1 /* $NetBSD: netbsd32_execve.c,v 1.25 2005/12/11 12:20:22 christos 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 33 #if defined(_KERNEL_OPT) 34 #include "opt_ktrace.h" 35 #endif 36 37 __KERNEL_RCSID(0, "$NetBSD: netbsd32_execve.c,v 1.25 2005/12/11 12:20:22 christos Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/mount.h> 42 #include <sys/stat.h> 43 #include <sys/vnode.h> 44 #include <sys/file.h> 45 #include <sys/filedesc.h> 46 #include <sys/sa.h> 47 #include <sys/syscallargs.h> 48 #include <sys/proc.h> 49 #include <sys/exec.h> 50 51 #include <compat/netbsd32/netbsd32.h> 52 #include <compat/netbsd32/netbsd32_syscall.h> 53 #include <compat/netbsd32/netbsd32_syscallargs.h> 54 55 static int 56 netbsd32_execve_fetch_element(char * const *array, size_t index, char **value) 57 { 58 int error; 59 netbsd32_charp const *a32 = (void const *)array; 60 netbsd32_charp e; 61 62 error = copyin(a32 + index, &e, sizeof(e)); 63 if (error) 64 return error; 65 *value = (char *)NETBSD32PTR64(e); 66 return 0; 67 } 68 69 int 70 netbsd32_execve(struct lwp *l, void *v, register_t *retval) 71 { 72 struct netbsd32_execve_args /* { 73 syscallarg(const netbsd32_charp) path; 74 syscallarg(netbsd32_charpp) argp; 75 syscallarg(netbsd32_charpp) envp; 76 } */ *uap = v; 77 caddr_t sg; 78 const char *path = NETBSD32PTR64(SCARG(uap, path)); 79 80 sg = stackgap_init(l->l_proc, 0); 81 CHECK_ALT_EXIST(l, &sg, path); 82 83 return execve1(l, path, NETBSD32PTR64(SCARG(uap, argp)), 84 NETBSD32PTR64(SCARG(uap, envp)), netbsd32_execve_fetch_element); 85 } 86