1/* 2 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1997 by Apple Computer, Inc., all rights reserved 30 * Copyright (c) 1993 NeXT Computer, Inc. 31 * 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/ioctl.h> 37#include <sys/tty.h> 38#include <sys/conf.h> 39#include <sys/kauth.h> 40#include <sys/ucred.h> 41#include <sys/proc_internal.h> 42#include <sys/user.h> 43#include <kern/task.h> 44#include <kern/thread.h> 45#include <vm/vm_map.h> 46#include <machine/machine_routines.h> 47 48/* 49 * copy a null terminated string from the kernel address space into 50 * the user address space. 51 * - if the user is denied write access, return EFAULT. 52 * - if the end of string isn't found before 53 * maxlen bytes are copied, return ENAMETOOLONG, 54 * indicating an incomplete copy. 55 * - otherwise, return 0, indicating success. 56 * the number of bytes copied is always returned in lencopied. 57 */ 58int 59copyoutstr(const void *from, user_addr_t to, size_t maxlen, size_t *lencopied) 60{ 61 size_t slen; 62 size_t len; 63 int error = 0; 64 65 slen = strlen(from) + 1; 66 if (slen > maxlen) 67 error = ENAMETOOLONG; 68 69 len = min(maxlen,slen); 70 if (copyout(from, to, len)) 71 error = EFAULT; 72 *lencopied = len; 73 74 return error; 75} 76 77 78/* 79 * copy a null terminated string from one point to another in 80 * the kernel address space. 81 * - no access checks are performed. 82 * - if the end of string isn't found before 83 * maxlen bytes are copied, return ENAMETOOLONG, 84 * indicating an incomplete copy. 85 * - otherwise, return 0, indicating success. 86 * the number of bytes copied is always returned in lencopied. 87 */ 88/* from ppc/fault_copy.c -Titan1T4 VERSION */ 89int 90copystr(const void *vfrom, void *vto, size_t maxlen, size_t *lencopied) 91{ 92 size_t l; 93 char const *from = (char const *) vfrom; 94 char *to = (char *) vto; 95 96 for (l = 0; l < maxlen; l++) { 97 if ((*to++ = *from++) == '\0') { 98 if (lencopied) 99 *lencopied = l + 1; 100 return 0; 101 } 102 } 103 if (lencopied) 104 *lencopied = maxlen; 105 return ENAMETOOLONG; 106} 107 108int 109copywithin(void *src, void *dst, size_t count) 110{ 111 bcopy(src,dst,count); 112 return 0; 113} 114