1 /* $NetBSD: linux_exec.c,v 1.37 2000/06/29 02:40:38 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas, Frank van der Linden, Eric Haszlakiewicz and 9 * Thor Lancelot Simon. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/proc.h> 44 #include <sys/malloc.h> 45 #include <sys/namei.h> 46 #include <sys/vnode.h> 47 #include <sys/mount.h> 48 #include <sys/exec.h> 49 #include <sys/exec_elf.h> 50 51 #include <sys/mman.h> 52 #include <sys/syscallargs.h> 53 54 #include <machine/cpu.h> 55 #include <machine/reg.h> 56 57 #include <compat/linux/common/linux_types.h> 58 #include <compat/linux/common/linux_signal.h> 59 #include <compat/linux/common/linux_util.h> 60 #include <compat/linux/common/linux_exec.h> 61 #include <compat/linux/common/linux_machdep.h> 62 63 #include <compat/linux/linux_syscallargs.h> 64 #include <compat/linux/linux_syscall.h> 65 66 67 const char linux_emul_path[] = "/emul/linux"; 68 69 /* 70 * Execve(2). Just check the alternate emulation path, and pass it on 71 * to the NetBSD execve(). 72 */ 73 int 74 linux_sys_execve(p, v, retval) 75 struct proc *p; 76 void *v; 77 register_t *retval; 78 { 79 struct linux_sys_execve_args /* { 80 syscallarg(const char *) path; 81 syscallarg(char **) argv; 82 syscallarg(char **) envp; 83 } */ *uap = v; 84 struct sys_execve_args ap; 85 caddr_t sg; 86 87 sg = stackgap_init(p->p_emul); 88 LINUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 89 90 SCARG(&ap, path) = SCARG(uap, path); 91 SCARG(&ap, argp) = SCARG(uap, argp); 92 SCARG(&ap, envp) = SCARG(uap, envp); 93 94 return sys_execve(p, &ap, retval); 95 } 96