/* $OpenBSD: exec_conf.c,v 1.26 2011/04/05 12:50:15 guenther Exp $ */ /* $NetBSD: exec_conf.c,v 1.16 1995/12/09 05:34:47 cgd Exp $ */ /* * 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 #include #include #if defined(_KERN_DO_ECOFF) #include #endif #if defined(_KERN_DO_ELF) || defined(_KERN_DO_ELF64) #include #endif #ifdef COMPAT_SVR4 #include #endif #ifdef COMPAT_LINUX #include #endif #ifdef COMPAT_VAX1K #include #endif extern struct emul emul_native, emul_elf32, emul_elf64, emul_aout, emul_freebsd_aout, emul_freebsd_elf, emul_linux_elf, emul_linux_aout, emul_netbsd_elf64, emul_sunos, emul_svr4; struct execsw execsw[] = { { EXEC_SCRIPT_HDRSZ, exec_script_makecmds, &emul_native, }, /* shell scripts */ #ifdef _KERN_DO_AOUT #ifdef COMPAT_AOUT { sizeof(struct exec), exec_aout_makecmds, &emul_aout }, #else { sizeof(struct exec), exec_aout_makecmds, &emul_native }, /* a.out binaries */ #endif #endif #ifdef _KERN_DO_ECOFF { ECOFF_HDR_SIZE, exec_ecoff_makecmds, &emul_native }, /* ecoff binaries */ #endif #ifdef _KERN_DO_ELF { sizeof(Elf32_Ehdr), exec_elf32_makecmds, &emul_native }, /* elf binaries */ #endif #ifdef _KERN_DO_ELF64 { sizeof(Elf64_Ehdr), exec_elf64_makecmds, &emul_native }, /* elf binaries */ #endif /* ELF64 */ #ifdef COMPAT_LINUX { LINUX_AOUT_HDR_SIZE, exec_linux_aout_makecmds, &emul_linux_aout }, /* linux a.out */ { sizeof(Elf32_Ehdr), exec_linux_elf32_makecmds, &emul_linux_elf }, #endif #ifdef COMPAT_VAX1K { sizeof(struct exec), exec_vax1k_makecmds, &emul_native }, /* vax1k a.out */ #endif #ifdef COMPAT_SVR4 { sizeof(Elf32_Ehdr), exec_elf32_makecmds, &emul_svr4 }, /* elf binaries */ #endif #ifdef LKM { 0, NULL, NULL }, /* entries for LKMs */ { 0, NULL, NULL }, { 0, NULL, NULL }, { 0, NULL, NULL }, { 0, NULL, NULL }, #endif }; int nexecs = (sizeof execsw / sizeof(*execsw)); int exec_maxhdrsz; void init_exec(void); void init_exec(void) { int i; /* * figure out the maximum size of an exec header. * XXX should be able to keep LKM code from modifying exec switch * when we're still using it, but... */ for (i = 0; i < nexecs; i++) if (execsw[i].es_check != NULL && execsw[i].es_hdrsz > exec_maxhdrsz) exec_maxhdrsz = execsw[i].es_hdrsz; }