/* $NetBSD: netbsd32_exec_elf32.c,v 1.22 2005/02/26 23:10:21 perry Exp $ */ /* from: NetBSD: exec_aout.c,v 1.15 1996/09/26 23:34:46 cgd Exp */ /* * Copyright (c) 1998, 2001 Matthew R. Green. * 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. */ /* * Copyright (c) 1993, 1994 Christopher G. Demetriou * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou. * 4. 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 __KERNEL_RCSID(0, "$NetBSD: netbsd32_exec_elf32.c,v 1.22 2005/02/26 23:10:21 perry Exp $"); #define ELFSIZE 32 #include #include #include #include #include #include #include #include #include #include #include #include #include #include int netbsd32_copyinargs(struct exec_package *, struct ps_strings *, void *, size_t, const void *, const void *); int ELFNAME2(netbsd32,probe_noteless)(struct proc *, struct exec_package *epp, void *eh, char *itp, vaddr_t *pos); extern int ELFNAME2(netbsd,signature)(struct proc *, struct exec_package *, Elf_Ehdr *); int ELFNAME2(netbsd32,probe)(struct proc *p, struct exec_package *epp, void *eh, char *itp, vaddr_t *pos) { int error; if ((error = ELFNAME2(netbsd,signature)(p, epp, eh)) != 0) return error; return ELFNAME2(netbsd32,probe_noteless)(p, epp, eh, itp, pos); } int ELFNAME2(netbsd32,probe_noteless)(struct proc *p, struct exec_package *epp, void *eh, char *itp, vaddr_t *pos) { int error; if (itp) { /* Translate interpreter name if needed */ if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path, itp)) != 0) return error; } epp->ep_flags |= EXEC_32; epp->ep_vm_minaddr = VM_MIN_ADDRESS; epp->ep_vm_maxaddr = USRSTACK32; #ifdef ELF_INTERP_NON_RELOCATABLE *pos = ELF_LINK_ADDR; #endif return 0; } /* round up and down to page boundaries. */ #define ELF_ROUND(a, b) (((a) + (b) - 1) & ~((b) - 1)) #define ELF_TRUNC(a, b) ((a) & ~((b) - 1)) /* * Copy arguments onto the stack in the normal way, but add some * extra information in case of dynamic binding. */ int netbsd32_elf32_copyargs(struct proc *p, struct exec_package *pack, struct ps_strings *arginfo, char **stackp, void *argp) { size_t len; AuxInfo ai[ELF_AUX_ENTRIES], *a; struct elf_args *ap; int error; if ((error = netbsd32_copyargs(p, pack, arginfo, stackp, argp)) != 0) return error; a = ai; /* * Push extra arguments on the stack needed by dynamically * linked binaries */ if ((ap = (struct elf_args *)pack->ep_emul_arg)) { a->a_type = AT_PHDR; a->a_v = ap->arg_phaddr; a++; a->a_type = AT_PHENT; a->a_v = ap->arg_phentsize; a++; a->a_type = AT_PHNUM; a->a_v = ap->arg_phnum; a++; a->a_type = AT_PAGESZ; a->a_v = PAGE_SIZE; a++; a->a_type = AT_BASE; a->a_v = ap->arg_interp; a++; a->a_type = AT_FLAGS; a->a_v = 0; a++; a->a_type = AT_ENTRY; a->a_v = ap->arg_entry; a++; a->a_type = AT_EUID; a->a_v = p->p_ucred->cr_uid; a++; a->a_type = AT_RUID; a->a_v = p->p_cred->p_ruid; a++; a->a_type = AT_EGID; a->a_v = p->p_ucred->cr_gid; a++; a->a_type = AT_RGID; a->a_v = p->p_cred->p_rgid; a++; free((char *)ap, M_TEMP); pack->ep_emul_arg = NULL; } a->a_type = AT_NULL; a->a_v = 0; a++; len = (a - ai) * sizeof(AuxInfo); if ((error = copyout(ai, *stackp, len)) != 0) return error; *stackp += len; return 0; }