| /* |
| * fs/cifs/connect.c |
| * |
| * Copyright (C) International Business Machines Corp., 2002,2006 |
| * Author(s): Steve French (sfrench@us.ibm.com) |
| * |
| * 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 |
| */ |
| #include <linux/fs.h> |
| #include <linux/net.h> |
| #include <linux/string.h> |
| #include <linux/list.h> |
| #include <linux/wait.h> |
| #include <linux/ipv6.h> |
| #include <linux/pagemap.h> |
| #include <linux/ctype.h> |
| #include <linux/utsname.h> |
| #include <linux/mempool.h> |
| #include <linux/delay.h> |
| #include <linux/completion.h> |
| #include <linux/pagevec.h> |
| #include <asm/uaccess.h> |
| #include <asm/processor.h> |
| #include "cifspdu.h" |
| #include "cifsglob.h" |
| #include "cifsproto.h" |
| #include "cifs_unicode.h" |
| #include "cifs_debug.h" |
| #include "cifs_fs_sb.h" |
| #include "ntlmssp.h" |
| #include "nterr.h" |
| #include "rfc1002pdu.h" |
| #include "cn_cifs.h" |
| |
| #define CIFS_PORT 445 |
| #define RFC1001_PORT 139 |
| |
| static DECLARE_COMPLETION(cifsd_complete); |
| |
| extern void SMBencrypt(unsigned char *passwd, unsigned char *c8, |
| unsigned char *p24); |
| extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
| unsigned char *p24); |
| |
| extern mempool_t *cifs_req_poolp; |
| |
| struct smb_vol { |
| char *username; |
| char *password; |
| char *domainname; |
| char *UNC; |
| char *UNCip; |
| char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
| char *iocharset; /* local code page for mapping to and from Unicode */ |
| char source_rfc1001_name[16]; /* netbios name of client */ |
| char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
| uid_t linux_uid; |
| gid_t linux_gid; |
| mode_t file_mode; |
| mode_t dir_mode; |
| unsigned rw:1; |
| unsigned retry:1; |
| unsigned intr:1; |
| unsigned setuids:1; |
| unsigned noperm:1; |
| unsigned no_psx_acl:1; /* set if posix acl support should be disabled */ |
| unsigned cifs_acl:1; |
| unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
| unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ |
| unsigned direct_io:1; |
| unsigned remap:1; /* set to remap seven reserved chars in filenames */ |
| unsigned posix_paths:1; /* unset to not ask for posix pathnames. */ |
| unsigned sfu_emul:1; |
| unsigned krb5:1; |
| unsigned ntlm:1; |
| unsigned ntlmv2:1; |
| unsigned nullauth:1; /* attempt to authenticate with null user */ |
| unsigned sign:1; |
| unsigned seal:1; /* encrypt */ |
| unsigned nocase; /* request case insensitive filenames */ |
| unsigned nobrl; /* disable sending byte range locks to srv */ |
| unsigned int rsize; |
| unsigned int wsize; |
| unsigned int sockopt; |
| unsigned short int port; |
| }; |
| |
| static int ipv4_connect(struct sockaddr_in *psin_server, |
| struct socket **csocket, |
| char * netb_name, |
| char * server_netb_name); |
| static int ipv6_connect(struct sockaddr_in6 *psin_server, |
| struct socket **csocket); |
| |
| |
| /* |
| * cifs tcp session reconnection |
| * |
| * mark tcp session as reconnecting so temporarily locked |
| * mark all smb sessions as reconnecting for tcp session |
| * reconnect tcp session |
| * wake up waiters on reconnection? - (not needed currently) |
| */ |
| |
| int |
| cifs_reconnect(struct TCP_Server_Info *server) |
| { |
| int rc = 0; |
| struct list_head *tmp; |
| struct cifsSesInfo *ses; |
| struct cifsTconInfo *tcon; |
| struct mid_q_entry * mid_entry; |
| |
| spin_lock(&GlobalMid_Lock); |
| if(server->tcpStatus == CifsExiting) { |
| /* the demux thread will exit normally |
| next time through the loop */ |
| spin_unlock(&GlobalMid_Lock); |
| return rc; |
| } else |
| server->tcpStatus = CifsNeedReconnect; |
| spin_unlock(&GlobalMid_Lock); |
| server->maxBuf = 0; |
| |
| cFYI(1, ("Reconnecting tcp session")); |
| |
| /* before reconnecting the tcp session, mark the smb session (uid) |
| and the tid bad so they are not used until reconnected */ |
| read_lock(&GlobalSMBSeslock); |
| list_for_each(tmp, &GlobalSMBSessionList) { |
| ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); |
| if (ses->server) { |
| if (ses->server == server) { |
| ses->status = CifsNeedReconnect; |
| ses->ipc_tid = 0; |
| } |
| } |
| /* else tcp and smb sessions need reconnection */ |
| } |
| list_for_each(tmp, &GlobalTreeConnectionList) { |
| tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
| if((tcon) && (tcon->ses) && (tcon->ses->server == server)) { |
| tcon->tidStatus = CifsNeedReconnect; |
| } |
| } |
| read_unlock(&GlobalSMBSeslock); |
| /* do not want to be sending data on a socket we are freeing */ |
| down(&server->tcpSem); |
| if(server->ssocket) { |
| cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
| server->ssocket->flags)); |
| server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN); |
| cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state, |
| server->ssocket->flags)); |
| sock_release(server->ssocket); |
| server->ssocket = NULL; |
| } |
| |
| spin_lock(&GlobalMid_Lock); |
| list_for_each(tmp, &server->pending_mid_q) { |
| mid_entry = list_entry(tmp, struct |
| mid_q_entry, |
| qhead); |
| if(mid_entry) { |
| if(mid_entry->midState == MID_REQUEST_SUBMITTED) { |
| /* Mark other intransit requests as needing |
| retry so we do not immediately mark the |
| session bad again (ie after we reconnect |
| below) as they timeout too */ |
| mid_entry->midState = MID_RETRY_NEEDED; |
| } |
| } |
| } |
| spin_unlock(&GlobalMid_Lock); |
| up(&server->tcpSem); |
| |
| while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood)) |
| { |
| if(server->protocolType == IPV6) { |
| rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); |
| } else { |
| rc = ipv4_connect(&server->addr.sockAddr, |
| &server->ssocket, |
| server->workstation_RFC1001_name, |
| server->server_RFC1001_name); |
| } |
| if(rc) { |
| cFYI(1,("reconnect error %d",rc)); |
| msleep(3000); |
| } else { |
| atomic_inc(&tcpSesReconnectCount); |
| spin_lock(&GlobalMid_Lock); |
| if(server->tcpStatus != CifsExiting) |
| server->tcpStatus = CifsGood; |
| server->sequence_number = 0; |
| spin_unlock(&GlobalMid_Lock); |
| /* atomic_set(&server->inFlight,0);*/ |
| wake_up(&server->response_q); |
| } |
| } |
| return rc; |
| } |
| |
| /* |
| return codes: |
| 0 not a transact2, or all data present |
| >0 transact2 with that much data missing |
| -EINVAL = invalid transact2 |
| |
| */ |
| static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) |
| { |
| struct smb_t2_rsp * pSMBt; |
| int total_data_size; |
| int data_in_this_rsp; |
| int remaining; |
| |
| if(pSMB->Command != SMB_COM_TRANSACTION2) |
| return 0; |
| |
| /* check for plausible wct, bcc and t2 data and parm sizes */ |
| /* check for parm and data offset going beyond end of smb */ |
| if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ |
| cFYI(1,("invalid transact2 word count")); |
| return -EINVAL; |
| } |
| |
| pSMBt = (struct smb_t2_rsp *)pSMB; |
| |
| total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); |
| data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); |
| |
| remaining = total_data_size - data_in_this_rsp; |
| |
| if(remaining == 0) |
| return 0; |
| else if(remaining < 0) { |
| cFYI(1,("total data %d smaller than data in frame %d", |
| total_data_size, data_in_this_rsp)); |
| return -EINVAL; |
| } else { |
| cFYI(1,("missing %d bytes from transact2, check next response", |
| remaining)); |
| if(total_data_size > maxBufSize) { |
| cERROR(1,("TotalDataSize %d is over maximum buffer %d", |
| total_data_size,maxBufSize)); |
| return -EINVAL; |
| } |
| return remaining; |
| } |
| } |
| |
| static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) |
| { |
| struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; |
| struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; |
| int total_data_size; |
| int total_in_buf; |
| int remaining; |
| int total_in_buf2; |
| char * data_area_of_target; |
| char * data_area_of_buf2; |
| __u16 byte_count; |
| |
| total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); |
| |
| if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
| cFYI(1,("total data sizes of primary and secondary t2 differ")); |
| } |
| |
| total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); |
| |
| remaining = total_data_size - total_in_buf; |
| |
| if(remaining < 0) |
| return -EINVAL; |
| |
| if(remaining == 0) /* nothing to do, ignore */ |
| return 0; |
| |
| total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
| if(remaining < total_in_buf2) { |
| cFYI(1,("transact2 2nd response contains too much data")); |
| } |
| |
| /* find end of first SMB data area */ |
| data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
| le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
| /* validate target area */ |
| |
| data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + |
| le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
| |
| data_area_of_target += total_in_buf; |
| |
| /* copy second buffer into end of first buffer */ |
| memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); |
| total_in_buf += total_in_buf2; |
| pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); |
| byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); |
| byte_count += total_in_buf2; |
| BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); |
| |
| byte_count = pTargetSMB->smb_buf_length; |
| byte_count += total_in_buf2; |
| |
| /* BB also add check that we are not beyond maximum buffer size */ |
| |
| pTargetSMB->smb_buf_length = byte_count; |
| |
| if(remaining == total_in_buf2) { |
| cFYI(1,("found the last secondary response")); |
| return 0; /* we are done */ |
| } else /* more responses to go */ |
| return 1; |
| |
| } |
| |
| static int |
| cifs_demultiplex_thread(struct TCP_Server_Info *server) |
| { |
| int length; |
| unsigned int pdu_length, total_read; |
| struct smb_hdr *smb_buffer = NULL; |
| struct smb_hdr *bigbuf = NULL; |
| struct smb_hdr *smallbuf = NULL; |
| struct msghdr smb_msg; |
| struct kvec iov; |
| struct socket *csocket = server->ssocket; |
| struct list_head *tmp; |
| struct cifsSesInfo *ses; |
| struct task_struct *task_to_wake = NULL; |
| struct mid_q_entry *mid_entry; |
| char temp; |
| int isLargeBuf = FALSE; |
| int isMultiRsp; |
| int reconnect; |
| |
| daemonize("cifsd"); |
| allow_signal(SIGKILL); |
| current->flags |= PF_MEMALLOC; |
| server->tsk = current; /* save process info to wake at shutdown */ |
| cFYI(1, ("Demultiplex PID: %d", current->pid)); |
| write_lock(&GlobalSMBSeslock); |
| atomic_inc(&tcpSesAllocCount); |
| length = tcpSesAllocCount.counter; |
| write_unlock(&GlobalSMBSeslock); |
| complete(&cifsd_complete); |
| if(length > 1) { |
| mempool_resize(cifs_req_poolp, |
| length + cifs_min_rcv, |
| GFP_KERNEL); |
| } |
| |
| while (server->tcpStatus != CifsExiting) { |
| if (try_to_freeze()) |
| continue; |
| if (bigbuf == NULL) { |
| bigbuf = cifs_buf_get(); |
| if(bigbuf == NULL) { |
| cERROR(1,("No memory for large SMB response")); |
| msleep(3000); |
| /* retry will check if exiting */ |
| continue; |
| } |
| } else if(isLargeBuf) { |
| /* we are reusing a dirtry large buf, clear its start */ |
| memset(bigbuf, 0, sizeof (struct smb_hdr)); |
| } |
| |
| if (smallbuf == NULL) { |
| smallbuf = cifs_small_buf_get(); |
| if(smallbuf == NULL) { |
| cERROR(1,("No memory for SMB response")); |
| msleep(1000); |
| /* retry will check if exiting */ |
| continue; |
| } |
| /* beginning of smb buffer is cleared in our buf_get */ |
| } else /* if existing small buf clear beginning */ |
| memset(smallbuf, 0, sizeof (struct smb_hdr)); |
| |
| isLargeBuf = FALSE; |
| isMultiRsp = FALSE; |
| smb_buffer = smallbuf; |
| iov.iov_base = smb_buffer; |
| iov.iov_len = 4; |
| smb_msg.msg_control = NULL; |
| smb_msg.msg_controllen = 0; |
| length = |
| kernel_recvmsg(csocket, &smb_msg, |
| &iov, 1, 4, 0 /* BB see socket.h flags */); |
| |
| if(server->tcpStatus == CifsExiting) { |
| break; |
| } else if (server->tcpStatus == CifsNeedReconnect) { |
| cFYI(1,("Reconnect after server stopped responding")); |
| cifs_reconnect(server); |
| cFYI(1,("call to reconnect done")); |
| csocket = server->ssocket; |
| continue; |
| } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { |
| msleep(1); /* minimum sleep to prevent looping |
| allowing socket to clear and app threads to set |
| tcpStatus CifsNeedReconnect if server hung */ |
| continue; |
| } else if (length <= 0) { |
| if(server->tcpStatus == CifsNew) { |
| cFYI(1,("tcp session abend after SMBnegprot")); |
| /* some servers kill the TCP session rather than |
| returning an SMB negprot error, in which |
| case reconnecting here is not going to help, |
| and so simply return error to mount */ |
| break; |
| } |
| if(length == -EINTR) { |
| cFYI(1,("cifsd thread killed")); |
| break; |
| } |
| cFYI(1,("Reconnect after unexpected peek error %d", |
| length)); |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| wake_up(&server->response_q); |
| continue; |
| } else if (length < 4) { |
| cFYI(1, |
| ("Frame under four bytes received (%d bytes long)", |
| length)); |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| wake_up(&server->response_q); |
| continue; |
| } |
| |
| /* The right amount was read from socket - 4 bytes */ |
| /* so we can now interpret the length field */ |
| |
