diff options
Diffstat (limited to 'release/src/linux/linux/fs/cifs/cifssmb.c')
| -rw-r--r-- | release/src/linux/linux/fs/cifs/cifssmb.c | 3016 |
1 files changed, 3016 insertions, 0 deletions
diff --git a/release/src/linux/linux/fs/cifs/cifssmb.c b/release/src/linux/linux/fs/cifs/cifssmb.c new file mode 100644 index 00000000..ca4dedf7 --- /dev/null +++ b/release/src/linux/linux/fs/cifs/cifssmb.c @@ -0,0 +1,3016 @@ +/* + * fs/cifs/cifssmb.c + * + * Copyright (C) International Business Machines Corp., 2002,2003 + * Author(s): Steve French (sfrench@us.ibm.com) + * + * Contains the routines for constructing the SMB PDUs themselves + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published + * by the Free Software Foundation; either version 2.1 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ + /* These are mostly routines that operate on a pathname, or on a tree id */ + /* (mounted volume), but there are eight handle based routines which must be */ + /* treated slightly different for reconnection purposes since we never want */ + /* to reuse a stale file handle and the caller knows the file handle */ + +#include <linux/fs.h> +#include <linux/kernel.h> +#include <linux/vfs.h> +#include <asm/uaccess.h> +#include "cifspdu.h" +#include "cifsglob.h" +#include "cifsproto.h" +#include "cifs_unicode.h" +#include "cifs_debug.h" + +#ifdef CONFIG_CIFS_POSIX +static struct { + int index; + char *name; +} protocols[] = { + {CIFS_PROT, "\2NT LM 0.12"}, + {CIFS_PROT, "\2POSIX 2"}, + {BAD_PROT, "\2"} +}; +#else +static struct { + int index; + char *name; +} protocols[] = { + {CIFS_PROT, "\2NT LM 0.12"}, + {BAD_PROT, "\2"} +}; +#endif + + +/* Mark as invalid, all open files on tree connections since they + were closed when session to server was lost */ +static void mark_open_files_invalid(struct cifsTconInfo * pTcon) +{ + struct cifsFileInfo *open_file = NULL; + struct list_head * tmp; + struct list_head * tmp1; + +/* list all files open on tree connection and mark them invalid */ + write_lock(&GlobalSMBSeslock); + list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { + open_file = list_entry(tmp,struct cifsFileInfo, tlist); + if(open_file) { + open_file->invalidHandle = TRUE; + } + } + write_unlock(&GlobalSMBSeslock); + /* BB Add call to invalidate_inodes(sb) for all superblocks mounted to this tcon */ +} + +static int +smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, + void **request_buf /* returned */ , + void **response_buf /* returned */ ) +{ + int rc = 0; + int timeout = 10 * HZ; + + /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so + check for tcp and smb session status done differently + for those three - in the calling routine */ + if(tcon) { + if((tcon->ses) && (tcon->ses->server)){ + struct nls_table *nls_codepage; + /* Give Demultiplex thread up to 10 seconds to + reconnect, should be greater than cifs socket + timeout which is 7 seconds */ + while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { + while ((tcon->ses->server->tcpStatus != CifsGood) && (timeout > 0)){ + timeout = interruptible_sleep_on_timeout(&tcon->ses->server->response_q,timeout); + } + if(tcon->ses->server->tcpStatus == CifsNeedReconnect) { + /* on "soft" mounts we wait once */ + if((tcon->retry == FALSE) || + (tcon->ses->status == CifsExiting)) { + cFYI(1,("gave up waiting on reconnect in smb_init")); + return -EHOSTDOWN; + } /* else "hard" mount - keep retrying until + process is killed or server comes back up */ + } else /* TCP session is reestablished now */ + break; + + } + + nls_codepage = load_nls_default(); + /* need to prevent multiple threads trying to + simultaneously reconnect the same SMB session */ + down(&tcon->ses->sesSem); + if(tcon->ses->status == CifsNeedReconnect) + rc = cifs_setup_session(0, tcon->ses, nls_codepage); + if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { + mark_open_files_invalid(tcon); + rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon, + nls_codepage); + up(&tcon->ses->sesSem); + if(rc == 0) + atomic_inc(&tconInfoReconnectCount); + + cFYI(1, ("reconnect tcon rc = %d", rc)); + /* Removed call to reopen open files here - + it is safer (and faster) to reopen files + one at a time as needed in read and write */ + + /* Check if handle based operation so we + know whether we can continue or not without + returning to caller to reset file handle */ + switch(smb_command) { + case SMB_COM_READ_ANDX: + case SMB_COM_WRITE_ANDX: + case SMB_COM_CLOSE: + case SMB_COM_FIND_CLOSE2: + case SMB_COM_LOCKING_ANDX: { + unload_nls(nls_codepage); + return -EAGAIN; + } + } + } else { + up(&tcon->ses->sesSem); + } + unload_nls(nls_codepage); + + } else { + return -EIO; + } + } + if(rc) + return