| /* |
| * fs/cifs/cifssmb.c |
| * |
| * Copyright (C) International Business Machines Corp., 2002,2006 |
| * Author(s): Steve French (sfrench@us.ibm.com) |
| * |
| * Contains the routines for constructing the SMB PDUs themselves |
| * |
| * This library is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Lesser General Public License as published |
| * by the Free Software Foundation; either version 2.1 of the License, or |
| * (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ |
| /* These are mostly routines that operate on a pathname, or on a tree id */ |
| /* (mounted volume), but there are eight handle based routines which must be */ |
| /* treated slightly different for reconnection purposes since we never want */ |
| /* to reuse a stale file handle and the caller knows the file handle */ |
| |
| #include <linux/fs.h> |
| #include <linux/kernel.h> |
| #include <linux/vfs.h> |
| #include <linux/posix_acl_xattr.h> |
| #include <asm/uaccess.h> |
| #include "cifspdu.h" |
| #include "cifsglob.h" |
| #include "cifsproto.h" |
| #include "cifs_unicode.h" |
| #include "cifs_debug.h" |
| #include "cifsacl.h" |
| |
| #ifdef CONFIG_CIFS_POSIX |
| static struct { |
| int index; |
| char *name; |
| } protocols[] = { |
| {CIFS_PROT, "\2NT LM 0.12"}, |
| {CIFS_PROT, "\2POSIX 2"}, |
| {BAD_PROT, "\2"} |
| }; |
| #else |
| static struct { |
| int index; |
| char *name; |
| } protocols[] = { |
| {CIFS_PROT, "\2NT LM 0.12"}, |
| {BAD_PROT, "\2"} |
| }; |
| #endif |
| |
| |
| /* Mark as invalid, all open files on tree connections since they |
| were closed when session to server was lost */ |
| static void mark_open_files_invalid(struct cifsTconInfo * pTcon) |
| { |
| struct cifsFileInfo *open_file = NULL; |
| struct list_head * tmp; |
| struct list_head * tmp1; |
| |
| /* list all files open on tree connection and mark them invalid */ |
| write_lock(&GlobalSMBSeslock); |
| list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
| open_file = list_entry(tmp,struct cifsFileInfo, tlist); |
| if(open_file) { |
| open_file->invalidHandle = TRUE; |
| } |
| } |
| write_unlock(&GlobalSMBSeslock); |
| /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
| to this tcon */ |
| } |
| |
| /* If the return code is zero, this function must fill in request_buf pointer */ |
| static int |
| small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, |
| void **request_buf /* returned */) |
| { |
| int rc = 0; |
| |
| /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so |
| check for tcp and smb session status done differently |
| for those three - in the calling routine */ |
| if(tcon) { |
| if(tcon->tidStatus == CifsExiting) { |
| /* only tree disconnect, open, and write, |
| (and ulogoff which does not have tcon) |
| are allowed as we start force umount */ |
| if((smb_command != SMB_COM_WRITE_ANDX) && |
| (smb_command != SMB_COM_OPEN_ANDX) && |
| (smb_command != SMB_COM_TREE_DISCONNECT)) { |
| cFYI(1,("can not send cmd %d while umounting", |
| smb_command)); |
| return -ENODEV; |
| } |
| } |
| if((tcon->ses) && (tcon->ses->status != CifsExiting) && |
| (tcon->ses->server)){ |
| struct nls_table *nls_codepage; |
| /* Give Demultiplex thread up to 10 seconds to |
| reconnect, should be greater than cifs socket |
| timeout which is 7 seconds */ |
| while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
| wait_event_interruptible_timeout(tcon->ses->server->response_q, |
| (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ); |
| if(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
| /* on "soft" mounts we wait once */ |
| if((tcon->retry == FALSE) || |
| (tcon->ses->status == CifsExiting)) { |
| cFYI(1,("gave up waiting on reconnect in smb_init")); |
| return -EHOSTDOWN; |
| } /* else "hard" mount - keep retrying |
| until process is killed or server |
| comes back on-line */ |
| } else /* TCP session is reestablished now */ |
| break; |
| |
| } |
| |
| nls_codepage = load_nls_default(); |
| /* need to prevent multiple threads trying to |
| simultaneously reconnect the same SMB session */ |
| down(&tcon->ses->sesSem); |
| if(tcon->ses->status == CifsNeedReconnect) |
| rc = cifs_setup_session(0, tcon->ses, |
| nls_codepage); |
| if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
| mark_open_files_invalid(tcon); |
| rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon |
| , nls_codepage); |
| up(&tcon->ses->sesSem); |
| /* BB FIXME add code to check if wsize needs |
| update due to negotiated smb buffer size |
| shrinking */ |
| if(rc == 0) |
| atomic_inc(&tconInfoReconnectCount); |
| |
| cFYI(1, ("reconnect tcon rc = %d", rc)); |
| /* Removed call to reopen open files here - |
| it is safer (and faster) to reopen files |
| one at a time as needed in read and write */ |
| |
| /* Check if handle based operation so we |
| know whether we can continue or not without |
| returning to caller to reset file handle */ |
| switch(smb_command) { |
| case SMB_COM_READ_ANDX: |
| case SMB_COM_WRITE_ANDX: |
| case SMB_COM_CLOSE: |
| case SMB_COM_FIND_CLOSE2: |
| case SMB_COM_LOCKING_ANDX: { |
| unload_nls(nls_codepage); |
| return -EAGAIN; |
| } |
| } |
| } else { |
| up(&tcon->ses->sesSem); |
| } |
| unload_nls(nls_codepage); |
| |
| } else { |
| return -EIO; |
| } |
| } |
| if(rc) |
| return rc; |
| |
| *request_buf = cifs_small_buf_get(); |
| if (*request_buf == NULL) { |
| /* BB should we add a retry in here if not a writepage? */ |
| return -ENOMEM; |
| } |
| |
| header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct); |
| |
| if(tcon != NULL) |
| cifs_stats_inc(&tcon->num_smbs_sent); |
| |
| return rc; |
| } |
| |
| #ifdef CONFIG_CIFS_EXPERIMENTAL |
| int |
| small_smb_init_no_tc(const int smb_command, const int wct, |
| struct cifsSesInfo *ses, void **request_buf) |
| { |
| int rc; |
| struct smb_hdr * buffer; |
| |
| rc = small_smb_init(smb_command, wct, NULL, request_buf); |
| if(rc) |
| return rc; |
| |
| buffer = (struct smb_hdr *)*request_buf; |
| buffer->Mid = GetNextMid(ses->server); |
| if (ses->capabilities & CAP_UNICODE) |
| buffer->Flags2 |= SMBFLG2_UNICODE; |
| if (ses->capabilities & CAP_STATUS32) |
| buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| |
| /* uid, tid can stay at zero as set in header assemble */ |
| |
| /* BB add support for turning on the signing when |
| this function is used after 1st of session setup requests */ |
| |
| return rc; |
| } |
| #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
| |
| /* If the return code is zero, this function must fill in request_buf pointer */ |
| static int |
| smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, |
| void **request_buf /* returned */ , |
| void **response_buf /* returned */ ) |
| { |
| int rc = 0; |
| |
| /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so |
| check for tcp and smb session status done differently |
| for those three - in the calling routine */ |
| if(tcon) { |
| if(tcon->tidStatus == CifsExiting) { |
| /* only tree disconnect, open, and write, |
| (and ulogoff which does not have tcon) |
| are allowed as we start force umount */ |
| if((smb_command != SMB_COM_WRITE_ANDX) && |
| (smb_command != SMB_COM_OPEN_ANDX) && |
| (smb_command != SMB_COM_TREE_DISCONNECT)) { |
| cFYI(1,("can not send cmd %d while umounting", |
| smb_command)); |
| return -ENODEV; |
| } |
| } |
| |
| if((tcon->ses) && (tcon->ses->status != CifsExiting) && |
| (tcon->ses->server)){ |
| struct nls_table *nls_codepage; |
| /* Give Demultiplex thread up to 10 seconds to |
| reconnect, should be greater than cifs socket |
| timeout which is 7 seconds */ |
| while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
| wait_event_interruptible_timeout(tcon->ses->server->response_q, |
| (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ); |
| if(tcon->ses->server->tcpStatus == |
| CifsNeedReconnect) { |
| /* on "soft" mounts we wait once */ |
| if((tcon->retry == FALSE) || |
| (tcon->ses->status == CifsExiting)) { |
| cFYI(1,("gave up waiting on reconnect in smb_init")); |
| return -EHOSTDOWN; |
| } /* else "hard" mount - keep retrying |
| until process is killed or server |
| comes on-line */ |
| } else /* TCP session is reestablished now */ |
| break; |
| |
| } |
| |
| nls_codepage = load_nls_default(); |
| /* need to prevent multiple threads trying to |
| simultaneously reconnect the same SMB session */ |
| down(&tcon->ses->sesSem); |
| if(tcon->ses->status == CifsNeedReconnect) |
| rc = cifs_setup_session(0, tcon->ses, |
| nls_codepage); |
| if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
| mark_open_files_invalid(tcon); |
| rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
| tcon, nls_codepage); |
| up(&tcon->ses->sesSem); |
| /* BB FIXME add code to check if wsize needs |
| update due to negotiated smb buffer size |
| shrinking */ |
| if(rc == 0) |
| atomic_inc(&tconInfoReconnectCount); |
| |
| cFYI(1, ("reconnect tcon rc = %d", rc)); |
| /* Removed call to reopen open files here - |
| it is safer (and faster) to reopen files |
| one at a time as needed in read and write */ |
| |
| /* Check if handle based operation so we |
| know whether we can continue or not without |
| returning to caller to reset file handle */ |
| switch(smb_command) { |
| case SMB_COM_READ_ANDX: |
| case SMB_COM_WRITE_ANDX: |
| case SMB_COM_CLOSE: |
| case SMB_COM_FIND_CLOSE2: |
| case SMB_COM_LOCKING_ANDX: { |
| unload_nls(nls_codepage); |
| return -EAGAIN; |
| } |
| } |
| } else { |
| up(&tcon->ses->sesSem); |
| } |
| unload_nls(nls_codepage); |
| |
| } else { |
| return -EIO; |
| } |
| } |
| if(rc) |
| return rc; |
| |
| *request_buf = cifs_buf_get(); |
| if (*request_buf == NULL) { |
| /* BB should we add a retry in here if not a writepage? */ |
| return -ENOMEM; |
| } |
| /* Although the original thought was we needed the response buf for */ |
| /* potential retries of smb operations it turns out we can determine */ |
| /* from the mid flags when the request buffer can be resent without */ |
| /* having to use a second distinct buffer for the response */ |
| *response_buf = *request_buf; |
| |
| header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, |
| wct /*wct */ ); |
| |
| if(tcon != NULL) |
| cifs_stats_inc(&tcon->num_smbs_sent); |
| |
| return rc; |
| } |
| |
| static int validate_t2(struct smb_t2_rsp * pSMB) |
| { |
| int rc = -EINVAL; |
| int total_size; |
| char * pBCC; |
| |
| /* check for plausible wct, bcc and t2 data and parm sizes */ |
| /* check for parm and data offset going beyond end of smb */ |
| if(pSMB->hdr.WordCount >= 10) { |
| if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && |
| (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
| /* check that bcc is at least as big as parms + data */ |
| /* check that bcc is less than negotiated smb buffer */ |
| total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); |
| if(total_size < 512) { |
| total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount); |
| /* BCC le converted in SendReceive */ |
| pBCC = (pSMB->hdr.WordCount * 2) + |
| sizeof(struct smb_hdr) + |
| (char *)pSMB; |
| if((total_size <= (*(u16 *)pBCC)) && |
| (total_size < |
| CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
| return 0; |
| } |
| |
| } |
| } |
| } |
| cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB, |
| sizeof(struct smb_t2_rsp) + 16); |
| return rc; |
| } |
| int |
| CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) |
| { |
| NEGOTIATE_REQ *pSMB; |
| NEGOTIATE_RSP *pSMBr; |
| int rc = 0; |
| int bytes_returned; |
| struct TCP_Server_Info * server; |
| u16 count; |
| |
| if(ses->server) |
| server = ses->server; |
| else { |
| rc = -EIO; |
| return rc; |
| } |
| rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
| (void **) &pSMB, (void **) &pSMBr); |
| if (rc) |
| return rc; |
| pSMB->hdr.Mid = GetNextMid(server); |
| pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; |
| if (extended_security) |
| pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
| |
| count = strlen(protocols[0].name) + 1; |
| strncpy(pSMB->DialectsArray, protocols[0].name, 30); |
| /* null guaranteed to be at end of source and target buffers anyway */ |
| |
| pSMB->hdr.smb_buf_length += count; |
| pSMB->ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc == 0) { |
| server->secMode = pSMBr->SecurityMode; |
| if((server->secMode & SECMODE_USER) == 0) |
| cFYI(1,("share mode security")); |
| server->secType = NTLM; /* BB override default for |
| NTLMv2 or kerberos v5 */ |
| /* one byte - no need to convert this or EncryptionKeyLen |
| from little endian */ |
| server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); |
| /* probably no need to store and check maxvcs */ |
| server->maxBuf = |
| min(le32_to_cpu(pSMBr->MaxBufferSize), |
| (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
| server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); |
| cFYI(0, ("Max buf = %d", ses->server->maxBuf)); |
| GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); |
| server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
| server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone); |
| /* BB with UTC do we ever need to be using srvr timezone? */ |
| if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
| memcpy(server->cryptKey, pSMBr->u.EncryptionKey, |
| CIFS_CRYPTO_KEY_SIZE); |
| } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) |
| && (pSMBr->EncryptionKeyLength == 0)) { |
| /* decode security blob */ |
| } else |
| rc = -EIO; |
| |
| /* BB might be helpful to save off the domain of server here */ |
| |
| if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
| (server->capabilities & CAP_EXTENDED_SECURITY)) { |
| count = pSMBr->ByteCount; |
| if (count < 16) |
| rc = -EIO; |
| else if (count == 16) { |
| server->secType = RawNTLMSSP; |
| if (server->socketUseCount.counter > 1) { |
| if (memcmp |
| (server->server_GUID, |
| pSMBr->u.extended_response. |
| GUID, 16) != 0) { |
| cFYI(1, ("server UID changed")); |
| memcpy(server-> |
| server_GUID, |
| pSMBr->u. |
| extended_response. |
| GUID, 16); |
| } |
| } else |
| memcpy(server->server_GUID, |
| pSMBr->u.extended_response. |
| GUID, 16); |
| } else { |
| rc = decode_negTokenInit(pSMBr->u. |
| extended_response. |
| SecurityBlob, |
| count - 16, |
| &server->secType); |
| if(rc == 1) { |
| /* BB Need to fill struct for sessetup here */ |
| rc = -EOPNOTSUPP; |
| } else { |
| rc = -EINVAL; |
| } |
| } |
| } else |
| server->capabilities &= ~CAP_EXTENDED_SECURITY; |
| if(sign_CIFS_PDUs == FALSE) { |
| if(server->secMode & SECMODE_SIGN_REQUIRED) |
| cERROR(1, |
| ("Server requires /proc/fs/cifs/PacketSigningEnabled")); |
| server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
| } else if(sign_CIFS_PDUs == 1) { |
| if((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
| server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
| } |
| |
| } |
| |
| cifs_buf_release(pSMB); |
| return rc; |
| } |
| |
| int |
| CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) |
| { |
| struct smb_hdr *smb_buffer; |
| struct smb_hdr *smb_buffer_response; /* BB removeme BB */ |
| int rc = 0; |
| int length; |
| |
| cFYI(1, ("In tree disconnect")); |
| /* |