| /* the first byte big endian of the length field, |
| is actually not part of the length but the type |
| with the most common, zero, as regular data */ |
| temp = *((char *) smb_buffer); |
| |
| /* Note that FC 1001 length is big endian on the wire, |
| but we convert it here so it is always manipulated |
| as host byte order */ |
| pdu_length = ntohl(smb_buffer->smb_buf_length); |
| smb_buffer->smb_buf_length = pdu_length; |
| |
| cFYI(1,("rfc1002 length 0x%x)", pdu_length+4)); |
| |
| if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
| continue; |
| } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
| cFYI(1,("Good RFC 1002 session rsp")); |
| continue; |
| } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
| /* we get this from Windows 98 instead of |
| an error on SMB negprot response */ |
| cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
| pdu_length)); |
| if(server->tcpStatus == CifsNew) { |
| /* if nack on negprot (rather than |
| ret of smb negprot error) reconnecting |
| not going to help, ret error to mount */ |
| break; |
| } else { |
| /* give server a second to |
| clean up before reconnect attempt */ |
| msleep(1000); |
| /* always try 445 first on reconnect |
| since we get NACK on some if we ever |
| connected to port 139 (the NACK is |
| since we do not begin with RFC1001 |
| session initialize frame) */ |
| server->addr.sockAddr.sin_port = |
| htons(CIFS_PORT); |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| wake_up(&server->response_q); |
| continue; |
| } |
| } else if (temp != (char) 0) { |
| cERROR(1,("Unknown RFC 1002 frame")); |
| cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
| length); |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| continue; |
| } |
| |
| /* else we have an SMB response */ |
| if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
| (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
| cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
| length, pdu_length+4)); |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| wake_up(&server->response_q); |
| continue; |
| } |
| |
| /* else length ok */ |
| reconnect = 0; |
| |
| if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
| isLargeBuf = TRUE; |
| memcpy(bigbuf, smallbuf, 4); |
| smb_buffer = bigbuf; |
| } |
| length = 0; |
| iov.iov_base = 4 + (char *)smb_buffer; |
| iov.iov_len = pdu_length; |
| for (total_read = 0; total_read < pdu_length; |
| total_read += length) { |
| length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, |
| pdu_length - total_read, 0); |
| if((server->tcpStatus == CifsExiting) || |
| (length == -EINTR)) { |
| /* then will exit */ |
| reconnect = 2; |
| break; |
| } else if (server->tcpStatus == CifsNeedReconnect) { |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| /* Reconnect wakes up rspns q */ |
| /* Now we will reread sock */ |
| reconnect = 1; |
| break; |
| } else if ((length == -ERESTARTSYS) || |
| (length == -EAGAIN)) { |
| msleep(1); /* minimum sleep to prevent looping, |
| allowing socket to clear and app |
| threads to set tcpStatus |
| CifsNeedReconnect if server hung*/ |
| continue; |
| } else if (length <= 0) { |
| cERROR(1,("Received no data, expecting %d", |
| pdu_length - total_read)); |
| cifs_reconnect(server); |
| csocket = server->ssocket; |
| reconnect = 1; |
| break; |
| } |
| } |
| if(reconnect == 2) |
| break; |
| else if(reconnect == 1) |
| continue; |
| |
| length += 4; /* account for rfc1002 hdr */ |
| |
| |
| dump_smb(smb_buffer, length); |
| if (checkSMB (smb_buffer, smb_buffer->Mid, total_read+4)) { |
| cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
| continue; |
| } |
| |
| |
| task_to_wake = NULL; |
| spin_lock(&GlobalMid_Lock); |
| list_for_each(tmp, &server->pending_mid_q) { |
| mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| |
| if ((mid_entry->mid == smb_buffer->Mid) && |
| (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
| (mid_entry->command == smb_buffer->Command)) { |
| if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
| /* We have a multipart transact2 resp */ |
| isMultiRsp = TRUE; |
| if(mid_entry->resp_buf) { |
| /* merge response - fix up 1st*/ |
| if(coalesce_t2(smb_buffer, |
| mid_entry->resp_buf)) { |
| break; |
| } else { |
| /* all parts received */ |
| goto multi_t2_fnd; |
| } |
| } else { |
| if(!isLargeBuf) { |
| cERROR(1,("1st trans2 resp needs bigbuf")); |
| /* BB maybe we can fix this up, switch |
| to already allocated large buffer? */ |
| } else { |
| /* Have first buffer */ |
| mid_entry->resp_buf = |
| smb_buffer; |
| mid_entry->largeBuf = 1; |
| bigbuf = NULL; |
| } |
| } |
| break; |
| } |
| mid_entry->resp_buf = smb_buffer; |
| if(isLargeBuf) |
| mid_entry->largeBuf = 1; |
| else |
| mid_entry->largeBuf = 0; |
| multi_t2_fnd: |
| task_to_wake = mid_entry->tsk; |
| mid_entry->midState = MID_RESPONSE_RECEIVED; |
| #ifdef CONFIG_CIFS_STATS2 |
| mid_entry->when_received = jiffies; |
| #endif |
| break; |
| } |
| } |
| spin_unlock(&GlobalMid_Lock); |
| if (task_to_wake) { |
| /* Was previous buf put in mpx struct for multi-rsp? */ |
| if(!isMultiRsp) { |
| /* smb buffer will be freed by user thread */ |
| if(isLargeBuf) { |
| bigbuf = NULL; |
| } else |
| smallbuf = NULL; |
| } |
| wake_up_process(task_to_wake); |
| } else if ((is_valid_oplock_break(smb_buffer) == FALSE) |
| && (isMultiRsp == FALSE)) { |
| cERROR(1, ("No task to wake, unknown frame rcvd!")); |
| cifs_dump_mem("Received Data is: ",(char *)smb_buffer, |
| sizeof(struct smb_hdr)); |
| } |
| } /* end while !EXITING */ |
| |
| spin_lock(&GlobalMid_Lock); |
| server->tcpStatus = CifsExiting; |
| server->tsk = NULL; |
| /* check if we have blocked requests that need to free */ |
| /* Note that cifs_max_pending is normally 50, but |
| can be set at module install time to as little as two */ |
| if(atomic_read(&server->inFlight) >= cifs_max_pending) |
| atomic_set(&server->inFlight, cifs_max_pending - 1); |
| /* We do not want to set the max_pending too low or we |
| could end up with the counter going negative */ |
| spin_unlock(&GlobalMid_Lock); |
| /* Although there should not be any requests blocked on |
| this queue it can not hurt to be paranoid and try to wake up requests |
| that may haven been blocked when more than 50 at time were on the wire |
| to the same server - they now will see the session is in exit state |
| and get out of SendReceive. */ |
| wake_up_all(&server->request_q); |
| /* give those requests time to exit */ |
| msleep(125); |
| |
| if(server->ssocket) { |
| sock_release(csocket); |
| server->ssocket = NULL; |
| } |
| /* buffer usuallly freed in free_mid - need to free it here on exit */ |
| if (bigbuf != NULL) |
| cifs_buf_release(bigbuf); |
| if (smallbuf != NULL) |
| cifs_small_buf_release(smallbuf); |
| |
| read_lock(&GlobalSMBSeslock); |
| if (list_empty(&server->pending_mid_q)) { |
| /* loop through server session structures attached to this and |
| mark them dead */ |
| list_for_each(tmp, &GlobalSMBSessionList) { |
| ses = |
| list_entry(tmp, struct cifsSesInfo, |
| cifsSessionList); |
| if (ses->server == server) { |
| ses->status = CifsExiting; |
| ses->server = NULL; |
| } |
| } |
| read_unlock(&GlobalSMBSeslock); |
| } else { |
| /* although we can not zero the server struct pointer yet, |
| since there are active requests which may depnd on them, |
| mark the corresponding SMB sessions as exiting too */ |
| list_for_each(tmp, &GlobalSMBSessionList) { |
| ses = list_entry(tmp, struct cifsSesInfo, |
| cifsSessionList); |
| if (ses->server == server) { |
| ses->status = CifsExiting; |
| } |
| } |
| |
| spin_lock(&GlobalMid_Lock); |
| list_for_each(tmp, &server->pending_mid_q) { |
| mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
| cFYI(1, |
| ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
| task_to_wake = mid_entry->tsk; |
| if(task_to_wake) { |
| wake_up_process(task_to_wake); |
| } |
| } |
| } |
| spin_unlock(&GlobalMid_Lock); |
| read_unlock(&GlobalSMBSeslock); |
| /* 1/8th of sec is more than enough time for them to exit */ |
| msleep(125); |
| } |
| |
| if (!list_empty(&server->pending_mid_q)) { |
| /* mpx threads have not exited yet give them |
| at least the smb send timeout time for long ops */ |
| /* due to delays on oplock break requests, we need |
| to wait at least 45 seconds before giving up |
| on a request getting a response and going ahead |
| and killing cifsd */ |
| cFYI(1, ("Wait for exit from demultiplex thread")); |
| msleep(46000); |
| /* if threads still have not exited they are probably never |
| coming home not much else we can do but free the memory */ |
| } |
| |
| write_lock(&GlobalSMBSeslock); |
| atomic_dec(&tcpSesAllocCount); |
| length = tcpSesAllocCount.counter; |
| |
| /* last chance to mark ses pointers invalid |
| if there are any pointing to this (e.g |
| if a crazy root user tried to kill cifsd |
| kernel thread explicitly this might happen) */ |
| list_for_each(tmp, &GlobalSMBSessionList) { |
| ses = list_entry(tmp, struct cifsSesInfo, |
| cifsSessionList); |
| if (ses->server == server) { |
| ses->server = NULL; |
| } |
| } |
| write_unlock(&GlobalSMBSeslock); |
| |
| kfree(server); |
| if(length > 0) { |
| mempool_resize(cifs_req_poolp, |
| length + cifs_min_rcv, |
| GFP_KERNEL); |
| } |
| |
| complete_and_exit(&cifsd_complete, 0); |
| return 0; |
| } |
| |
| static int |
| cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) |
| { |
| char *value; |
| char *data; |
| unsigned int temp_len, i, j; |
| char separator[2]; |
| |
| separator[0] = ','; |
| separator[1] = 0; |
| |
| memset(vol->source_rfc1001_name,0x20,15); |
| for(i=0;i < strnlen(system_utsname.nodename,15);i++) { |
| /* does not have to be a perfect mapping since the field is |
| informational, only used for servers that do not support |
| port 445 and it can be overridden at mount time */ |
| vol->source_rfc1001_name[i] = |
| toupper(system_utsname.nodename[i]); |
| } |
| vol->source_rfc1001_name[15] = 0; |
| /* null target name indicates to use *SMBSERVR default called name |
| if we end up sending RFC1001 session initialize */ |
| vol->target_rfc1001_name[0] = 0; |
| vol->linux_uid = current->uid; /* current->euid instead? */ |
| vol->linux_gid = current->gid; |
| vol->dir_mode = S_IRWXUGO; |
| /* 2767 perms indicate mandatory locking support */ |
| vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); |
| |
| /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ |
| vol->rw = TRUE; |
| vol->ntlm = TRUE; |
| /* default is always to request posix paths. */ |
| vol->posix_paths = 1; |
| |
| if (!options) |
| return 1; |
| |
| if(strncmp(options,"sep=",4) == 0) { |
| if(options[4] != 0) { |
| separator[0] = options[4]; |
| options += 5; |
| } else { |
| cFYI(1,("Null separator not allowed")); |
| } |
| } |
| |
| while ((data = strsep(&options, separator)) != NULL) { |
| if (!*data) |
| continue; |
| if ((value = strchr(data, '=')) != NULL) |
| *value++ = '\0'; |
| |
| if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ |
| vol->no_xattr = 0; |
| } else if (strnicmp(data, "nouser_xattr",12) == 0) { |
| vol->no_xattr = 1; |
| } else if (strnicmp(data, "user", 4) == 0) { |
| if (!value || !*value) { |
| printk(KERN_WARNING |
| "CIFS: invalid or missing username\n"); |
| return 1; /* needs_arg; */ |
| } |
| if (strnlen(value, 200) < 200) { |
| vol->username = value; |
| } else { |
| printk(KERN_WARNING "CIFS: username too long\n"); |
| return 1; |
| } |
| } else if (strnicmp(data, "pass", 4) == 0) { |
| if (!value) { |
| vol->password = NULL; |
| continue; |
| } else if(value[0] == 0) { |
| /* check if string begins with double comma |
| since that would mean the password really |
| does start with a comma, and would not |
| indicate an empty string */ |
| if(value[1] != separator[0]) { |
| vol->password = NULL; |
| continue; |
| } |
| } |
| temp_len = strlen(value); |
| /* removed password length check, NTLM passwords |
| can be arbitrarily long */ |
| |
| /* if comma in password, the string will be |
| prematurely null terminated. Commas in password are |
| specified across the cifs mount interface by a double |
| comma ie ,, and a comma used as in other cases ie ',' |
| as a parameter delimiter/separator is single and due |
| to the strsep above is temporarily zeroed. */ |
| |
| /* NB: password legally can have multiple commas and |
| the only illegal character in a password is null */ |
| |
| if ((value[temp_len] == 0) && |
| (value[temp_len+1] == separator[0])) { |
| /* reinsert comma */ |
| value[temp_len] = separator[0]; |
| temp_len+=2; /* move after the second comma */ |
| while(value[temp_len] != 0) { |
| if (value[temp_len] == separator[0]) { |
| if (value[temp_len+1] == |
| separator[0]) { |
| /* skip second comma */ |
| temp_len++; |
| } else { |
| /* single comma indicating start |
| of next parm */ |
| break; |
| } |
| } |
| temp_len++; |
| } |
| if(value[temp_len] == 0) { |
| options = NULL; |
| } else { |
| value[temp_len] = 0; |
| /* point option to start of next parm */ |
| options = value + temp_len + 1; |
| } |
| /* go from value to value + temp_len condensing |
| double commas to singles. Note that this ends up |
| allocating a few bytes too many, which is ok */ |
| vol->password = kzalloc(temp_len, GFP_KERNEL); |
| if(vol->password == NULL) { |
