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 1.5 2005/02/26 22:58:55 perry 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 1.5 2005/02/26 22:58:55 perry 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, size_t *sz)
   78 {
   79         return (wchar) wget_utf8(str, sz);
   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 }

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