| * If last user of the connection and |
| * connection alive - disconnect it |
| * If this is the last connection on the server session disconnect it |
| * (and inside session disconnect we should check if tcp socket needs |
| * to be freed and kernel thread woken up). |
| */ |
| if (tcon) |
| down(&tcon->tconSem); |
| else |
| return -EIO; |
| |
| atomic_dec(&tcon->useCount); |
| if (atomic_read(&tcon->useCount) > 0) { |
| up(&tcon->tconSem); |
| return -EBUSY; |
| } |
| |
| /* No need to return error on this operation if tid invalidated and |
| closed on server already e.g. due to tcp session crashing */ |
| if(tcon->tidStatus == CifsNeedReconnect) { |
| up(&tcon->tconSem); |
| return 0; |
| } |
| |
| if((tcon->ses == NULL) || (tcon->ses->server == NULL)) { |
| up(&tcon->tconSem); |
| return -EIO; |
| } |
| rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
| (void **)&smb_buffer); |
| if (rc) { |
| up(&tcon->tconSem); |
| return rc; |
| } else { |
| smb_buffer_response = smb_buffer; /* BB removeme BB */ |
| } |
| rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response, |
| &length, 0); |
| if (rc) |
| cFYI(1, ("Tree disconnect failed %d", rc)); |
| |
| if (smb_buffer) |
| cifs_small_buf_release(smb_buffer); |
| up(&tcon->tconSem); |
| |
| /* No need to return error on this operation if tid invalidated and |
| closed on server already e.g. due to tcp session crashing */ |
| if (rc == -EAGAIN) |
| rc = 0; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) |
| { |
| struct smb_hdr *smb_buffer_response; |
| LOGOFF_ANDX_REQ *pSMB; |
| int rc = 0; |
| int length; |
| |
| cFYI(1, ("In SMBLogoff for session disconnect")); |
| if (ses) |
| down(&ses->sesSem); |
| else |
| return -EIO; |
| |
| atomic_dec(&ses->inUse); |
| if (atomic_read(&ses->inUse) > 0) { |
| up(&ses->sesSem); |
| return -EBUSY; |
| } |
| rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
| if (rc) { |
| up(&ses->sesSem); |
| return rc; |
| } |
| |
| smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */ |
| |
| if(ses->server) { |
| pSMB->hdr.Mid = GetNextMid(ses->server); |
| |
| if(ses->server->secMode & |
| (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| } |
| |
| pSMB->hdr.Uid = ses->Suid; |
| |
| pSMB->AndXCommand = 0xFF; |
| rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, |
| smb_buffer_response, &length, 0); |
| if (ses->server) { |
| atomic_dec(&ses->server->socketUseCount); |
| if (atomic_read(&ses->server->socketUseCount) == 0) { |
| spin_lock(&GlobalMid_Lock); |
| ses->server->tcpStatus = CifsExiting; |
| spin_unlock(&GlobalMid_Lock); |
| rc = -ESHUTDOWN; |
| } |
| } |
| up(&ses->sesSem); |
| cifs_small_buf_release(pSMB); |
| |
| /* if session dead then we do not need to do ulogoff, |
| since server closed smb session, no sense reporting |
| error */ |
| if (rc == -EAGAIN) |
| rc = 0; |
| return rc; |
| } |
| |
| int |
| CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| DELETE_FILE_REQ *pSMB = NULL; |
| DELETE_FILE_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| |
| DelFileRetry: |
| rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->fileName, fileName, name_len); |
| } |
| pSMB->SearchAttributes = |
| cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); |
| pSMB->BufferFormat = 0x04; |
| pSMB->hdr.smb_buf_length += name_len + 1; |
| pSMB->ByteCount = cpu_to_le16(name_len + 1); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_deletes); |
| if (rc) { |
| cFYI(1, ("Error in RMFile = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto DelFileRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| DELETE_DIRECTORY_REQ *pSMB = NULL; |
| DELETE_DIRECTORY_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| |
| cFYI(1, ("In CIFSSMBRmDir")); |
| RmDirRetry: |
| rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve check for buffer overruns BB */ |
| name_len = strnlen(dirName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->DirName, dirName, name_len); |
| } |
| |
| pSMB->BufferFormat = 0x04; |
| pSMB->hdr.smb_buf_length += name_len + 1; |
| pSMB->ByteCount = cpu_to_le16(name_len + 1); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_rmdirs); |
| if (rc) { |
| cFYI(1, ("Error in RMDir = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto RmDirRetry; |
| return rc; |
| } |
| |
| int |
| CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, |
| const char *name, const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = 0; |
| CREATE_DIRECTORY_REQ *pSMB = NULL; |
| CREATE_DIRECTORY_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int name_len; |
| |
| cFYI(1, ("In CIFSSMBMkDir")); |
| MkDirRetry: |
| rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve check for buffer overruns BB */ |
| name_len = strnlen(name, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->DirName, name, name_len); |
| } |
| |
| pSMB->BufferFormat = 0x04; |
| pSMB->hdr.smb_buf_length += name_len + 1; |
| pSMB->ByteCount = cpu_to_le16(name_len + 1); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_mkdirs); |
| if (rc) { |
| cFYI(1, ("Error in Mkdir = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto MkDirRetry; |
| return rc; |
| } |
| |
| static __u16 convert_disposition(int disposition) |
| { |
| __u16 ofun = 0; |
| |
| switch (disposition) { |
| case FILE_SUPERSEDE: |
| ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; |
| break; |
| case FILE_OPEN: |
| ofun = SMBOPEN_OAPPEND; |
| break; |
| case FILE_CREATE: |
| ofun = SMBOPEN_OCREATE; |
| break; |
| case FILE_OPEN_IF: |
| ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; |
| break; |
| case FILE_OVERWRITE: |
| ofun = SMBOPEN_OTRUNC; |
| break; |
| case FILE_OVERWRITE_IF: |
| ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; |
| break; |
| default: |
| cFYI(1,("unknown disposition %d",disposition)); |
| ofun = SMBOPEN_OAPPEND; /* regular open */ |
| } |
| return ofun; |
| } |
| |
| int |
| SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, |
| const char *fileName, const int openDisposition, |
| const int access_flags, const int create_options, __u16 * netfid, |
| int *pOplock, FILE_ALL_INFO * pfile_info, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = -EACCES; |
| OPENX_REQ *pSMB = NULL; |
| OPENX_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int name_len; |
| __u16 count; |
| |
| OldOpenRetry: |
| rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->AndXCommand = 0xFF; /* none */ |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| count = 1; /* account for one byte pad to word boundary */ |
| name_len = |
| cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
| fileName, PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve check for buffer overruns BB */ |
| count = 0; /* no pad */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->fileName, fileName, name_len); |
| } |
| if (*pOplock & REQ_OPLOCK) |
| pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); |
| else if (*pOplock & REQ_BATCHOPLOCK) { |
| pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
| } |
| pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
| /* BB fixme add conversion for access_flags to bits 0 - 2 of mode */ |
| /* 0 = read |
| 1 = write |
| 2 = rw |
| 3 = execute |
| */ |
| pSMB->Mode = cpu_to_le16(2); |
| pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
| /* set file as system file if special file such |
| as fifo and server expecting SFU style and |
| no Unix extensions */ |
| |
| if(create_options & CREATE_OPTION_SPECIAL) |
| pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); |
| else |
| pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); /* BB FIXME */ |
| |
| /* if ((omode & S_IWUGO) == 0) |
| pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ |
| /* Above line causes problems due to vfs splitting create into two |
| pieces - need to set mode after file created not while it is |
| being created */ |
| |
| /* BB FIXME BB */ |
| /* pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); */ |
| /* BB FIXME END BB */ |
| |
| pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); |
| pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
| count += name_len; |
| pSMB->hdr.smb_buf_length += count; |
| |
| pSMB->ByteCount = cpu_to_le16(count); |
| /* long_op set to 1 to allow for oplock break timeouts */ |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 1); |
| cifs_stats_inc(&tcon->num_opens); |
| if (rc) { |
| cFYI(1, ("Error in Open = %d", rc)); |
| } else { |
| /* BB verify if wct == 15 */ |
| |
| /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field BB */ |
| |
| *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
| /* Let caller know file was created so we can set the mode. */ |
| /* Do we care about the CreateAction in any other cases? */ |
| /* BB FIXME BB */ |
| /* if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
| *pOplock |= CIFS_CREATE_ACTION; */ |
| /* BB FIXME END */ |
| |
| if(pfile_info) { |
| pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
| pfile_info->LastAccessTime = 0; /* BB fixme */ |
| pfile_info->LastWriteTime = 0; /* BB fixme */ |
| pfile_info->ChangeTime = 0; /* BB fixme */ |
| pfile_info->Attributes = |
| cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
| /* the file_info buf is endian converted by caller */ |
| pfile_info->AllocationSize = |
| cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); |
| pfile_info->EndOfFile = pfile_info->AllocationSize; |
| pfile_info->NumberOfLinks = cpu_to_le32(1); |
| } |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto OldOpenRetry; |
| return rc; |
| } |
| |
| int |
| CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, |
| const char *fileName, const int openDisposition, |
| const int access_flags, const int create_options, __u16 * netfid, |
| int *pOplock, FILE_ALL_INFO * pfile_info, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = -EACCES; |
| OPEN_REQ *pSMB = NULL; |
| OPEN_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int name_len; |
| __u16 count; |
| |
| openRetry: |
| rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->AndXCommand = 0xFF; /* none */ |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| count = 1; /* account for one byte pad to word boundary */ |
| name_len = |
| cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
| fileName, PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| pSMB->NameLength = cpu_to_le16(name_len); |
| } else { /* BB improve check for buffer overruns BB */ |
| count = 0; /* no pad */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| pSMB->NameLength = cpu_to_le16(name_len); |
| strncpy(pSMB->fileName, fileName, name_len); |
| } |
| if (*pOplock & REQ_OPLOCK) |
| pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); |
| else if (*pOplock & REQ_BATCHOPLOCK) { |
| pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
| } |
| pSMB->DesiredAccess = cpu_to_le32(access_flags); |
| pSMB->AllocationSize = 0; |
| /* set file as system file if special file such |
| as fifo and server expecting SFU style and |
| no Unix extensions */ |
| if(create_options & CREATE_OPTION_SPECIAL) |
| pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
| else |
| pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
| /* XP does not handle ATTR_POSIX_SEMANTICS */ |
| /* but it helps speed up case sensitive checks for other |
| servers such as Samba */ |
| if (tcon->ses->capabilities & CAP_UNIX) |
| pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
| |
| /* if ((omode & S_IWUGO) == 0) |
| pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ |
| /* Above line causes problems due to vfs splitting create into two |
| pieces - need to set mode after file created not while it is |
| being created */ |
| pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
| pSMB->CreateDisposition = cpu_to_le32(openDisposition); |
| pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
| /* BB Expirement with various impersonation levels and verify */ |
| pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
| pSMB->SecurityFlags = |
| SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; |
| |
| count += name_len; |
| pSMB->hdr.smb_buf_length += count; |
| |
| pSMB->ByteCount = cpu_to_le16(count); |
| /* long_op set to 1 to allow for oplock break timeouts */ |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 1); |
| cifs_stats_inc(&tcon->num_opens); |
| if (rc) { |
| cFYI(1, ("Error in Open = %d", rc)); |
| } else { |
| *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
| *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
| /* Let caller know file was created so we can set the mode. */ |
| /* Do we care about the CreateAction in any other cases? */ |
| if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
| *pOplock |= CIFS_CREATE_ACTION; |
| if(pfile_info) { |
| memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime, |
| 36 /* CreationTime to Attributes */); |
| /* the file_info buf is endian converted by caller */ |
| pfile_info->AllocationSize = pSMBr->AllocationSize; |
| pfile_info->EndOfFile = pSMBr->EndOfFile; |
| pfile_info->NumberOfLinks = cpu_to_le32(1); |
| } |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto openRetry; |
| return rc; |
| } |
| |
| int |
| CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, |
| const int netfid, const unsigned int count, |
| const __u64 lseek, unsigned int *nbytes, char **buf, |
| int * pbuf_type) |
| { |
| int rc = -EACCES; |
| READ_REQ *pSMB = NULL; |
| READ_RSP *pSMBr = NULL; |
| char *pReadData = NULL; |
| int wct; |
| int resp_buf_type = 0; |
| struct kvec iov[1]; |
| |
| cFYI(1,("Reading %d bytes on fid %d",count,netfid)); |
| if(tcon->ses->capabilities & CAP_LARGE_FILES) |
| wct = 12; |
| else |
| wct = 10; /* old style read */ |
| |
| *nbytes = 0; |
| rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
| if (rc) |
| return rc; |
| |
| /* tcon and ses pointer are checked in smb_init */ |
| if (tcon->ses->server == NULL) |
| return -ECONNABORTED; |
| |
| pSMB->AndXCommand = 0xFF; /* none */ |
| pSMB->Fid = netfid; |
| pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); |
| if(wct == 12) |
| pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
| else if((lseek >> 32) > 0) /* can not handle this big offset for old */ |
| return -EIO; |
| |
| pSMB->Remaining = 0; |
| pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); |
| pSMB->MaxCountHigh = cpu_to_le32(count >> 16); |
| if(wct == 12) |
| pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
| else { |
| /* old style read */ |
| struct smb_com_readx_req * pSMBW = |
| (struct smb_com_readx_req *)pSMB; |
| pSMBW->ByteCount = 0; |
| } |
| |
| iov[0].iov_base = (char *)pSMB; |
| iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; |
| rc = SendReceive2(xid, tcon->ses, iov, |
| 1 /* num iovecs */, |
| &resp_buf_type, 0); |
| cifs_stats_inc(&tcon->num_reads); |
| pSMBr = (READ_RSP *)iov[0].iov_base; |
| if (rc) { |
| cERROR(1, ("Send error in read = %d", rc)); |
| } else { |
| int data_length = le16_to_cpu(pSMBr->DataLengthHigh); |
| data_length = data_length << 16; |
| data_length += le16_to_cpu(pSMBr->DataLength); |
| *nbytes = data_length; |
| |