| printk("CIFS: no memory for pass\n"); |
| return 1; |
| } |
| for(i=0,j=0;i<temp_len;i++,j++) { |
| vol->password[j] = value[i]; |
| if(value[i] == separator[0] |
| && value[i+1] == separator[0]) { |
| /* skip second comma */ |
| i++; |
| } |
| } |
| vol->password[j] = 0; |
| } else { |
| vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
| if(vol->password == NULL) { |
| printk("CIFS: no memory for pass\n"); |
| return 1; |
| } |
| strcpy(vol->password, value); |
| } |
| } else if (strnicmp(data, "ip", 2) == 0) { |
| if (!value || !*value) { |
| vol->UNCip = NULL; |
| } else if (strnlen(value, 35) < 35) { |
| vol->UNCip = value; |
| } else { |
| printk(KERN_WARNING "CIFS: ip address too long\n"); |
| return 1; |
| } |
| } else if (strnicmp(data, "sec", 3) == 0) { |
| if (!value || !*value) { |
| cERROR(1,("no security value specified")); |
| continue; |
| } else if (strnicmp(value, "krb5i", 5) == 0) { |
| vol->sign = 1; |
| vol->krb5 = 1; |
| } else if (strnicmp(value, "krb5p", 5) == 0) { |
| /* vol->seal = 1; |
| vol->krb5 = 1; */ |
| cERROR(1,("Krb5 cifs privacy not supported")); |
| return 1; |
| } else if (strnicmp(value, "krb5", 4) == 0) { |
| vol->krb5 = 1; |
| } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
| vol->ntlmv2 = 1; |
| vol->sign = 1; |
| } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
| vol->ntlmv2 = 1; |
| } else if (strnicmp(value, "ntlmi", 5) == 0) { |
| vol->ntlm = 1; |
| vol->sign = 1; |
| } else if (strnicmp(value, "ntlm", 4) == 0) { |
| /* ntlm is default so can be turned off too */ |
| vol->ntlm = 1; |
| } else if (strnicmp(value, "nontlm", 6) == 0) { |
| vol->ntlm = 0; |
| } else if (strnicmp(value, "none", 4) == 0) { |
| vol->nullauth = 1; |
| } else { |
| cERROR(1,("bad security option: %s", value)); |
| return 1; |
| } |
| } else if ((strnicmp(data, "unc", 3) == 0) |
| || (strnicmp(data, "target", 6) == 0) |
| || (strnicmp(data, "path", 4) == 0)) { |
| if (!value || !*value) { |
| printk(KERN_WARNING |
| "CIFS: invalid path to network resource\n"); |
| return 1; /* needs_arg; */ |
| } |
| if ((temp_len = strnlen(value, 300)) < 300) { |
| vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); |
| if(vol->UNC == NULL) |
| return 1; |
| strcpy(vol->UNC,value); |
| if (strncmp(vol->UNC, "//", 2) == 0) { |
| vol->UNC[0] = '\\'; |
| vol->UNC[1] = '\\'; |
| } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
| printk(KERN_WARNING |
| "CIFS: UNC Path does not begin with // or \\\\ \n"); |
| return 1; |
| } |
| } else { |
| printk(KERN_WARNING "CIFS: UNC name too long\n"); |
| return 1; |
| } |
| } else if ((strnicmp(data, "domain", 3) == 0) |
| || (strnicmp(data, "workgroup", 5) == 0)) { |
| if (!value || !*value) { |
| printk(KERN_WARNING "CIFS: invalid domain name\n"); |
| return 1; /* needs_arg; */ |
| } |
| /* BB are there cases in which a comma can be valid in |
| a domain name and need special handling? */ |
| if (strnlen(value, 65) < 65) { |
| vol->domainname = value; |
| cFYI(1, ("Domain name set")); |
| } else { |
| printk(KERN_WARNING "CIFS: domain name too long\n"); |
| return 1; |
| } |
| } else if (strnicmp(data, "iocharset", 9) == 0) { |
| if (!value || !*value) { |
| printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); |
| return 1; /* needs_arg; */ |
| } |
| if (strnlen(value, 65) < 65) { |
| if(strnicmp(value,"default",7)) |
| vol->iocharset = value; |
| /* if iocharset not set load_nls_default used by caller */ |
| cFYI(1, ("iocharset set to %s",value)); |
| } else { |
| printk(KERN_WARNING "CIFS: iocharset name too long.\n"); |
| return 1; |
| } |
| } else if (strnicmp(data, "uid", 3) == 0) { |
| if (value && *value) { |
| vol->linux_uid = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "gid", 3) == 0) { |
| if (value && *value) { |
| vol->linux_gid = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "file_mode", 4) == 0) { |
| if (value && *value) { |
| vol->file_mode = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "dir_mode", 4) == 0) { |
| if (value && *value) { |
| vol->dir_mode = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "dirmode", 4) == 0) { |
| if (value && *value) { |
| vol->dir_mode = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "port", 4) == 0) { |
| if (value && *value) { |
| vol->port = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "rsize", 5) == 0) { |
| if (value && *value) { |
| vol->rsize = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "wsize", 5) == 0) { |
| if (value && *value) { |
| vol->wsize = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "sockopt", 5) == 0) { |
| if (value && *value) { |
| vol->sockopt = |
| simple_strtoul(value, &value, 0); |
| } |
| } else if (strnicmp(data, "netbiosname", 4) == 0) { |
| if (!value || !*value || (*value == ' ')) { |
| cFYI(1,("invalid (empty) netbiosname specified")); |
| } else { |
| memset(vol->source_rfc1001_name,0x20,15); |
| for(i=0;i<15;i++) { |
| /* BB are there cases in which a comma can be |
| valid in this workstation netbios name (and need |
| special handling)? */ |
| |
| /* We do not uppercase netbiosname for user */ |
| if (value[i]==0) |
| break; |
| else |
| vol->source_rfc1001_name[i] = value[i]; |
| } |
| /* The string has 16th byte zero still from |
| set at top of the function */ |
| if((i==15) && (value[i] != 0)) |
| printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n"); |
| } |
| } else if (strnicmp(data, "servern", 7) == 0) { |
| /* servernetbiosname specified override *SMBSERVER */ |
| if (!value || !*value || (*value == ' ')) { |
| cFYI(1,("empty server netbiosname specified")); |
| } else { |
| /* last byte, type, is 0x20 for servr type */ |
| memset(vol->target_rfc1001_name,0x20,16); |
| |
| for(i=0;i<15;i++) { |
| /* BB are there cases in which a comma can be |
| valid in this workstation netbios name (and need |
| special handling)? */ |
| |
| /* user or mount helper must uppercase netbiosname */ |
| if (value[i]==0) |
| break; |
| else |
| vol->target_rfc1001_name[i] = value[i]; |
| } |
| /* The string has 16th byte zero still from |
| set at top of the function */ |
| if((i==15) && (value[i] != 0)) |
| printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n"); |
| } |
| } else if (strnicmp(data, "credentials", 4) == 0) { |
| /* ignore */ |
| } else if (strnicmp(data, "version", 3) == 0) { |
| /* ignore */ |
| } else if (strnicmp(data, "guest",5) == 0) { |
| /* ignore */ |
| } else if (strnicmp(data, "rw", 2) == 0) { |
| vol->rw = TRUE; |
| } else if ((strnicmp(data, "suid", 4) == 0) || |
| (strnicmp(data, "nosuid", 6) == 0) || |
| (strnicmp(data, "exec", 4) == 0) || |
| (strnicmp(data, "noexec", 6) == 0) || |
| (strnicmp(data, "nodev", 5) == 0) || |
| (strnicmp(data, "noauto", 6) == 0) || |
| (strnicmp(data, "dev", 3) == 0)) { |
| /* The mount tool or mount.cifs helper (if present) |
| uses these opts to set flags, and the flags are read |
| by the kernel vfs layer before we get here (ie |
| before read super) so there is no point trying to |
| parse these options again and set anything and it |
| is ok to just ignore them */ |
| continue; |
| } else if (strnicmp(data, "ro", 2) == 0) { |
| vol->rw = FALSE; |
| } else if (strnicmp(data, "hard", 4) == 0) { |
| vol->retry = 1; |
| } else if (strnicmp(data, "soft", 4) == 0) { |
| vol->retry = 0; |
| } else if (strnicmp(data, "perm", 4) == 0) { |
| vol->noperm = 0; |
| } else if (strnicmp(data, "noperm", 6) == 0) { |
| vol->noperm = 1; |
| } else if (strnicmp(data, "mapchars", 8) == 0) { |
| vol->remap = 1; |
| } else if (strnicmp(data, "nomapchars", 10) == 0) { |
| vol->remap = 0; |
| } else if (strnicmp(data, "sfu", 3) == 0) { |
| vol->sfu_emul = 1; |
| } else if (strnicmp(data, "nosfu", 5) == 0) { |
| vol->sfu_emul = 0; |
| } else if (strnicmp(data, "posixpaths", 10) == 0) { |
| vol->posix_paths = 1; |
| } else if (strnicmp(data, "noposixpaths", 12) == 0) { |
| vol->posix_paths = 0; |
| } else if ((strnicmp(data, "nocase", 6) == 0) || |
| (strnicmp(data, "ignorecase", 10) == 0)) { |
| vol->nocase = 1; |
| } else if (strnicmp(data, "brl", 3) == 0) { |
| vol->nobrl = 0; |
| } else if ((strnicmp(data, "nobrl", 5) == 0) || |
| (strnicmp(data, "nolock", 6) == 0)) { |
| vol->nobrl = 1; |
| /* turn off mandatory locking in mode |
| if remote locking is turned off since the |
| local vfs will do advisory */ |
| if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) |
| vol->file_mode = S_IALLUGO; |
| } else if (strnicmp(data, "setuids", 7) == 0) { |
| vol->setuids = 1; |
| } else if (strnicmp(data, "nosetuids", 9) == 0) { |
| vol->setuids = 0; |
| } else if (strnicmp(data, "nohard", 6) == 0) { |
| vol->retry = 0; |
| } else if (strnicmp(data, "nosoft", 6) == 0) { |
| vol->retry = 1; |
| } else if (strnicmp(data, "nointr", 6) == 0) { |
| vol->intr = 0; |
| } else if (strnicmp(data, "intr", 4) == 0) { |
| vol->intr = 1; |
| } else if (strnicmp(data, "serverino",7) == 0) { |
| vol->server_ino = 1; |
| } else if (strnicmp(data, "noserverino",9) == 0) { |
| vol->server_ino = 0; |
| } else if (strnicmp(data, "cifsacl",7) == 0) { |
| vol->cifs_acl = 1; |
| } else if (strnicmp(data, "nocifsacl", 9) == 0) { |
| vol->cifs_acl = 0; |
| } else if (strnicmp(data, "acl",3) == 0) { |
| vol->no_psx_acl = 0; |
| } else if (strnicmp(data, "noacl",5) == 0) { |
| vol->no_psx_acl = 1; |
| } else if (strnicmp(data, "direct",6) == 0) { |
| vol->direct_io = 1; |
| } else if (strnicmp(data, "forcedirectio",13) == 0) { |
| vol->direct_io = 1; |
| } else if (strnicmp(data, "in6_addr",8) == 0) { |
| if (!value || !*value) { |
| vol->in6_addr = NULL; |
| } else if (strnlen(value, 49) == 48) { |
| vol->in6_addr = value; |
| } else { |
| printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); |
| return 1; |
| } |
| } else if (strnicmp(data, "noac", 4) == 0) { |
| printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); |
| } else |
| printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); |
| } |
| if (vol->UNC == NULL) { |
| if(devname == NULL) { |
| printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); |
| return 1; |
| } |
| if ((temp_len = strnlen(devname, 300)) < 300) { |
| vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); |
| if(vol->UNC == NULL) |
| return 1; |
| strcpy(vol->UNC,devname); |
| if (strncmp(vol->UNC, "//", 2) == 0) { |
| vol->UNC[0] = '\\'; |
| vol->UNC[1] = '\\'; |
| } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
| printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); |
| return 1; |
| } |
| } else { |
| printk(KERN_WARNING "CIFS: UNC name too long\n"); |
| return 1; |
| } |
| } |
| if(vol->UNCip == NULL) |
| vol->UNCip = &vol->UNC[2]; |
| |
| return 0; |
| } |
| |
| static struct cifsSesInfo * |
| cifs_find_tcp_session(struct in_addr * target_ip_addr, |
| struct in6_addr *target_ip6_addr, |
| char *userName, struct TCP_Server_Info **psrvTcp) |
| { |
| struct list_head *tmp; |
| struct cifsSesInfo *ses; |
| *psrvTcp = NULL; |
| read_lock(&GlobalSMBSeslock); |
| |
| list_for_each(tmp, &GlobalSMBSessionList) { |
| ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); |
| if (ses->server) { |
| if((target_ip_addr && |
| (ses->server->addr.sockAddr.sin_addr.s_addr |
| == target_ip_addr->s_addr)) || (target_ip6_addr |
| && memcmp(&ses->server->addr.sockAddr6.sin6_addr, |
| target_ip6_addr,sizeof(*target_ip6_addr)))){ |
| /* BB lock server and tcp session and increment use count here?? */ |
| *psrvTcp = ses->server; /* found a match on the TCP session */ |
| /* BB check if reconnection needed */ |
| if (strncmp |
| (ses->userName, userName, |
| MAX_USERNAME_SIZE) == 0){ |
| read_unlock(&GlobalSMBSeslock); |
| return ses; /* found exact match on both tcp and SMB sessions */ |
| } |
| } |
| } |
| /* else tcp and smb sessions need reconnection */ |
| } |
| read_unlock(&GlobalSMBSeslock); |
| return NULL; |
| } |
| |
| static struct cifsTconInfo * |
| find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) |
| { |
| struct list_head *tmp; |
| struct cifsTconInfo *tcon; |
| |
| read_lock(&GlobalSMBSeslock); |
| list_for_each(tmp, &GlobalTreeConnectionList) { |
| cFYI(1, ("Next tcon - ")); |
| tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
| if (tcon->ses) { |
| if (tcon->ses->server) { |
| cFYI(1, |
| (" old ip addr: %x == new ip %x ?", |
| tcon->ses->server->addr.sockAddr.sin_addr. |
| s_addr, new_target_ip_addr)); |
| if (tcon->ses->server->addr.sockAddr.sin_addr. |
| s_addr == new_target_ip_addr) { |
| /* BB lock tcon and server and tcp session and increment use count here? */ |
| /* found a match on the TCP session */ |
| /* BB check if reconnection needed */ |
| cFYI(1,("Matched ip, old UNC: %s == new: %s ?", |
| tcon->treeName, uncName)); |
| if (strncmp |
| (tcon->treeName, uncName, |
| MAX_TREE_SIZE) == 0) { |
| cFYI(1, |
| ("Matched UNC, old user: %s == new: %s ?", |
| tcon->treeName, uncName)); |
| if (strncmp |
| (tcon->ses->userName, |
| userName, |
| MAX_USERNAME_SIZE) == 0) { |
| read_unlock(&GlobalSMBSeslock); |
| return tcon;/* also matched user (smb session)*/ |
| } |
| } |
| } |
| } |
| } |
| } |
| read_unlock(&GlobalSMBSeslock); |
| return NULL; |
| } |
| |
| int |
| connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, |
| const char *old_path, const struct nls_table *nls_codepage, |
| int remap) |
| { |
| unsigned char *referrals = NULL; |
