Steve French e4be320eec smb3: fix broken cached reads when posix locks ... Mandatory locking is enforced for cached reads, which violates default posix semantics, and also it is enforced inconsistently. This affected recent versions of libreoffice, and can be demonstrated by opening a file twice from the same client, locking it from handle one and trying to read from it from handle two (which fails, returning EACCES). There is already a mount option "forcemandatorylock" (which defaults to off), so with this change only when the user intentionally specifies "forcemandatorylock" on mount will we break posix semantics on read to a locked range (ie we will only fail in this case, if the user mounts with "forcemandatorylock"). An earlier patch fixed the write path. Fixes: 85160e03a7 ("CIFS: Implement caching mechanism for mandatory brlocks") Cc: stable@vger.kernel.org Cc: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: David Howells <dhowells@redhat.com> Reported-by: abartlet@samba.org Reported-by: Kevin Ottens <kevin.ottens@enioka.com> Signed-off-by: Steve French <stfrench@microsoft.com>		2024-08-18 17:01:06 -05:00
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client	smb3: fix broken cached reads when posix locks	2024-08-18 17:01:06 -05:00
common	smb: smb2pdu.h: Use static_assert() to check struct sizes	2024-08-15 16:06:55 -05:00
server	ksmbd: override fsids for smb2_query_info()	2024-08-08 22:54:09 -05:00
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