1 /* $NetBSD: ntfs_conv.c,v 1.9 2008/04/28 20:24:02 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * File name recode stuff. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: ntfs_conv.c,v 1.9 2008/04/28 20:24:02 martin Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/namei.h> 39 #include <sys/proc.h> 40 #include <sys/kernel.h> 41 #include <sys/vnode.h> 42 #include <sys/mount.h> 43 #include <sys/buf.h> 44 #include <sys/file.h> 45 #include <sys/malloc.h> 46 #include <sys/lock.h> 47 48 #include <miscfs/specfs/specdev.h> 49 50 #include <fs/ntfs/ntfs.h> 51 #include <fs/ntfs/ntfsmount.h> 52 #include <fs/ntfs/ntfs_inode.h> 53 #include <fs/ntfs/ntfs_vfsops.h> 54 #include <fs/ntfs/ntfs_subr.h> 55 #include <fs/ntfs/ntfs_compr.h> 56 #include <fs/ntfs/ntfs_ihash.h> 57 58 /* UTF-8 encoding stuff */ 59 #include <fs/unicode.h> 60 61 /* 62 * Read one wide character off the string, shift the string pointer 63 * and return the character. 64 */ 65 wchar 66 ntfs_utf8_wget(const char **str, size_t *sz) 67 { 68 return (wchar) wget_utf8(str, sz); 69 } 70 71 /* 72 * Encode wide character and write it to the string. 'n' specifies 73 * how much space there is in the string. Returns number of bytes written 74 * to the target string. 75 */ 76 int 77 ntfs_utf8_wput(char *s, size_t n, wchar wc) 78 { 79 return wput_utf8(s, n, (u_int16_t) wc); 80 } 81 82 /* 83 * Compare two wide characters, returning 1, 0, -1 if the first is 84 * bigger, equal or lower than the second. 85 */ 86 int 87 ntfs_utf8_wcmp(wchar wc1, wchar wc2) 88 { 89 /* no conversions needed for utf8 */ 90 91 if (wc1 == wc2) 92 return 0; 93 else 94 return (int) wc1 - (int) wc2; 95 } 96