diff options
Diffstat (limited to 'fs/cifs/smb2pdu.c')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 955 |
1 files changed, 680 insertions, 275 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 41d9d0725f0..b0b260dbb19 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1,7 +1,7 @@ /* * fs/cifs/smb2pdu.c * - * Copyright (C) International Business Machines Corp., 2009, 2012 + * Copyright (C) International Business Machines Corp., 2009, 2013 * Etersoft, 2012 * Author(s): Steve French (sfrench@us.ibm.com) * Pavel Shilovsky (pshilovsky@samba.org) 2012 @@ -108,19 +108,33 @@ smb2_hdr_assemble(struct smb2_hdr *hdr, __le16 smb2_cmd /* command */ , if (!tcon) goto out; + /* BB FIXME when we do write > 64K add +1 for every 64K in req or rsp */ + /* GLOBAL_CAP_LARGE_MTU will only be set if dialect > SMB2.02 */ + /* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */ + if ((tcon->ses) && + (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) + hdr->CreditCharge = cpu_to_le16(1); + /* else CreditCharge MBZ */ + hdr->TreeId = tcon->tid; /* Uid is not converted */ if (tcon->ses) hdr->SessionId = tcon->ses->Suid; - /* BB check following DFS flags BB */ - /* BB do we have to add check for SHI1005_FLAGS_DFS_ROOT too? */ - if (tcon->share_flags & SHI1005_FLAGS_DFS) - hdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; - /* BB how does SMB2 do case sensitive? */ - /* if (tcon->nocase) - hdr->Flags |= SMBFLG_CASELESS; */ - if (tcon->ses && tcon->ses->server && - (tcon->ses->server->sec_mode & SECMODE_SIGN_REQUIRED)) + + /* + * If we would set SMB2_FLAGS_DFS_OPERATIONS on open we also would have + * to pass the path on the Open SMB prefixed by \\server\share. + * Not sure when we would need to do the augmented path (if ever) and + * setting this flag breaks the SMB2 open operation since it is + * illegal to send an empty path name (without \\server\share prefix) + * when the DFS flag is set in the SMB open header. We could + * consider setting the flag on all operations other than open + * but it is safer to net set it for now. + */ +/* if (tcon->share_flags & SHI1005_FLAGS_DFS) + hdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */ + + if (tcon->ses && tcon->ses->server && tcon->ses->server->sign) hdr->Flags |= SMB2_FLAGS_SIGNED; out: pdu->StructureSize2 = cpu_to_le16(parmsize); @@ -155,8 +169,8 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) if ((smb2_command != SMB2_WRITE) && (smb2_command != SMB2_CREATE) && (smb2_command != SMB2_TREE_DISCONNECT)) { - cFYI(1, "can not send cmd %d while umounting", - smb2_command); + cifs_dbg(FYI, "can not send cmd %d while umounting\n", + smb2_command); return -ENODEV; } } @@ -200,7 +214,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) * back on-line */ if (!tcon->retry) { - cFYI(1, "gave up waiting on reconnect in smb_init"); + cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); return -EHOSTDOWN; } } @@ -227,7 +241,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) cifs_mark_open_files_invalid(tcon); rc = SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nls_codepage); mutex_unlock(&tcon->ses->session_mutex); - cFYI(1, "reconnect tcon rc = %d", rc); + cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); if (rc) goto out; atomic_inc(&tconInfoReconnectCount); @@ -328,34 +342,22 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) struct kvec iov[1]; int rc = 0; int resp_buftype; - struct TCP_Server_Info *server; - unsigned int sec_flags; - u16 temp = 0; + struct TCP_Server_Info *server = ses->server; int blob_offset, blob_length; char *security_blob; int flags = CIFS_NEG_OP; - cFYI(1, "Negotiate protocol"); + cifs_dbg(FYI, "Negotiate protocol\n"); - if (ses->server) - server = ses->server; - else { - rc = -EIO; - return rc; + if (!server) { + WARN(1, "%s: server is NULL!\n", __func__); + return -EIO; } rc = small_smb2_init(SMB2_NEGOTIATE, NULL, (void **) &req); if (rc) return rc; - /* if any of auth flags (ie not sign or seal) are overriden use them */ - if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) - sec_flags = ses->overrideSecFlg; /* BB FIXME fix sign flags?*/ - else /* if override flags set only sign/seal OR them with global auth */ - sec_flags = global_secflags | ses->overrideSecFlg; - - cFYI(1, "sec_flags 0x%x", sec_flags); - req->hdr.SessionId = 0; req->Dialects[0] = cpu_to_le16(ses->server->vals->protocol_id); @@ -364,16 +366,21 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) inc_rfc1001_len(req, 2); /* only one of SMB2 signing flags may be set in SMB2 request */ - if ((sec_flags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) - temp = SMB2_NEGOTIATE_SIGNING_REQUIRED; - else if (sec_flags & CIFSSEC_MAY_SIGN) /* MAY_SIGN is a single flag */ - temp = SMB2_NEGOTIATE_SIGNING_ENABLED; - - req->SecurityMode = cpu_to_le16(temp); + if (ses->sign) + req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); + else if (global_secflags & CIFSSEC_MAY_SIGN) + req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); + else + req->SecurityMode = 0; req->Capabilities = cpu_to_le32(ses->server->vals->req_capabilities); - memcpy(req->ClientGUID, cifs_client_guid, SMB2_CLIENT_GUID_SIZE); + /* ClientGUID must be zero for SMB2.02 dialect */ + if (ses->server->vals->protocol_id == SMB20_PROT_ID) + memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE); + else + memcpy(req->ClientGUID, server->client_guid, + SMB2_CLIENT_GUID_SIZE); iov[0].iov_base = (char *)req; /* 4 for rfc1002 length field */ @@ -389,25 +396,31 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) if (rc != 0) goto neg_exit; - cFYI(1, "mode 0x%x", rsp->SecurityMode); + cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode); /* BB we may eventually want to match the negotiated vs. requested dialect, even though we are only requesting one at a time */ if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) - cFYI(1, "negotiated smb2.0 dialect"); + cifs_dbg(FYI, "negotiated smb2.0 dialect\n"); else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) - cFYI(1, "negotiated