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ksmbd: make utf-8 file name comparison work in __caseless_lookup()
Case-insensitive file name lookups with __caseless_lookup() use strncasecmp() for file name comparison. strncasecmp() assumes an ISO8859-1-compatible encoding, which is not the case here as UTF-8 is always used. As such, use of strncasecmp() here produces correct results only if both strings use characters in the ASCII range only. Fix this by using utf8_strncasecmp() if CONFIG_UNICODE is set. On failure or if CONFIG_UNICODE is not set, fallback to strncasecmp(). Also, as we are adding an include for `linux/unicode.h', include it in `fs/ksmbd/connection.h' as well since it should be explicit there. Signed-off-by: Atte Heikkilä <atteh.mailbox@gmail.com> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
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Atte Heikkilä
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Steve French
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Oct 5, 2022
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