| unsigned int num_referrals; |
| int rc = 0; |
| |
| rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, |
| &num_referrals, &referrals, remap); |
| |
| /* BB Add in code to: if valid refrl, if not ip address contact |
| the helper that resolves tcp names, mount to it, try to |
| tcon to it unmount it if fail */ |
| |
| kfree(referrals); |
| |
| return rc; |
| } |
| |
| int |
| get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, |
| const char *old_path, const struct nls_table *nls_codepage, |
| unsigned int *pnum_referrals, |
| unsigned char ** preferrals, int remap) |
| { |
| char *temp_unc; |
| int rc = 0; |
| |
| *pnum_referrals = 0; |
| |
| if (pSesInfo->ipc_tid == 0) { |
| temp_unc = kmalloc(2 /* for slashes */ + |
| strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) |
| + 1 + 4 /* slash IPC$ */ + 2, |
| GFP_KERNEL); |
| if (temp_unc == NULL) |
| return -ENOMEM; |
| temp_unc[0] = '\\'; |
| temp_unc[1] = '\\'; |
| strcpy(temp_unc + 2, pSesInfo->serverName); |
| strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); |
| rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); |
| cFYI(1, |
| ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); |
| kfree(temp_unc); |
| } |
| if (rc == 0) |
| rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
| pnum_referrals, nls_codepage, remap); |
| |
| return rc; |
| } |
| |
| /* See RFC1001 section 14 on representation of Netbios names */ |
| static void rfc1002mangle(char * target,char * source, unsigned int length) |
| { |
| unsigned int i,j; |
| |
| for(i=0,j=0;i<(length);i++) { |
| /* mask a nibble at a time and encode */ |
| target[j] = 'A' + (0x0F & (source[i] >> 4)); |
| target[j+1] = 'A' + (0x0F & source[i]); |
| j+=2; |
| } |
| |
| } |
| |
| |
| static int |
| ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
| char * netbios_name, char * target_name) |
| { |
| int rc = 0; |
| int connected = 0; |
| __be16 orig_port = 0; |
| |
| if(*csocket == NULL) { |
| rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); |
| if (rc < 0) { |
| cERROR(1, ("Error %d creating socket",rc)); |
| *csocket = NULL; |
| return rc; |
| } else { |
| /* BB other socket options to set KEEPALIVE, NODELAY? */ |
| cFYI(1,("Socket created")); |
| (*csocket)->sk->sk_allocation = GFP_NOFS; |
| } |
| } |
| |
| psin_server->sin_family = AF_INET; |
| if(psin_server->sin_port) { /* user overrode default port */ |
| rc = (*csocket)->ops->connect(*csocket, |
| (struct sockaddr *) psin_server, |
| sizeof (struct sockaddr_in),0); |
| if (rc >= 0) |
| connected = 1; |
| } |
| |
| if(!connected) { |
| /* save original port so we can retry user specified port |
| later if fall back ports fail this time */ |
| orig_port = psin_server->sin_port; |
| |
| /* do not retry on the same port we just failed on */ |
| if(psin_server->sin_port != htons(CIFS_PORT)) { |
| psin_server->sin_port = htons(CIFS_PORT); |
| |
| rc = (*csocket)->ops->connect(*csocket, |
| (struct sockaddr *) psin_server, |
| sizeof (struct sockaddr_in),0); |
| if (rc >= 0) |
| connected = 1; |
| } |
| } |
| if (!connected) { |
| psin_server->sin_port = htons(RFC1001_PORT); |
| rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) |
| psin_server, sizeof (struct sockaddr_in),0); |
| if (rc >= 0) |
| connected = 1; |
| } |
| |
| /* give up here - unless we want to retry on different |
| protocol families some day */ |
| if (!connected) { |
| if(orig_port) |
| psin_server->sin_port = orig_port; |
| cFYI(1,("Error %d connecting to server via ipv4",rc)); |
| sock_release(*csocket); |
| *csocket = NULL; |
| return rc; |
| } |
| /* Eventually check for other socket options to change from |
| the default. sock_setsockopt not used because it expects |
| user space buffer */ |
| cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf, |
| (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
| (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
| /* make the bufsizes depend on wsize/rsize and max requests */ |
| if((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
| (*csocket)->sk->sk_sndbuf = 200 * 1024; |
| if((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
| (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
| |
| /* send RFC1001 sessinit */ |
| if(psin_server->sin_port == htons(RFC1001_PORT)) { |
| /* some servers require RFC1001 sessinit before sending |
| negprot - BB check reconnection in case where second |
| sessinit is sent but no second negprot */ |
| struct rfc1002_session_packet * ses_init_buf; |
| struct smb_hdr * smb_buf; |
| ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
| if(ses_init_buf) { |
| ses_init_buf->trailer.session_req.called_len = 32; |
| if(target_name && (target_name[0] != 0)) { |
| rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
| target_name, 16); |
| } else { |
| rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
| DEFAULT_CIFS_CALLED_NAME,16); |
| } |
| |
| ses_init_buf->trailer.session_req.calling_len = 32; |
| /* calling name ends in null (byte 16) from old smb |
| convention. */ |
| if(netbios_name && (netbios_name[0] !=0)) { |
| rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
| netbios_name,16); |
| } else { |
| rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
| "LINUX_CIFS_CLNT",16); |
| } |
| ses_init_buf->trailer.session_req.scope1 = 0; |
| ses_init_buf->trailer.session_req.scope2 = 0; |
| smb_buf = (struct smb_hdr *)ses_init_buf; |
| /* sizeof RFC1002_SESSION_REQUEST with no scope */ |
| smb_buf->smb_buf_length = 0x81000044; |
| rc = smb_send(*csocket, smb_buf, 0x44, |
| (struct sockaddr *)psin_server); |
| kfree(ses_init_buf); |
| } |
| /* else the negprot may still work without this |
| even though malloc failed */ |
| |
| } |
| |
| return rc; |
| } |
| |
| static int |
| ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) |
| { |
| int rc = 0; |
| int connected = 0; |
| __be16 orig_port = 0; |
| |
| if(*csocket == NULL) { |
| rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); |
| if (rc < 0) { |
| cERROR(1, ("Error %d creating ipv6 socket",rc)); |
| *csocket = NULL; |
| return rc; |
| } else { |
| /* BB other socket options to set KEEPALIVE, NODELAY? */ |
| cFYI(1,("ipv6 Socket created")); |
| (*csocket)->sk->sk_allocation = GFP_NOFS; |
| } |
| } |
| |
| psin_server->sin6_family = AF_INET6; |
| |
| if(psin_server->sin6_port) { /* user overrode default port */ |
| rc = (*csocket)->ops->connect(*csocket, |
| (struct sockaddr *) psin_server, |
| sizeof (struct sockaddr_in6),0); |
| if (rc >= 0) |
| connected = 1; |
| } |
| |
| if(!connected) { |
| /* save original port so we can retry user specified port |
| later if fall back ports fail this time */ |
| |
| orig_port = psin_server->sin6_port; |
| /* do not retry on the same port we just failed on */ |
| if(psin_server->sin6_port != htons(CIFS_PORT)) { |
| psin_server->sin6_port = htons(CIFS_PORT); |
| |
| rc = (*csocket)->ops->connect(*csocket, |
| (struct sockaddr *) psin_server, |
| sizeof (struct sockaddr_in6),0); |
| if (rc >= 0) |
| connected = 1; |
| } |
| } |
| if (!connected) { |
| psin_server->sin6_port = htons(RFC1001_PORT); |
| rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) |
| psin_server, sizeof (struct sockaddr_in6),0); |
| if (rc >= 0) |
| connected = 1; |
| } |
| |
| /* give up here - unless we want to retry on different |
| protocol families some day */ |
| if (!connected) { |
| if(orig_port) |
| psin_server->sin6_port = orig_port; |
| cFYI(1,("Error %d connecting to server via ipv6",rc)); |
| sock_release(*csocket); |
| *csocket = NULL; |
| return rc; |
| } |
| /* Eventually check for other socket options to change from |
| the default. sock_setsockopt not used because it expects |
| user space buffer */ |
| (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
| |
| return rc; |
| } |
| |
| int |
| cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, |
| char *mount_data, const char *devname) |
| { |
| int rc = 0; |
| int xid; |
| int address_type = AF_INET; |
| struct socket *csocket = NULL; |
| struct sockaddr_in sin_server; |
| struct sockaddr_in6 sin_server6; |
| struct smb_vol volume_info; |
| struct cifsSesInfo *pSesInfo = NULL; |
| struct cifsSesInfo *existingCifsSes = NULL; |
| struct cifsTconInfo *tcon = NULL; |
| struct TCP_Server_Info *srvTcp = NULL; |
| |
| xid = GetXid(); |
| |
| /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ |
| |
| memset(&volume_info,0,sizeof(struct smb_vol)); |
| if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -EINVAL; |
| } |
| |
| if (volume_info.username) { |
| /* BB fixme parse for domain name here */ |
| cFYI(1, ("Username: %s ", volume_info.username)); |
| |
| } else { |
| cifserror("No username specified"); |
| /* In userspace mount helper we can get user name from alternate |
| locations such as env variables and files on disk */ |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -EINVAL; |
| } |
| |
| if (volume_info.UNCip && volume_info.UNC) { |
| rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); |
| |
| if(rc <= 0) { |
| /* not ipv4 address, try ipv6 */ |
| rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); |
| if(rc > 0) |
| address_type = AF_INET6; |
| } else { |
| address_type = AF_INET; |
| } |
| |
| if(rc <= 0) { |
| /* we failed translating address */ |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -EINVAL; |
| } |
| |
| cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); |
| /* success */ |
| rc = 0; |
| } else if (volume_info.UNCip){ |
| /* BB using ip addr as server name connect to the DFS root below */ |
| cERROR(1,("Connecting to DFS root not implemented yet")); |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -EINVAL; |
| } else /* which servers DFS root would we conect to */ { |
| cERROR(1, |
| ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -EINVAL; |
| } |
| |
| /* this is needed for ASCII cp to Unicode converts */ |
| if(volume_info.iocharset == NULL) { |
| cifs_sb->local_nls = load_nls_default(); |
| /* load_nls_default can not return null */ |
| } else { |
| cifs_sb->local_nls = load_nls(volume_info.iocharset); |
| if(cifs_sb->local_nls == NULL) { |
| cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -ELIBACC; |
| } |
| } |
| |
| if(address_type == AF_INET) |
| existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
| NULL /* no ipv6 addr */, |
| volume_info.username, &srvTcp); |
| else if(address_type == AF_INET6) |
| existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
| &sin_server6.sin6_addr, |
| volume_info.username, &srvTcp); |
| else { |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return -EINVAL; |
| } |
| |
| |
| if (srvTcp) { |
| cFYI(1, ("Existing tcp session with server found")); |
| } else { /* create socket */ |
| if(volume_info.port) |
| sin_server.sin_port = htons(volume_info.port); |
| else |
| sin_server.sin_port = 0; |
| rc = ipv4_connect(&sin_server,&csocket, |
| volume_info.source_rfc1001_name, |
| volume_info.target_rfc1001_name); |
| if (rc < 0) { |
| cERROR(1, |
| ("Error connecting to IPv4 socket. Aborting operation")); |
| if(csocket != NULL) |
| sock_release(csocket); |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return rc; |
| } |
| |
| srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); |
| if (srvTcp == NULL) { |
| rc = -ENOMEM; |
| sock_release(csocket); |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return rc; |
| } else { |
| memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); |
| memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); |
| atomic_set(&srvTcp->inFlight,0); |
| /* BB Add code for ipv6 case too */ |
| srvTcp->ssocket = csocket; |
| srvTcp->protocolType = IPV4; |
| init_waitqueue_head(&srvTcp->response_q); |
| init_waitqueue_head(&srvTcp->request_q); |
| INIT_LIST_HEAD(&srvTcp->pending_mid_q); |
| /* at this point we are the only ones with the pointer |
| to the struct since the kernel thread not created yet |
| so no need to spinlock this init of tcpStatus */ |
| srvTcp->tcpStatus = CifsNew; |
| init_MUTEX(&srvTcp->tcpSem); |
| rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, |
| CLONE_FS | CLONE_FILES | CLONE_VM); |
| if(rc < 0) { |
| rc = -ENOMEM; |
| sock_release(csocket); |
| kfree(volume_info.UNC); |
| kfree(volume_info.password); |
| FreeXid(xid); |
| return rc; |
| } |
| wait_for_completion(&cifsd_complete); |
| rc = 0; |
| memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
| memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
| srvTcp->sequence_number = 0; |
| } |
| } |
| |
| if (existingCifsSes) { |
| pSesInfo = existingCifsSes; |
| cFYI(1, ("Existing smb sess found")); |
| kfree(volume_info.password); |
| /* volume_info.UNC freed at end of function */ |
| } else if (!rc) { |
| cFYI(1, ("Existing smb sess not found")); |
| pSesInfo = sesInfoAlloc(); |
| if (pSesInfo == NULL) |
| rc = -ENOMEM; |
| else { |
| pSesInfo->server = srvTcp; |
| sprintf(pSesInfo->serverName, "%u.%u.%u.%u", |
| NIPQUAD(sin_server.sin_addr.s_addr)); |
| } |
| |
| if (!rc){ |
| /* volume_info.password freed at unmount */ |
| if (volume_info.password) |
| pSesInfo->password = volume_info.password; |
| if (volume_info.username) |
| strncpy(pSesInfo->userName, |
| volume_info.username,MAX_USERNAME_SIZE); |
| if (volume_info.domainname) |
| strncpy(pSesInfo->domainName, |