smb2.1 dialect"); + cifs_dbg(FYI, "negotiated smb2.1 dialect\n"); else if (rsp->DialectRevision == cpu_to_le16(SMB30_PROT_ID)) - cFYI(1, "negotiated smb3.0 dialect"); + cifs_dbg(FYI, "negotiated smb3.0 dialect\n"); + else if (rsp->DialectRevision == cpu_to_le16(SMB302_PROT_ID)) + cifs_dbg(FYI, "negotiated smb3.02 dialect\n"); else { - cERROR(1, "Illegal dialect returned by server %d", - le16_to_cpu(rsp->DialectRevision)); + cifs_dbg(VFS, "Illegal dialect returned by server %d\n", + le16_to_cpu(rsp->DialectRevision)); rc = -EIO; goto neg_exit; } server->dialect = le16_to_cpu(rsp->DialectRevision); - server->maxBuf = le32_to_cpu(rsp->MaxTransactSize); + /* SMB2 only has an extended negflavor */ + server->negflavor = CIFS_NEGFLAVOR_EXTENDED; + /* set it to the maximum buffer size value we can send with 1 credit */ + server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize), + SMB2_MAX_BUFFER_SIZE); server->max_read = le32_to_cpu(rsp->MaxReadSize); server->max_write = le32_to_cpu(rsp->MaxWriteSize); /* BB Do we need to validate the SecurityMode? */ @@ -418,45 +431,22 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) security_blob = smb2_get_data_area_len(&blob_offset, &blob_length, &rsp->hdr); - if (blob_length == 0) { - cERROR(1, "missing security blob on negprot"); - rc = -EIO; - goto neg_exit; - } - - cFYI(1, "sec_flags 0x%x", sec_flags); - if ((sec_flags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { - cFYI(1, "Signing required"); - if (!(server->sec_mode & (SMB2_NEGOTIATE_SIGNING_REQUIRED | - SMB2_NEGOTIATE_SIGNING_ENABLED))) { - cERROR(1, "signing required but server lacks support"); - rc = -EOPNOTSUPP; - goto neg_exit; - } - server->sec_mode |= SECMODE_SIGN_REQUIRED; - } else if (sec_flags & CIFSSEC_MAY_SIGN) { - cFYI(1, "Signing optional"); - if (server->sec_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) { - cFYI(1, "Server requires signing"); - server->sec_mode |= SECMODE_SIGN_REQUIRED; - } else { - server->sec_mode &= - ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); - } - } else { - cFYI(1, "Signing disabled"); - if (server->sec_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) { - cERROR(1, "Server requires packet signing to be enabled" - " in /proc/fs/cifs/SecurityFlags."); - rc = -EOPNOTSUPP; - goto neg_exit; - } - server->sec_mode &= - ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); - } + /* + * See MS-SMB2 section 2.2.4: if no blob, client picks default which + * for us will be + * ses->sectype = RawNTLMSSP; + * but for time being this is our only auth choice so doesn't matter. + * We just found a server which sets blob length to zero expecting raw. + */ + if (blob_length == 0) + cifs_dbg(FYI, "missing security blob on negprot\n"); + rc = cifs_enable_signing(server, ses->sign); #ifdef CONFIG_SMB2_ASN1 /* BB REMOVEME when updated asn1.c ready */ - rc = decode_neg_token_init(security_blob, blob_length, + if (rc) + goto neg_exit; + if (blob_length) + rc = decode_neg_token_init(security_blob, blob_length, &server->sec_type); if (rc == 1) rc = 0; @@ -471,6 +461,82 @@ neg_exit: return rc; } +int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon) +{ + int rc = 0; + struct validate_negotiate_info_req vneg_inbuf; + struct validate_negotiate_info_rsp *pneg_rsp; + u32 rsplen; + + cifs_dbg(FYI, "validate negotiate\n"); + + /* + * validation ioctl must be signed, so no point sending this if we + * can not sign it. We could eventually change this to selectively + * sign just this, the first and only signed request on a connection. + * This is good enough for now since a user who wants better security + * would also enable signing on the mount. Having validation of + * negotiate info for signed connections helps reduce attack vectors + */ + if (tcon->ses->server->sign == false) + return 0; /* validation requires signing */ + + vneg_inbuf.Capabilities = + cpu_to_le32(tcon->ses->server->vals->req_capabilities); + memcpy(vneg_inbuf.Guid, tcon->ses->server->client_guid, + SMB2_CLIENT_GUID_SIZE); + + if (tcon->ses->sign) + vneg_inbuf.SecurityMode = + cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); + else if (global_secflags & CIFSSEC_MAY_SIGN) + vneg_inbuf.SecurityMode = + cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); + else + vneg_inbuf.SecurityMode = 0; + + vneg_inbuf.DialectCount = cpu_to_le16(1); + vneg_inbuf.Dialects[0] = + cpu_to_le16(tcon->ses->server->vals->protocol_id); + + rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, + FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */, + (char *)&vneg_inbuf, sizeof(struct validate_negotiate_info_req), + (char **)&pneg_rsp, &rsplen); + + if (rc != 0) { + cifs_dbg(VFS, "validate protocol negotiate failed: %d\n", rc); + return -EIO; + } + + if (rsplen != sizeof(struct validate_negotiate_info_rsp)) { + cifs_dbg(VFS, "invalid size of protocol negotiate response\n"); + return -EIO; + } + + /* check validate negotiate info response matches what we got earlier */ + if (pneg_rsp->Dialect != + cpu_to_le16(tcon->ses->server->vals->protocol_id)) + goto vneg_out; + + if (pneg_rsp->SecurityMode != cpu_to_le16(tcon->ses->server->sec_mode)) + goto vneg_out; + + /* do not validate server guid because not saved at negprot time yet */ + + if ((le32_to_cpu(pneg_rsp->Capabilities) | SMB2_NT_FIND | + SMB2_LARGE_FILES) != tcon->ses->server->capabilities) + goto vneg_out; + + /* validate negotiate successful */ + cifs_dbg(FYI, "validate negotiate info successful\n"); + return 0; + +vneg_out: + cifs_dbg(VFS, "protocol revalidation - security settings mismatch\n"); + return -EIO; +} + int SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, const struct nls_table *nls_cp) @@ -481,32 +547,37 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, int rc = 0; int resp_buftype; __le32 phase = NtLmNegotiate; /* NTLMSSP, if needed, is multistage */ - struct TCP_Server_Info *server; - unsigned int sec_flags; - u8 temp = 0; + struct TCP_Server_Info *server = ses->server; u16 blob_length = 0; char *security_blob; char *ntlmssp_blob = NULL; bool use_spnego = false; /* else use raw ntlmssp */ - cFYI(1, "Session Setup"); + cifs_dbg(FYI, "Session Setup\n"); - if (ses->server) - server = ses->server; - else { - rc = -EIO; - return rc; + if (!server) { + WARN(1, "%s: server is NULL!