| /*check that DataLength would not go beyond end of SMB */ |
| if ((data_length > CIFSMaxBufSize) |
| || (data_length > count)) { |
| cFYI(1,("bad length %d for count %d",data_length,count)); |
| rc = -EIO; |
| *nbytes = 0; |
| } else { |
| pReadData = (char *) (&pSMBr->hdr.Protocol) + |
| le16_to_cpu(pSMBr->DataOffset); |
| /* if(rc = copy_to_user(buf, pReadData, data_length)) { |
| cERROR(1,("Faulting on read rc = %d",rc)); |
| rc = -EFAULT; |
| }*/ /* can not use copy_to_user when using page cache*/ |
| if(*buf) |
| memcpy(*buf,pReadData,data_length); |
| } |
| } |
| |
| /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
| if(*buf) { |
| if(resp_buf_type == CIFS_SMALL_BUFFER) |
| cifs_small_buf_release(iov[0].iov_base); |
| else if(resp_buf_type == CIFS_LARGE_BUFFER) |
| cifs_buf_release(iov[0].iov_base); |
| } else if(resp_buf_type != CIFS_NO_BUFFER) { |
| /* return buffer to caller to free */ |
| *buf = iov[0].iov_base; |
| if(resp_buf_type == CIFS_SMALL_BUFFER) |
| *pbuf_type = CIFS_SMALL_BUFFER; |
| else if(resp_buf_type == CIFS_LARGE_BUFFER) |
| *pbuf_type = CIFS_LARGE_BUFFER; |
| } /* else no valid buffer on return - leave as null */ |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| return rc; |
| } |
| |
| |
| int |
| CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, |
| const int netfid, const unsigned int count, |
| const __u64 offset, unsigned int *nbytes, const char *buf, |
| const char __user * ubuf, const int long_op) |
| { |
| int rc = -EACCES; |
| WRITE_REQ *pSMB = NULL; |
| WRITE_RSP *pSMBr = NULL; |
| int bytes_returned, wct; |
| __u32 bytes_sent; |
| __u16 byte_count; |
| |
| /* cFYI(1,("write at %lld %d bytes",offset,count));*/ |
| if(tcon->ses == NULL) |
| return -ECONNABORTED; |
| |
| if(tcon->ses->capabilities & CAP_LARGE_FILES) |
| wct = 14; |
| else |
| wct = 12; |
| |
| rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| /* tcon and ses pointer are checked in smb_init */ |
| if (tcon->ses->server == NULL) |
| return -ECONNABORTED; |
| |
| pSMB->AndXCommand = 0xFF; /* none */ |
| pSMB->Fid = netfid; |
| pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
| if(wct == 14) |
| pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
| else if((offset >> 32) > 0) /* can not handle this big offset for old */ |
| return -EIO; |
| |
| pSMB->Reserved = 0xFFFFFFFF; |
| pSMB->WriteMode = 0; |
| pSMB->Remaining = 0; |
| |
| /* Can increase buffer size if buffer is big enough in some cases - ie we |
| can send more if LARGE_WRITE_X capability returned by the server and if |
| our buffer is big enough or if we convert to iovecs on socket writes |
| and eliminate the copy to the CIFS buffer */ |
| if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
| bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
| } else { |
| bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) |
| & ~0xFF; |
| } |
| |
| if (bytes_sent > count) |
| bytes_sent = count; |
| pSMB->DataOffset = |
| cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); |
| if(buf) |
| memcpy(pSMB->Data,buf,bytes_sent); |
| else if(ubuf) { |
| if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) { |
| cifs_buf_release(pSMB); |
| return -EFAULT; |
| } |
| } else if (count != 0) { |
| /* No buffer */ |
| cifs_buf_release(pSMB); |
| return -EINVAL; |
| } /* else setting file size with write of zero bytes */ |
| if(wct == 14) |
| byte_count = bytes_sent + 1; /* pad */ |
| else /* wct == 12 */ { |
| byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
| } |
| pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
| pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); |
| pSMB->hdr.smb_buf_length += byte_count; |
| |
| if(wct == 14) |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| else { /* old style write has byte count 4 bytes earlier so 4 bytes pad */ |
| struct smb_com_writex_req * pSMBW = |
| (struct smb_com_writex_req *)pSMB; |
| pSMBW->ByteCount = cpu_to_le16(byte_count); |
| } |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, long_op); |
| cifs_stats_inc(&tcon->num_writes); |
| if (rc) { |
| cFYI(1, ("Send error in write = %d", rc)); |
| *nbytes = 0; |
| } else { |
| *nbytes = le16_to_cpu(pSMBr->CountHigh); |
| *nbytes = (*nbytes) << 16; |
| *nbytes += le16_to_cpu(pSMBr->Count); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, |
| const int netfid, const unsigned int count, |
| const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
| int n_vec, const int long_op) |
| { |
| int rc = -EACCES; |
| WRITE_REQ *pSMB = NULL; |
| int wct; |
| int smb_hdr_len; |
| int resp_buf_type = 0; |
| |
| cFYI(1,("write2 at %lld %d bytes", (long long)offset, count)); |
| |
| if(tcon->ses->capabilities & CAP_LARGE_FILES) |
| wct = 14; |
| else |
| wct = 12; |
| rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
| if (rc) |
| return rc; |
| /* tcon and ses pointer are checked in smb_init */ |
| if (tcon->ses->server == NULL) |
| return -ECONNABORTED; |
| |
| pSMB->AndXCommand = 0xFF; /* none */ |
| pSMB->Fid = netfid; |
| pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
| if(wct == 14) |
| pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
| else if((offset >> 32) > 0) /* can not handle this big offset for old */ |
| return -EIO; |
| pSMB->Reserved = 0xFFFFFFFF; |
| pSMB->WriteMode = 0; |
| pSMB->Remaining = 0; |
| |
| pSMB->DataOffset = |
| cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); |
| |
| pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
| pSMB->DataLengthHigh = cpu_to_le16(count >> 16); |
| smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
| if(wct == 14) |
| pSMB->hdr.smb_buf_length += count+1; |
| else /* wct == 12 */ |
| pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
| if(wct == 14) |
| pSMB->ByteCount = cpu_to_le16(count + 1); |
| else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { |
| struct smb_com_writex_req * pSMBW = |
| (struct smb_com_writex_req *)pSMB; |
| pSMBW->ByteCount = cpu_to_le16(count + 5); |
| } |
| iov[0].iov_base = pSMB; |
| if(wct == 14) |
| iov[0].iov_len = smb_hdr_len + 4; |
| else /* wct == 12 pad bigger by four bytes */ |
| iov[0].iov_len = smb_hdr_len + 8; |
| |
| |
| rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
| long_op); |
| cifs_stats_inc(&tcon->num_writes); |
| if (rc) { |
| cFYI(1, ("Send error Write2 = %d", rc)); |
| *nbytes = 0; |
| } else if(resp_buf_type == 0) { |
| /* presumably this can not happen, but best to be safe */ |
| rc = -EIO; |
| *nbytes = 0; |
| } else { |
| WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base; |
| *nbytes = le16_to_cpu(pSMBr->CountHigh); |
| *nbytes = (*nbytes) << 16; |
| *nbytes += le16_to_cpu(pSMBr->Count); |
| } |
| |
| /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
| if(resp_buf_type == CIFS_SMALL_BUFFER) |
| cifs_small_buf_release(iov[0].iov_base); |
| else if(resp_buf_type == CIFS_LARGE_BUFFER) |
| cifs_buf_release(iov[0].iov_base); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| |
| int |
| CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, |
| const __u16 smb_file_id, const __u64 len, |
| const __u64 offset, const __u32 numUnlock, |
| const __u32 numLock, const __u8 lockType, const int waitFlag) |
| { |
| int rc = 0; |
| LOCK_REQ *pSMB = NULL; |
| LOCK_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int timeout = 0; |
| __u16 count; |
| |
| cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock)); |
| rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
| |
| if (rc) |
| return rc; |
| |
| pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */ |
| |
| if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
| timeout = -1; /* no response expected */ |
| pSMB->Timeout = 0; |
| } else if (waitFlag == TRUE) { |
| timeout = 3; /* blocking operation, no timeout */ |
| pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
| } else { |
| pSMB->Timeout = 0; |
| } |
| |
| pSMB->NumberOfLocks = cpu_to_le16(numLock); |
| pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); |
| pSMB->LockType = lockType; |
| pSMB->AndXCommand = 0xFF; /* none */ |
| pSMB->Fid = smb_file_id; /* netfid stays le */ |
| |
| if((numLock != 0) || (numUnlock != 0)) { |
| pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
| /* BB where to store pid high? */ |
| pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); |
| pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); |
| pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); |
| pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); |
| count = sizeof(LOCKING_ANDX_RANGE); |
| } else { |
| /* oplock break */ |
| count = 0; |
| } |
| pSMB->hdr.smb_buf_length += count; |
| pSMB->ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, timeout); |
| cifs_stats_inc(&tcon->num_locks); |
| if (rc) { |
| cFYI(1, ("Send error in Lock = %d", rc)); |
| } |
| cifs_small_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| return rc; |
| } |
| |
| int |
| CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, |
| const __u16 smb_file_id, const int get_flag, const __u64 len, |
| const __u64 lkoffset, const __u16 lock_type, const int waitFlag) |
| { |
| struct smb_com_transaction2_sfi_req *pSMB = NULL; |
| struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
| char *data_offset; |
| struct cifs_posix_lock *parm_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, offset, byte_count, count; |
| |
| cFYI(1, ("Posix Lock")); |
| rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
| |
| if (rc) |
| return rc; |
| |
| pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
| |
| params = 6; |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
| offset = param_offset + params; |
| |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| |
| count = sizeof(struct cifs_posix_lock); |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| if(get_flag) |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
| else |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
| byte_count = 3 /* pad */ + params + count; |
| pSMB->DataCount = cpu_to_le16(count); |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| parm_data = (struct cifs_posix_lock *) |
| (((char *) &pSMB->hdr.Protocol) + offset); |
| |
| parm_data->lock_type = cpu_to_le16(lock_type); |
| if(waitFlag) |
| parm_data->lock_flags = 1; |
| parm_data->pid = cpu_to_le32(current->tgid); |
| parm_data->start = lkoffset; |
| parm_data->length = len; /* normalize negative numbers */ |
| |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in Posix Lock = %d", rc)); |
| } |
| |
| if (pSMB) |
| cifs_small_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| |
| int |
| CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) |
| { |
| int rc = 0; |
| CLOSE_REQ *pSMB = NULL; |
| CLOSE_RSP *pSMBr = NULL; |
| int bytes_returned; |
| cFYI(1, ("In CIFSSMBClose")); |
| |
| /* do not retry on dead session on close */ |
| rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); |
| if(rc == -EAGAIN) |
| return 0; |
| if (rc) |
| return rc; |
| |
| pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ |
| |
| pSMB->FileID = (__u16) smb_file_id; |
| pSMB->LastWriteTime = 0; |
| pSMB->ByteCount = 0; |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_closes); |
| if (rc) { |
| if(rc!=-EINTR) { |
| /* EINTR is expected when user ctl-c to kill app */ |
| cERROR(1, ("Send error in Close = %d", rc)); |
| } |
| } |
| |
| cifs_small_buf_release(pSMB); |
| |
| /* Since session is dead, file will be closed on server already */ |
| if(rc == -EAGAIN) |
| rc = 0; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, |
| const char *fromName, const char *toName, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = 0; |
| RENAME_REQ *pSMB = NULL; |
| RENAME_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int name_len, name_len2; |
| __u16 count; |
| |
| cFYI(1, ("In CIFSSMBRename")); |
| renameRetry: |
| rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->BufferFormat = 0x04; |
| pSMB->SearchAttributes = |
| cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
| ATTR_DIRECTORY); |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| pSMB->OldFileName[name_len] = 0x04; /* pad */ |
| /* protocol requires ASCII signature byte on Unicode string */ |
| pSMB->OldFileName[name_len + 1] = 0x00; |
| name_len2 = |
| cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2], |
| toName, PATH_MAX, nls_codepage, remap); |
| name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
| name_len2 *= 2; /* convert to bytes */ |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fromName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->OldFileName, fromName, name_len); |
| name_len2 = strnlen(toName, PATH_MAX); |
| name_len2++; /* trailing null */ |
| pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
| strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); |
| name_len2++; /* trailing null */ |
| name_len2++; /* signature byte */ |
| } |
| |
| count = 1 /* 1st signature byte */ + name_len + name_len2; |
| pSMB->hdr.smb_buf_length += count; |
| pSMB->ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_renames); |
| if (rc) { |
| cFYI(1, ("Send error in rename = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto renameRetry; |
| |
| return rc; |
| } |
| |
| int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon, |
| int netfid, char * target_name, |
| const struct nls_table * nls_codepage, int remap) |
| { |
| struct smb_com_transaction2_sfi_req *pSMB = NULL; |
| struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
| struct set_file_rename * rename_info; |
| char *data_offset; |
| char dummy_string[30]; |
| int rc = 0; |
| int bytes_returned = 0; |
| int len_of_str; |
| __u16 params, param_offset, offset, count, byte_count; |
| |
| cFYI(1, ("Rename to File by handle")); |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 6; |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
| offset = param_offset + params; |
| |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| rename_info = (struct set_file_rename *) data_offset; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
| byte_count = 3 /* pad */ + params; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| /* construct random name ".cifs_tmp<inodenum><mid>" */ |
| rename_info->overwrite = cpu_to_le32(1); |
| rename_info->root_fid = 0; |
| /* unicode only call */ |
| if(target_name == NULL) { |
| sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid); |
| len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
| dummy_string, 24, nls_codepage, remap); |
| } else { |
| len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
| target_name, PATH_MAX, nls_codepage, remap); |
| } |
| rename_info->target_name_len = cpu_to_le32(2 * len_of_str); |
| count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2; |
| byte_count += count; |
| pSMB->DataCount = cpu_to_le16(count); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->Fid = netfid; |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&pTcon->num_t2renames); |
| if (rc) { |
| cFYI(1,("Send error in Rename (by file handle) = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName, |
