From patchwork Mon Mar 21 16:08:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paulo Alcantara X-Patchwork-Id: 12787507 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75BCAC433FE for ; Mon, 21 Mar 2022 16:09:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350900AbiCUQLR (ORCPT ); Mon, 21 Mar 2022 12:11:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350859AbiCUQKo (ORCPT ); Mon, 21 Mar 2022 12:10:44 -0400 Received: from mx.cjr.nz (mx.cjr.nz [51.158.111.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77A4C3193F for ; Mon, 21 Mar 2022 09:09:01 -0700 (PDT) Received: from authenticated-user (mx.cjr.nz [51.158.111.142]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: pc) by mx.cjr.nz (Postfix) with ESMTPSA id 9A16180851; Mon, 21 Mar 2022 16:08:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cjr.nz; s=dkim; t=1647878939; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=gtahG5C2jWIq4vJ9FySEQNzX6X+Ihz9qutsozlv3T6I=; b=wAPdOqzy8hIJPKk8+lUrVa1uiG5N5UDMk1v4toHMPVj28YlN99EAJsoDfMx1qAKrwIl4Vk Zi/WURzcA8/8DsTQCYHG3/3IFalzxAWDpeNlPDL4BAeZiXLQn1NWLU5sf3XBKsjvbxkEwt klXR1Gw3O5MyfX7B+uEKV4/bOStOeYYLge2suUCwYxIsv7jPGYkemSoaH84YVSHpevXUZc w8CPbn3GNcezr2dhxWWo1qM06K8XoumNA6+pdziHoVpKdaZsBIv/0A9RSbohJkTD4uypXC uDvVKNmmtX/tKRJAcCOX/xUcUmK4f1OntgBNRLPxXsCzXfTln4mwAoyrWNLsgA== From: Paulo Alcantara To: linux-cifs@vger.kernel.org, smfrench@gmail.com, linkinjeon@kernel.org Cc: Paulo Alcantara Subject: [PATCH 1/2] cifs: fix bad fids sent over wire Date: Mon, 21 Mar 2022 13:08:25 -0300 Message-Id: <20220321160826.30814-1-pc@cjr.nz> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org The client used to partially convert the fids to le64, while storing or sending them by using host endianness. This broke the client on big-endian machines. Instead of converting them to le64, store them as opaque integers and then avoid byteswapping when sending them over wire. Signed-off-by: Paulo Alcantara (SUSE) Reviewed-By: Tom Talpey --- fs/cifs/smb2misc.c | 4 +-- fs/cifs/smb2ops.c | 8 ++--- fs/cifs/smb2pdu.c | 63 +++++++++++++++++---------------------- fs/smbfs_common/smb2pdu.h | 24 +++++++-------- 4 files changed, 46 insertions(+), 53 deletions(-) diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index b25623e3fe3d..3b7c636be377 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -832,8 +832,8 @@ smb2_handle_cancelled_mid(struct mid_q_entry *mid, struct TCP_Server_Info *serve rc = __smb2_handle_cancelled_cmd(tcon, le16_to_cpu(hdr->Command), le64_to_cpu(hdr->MessageId), - le64_to_cpu(rsp->PersistentFileId), - le64_to_cpu(rsp->VolatileFileId)); + rsp->PersistentFileId, + rsp->VolatileFileId); if (rc) cifs_put_tcon(tcon); diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 0ecd6e1832a1..c122530e5043 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -900,8 +900,8 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, atomic_inc(&tcon->num_remote_opens); o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; - oparms.fid->persistent_fid = le64_to_cpu(o_rsp->PersistentFileId); - oparms.fid->volatile_fid = le64_to_cpu(o_rsp->VolatileFileId); + oparms.fid->persistent_fid = o_rsp->PersistentFileId; + oparms.fid->volatile_fid = o_rsp->VolatileFileId; #ifdef CONFIG_CIFS_DEBUG2 oparms.fid->mid = le64_to_cpu(o_rsp->hdr.MessageId); #endif /* CIFS_DEBUG2 */ @@ -2410,8 +2410,8 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc); goto qdf_free; } - fid->persistent_fid = le64_to_cpu(op_rsp->PersistentFileId); - fid->volatile_fid = le64_to_cpu(op_rsp->VolatileFileId); + fid->persistent_fid = op_rsp->PersistentFileId; + fid->volatile_fid = op_rsp->VolatileFileId; /* Anything else than ENODATA means a genuine error */ if (rc && rc != -ENODATA) { diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 7e7909b1ae11..7e15b0092243 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -2734,13 +2734,10 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, goto