| volume_info.domainname,MAX_USERNAME_SIZE); |
| pSesInfo->linux_uid = volume_info.linux_uid; |
| down(&pSesInfo->sesSem); |
| rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); |
| up(&pSesInfo->sesSem); |
| if(!rc) |
| atomic_inc(&srvTcp->socketUseCount); |
| } else |
| kfree(volume_info.password); |
| } |
| |
| /* search for existing tcon to this server share */ |
| if (!rc) { |
| if(volume_info.rsize > CIFSMaxBufSize) { |
| cERROR(1,("rsize %d too large, using MaxBufSize", |
| volume_info.rsize)); |
| cifs_sb->rsize = CIFSMaxBufSize; |
| } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) |
| cifs_sb->rsize = volume_info.rsize; |
| else /* default */ |
| cifs_sb->rsize = CIFSMaxBufSize; |
| |
| if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
| cERROR(1,("wsize %d too large using 4096 instead", |
| volume_info.wsize)); |
| cifs_sb->wsize = 4096; |
| } else if(volume_info.wsize) |
| cifs_sb->wsize = volume_info.wsize; |
| else |
| cifs_sb->wsize = |
| min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
| 127*1024); |
| /* old default of CIFSMaxBufSize was too small now |
| that SMB Write2 can send multiple pages in kvec. |
| RFC1001 does not describe what happens when frame |
| bigger than 128K is sent so use that as max in |
| conjunction with 52K kvec constraint on arch with 4K |
| page size */ |
| |
| if(cifs_sb->rsize < PAGE_CACHE_SIZE) { |
| cifs_sb->rsize = PAGE_CACHE_SIZE; |
| /* Windows ME does this */ |
| cFYI(1,("Attempt to set readsize for mount to less than one page (4096)")); |
| } |
| cifs_sb->mnt_uid = volume_info.linux_uid; |
| cifs_sb->mnt_gid = volume_info.linux_gid; |
| cifs_sb->mnt_file_mode = volume_info.file_mode; |
| cifs_sb->mnt_dir_mode = volume_info.dir_mode; |
| cFYI(1,("file mode: 0x%x dir mode: 0x%x", |
| cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); |
| |
| if(volume_info.noperm) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
| if(volume_info.setuids) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
| if(volume_info.server_ino) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
| if(volume_info.remap) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
| if(volume_info.no_xattr) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
| if(volume_info.sfu_emul) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
| if(volume_info.nobrl) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
| if(volume_info.cifs_acl) |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
| |
| if(volume_info.direct_io) { |
| cFYI(1,("mounting share using direct i/o")); |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
| } |
| |
| tcon = |
| find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, |
| volume_info.username); |
| if (tcon) { |
| cFYI(1, ("Found match on UNC path")); |
| /* we can have only one retry value for a connection |
| to a share so for resources mounted more than once |
| to the same server share the last value passed in |
| for the retry flag is used */ |
| tcon->retry = volume_info.retry; |
| tcon->nocase = volume_info.nocase; |
| } else { |
| tcon = tconInfoAlloc(); |
| if (tcon == NULL) |
| rc = -ENOMEM; |
| else { |
| /* check for null share name ie connect to dfs root */ |
| |
| /* BB check if this works for exactly length three strings */ |
| if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
| && (strchr(volume_info.UNC + 3, '/') == |
| NULL)) { |
| rc = connect_to_dfs_path(xid, pSesInfo, |
| "", cifs_sb->local_nls, |
| cifs_sb->mnt_cifs_flags & |
| CIFS_MOUNT_MAP_SPECIAL_CHR); |
| kfree(volume_info.UNC); |
| FreeXid(xid); |
| return -ENODEV; |
| } else { |
| rc = CIFSTCon(xid, pSesInfo, |
| volume_info.UNC, |
| tcon, cifs_sb->local_nls); |
| cFYI(1, ("CIFS Tcon rc = %d", rc)); |
| } |
| if (!rc) { |
| atomic_inc(&pSesInfo->inUse); |
| tcon->retry = volume_info.retry; |
| tcon->nocase = volume_info.nocase; |
| } |
| } |
| } |
| } |
| if(pSesInfo) { |
| if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
| sb->s_maxbytes = (u64) 1 << 63; |
| } else |
| sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ |
| } |
| |
| sb->s_time_gran = 100; |
| |
| /* on error free sesinfo and tcon struct if needed */ |
| if (rc) { |
| /* if session setup failed, use count is zero but |
| we still need to free cifsd thread */ |
| if(atomic_read(&srvTcp->socketUseCount) == 0) { |
| spin_lock(&GlobalMid_Lock); |
| srvTcp->tcpStatus = CifsExiting; |
| spin_unlock(&GlobalMid_Lock); |
| if(srvTcp->tsk) { |
| send_sig(SIGKILL,srvTcp->tsk,1); |
| wait_for_completion(&cifsd_complete); |
| } |
| } |
| /* If find_unc succeeded then rc == 0 so we can not end */ |
| if (tcon) /* up accidently freeing someone elses tcon struct */ |
| tconInfoFree(tcon); |
| if (existingCifsSes == NULL) { |
| if (pSesInfo) { |
| if ((pSesInfo->server) && |
| (pSesInfo->status == CifsGood)) { |
| int temp_rc; |
| temp_rc = CIFSSMBLogoff(xid, pSesInfo); |
| /* if the socketUseCount is now zero */ |
| if((temp_rc == -ESHUTDOWN) && |
| (pSesInfo->server->tsk)) { |
| send_sig(SIGKILL,pSesInfo->server->tsk,1); |
| wait_for_completion(&cifsd_complete); |
| } |
| } else |
| cFYI(1, ("No session or bad tcon")); |
| sesInfoFree(pSesInfo); |
| /* pSesInfo = NULL; */ |
| } |
| } |
| } else { |
| atomic_inc(&tcon->useCount); |
| cifs_sb->tcon = tcon; |
| tcon->ses = pSesInfo; |
| |
| /* do not care if following two calls succeed - informational only */ |
| CIFSSMBQFSDeviceInfo(xid, tcon); |
| CIFSSMBQFSAttributeInfo(xid, tcon); |
| if (tcon->ses->capabilities & CAP_UNIX) { |
| if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
| if(!volume_info.no_psx_acl) { |
| if(CIFS_UNIX_POSIX_ACL_CAP & |
| le64_to_cpu(tcon->fsUnixInfo.Capability)) |
| cFYI(1,("server negotiated posix acl support")); |
| sb->s_flags |= MS_POSIXACL; |
| } |
| |
| /* Try and negotiate POSIX pathnames if we can. */ |
| if (volume_info.posix_paths && (CIFS_UNIX_POSIX_PATHNAMES_CAP & |
| le64_to_cpu(tcon->fsUnixInfo.Capability))) { |
| if (!CIFSSMBSetFSUnixInfo(xid, tcon, CIFS_UNIX_POSIX_PATHNAMES_CAP)) { |
| cFYI(1,("negotiated posix pathnames support")); |
| cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS; |
| } else { |
| cFYI(1,("posix pathnames support requested but not supported")); |
| } |
| } |
| } |
| } |
| if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
| cifs_sb->wsize = min(cifs_sb->wsize, |
| (tcon->ses->server->maxBuf - |
| MAX_CIFS_HDR_SIZE)); |
| if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
| cifs_sb->rsize = min(cifs_sb->rsize, |
| (tcon->ses->server->maxBuf - |
| MAX_CIFS_HDR_SIZE)); |
| } |
| |
| /* volume_info.password is freed above when existing session found |
| (in which case it is not needed anymore) but when new sesion is created |
| the password ptr is put in the new session structure (in which case the |
| password will be freed at unmount time) */ |
| kfree(volume_info.UNC); |
| FreeXid(xid); |
| return rc; |
| } |
| |
| static int |
| CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, |
| char session_key[CIFS_SESSION_KEY_SIZE], |
| const struct nls_table *nls_codepage) |
| { |
| struct smb_hdr *smb_buffer; |
| struct smb_hdr *smb_buffer_response; |
| SESSION_SETUP_ANDX *pSMB; |
| SESSION_SETUP_ANDX *pSMBr; |
| char *bcc_ptr; |
| char *user; |
| char *domain; |
| int rc = 0; |
| int remaining_words = 0; |
| int bytes_returned = 0; |
| int len; |
| __u32 capabilities; |
| __u16 count; |
| |
| cFYI(1, ("In sesssetup")); |
| if(ses == NULL) |
| return -EINVAL; |
| user = ses->userName; |
| domain = ses->domainName; |
| smb_buffer = cifs_buf_get(); |
| if (smb_buffer == NULL) { |
| return -ENOMEM; |
| } |
| smb_buffer_response = smb_buffer; |
| pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; |
| |
| /* send SMBsessionSetup here */ |
| header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, |
| NULL /* no tCon exists yet */ , 13 /* wct */ ); |
| |
| smb_buffer->Mid = GetNextMid(ses->server); |
| pSMB->req_no_secext.AndXCommand = 0xFF; |
| pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); |
| pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); |
| |
| if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| |
| capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | |
| CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; |
| if (ses->capabilities & CAP_UNICODE) { |
| smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| capabilities |= CAP_UNICODE; |
| } |
| if (ses->capabilities & CAP_STATUS32) { |
| smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| capabilities |= CAP_STATUS32; |
| } |
| if (ses->capabilities & CAP_DFS) { |
| smb_buffer->Flags2 |= SMBFLG2_DFS; |
| capabilities |= CAP_DFS; |
| } |
| pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); |
| |
| pSMB->req_no_secext.CaseInsensitivePasswordLength = |
| cpu_to_le16(CIFS_SESSION_KEY_SIZE); |
| |
| pSMB->req_no_secext.CaseSensitivePasswordLength = |
| cpu_to_le16(CIFS_SESSION_KEY_SIZE); |
| bcc_ptr = pByteArea(smb_buffer); |
| memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); |
| bcc_ptr += CIFS_SESSION_KEY_SIZE; |
| memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); |
| bcc_ptr += CIFS_SESSION_KEY_SIZE; |
| |
| if (ses->capabilities & CAP_UNICODE) { |
| if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| } |
| if(user == NULL) |
| bytes_returned = 0; /* skill null user */ |
| else |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
| nls_codepage); |
| /* convert number of 16 bit words to bytes */ |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; /* trailing null */ |
| if (domain == NULL) |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, |
| "CIFS_LINUX_DOM", 32, nls_codepage); |
| else |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
| nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
| 32, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, |
| 32, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
| 64, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; |
| } else { |
| if(user != NULL) { |
| strncpy(bcc_ptr, user, 200); |
| bcc_ptr += strnlen(user, 200); |
| } |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| if (domain == NULL) { |
| strcpy(bcc_ptr, "CIFS_LINUX_DOM"); |
| bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; |
| } else { |
| strncpy(bcc_ptr, domain, 64); |
| bcc_ptr += strnlen(domain, 64); |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| } |
| strcpy(bcc_ptr, "Linux version "); |
| bcc_ptr += strlen("Linux version "); |
| strcpy(bcc_ptr, system_utsname.release); |
| bcc_ptr += strlen(system_utsname.release) + 1; |
| strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
| bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; |
| } |
| count = (long) bcc_ptr - (long) pByteArea(smb_buffer); |
| smb_buffer->smb_buf_length += count; |
| pSMB->req_no_secext.ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, |
| &bytes_returned, 1); |
| if (rc) { |
| /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ |
| } else if ((smb_buffer_response->WordCount == 3) |
| || (smb_buffer_response->WordCount == 4)) { |
| __u16 action = le16_to_cpu(pSMBr->resp.Action); |
| __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
| if (action & GUEST_LOGIN) |
| cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ |
| ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ |
| cFYI(1, ("UID = %d ", ses->Suid)); |
| /* response can have either 3 or 4 word count - Samba sends 3 */ |
| bcc_ptr = pByteArea(smb_buffer_response); |
| if ((pSMBr->resp.hdr.WordCount == 3) |
| || ((pSMBr->resp.hdr.WordCount == 4) |
| && (blob_len < pSMBr->resp.ByteCount))) { |
| if (pSMBr->resp.hdr.WordCount == 4) |
| bcc_ptr += blob_len; |
| |
| if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { |
| if ((long) (bcc_ptr) % 2) { |
| remaining_words = |
| (BCC(smb_buffer_response) - 1) /2; |
| bcc_ptr++; /* Unicode strings must be word aligned */ |
| } else { |
| remaining_words = |
| BCC(smb_buffer_response) / 2; |
| } |
| len = |
| UniStrnlen((wchar_t *) bcc_ptr, |
| remaining_words - 1); |
| /* We look for obvious messed up bcc or strings in response so we do not go off |
| the end since (at least) WIN2K and Windows XP have a major bug in not null |
| terminating last Unicode string in response */ |
| ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
| if(ses->serverOS == NULL) |
| goto sesssetup_nomem; |
| cifs_strfromUCS_le(ses->serverOS, |
| (__le16 *)bcc_ptr, len,nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| remaining_words -= len + 1; |
| ses->serverOS[2 * len] = 0; |
| ses->serverOS[1 + (2 * len)] = 0; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *)bcc_ptr, |
| remaining_words-1); |
| ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
| if(ses->serverNOS == NULL) |
| goto sesssetup_nomem; |
| cifs_strfromUCS_le(ses->serverNOS, |
| (__le16 *)bcc_ptr,len,nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| ses->serverNOS[2 * len] = 0; |
| ses->serverNOS[1 + (2 * len)] = 0; |
| if(strncmp(ses->serverNOS, |
| "NT LAN Manager 4",16) == 0) { |
| cFYI(1,("NT4 server")); |
| ses->flags |= CIFS_SES_NT4; |
| } |
| remaining_words -= len + 1; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
| /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
| ses->serverDomain = |
| kzalloc(2*(len+1),GFP_KERNEL); |