\n", __func__); + return -EIO; } /* + * If we are here due to reconnect, free per-smb session key + * in case signing was required. + */ + kfree(ses->auth_key.response); + ses->auth_key.response = NULL; + + /* * If memory allocation is successful, caller of this function * frees it. */ ses->ntlmssp = kmalloc(sizeof(struct ntlmssp_auth), GFP_KERNEL); if (!ses->ntlmssp) return -ENOMEM; + ses->ntlmssp->sesskey_per_smbsess = true; - ses->server->secType = RawNTLMSSP; + /* FIXME: allow for other auth types besides NTLMSSP (e.g. krb5) */ + ses->sectype = RawNTLMSSP; ssetup_ntlmssp_authenticate: if (phase == NtLmChallenge) @@ -516,28 +587,19 @@ ssetup_ntlmssp_authenticate: if (rc) return rc; - /* if any of auth flags (ie not sign or seal) are overriden use them */ - if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) - sec_flags = ses->overrideSecFlg; /* BB FIXME fix sign flags?*/ - else /* if override flags set only sign/seal OR them with global auth */ - sec_flags = global_secflags | ses->overrideSecFlg; - - cFYI(1, "sec_flags 0x%x", sec_flags); - req->hdr.SessionId = 0; /* First session, not a reauthenticate */ req->VcNumber = 0; /* MBZ */ /* to enable echos and oplocks */ req->hdr.CreditRequest = cpu_to_le16(3); /* only one of SMB2 signing flags may be set in SMB2 request */ - if ((sec_flags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) - temp = SMB2_NEGOTIATE_SIGNING_REQUIRED; - else if (ses->server->sec_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) - temp = SMB2_NEGOTIATE_SIGNING_REQUIRED; - else if (sec_flags & CIFSSEC_MAY_SIGN) /* MAY_SIGN is a single flag */ - temp = SMB2_NEGOTIATE_SIGNING_ENABLED; - - req->SecurityMode = temp; + if (server->sign) + req->SecurityMode = SMB2_NEGOTIATE_SIGNING_REQUIRED; + else if (global_secflags & CIFSSEC_MAY_SIGN) /* one flag unlike MUST_ */ + req->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED; + else + req->SecurityMode = 0; + req->Capabilities = 0; req->Channel = 0; /* MBZ */ @@ -558,7 +620,7 @@ ssetup_ntlmssp_authenticate: sizeof(struct _NEGOTIATE_MESSAGE), ntlmssp_blob); */ /* BB eventually need to add this */ - cERROR(1, "spnego not supported for SMB2 yet"); + cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); rc = -EOPNOTSUPP; kfree(ntlmssp_blob); goto ssetup_exit; @@ -572,14 +634,14 @@ ssetup_ntlmssp_authenticate: ntlmssp_blob = kzalloc(sizeof(struct _NEGOTIATE_MESSAGE) + 500, GFP_KERNEL); if (ntlmssp_blob == NULL) { - cERROR(1, "failed to malloc ntlmssp blob"); rc = -ENOMEM; goto ssetup_exit; } rc = build_ntlmssp_auth_blob(ntlmssp_blob, &blob_length, ses, nls_cp); if (rc) { - cFYI(1, "build_ntlmssp_auth_blob failed %d", rc); + cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n", + rc); goto ssetup_exit; /* BB double check error handling */ } if (use_spnego) { @@ -587,7 +649,7 @@ ssetup_ntlmssp_authenticate: &security_blob, blob_length, ntlmssp_blob); */ - cERROR(1, "spnego not supported for SMB2 yet"); + cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); rc = -EOPNOTSUPP; kfree(ntlmssp_blob); goto ssetup_exit; @@ -595,7 +657,7 @@ ssetup_ntlmssp_authenticate: security_blob = ntlmssp_blob; } } else { - cERROR(1, "illegal ntlmssp phase"); + cifs_dbg(VFS, "illegal ntlmssp phase\n"); rc = -EIO; goto ssetup_exit; } @@ -620,13 +682,13 @@ ssetup_ntlmssp_authenticate: if (resp_buftype != CIFS_NO_BUFFER && rsp->hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) { if (phase != NtLmNegotiate) { - cERROR(1, "Unexpected more processing error"); + cifs_dbg(VFS, "Unexpected more processing error\n"); goto ssetup_exit; } if (offsetof(struct smb2_sess_setup_rsp, Buffer) - 4 != le16_to_cpu(rsp->SecurityBufferOffset)) { - cERROR(1, "Invalid security buffer offset %d", - le16_to_cpu(rsp->SecurityBufferOffset)); + cifs_dbg(VFS, "Invalid security buffer offset %d\n", + le16_to_cpu(rsp->SecurityBufferOffset)); rc = -EIO; goto ssetup_exit; } @@ -651,12 +713,48 @@ ssetup_ntlmssp_authenticate: goto ssetup_exit; ses->session_flags = le16_to_cpu(rsp->SessionFlags); + if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) + cifs_dbg(VFS, "SMB3 encryption not supported yet\n"); ssetup_exit: free_rsp_buf(resp_buftype, rsp); /* if ntlmssp, and negotiate succeeded, proceed to authenticate phase */ if ((phase == NtLmChallenge) && (rc == 0)) goto ssetup_ntlmssp_authenticate; + + if (!rc) { + mutex_lock(&server->srv_mutex); + if (server->sign && server->ops->generate_signingkey) { + rc = server->ops->generate_signingkey(ses); + kfree(ses->auth_key.response); + ses->auth_key.response = NULL; + if (rc) { + cifs_dbg(FYI, + "SMB3 session key generation failed\n"); + mutex_unlock(&server->srv_mutex); + goto keygen_exit; + } + } + if (!server->session_estab) { + server->sequence_number = 0x2; + server->session_estab = true; + } + mutex_unlock(&server->srv_mutex); + + cifs_dbg(FYI, "SMB2/3 session established successfully\n"); + spin_lock(&GlobalMid_Lock); + ses->status = CifsGood; + ses->need_reconnect = false; + spin_unlock(&GlobalMid_Lock); + } + +keygen_exit: + if (!server->sign) { + kfree(ses->auth_key.response); + ses->auth_key.response = NULL; + } + kfree(ses->ntlmssp); + return rc; } @@ -667,20 +765,24 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) int rc = 0; struct TCP_Server_Info *server; - cFYI(1, "disconnect session %p", ses); + cifs_dbg(FYI, "disconnect session %p\n", ses); if (ses && (ses->server)) server = ses->server; else return -EIO; + /* no need to send SMB logoff if uid already closed due to reconnect */ + if (ses->need_reconnect) + goto smb2_session_already_dead; + rc = small_smb2_init(SMB2_LOGOFF, NULL, (void **) &req); if (rc) return rc; /* since no tcon, smb2_init can not do this, so do here */ req->hdr.SessionId = ses->Suid; - if (server->sec_mode & SECMODE_SIGN_REQUIRED) + if (server->sign) req->hdr.Flags |= SMB2_FLAGS_SIGNED; rc = SendReceiveNoRsp(xid, ses, (char *) &req->hdr, 0); @@ -688,6 +790,8 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) * No tcon so can't do * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); */ + +smb2_session_already_dead: return rc; } @@ -698,6 +802,14 @@ static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code) #define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */) +/* These are similar values to what Windows uses */ +static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon) +{ + tcon->max_chunks = 256; + tcon->max_bytes_chunk = 1048576; + tcon->max_bytes_copy = 16777216; +} + int SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, struct cifs_tcon *tcon, const struct nls_table *cp) @@ -711,7 +823,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, struct TCP_Server_Info *server; __le16 *unc_path = NULL; - cFYI(1, "TCON"); + cifs_dbg(FYI, "TCON\n"); if ((ses->server) && tree) server = ses->server; @@ -775,30 +887,33 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, } if (rsp->ShareType & SMB2_SHARE_TYPE_DISK) - cFYI(1, "connection to disk share"); + cifs_dbg(FYI, "connection to disk share\n"); else if (rsp->ShareType & SMB2_SHARE_TYPE_PIPE) { tcon->ipc = true; - cFYI(1, "connection to pipe share"); + cifs_dbg(FYI, "connection to pipe share\n"); } else if (rsp->ShareType & SMB2_SHARE_TYPE_PRINT) { tcon->print = true; - cFYI(1, "connection to printer"); + cifs_dbg(FYI, "connection to printer\n"); } else { - cERROR(1, "unknown share type %d", rsp->ShareType); + cifs_dbg(VFS, "unknown share type %d\n", rsp->ShareType); rc = -EOPNOTSUPP; goto tcon_error_exit; } tcon->share_flags = le32_to_cpu(rsp->ShareFlags); + tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */ tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess); tcon->tidStatus = CifsGood; tcon->need_reconnect = false; tcon->tid = rsp->hdr.TreeId; - strncpy(tcon->treeName, tree, MAX_TREE_SIZE); + strlcpy(tcon->treeName, tree, sizeof(tcon->treeName)); if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) && ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0)) - cERROR(1, "DFS capability contradicts DFS flag"); - + cifs_dbg(VFS, "DFS capability contradicts DFS flag\n"); + init_copy_chunk_defaults(tcon); + if (tcon->ses->server->ops->validate_negotiate) + rc = tcon->ses->server->ops->validate_negotiate(xid, tcon); tcon_exit: free_rsp_buf(resp_buftype, rsp); kfree(unc_path); @@ -806,7 +921,7 @@ tcon_exit: tcon_error_exit: if (rsp->hdr.Status == STATUS_BAD_NETWORK_NAME) { - cERROR(1, "BAD_NETWORK_NAME: %s", tree); + cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree); tcon->bad_network_name = true; } goto tcon_exit; @@ -820,7 +935,7 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; - cFYI(1, "Tree Disconnect"); + cifs_dbg(FYI, "Tree Disconnect\n"); if (ses && (ses->server)) server = ses->server; @@ -841,91 +956,150 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) return rc; } -static struct create_lease * -create_lease_buf(u8 *lease_key, u8 oplock) + +static struct create_durable * +create_durable_buf(void) { - struct create_lease *buf; + struct create_durable *buf; - buf = kmalloc(sizeof(struct create_lease), GFP_KERNEL); + buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); if (!buf) return NULL; - memset(buf, 0, sizeof(struct create_lease)); + buf->ccontext.DataOffset = cpu_to_le16(offsetof + (struct create_durable, Data)); + buf->ccontext.DataLength = cpu_to_le32(16); + buf->ccontext.NameOffset = cpu_to_le16(offsetof + (struct create_durable, Name)); + buf->ccontext.NameLength = cpu_to_le16(4); + /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */ + buf->Name[0] = 'D'; + buf->Name[1] = 'H'; + buf->Name[2] = 'n'; + buf->Name[3] = 'Q'; + return buf; +} + +static struct create_durable * +create_reconnect_durable_buf(struct cifs_fid *fid) +{ + struct create_durable *buf; - buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); - buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); - if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) - buf->lcontext.LeaseState = SMB2_LEASE_WRITE_CACHING | - SMB2_LEASE_READ_CACHING; - else if (oplock == SMB2_OPLOCK_LEVEL_II) - buf->lcontext.LeaseState = SMB2_LEASE_READ_CACHING; - else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) - buf->lcontext.LeaseState = SMB2_LEASE_HANDLE_CACHING | - SMB2_LEASE_READ_CACHING | - SMB2_LEASE_WRITE_CACHING; + buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); + if (!buf) + return NULL; buf->ccontext.DataOffset = cpu_to_le16(offsetof - (struct create_lease, lcontext)); - buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); + (struct create_durable, Data)); + buf->ccontext.DataLength = cpu_to_le32(16); buf->ccontext.NameOffset = cpu_to_le16(offsetof - (struct create_lease, Name)); + (struct create_durable, Name)); buf->ccontext.NameLength = cpu_to_le16(4); - buf->Name[0] = 'R'; - buf->Name[1] = 'q'; - buf->Name[2] = 'L'; - buf->Name[3] = 's'; + buf->Data.Fid.PersistentFileId = fid->persistent_fid; + buf->Data.Fid.VolatileFileId = fid->volatile_fid; + /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */ + buf->Name[0] = 'D'; + buf->Name[1] = 'H'; + buf->Name[2] = 'n'; + buf->Name[3] = 'C'; return buf; } static __u8 -parse_lease_state(struct smb2_create_rsp *rsp) +parse_lease_state(struct TCP_Server_Info *server, struct smb2_create_rsp *rsp, + unsigned int *epoch) { char *data_offset; - struct create_lease *lc; - bool found = false; + struct create_context *cc; + unsigned int next = 0; + char *name; - data_offset = (char *)rsp; - data_offset += 4 + le32_to_cpu(rsp->CreateContextsOffset); - lc = (struct create_lease *)data_offset; + data_offset = (char *)rsp + 4 + le32_to_cpu(rsp->CreateContextsOffset); + cc = (struct create_context *)data_offset; do { - char *name = le16_to_cpu(lc->ccontext.NameOffset) + (char *)lc; - if (le16_to_cpu(lc->ccontext.NameLength) != 