| const __u16 target_tid, const char *toName, const int flags, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = 0; |
| COPY_REQ *pSMB = NULL; |
| COPY_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int name_len, name_len2; |
| __u16 count; |
| |
| cFYI(1, ("In CIFSSMBCopy")); |
| copyRetry: |
| rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->BufferFormat = 0x04; |
| pSMB->Tid2 = target_tid; |
| |
| pSMB->Flags = cpu_to_le16(flags & COPY_TREE); |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
| fromName, PATH_MAX, nls_codepage, |
| remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| pSMB->OldFileName[name_len] = 0x04; /* pad */ |
| /* protocol requires ASCII signature byte on Unicode string */ |
| pSMB->OldFileName[name_len + 1] = 0x00; |
| name_len2 = cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
| toName, PATH_MAX, nls_codepage, remap); |
| name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
| name_len2 *= 2; /* convert to bytes */ |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fromName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->OldFileName, fromName, name_len); |
| name_len2 = strnlen(toName, PATH_MAX); |
| name_len2++; /* trailing null */ |
| pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
| strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); |
| name_len2++; /* trailing null */ |
| name_len2++; /* signature byte */ |
| } |
| |
| count = 1 /* 1st signature byte */ + name_len + name_len2; |
| pSMB->hdr.smb_buf_length += count; |
| pSMB->ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in copy = %d with %d files copied", |
| rc, le16_to_cpu(pSMBr->CopyCount))); |
| } |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto copyRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, |
| const char *fromName, const char *toName, |
| const struct nls_table *nls_codepage) |
| { |
| TRANSACTION2_SPI_REQ *pSMB = NULL; |
| TRANSACTION2_SPI_RSP *pSMBr = NULL; |
| char *data_offset; |
| int name_len; |
| int name_len_target; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, offset, byte_count; |
| |
| cFYI(1, ("In Symlink Unix style")); |
| createSymLinkRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
| /* find define for this maxpathcomponent */ |
| , nls_codepage); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fromName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, fromName, name_len); |
| } |
| params = 6 + name_len; |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len_target = |
| cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
| /* find define for this maxpathcomponent */ |
| , nls_codepage); |
| name_len_target++; /* trailing null */ |
| name_len_target *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len_target = strnlen(toName, PATH_MAX); |
| name_len_target++; /* trailing null */ |
| strncpy(data_offset, toName, name_len_target); |
| } |
| |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| /* BB find exact max on data count below from sess */ |
| pSMB->MaxDataCount = cpu_to_le16(1000); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| byte_count = 3 /* pad */ + params + name_len_target; |
| pSMB->DataCount = cpu_to_le16(name_len_target); |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_symlinks); |
| if (rc) { |
| cFYI(1, |
| ("Send error in SetPathInfo (create symlink) = %d", |
| rc)); |
| } |
| |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto createSymLinkRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, |
| const char *fromName, const char *toName, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| TRANSACTION2_SPI_REQ *pSMB = NULL; |
| TRANSACTION2_SPI_RSP *pSMBr = NULL; |
| char *data_offset; |
| int name_len; |
| int name_len_target; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, offset, byte_count; |
| |
| cFYI(1, ("In Create Hard link Unix style")); |
| createHardLinkRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(toName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, toName, name_len); |
| } |
| params = 6 + name_len; |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len_target = |
| cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
| nls_codepage, remap); |
| name_len_target++; /* trailing null */ |
| name_len_target *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len_target = strnlen(fromName, PATH_MAX); |
| name_len_target++; /* trailing null */ |
| strncpy(data_offset, fromName, name_len_target); |
| } |
| |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| /* BB find exact max on data count below from sess*/ |
| pSMB->MaxDataCount = cpu_to_le16(1000); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| byte_count = 3 /* pad */ + params + name_len_target; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->DataCount = cpu_to_le16(name_len_target); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_hardlinks); |
| if (rc) { |
| cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto createHardLinkRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, |
| const char *fromName, const char *toName, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = 0; |
| NT_RENAME_REQ *pSMB = NULL; |
| RENAME_RSP *pSMBr = NULL; |
| int bytes_returned; |
| int name_len, name_len2; |
| __u16 count; |
| |
| cFYI(1, ("In CIFSCreateHardLink")); |
| winCreateHardLinkRetry: |
| |
| rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->SearchAttributes = |
| cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
| ATTR_DIRECTORY); |
| pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); |
| pSMB->ClusterCount = 0; |
| |
| pSMB->BufferFormat = 0x04; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| pSMB->OldFileName[name_len] = 0; /* pad */ |
| pSMB->OldFileName[name_len + 1] = 0x04; |
| name_len2 = |
| cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
| toName, PATH_MAX, nls_codepage, remap); |
| name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
| name_len2 *= 2; /* convert to bytes */ |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fromName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->OldFileName, fromName, name_len); |
| name_len2 = strnlen(toName, PATH_MAX); |
| name_len2++; /* trailing null */ |
| pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
| strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); |
| name_len2++; /* trailing null */ |
| name_len2++; /* signature byte */ |
| } |
| |
| count = 1 /* string type byte */ + name_len + name_len2; |
| pSMB->hdr.smb_buf_length += count; |
| pSMB->ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_hardlinks); |
| if (rc) { |
| cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); |
| } |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto winCreateHardLinkRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| char *symlinkinfo, const int buflen, |
| const struct nls_table *nls_codepage) |
| { |
| /* SMB_QUERY_FILE_UNIX_LINK */ |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); |
| |
| querySymLinkRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX |
| /* find define for this maxpathcomponent */ |
| , nls_codepage); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| /* BB find exact max data count below from sess structure BB */ |
| pSMB->MaxDataCount = cpu_to_le16(4000); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); |
| } else { |
| /* decode response */ |
| |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| if (rc || (pSMBr->ByteCount < 2)) |
| /* BB also check enough total bytes returned */ |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| __u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
| |
| if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = UniStrnlen((wchar_t *) ((char *) |
| &pSMBr->hdr.Protocol +data_offset), |
| min_t(const int, buflen,count) / 2); |
| /* BB FIXME investigate remapping reserved chars here */ |
| cifs_strfromUCS_le(symlinkinfo, |
| (__le16 *) ((char *)&pSMBr->hdr.Protocol + |
| data_offset), |
| name_len, nls_codepage); |
| } else { |
| strncpy(symlinkinfo, |
| (char *) &pSMBr->hdr.Protocol + |
| data_offset, |
| min_t(const int, buflen, count)); |
| } |
| symlinkinfo[buflen] = 0; |
| /* just in case so calling code does not go off the end of buffer */ |
| } |
| } |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto querySymLinkRetry; |
| return rc; |
| } |
| |
| /* Initialize NT TRANSACT SMB into small smb request buffer. |
| This assumes that all NT TRANSACTS that we init here have |
| total parm and data under about 400 bytes (to fit in small cifs |
| buffer size), which is the case so far, it easily fits. NB: |
| Setup words themselves and ByteCount |
| MaxSetupCount (size of returned setup area) and |
| MaxParameterCount (returned parms size) must be set by caller */ |
| static int |
| smb_init_ntransact(const __u16 sub_command, const int setup_count, |
| const int parm_len, struct cifsTconInfo *tcon, |
| void ** ret_buf) |
| { |
| int rc; |
| __u32 temp_offset; |
| struct smb_com_ntransact_req * pSMB; |
| |
| rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, |
| (void **)&pSMB); |
| if (rc) |
| return rc; |
| *ret_buf = (void *)pSMB; |
| pSMB->Reserved = 0; |
| pSMB->TotalParameterCount = cpu_to_le32(parm_len); |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
| MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->DataCount = pSMB->TotalDataCount; |
| temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + |
| (setup_count * 2) - 4 /* for rfc1001 length itself */; |
| pSMB->ParameterOffset = cpu_to_le32(temp_offset); |
| pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); |
| pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ |
| pSMB->SubCommand = cpu_to_le16(sub_command); |
| return 0; |
| } |
| |
| static int |
| validate_ntransact(char * buf, char ** ppparm, char ** ppdata, |
| int * pdatalen, int * pparmlen) |
| { |
| char * end_of_smb; |
| __u32 data_count, data_offset, parm_count, parm_offset; |
| struct smb_com_ntransact_rsp * pSMBr; |
| |
| if(buf == NULL) |
| return -EINVAL; |
| |
| pSMBr = (struct smb_com_ntransact_rsp *)buf; |
| |
| /* ByteCount was converted from little endian in SendReceive */ |
| end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
| (char *)&pSMBr->ByteCount; |
| |
| |
| data_offset = le32_to_cpu(pSMBr->DataOffset); |
| data_count = le32_to_cpu(pSMBr->DataCount); |
| parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
| parm_count = le32_to_cpu(pSMBr->ParameterCount); |
| |
| *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; |
| *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; |
| |
| /* should we also check that parm and data areas do not overlap? */ |
| if(*ppparm > end_of_smb) { |
| cFYI(1,("parms start after end of smb")); |
| return -EINVAL; |
| } else if(parm_count + *ppparm > end_of_smb) { |
| cFYI(1,("parm end after end of smb")); |
| return -EINVAL; |
| } else if(*ppdata > end_of_smb) { |
| cFYI(1,("data starts after end of smb")); |
| return -EINVAL; |
| } else if(data_count + *ppdata > end_of_smb) { |
| cFYI(1,("data %p + count %d (%p) ends after end of smb %p start %p", |
| *ppdata, data_count, (data_count + *ppdata), end_of_smb, pSMBr)); /* BB FIXME */ |
| return -EINVAL; |
| } else if(parm_count + data_count > pSMBr->ByteCount) { |
| cFYI(1,("parm count and data count larger than SMB")); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| int |
| CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| char *symlinkinfo, const int buflen,__u16 fid, |
| const struct nls_table *nls_codepage) |
| { |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| struct smb_com_transaction_ioctl_req * pSMB; |
| struct smb_com_transaction_ioctl_rsp * pSMBr; |
| |
| cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); |
| rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->TotalParameterCount = 0 ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le32(2); |
| /* BB find exact data count max from sess structure BB */ |
| pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
| MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); |
| pSMB->MaxSetupCount = 4; |
| pSMB->Reserved = 0; |
| pSMB->ParameterOffset = 0; |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 4; |
| pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); |
| pSMB->IsFsctl = 1; /* FSCTL */ |
| pSMB->IsRootFlag = 0; |
| pSMB->Fid = fid; /* file handle always le */ |
| pSMB->ByteCount = 0; |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); |
| } else { /* decode response */ |
| __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); |
| __u32 data_count = le32_to_cpu(pSMBr->DataCount); |
| if ((pSMBr->ByteCount < 2) || (data_offset > 512)) |
| /* BB also check enough total bytes returned */ |
| rc = -EIO; /* bad smb */ |
| else { |
| if(data_count && (data_count < 2048)) { |
| char * end_of_smb = 2 /* sizeof byte count */ + |
| pSMBr->ByteCount + |
| (char *)&pSMBr->ByteCount; |
| |
| struct reparse_data * reparse_buf = (struct reparse_data *) |
| ((char *)&pSMBr->hdr.Protocol + data_offset); |
| if((char*)reparse_buf >= end_of_smb) { |
| rc = -EIO; |
| goto qreparse_out; |
| } |
| if((reparse_buf->LinkNamesBuf + |
| reparse_buf->TargetNameOffset + |
| reparse_buf->TargetNameLen) > |
| end_of_smb) { |
| cFYI(1,("reparse buf extended beyond SMB")); |
| rc = -EIO; |
| goto qreparse_out; |
| } |
| |
| if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = UniStrnlen((wchar_t *) |
| (reparse_buf->LinkNamesBuf + |
| reparse_buf->TargetNameOffset), |
| min(buflen/2, reparse_buf->TargetNameLen / 2)); |
| cifs_strfromUCS_le(symlinkinfo, |
| (__le16 *) (reparse_buf->LinkNamesBuf + |
| reparse_buf->TargetNameOffset), |
| name_len, nls_codepage); |
| } else { /* ASCII names */ |
| strncpy(symlinkinfo,reparse_buf->LinkNamesBuf + |
| reparse_buf->TargetNameOffset, |
| min_t(const int, buflen, reparse_buf->TargetNameLen)); |
| } |
| } else { |
| rc = -EIO; |
| cFYI(1,("Invalid return data count on get reparse info ioctl")); |
| } |
| symlinkinfo[buflen] = 0; /* just in case so the caller |
| does not go off the end of the buffer */ |
| cFYI(1,("readlink result - %s ",symlinkinfo)); |
| } |
| } |
| qreparse_out: |
| cifs_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| #ifdef CONFIG_CIFS_POSIX |
| |
| /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ |
| static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace) |
| { |
| /* u8 cifs fields do not need le conversion */ |
| ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
| ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); |
| ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); |
| /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
| |
| return; |
| } |
| |
| /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ |
| static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen, |
| const int acl_type,const int size_of_data_area) |
| { |
| int size = 0; |
| int i; |
| __u16 count; |
| struct cifs_posix_ace * pACE; |
| struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src; |
| posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt; |
| |
| if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) |
| return -EOPNOTSUPP; |
