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fs/cifs: don't translate SFM_SLASH (U+F026) to backslash

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[ Upstream commit c15e3f19a6 ]

When a Mac client saves an item containing a backslash to a file server
the backslash is represented in the CIFS/SMB protocol as as U+F026.
Before this change, listing a directory containing an item with a
backslash in its name will return that item with the backslash
represented with a true backslash character (U+005C) because
convert_sfm_character mapped U+F026 to U+005C when interpretting the
CIFS/SMB protocol response.  However, attempting to open or stat the
path using a true backslash will result in an error because
convert_to_sfm_char does not map U+005C back to U+F026 causing the
CIFS/SMB request to be made with the backslash represented as U+005C.

This change simply prevents the U+F026 to U+005C conversion from
happenning.  This is analogous to how the code does not do any
translation of UNI_SLASH (U+F000).

Signed-off-by: Jon Kuhn <jkuhn@barracuda.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jon Kuhn
2018-07-09 14:33:14 +00:00
committed by Greg Kroah-Hartman
parent ca8aa9f49b
commit 2b2ccb29f3
1 changed files with 0 additions and 3 deletions
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3
fs/cifs/cifs_unicode.c
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@@ -101,9 +101,6 @@ convert_sfm_char(const __u16 src_char, char *target)
case SFM_LESSTHAN:
*target = '<';
break;
case SFM_SLASH:
*target = '\\';
break;
case SFM_SPACE:
*target = ' ';
break;