err_free_req; } - trace_smb3_posix_mkdir_done(xid, le64_to_cpu(rsp->PersistentFileId), - tcon->tid, - ses->Suid, CREATE_NOT_FILE, - FILE_WRITE_ATTRIBUTES); + trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid, + CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES); - SMB2_close(xid, tcon, le64_to_cpu(rsp->PersistentFileId), - le64_to_cpu(rsp->VolatileFileId)); + SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId); /* Eventually save off posix specific response info and timestaps */ @@ -3009,14 +3006,12 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, } else if (rsp == NULL) /* unlikely to happen, but safer to check */ goto creat_exit; else - trace_smb3_open_done(xid, le64_to_cpu(rsp->PersistentFileId), - tcon->tid, - ses->Suid, oparms->create_options, - oparms->desired_access); + trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid, + oparms->create_options, oparms->desired_access); atomic_inc(&tcon->num_remote_opens); - oparms->fid->persistent_fid = le64_to_cpu(rsp->PersistentFileId); - oparms->fid->volatile_fid = le64_to_cpu(rsp->VolatileFileId); + oparms->fid->persistent_fid = rsp->PersistentFileId; + oparms->fid->volatile_fid = rsp->VolatileFileId; oparms->fid->access = oparms->desired_access; #ifdef CONFIG_CIFS_DEBUG2 oparms->fid->mid = le64_to_cpu(rsp->hdr.MessageId); @@ -3313,8 +3308,8 @@ SMB2_close_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, if (rc) return rc; - req->PersistentFileId = cpu_to_le64(persistent_fid); - req->VolatileFileId = cpu_to_le64(volatile_fid); + req->PersistentFileId = persistent_fid; + req->VolatileFileId = volatile_fid; if (query_attrs) req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; else @@ -3677,8 +3672,8 @@ SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst, if (rc) return rc; - req->PersistentFileId = cpu_to_le64(persistent_fid); - req->VolatileFileId = cpu_to_le64(volatile_fid); + req->PersistentFileId = persistent_fid; + req->VolatileFileId = volatile_fid; /* See note 354 of MS-SMB2, 64K max */ req->OutputBufferLength = cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE); @@ -3951,8 +3946,8 @@ SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst, if (rc) return rc; - req->PersistentFileId = cpu_to_le64(persistent_fid); - req->VolatileFileId = cpu_to_le64(volatile_fid); + req->PersistentFileId = persistent_fid; + req->VolatileFileId = volatile_fid; iov[0].iov_base = (char *)req; iov[0].iov_len = total_len; @@ -4033,8 +4028,8 @@ smb2_new_read_req(void **buf, unsigned int *total_len, shdr = &req->hdr; shdr->Id.SyncId.ProcessId = cpu_to_le32(io_parms->pid); - req->PersistentFileId = cpu_to_le64(io_parms->persistent_fid); - req->VolatileFileId = cpu_to_le64(io_parms->volatile_fid); + req->PersistentFileId = io_parms->persistent_fid; + req->VolatileFileId = io_parms->volatile_fid; req->ReadChannelInfoOffset = 0; /* reserved */ req->ReadChannelInfoLength = 0; /* reserved */ req->Channel = 0; /* reserved */ @@ -4094,8 +4089,8 @@ smb2_new_read_req(void **buf, unsigned int *total_len, */ shdr->SessionId = cpu_to_le64(0xFFFFFFFFFFFFFFFF); shdr->Id.SyncId.TreeId = cpu_to_le32(0xFFFFFFFF); - req->PersistentFileId = cpu_to_le64(0xFFFFFFFFFFFFFFFF); - req->VolatileFileId = cpu_to_le64(0xFFFFFFFFFFFFFFFF); + req->PersistentFileId = (u64)-1; + req->VolatileFileId = (u64)-1; } } if (remaining_bytes > io_parms->length) @@ -4307,21 +4302,19 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE); cifs_dbg(VFS, "Send error in read = %d\n", rc); trace_smb3_read_err(xid, - le64_to_cpu(req->PersistentFileId), + req->PersistentFileId, io_parms->tcon->tid, ses->Suid, io_parms->offset, io_parms->length, rc); } else - trace_smb3_read_done(xid, - le64_to_cpu(req->PersistentFileId), - io_parms->tcon->tid, ses->Suid, - io_parms->offset, 0); + trace_smb3_read_done(xid, req->PersistentFileId, io_parms->tcon->tid, + ses->Suid, io_parms->offset, 0); free_rsp_buf(resp_buftype, rsp_iov.iov_base); cifs_small_buf_release(req); return rc == -ENODATA ? 