| |
| if(acl_type & ACL_TYPE_ACCESS) { |
| count = le16_to_cpu(cifs_acl->access_entry_count); |
| pACE = &cifs_acl->ace_array[0]; |
| size = sizeof(struct cifs_posix_acl); |
| size += sizeof(struct cifs_posix_ace) * count; |
| /* check if we would go beyond end of SMB */ |
| if(size_of_data_area < size) { |
| cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size)); |
| return -EINVAL; |
| } |
| } else if(acl_type & ACL_TYPE_DEFAULT) { |
| count = le16_to_cpu(cifs_acl->access_entry_count); |
| size = sizeof(struct cifs_posix_acl); |
| size += sizeof(struct cifs_posix_ace) * count; |
| /* skip past access ACEs to get to default ACEs */ |
| pACE = &cifs_acl->ace_array[count]; |
| count = le16_to_cpu(cifs_acl->default_entry_count); |
| size += sizeof(struct cifs_posix_ace) * count; |
| /* check if we would go beyond end of SMB */ |
| if(size_of_data_area < size) |
| return -EINVAL; |
| } else { |
| /* illegal type */ |
| return -EINVAL; |
| } |
| |
| size = posix_acl_xattr_size(count); |
| if((buflen == 0) || (local_acl == NULL)) { |
| /* used to query ACL EA size */ |
| } else if(size > buflen) { |
| return -ERANGE; |
| } else /* buffer big enough */ { |
| local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
| for(i = 0;i < count ;i++) { |
| cifs_convert_ace(&local_acl->a_entries[i],pACE); |
| pACE ++; |
| } |
| } |
| return size; |
| } |
| |
| static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace, |
| const posix_acl_xattr_entry * local_ace) |
| { |
| __u16 rc = 0; /* 0 = ACL converted ok */ |
| |
| cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
| cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); |
| /* BB is there a better way to handle the large uid? */ |
| if(local_ace->e_id == cpu_to_le32(-1)) { |
| /* Probably no need to le convert -1 on any arch but can not hurt */ |
| cifs_ace->cifs_uid = cpu_to_le64(-1); |
| } else |
| cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
| /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
| return rc; |
| } |
| |
| /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ |
| static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen, |
| const int acl_type) |
| { |
| __u16 rc = 0; |
| struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data; |
| posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL; |
| int count; |
| int i; |
| |
| if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
| return 0; |
| |
| count = posix_acl_xattr_count((size_t)buflen); |
| cFYI(1,("setting acl with %d entries from buf of length %d and version of %d", |
| count, buflen, le32_to_cpu(local_acl->a_version))); |
| if(le32_to_cpu(local_acl->a_version) != 2) { |
| cFYI(1,("unknown POSIX ACL version %d", |
| le32_to_cpu(local_acl->a_version))); |
| return 0; |
| } |
| cifs_acl->version = cpu_to_le16(1); |
| if(acl_type == ACL_TYPE_ACCESS) |
| cifs_acl->access_entry_count = cpu_to_le16(count); |
| else if(acl_type == ACL_TYPE_DEFAULT) |
| cifs_acl->default_entry_count = cpu_to_le16(count); |
| else { |
| cFYI(1,("unknown ACL type %d",acl_type)); |
| return 0; |
| } |
| for(i=0;i<count;i++) { |
| rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
| &local_acl->a_entries[i]); |
| if(rc != 0) { |
| /* ACE not converted */ |
| break; |
| } |
| } |
| if(rc == 0) { |
| rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
| rc += sizeof(struct cifs_posix_acl); |
| /* BB add check to make sure ACL does not overflow SMB */ |
| } |
| return rc; |
| } |
| |
| int |
| CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| char *acl_inf, const int buflen, const int acl_type, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| /* SMB_QUERY_POSIX_ACL */ |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); |
| |
| queryAclRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| pSMB->FileName[name_len] = 0; |
| pSMB->FileName[name_len+1] = 0; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| /* BB find exact max data count below from sess structure BB */ |
| pSMB->MaxDataCount = cpu_to_le16(4000); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16( |
| offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_acl_get); |
| if (rc) { |
| cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); |
| } else { |
| /* decode response */ |
| |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| if (rc || (pSMBr->ByteCount < 2)) |
| /* BB also check enough total bytes returned */ |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| __u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
| rc = cifs_copy_posix_acl(acl_inf, |
| (char *)&pSMBr->hdr.Protocol+data_offset, |
| buflen,acl_type,count); |
| } |
| } |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto queryAclRetry; |
| return rc; |
| } |
| |
| int |
| CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *fileName, |
| const char *local_acl, const int buflen, |
| const int acl_type, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| struct smb_com_transaction2_spi_req *pSMB = NULL; |
| struct smb_com_transaction2_spi_rsp *pSMBr = NULL; |
| char *parm_data; |
| int name_len; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count, data_count, param_offset, offset; |
| |
| cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); |
| setAclRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, fileName, name_len); |
| } |
| params = 6 + name_len; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| parm_data = ((char *) &pSMB->hdr.Protocol) + offset; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| |
| /* convert to on the wire format for POSIX ACL */ |
| data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type); |
| |
| if(data_count == 0) { |
| rc = -EOPNOTSUPP; |
| goto setACLerrorExit; |
| } |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); |
| byte_count = 3 /* pad */ + params + data_count; |
| pSMB->DataCount = cpu_to_le16(data_count); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Set POSIX ACL returned %d", rc)); |
| } |
| |
| setACLerrorExit: |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto setAclRetry; |
| return rc; |
| } |
| |
| /* BB fix tabs in this function FIXME BB */ |
| int |
| CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, |
| const int netfid, __u64 * pExtAttrBits, __u64 *pMask) |
| { |
| int rc = 0; |
| struct smb_t2_qfi_req *pSMB = NULL; |
| struct smb_t2_qfi_rsp *pSMBr = NULL; |
| int bytes_returned; |
| __u16 params, byte_count; |
| |
| cFYI(1,("In GetExtAttr")); |
| if(tcon == NULL) |
| return -ENODEV; |
| |
| GetExtAttrRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2 /* level */ +2 /* fid */; |
| pSMB->t2.TotalDataCount = 0; |
| pSMB->t2.MaxParameterCount = cpu_to_le16(4); |
| /* BB find exact max data count below from sess structure BB */ |
| pSMB->t2.MaxDataCount = cpu_to_le16(4000); |
| pSMB->t2.MaxSetupCount = 0; |
| pSMB->t2.Reserved = 0; |
| pSMB->t2.Flags = 0; |
| pSMB->t2.Timeout = 0; |
| pSMB->t2.Reserved2 = 0; |
| pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, |
| Fid) - 4); |
| pSMB->t2.DataCount = 0; |
| pSMB->t2.DataOffset = 0; |
| pSMB->t2.SetupCount = 1; |
| pSMB->t2.Reserved3 = 0; |
| pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->t2.TotalParameterCount = cpu_to_le16(params); |
| pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); |
| pSMB->Pad = 0; |
| pSMB->Fid = netfid; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("error %d in GetExtAttr", rc)); |
| } else { |
| /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| if (rc || (pSMBr->ByteCount < 2)) |
| /* BB also check enough total bytes returned */ |
| /* If rc should we check for EOPNOSUPP and |
| disable the srvino flag? or in caller? */ |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| __u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
| struct file_chattr_info * pfinfo; |
| /* BB Do we need a cast or hash here ? */ |
| if(count != 16) { |
| cFYI(1, ("Illegal size ret in GetExtAttr")); |
| rc = -EIO; |
| goto GetExtAttrOut; |
| } |
| pfinfo = (struct file_chattr_info *) |
| (data_offset + (char *) &pSMBr->hdr.Protocol); |
| *pExtAttrBits = le64_to_cpu(pfinfo->mode); |
| *pMask = le64_to_cpu(pfinfo->mask); |
| } |
| } |
| GetExtAttrOut: |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto GetExtAttrRetry; |
| return rc; |
| } |
| |
| |
| #endif /* CONFIG_POSIX */ |
| |
| |
| /* security id for everyone */ |
| const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}}; |
| /* group users */ |
| const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}}; |
| |
| /* Convert CIFS ACL to POSIX form */ |
| static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len) |
| { |
| return 0; |
| } |
| |
| /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
| int |
| CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, |
| /* BB fix up return info */ char *acl_inf, const int buflen, |
| const int acl_type /* ACCESS/DEFAULT not sure implication */) |
| { |
| int rc = 0; |
| int buf_type = 0; |
| QUERY_SEC_DESC_REQ * pSMB; |
| struct kvec iov[1]; |
| |
| cFYI(1, ("GetCifsACL")); |
| |
| rc = smb_init_ntransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
| 8 /* parm len */, tcon, (void **) &pSMB); |
| if (rc) |
| return rc; |
| |
| pSMB->MaxParameterCount = cpu_to_le32(4); |
| /* BB TEST with big acls that might need to be e.g. larger than 16K */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Fid = fid; /* file handle always le */ |
| pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | |
| CIFS_ACL_DACL); |
| pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ |
| pSMB->hdr.smb_buf_length += 11; |
| iov[0].iov_base = (char *)pSMB; |
| iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; |
| |
| rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, 0); |
| cifs_stats_inc(&tcon->num_acl_get); |
| if (rc) { |
| cFYI(1, ("Send error in QuerySecDesc = %d", rc)); |
| } else { /* decode response */ |
| struct cifs_sid * psec_desc; |
| __le32 * parm; |
| int parm_len; |
| int data_len; |
| int acl_len; |
| struct smb_com_ntransact_rsp * pSMBr; |
| |
| /* validate_nttransact */ |
| rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
| (char **)&psec_desc, |
| &parm_len, &data_len); |
| |
| if(rc) |
| goto qsec_out; |
| pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; |
| |
| cERROR(1,("smb %p parm %p data %p",pSMBr,parm,psec_desc)); /* BB removeme BB */ |
| |
| if (le32_to_cpu(pSMBr->ParameterCount) != 4) { |
| rc = -EIO; /* bad smb */ |
| goto qsec_out; |
| } |
| |
| /* BB check that data area is minimum length and as big as acl_len */ |
| |
| acl_len = le32_to_cpu(*(__le32 *)parm); |
| /* BB check if(acl_len > bufsize) */ |
| |
| parse_sec_desc(psec_desc, acl_len); |
| } |
| qsec_out: |
| if(buf_type == CIFS_SMALL_BUFFER) |
| cifs_small_buf_release(iov[0].iov_base); |
| else if(buf_type == CIFS_LARGE_BUFFER) |
| cifs_buf_release(iov[0].iov_base); |
| /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
| return rc; |
| } |
| |
| |
| /* Legacy Query Path Information call for lookup to old servers such |
| as Win9x/WinME */ |
| int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| FILE_ALL_INFO * pFinfo, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| QUERY_INFORMATION_REQ * pSMB; |
| QUERY_INFORMATION_RSP * pSMBr; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| |
| cFYI(1, ("In SMBQPath path %s", searchName)); |
| QInfRetry: |
| rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| pSMB->BufferFormat = 0x04; |
| name_len++; /* account for buffer type byte */ |
| pSMB->hdr.smb_buf_length += (__u16) name_len; |
| pSMB->ByteCount = cpu_to_le16(name_len); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QueryInfo = %d", rc)); |
| } else if (pFinfo) { /* decode response */ |
| memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
| pFinfo->AllocationSize = |
| cpu_to_le64(le32_to_cpu(pSMBr->size)); |
| pFinfo->EndOfFile = pFinfo->AllocationSize; |
| pFinfo->Attributes = |
| cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
| } else |
| rc = -EIO; /* bad buffer passed in */ |
| |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto QInfRetry; |
| |
| return rc; |
| } |
| |
| |
| |
| |
| int |
| CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| FILE_ALL_INFO * pFindData, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| __u16 params, byte_count; |
| |
| /* cFYI(1, ("In QPathInfo path %s", searchName)); */ |
| QPathInfoRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QPathInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 40)) |
| rc = -EIO; /* bad smb */ |
| else if (pFindData){ |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| memcpy((char *) pFindData, |
| (char *) &pSMBr->hdr.Protocol + |
| data_offset, sizeof (FILE_ALL_INFO)); |
| } else |
| rc = -ENOMEM; |
| } |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto QPathInfoRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| FILE_UNIX_BASIC_INFO * pFindData, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| /* SMB_QUERY_FILE_UNIX_BASIC */ |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned = 0; |
| int name_len; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); |
| UnixQPathInfoRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxDataCount = cpu_to_le16(4000); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QPathInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { |
| rc = -EIO; /* bad smb */ |
| } else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| memcpy((char *) pFindData, |
| (char *) &pSMBr->hdr.Protocol + |
| data_offset, |
| sizeof (FILE_UNIX_BASIC_INFO)); |
| } |
| } |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto UnixQPathInfoRetry; |
| |
| return rc; |
| } |
| |
| #if 0 /* function unused at present */ |
| int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon, |
| const char *searchName, FILE_ALL_INFO * findData, |
| const struct nls_table *nls_codepage) |
| { |
| /* level 257 SMB_ */ |
| TRANSACTION2_FFIRST_REQ *pSMB = NULL; |
| TRANSACTION2_FFIRST_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In FindUnique")); |
| findUniqueRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX |
| /* find define for this maxpathcomponent */ |
| , nls_codepage); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 12 + name_len /* includes null */ ; |
| pSMB->TotalDataCount = 0; /* no EAs */ |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16( |
| offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; /* one byte, no need to le convert */ |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->SearchAttributes = |
| cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
| ATTR_DIRECTORY); |
| pSMB->SearchCount = cpu_to_le16(16); /* BB increase */ |
| pSMB->SearchFlags = cpu_to_le16(1); |
| pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); |
| pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */ |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| |
| if (rc) { |
| cFYI(1, ("Send error in FindFileDirInfo = %d", rc)); |
| } else { /* decode response */ |
| cifs_stats_inc(&tcon->num_ffirst); |
| /* BB fill in */ |
| } |
| |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto findUniqueRetry; |
