1 /* $OpenBSD: exec_conf.c,v 1.37 2021/03/21 11:29:38 semarie Exp $ */ 2 /* $NetBSD: exec_conf.c,v 1.16 1995/12/09 05:34:47 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1993, 1994 Christopher G. Demetriou 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christopher G. Demetriou. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/exec.h> 36 #include <sys/exec_script.h> 37 #include <sys/exec_elf.h> 38 39 extern struct emul emul_native; 40 41 const struct execsw execsw[] = { 42 { /* shell scripts */ 43 .es_hdrsz = EXEC_SCRIPT_HDRSZ, 44 .es_check = exec_script_makecmds, 45 }, 46 { /* elf binaries */ 47 .es_hdrsz = sizeof(Elf_Ehdr), 48 .es_check = exec_elf_makecmds, 49 }, 50 }; 51 int nexecs = (sizeof execsw / sizeof(*execsw)); 52 int exec_maxhdrsz; 53 54 void init_exec(void); 55 56 void 57 init_exec(void) 58 { 59 int i; 60 61 /* 62 * figure out the maximum size of an exec header. 63 */ 64 for (i = 0; i < nexecs; i++) 65 if (execsw[i].es_check != NULL && 66 execsw[i].es_hdrsz > exec_maxhdrsz) 67 exec_maxhdrsz = execsw[i].es_hdrsz; 68 } 69