From: Namjae Jeon <linkinjeon@kernel.org>
To: sashal@kernel.org, gregkh@linuxfoundation.org, stable@vger.kernel.org
Cc: smfrench@gmail.com, Namjae Jeon <linkinjeon@kernel.org>,
Steve French <stfrench@microsoft.com>
Subject: [PATCH v2 5.15.y 4/8] ksmbd: downgrade RWH lease caching state to RH for directory
Date: Wed, 27 Dec 2023 19:26:01 +0900 [thread overview]
Message-ID: <20231227102605.4766-5-linkinjeon@kernel.org> (raw)
In-Reply-To: <20231227102605.4766-1-linkinjeon@kernel.org>
[ Upstream commit eb547407f3572d2110cb1194ecd8865b3371a7a4 ]
RWH(Read + Write + Handle) caching state is not supported for directory.
ksmbd downgrade it to RH for directory if client send RWH caching lease
state.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
---
fs/ksmbd/oplock.c | 9 +++++++--
fs/ksmbd/oplock.h | 2 +-
fs/ksmbd/smb2pdu.c | 8 ++++----
3 files changed, 12 insertions(+), 7 deletions(-)
diff --git a/fs/ksmbd/oplock.c b/fs/ksmbd/oplock.c
index 24716dbe7108..600312e2c6c2 100644
--- a/fs/ksmbd/oplock.c
+++ b/fs/ksmbd/oplock.c
@@ -1398,10 +1398,11 @@ void create_lease_buf(u8 *rbuf, struct lease *lease)
/**
* parse_lease_state() - parse lease context containted in file open request
* @open_req: buffer containing smb2 file open(create) request
+ * @is_dir: whether leasing file is directory
*
* Return: oplock state, -ENOENT if create lease context not found
*/
-struct lease_ctx_info *parse_lease_state(void *open_req)
+struct lease_ctx_info *parse_lease_state(void *open_req, bool is_dir)
{
struct create_context *cc;
struct smb2_create_req *req = (struct smb2_create_req *)open_req;
@@ -1419,7 +1420,11 @@ struct lease_ctx_info *parse_lease_state(void *open_req)
struct create_lease_v2 *lc = (struct create_lease_v2 *)cc;
memcpy(lreq->lease_key, lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
- lreq->req_state = lc->lcontext.LeaseState;
+ if (is_dir)
+ lreq->req_state = lc->lcontext.LeaseState &
+ ~SMB2_LEASE_WRITE_CACHING_LE;
+ else
+ lreq->req_state = lc->lcontext.LeaseState;
lreq->flags = lc->lcontext.LeaseFlags;
lreq->epoch = lc->lcontext.Epoch;
lreq->duration = lc->lcontext.LeaseDuration;
diff --git a/fs/ksmbd/oplock.h b/fs/ksmbd/oplock.h
index ad31439c61fe..672127318c75 100644
--- a/fs/ksmbd/oplock.h
+++ b/fs/ksmbd/oplock.h
@@ -109,7 +109,7 @@ void opinfo_put(struct oplock_info *opinfo);
/* Lease related functions */
void create_lease_buf(u8 *rbuf, struct lease *lease);
-struct lease_ctx_info *parse_lease_state(void *open_req);
+struct lease_ctx_info *parse_lease_state(void *open_req, bool is_dir);
__u8 smb2_map_lease_to_oplock(__le32 lease_state);
int lease_read_to_write(struct oplock_info *opinfo);
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index 7ce5746f9167..6a3cd6ea3af1 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -2729,10 +2729,6 @@ int smb2_open(struct ksmbd_work *work)
}
}
- req_op_level = req->RequestedOplockLevel;
- if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
- lc = parse_lease_state(req);
-
if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE_LE)) {
pr_err("Invalid impersonationlevel : 0x%x\n",
le32_to_cpu(req->ImpersonationLevel));
@@ -3212,6 +3208,10 @@ int smb2_open(struct ksmbd_work *work)
need_truncate = 1;
}
+ req_op_level = req->RequestedOplockLevel;
+ if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
+ lc = parse_lease_state(req, S_ISDIR(file_inode(filp)->i_mode));
+
share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
(req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
--
2.25.1
next prev parent reply other threads:[~2023-12-27 10:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-27 10:25 [PATCH v2 5.15.y 0/8] Additional ksmbd backport patches for linux-5.15.y Namjae Jeon
2023-12-27 10:25 ` [PATCH v2 5.15.y 1/8] ksmbd: have a dependency on cifs ARC4 Namjae Jeon
2023-12-27 10:25 ` [PATCH v2 5.15.y 2/8] ksmbd: set epoch in create context v2 lease Namjae Jeon
2023-12-27 10:26 ` [PATCH v2 5.15.y 3/8] ksmbd: set v2 lease capability Namjae Jeon
2023-12-27 10:26 ` Namjae Jeon [this message]
2023-12-27 10:26 ` [PATCH v2 5.15.y 5/8] ksmbd: send v2 lease break notification for directory Namjae Jeon
2023-12-27 10:26 ` [PATCH v2 5.15.y 6/8] ksmbd: lazy v2 lease break on smb2_write() Namjae Jeon
2023-12-27 10:26 ` [PATCH v2 5.15.y 7/8] ksmbd: avoid duplicate opinfo_put() call on error of smb21_lease_break_ack() Namjae Jeon
2023-12-27 10:26 ` [PATCH v2 5.15.y 8/8] ksmbd: fix wrong allocation size update in smb2_open() Namjae Jeon
2023-12-30 11:04 ` [PATCH v2 5.15.y 0/8] Additional ksmbd backport patches for linux-5.15.y Greg KH
2023-12-30 13:53 ` Namjae Jeon
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