| |
| return rc; |
| } |
| #endif /* end unused (temporarily) function */ |
| |
| /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
| int |
| CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, |
| const char *searchName, |
| const struct nls_table *nls_codepage, |
| __u16 * pnetfid, |
| struct cifs_search_info * psrch_inf, int remap, const char dirsep) |
| { |
| /* level 257 SMB_ */ |
| TRANSACTION2_FFIRST_REQ *pSMB = NULL; |
| TRANSACTION2_FFIRST_RSP *pSMBr = NULL; |
| T2_FFIRST_RSP_PARMS * parms; |
| int rc = 0; |
| int bytes_returned = 0; |
| int name_len; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In FindFirst for %s",searchName)); |
| |
| findFirstRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName,searchName, |
| PATH_MAX, nls_codepage, remap); |
| /* We can not add the asterik earlier in case |
| it got remapped to 0xF03A as if it were part of the |
| directory name instead of a wildcard */ |
| name_len *= 2; |
| pSMB->FileName[name_len] = dirsep; |
| pSMB->FileName[name_len+1] = 0; |
| pSMB->FileName[name_len+2] = '*'; |
| pSMB->FileName[name_len+3] = 0; |
| name_len += 4; /* now the trailing null */ |
| pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
| pSMB->FileName[name_len+1] = 0; |
| name_len += 2; |
| } else { /* BB add check for overrun of SMB buf BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| /* BB fix here and in unicode clause above ie |
| if(name_len > buffersize-header) |
| free buffer exit; BB */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| pSMB->FileName[name_len] = dirsep; |
| pSMB->FileName[name_len+1] = '*'; |
| pSMB->FileName[name_len+2] = 0; |
| name_len += 3; |
| } |
| |
| params = 12 + name_len /* includes null */ ; |
| pSMB->TotalDataCount = 0; /* no EAs */ |
| pSMB->MaxParameterCount = cpu_to_le16(10); |
| pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - |
| MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16( |
| offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); |
| pSMB->SearchAttributes = |
| cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
| ATTR_DIRECTORY); |
| pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
| pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | |
| CIFS_SEARCH_RETURN_RESUME); |
| pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
| |
| /* BB what should we set StorageType to? Does it matter? BB */ |
| pSMB->SearchStorageType = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_ffirst); |
| |
| if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */ |
| /* BB Add code to handle unsupported level rc */ |
| cFYI(1, ("Error in FindFirst = %d", rc)); |
| |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| |
| /* BB eventually could optimize out free and realloc of buf */ |
| /* for this case */ |
| if (rc == -EAGAIN) |
| goto findFirstRetry; |
| } else { /* decode response */ |
| /* BB remember to free buffer if error BB */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| if(rc == 0) { |
| if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
| psrch_inf->unicode = TRUE; |
| else |
| psrch_inf->unicode = FALSE; |
| |
| psrch_inf->ntwrk_buf_start = (char *)pSMBr; |
| psrch_inf->smallBuf = 0; |
| psrch_inf->srch_entries_start = |
| (char *) &pSMBr->hdr.Protocol + |
| le16_to_cpu(pSMBr->t2.DataOffset); |
| parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
| le16_to_cpu(pSMBr->t2.ParameterOffset)); |
| |
| if(parms->EndofSearch) |
| psrch_inf->endOfSearch = TRUE; |
| else |
| psrch_inf->endOfSearch = FALSE; |
| |
| psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); |
| psrch_inf->index_of_last_entry = |
| psrch_inf->entries_in_buffer; |
| *pnetfid = parms->SearchHandle; |
| } else { |
| cifs_buf_release(pSMB); |
| } |
| } |
| |
| return rc; |
| } |
| |
| int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, |
| __u16 searchHandle, struct cifs_search_info * psrch_inf) |
| { |
| TRANSACTION2_FNEXT_REQ *pSMB = NULL; |
| TRANSACTION2_FNEXT_RSP *pSMBr = NULL; |
| T2_FNEXT_RSP_PARMS * parms; |
| char *response_data; |
| int rc = 0; |
| int bytes_returned, name_len; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In FindNext")); |
| |
| if(psrch_inf->endOfSearch == TRUE) |
| return -ENOENT; |
| |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 14; /* includes 2 bytes of null string, converted to LE below */ |
| byte_count = 0; |
| pSMB->TotalDataCount = 0; /* no EAs */ |
| pSMB->MaxParameterCount = cpu_to_le16(8); |
| pSMB->MaxDataCount = |
| cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16( |
| offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); |
| pSMB->SearchHandle = searchHandle; /* always kept as le */ |
| pSMB->SearchCount = |
| cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO)); |
| /* test for Unix extensions */ |
| /* if (tcon->ses->capabilities & CAP_UNIX) { |
| pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX); |
| psrch_inf->info_level = SMB_FIND_FILE_UNIX; |
| } else { |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); |
| psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO; |
| } */ |
| pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
| pSMB->ResumeKey = psrch_inf->resume_key; |
| pSMB->SearchFlags = |
| cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); |
| |
| name_len = psrch_inf->resume_name_len; |
| params += name_len; |
| if(name_len < PATH_MAX) { |
| memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
| byte_count += name_len; |
| /* 14 byte parm len above enough for 2 byte null terminator */ |
| pSMB->ResumeFileName[name_len] = 0; |
| pSMB->ResumeFileName[name_len+1] = 0; |
| } else { |
| rc = -EINVAL; |
| goto FNext2_err_exit; |
| } |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| cifs_stats_inc(&tcon->num_fnext); |
| if (rc) { |
| if (rc == -EBADF) { |
| psrch_inf->endOfSearch = TRUE; |
| rc = 0; /* search probably was closed at end of search above */ |
| } else |
| cFYI(1, ("FindNext returned = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if(rc == 0) { |
| /* BB fixme add lock for file (srch_info) struct here */ |
| if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
| psrch_inf->unicode = TRUE; |
| else |
| psrch_inf->unicode = FALSE; |
| response_data = (char *) &pSMBr->hdr.Protocol + |
| le16_to_cpu(pSMBr->t2.ParameterOffset); |
| parms = (T2_FNEXT_RSP_PARMS *)response_data; |
| response_data = (char *)&pSMBr->hdr.Protocol + |
| le16_to_cpu(pSMBr->t2.DataOffset); |
| if(psrch_inf->smallBuf) |
| cifs_small_buf_release( |
| psrch_inf->ntwrk_buf_start); |
| else |
| cifs_buf_release(psrch_inf->ntwrk_buf_start); |
| psrch_inf->srch_entries_start = response_data; |
| psrch_inf->ntwrk_buf_start = (char *)pSMB; |
| psrch_inf->smallBuf = 0; |
| if(parms->EndofSearch) |
| psrch_inf->endOfSearch = TRUE; |
| else |
| psrch_inf->endOfSearch = FALSE; |
| |
| psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); |
| psrch_inf->index_of_last_entry += |
| psrch_inf->entries_in_buffer; |
| /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */ |
| |
| /* BB fixme add unlock here */ |
| } |
| |
| } |
| |
| /* BB On error, should we leave previous search buf (and count and |
| last entry fields) intact or free the previous one? */ |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| FNext2_err_exit: |
| if (rc != 0) |
| cifs_buf_release(pSMB); |
| |
| return rc; |
| } |
| |
| int |
| CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle) |
| { |
| int rc = 0; |
| FINDCLOSE_REQ *pSMB = NULL; |
| CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */ |
| int bytes_returned; |
| |
| cFYI(1, ("In CIFSSMBFindClose")); |
| rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
| |
| /* no sense returning error if session restarted |
| as file handle has been closed */ |
| if(rc == -EAGAIN) |
| return 0; |
| if (rc) |
| return rc; |
| |
| pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ |
| pSMB->FileID = searchHandle; |
| pSMB->ByteCount = 0; |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cERROR(1, ("Send error in FindClose = %d", rc)); |
| } |
| cifs_stats_inc(&tcon->num_fclose); |
| cifs_small_buf_release(pSMB); |
| |
| /* Since session is dead, search handle closed on server already */ |
| if (rc == -EAGAIN) |
| rc = 0; |
| |
| return rc; |
| } |
| |
| int |
| CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| __u64 * inode_number, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc = 0; |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int name_len, bytes_returned; |
| __u16 params, byte_count; |
| |
| cFYI(1,("In GetSrvInodeNum for %s",searchName)); |
| if(tcon == NULL) |
| return -ENODEV; |
| |
| GetInodeNumberRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX,nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| /* BB find exact max data count below from sess structure BB */ |
| pSMB->MaxDataCount = cpu_to_le16(4000); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("error %d in QueryInternalInfo", rc)); |
| } else { |
| /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| if (rc || (pSMBr->ByteCount < 2)) |
| /* BB also check enough total bytes returned */ |
| /* If rc should we check for EOPNOSUPP and |
| disable the srvino flag? or in caller? */ |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| __u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
| struct file_internal_info * pfinfo; |
| /* BB Do we need a cast or hash here ? */ |
| if(count < 8) { |
| cFYI(1, ("Illegal size ret in QryIntrnlInf")); |
| rc = -EIO; |
| goto GetInodeNumOut; |
| } |
| pfinfo = (struct file_internal_info *) |
| (data_offset + (char *) &pSMBr->hdr.Protocol); |
| *inode_number = pfinfo->UniqueId; |
| } |
| } |
| GetInodeNumOut: |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto GetInodeNumberRetry; |
| return rc; |
| } |
| |
| int |
| CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, |
| const unsigned char *searchName, |
| unsigned char **targetUNCs, |
| unsigned int *number_of_UNC_in_array, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| /* TRANS2_GET_DFS_REFERRAL */ |
| TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; |
| TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; |
| struct dfs_referral_level_3 * referrals = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| unsigned int i; |
| char * temp; |
| __u16 params, byte_count; |
| *number_of_UNC_in_array = 0; |
| *targetUNCs = NULL; |
| |
| cFYI(1, ("In GetDFSRefer the path %s", searchName)); |
| if (ses == NULL) |
| return -ENODEV; |
| getDFSRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| /* server pointer checked in called function, |
| but should never be null here anyway */ |
| pSMB->hdr.Mid = GetNextMid(ses->server); |
| pSMB->hdr.Tid = ses->ipc_tid; |
| pSMB->hdr.Uid = ses->Suid; |
| if (ses->capabilities & CAP_STATUS32) { |
| pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
| } |
| if (ses->capabilities & CAP_DFS) { |
| pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
| } |
| |
| if (ses->capabilities & CAP_UNICODE) { |
| pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
| searchName, PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->RequestFileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + name_len /*includes null */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->MaxParameterCount = 0; |
| pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); |
| byte_count = params + 3 /* pad */ ; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->MaxReferralLevel = cpu_to_le16(3); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in GetDFSRefer = %d", rc)); |
| } else { /* decode response */ |
| /* BB Add logic to parse referrals here */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */ |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); |
| |
| cFYI(1, |
| ("Decoding GetDFSRefer response. BCC: %d Offset %d", |
| pSMBr->ByteCount, data_offset)); |
| referrals = |
| (struct dfs_referral_level_3 *) |
| (8 /* sizeof start of data block */ + |
| data_offset + |
| (char *) &pSMBr->hdr.Protocol); |
| cFYI(1,("num_referrals: %d dfs flags: 0x%x ... \nfor referral one refer size: 0x%x srv type: 0x%x refer flags: 0x%x ttl: 0x%x", |
| le16_to_cpu(pSMBr->NumberOfReferrals),le16_to_cpu(pSMBr->DFSFlags), le16_to_cpu(referrals->ReferralSize),le16_to_cpu(referrals->ServerType),le16_to_cpu(referrals->ReferralFlags),le16_to_cpu(referrals->TimeToLive))); |
| /* BB This field is actually two bytes in from start of |
| data block so we could do safety check that DataBlock |
| begins at address of pSMBr->NumberOfReferrals */ |
| *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals); |
| |
| /* BB Fix below so can return more than one referral */ |
| if(*number_of_UNC_in_array > 1) |
| *number_of_UNC_in_array = 1; |
| |
| /* get the length of the strings describing refs */ |
| name_len = 0; |
| for(i=0;i<*number_of_UNC_in_array;i++) { |
| /* make sure that DfsPathOffset not past end */ |
| __u16 offset = le16_to_cpu(referrals->DfsPathOffset); |
| if (offset > data_count) { |
| /* if invalid referral, stop here and do |
| not try to copy any more */ |
| *number_of_UNC_in_array = i; |
| break; |
| } |
| temp = ((char *)referrals) + offset; |
| |
| if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len += UniStrnlen((wchar_t *)temp,data_count); |
| } else { |
| name_len += strnlen(temp,data_count); |
| } |
| referrals++; |
| /* BB add check that referral pointer does not fall off end PDU */ |
| |
| } |
| /* BB add check for name_len bigger than bcc */ |
| *targetUNCs = |
| kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL); |
| if(*targetUNCs == NULL) { |
| rc = -ENOMEM; |
| goto GetDFSRefExit; |
| } |
| /* copy the ref strings */ |
| referrals = |
| (struct dfs_referral_level_3 *) |
| (8 /* sizeof data hdr */ + |
| data_offset + |
| (char *) &pSMBr->hdr.Protocol); |
| |
| for(i=0;i<*number_of_UNC_in_array;i++) { |
| temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset); |
| if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
| cifs_strfromUCS_le(*targetUNCs, |
| (__le16 *) temp, name_len, nls_codepage); |
| } else { |
| strncpy(*targetUNCs,temp,name_len); |
| } |
| /* BB update target_uncs pointers */ |
| referrals++; |
| } |
| temp = *targetUNCs; |
| temp[name_len] = 0; |
| } |
| |
| } |
| GetDFSRefExit: |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto getDFSRetry; |
| |
| return rc; |
| } |
| |
| /* Query File System Info such as free space to old servers such as Win 9x */ |
| int |
| SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
| { |
| /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ |
| TRANSACTION2_QFSI_REQ *pSMB = NULL; |
| TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
| FILE_SYSTEM_ALLOC_INFO *response_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("OldQFSInfo")); |
| oldQFSInfoRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2; /* level */ |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QFSInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 18)) |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| cFYI(1,("qfsinf resp BCC: %d Offset %d", |
| pSMBr->ByteCount, data_offset)); |