4 || + cc = (struct create_context *)((char *)cc + next); + name = le16_to_cpu(cc->NameOffset) + (char *)cc; + if (le16_to_cpu(cc->NameLength) != 4 || strncmp(name, "RqLs", 4)) { - lc = (struct create_lease *)((char *)lc - + le32_to_cpu(lc->ccontext.Next)); + next = le32_to_cpu(cc->Next); continue; } - if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) - return SMB2_OPLOCK_LEVEL_NOCHANGE; - found = true; - break; - } while (le32_to_cpu(lc->ccontext.Next) != 0); + return server->ops->parse_lease_buf(cc, epoch); + } while (next != 0); - if (!found) - return 0; + return 0; +} + +static int +add_lease_context(struct TCP_Server_Info *server, struct kvec *iov, + unsigned int *num_iovec, __u8 *oplock) +{ + struct smb2_create_req *req = iov[0].iov_base; + unsigned int num = *num_iovec; + + iov[num].iov_base = server->ops->create_lease_buf(oplock+1, *oplock); + if (iov[num].iov_base == NULL) + return -ENOMEM; + iov[num].iov_len = server->vals->create_lease_size; + req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; + if (!req->CreateContextsOffset) + req->CreateContextsOffset = cpu_to_le32( + sizeof(struct smb2_create_req) - 4 + + iov[num - 1].iov_len); + le32_add_cpu(&req->CreateContextsLength, + server->vals->create_lease_size); + inc_rfc1001_len(&req->hdr, server->vals->create_lease_size); + *num_iovec = num + 1; + return 0; +} + +static int +add_durable_context(struct kvec *iov, unsigned int *num_iovec, + struct cifs_open_parms *oparms) +{ + struct smb2_create_req *req = iov[0].iov_base; + unsigned int num = *num_iovec; - return smb2_map_lease_to_oplock(lc->lcontext.LeaseState); + if (oparms->reconnect) { + iov[num].iov_base = create_reconnect_durable_buf(oparms->fid); + /* indicate that we don't need to relock the file */ + oparms->reconnect = false; + } else + iov[num].iov_base = create_durable_buf(); + if (iov[num].iov_base == NULL) + return -ENOMEM; + iov[num].iov_len = sizeof(struct create_durable); + if (!req->CreateContextsOffset) + req->CreateContextsOffset = + cpu_to_le32(sizeof(struct smb2_create_req) - 4 + + iov[1].iov_len); + le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable)); + inc_rfc1001_len(&req->hdr, sizeof(struct create_durable)); + *num_iovec = num + 1; + return 0; } int -SMB2_open(const unsigned int xid, struct cifs_tcon *tcon, __le16 *path, - u64 *persistent_fid, u64 *volatile_fid, __u32 desired_access, - __u32 create_disposition, __u32 file_attributes, __u32 create_options, - __u8 *oplock, struct smb2_file_all_info *buf) +SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, + __u8 *oplock, struct smb2_file_all_info *buf, + struct smb2_err_rsp **err_buf) { struct smb2_create_req *req; struct smb2_create_rsp *rsp; struct TCP_Server_Info *server; + struct cifs_tcon *tcon = oparms->tcon; struct cifs_ses *ses = tcon->ses; - struct kvec iov[3]; + struct kvec iov[4]; int resp_buftype; int uni_path_len; __le16 *copy_path = NULL; int copy_size; int rc = 0; - int num_iovecs = 2; + unsigned int num_iovecs = 2; + __u32 file_attributes = 0; + char *dhc_buf = NULL, *lc_buf = NULL; - cFYI(1, "create/open"); + cifs_dbg(FYI, "create/open\n"); if (ses && (ses->server)) server = ses->server; @@ -936,77 +1110,79 @@ SMB2_open(const unsigned int xid, struct cifs_tcon *tcon, __le16 *path, if (rc) return rc; + if (oparms->create_options & CREATE_OPTION_READONLY) + file_attributes |= ATTR_READONLY; + req->ImpersonationLevel = IL_IMPERSONATION; - req->DesiredAccess = cpu_to_le32(desired_access); + req->DesiredAccess = cpu_to_le32(oparms->desired_access); /* File attributes ignored on open (used in create though) */ req->FileAttributes = cpu_to_le32(file_attributes); req->ShareAccess = FILE_SHARE_ALL_LE; - req->CreateDisposition = cpu_to_le32(create_disposition); - req->CreateOptions = cpu_to_le32(create_options); + req->CreateDisposition = cpu_to_le32(oparms->disposition); + req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK); uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2; - req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req) - - 8 /* pad */ - 4 /* do not count rfc1001 len field */); + /* do not count rfc1001 len field */ + req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req) - 4); iov[0].iov_base = (char *)req; /* 4 for rfc1002 length field */ iov[0].iov_len = get_rfc1002_length(req) + 4; /* MUST set path len (NameLength) to 0 opening root of share */ - if (uni_path_len >= 4) { - req->NameLength = cpu_to_le16(uni_path_len - 2); - /* -1 since last byte is buf[0] which is sent below (path) */ - iov[0].iov_len--; - if (uni_path_len % 8 != 0) { - copy_size = uni_path_len / 8 * 8; - if (copy_size < uni_path_len) - copy_size += 8; - - copy_path = kzalloc(copy_size, GFP_KERNEL); - if (!copy_path) - return -ENOMEM; - memcpy((char *)copy_path, (const char *)path, - uni_path_len); - uni_path_len = copy_size; - path = copy_path; - } - - iov[1].iov_len = uni_path_len; - iov[1].iov_base = path; - /* - * -1 since last byte is buf[0] which was counted in - * smb2_buf_len. - */ - inc_rfc1001_len(req, uni_path_len - 1); - } else { - iov[0].iov_len += 7; - req->hdr.smb2_buf_length = cpu_to_be32(be32_to_cpu( - req->hdr.smb2_buf_length) + 8 - 1); - num_iovecs = 1; - req->NameLength = 0; + req->NameLength = cpu_to_le16(uni_path_len - 2); + /* -1 since last byte is buf[0] which is sent below (path) */ + iov[0].iov_len--; + if (uni_path_len % 8 != 0) { + copy_size = uni_path_len / 8 * 8; + if (copy_size < uni_path_len) + copy_size += 8; + + copy_path = kzalloc(copy_size, GFP_KERNEL); + if (!copy_path) + return -ENOMEM; + memcpy((char *)copy_path, (const char *)path, + uni_path_len); + uni_path_len = copy_size; + path = copy_path; } + iov[1].iov_len = uni_path_len; + iov[1].iov_base = path; + /* -1 since last byte is buf[0] which was counted in smb2_buf_len */ + inc_rfc1001_len(req, uni_path_len - 1); + if (!server->oplocks) *oplock = SMB2_OPLOCK_LEVEL_NONE; - if (!(tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) || + if (!