| if(ses->serverDomain == NULL) |
| goto sesssetup_nomem; |
| cifs_strfromUCS_le(ses->serverDomain, |
| (__le16 *)bcc_ptr,len,nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| ses->serverDomain[2*len] = 0; |
| ses->serverDomain[1+(2*len)] = 0; |
| } /* else no more room so create dummy domain string */ |
| else |
| ses->serverDomain = |
| kzalloc(2, GFP_KERNEL); |
| } else { /* no room so create dummy domain and NOS string */ |
| /* if these kcallocs fail not much we |
| can do, but better to not fail the |
| sesssetup itself */ |
| ses->serverDomain = |
| kzalloc(2, GFP_KERNEL); |
| ses->serverNOS = |
| kzalloc(2, GFP_KERNEL); |
| } |
| } else { /* ASCII */ |
| len = strnlen(bcc_ptr, 1024); |
| if (((long) bcc_ptr + len) - (long) |
| pByteArea(smb_buffer_response) |
| <= BCC(smb_buffer_response)) { |
| ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
| if(ses->serverOS == NULL) |
| goto sesssetup_nomem; |
| strncpy(ses->serverOS,bcc_ptr, len); |
| |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; /* null terminate the string */ |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
| if(ses->serverNOS == NULL) |
| goto sesssetup_nomem; |
| strncpy(ses->serverNOS, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
| if(ses->serverDomain == NULL) |
| goto sesssetup_nomem; |
| strncpy(ses->serverDomain, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| } else |
| cFYI(1, |
| ("Variable field of length %d extends beyond end of smb ", |
| len)); |
| } |
| } else { |
| cERROR(1, |
| (" Security Blob Length extends beyond end of SMB")); |
| } |
| } else { |
| cERROR(1, |
| (" Invalid Word count %d: ", |
| smb_buffer_response->WordCount)); |
| rc = -EIO; |
| } |
| sesssetup_nomem: /* do not return an error on nomem for the info strings, |
| since that could make reconnection harder, and |
| reconnection might be needed to free memory */ |
| if (smb_buffer) |
| cifs_buf_release(smb_buffer); |
| |
| return rc; |
| } |
| |
| static int |
| CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses, |
| char *SecurityBlob,int SecurityBlobLength, |
| const struct nls_table *nls_codepage) |
| { |
| struct smb_hdr *smb_buffer; |
| struct smb_hdr *smb_buffer_response; |
| SESSION_SETUP_ANDX *pSMB; |
| SESSION_SETUP_ANDX *pSMBr; |
| char *bcc_ptr; |
| char *user; |
| char *domain; |
| int rc = 0; |
| int remaining_words = 0; |
| int bytes_returned = 0; |
| int len; |
| __u32 capabilities; |
| __u16 count; |
| |
| cFYI(1, ("In spnego sesssetup ")); |
| if(ses == NULL) |
| return -EINVAL; |
| user = ses->userName; |
| domain = ses->domainName; |
| |
| smb_buffer = cifs_buf_get(); |
| if (smb_buffer == NULL) { |
| return -ENOMEM; |
| } |
| smb_buffer_response = smb_buffer; |
| pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; |
| |
| /* send SMBsessionSetup here */ |
| header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, |
| NULL /* no tCon exists yet */ , 12 /* wct */ ); |
| |
| smb_buffer->Mid = GetNextMid(ses->server); |
| pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
| pSMB->req.AndXCommand = 0xFF; |
| pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); |
| pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); |
| |
| if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| |
| capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | |
| CAP_EXTENDED_SECURITY; |
| if (ses->capabilities & CAP_UNICODE) { |
| smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| capabilities |= CAP_UNICODE; |
| } |
| if (ses->capabilities & CAP_STATUS32) { |
| smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| capabilities |= CAP_STATUS32; |
| } |
| if (ses->capabilities & CAP_DFS) { |
| smb_buffer->Flags2 |= SMBFLG2_DFS; |
| capabilities |= CAP_DFS; |
| } |
| pSMB->req.Capabilities = cpu_to_le32(capabilities); |
| |
| pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); |
| bcc_ptr = pByteArea(smb_buffer); |
| memcpy(bcc_ptr, SecurityBlob, SecurityBlobLength); |
| bcc_ptr += SecurityBlobLength; |
| |
| if (ses->capabilities & CAP_UNICODE) { |
| if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode strings */ |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| } |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */ |
| bcc_ptr += 2; /* trailing null */ |
| if (domain == NULL) |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, |
| "CIFS_LINUX_DOM", 32, nls_codepage); |
| else |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
| nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
| 32, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
| nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
| 64, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; |
| } else { |
| strncpy(bcc_ptr, user, 200); |
| bcc_ptr += strnlen(user, 200); |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| if (domain == NULL) { |
| strcpy(bcc_ptr, "CIFS_LINUX_DOM"); |
| bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; |
| } else { |
| strncpy(bcc_ptr, domain, 64); |
| bcc_ptr += strnlen(domain, 64); |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| } |
| strcpy(bcc_ptr, "Linux version "); |
| bcc_ptr += strlen("Linux version "); |
| strcpy(bcc_ptr, system_utsname.release); |
| bcc_ptr += strlen(system_utsname.release) + 1; |
| strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
| bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; |
| } |
| count = (long) bcc_ptr - (long) pByteArea(smb_buffer); |
| smb_buffer->smb_buf_length += count; |
| pSMB->req.ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, |
| &bytes_returned, 1); |
| if (rc) { |
| /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ |
| } else if ((smb_buffer_response->WordCount == 3) |
| || (smb_buffer_response->WordCount == 4)) { |
| __u16 action = le16_to_cpu(pSMBr->resp.Action); |
| __u16 blob_len = |
| le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
| if (action & GUEST_LOGIN) |
| cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ |
| if (ses) { |
| ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ |
| cFYI(1, ("UID = %d ", ses->Suid)); |
| bcc_ptr = pByteArea(smb_buffer_response); /* response can have either 3 or 4 word count - Samba sends 3 */ |
| |
| /* BB Fix below to make endian neutral !! */ |
| |
| if ((pSMBr->resp.hdr.WordCount == 3) |
| || ((pSMBr->resp.hdr.WordCount == 4) |
| && (blob_len < |
| pSMBr->resp.ByteCount))) { |
| if (pSMBr->resp.hdr.WordCount == 4) { |
| bcc_ptr += |
| blob_len; |
| cFYI(1, |
| ("Security Blob Length %d ", |
| blob_len)); |
| } |
| |
| if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { |
| if ((long) (bcc_ptr) % 2) { |
| remaining_words = |
| (BCC(smb_buffer_response) |
| - 1) / 2; |
| bcc_ptr++; /* Unicode strings must be word aligned */ |
| } else { |
| remaining_words = |
| BCC |
| (smb_buffer_response) / 2; |
| } |
| len = |
| UniStrnlen((wchar_t *) bcc_ptr, |
| remaining_words - 1); |
| /* We look for obvious messed up bcc or strings in response so we do not go off |
| the end since (at least) WIN2K and Windows XP have a major bug in not null |
| terminating last Unicode string in response */ |
| ses->serverOS = |
| kzalloc(2 * (len + 1), GFP_KERNEL); |
| cifs_strfromUCS_le(ses->serverOS, |
| (__le16 *) |
| bcc_ptr, len, |
| nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| remaining_words -= len + 1; |
| ses->serverOS[2 * len] = 0; |
| ses->serverOS[1 + (2 * len)] = 0; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *)bcc_ptr, |
| remaining_words |
| - 1); |
| ses->serverNOS = |
| kzalloc(2 * (len + 1), |
| GFP_KERNEL); |
| cifs_strfromUCS_le(ses->serverNOS, |
| (__le16 *)bcc_ptr, |
| len, |
| nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| ses->serverNOS[2 * len] = 0; |
| ses->serverNOS[1 + (2 * len)] = 0; |
| remaining_words -= len + 1; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
| /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
| ses->serverDomain = kzalloc(2*(len+1),GFP_KERNEL); |
| cifs_strfromUCS_le(ses->serverDomain, |
| (__le16 *)bcc_ptr, |
| len, nls_codepage); |
| bcc_ptr += 2*(len+1); |
| ses->serverDomain[2*len] = 0; |
| ses->serverDomain[1+(2*len)] = 0; |
| } /* else no more room so create dummy domain string */ |
| else |
| ses->serverDomain = |
| kzalloc(2,GFP_KERNEL); |
| } else { /* no room so create dummy domain and NOS string */ |
| ses->serverDomain = kzalloc(2, GFP_KERNEL); |
| ses->serverNOS = kzalloc(2, GFP_KERNEL); |
| } |
| } else { /* ASCII */ |
| |
| len = strnlen(bcc_ptr, 1024); |
| if (((long) bcc_ptr + len) - (long) |
| pByteArea(smb_buffer_response) |
| <= BCC(smb_buffer_response)) { |
| ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
| strncpy(ses->serverOS, bcc_ptr, len); |
| |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; /* null terminate the string */ |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
| strncpy(ses->serverNOS, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverDomain = kzalloc(len + 1, GFP_KERNEL); |
| strncpy(ses->serverDomain, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| } else |
| cFYI(1, |
| ("Variable field of length %d extends beyond end of smb ", |
| len)); |
| } |
| } else { |
| cERROR(1, |
| (" Security Blob Length extends beyond end of SMB")); |
| } |
| } else { |
| cERROR(1, ("No session structure passed in.")); |
| } |
| } else { |
| cERROR(1, |
| (" Invalid Word count %d: ", |
| smb_buffer_response->WordCount)); |
| rc = -EIO; |
| } |
| |
| if (smb_buffer) |
| cifs_buf_release(smb_buffer); |
| |
| return rc; |
| } |
| |
| static int |
| CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, |
| struct cifsSesInfo *ses, int * pNTLMv2_flag, |
| const struct nls_table *nls_codepage) |
| { |
| struct smb_hdr *smb_buffer; |
| struct smb_hdr *smb_buffer_response; |
| SESSION_SETUP_ANDX *pSMB; |
| SESSION_SETUP_ANDX *pSMBr; |
| char *bcc_ptr; |
| char *domain; |
| int rc = 0; |
| int remaining_words = 0; |
| int bytes_returned = 0; |
| int len; |
| int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); |
| PNEGOTIATE_MESSAGE SecurityBlob; |
| PCHALLENGE_MESSAGE SecurityBlob2; |
| __u32 negotiate_flags, capabilities; |
| __u16 count; |
| |
| cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
| if(ses == NULL) |
| return -EINVAL; |
| domain = ses->domainName; |
| *pNTLMv2_flag = FALSE; |
| smb_buffer = cifs_buf_get(); |
| if (smb_buffer == NULL) { |
| return -ENOMEM; |
| } |
| smb_buffer_response = smb_buffer; |
| pSMB = (SESSION_SETUP_ANDX *) smb_buffer; |
| pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; |
| |
| /* send SMBsessionSetup here */ |
| header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, |
| NULL /* no tCon exists yet */ , 12 /* wct */ ); |
| |
| smb_buffer->Mid = GetNextMid(ses->server); |
| pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
| pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
| |
| pSMB->req.AndXCommand = 0xFF; |
| pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); |
| pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); |
| |
| if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| |
| capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | |
| CAP_EXTENDED_SECURITY; |
| if (ses->capabilities & CAP_UNICODE) { |
| smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| capabilities |= CAP_UNICODE; |
| } |
| if (ses->capabilities & CAP_STATUS32) { |
| smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| capabilities |= CAP_STATUS32; |
| } |
| if (ses->capabilities & CAP_DFS) { |
| smb_buffer->Flags2 |= SMBFLG2_DFS; |
| capabilities |= CAP_DFS; |
| } |
| pSMB->req.Capabilities = cpu_to_le32(capabilities); |
| |
| bcc_ptr = (char *) &pSMB->req.SecurityBlob; |
| SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; |
| strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
| SecurityBlob->MessageType = NtLmNegotiate; |
| negotiate_flags = |
| NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | |
| NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
| NTLMSSP_NEGOTIATE_56 | |
| /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
| if(sign_CIFS_PDUs) |
| negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
| if(ntlmv2_support) |
| negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
| /* setup pointers to domain name and workstation name */ |
| bcc_ptr += SecurityBlobLength; |
| |
| SecurityBlob->WorkstationName.Buffer = 0; |
| SecurityBlob->WorkstationName.Length = 0; |
| SecurityBlob->WorkstationName.MaximumLength = 0; |
| |
| /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
| along with username on auth request (ie the response to challenge) */ |
| SecurityBlob->DomainName.Buffer = 0; |
| SecurityBlob->DomainName.Length = 0; |
| SecurityBlob->DomainName.MaximumLength = 0; |
| if (ses->capabilities & CAP_UNICODE) { |
| if ((long) bcc_ptr % 2) { |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| } |
| |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
| 32, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
| nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; /* null terminate Linux version */ |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
| 64, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| *(bcc_ptr + 1) = 0; |
| *(bcc_ptr + 2) = 0; |
| bcc_ptr += 2; /* null terminate network opsys string */ |
| *(bcc_ptr + 1) = 0; |
