182 lines
4.9 KiB
C
182 lines
4.9 KiB
C
/* $NetBSD: netbsd32_exec_elf32.c,v 1.19 2003/06/29 22:29:37 fvdl Exp $ */
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/* from: NetBSD: exec_aout.c,v 1.15 1996/09/26 23:34:46 cgd Exp */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green.
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* Copyright (c) 1993, 1994 Christopher G. Demetriou
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* All rights reserved.
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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 Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_exec_elf32.c,v 1.19 2003/06/29 22:29:37 fvdl Exp $");
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#define ELFSIZE 32
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/vnode.h>
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#include <sys/exec.h>
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#include <sys/exec_elf.h>
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#include <sys/resourcevar.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_exec.h>
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#include <machine/frame.h>
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#include <machine/netbsd32_machdep.h>
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int netbsd32_copyinargs(struct exec_package *, struct ps_strings *,
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void *, size_t, const void *, const void *);
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int ELFNAME2(netbsd32,probe_noteless)(struct proc *, struct exec_package *epp,
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void *eh, char *itp, vaddr_t *pos);
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extern int ELFNAME2(netbsd,signature)(struct proc *, struct exec_package *,
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Elf_Ehdr *);
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int
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ELFNAME2(netbsd32,probe)(struct proc *p, struct exec_package *epp,
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void *eh, char *itp, vaddr_t *pos)
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{
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int error;
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if ((error = ELFNAME2(netbsd,signature)(p, epp, eh)) != 0)
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return error;
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return ELFNAME2(netbsd32,probe_noteless)(p, epp, eh, itp, pos);
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}
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int
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ELFNAME2(netbsd32,probe_noteless)(struct proc *p, struct exec_package *epp,
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void *eh, char *itp, vaddr_t *pos)
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{
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int error;
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if (itp[0]) {
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/* Translate interpreter name if needed */
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if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path,
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itp)) != 0)
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return error;
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}
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epp->ep_flags |= EXEC_32;
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epp->ep_vm_minaddr = VM_MIN_ADDRESS;
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epp->ep_vm_maxaddr = USRSTACK32;
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*pos = ELFDEFNNAME(NO_ADDR);
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return 0;
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}
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/* round up and down to page boundaries. */
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#define ELF_ROUND(a, b) (((a) + (b) - 1) & ~((b) - 1))
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#define ELF_TRUNC(a, b) ((a) & ~((b) - 1))
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/*
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* Copy arguments onto the stack in the normal way, but add some
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* extra information in case of dynamic binding.
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*/
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int
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netbsd32_elf32_copyargs(struct proc *p, struct exec_package *pack,
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struct ps_strings *arginfo, char **stackp, void *argp)
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{
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size_t len;
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AuxInfo ai[ELF_AUX_ENTRIES], *a;
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struct elf_args *ap;
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int error;
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if ((error = netbsd32_copyargs(p, pack, arginfo, stackp, argp)) != 0)
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return error;
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a = ai;
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/*
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* Push extra arguments on the stack needed by dynamically
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* linked binaries
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*/
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if ((ap = (struct elf_args *)pack->ep_emul_arg)) {
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a->a_type = AT_PHDR;
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a->a_v = ap->arg_phaddr;
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a++;
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a->a_type = AT_PHENT;
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a->a_v = ap->arg_phentsize;
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a++;
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a->a_type = AT_PHNUM;
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a->a_v = ap->arg_phnum;
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a++;
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a->a_type = AT_PAGESZ;
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a->a_v = PAGE_SIZE;
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a++;
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a->a_type = AT_BASE;
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a->a_v = ap->arg_interp;
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a++;
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a->a_type = AT_FLAGS;
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a->a_v = 0;
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a++;
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a->a_type = AT_ENTRY;
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a->a_v = ap->arg_entry;
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a++;
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a->a_type = AT_EUID;
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a->a_v = p->p_ucred->cr_uid;
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a++;
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a->a_type = AT_RUID;
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a->a_v = p->p_cred->p_ruid;
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a++;
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a->a_type = AT_EGID;
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a->a_v = p->p_ucred->cr_gid;
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a++;
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a->a_type = AT_RGID;
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a->a_v = p->p_cred->p_rgid;
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a++;
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free((char *)ap, M_TEMP);
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pack->ep_emul_arg = NULL;
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}
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a->a_type = AT_NULL;
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a->a_v = 0;
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a++;
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len = (a - ai) * sizeof(AuxInfo);
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if ((error = copyout(ai, *stackp, len)) != 0)
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return error;
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*stackp += len;
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return 0;
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}
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