| |
| response_data = |
| (FILE_SYSTEM_ALLOC_INFO *) |
| (((char *) &pSMBr->hdr.Protocol) + data_offset); |
| FSData->f_bsize = |
| le16_to_cpu(response_data->BytesPerSector) * |
| le32_to_cpu(response_data-> |
| SectorsPerAllocationUnit); |
| FSData->f_blocks = |
| le32_to_cpu(response_data->TotalAllocationUnits); |
| FSData->f_bfree = FSData->f_bavail = |
| le32_to_cpu(response_data->FreeAllocationUnits); |
| cFYI(1, |
| ("Blocks: %lld Free: %lld Block size %ld", |
| (unsigned long long)FSData->f_blocks, |
| (unsigned long long)FSData->f_bfree, |
| FSData->f_bsize)); |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto oldQFSInfoRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
| { |
| /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ |
| TRANSACTION2_QFSI_REQ *pSMB = NULL; |
| TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
| FILE_SYSTEM_INFO *response_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QFSInfo")); |
| QFSInfoRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2; /* level */ |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QFSInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 24)) |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| |
| response_data = |
| (FILE_SYSTEM_INFO |
| *) (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| FSData->f_bsize = |
| le32_to_cpu(response_data->BytesPerSector) * |
| le32_to_cpu(response_data-> |
| SectorsPerAllocationUnit); |
| FSData->f_blocks = |
| le64_to_cpu(response_data->TotalAllocationUnits); |
| FSData->f_bfree = FSData->f_bavail = |
| le64_to_cpu(response_data->FreeAllocationUnits); |
| cFYI(1, |
| ("Blocks: %lld Free: %lld Block size %ld", |
| (unsigned long long)FSData->f_blocks, |
| (unsigned long long)FSData->f_bfree, |
| FSData->f_bsize)); |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto QFSInfoRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
| { |
| /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ |
| TRANSACTION2_QFSI_REQ *pSMB = NULL; |
| TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
| FILE_SYSTEM_ATTRIBUTE_INFO *response_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QFSAttributeInfo")); |
| QFSAttributeRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2; /* level */ |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */ |
| rc = -EIO; /* bad smb */ |
| } else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| response_data = |
| (FILE_SYSTEM_ATTRIBUTE_INFO |
| *) (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| memcpy(&tcon->fsAttrInfo, response_data, |
| sizeof (FILE_SYSTEM_ATTRIBUTE_INFO)); |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto QFSAttributeRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
| { |
| /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ |
| TRANSACTION2_QFSI_REQ *pSMB = NULL; |
| TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
| FILE_SYSTEM_DEVICE_INFO *response_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QFSDeviceInfo")); |
| QFSDeviceRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2; /* level */ |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
| |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO))) |
| rc = -EIO; /* bad smb */ |
| else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| response_data = |
| (FILE_SYSTEM_DEVICE_INFO *) |
| (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| memcpy(&tcon->fsDevInfo, response_data, |
| sizeof (FILE_SYSTEM_DEVICE_INFO)); |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto QFSDeviceRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
| { |
| /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ |
| TRANSACTION2_QFSI_REQ *pSMB = NULL; |
| TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
| FILE_SYSTEM_UNIX_INFO *response_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QFSUnixInfo")); |
| QFSUnixRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2; /* level */ |
| pSMB->TotalDataCount = 0; |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
| smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 13)) { |
| rc = -EIO; /* bad smb */ |
| } else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| response_data = |
| (FILE_SYSTEM_UNIX_INFO |
| *) (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| memcpy(&tcon->fsUnixInfo, response_data, |
| sizeof (FILE_SYSTEM_UNIX_INFO)); |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto QFSUnixRetry; |
| |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
| { |
| /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ |
| TRANSACTION2_SETFSI_REQ *pSMB = NULL; |
| TRANSACTION2_SETFSI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, offset, byte_count; |
| |
| cFYI(1, ("In SETFSUnixInfo")); |
| SETFSUnixRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 4; /* 2 bytes zero followed by info level. */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4; |
| offset = param_offset + params; |
| |
| pSMB->MaxParameterCount = cpu_to_le16(4); |
| pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); |
| byte_count = 1 /* pad */ + params + 12; |
| |
| pSMB->DataCount = cpu_to_le16(12); |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| |
| /* Params. */ |
| pSMB->FileNum = 0; |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); |
| |
| /* Data. */ |
| pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); |
| pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); |
| pSMB->ClientUnixCap = cpu_to_le64(cap); |
| |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| if (rc) { |
| rc = -EIO; /* bad smb */ |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto SETFSUnixRetry; |
| |
| return rc; |
| } |
| |
| |
| |
| int |
| CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, |
| struct kstatfs *FSData) |
| { |
| /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ |
| TRANSACTION2_QFSI_REQ *pSMB = NULL; |
| TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
| FILE_SYSTEM_POSIX_INFO *response_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In QFSPosixInfo")); |
| QFSPosixRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| params = 2; /* level */ |
| pSMB->TotalDataCount = 0; |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| byte_count = params + 1 /* pad */ ; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
| smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
| pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| if (rc || (pSMBr->ByteCount < 13)) { |
| rc = -EIO; /* bad smb */ |
| } else { |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| response_data = |
| (FILE_SYSTEM_POSIX_INFO |
| *) (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| FSData->f_bsize = |
| le32_to_cpu(response_data->BlockSize); |
| FSData->f_blocks = |
| le64_to_cpu(response_data->TotalBlocks); |
| FSData->f_bfree = |
| le64_to_cpu(response_data->BlocksAvail); |
| if(response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
| FSData->f_bavail = FSData->f_bfree; |
| } else { |
| FSData->f_bavail = |
| le64_to_cpu(response_data->UserBlocksAvail); |
| } |
| if(response_data->TotalFileNodes != cpu_to_le64(-1)) |
| FSData->f_files = |
| le64_to_cpu(response_data->TotalFileNodes); |
| if(response_data->FreeFileNodes != cpu_to_le64(-1)) |
| FSData->f_ffree = |
| le64_to_cpu(response_data->FreeFileNodes); |
| } |
| } |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto QFSPosixRetry; |
| |
| return rc; |
| } |
| |
| |
| /* We can not use write of zero bytes trick to |
| set file size due to need for large file support. Also note that |
| this SetPathInfo is preferred to SetFileInfo based method in next |
| routine which is only needed to work around a sharing violation bug |
| in Samba which this routine can run into */ |
| |
| int |
| CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
| __u64 size, int SetAllocation, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| struct smb_com_transaction2_spi_req *pSMB = NULL; |
| struct smb_com_transaction2_spi_rsp *pSMBr = NULL; |
| struct file_end_of_file_info *parm_data; |
| int name_len; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, byte_count, data_count, param_offset, offset; |
| |
| cFYI(1, ("In SetEOF")); |
| SetEOFRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, fileName, name_len); |
| } |
| params = 6 + name_len; |
| data_count = sizeof (struct file_end_of_file_info); |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(4100); |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| if(SetAllocation) { |
| if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); |
| else |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); |
| } else /* Set File Size */ { |
| if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
| else |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
| } |
| |
| parm_data = |
| (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + |
| offset); |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| byte_count = 3 /* pad */ + params + data_count; |
| pSMB->DataCount = cpu_to_le16(data_count); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| parm_data->FileSize = cpu_to_le64(size); |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("SetPathInfo (file size) returned %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto SetEOFRetry; |
| |
| return rc; |
| } |
| |
| int |
| CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
| __u16 fid, __u32 pid_of_opener, int SetAllocation) |
| { |
| struct smb_com_transaction2_sfi_req *pSMB = NULL; |
| struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
| char *data_offset; |
| struct file_end_of_file_info *parm_data; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, offset, byte_count, count; |
| |
| cFYI(1, ("SetFileSize (via SetFileInfo) %lld", |
| (long long)size)); |
| rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
| |
| if (rc) |
| return rc; |
| |
| pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
| |
| pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
| pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); |
| |
| params = 6; |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
| offset = param_offset + params; |
| |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| |
| count = sizeof(struct file_end_of_file_info); |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
| byte_count = 3 /* pad */ + params + count; |
| pSMB->DataCount = cpu_to_le16(count); |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| parm_data = |
| (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + |
| offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| parm_data->FileSize = cpu_to_le64(size); |
| pSMB->Fid = fid; |
| if(SetAllocation) { |
| if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); |
| else |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); |
| } else /* Set File Size */ { |
| if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
| else |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
| } |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, |
| ("Send error in SetFileInfo (SetFileSize) = %d", |
| rc)); |
| } |
| |
| if (pSMB) |
| cifs_small_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| /* Some legacy servers such as NT4 require that the file times be set on |
| an open handle, rather than by pathname - this is awkward due to |
| potential access conflicts on the open, but it is unavoidable for these |
| old servers since the only other choice is to go from 100 nanosecond DCE |
| time and resort to the original setpathinfo level which takes the ancient |
| DOS time format with 2 second granularity */ |
| int |
| CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data, |
| __u16 fid) |
| { |
| struct smb_com_transaction2_sfi_req *pSMB = NULL; |
| struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
| char *data_offset; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, offset, byte_count, count; |
| |
| cFYI(1, ("Set Times (via SetFileInfo)")); |
| rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
| |
| if (rc) |
| return rc; |
| |
| pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
| |
| /* At this point there is no need to override the current pid |
| with the pid of the opener, but that could change if we someday |
| use an existing handle (rather than opening one on the fly) */ |
| /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
| pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/ |
| |
| params = 6; |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
| offset = param_offset + params; |
| |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| |
| count = sizeof (FILE_BASIC_INFO); |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
| byte_count = 3 /* pad */ + params + count; |
| pSMB->DataCount = cpu_to_le16(count); |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->Fid = fid; |
| if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); |
| else |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| memcpy(data_offset,data,sizeof(FILE_BASIC_INFO)); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc)); |
| } |
| |
| cifs_small_buf_release(pSMB); |
| |
| /* Note: On -EAGAIN error only caller can retry on handle based calls |
| since file handle passed in no longer valid */ |
| |
| return rc; |
| } |
| |
| |
| int |
| CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
| const FILE_BASIC_INFO * data, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| TRANSACTION2_SPI_REQ *pSMB = NULL; |
| TRANSACTION2_SPI_RSP *pSMBr = NULL; |
| int name_len; |
| int rc = 0; |
| int bytes_returned = 0; |
| char *data_offset; |
| __u16 params, param_offset, offset, byte_count, count; |
| |
| cFYI(1, ("In SetTimes")); |
| |
| SetTimesRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, fileName, name_len); |
| } |
| |
| params = 6 + name_len; |
| count = sizeof (FILE_BASIC_INFO); |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| byte_count = 3 /* pad */ + params + count; |
| |
| pSMB->DataCount = cpu_to_le16(count); |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); |
| else |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| memcpy(data_offset, data, sizeof (FILE_BASIC_INFO)); |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("SetPathInfo (times) returned %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto SetTimesRetry; |
| |
| return rc; |
| } |
| |
| /* Can not be used to set time stamps yet (due to old DOS time format) */ |
| /* Can be used to set attributes */ |
| #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug |
| handling it anyway and NT4 was what we thought it would be needed for |
| Do not delete it until we prove whether needed for Win9x though */ |
| int |
| CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, |
| __u16 dos_attrs, const struct nls_table *nls_codepage) |
| { |
| SETATTR_REQ *pSMB = NULL; |
| SETATTR_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| |
| cFYI(1, ("In SetAttrLegacy")); |
| |
| SetAttrLgcyRetry: |
| rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
| PATH_MAX, nls_codepage); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->fileName, fileName, name_len); |
