The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/fs/ntfs/ntfs_conv.c

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    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 }

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