| *(bcc_ptr + 2) = 0; |
| bcc_ptr += 2; /* null domain */ |
| } else { /* ASCII */ |
| strcpy(bcc_ptr, "Linux version "); |
| bcc_ptr += strlen("Linux version "); |
| strcpy(bcc_ptr, system_utsname.release); |
| bcc_ptr += strlen(system_utsname.release) + 1; |
| strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
| bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; |
| bcc_ptr++; /* empty domain field */ |
| *bcc_ptr = 0; |
| } |
| SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); |
| pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); |
| count = (long) bcc_ptr - (long) pByteArea(smb_buffer); |
| smb_buffer->smb_buf_length += count; |
| pSMB->req.ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, |
| &bytes_returned, 1); |
| |
| if (smb_buffer_response->Status.CifsError == |
| cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) |
| rc = 0; |
| |
| if (rc) { |
| /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ |
| } else if ((smb_buffer_response->WordCount == 3) |
| || (smb_buffer_response->WordCount == 4)) { |
| __u16 action = le16_to_cpu(pSMBr->resp.Action); |
| __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
| |
| if (action & GUEST_LOGIN) |
| cFYI(1, (" Guest login")); |
| /* Do we want to set anything in SesInfo struct when guest login? */ |
| |
| bcc_ptr = pByteArea(smb_buffer_response); |
| /* response can have either 3 or 4 word count - Samba sends 3 */ |
| |
| SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; |
| if (SecurityBlob2->MessageType != NtLmChallenge) { |
| cFYI(1, |
| ("Unexpected NTLMSSP message type received %d", |
| SecurityBlob2->MessageType)); |
| } else if (ses) { |
| ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
| cFYI(1, ("UID = %d", ses->Suid)); |
| if ((pSMBr->resp.hdr.WordCount == 3) |
| || ((pSMBr->resp.hdr.WordCount == 4) |
| && (blob_len < |
| pSMBr->resp.ByteCount))) { |
| |
| if (pSMBr->resp.hdr.WordCount == 4) { |
| bcc_ptr += blob_len; |
| cFYI(1, ("Security Blob Length %d", |
| blob_len)); |
| } |
| |
| cFYI(1, ("NTLMSSP Challenge rcvd")); |
| |
| memcpy(ses->server->cryptKey, |
| SecurityBlob2->Challenge, |
| CIFS_CRYPTO_KEY_SIZE); |
| if(SecurityBlob2->NegotiateFlags & |
| cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
| *pNTLMv2_flag = TRUE; |
| |
| if((SecurityBlob2->NegotiateFlags & |
| cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) |
| || (sign_CIFS_PDUs > 1)) |
| ses->server->secMode |= |
| SECMODE_SIGN_REQUIRED; |
| if ((SecurityBlob2->NegotiateFlags & |
| cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
| ses->server->secMode |= |
| SECMODE_SIGN_ENABLED; |
| |
| if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { |
| if ((long) (bcc_ptr) % 2) { |
| remaining_words = |
| (BCC(smb_buffer_response) |
| - 1) / 2; |
| bcc_ptr++; /* Unicode strings must be word aligned */ |
| } else { |
| remaining_words = |
| BCC |
| (smb_buffer_response) / 2; |
| } |
| len = |
| UniStrnlen((wchar_t *) bcc_ptr, |
| remaining_words - 1); |
| /* We look for obvious messed up bcc or strings in response so we do not go off |
| the end since (at least) WIN2K and Windows XP have a major bug in not null |
| terminating last Unicode string in response */ |
| ses->serverOS = |
| kzalloc(2 * (len + 1), GFP_KERNEL); |
| cifs_strfromUCS_le(ses->serverOS, |
| (__le16 *) |
| bcc_ptr, len, |
| nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| remaining_words -= len + 1; |
| ses->serverOS[2 * len] = 0; |
| ses->serverOS[1 + (2 * len)] = 0; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *) |
| bcc_ptr, |
| remaining_words |
| - 1); |
| ses->serverNOS = |
| kzalloc(2 * (len + 1), |
| GFP_KERNEL); |
| cifs_strfromUCS_le(ses-> |
| serverNOS, |
| (__le16 *) |
| bcc_ptr, |
| len, |
| nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| ses->serverNOS[2 * len] = 0; |
| ses->serverNOS[1 + |
| (2 * len)] = 0; |
| remaining_words -= len + 1; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
| /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
| ses->serverDomain = |
| kzalloc(2 * |
| (len + |
| 1), |
| GFP_KERNEL); |
| cifs_strfromUCS_le |
| (ses->serverDomain, |
| (__le16 *)bcc_ptr, |
| len, nls_codepage); |
| bcc_ptr += |
| 2 * (len + 1); |
| ses->serverDomain[2*len] |
| = 0; |
| ses->serverDomain |
| [1 + (2 * len)] |
| = 0; |
| } /* else no more room so create dummy domain string */ |
| else |
| ses->serverDomain = |
| kzalloc(2, |
| GFP_KERNEL); |
| } else { /* no room so create dummy domain and NOS string */ |
| ses->serverDomain = |
| kzalloc(2, GFP_KERNEL); |
| ses->serverNOS = |
| kzalloc(2, GFP_KERNEL); |
| } |
| } else { /* ASCII */ |
| len = strnlen(bcc_ptr, 1024); |
| if (((long) bcc_ptr + len) - (long) |
| pByteArea(smb_buffer_response) |
| <= BCC(smb_buffer_response)) { |
| ses->serverOS = |
| kzalloc(len + 1, |
| GFP_KERNEL); |
| strncpy(ses->serverOS, |
| bcc_ptr, len); |
| |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; /* null terminate string */ |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverNOS = |
| kzalloc(len + 1, |
| GFP_KERNEL); |
| strncpy(ses->serverNOS, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverDomain = |
| kzalloc(len + 1, |
| GFP_KERNEL); |
| strncpy(ses->serverDomain, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| } else |
| cFYI(1, |
| ("Variable field of length %d extends beyond end of smb", |
| len)); |
| } |
| } else { |
| cERROR(1, |
| (" Security Blob Length extends beyond end of SMB")); |
| } |
| } else { |
| cERROR(1, ("No session structure passed in.")); |
| } |
| } else { |
| cERROR(1, |
| (" Invalid Word count %d:", |
| smb_buffer_response->WordCount)); |
| rc = -EIO; |
| } |
| |
| if (smb_buffer) |
| cifs_buf_release(smb_buffer); |
| |
| return rc; |
| } |
| static int |
| CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, |
| char *ntlm_session_key, int ntlmv2_flag, |
| const struct nls_table *nls_codepage) |
| { |
| struct smb_hdr *smb_buffer; |
| struct smb_hdr *smb_buffer_response; |
| SESSION_SETUP_ANDX *pSMB; |
| SESSION_SETUP_ANDX *pSMBr; |
| char *bcc_ptr; |
| char *user; |
| char *domain; |
| int rc = 0; |
| int remaining_words = 0; |
| int bytes_returned = 0; |
| int len; |
| int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); |
| PAUTHENTICATE_MESSAGE SecurityBlob; |
| __u32 negotiate_flags, capabilities; |
| __u16 count; |
| |
| cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); |
| if(ses == NULL) |
| return -EINVAL; |
| user = ses->userName; |
| domain = ses->domainName; |
| smb_buffer = cifs_buf_get(); |
| if (smb_buffer == NULL) { |
| return -ENOMEM; |
| } |
| smb_buffer_response = smb_buffer; |
| pSMB = (SESSION_SETUP_ANDX *) smb_buffer; |
| pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; |
| |
| /* send SMBsessionSetup here */ |
| header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, |
| NULL /* no tCon exists yet */ , 12 /* wct */ ); |
| |
| smb_buffer->Mid = GetNextMid(ses->server); |
| pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
| pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
| pSMB->req.AndXCommand = 0xFF; |
| pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); |
| pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); |
| |
| pSMB->req.hdr.Uid = ses->Suid; |
| |
| if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| |
| capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | |
| CAP_EXTENDED_SECURITY; |
| if (ses->capabilities & CAP_UNICODE) { |
| smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| capabilities |= CAP_UNICODE; |
| } |
| if (ses->capabilities & CAP_STATUS32) { |
| smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| capabilities |= CAP_STATUS32; |
| } |
| if (ses->capabilities & CAP_DFS) { |
| smb_buffer->Flags2 |= SMBFLG2_DFS; |
| capabilities |= CAP_DFS; |
| } |
| pSMB->req.Capabilities = cpu_to_le32(capabilities); |
| |
| bcc_ptr = (char *) &pSMB->req.SecurityBlob; |
| SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; |
| strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
| SecurityBlob->MessageType = NtLmAuthenticate; |
| bcc_ptr += SecurityBlobLength; |
| negotiate_flags = |
| NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
| NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | |
| 0x80000000 | NTLMSSP_NEGOTIATE_128; |
| if(sign_CIFS_PDUs) |
| negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
| if(ntlmv2_flag) |
| negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
| |
| /* setup pointers to domain name and workstation name */ |
| |
| SecurityBlob->WorkstationName.Buffer = 0; |
| SecurityBlob->WorkstationName.Length = 0; |
| SecurityBlob->WorkstationName.MaximumLength = 0; |
| SecurityBlob->SessionKey.Length = 0; |
| SecurityBlob->SessionKey.MaximumLength = 0; |
| SecurityBlob->SessionKey.Buffer = 0; |
| |
| SecurityBlob->LmChallengeResponse.Length = 0; |
| SecurityBlob->LmChallengeResponse.MaximumLength = 0; |
| SecurityBlob->LmChallengeResponse.Buffer = 0; |
| |
| SecurityBlob->NtChallengeResponse.Length = |
| cpu_to_le16(CIFS_SESSION_KEY_SIZE); |
| SecurityBlob->NtChallengeResponse.MaximumLength = |
| cpu_to_le16(CIFS_SESSION_KEY_SIZE); |
| memcpy(bcc_ptr, ntlm_session_key, CIFS_SESSION_KEY_SIZE); |
| SecurityBlob->NtChallengeResponse.Buffer = |
| cpu_to_le32(SecurityBlobLength); |
| SecurityBlobLength += CIFS_SESSION_KEY_SIZE; |
| bcc_ptr += CIFS_SESSION_KEY_SIZE; |
| |
| if (ses->capabilities & CAP_UNICODE) { |
| if (domain == NULL) { |
| SecurityBlob->DomainName.Buffer = 0; |
| SecurityBlob->DomainName.Length = 0; |
| SecurityBlob->DomainName.MaximumLength = 0; |
| } else { |
| __u16 len = |
| cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
| nls_codepage); |
| len *= 2; |
| SecurityBlob->DomainName.MaximumLength = |
| cpu_to_le16(len); |
| SecurityBlob->DomainName.Buffer = |
| cpu_to_le32(SecurityBlobLength); |
| bcc_ptr += len; |
| SecurityBlobLength += len; |
| SecurityBlob->DomainName.Length = |
| cpu_to_le16(len); |
| } |
| if (user == NULL) { |
| SecurityBlob->UserName.Buffer = 0; |
| SecurityBlob->UserName.Length = 0; |
| SecurityBlob->UserName.MaximumLength = 0; |
| } else { |
| __u16 len = |
| cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
| nls_codepage); |
| len *= 2; |
| SecurityBlob->UserName.MaximumLength = |
| cpu_to_le16(len); |
| SecurityBlob->UserName.Buffer = |
| cpu_to_le32(SecurityBlobLength); |
| bcc_ptr += len; |
| SecurityBlobLength += len; |
| SecurityBlob->UserName.Length = |
| cpu_to_le16(len); |
| } |
| |
| /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
| SecurityBlob->WorkstationName.Length *= 2; |
| SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); |
| SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); |
| bcc_ptr += SecurityBlob->WorkstationName.Length; |
| SecurityBlobLength += SecurityBlob->WorkstationName.Length; |
| SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ |
| |
| if ((long) bcc_ptr % 2) { |
| *bcc_ptr = 0; |
| bcc_ptr++; |
| } |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
| 32, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
| nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| bcc_ptr += 2; /* null term version string */ |
| bytes_returned = |
| cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
| 64, nls_codepage); |
| bcc_ptr += 2 * bytes_returned; |
| *(bcc_ptr + 1) = 0; |
| *(bcc_ptr + 2) = 0; |
| bcc_ptr += 2; /* null terminate network opsys string */ |
| *(bcc_ptr + 1) = 0; |
| *(bcc_ptr + 2) = 0; |
| bcc_ptr += 2; /* null domain */ |
| } else { /* ASCII */ |
| if (domain == NULL) { |
| SecurityBlob->DomainName.Buffer = 0; |
| SecurityBlob->DomainName.Length = 0; |
| SecurityBlob->DomainName.MaximumLength = 0; |
| } else { |
| __u16 len; |
| negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
| strncpy(bcc_ptr, domain, 63); |
| len = strnlen(domain, 64); |
| SecurityBlob->DomainName.MaximumLength = |
| cpu_to_le16(len); |
| SecurityBlob->DomainName.Buffer = |
| cpu_to_le32(SecurityBlobLength); |
| bcc_ptr += len; |
| SecurityBlobLength += len; |
| SecurityBlob->DomainName.Length = cpu_to_le16(len); |
| } |
| if (user == NULL) { |
| SecurityBlob->UserName.Buffer = 0; |
| SecurityBlob->UserName.Length = 0; |
| SecurityBlob->UserName.MaximumLength = 0; |
| } else { |
| __u16 len; |
| strncpy(bcc_ptr, user, 63); |
| len = strnlen(user, 64); |
| SecurityBlob->UserName.MaximumLength = |
| cpu_to_le16(len); |
| SecurityBlob->UserName.Buffer = |
| cpu_to_le32(SecurityBlobLength); |
| bcc_ptr += len; |
| SecurityBlobLength += len; |
| SecurityBlob->UserName.Length = cpu_to_le16(len); |
| } |
| /* BB fill in our workstation name if known BB */ |
| |
| strcpy(bcc_ptr, "Linux version "); |
| bcc_ptr += strlen("Linux version "); |
| strcpy(bcc_ptr, system_utsname.release); |
| bcc_ptr += strlen(system_utsname.release) + 1; |
| strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
| bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; |
| bcc_ptr++; /* null domain */ |
| *bcc_ptr = 0; |
| } |
| SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); |
| pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); |
| count = (long) bcc_ptr - (long) pByteArea(smb_buffer); |
| smb_buffer->smb_buf_length += count; |
| pSMB->req.ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, |
| &bytes_returned, 1); |
