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ksmbd: send proper error response in smb2_tree_connect() 

commit cdfb2fef52 upstream.

Currently, smb2_tree_connect doesn't send an error response packet on
error.

This causes libsmb2 to skip the specific error code and fail with the
following:
 smb2_service failed with : Failed to parse fixed part of command
 payload. Unexpected size of Error reply. Expected 9, got 8

Signed-off-by: Marios Makassikis <mmakassikis@freebox.fr>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marios Makassikis 2022-12-23 11:59:31 +01:00 committed by Greg Kroah-Hartman
parent 4cd4317220
commit ad678f30ac
1 changed files with 5 additions and 2 deletions
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7
fs/ksmbd/smb2pdu.c
View File

@ -1926,13 +1926,13 @@ int smb2_tree_connect(struct ksmbd_work *work)
if (conn->posix_ext_supported) if (conn->posix_ext_supported)
status.tree_conn->posix_extensions = true; status.tree_conn->posix_extensions = true;
out_err1:
rsp->StructureSize = cpu_to_le16(16); rsp->StructureSize = cpu_to_le16(16);
inc_rfc1001_len(work->response_buf, 16);
out_err1:
rsp->Capabilities = 0; rsp->Capabilities = 0;
rsp->Reserved = 0; rsp->Reserved = 0;
/* default manual caching */ /* default manual caching */
rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING;
inc_rfc1001_len(work->response_buf, 16);
if (!IS_ERR(treename)) if (!IS_ERR(treename))
kfree(treename); kfree(treename);
@ -1965,6 +1965,9 @@ int smb2_tree_connect(struct ksmbd_work *work)
rsp->hdr.Status = STATUS_ACCESS_DENIED; rsp->hdr.Status = STATUS_ACCESS_DENIED;
} }
if (status.ret != KSMBD_TREE_CONN_STATUS_OK)
smb2_set_err_rsp(work);
return rc; return rc;
} }