(server->capabilities & SMB2_GLOBAL_CAP_LEASING) || *oplock == SMB2_OPLOCK_LEVEL_NONE) req->RequestedOplockLevel = *oplock; else { - iov[num_iovecs].iov_base = create_lease_buf(oplock+1, *oplock); - if (iov[num_iovecs].iov_base == NULL) { + rc = add_lease_context(server, iov, &num_iovecs, oplock); + if (rc) { cifs_small_buf_release(req); kfree(copy_path); - return -ENOMEM; + return rc; } - iov[num_iovecs].iov_len = sizeof(struct create_lease); - req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; - req->CreateContextsOffset = cpu_to_le32( - sizeof(struct smb2_create_req) - 4 - 8 + - iov[num_iovecs-1].iov_len); - req->CreateContextsLength = cpu_to_le32( - sizeof(struct create_lease)); - inc_rfc1001_len(&req->hdr, sizeof(struct create_lease)); - num_iovecs++; + lc_buf = iov[num_iovecs-1].iov_base; + } + + if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) { + /* need to set Next field of lease context if we request it */ + if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) { + struct create_context *ccontext = + (struct create_context *)iov[num_iovecs-1].iov_base; + ccontext->Next = + cpu_to_le32(server->vals->create_lease_size); + } + rc = add_durable_context(iov, &num_iovecs, oparms); + if (rc) { + cifs_small_buf_release(req); + kfree(copy_path); + kfree(lc_buf); + return rc; + } + dhc_buf = iov[num_iovecs-1].iov_base; } rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0); @@ -1014,11 +1190,14 @@ SMB2_open(const unsigned int xid, struct cifs_tcon *tcon, __le16 *path, if (rc != 0) { cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); + if (err_buf) + *err_buf = kmemdup(rsp, get_rfc1002_length(rsp) + 4, + GFP_KERNEL); goto creat_exit; } - *persistent_fid = rsp->PersistentFileId; - *volatile_fid = rsp->VolatileFileId; + oparms->fid->persistent_fid = rsp->PersistentFileId; + oparms->fid->volatile_fid = rsp->VolatileFileId; if (buf) { memcpy(buf, &rsp->CreationTime, 32); @@ -1030,15 +1209,178 @@ SMB2_open(const unsigned int xid, struct cifs_tcon *tcon, __le16 *path, } if (rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) - *oplock = parse_lease_state(rsp); + *oplock = parse_lease_state(server, rsp, &oparms->fid->epoch); else *oplock = rsp->OplockLevel; creat_exit: kfree(copy_path); + kfree(lc_buf); + kfree(dhc_buf); free_rsp_buf(resp_buftype, rsp); return rc; } +/* + * SMB2 IOCTL is used for both IOCTLs and FSCTLs + */ +int +SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, + u64 volatile_fid, u32 opcode, bool is_fsctl, char *in_data, + u32 indatalen, char **out_data, u32 *plen /* returned data len */) +{ + struct smb2_ioctl_req *req; + struct smb2_ioctl_rsp *rsp; + struct TCP_Server_Info *server; + struct cifs_ses *ses = tcon->ses; + struct kvec iov[2]; + int resp_buftype; + int num_iovecs; + int rc = 0; + + cifs_dbg(FYI, "SMB2 IOCTL\n"); + + *out_data = NULL; + /* zero out returned data len, in case of error */ + if (plen) + *plen = 0; + + if (ses && (ses->server)) + server = ses->server; + else + return -EIO; + + rc = small_smb2_init(SMB2_IOCTL, tcon, (void **) &req); + if (rc) + return rc; + + req->CtlCode = cpu_to_le32(opcode); + req->PersistentFileId = persistent_fid; + req->VolatileFileId = volatile_fid; + + if (indatalen) { + req->InputCount = cpu_to_le32(indatalen); + /* do not set InputOffset if no input data */ + req->InputOffset = + cpu_to_le32(offsetof(struct smb2_ioctl_req, Buffer) - 4); + iov[1].iov_base = in_data; + iov[1].iov_len = indatalen; + num_iovecs = 2; + } else + num_iovecs = 1; + + req->OutputOffset = 0; + req->OutputCount = 0; /* MBZ */ + + /* + * Could increase MaxOutputResponse, but that would require more + * than one credit. Windows typically sets this smaller, but for some + * ioctls it may be useful to allow server to send more. No point + * limiting what the server can send as long as fits in one credit + */ + req->MaxOutputResponse = cpu_to_le32(0xFF00); /* < 64K uses 1 credit */ + + if (is_fsctl) + req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL); + else + req->Flags = 0; + + iov[0].iov_base = (char *)req; + + /* + * If no input data, the size of ioctl struct in + * protocol spec still includes a 1 byte data buffer, + * but if input data passed to ioctl, we do not + * want to double count this, so we do not send + * the dummy one byte of data in iovec[0] if sending + * input data (in iovec[1]). We also must add 4 bytes + * in first iovec to allow for rfc1002 length field. + */ + + if (indatalen) { + iov[0].iov_len = get_rfc1002_length(req) + 4 - 1; + inc_rfc1001_len(req, indatalen - 1); + } else + iov[0].iov_len = get_rfc1002_length(req) + 4; + + + rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0); + rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base; + + if ((rc != 0) && (rc != -EINVAL)) { + if (tcon) + cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); + goto ioctl_exit; + } else if (rc == -EINVAL) { + if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) && + (opcode != FSCTL_SRV_COPYCHUNK)) { + if (tcon) + cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); + goto ioctl_exit; + } + } + + /* check if caller wants to look at return data or just return rc */ + if ((plen == NULL) || (out_data == NULL)) + goto ioctl_exit; + + *plen = le32_to_cpu(rsp->OutputCount); + + /* We check for obvious errors in the output buffer length and offset */ + if (*plen == 0) + goto ioctl_exit; /* server returned no data */ + else if (*plen > 0xFF00) { + cifs_dbg(VFS, "srv returned invalid ioctl length: %d\n", *plen); + *plen = 0; + rc = -EIO; + goto ioctl_exit; + } + + if (get_rfc1002_length(rsp) < le32_to_cpu(rsp->OutputOffset) + *plen) { + cifs_dbg(VFS, "Malformed ioctl resp: len %d offset %d\n", *plen, + le32_to_cpu(rsp->OutputOffset)); + *plen = 0; + rc = -EIO; + goto ioctl_exit; + } + + *out_data = kmalloc(*plen, GFP_KERNEL); + if (*out_data == NULL) { + rc = -ENOMEM; + goto ioctl_exit; + } + + memcpy(*out_data, rsp->hdr.ProtocolId + le32_to_cpu(rsp->OutputOffset), + *plen); +ioctl_exit: + free_rsp_buf(resp_buftype, rsp); + return rc; +} + +/* + * Individual