs(pack, arginfo, stack, argp)))
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return NULL;
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#ifdef SVR4_COMPAT_SOLARIS2
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if (pack->ep_emul_arg) {
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a->au_type = AT_SUN_UID;
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a->au_v = p->p_ucred->cr_uid;
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a++;
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a->au_type = AT_SUN_RUID;
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a->au_v = p->p_cred->ruid;
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a++;
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a->au_type = AT_SUN_GID;
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a->au_v = p->p_ucred->cr_gid;
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a++;
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a->au_type = AT_SUN_RGID;
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a->au_v = p->p_cred->rgid;
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a++;
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}
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#endif
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return a;
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}
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int
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svr4_elf32_probe(p, epp, eh, itp, pos)
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struct proc *p;
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struct exec_package *epp;
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void *eh;
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char *itp;
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vaddr_t *pos;
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{
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const char *bp;
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int error;
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size_t len;
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if (itp[0]) {
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if ((error = emul_find(p, NULL, svr4_emul_path, itp, &bp, 0)))
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return error;
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if ((error = copystr(bp, itp, MAXPATHLEN, &len)))
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return error;
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free((void *)bp, M_TEMP);
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}
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*pos = SVR4_INTERP_ADDR;
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return 0;
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}
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