From: Ralph Boehme <slow@samba.org>
To: linux-cifs@vger.kernel.org
Cc: Ralph Boehme <slow@samba.org>,
Namjae Jeon <linkinjeon@kernel.org>, Tom Talpey <tom@talpey.com>,
Ronnie Sahlberg <ronniesahlberg@gmail.com>,
Steve French <smfrench@gmail.com>,
Hyunchul Lee <hyc.lee@gmail.com>
Subject: [PATCH v7 7/9] ksmdb: make smb2_get_ksmbd_tcon() callable with chained PDUs
Date: Tue, 5 Oct 2021 07:03:41 +0200 [thread overview]
Message-ID: <20211005050343.268514-8-slow@samba.org> (raw)
In-Reply-To: <20211005050343.268514-1-slow@samba.org>
Also track the tcon id of compound requests.
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Tom Talpey <tom@talpey.com>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Steve French <smfrench@gmail.com>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Ralph Boehme <slow@samba.org>
---
fs/ksmbd/ksmbd_work.h | 1 +
fs/ksmbd/smb2pdu.c | 14 +++++++++++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/fs/ksmbd/ksmbd_work.h b/fs/ksmbd/ksmbd_work.h
index f7156bc50049..91363d508909 100644
--- a/fs/ksmbd/ksmbd_work.h
+++ b/fs/ksmbd/ksmbd_work.h
@@ -46,6 +46,7 @@ struct ksmbd_work {
u64 compound_fid;
u64 compound_pfid;
u64 compound_sid;
+ u32 compound_tid;
const struct cred *saved_cred;
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index e10ddc1fce09..1755a524beb3 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -97,7 +97,6 @@ int smb2_get_ksmbd_tcon(struct ksmbd_work *work)
unsigned int cmd = le16_to_cpu(req_hdr->Command);
int tree_id;
- work->tcon = NULL;
if (cmd == SMB2_TREE_CONNECT_HE ||
cmd == SMB2_CANCEL_HE ||
cmd == SMB2_LOGOFF_HE) {
@@ -110,13 +109,26 @@ int smb2_get_ksmbd_tcon(struct ksmbd_work *work)
return -ENOENT;
}
+ if (req_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS) {
+ if (!work->tcon) {
+ pr_err("Missing tcon\n");
+ return -EINVAL;
+ }
+ return 1;
+ }
+
+ work->tcon = NULL;
+ work->compound_tid = 0;
+
tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId);
+
work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id);
if (!work->tcon) {
pr_err("Invalid tid %d\n", tree_id);
return -EINVAL;
}
+ work->compound_tid = tree_id;
return 1;
}
--
2.31.1
next prev parent reply other threads:[~2021-10-05 5:25 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-05 5:03 [PATCH v7 0/9] Buffer validation and compound handling patches Ralph Boehme
2021-10-05 5:03 ` [PATCH v7 1/9] ksmbd: use ksmbd_req_buf_next() in ksmbd_verify_smb_message() Ralph Boehme
2021-10-05 7:26 ` Namjae Jeon
2021-10-05 5:03 ` [PATCH v7 2/9] ksmbd: use ksmbd_req_buf_next() in ksmbd_smb2_check_message() Ralph Boehme
2021-10-05 7:27 ` Namjae Jeon
2021-10-05 5:03 ` [PATCH v7 3/9] ksmbd: add and use ksmbd_smb2_cur_pdu_buflen() " Ralph Boehme
2021-10-05 7:29 ` Namjae Jeon
2021-10-05 7:46 ` Ralph Boehme
2021-10-06 23:42 ` Namjae Jeon
2021-10-05 5:03 ` [PATCH v7 4/9] ksmbd: check buffer is big enough to access the SMB2 PUD body size field Ralph Boehme
2021-10-05 5:03 ` [PATCH v7 5/9] ksmdb: validate credit charge after validating SMB2 PDU body size Ralph Boehme
2021-10-05 7:58 ` Namjae Jeon
2021-10-05 5:03 ` [PATCH v7 6/9] ksmdb: use cmd helper variable in smb2_get_ksmbd_tcon() Ralph Boehme
2021-10-05 7:59 ` Namjae Jeon
2021-10-05 5:03 ` Ralph Boehme [this message]
2021-10-05 5:03 ` [PATCH v7 8/9] ksmbd: make smb2_check_user_session() callable for compound PDUs Ralph Boehme
2021-10-05 5:03 ` [PATCH v7 9/9] ksmdb: move session and tcon validation to __process_request() Ralph Boehme
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