3.27. Filename Character Sets
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3.27. Filename Character Sets

This section describes functionality and concerns related to pre-1.5.50 releases of OpenAFS for Windows. This release stores all file names on the file servers as Unicode encoded using UTF-8.

OpenAFS for Windows implements an SMB server which is used as a gateway to the AFS filesystem.  Because of limitations of the SMB implementation in pre-1.5.50 releases, Windows stored all files into AFS using OEM code pages such as CP437 (United States) or CP850 (Western Europe).  These code pages are incompatible with the ISO Latin-1 or Unicode (UTF-8) character sets typically used as the default on UNIX systems in both the United States and Western Europe.  Filenames stored by OpenAFS for Windows were therefore unreadable on UNIX systems if they include any of the following characters:

     [Ç]  128  08/00  200  80  C cedilla

     [ü]  129  08/01  201  81  u diaeresis

     [é]  130  08/02  202  82  e acute

     [â]  131  08/03  203  83  a circumflex

     [ä]  132  08/04  204  84  a diaeresis

     [à]  133  08/05  205  85  a grave

     [å]  134  08/06  206  86  a ring

     [ç]  135  08/07  207  87  c cedilla

     [ê]  136  08/08  210  88  e circumflex

     [ë]  137  08/09  211  89  e diaeresis

     [è]  138  08/10  212  8A  e grave

     [ï]  139  08/11  213  8B  i diaeresis

     [î]  140  08/12  214  8C  i circumflex

     [ì]  141  08/13  215  8D  i grave

     [Ä]  142  08/14  216  8E  A diaeresis

     [Å]  143  08/15  217  8F  A ring

     [É]  144  09/00  220  90  E acute

     [æ]  145  09/01  221  91  ae diphthong

     [Æ]  146  09/02  222  92  AE diphthong

     [ô]  147  09/03  223  93  o circumflex

     [ö]  148  09/04  224  94  o diaeresis

     [ò]  149  09/05  225  95  o grave

     [û]  150  09/06  226  96  u circumflex

     [ù]  151  09/07  227  97  u grave

     [ÿ]  152  09/08  230  98  y diaeresis

     [Ö]  153  09/09  231  99  O diaeresis

     [Ü]  154  09/10  232  9A  U diaeresis

     [ø]  155  09/11  233  9B  o slash

     [£]  156  09/12  234  9C  Pound sterling sign

     [Ø]  157  09/13  235  9D  O slash

     [×]  158  09/14  236  9E  Multiplication sign

     [ƒ]  159  09/15  237  9F  Florin sign

 

The pre-1.5.50 OpenAFS Client provided an optional registry value, StoreAnsiFilenames, that could be set to instruct OpenAFS to store filenames using the ANSI Code Page instead of the OEM Code Page.  The ANSI Code Page is a compatible superset of Latin-1.  This setting is not the default setting because making this change would prevent OpenAFS for Windows from being able to access filenames containing the above characters which were created without this setting.

All versions of OpenAFS for Windows 1.5.50 and above exchange file names with Microsoft Windows using the Unicode character set. All file names are read from and stored to AFS file servers using the UTF-8 encoding of Unicode. As a result the StoreAnsiFilenames option is no longer supported.

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