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ntfs_conv.c revision 1.3 
      1 /*	$NetBSD: ntfs_conv.c,v 1.3 2004/11/21 16:29:57 jdolecek 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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the NetBSD
     18  *	Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 /*
     37  * File name recode stuff.
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 __KERNEL_RCSID(0, "$NetBSD: ntfs_conv.c,v 1.3 2004/11/21 16:29:57 jdolecek Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/namei.h>
     46 #include <sys/proc.h>
     47 #include <sys/kernel.h>
     48 #include <sys/vnode.h>
     49 #include <sys/mount.h>
     50 #include <sys/buf.h>
     51 #include <sys/file.h>
     52 #include <sys/malloc.h>
     53 #include <sys/lock.h>
     54 #if defined(__FreeBSD__)
     55 #include <machine/clock.h>
     56 #endif
     57 
     58 #include <miscfs/specfs/specdev.h>
     59 
     60 /* #define NTFS_DEBUG 1 */
     61 #include <fs/ntfs/ntfs.h>
     62 #include <fs/ntfs/ntfsmount.h>
     63 #include <fs/ntfs/ntfs_inode.h>
     64 #include <fs/ntfs/ntfs_vfsops.h>
     65 #include <fs/ntfs/ntfs_subr.h>
     66 #include <fs/ntfs/ntfs_compr.h>
     67 #include <fs/ntfs/ntfs_ihash.h>
     68 
     69 /* UTF-8 encoding stuff */
     70 #include <fs/unicode.h>
     71 
     72 /*
     73  * Read one wide character off the string, shift the string pointer
     74  * and return the character.
     75  */
     76 wchar
     77 ntfs_utf8_wget(const char **str)
     78 {
     79 	return (wchar) wget_utf8(str);
     80 }
     81 
     82 /*
     83  * Encode wide character and write it to the string. 'n' specifies
     84  * how much space there is in the string. Returns number of bytes written
     85  * to the target string.
     86  */
     87 int
     88 ntfs_utf8_wput(char *s, size_t n, wchar wc)
     89 {
     90 	return wput_utf8(s, n, (u_int16_t) wc);
     91 }
     92 
     93 /*
     94  * Compare two wide characters, returning 1, 0, -1 if the first is
     95  * bigger, equal or lower than the second.
     96  */
     97 int
     98 ntfs_utf8_wcmp(wchar wc1, wchar wc2)
     99 {
    100 	/* no conversions needed for utf8 */
    101 
    102 	if (wc1 == wc2)
    103 		return 0;
    104 	else
    105 		return (int) wc1 - (int) wc2;
    106 }
    107