netbsd32_execve.c revision 1.33
1/* $NetBSD: netbsd32_execve.c,v 1.33 2012/01/31 22:53:56 matt Exp $ */ 2 3/* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30 31__KERNEL_RCSID(0, "$NetBSD: netbsd32_execve.c,v 1.33 2012/01/31 22:53:56 matt Exp $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/mount.h> 36#include <sys/stat.h> 37#include <sys/vnode.h> 38#include <sys/file.h> 39#include <sys/filedesc.h> 40#include <sys/syscallargs.h> 41#include <sys/proc.h> 42#include <sys/exec.h> 43 44#include <compat/netbsd32/netbsd32.h> 45#include <compat/netbsd32/netbsd32_syscall.h> 46#include <compat/netbsd32/netbsd32_syscallargs.h> 47 48static int 49netbsd32_execve_fetch_element(char * const *array, size_t index, char **value) 50{ 51 int error; 52 netbsd32_charp const *a32 = (void const *)array; 53 netbsd32_charp e; 54 55 error = copyin(a32 + index, &e, sizeof(e)); 56 if (error) 57 return error; 58 *value = (char *)NETBSD32PTR64(e); 59 return 0; 60} 61 62int 63netbsd32_execve(struct lwp *l, const struct netbsd32_execve_args *uap, register_t *retval) 64{ 65 /* { 66 syscallarg(const netbsd32_charp) path; 67 syscallarg(netbsd32_charpp) argp; 68 syscallarg(netbsd32_charpp) envp; 69 } */ 70 const char *path = SCARG_P32(uap, path); 71 72 return execve1(l, path, SCARG_P32(uap, argp), 73 SCARG_P32(uap, envp), netbsd32_execve_fetch_element); 74} 75 76int 77netbsd32_fexecve(struct lwp *l, const struct netbsd32_fexecve_args *uap, 78 register_t *retval) 79{ 80 /* { 81 syscallarg(int) fd; 82 syscallarg(netbsd32_charpp) argp; 83 syscallarg(netbsd32_charpp) envp; 84 } */ 85 struct sys_fexecve_args ua; 86 87 NETBSD32TO64_UAP(fd); 88 NETBSD32TOP_UAP(argp, char * const); 89 NETBSD32TOP_UAP(envp, char * const); 90 91 return sys_fexecve(l, &ua, retval); 92} 93