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2024-03-12ksmbd: add support for durable handles v1/v2Namjae Jeon1-0/+1
Durable file handles allow reopening a file preserved on a short network outage and transparent client reconnection within a timeout. i.e. Durable handles aren't necessarily cleaned up when the opening process terminates. This patch add support for durable handle version 1 and 2. To prove durable handles work on ksmbd, I have tested this patch with the following smbtorture tests: smb2.durable-open.open-oplock smb2.durable-open.open-lease smb2.durable-open.reopen1 smb2.durable-open.reopen1a smb2.durable-open.reopen1a-lease smb2.durable-open.reopen2 smb2.durable-open.reopen2a smb2.durable-open.reopen2-lease smb2.durable-open.reopen2-lease-v2 smb2.durable-open.reopen3 smb2.durable-open.reopen4 smb2.durable-open.delete_on_close2 smb2.durable-open.file-position smb2.durable-open.lease smb2.durable-open.alloc-size smb2.durable-open.read-only smb2.durable-v2-open.create-blob smb2.durable-v2-open.open-oplock smb2.durable-v2-open.open-lease smb2.durable-v2-open.reopen1 smb2.durable-v2-open.reopen1a smb2.durable-v2-open.reopen1a-lease smb2.durable-v2-open.reopen2 smb2.durable-v2-open.reopen2b Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2024-03-12ksmbd: mark SMB2_SESSION_EXPIRED to session when destroying previous sessionNamjae Jeon2-1/+29
Currently ksmbd exit connection as well destroying previous session. When testing durable handle feaure, I found that destroy_previous_session() should destroy only session, i.e. the connection should be still alive. This patch mark SMB2_SESSION_EXPIRED on the previous session to be destroyed later and not used anymore. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2024-01-09ksmbd: Remove usage of the deprecated ida_simple_xx() APIChristophe JAILLET1-15/+6
ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove(). This is less verbose. Note that the upper limit of ida_simple_get() is exclusive, but the one of ida_alloc_range() is inclusive. So change a 0xFFFFFFFF into a 0xFFFFFFFE in order to keep the same behavior. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-10-22ksmbd: Remove unused field in ksmbd_user structCheng-Han Wu1-1/+0
fs/smb/server/mgmt/user_config.h:21: Remove the unused field 'failed_login_count' from the ksmbd_user struct. Signed-off-by: Cheng-Han Wu <hank20010209@gmail.com> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-10-04ksmbd: fix race condition between tree conn lookup and disconnectNamjae Jeon4-5/+50
if thread A in smb2_write is using work-tcon, other thread B use smb2_tree_disconnect free the tcon, then thread A will use free'd tcon. Time + Thread A | Thread A smb2_write | smb2_tree_disconnect | | | kfree(tree_conn) | // UAF! | work->tcon->share_conf | + This patch add state, reference count and lock for tree conn to fix race condition issue. Reported-by: luosili <rootlab@huawei.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-10-04ksmbd: fix race condition between session lookup and expireNamjae Jeon1-3/+7
Thread A + Thread B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sessions, sess->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // UAF! | sess->last_active = jiffies | + This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session. Reported-by: luosili <rootlab@huawei.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-08-29ksmbd: fix `force create mode' and `force directory mode'Atte Heikkilä1-18/+11
`force create mode' and `force directory mode' should be bitwise ORed with the perms after `create mask' and `directory mask' have been applied, respectively. Signed-off-by: Atte Heikkilä <atteh.mailbox@gmail.com> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-06-26ksmbd: remove unused ksmbd_tree_conn_share functionNamjae Jeon2-14/+0
Remove unused ksmbd_tree_conn_share function. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-05-24smb: move client and server files to common directory fs/smbSteve French10-0/+1245
Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko and helper modules) to new fs/smb subdirectory: fs/cifs --> fs/smb/client fs/ksmbd --> fs/smb/server fs/smbfs_common --> fs/smb/common Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>