0 : rc; } else trace_smb3_read_done(xid, - le64_to_cpu(req->PersistentFileId), + req->PersistentFileId, io_parms->tcon->tid, ses->Suid, io_parms->offset, io_parms->length); @@ -4463,8 +4456,8 @@ smb2_async_writev(struct cifs_writedata *wdata, shdr = (struct smb2_hdr *)req; shdr->Id.SyncId.ProcessId = cpu_to_le32(wdata->cfile->pid); - req->PersistentFileId = cpu_to_le64(wdata->cfile->fid.persistent_fid); - req->VolatileFileId = cpu_to_le64(wdata->cfile->fid.volatile_fid); + req->PersistentFileId = wdata->cfile->fid.persistent_fid; + req->VolatileFileId = wdata->cfile->fid.volatile_fid; req->WriteChannelInfoOffset = 0; req->WriteChannelInfoLength = 0; req->Channel = 0; @@ -4562,7 +4555,7 @@ smb2_async_writev(struct cifs_writedata *wdata, if (rc) { trace_smb3_write_err(0 /* no xid */, - le64_to_cpu(req->PersistentFileId), + req->PersistentFileId, tcon->tid, tcon->ses->Suid, wdata->offset, wdata->bytes, rc); kref_put(&wdata->refcount, release); @@ -4615,8 +4608,8 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, req->hdr.Id.SyncId.ProcessId = cpu_to_le32(io_parms->pid); - req->PersistentFileId = cpu_to_le64(io_parms->persistent_fid); - req->VolatileFileId = cpu_to_le64(io_parms->volatile_fid); + req->PersistentFileId = io_parms->persistent_fid; + req->VolatileFileId = io_parms->volatile_fid; req->WriteChannelInfoOffset = 0; req->WriteChannelInfoLength = 0; req->Channel = 0; @@ -4645,7 +4638,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, if (rc) { trace_smb3_write_err(xid, - le64_to_cpu(req->PersistentFileId), + req->PersistentFileId, io_parms->tcon->tid, io_parms->tcon->ses->Suid, io_parms->offset, io_parms->length, rc); @@ -4654,7 +4647,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, } else { *nbytes = le32_to_cpu(rsp->DataLength); trace_smb3_write_done(xid, - le64_to_cpu(req->PersistentFileId), + req->PersistentFileId, io_parms->tcon->tid, io_parms->tcon->ses->Suid, io_parms->offset, *nbytes); diff --git a/fs/smbfs_common/smb2pdu.h b/fs/smbfs_common/smb2pdu.h index 38b8fc514860..6653b4be4556 100644 --- a/fs/smbfs_common/smb2pdu.h +++ b/fs/smbfs_common/smb2pdu.h @@ -608,8 +608,8 @@ struct smb2_close_req { __le16 StructureSize; /* Must be 24 */ __le16 Flags; __le32 Reserved; - __le64 PersistentFileId; /* opaque endianness */ - __le64 VolatileFileId; /* opaque endianness */ + __u64 PersistentFileId; /* opaque endianness */ + __u64 VolatileFileId; /* opaque endianness */ } __packed; /* @@ -653,8 +653,8 @@ struct smb2_read_req { __u8 Flags; /* MBZ unless SMB3.02 or later */ __le32 Length; __le64 Offset; - __le64 PersistentFileId; - __le64 VolatileFileId; + __u64 PersistentFileId; + __u64 VolatileFileId; __le32 MinimumCount; __le32 Channel; /* MBZ except for SMB3 or later */ __le32 RemainingBytes; @@ -692,8 +692,8 @@ struct smb2_write_req { __le16 DataOffset; /* offset from start of SMB2 header to write data */ __le32 Length; __le64 Offset; - __le64 PersistentFileId; /* opaque endianness */ - __le64 VolatileFileId; /* opaque endianness */ + __u64 PersistentFileId; /* opaque endianness */ + __u64 VolatileFileId; /* opaque endianness */ __le32 Channel; /* MBZ unless SMB3.02 or later */ __le32 RemainingBytes; __le16 WriteChannelInfoOffset; @@ -722,8 +722,8 @@ struct smb2_flush_req { __le16 StructureSize; /* Must be 24 */ __le16 Reserved1; __le32 Reserved2; - __le64 PersistentFileId; - __le64 VolatileFileId; + __u64 PersistentFileId; + __u64 VolatileFileId; } __packed; struct smb2_flush_rsp { @@ -769,8 +769,8 @@ struct smb2_change_notify_req { __le16 StructureSize; __le16 Flags; __le32 OutputBufferLength; - __le64 PersistentFileId; /* opaque endianness */ - __le64 VolatileFileId; /* opaque endianness */ + __u64 PersistentFileId; /* opaque endianness */ + __u64 VolatileFileId; /* opaque endianness */ __le32 CompletionFilter; __u32 Reserved; } __packed; @@ -978,8 +978,8 @@ struct smb2_create_rsp { __le64 EndofFile; __le32 FileAttributes; __le32 Reserved2; - __le64 PersistentFileId; - __le64 VolatileFileId; + __u64 PersistentFileId; + __u64 VolatileFileId; __le32 CreateContextsOffset; __le32 CreateContextsLength; __u8 Buffer[1];