| } |
| pSMB->attr = cpu_to_le16(dos_attrs); |
| pSMB->BufferFormat = 0x04; |
| pSMB->hdr.smb_buf_length += name_len + 1; |
| pSMB->ByteCount = cpu_to_le16(name_len + 1); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Error in LegacySetAttr = %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto SetAttrLgcyRetry; |
| |
| return rc; |
| } |
| #endif /* temporarily unneeded SetAttr legacy function */ |
| |
| int |
| CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon, |
| char *fileName, __u64 mode, __u64 uid, __u64 gid, |
| dev_t device, const struct nls_table *nls_codepage, |
| int remap) |
| { |
| TRANSACTION2_SPI_REQ *pSMB = NULL; |
| TRANSACTION2_SPI_RSP *pSMBr = NULL; |
| int name_len; |
| int rc = 0; |
| int bytes_returned = 0; |
| FILE_UNIX_BASIC_INFO *data_offset; |
| __u16 params, param_offset, offset, count, byte_count; |
| |
| cFYI(1, ("In SetUID/GID/Mode")); |
| setPermsRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, fileName, name_len); |
| } |
| |
| params = 6 + name_len; |
| count = sizeof (FILE_UNIX_BASIC_INFO); |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| data_offset = |
| (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + |
| offset); |
| memset(data_offset, 0, count); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| byte_count = 3 /* pad */ + params + count; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->DataCount = cpu_to_le16(count); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| data_offset->Uid = cpu_to_le64(uid); |
| data_offset->Gid = cpu_to_le64(gid); |
| /* better to leave device as zero when it is */ |
| data_offset->DevMajor = cpu_to_le64(MAJOR(device)); |
| data_offset->DevMinor = cpu_to_le64(MINOR(device)); |
| data_offset->Permissions = cpu_to_le64(mode); |
| |
| if(S_ISREG(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_FILE); |
| else if(S_ISDIR(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_DIR); |
| else if(S_ISLNK(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_SYMLINK); |
| else if(S_ISCHR(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_CHARDEV); |
| else if(S_ISBLK(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); |
| else if(S_ISFIFO(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_FIFO); |
| else if(S_ISSOCK(mode)) |
| data_offset->Type = cpu_to_le32(UNIX_SOCKET); |
| |
| |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("SetPathInfo (perms) returned %d", rc)); |
| } |
| |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto setPermsRetry; |
| return rc; |
| } |
| |
| int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
| const int notify_subdirs, const __u16 netfid, |
| __u32 filter, struct file * pfile, int multishot, |
| const struct nls_table *nls_codepage) |
| { |
| int rc = 0; |
| struct smb_com_transaction_change_notify_req * pSMB = NULL; |
| struct smb_com_ntransaction_change_notify_rsp * pSMBr = NULL; |
| struct dir_notify_req *dnotify_req; |
| int bytes_returned; |
| |
| cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid)); |
| rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| pSMB->TotalParameterCount = 0 ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le32(2); |
| /* BB find exact data count max from sess structure BB */ |
| pSMB->MaxDataCount = 0; /* same in little endian or be */ |
| /* BB VERIFY verify which is correct for above BB */ |
| pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
| MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); |
| |
| pSMB->MaxSetupCount = 4; |
| pSMB->Reserved = 0; |
| pSMB->ParameterOffset = 0; |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 4; /* single byte does not need le conversion */ |
| pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| if(notify_subdirs) |
| pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
| pSMB->Reserved2 = 0; |
| pSMB->CompletionFilter = cpu_to_le32(filter); |
| pSMB->Fid = netfid; /* file handle always le */ |
| pSMB->ByteCount = 0; |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, -1); |
| if (rc) { |
| cFYI(1, ("Error in Notify = %d", rc)); |
| } else { |
| /* Add file to outstanding requests */ |
| /* BB change to kmem cache alloc */ |
| dnotify_req = (struct dir_notify_req *) kmalloc( |
| sizeof(struct dir_notify_req), |
| GFP_KERNEL); |
| if(dnotify_req) { |
| dnotify_req->Pid = pSMB->hdr.Pid; |
| dnotify_req->PidHigh = pSMB->hdr.PidHigh; |
| dnotify_req->Mid = pSMB->hdr.Mid; |
| dnotify_req->Tid = pSMB->hdr.Tid; |
| dnotify_req->Uid = pSMB->hdr.Uid; |
| dnotify_req->netfid = netfid; |
| dnotify_req->pfile = pfile; |
| dnotify_req->filter = filter; |
| dnotify_req->multishot = multishot; |
| spin_lock(&GlobalMid_Lock); |
| list_add_tail(&dnotify_req->lhead, |
| &GlobalDnotifyReqList); |
| spin_unlock(&GlobalMid_Lock); |
| } else |
| rc = -ENOMEM; |
| } |
| cifs_buf_release(pSMB); |
| return rc; |
| } |
| #ifdef CONFIG_CIFS_XATTR |
| ssize_t |
| CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, |
| const unsigned char *searchName, |
| char * EAData, size_t buf_size, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| /* BB assumes one setup word */ |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| struct fea * temp_fea; |
| char * temp_ptr; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In Query All EAs path %s", searchName)); |
| QAllEAsRetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in QueryAllEAs = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| /* BB also check enough total bytes returned */ |
| /* BB we need to improve the validity checking |
| of these trans2 responses */ |
| if (rc || (pSMBr->ByteCount < 4)) |
| rc = -EIO; /* bad smb */ |
| /* else if (pFindData){ |
| memcpy((char *) pFindData, |
| (char *) &pSMBr->hdr.Protocol + |
| data_offset, kl); |
| }*/ else { |
| /* check that length of list is not more than bcc */ |
| /* check that each entry does not go beyond length |
| of list */ |
| /* check that each element of each entry does not |
| go beyond end of list */ |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| struct fealist * ea_response_data; |
| rc = 0; |
| /* validate_trans2_offsets() */ |
| /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/ |
| ea_response_data = (struct fealist *) |
| (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| name_len = le32_to_cpu(ea_response_data->list_len); |
| cFYI(1,("ea length %d", name_len)); |
| if(name_len <= 8) { |
| /* returned EA size zeroed at top of function */ |
| cFYI(1,("empty EA list returned from server")); |
| } else { |
| /* account for ea list len */ |
| name_len -= 4; |
| temp_fea = ea_response_data->list; |
| temp_ptr = (char *)temp_fea; |
| while(name_len > 0) { |
| __u16 value_len; |
| name_len -= 4; |
| temp_ptr += 4; |
| rc += temp_fea->name_len; |
| /* account for prefix user. and trailing null */ |
| rc = rc + 5 + 1; |
| if(rc<(int)buf_size) { |
| memcpy(EAData,"user.",5); |
| EAData+=5; |
| memcpy(EAData,temp_ptr,temp_fea->name_len); |
| EAData+=temp_fea->name_len; |
| /* null terminate name */ |
| *EAData = 0; |
| EAData = EAData + 1; |
| } else if(buf_size == 0) { |
| /* skip copy - calc size only */ |
| } else { |
| /* stop before overrun buffer */ |
| rc = -ERANGE; |
| break; |
| } |
| name_len -= temp_fea->name_len; |
| temp_ptr += temp_fea->name_len; |
| /* account for trailing null */ |
| name_len--; |
| temp_ptr++; |
| value_len = le16_to_cpu(temp_fea->value_len); |
| name_len -= value_len; |
| temp_ptr += value_len; |
| /* BB check that temp_ptr is still within smb BB*/ |
| /* no trailing null to account for in value len */ |
| /* go on to next EA */ |
| temp_fea = (struct fea *)temp_ptr; |
| } |
| } |
| } |
| } |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto QAllEAsRetry; |
| |
| return (ssize_t)rc; |
| } |
| |
| ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon, |
| const unsigned char * searchName,const unsigned char * ea_name, |
| unsigned char * ea_value, size_t buf_size, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| TRANSACTION2_QPI_REQ *pSMB = NULL; |
| TRANSACTION2_QPI_RSP *pSMBr = NULL; |
| int rc = 0; |
| int bytes_returned; |
| int name_len; |
| struct fea * temp_fea; |
| char * temp_ptr; |
| __u16 params, byte_count; |
| |
| cFYI(1, ("In Query EA path %s", searchName)); |
| QEARetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(searchName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, searchName, name_len); |
| } |
| |
| params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; |
| pSMB->TotalDataCount = 0; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| pSMB->ParameterOffset = cpu_to_le16(offsetof( |
| struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); |
| pSMB->DataCount = 0; |
| pSMB->DataOffset = 0; |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
| byte_count = params + 1 /* pad */ ; |
| pSMB->TotalParameterCount = cpu_to_le16(params); |
| pSMB->ParameterCount = pSMB->TotalParameterCount; |
| pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("Send error in Query EA = %d", rc)); |
| } else { /* decode response */ |
| rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
| |
| /* BB also check enough total bytes returned */ |
| /* BB we need to improve the validity checking |
| of these trans2 responses */ |
| if (rc || (pSMBr->ByteCount < 4)) |
| rc = -EIO; /* bad smb */ |
| /* else if (pFindData){ |
| memcpy((char *) pFindData, |
| (char *) &pSMBr->hdr.Protocol + |
| data_offset, kl); |
| }*/ else { |
| /* check that length of list is not more than bcc */ |
| /* check that each entry does not go beyond length |
| of list */ |
| /* check that each element of each entry does not |
| go beyond end of list */ |
| __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
| struct fealist * ea_response_data; |
| rc = -ENODATA; |
| /* validate_trans2_offsets() */ |
| /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/ |
| ea_response_data = (struct fealist *) |
| (((char *) &pSMBr->hdr.Protocol) + |
| data_offset); |
| name_len = le32_to_cpu(ea_response_data->list_len); |
| cFYI(1,("ea length %d", name_len)); |
| if(name_len <= 8) { |
| /* returned EA size zeroed at top of function */ |
| cFYI(1,("empty EA list returned from server")); |
| } else { |
| /* account for ea list len */ |
| name_len -= 4; |
| temp_fea = ea_response_data->list; |
| temp_ptr = (char *)temp_fea; |
| /* loop through checking if we have a matching |
| name and then return the associated value */ |
| while(name_len > 0) { |
| __u16 value_len; |
| name_len -= 4; |
| temp_ptr += 4; |
| value_len = le16_to_cpu(temp_fea->value_len); |
| /* BB validate that value_len falls within SMB, |
| even though maximum for name_len is 255 */ |
| if(memcmp(temp_fea->name,ea_name, |
| temp_fea->name_len) == 0) { |
| /* found a match */ |
| rc = value_len; |
| /* account for prefix user. and trailing null */ |
| if(rc<=(int)buf_size) { |
| memcpy(ea_value, |
| temp_fea->name+temp_fea->name_len+1, |
| rc); |
| /* ea values, unlike ea names, |
| are not null terminated */ |
| } else if(buf_size == 0) { |
| /* skip copy - calc size only */ |
| } else { |
| /* stop before overrun buffer */ |
| rc = -ERANGE; |
| } |
| break; |
| } |
| name_len -= temp_fea->name_len; |
| temp_ptr += temp_fea->name_len; |
| /* account for trailing null */ |
| name_len--; |
| temp_ptr++; |
| name_len -= value_len; |
| temp_ptr += value_len; |
| /* no trailing null to account for in value len */ |
| /* go on to next EA */ |
| temp_fea = (struct fea *)temp_ptr; |
| } |
| } |
| } |
| } |
| if (pSMB) |
| cifs_buf_release(pSMB); |
| if (rc == -EAGAIN) |
| goto QEARetry; |
| |
| return (ssize_t)rc; |
| } |
| |
| int |
| CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
| const char * ea_name, const void * ea_value, |
| const __u16 ea_value_len, const struct nls_table *nls_codepage, |
| int remap) |
| { |
| struct smb_com_transaction2_spi_req *pSMB = NULL; |
| struct smb_com_transaction2_spi_rsp *pSMBr = NULL; |
| struct fealist *parm_data; |
| int name_len; |
| int rc = 0; |
| int bytes_returned = 0; |
| __u16 params, param_offset, byte_count, offset, count; |
| |
| cFYI(1, ("In SetEA")); |
| SetEARetry: |
| rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
| (void **) &pSMBr); |
| if (rc) |
| return rc; |
| |
| if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
| name_len = |
| cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
| PATH_MAX, nls_codepage, remap); |
| name_len++; /* trailing null */ |
| name_len *= 2; |
| } else { /* BB improve the check for buffer overruns BB */ |
| name_len = strnlen(fileName, PATH_MAX); |
| name_len++; /* trailing null */ |
| strncpy(pSMB->FileName, fileName, name_len); |
| } |
| |
| params = 6 + name_len; |
| |
| /* done calculating parms using name_len of file name, |
| now use name_len to calculate length of ea name |
| we are going to create in the inode xattrs */ |
| if(ea_name == NULL) |
| name_len = 0; |
| else |
| name_len = strnlen(ea_name,255); |
| |
| count = sizeof(*parm_data) + ea_value_len + name_len + 1; |
| pSMB->MaxParameterCount = cpu_to_le16(2); |
| pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ |
| pSMB->MaxSetupCount = 0; |
| pSMB->Reserved = 0; |
| pSMB->Flags = 0; |
| pSMB->Timeout = 0; |
| pSMB->Reserved2 = 0; |
| param_offset = offsetof(struct smb_com_transaction2_spi_req, |
| InformationLevel) - 4; |
| offset = param_offset + params; |
| pSMB->InformationLevel = |
| cpu_to_le16(SMB_SET_FILE_EA); |
| |
| parm_data = |
| (struct fealist *) (((char *) &pSMB->hdr.Protocol) + |
| offset); |
| pSMB->ParameterOffset = cpu_to_le16(param_offset); |
| pSMB->DataOffset = cpu_to_le16(offset); |
| pSMB->SetupCount = 1; |
| pSMB->Reserved3 = 0; |
| pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
| byte_count = 3 /* pad */ + params + count; |
| pSMB->DataCount = cpu_to_le16(count); |
| parm_data->list_len = cpu_to_le32(count); |
| parm_data->list[0].EA_flags = 0; |
| /* we checked above that name len is less than 255 */ |
| parm_data->list[0].name_len = (__u8)name_len;; |
| /* EA names are always ASCII */ |
| if(ea_name) |
| strncpy(parm_data->list[0].name,ea_name,name_len); |
| parm_data->list[0].name[name_len] = 0; |
| parm_data->list[0].value_len = cpu_to_le16(ea_value_len); |
| /* caller ensures that ea_value_len is less than 64K but |
| we need to ensure that it fits within the smb */ |
| |
| /*BB add length check that it would fit in negotiated SMB buffer size BB */ |
| /* if(ea_value_len > buffer_size - 512 (enough for header)) */ |
| if(ea_value_len) |
| memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len); |
| |
| pSMB->TotalDataCount = pSMB->DataCount; |
| pSMB->ParameterCount = cpu_to_le16(params); |
| pSMB->TotalParameterCount = pSMB->ParameterCount; |
| pSMB->Reserved4 = 0; |
| pSMB->hdr.smb_buf_length += byte_count; |
| pSMB->ByteCount = cpu_to_le16(byte_count); |
| rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
| (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
| if (rc) { |
| cFYI(1, ("SetPathInfo (EA) returned %d", rc)); |
| } |
| |
| cifs_buf_release(pSMB); |
| |
| if (rc == -EAGAIN) |
| goto SetEARetry; |
| |
| return rc; |
| } |
| |
| #endif |
