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+Note: All files in this directory are DOS formatted (CRLF line terminator).
+
+!!! VIRUS WARNING !!! I do not know if VALIDCHR.COM is virus free !!!
+I think that my system is virus free here because I do not run any games
+or other copied software. I only run Shareware/Freeware etc. from CD-ROMs
+or from registered disks, however I do not use viral scanners because
+I have not registered any (I consider `having no sex' is better than
+`testing for AIDS on a regular basis', if you know what I mean).
+
+This is VALIDCHR, a little DOS program I wrote to create
+an apropriate `valid chars =' config parameter.
+It is freeware and is thought to be distributed freely with Samba.
+
+WARNING:
+	Your SMB driver may use another character map as the one VALIDCHR
+	sees. The only way you can tell this is that some file names fail.
+	Under Win95 everything is fine, though.
+
+Usage:
+	c:
+	mkdir junk_dir
+	cd junk_dir
+	a:validchr > a:output.log
+	cd ..
+	rmdir junk_dir
+
+Siedeffects:
+	Files named *.TST may be deleted.
+
+Verification:
+	For diagnostic purpose you can run VALIDCHR on a Samba mounted drive.
+	Then you can use unix diff to compare the output of the network and
+	the hard drive. These two outputs usually differ! However there
+	should be few differences. I get following on Win95 (c: visa e:)
+	104c104
+	< 152: length 0
+	---
+	> 152: 95
+	(diff line for `valid chars =' deleted because it's uninteresting)
+	You can see, `y diaresis' can be mapped on the network drive while
+	it cannot be mapped on the hard drive. Everything else is identical.
+	However this gives a hint that one can improve the mapping.
+
+Bugs:
+	Yes, probably some.
+
+
+VALIDCHR must be run on the system which character mapping should be probed.
+It must be run on the hard drive for this. VALIDCHR ALTERS THE CURRENT
+DIRECTORY AND REMOVES SOME FILES, SO ALWAYS RUN IT IN A junk DIRECTORY !!!
+You should redirect the output of VALIDCHR. At the end of the output is a
+line like
+   valid chars = x:y y:x x:x ... a:b c ...
+which is suitable for your smb.conf file. (you should remove the DOS CR
+character, because DOS uses CRLF while Unix uses LF only.)
+
+Note that some mappings at the beginning of the `valid chars =' line like
+A:B B:A B:B
+might look a little bit strange to you, however sometimes character A
+has to be mapped to character B independently of a default mapping
+to uppercase or lowercase while character B must not be touched. I found
+this out the hard way ... Consider it a crude workaround, because Samba
+lacks the possibility to map characters in one direction only!
+
+VALIDCHR usually issues one warning for character 32.
+You may ignore these and any other warnings.
+
+VALIDCHR does not test for character NUL (this is the directory end marker).
+
+validchr.c is the source code to validchr.com
+	You may do anything with the source code (copy, change, sell, burn)
+validchr.com is a Borland C compiled binary.
+	Beware, it may contain a virus (if my system contains one).
+nwdos70.out is the output of an VALIDCHR-run under Novell DOS 7.0
+	while no codepage (no display.sys) was active.
+msdos70.out is the output of an VALIDCHR-run under MS-DOS 7.0 (Win95 DOS)
+	while codepage 850 was active.
+
+I have no other MS-DOS systems at home currently.
+(I have access to MS-DOS 3.0, 3.2, 3.3, 5.0 and 6.22, however I have no time
+ to run VALIDCHR there)
+
+Some words to the output
+(for people not fammiliar with programming language C):
+
+probed_char:	[text] mapped_char
+
+probed_char	is the character probed to be written to disk
+text		may be empty or contain:
+		open	File could not be opened.
+		close	File could not be closed (should not happen)
+		length	File name was shortened (usually occurs on SPC) 
+		unlink	File cannot be unlinked (usually when open fails)
+mapped_char	is the character which is used by MS-DOS in the directory
+		This is usually the uppercase character.
+		The mapped character is 0 if something failed (you may say
+		that the character is not supported)
+
+The last line in the output is documented in the smb.conf manual page ;)
+
+tino@augsburg.net