| Message ID | 20221223105930.1405307-1-mmakassikis@freebox.fr |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] ksmbd: send proper error response in smb2_tree_connect() | expand |
2022-12-23 19:59 GMT+09:00, Marios Makassikis <mmakassikis@freebox.fr>: > 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> Thanks!
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index 14d7f3599c63..38fbda52e06f 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -1928,13 +1928,13 @@ int smb2_tree_connect(struct ksmbd_work *work) if (conn->posix_ext_supported) status.tree_conn->posix_extensions = true; -out_err1: rsp->StructureSize = cpu_to_le16(16); + inc_rfc1001_len(work->response_buf, 16); +out_err1: rsp->Capabilities = 0; rsp->Reserved = 0; /* default manual caching */ rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; - inc_rfc1001_len(work->response_buf, 16); if (!IS_ERR(treename)) kfree(treename); @@ -1967,6 +1967,9 @@ int smb2_tree_connect(struct ksmbd_work *work) rsp->hdr.Status = STATUS_ACCESS_DENIED; } + if (status.ret != KSMBD_TREE_CONN_STATUS_OK) + smb2_set_err_rsp(work); + return rc; }
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> --- v2: move smb2_set_err_rsp() call to the end to simplify, as suggested by Namjae fs/ksmbd/smb2pdu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)