1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate #include <stdio.h> 29*0Sstevel@tonic-gate #include <unistd.h> 30*0Sstevel@tonic-gate #include <string.h> 31*0Sstevel@tonic-gate #include <sys/systeminfo.h> 32*0Sstevel@tonic-gate #include <sys/param.h> 33*0Sstevel@tonic-gate #include <sys/auxv.h> 34*0Sstevel@tonic-gate #include "_conv.h" 35*0Sstevel@tonic-gate #include "arch_msg.h" 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate /* 38*0Sstevel@tonic-gate * Determine if the 32-bit or 64-bit kernel is running. 39*0Sstevel@tonic-gate * Return the corresponding EI_CLASS constant. 40*0Sstevel@tonic-gate */ 41*0Sstevel@tonic-gate int 42*0Sstevel@tonic-gate conv_sys_eclass() 43*0Sstevel@tonic-gate { 44*0Sstevel@tonic-gate char buf[BUFSIZ]; 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate /* 47*0Sstevel@tonic-gate * SI_ISALIST will return -1 on pre-2.6 machines, 48*0Sstevel@tonic-gate * which is fine - it can't be a 64-bit kernel. 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate if (sysinfo(SI_ISALIST, buf, BUFSIZ) == -1) 51*0Sstevel@tonic-gate return (ELFCLASS32); 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate if ((strstr(buf, MSG_ORIG(MSG_ARCH_SPARCV9)) != NULL) || 54*0Sstevel@tonic-gate (strstr(buf, MSG_ORIG(MSG_ARCH_AMD64)) != NULL)) 55*0Sstevel@tonic-gate return (ELFCLASS64); 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate return (ELFCLASS32); 58*0Sstevel@tonic-gate } 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate #if defined(_LP64) 61*0Sstevel@tonic-gate /* ARGSUSED */ 62*0Sstevel@tonic-gate void 63*0Sstevel@tonic-gate conv_check_native(char **argv, char **envp) 64*0Sstevel@tonic-gate { 65*0Sstevel@tonic-gate /* ia32 & 64-bit sparc version does nothing */ 66*0Sstevel@tonic-gate } 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate #else 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate /* 71*0Sstevel@tonic-gate * Wrapper for isaexec(3c) that allows disabling 64-bit counterpart execution 72*0Sstevel@tonic-gate * via setting LD_NOEXEC64=yes. 73*0Sstevel@tonic-gate * 74*0Sstevel@tonic-gate * The only callers are 32-bit sgs applications. These applications determine 75*0Sstevel@tonic-gate * whether a 64-bit counterpart is available via this routine, and if not, 76*0Sstevel@tonic-gate * control is passed back to the caller, who will then complete execution. 77*0Sstevel@tonic-gate * Note, isaexec() will eventually fall through to looking for a 32-bit 78*0Sstevel@tonic-gate * counterpart (ie. sparcv7, or sparc), but as none of the callers provide these 79*0Sstevel@tonic-gate * counterparts, we simply return to the caller. 80*0Sstevel@tonic-gate */ 81*0Sstevel@tonic-gate void 82*0Sstevel@tonic-gate conv_check_native(char **argv, char **envp) 83*0Sstevel@tonic-gate { 84*0Sstevel@tonic-gate char *str; 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate /* 87*0Sstevel@tonic-gate * LD_NOEXEC_64 defined in the environment prevents the isaexec() call. 88*0Sstevel@tonic-gate * This is used by the test suite to test 32-bit support libraries. 89*0Sstevel@tonic-gate */ 90*0Sstevel@tonic-gate if (((str = getenv(MSG_ORIG(MSG_LD_NOEXEC64))) != NULL) && *str) 91*0Sstevel@tonic-gate return; 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate (void) isaexec(getexecname(), argv, envp); 94*0Sstevel@tonic-gate } 95*0Sstevel@tonic-gate #endif 96