callers to ioctl worker function follow + */ + +int +SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid) +{ + int rc; + struct compress_ioctl fsctl_input; + char *ret_data = NULL; + + fsctl_input.CompressionState = + __constant_cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); + + rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, + FSCTL_SET_COMPRESSION, true /* is_fsctl */, + (char *)&fsctl_input /* data input */, + 2 /* in data len */, &ret_data /* out data */, NULL); + + cifs_dbg(FYI, "set compression rc %d\n", rc); + + return rc; +} + int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid) @@ -1051,7 +1393,7 @@ SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, int resp_buftype; int rc = 0; - cFYI(1, "Close"); + cifs_dbg(FYI, "Close\n"); if (ses && (ses->server)) server = ses->server; @@ -1097,20 +1439,20 @@ validate_buf(unsigned int offset, unsigned int buffer_length, if (buffer_length < min_buf_size) { - cERROR(1, "buffer length %d smaller than minimum size %d", - buffer_length, min_buf_size); + cifs_dbg(VFS, "buffer length %d smaller than minimum size %d\n", + buffer_length, min_buf_size); return -EINVAL; } /* check if beyond RFC1001 maximum length */ if ((smb_len > 0x7FFFFF) || (buffer_length > 0x7FFFFF)) { - cERROR(1, "buffer length %d or smb length %d too large", - buffer_length, smb_len); + cifs_dbg(VFS, "buffer length %d or smb length %d too large\n", + buffer_length, smb_len); return -EINVAL; } if ((begin_of_buf > end_of_smb) || (end_of_buf > end_of_smb)) { - cERROR(1, "illegal server response, bad offset to data"); + cifs_dbg(VFS, "illegal server response, bad offset to data\n"); return -EINVAL; } @@ -1155,7 +1497,7 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; - cFYI(1, "Query Info"); + cifs_dbg(FYI, "Query Info\n"); if (ses && (ses->server)) server = ses->server; @@ -1247,7 +1589,7 @@ SMB2_echo(struct TCP_Server_Info *server) struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; - cFYI(1, "In echo request"); + cifs_dbg(FYI, "In echo request\n"); rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req); if (rc) @@ -1262,7 +1604,7 @@ SMB2_echo(struct TCP_Server_Info *server) rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, server, CIFS_ECHO_OP); if (rc) - cFYI(1, "Echo request failed: %d", rc); + cifs_dbg(FYI, "Echo request failed: %d\n", rc); cifs_small_buf_release(req); return rc; @@ -1279,7 +1621,7 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, int resp_buftype; int rc = 0; - cFYI(1, "Flush"); + cifs_dbg(FYI, "Flush\n"); if (ses && (ses->server)) server = ses->server; @@ -1379,21 +1721,21 @@ smb2_readv_callback(struct mid_q_entry *mid) .rq_pagesz = rdata->pagesz, .rq_tailsz = rdata->tailsz }; - cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__, - mid->mid, mid->mid_state, rdata->result, rdata->bytes); + cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", + __func__, mid->mid, mid->mid_state, rdata->result, + rdata->bytes); switch (mid->mid_state) { case MID_RESPONSE_RECEIVED: credits_received = le16_to_cpu(buf->CreditRequest); /* result already set, check signature */ - if (server->sec_mode & - (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { + if (server->sign) { int rc; rc = smb2_verify_signature(&rqst, server); if (rc) - cERROR(1, "SMB signature verification returned " - "error = %d", rc); + cifs_dbg(VFS, "SMB signature verification returned error = %d\n", + rc); } /* FIXME: should this be counted toward the initiating task? */ task_io_account_read(rdata->bytes); @@ -1426,8 +1768,8 @@ smb2_async_readv(struct cifs_readdata *rdata) struct smb_rqst rqst = { .rq_iov = &rdata->iov, .rq_nvec = 1 }; - cFYI(1, "%s: offset=%llu bytes=%u", __func__, - rdata->offset, rdata->bytes); + cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", + __func__, rdata->offset, rdata->bytes); io_parms.tcon = tlink_tcon(rdata->cfile->tlink); io_parms.offset = rdata->offset; @@ -1481,13 +1823,13 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, if (rc) { cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE); - cERROR(1, "Send error in read = %d", rc); + cifs_dbg(VFS, "Send error in read = %d\n", rc); } else { *nbytes = le32_to_cpu(rsp->DataLength); if ((*nbytes > CIFS_MAX_MSGSIZE) || (*nbytes > io_parms->length)) { - cFYI(1, "bad length %d for count %d", *nbytes, - io_parms->length); + cifs_dbg(FYI, "bad length %d for count %d\n", + *nbytes, io_parms->length); rc = -EIO; *nbytes = 0; } @@ -1561,7 +1903,8 @@ smb2_writev_callback(struct mid_q_entry *mid) /* smb2_async_writev - send an async write, and set up mid to handle result */ int -smb2_async_writev(struct cifs_writedata *wdata) +smb2_async_writev(struct cifs_writedata *wdata, + void (*release)(struct kref *kref)) { int rc = -EACCES; struct smb2_write_req *req = NULL; @@ -1597,7 +1940,8 @@ smb2_async_writev(struct cifs_writedata *wdata) rqst.rq_pagesz = wdata->pagesz; rqst.rq_tailsz = wdata->tailsz; - cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); + cifs_dbg(FYI, "async write at %llu %u bytes\n", + wdata->offset, wdata->bytes); req->Length = cpu_to_le32(wdata->bytes); @@ -1608,7 +1952,7 @@ smb2_async_writev(struct cifs_writedata *wdata) smb2_writev_callback, wdata, 0); if (rc) { - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, release); cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); } @@ -1670,7 +2014,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, if (rc) { cifs_stats_fail_inc(io_parms->tcon, SMB2_WRITE_HE); - cERROR(1, "Send error in write = %d", rc); + cifs_dbg(VFS, "Send error in write = %d\n", rc); } else *nbytes = le32_to_cpu(rsp->DataLength); @@ -1696,14 +2040,14 @@ num_entries(char *bufstart, char *end_of_buf, char **lastentry, size_t size) ((char *)entryptr + next_offset); if ((char *)entryptr + size > end_of_buf) { - cERROR(1, "malformed search entry would overflow"); + cifs_dbg(VFS, "malformed search entry would overflow\n"); break; } len = le32_to_cpu(entryptr->FileNameLength); if ((char *)entryptr + len + size > end_of_buf) { - cERROR(1, "directory entry name would overflow frame " - "end of buf %p", end_of_buf); + cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n", + end_of_buf); break; } @@ -1759,8 +2103,8 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1; break; default: - cERROR(1, "info level %u isn't supported", - srch_inf->info_level); + cifs_dbg(VFS, "info level %u isn't supported\n", + srch_inf->info_level); rc = -EINVAL; goto qdir_exit; } @@ -1824,15 +2168,15 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, num_entries(srch_inf->srch_entries_start, end_of_smb, &srch_inf->last_entry, info_buf_size); srch_inf->index_of_last_entry += srch_inf->entries_in_buffer; - cFYI(1, "num entries %d last_index %lld srch start %p srch end %p", - srch_inf->entries_in_buffer, srch_inf->index_of_last_entry, - srch_inf->srch_entries_start, srch_inf->last_entry); + cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n", + srch_inf->entries_in_buffer, srch_inf->index_of_last_entry, + srch_inf->srch_entries_start, srch_inf->last_entry); if (resp_buftype == CIFS_LARGE_BUFFER) srch_inf->smallBuf = false; else if (resp_buftype == CIFS_SMALL_BUFFER) srch_inf->smallBuf = true; else - cERROR(1, "illegal search buffer type"); + cifs_dbg(VFS, "illegal search buffer type\n"); if (rsp->hdr.Status == STATUS_NO_MORE_FILES) srch_inf->endOfSearch = 1; @@ -1908,11 +2252,9 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, rc = SendReceive2(xid, ses, iov, num, &resp_buftype, 0); rsp = (struct smb2_set_info_rsp *)iov[0].iov_base; - if (rc != 0) { + if (rc != 0) cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE); - goto out; - } -out: + free_rsp_buf(resp_buftype, rsp); kfree(iov); return rc; @@ -2017,7 +2359,7 @@ SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, int rc; struct smb2_oplock_break *req = NULL; - cFYI(1, "SMB2_oplock_break"); + cifs_dbg(FYI, "SMB2_oplock_break\n"); rc = small_smb2_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req); if (rc) @@ -2033,7 +2375,7 @@ SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, if (rc) { cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); - cFYI(1, "Send error in Oplock Break = %d", rc); + cifs_dbg(FYI, "Send error in Oplock Break = %d\n", rc); } return rc; @@ -2058,7 +2400,7 @@ build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, int level, int rc; struct smb2_query_info_req *req; - cFYI(1, "Query FSInfo level %d", level); + cifs_dbg(FYI, "Query FSInfo level %d\n", level); if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) return -EIO; @@ -2103,7 +2445,7 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, 0); if (rc) { cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); - goto qinf_exit; + goto qfsinf_exit; } rsp = (struct smb2_query_info_rsp *)iov.iov_base; @@ -2115,7 +2457,70 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, if (!rc) copy_fs_info_to_kstatfs(info, fsdata); -qinf_exit: +qfsinf_exit: + free_rsp_buf(resp_buftype, iov.iov_base); + return rc; +} + +int +SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, int level) +{ + struct smb2_query_info_rsp *rsp = NULL; + struct kvec iov; + int rc = 0; + int resp_buftype, max_len, min_len; + struct cifs_ses *ses = tcon->ses; + unsigned int rsp_len, offset; + + if (level == FS_DEVICE_INFORMATION) { + max_len = sizeof(FILE_SYSTEM_DEVICE_INFO); + min_len = sizeof(FILE_SYSTEM_DEVICE_INFO); + } else if (level == FS_ATTRIBUTE_INFORMATION) { + max_len = sizeof(FILE_SYSTEM_ATTRIBUTE_INFO); + min_len = MIN_FS_ATTR_INFO_SIZE; + } else if (level == FS_SECTOR_SIZE_INFORMATION) { + max_len = sizeof(struct smb3_fs_ss_info); + min_len = sizeof(struct smb3_fs_ss_info); + } else { + cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level); + return -EINVAL; + } + + rc = build_qfs_info_req(&iov, tcon, level, max_len, + persistent_fid, volatile_fid); + if (rc) + return rc; + + rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, 0); + if (rc) { + cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); + goto qfsattr_exit; + } + rsp = (struct smb2_query_info_rsp *)iov.iov_base; + + rsp_len = le32_to_cpu(rsp->OutputBufferLength); + offset = le16_to_cpu(rsp->OutputBufferOffset); + rc = validate_buf(offset, rsp_len, &rsp->hdr, min_len); + if (rc) + goto qfsattr_exit; + + if (level == FS_ATTRIBUTE_INFORMATION) + memcpy(&tcon->fsAttrInfo, 4 /* RFC1001 len */ + offset + + (char *)&rsp->hdr, min_t(unsigned int, + rsp_len, max_len)); + else if (level == FS_DEVICE_INFORMATION) + memcpy(&tcon->fsDevInfo, 4 /* RFC1001 len */ + offset + + (char *)&rsp->hdr, sizeof(FILE_SYSTEM_DEVICE_INFO)); + else if (level == FS_SECTOR_SIZE_INFORMATION) { + struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *) + (4 /* RFC1001 len */ + offset + (char *)&rsp->hdr); + tcon->ss_flags = le32_to_cpu(ss_info->Flags); + tcon->perf_sector_size = + le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf); + } + +qfsattr_exit: free_rsp_buf(resp_buftype, iov.iov_base); return rc; } @@ -2131,7 +2536,7 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, int resp_buf_type; unsigned int count; - cFYI(1, "smb2_lockv num lock %d", num_lock); + cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock); rc = small_smb2_init(SMB2_LOCK, tcon, (void **) &req); if (rc) @@ -2155,7 +2560,7 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); if (rc) { - cFYI(1, "Send error in smb2_lockv = %d", rc); + cifs_dbg(FYI, "Send error in smb2_lockv = %d\n", rc); cifs_stats_fail_inc(tcon, SMB2_LOCK_HE); } @@ -2186,7 +2591,7 @@ SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, int rc; struct smb2_lease_ack *req = NULL; - cFYI(1, "SMB2_lease_break"); + cifs_dbg(FYI, "SMB2_lease_break\n"); rc = small_smb2_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req); if (rc) @@ -2204,7 +2609,7 @@ SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, if (rc) { cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); - cFYI(1, "Send error in Lease Break = %d", rc); + cifs_dbg(FYI, "Send error in Lease Break = %d\n", rc); } return rc; |