| if (rc) { |
| /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ |
| } else if ((smb_buffer_response->WordCount == 3) |
| || (smb_buffer_response->WordCount == 4)) { |
| __u16 action = le16_to_cpu(pSMBr->resp.Action); |
| __u16 blob_len = |
| le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
| if (action & GUEST_LOGIN) |
| cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ |
| /* if(SecurityBlob2->MessageType != NtLm??){ |
| cFYI("Unexpected message type on auth response is %d ")); |
| } */ |
| if (ses) { |
| cFYI(1, |
| ("Does UID on challenge %d match auth response UID %d ", |
| ses->Suid, smb_buffer_response->Uid)); |
| ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ |
| bcc_ptr = pByteArea(smb_buffer_response); |
| /* response can have either 3 or 4 word count - Samba sends 3 */ |
| if ((pSMBr->resp.hdr.WordCount == 3) |
| || ((pSMBr->resp.hdr.WordCount == 4) |
| && (blob_len < |
| pSMBr->resp.ByteCount))) { |
| if (pSMBr->resp.hdr.WordCount == 4) { |
| bcc_ptr += |
| blob_len; |
| cFYI(1, |
| ("Security Blob Length %d ", |
| blob_len)); |
| } |
| |
| cFYI(1, |
| ("NTLMSSP response to Authenticate ")); |
| |
| if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { |
| if ((long) (bcc_ptr) % 2) { |
| remaining_words = |
| (BCC(smb_buffer_response) |
| - 1) / 2; |
| bcc_ptr++; /* Unicode strings must be word aligned */ |
| } else { |
| remaining_words = BCC(smb_buffer_response) / 2; |
| } |
| len = |
| UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); |
| /* We look for obvious messed up bcc or strings in response so we do not go off |
| the end since (at least) WIN2K and Windows XP have a major bug in not null |
| terminating last Unicode string in response */ |
| ses->serverOS = |
| kzalloc(2 * (len + 1), GFP_KERNEL); |
| cifs_strfromUCS_le(ses->serverOS, |
| (__le16 *) |
| bcc_ptr, len, |
| nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| remaining_words -= len + 1; |
| ses->serverOS[2 * len] = 0; |
| ses->serverOS[1 + (2 * len)] = 0; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *) |
| bcc_ptr, |
| remaining_words |
| - 1); |
| ses->serverNOS = |
| kzalloc(2 * (len + 1), |
| GFP_KERNEL); |
| cifs_strfromUCS_le(ses-> |
| serverNOS, |
| (__le16 *) |
| bcc_ptr, |
| len, |
| nls_codepage); |
| bcc_ptr += 2 * (len + 1); |
| ses->serverNOS[2 * len] = 0; |
| ses->serverNOS[1+(2*len)] = 0; |
| remaining_words -= len + 1; |
| if (remaining_words > 0) { |
| len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
| /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
| ses->serverDomain = |
| kzalloc(2 * |
| (len + |
| 1), |
| GFP_KERNEL); |
| cifs_strfromUCS_le |
| (ses-> |
| serverDomain, |
| (__le16 *) |
| bcc_ptr, len, |
| nls_codepage); |
| bcc_ptr += |
| 2 * (len + 1); |
| ses-> |
| serverDomain[2 |
| * len] |
| = 0; |
| ses-> |
| serverDomain[1 |
| + |
| (2 |
| * |
| len)] |
| = 0; |
| } /* else no more room so create dummy domain string */ |
| else |
| ses->serverDomain = kzalloc(2,GFP_KERNEL); |
| } else { /* no room so create dummy domain and NOS string */ |
| ses->serverDomain = kzalloc(2, GFP_KERNEL); |
| ses->serverNOS = kzalloc(2, GFP_KERNEL); |
| } |
| } else { /* ASCII */ |
| len = strnlen(bcc_ptr, 1024); |
| if (((long) bcc_ptr + len) - |
| (long) pByteArea(smb_buffer_response) |
| <= BCC(smb_buffer_response)) { |
| ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
| strncpy(ses->serverOS,bcc_ptr, len); |
| |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; /* null terminate the string */ |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
| strncpy(ses->serverNOS, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| |
| len = strnlen(bcc_ptr, 1024); |
| ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
| strncpy(ses->serverDomain, bcc_ptr, len); |
| bcc_ptr += len; |
| bcc_ptr[0] = 0; |
| bcc_ptr++; |
| } else |
| cFYI(1, |
| ("Variable field of length %d extends beyond end of smb ", |
| len)); |
| } |
| } else { |
| cERROR(1, |
| (" Security Blob Length extends beyond end of SMB")); |
| } |
| } else { |
| cERROR(1, ("No session structure passed in.")); |
| } |
| } else { |
| cERROR(1, |
| (" Invalid Word count %d: ", |
| smb_buffer_response->WordCount)); |
| rc = -EIO; |
| } |
| |
| if (smb_buffer) |
| cifs_buf_release(smb_buffer); |
| |
| return rc; |
| } |
| |
| int |
| CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, |
| const char *tree, struct cifsTconInfo *tcon, |
| const struct nls_table *nls_codepage) |
| { |
| struct smb_hdr *smb_buffer; |
| struct smb_hdr *smb_buffer_response; |
| TCONX_REQ *pSMB; |
| TCONX_RSP *pSMBr; |
| unsigned char *bcc_ptr; |
| int rc = 0; |
| int length; |
| __u16 count; |
| |
| if (ses == NULL) |
| return -EIO; |
| |
| smb_buffer = cifs_buf_get(); |
| if (smb_buffer == NULL) { |
| return -ENOMEM; |
| } |
| smb_buffer_response = smb_buffer; |
| |
| header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, |
| NULL /*no tid */ , 4 /*wct */ ); |
| |
| smb_buffer->Mid = GetNextMid(ses->server); |
| smb_buffer->Uid = ses->Suid; |
| pSMB = (TCONX_REQ *) smb_buffer; |
| pSMBr = (TCONX_RSP *) smb_buffer_response; |
| |
| pSMB->AndXCommand = 0xFF; |
| pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); |
| bcc_ptr = &pSMB->Password[0]; |
| if((ses->server->secMode) & SECMODE_USER) { |
| pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
| bcc_ptr++; /* skip password */ |
| } else { |
| pSMB->PasswordLength = cpu_to_le16(CIFS_SESSION_KEY_SIZE); |
| /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
| specified as required (when that support is added to |
| the vfs in the future) as only NTLM or the much |
| weaker LANMAN (which we do not send) is accepted |
| by Samba (not sure whether other servers allow |
| NTLMv2 password here) */ |
| SMBNTencrypt(ses->password, |
| ses->server->cryptKey, |
| bcc_ptr); |
| |
| bcc_ptr += CIFS_SESSION_KEY_SIZE; |
| *bcc_ptr = 0; |
| bcc_ptr++; /* align */ |
| } |
| |
| if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| |
| if (ses->capabilities & CAP_STATUS32) { |
| smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| } |
| if (ses->capabilities & CAP_DFS) { |
| smb_buffer->Flags2 |= SMBFLG2_DFS; |
| } |
| if (ses->capabilities & CAP_UNICODE) { |
| smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| length = |
| cifs_strtoUCS((__le16 *) bcc_ptr, tree, 100, nls_codepage); |
| bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */ |
| bcc_ptr += 2; /* skip trailing null */ |
| } else { /* ASCII */ |
| strcpy(bcc_ptr, tree); |
| bcc_ptr += strlen(tree) + 1; |
| } |
| strcpy(bcc_ptr, "?????"); |
| bcc_ptr += strlen("?????"); |
| bcc_ptr += 1; |
| count = bcc_ptr - &pSMB->Password[0]; |
| pSMB->hdr.smb_buf_length += count; |
| pSMB->ByteCount = cpu_to_le16(count); |
| |
| rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); |
| |
| /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ |
| /* above now done in SendReceive */ |
| if ((rc == 0) && (tcon != NULL)) { |
| tcon->tidStatus = CifsGood; |
| tcon->tid = smb_buffer_response->Tid; |
| bcc_ptr = pByteArea(smb_buffer_response); |
| length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); |
| /* skip service field (NB: this field is always ASCII) */ |
| bcc_ptr += length + 1; |
| strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
| if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { |
| length = UniStrnlen((wchar_t *) bcc_ptr, 512); |
| if ((bcc_ptr + (2 * length)) - |
| pByteArea(smb_buffer_response) <= |
| BCC(smb_buffer_response)) { |
| kfree(tcon->nativeFileSystem); |
| tcon->nativeFileSystem = |
| kzalloc(length + 2, GFP_KERNEL); |
| cifs_strfromUCS_le(tcon->nativeFileSystem, |
| (__le16 *) bcc_ptr, |
| length, nls_codepage); |
| bcc_ptr += 2 * length; |
| bcc_ptr[0] = 0; /* null terminate the string */ |
| bcc_ptr[1] = 0; |
| bcc_ptr += 2; |
| } |
| /* else do not bother copying these informational fields */ |
| } else { |
| length = strnlen(bcc_ptr, 1024); |
| if ((bcc_ptr + length) - |
| pByteArea(smb_buffer_response) <= |
| BCC(smb_buffer_response)) { |
| kfree(tcon->nativeFileSystem); |
| tcon->nativeFileSystem = |
| kzalloc(length + 1, GFP_KERNEL); |
| strncpy(tcon->nativeFileSystem, bcc_ptr, |
| length); |
| } |
| /* else do not bother copying these informational fields */ |
| } |
| tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
| cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
| } else if ((rc == 0) && tcon == NULL) { |
| /* all we need to save for IPC$ connection */ |
| ses->ipc_tid = smb_buffer_response->Tid; |
| } |
| |
| if (smb_buffer) |
| cifs_buf_release(smb_buffer); |
| return rc; |
| } |
| |
| int |
| cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) |
| { |
| int rc = 0; |
| int xid; |
| struct cifsSesInfo *ses = NULL; |
| struct task_struct *cifsd_task; |
| |
| xid = GetXid(); |
| |
| if (cifs_sb->tcon) { |
| ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ |
| rc = CIFSSMBTDis(xid, cifs_sb->tcon); |
| if (rc == -EBUSY) { |
| FreeXid(xid); |
| return 0; |
| } |
| tconInfoFree(cifs_sb->tcon); |
| if ((ses) && (ses->server)) { |
| /* save off task so we do not refer to ses later */ |
| cifsd_task = ses->server->tsk; |
| cFYI(1, ("About to do SMBLogoff ")); |
| rc = CIFSSMBLogoff(xid, ses); |
| if (rc == -EBUSY) { |
| FreeXid(xid); |
| return 0; |
| } else if (rc == -ESHUTDOWN) { |
| cFYI(1,("Waking up socket by sending it signal")); |
| if(cifsd_task) { |
| send_sig(SIGKILL,cifsd_task,1); |
| wait_for_completion(&cifsd_complete); |
| } |
| rc = 0; |
| } /* else - we have an smb session |
| left on this socket do not kill cifsd */ |
| } else |
| cFYI(1, ("No session or bad tcon")); |
| } |
| |
| cifs_sb->tcon = NULL; |
| if (ses) |
| schedule_timeout_interruptible(msecs_to_jiffies(500)); |
| if (ses) |
| sesInfoFree(ses); |
| |
| FreeXid(xid); |
| return rc; /* BB check if we should always return zero here */ |
| } |
| |
| int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, |
| struct nls_table * nls_info) |
| { |
| int rc = 0; |
| char ntlm_session_key[CIFS_SESSION_KEY_SIZE]; |
| int ntlmv2_flag = FALSE; |
| int first_time = 0; |
| |
| /* what if server changes its buffer size after dropping the session? */ |
| if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
| rc = CIFSSMBNegotiate(xid, pSesInfo); |
| if(rc == -EAGAIN) /* retry only once on 1st time connection */ { |
| rc = CIFSSMBNegotiate(xid, pSesInfo); |
| if(rc == -EAGAIN) |
| rc = -EHOSTDOWN; |
| } |
| if(rc == 0) { |
| spin_lock(&GlobalMid_Lock); |
| if(pSesInfo->server->tcpStatus != CifsExiting) |
| pSesInfo->server->tcpStatus = CifsGood; |
| else |
| rc = -EHOSTDOWN; |
| spin_unlock(&GlobalMid_Lock); |
| |
| } |
| first_time = 1; |
| } |
| if (!rc) { |
| pSesInfo->capabilities = pSesInfo->server->capabilities; |
| if(linuxExtEnabled == 0) |
| pSesInfo->capabilities &= (~CAP_UNIX); |
| /* pSesInfo->sequence_number = 0;*/ |
| cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
| pSesInfo->server->secMode, |
| pSesInfo->server->capabilities, |
| pSesInfo->server->timeZone)); |
| if (extended_security |
| && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) |
| && (pSesInfo->server->secType == NTLMSSP)) { |
| cFYI(1, ("New style sesssetup")); |
| rc = CIFSSpnegoSessSetup(xid, pSesInfo, |
| NULL /* security blob */, |
| 0 /* blob length */, |
| nls_info); |
| } else if (extended_security |
| && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) |
| && (pSesInfo->server->secType == RawNTLMSSP)) { |
| cFYI(1, ("NTLMSSP sesssetup")); |
| rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
| pSesInfo, |
| &ntlmv2_flag, |
| nls_info); |
| if (!rc) { |
| if(ntlmv2_flag) { |
| char * v2_response; |
| cFYI(1,("Can use more secure NTLM version 2 password hash")); |
| if(CalcNTLMv2_partial_mac_key(pSesInfo, |
| nls_info)) { |
| rc = -ENOMEM; |
| goto ss_err_exit; |
| } else |
| v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); |
| if(v2_response) { |
| CalcNTLMv2_response(pSesInfo,v2_response); |
| /* if(first_time) |
| cifs_calculate_ntlmv2_mac_key( |
| pSesInfo->server->mac_signing_key, |
| response, ntlm_session_key, */ |
| kfree(v2_response); |
| /* BB Put dummy sig in SessSetup PDU? */ |
| } else { |
| rc = -ENOMEM; |
| goto ss_err_exit; |
| } |
| |
| } else { |
| SMBNTencrypt(pSesInfo->password, |
| pSesInfo->server->cryptKey, |
| ntlm_session_key); |
| |
| if(first_time) |
| cifs_calculate_mac_key( |
| pSesInfo->server->mac_signing_key, |
| ntlm_session_key, |
| pSesInfo->password); |
| } |
| /* for better security the weaker lanman hash not sent |
| in AuthSessSetup so we no longer calculate it */ |
| |
| rc = CIFSNTLMSSPAuthSessSetup(xid, |
| pSesInfo, |
| ntlm_session_key, |
| ntlmv2_flag, |
| nls_info); |
| } |
| } else { /* old style NTLM 0.12 session setup */ |
| SMBNTencrypt(pSesInfo->password, |
| pSesInfo->server->cryptKey, |
| ntlm_session_key); |
| |
| if(first_time) |
| cifs_calculate_mac_key( |
| pSesInfo->server->mac_signing_key, |
| ntlm_session_key, pSesInfo->password); |
| |
| rc = CIFSSessSetup(xid, pSesInfo, |
| ntlm_session_key, nls_info); |
| } |
| if (rc) { |
| cERROR(1,("Send error in SessSetup = %d",rc)); |
| } else { |
| cFYI(1,("CIFS Session Established successfully")); |
| pSesInfo->status = CifsGood; |
| } |
| } |
| ss_err_exit: |
| return rc; |
| } |
| |