rc; + + *request_buf = cifs_buf_get(); + if (*request_buf == 0) { + /* BB should we add a retry in here if not a writepage? */ + return -ENOMEM; + } + /* Although the original thought was we needed the response buf for */ + /* potential retries of smb operations it turns out we can determine */ + /* from the mid flags when the request buffer can be resent without */ + /* having to use a second distinct buffer for the response */ + *response_buf = *request_buf; + + header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, + wct /*wct */ ); + +#ifdef CONFIG_CIFS_STATS + if(tcon != NULL) { + atomic_inc(&tcon->num_smbs_sent); + } +#endif + return rc; +} + +int +CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) +{ + NEGOTIATE_REQ *pSMB; + NEGOTIATE_RSP *pSMBr; + int rc = 0; + int bytes_returned; + struct TCP_Server_Info * server; + + if(ses->server) + server = ses->server; + else { + rc = -EIO; + return rc; + } + rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , + (void **) &pSMB, (void **) &pSMBr); + if (rc) + return rc; + + pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; + if (extended_security) + pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; + + pSMB->ByteCount = strlen(protocols[0].name) + 1; + strncpy(pSMB->DialectsArray, protocols[0].name, 30); + /* null guaranteed to be at end of source and target buffers anyway */ + + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc == 0) { + server->secMode = pSMBr->SecurityMode; + server->secType = NTLM; /* BB override default for NTLMv2 or krb*/ + /* one byte - no need to convert this or EncryptionKeyLen from le,*/ + server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); + /* probably no need to store and check maxvcs */ + server->maxBuf = + min(le32_to_cpu(pSMBr->MaxBufferSize), + (__u32) CIFS_MAX_MSGSIZE + MAX_CIFS_HDR_SIZE); + server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); + cFYI(0, ("Max buf = %d ", ses->server->maxBuf)); + GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); + server->capabilities = le32_to_cpu(pSMBr->Capabilities); + server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone); + /* BB with UTC do we ever need to be using srvr timezone? */ + if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { + memcpy(server->cryptKey, pSMBr->u.EncryptionKey, + CIFS_CRYPTO_KEY_SIZE); + } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) + && (pSMBr->EncryptionKeyLength == 0)) { + /* decode security blob */ + } else + rc = -EIO; + + /* BB might be helpful to save off the domain of server here */ + + if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) { + if (pSMBr->ByteCount < 16) + rc = -EIO; + else if (pSMBr->ByteCount == 16) { + server->secType = RawNTLMSSP; + if (server->socketUseCount.counter > 1) { + if (memcmp + (server->server_GUID, + pSMBr->u.extended_response. + GUID, 16) != 0) { + cFYI(1, + ("UID of server does not match previous connection to same ip address")); + memcpy(server-> + server_GUID, + pSMBr->u. + extended_response. + GUID, 16); + } + } else + memcpy(server->server_GUID, + pSMBr->u.extended_response. + GUID, 16); + } else { + rc = decode_negTokenInit(pSMBr->u. + extended_response. + SecurityBlob, + pSMBr->ByteCount - + 16, &server->secType); + } + } else + server->capabilities &= ~CAP_EXTENDED_SECURITY; + if(sign_CIFS_PDUs == FALSE) { + if(server->secMode & SECMODE_SIGN_REQUIRED) + cERROR(1, + ("Server requires /proc/fs/cifs/PacketSigningEnabled")); + server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); + } else if(sign_CIFS_PDUs == 1) { + if((server->secMode & SECMODE_SIGN_REQUIRED) == 0) + server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); + } + + } + if (pSMB) + cifs_buf_release(pSMB); + return rc; +} + +int +CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) +{ + struct smb_hdr *smb_buffer; + struct smb_hdr *smb_buffer_response; + int rc = 0; + int length; + + cFYI(1, ("In tree disconnect")); + /* + * If last user of the connection and + * connection alive - disconnect it + * If this is the last connection on the server session disconnect it + * (and inside session disconnect we should check if tcp socket needs + * to be freed and kernel thread woken up). + */ + if (tcon) + down(&tcon->tconSem); + else + return -EIO; + + atomic_dec(&tcon->useCount); + if (atomic_read(&tcon->useCount) > 0) { + up(&tcon->tconSem); + return -EBUSY; + } + + /* No need to return error on this operation if tid invalidated and + closed on server already e.g. due to tcp session crashing */ + if(tcon->tidStatus == CifsNeedReconnect) { + up(&tcon->tconSem); + return 0; + } + + if((tcon->ses == 0) || (tcon->ses->server == 0)) { + up(&tcon->tconSem); + return -EIO; + } + + rc = smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, + (void **) &smb_buffer, (void **) &smb_buffer_response); + if (rc) { + up(&tcon->tconSem); + return rc; + } + rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response, + &length, 0); + if (rc) + cFYI(1, (" Tree disconnect failed %d", rc)); + + if (smb_buffer) + cifs_buf_release(smb_buffer); + up(&tcon->tconSem); + + /* No need to return error on this operation if tid invalidated and + closed on server already e.g. due to tcp session crashing */ + if (rc == -EAGAIN) + rc = 0; + + return rc; +} + +int +CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) +{ + struct smb_hdr *smb_buffer_response; + LOGOFF_ANDX_REQ *pSMB; + int rc = 0; + int length; + + cFYI(1, ("In SMBLogoff for session disconnect")); + if (ses) + down(&ses->sesSem); + else + return -EIO; + + atomic_dec(&ses->inUse); + if (atomic_read(&ses->inUse) > 0) { + up(&ses->sesSem); + return -EBUSY; + } + + rc = smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL /* no tcon anymore */, + (void **) &pSMB, (void **) &smb_buffer_response); + + if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) + pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; + + if (rc) { + up(&ses->sesSem); + return rc; + } + + pSMB->hdr.Uid = ses->Suid; + + pSMB->AndXCommand = 0xFF; + rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, + smb_buffer_response, &length, 0); + if (ses->server) { + atomic_dec(&ses->server->socketUseCount); + if (atomic_read(&ses->server->socketUseCount) == 0) { + spin_lock(&GlobalMid_Lock); + ses->server->tcpStatus = CifsExiting; + spin_unlock(&GlobalMid_Lock); + rc = -ESHUTDOWN; + } + } + if (pSMB) + cifs_buf_release(pSMB); + up(&ses->sesSem); + + /* if session dead then we do not need to do ulogoff, + since server closed smb session, no sense reporting + error */ + if (rc == -EAGAIN) + rc = 0; + return rc; +} + +int +CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, + const char *fileName, const struct nls_table *nls_codepage) +{ + DELETE_FILE_REQ *pSMB = NULL; + DELETE_FILE_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned; + int name_len; + +DelFileRetry: + rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->fileName, fileName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fileName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->fileName, fileName, name_len); + } + pSMB->SearchAttributes = + cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); + pSMB->ByteCount = name_len + 1; + pSMB->BufferFormat = 0x04; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Error in RMFile = %d", rc)); + } +#ifdef CONFIG_CIFS_STATS + else { + atomic_inc(&tcon->num_deletes); + } +#endif + + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto DelFileRetry; + + return rc; +} + +int +CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, + const char *dirName, const struct nls_table *nls_codepage) +{ + DELETE_DIRECTORY_REQ *pSMB = NULL; + DELETE_DIRECTORY_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned; + int name_len; + + cFYI(1, ("In CIFSSMBRmDir")); +RmDirRetry: + rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = cifs_strtoUCS((wchar_t *) pSMB->DirName, dirName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(dirName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->DirName, dirName, name_len); + } + + pSMB->ByteCount = name_len + 1; + pSMB->BufferFormat = 0x04; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Error in RMDir = %d", rc)); + } +#ifdef CONFIG_CIFS_STATS + else { + atomic_inc(&tcon->num_rmdirs); + } +#endif + + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto RmDirRetry; + return rc; +} + +int +CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, + const char *name, const struct nls_table *nls_codepage) +{ + int rc = 0; + CREATE_DIRECTORY_REQ *pSMB = NULL; + CREATE_DIRECTORY_RSP *pSMBr = NULL; + int bytes_returned; + int name_len; + + cFYI(1, ("In CIFSSMBMkDir")); +MkDirRetry: + rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = cifs_strtoUCS((wchar_t *) pSMB->DirName, name, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(name, 530); + name_len++; /* trailing null */ + strncpy(pSMB->DirName, name, name_len); + } + + pSMB->ByteCount = name_len + 1 /* for buf format */ ; + pSMB->BufferFormat = 0x04; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Error in Mkdir = %d", rc)); + } +#ifdef CONFIG_CIFS_STATS + else { + atomic_inc(&tcon->num_mkdirs); + } +#endif + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto MkDirRetry; + return rc; +} + +int +CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, + const char *fileName, const int openDisposition, + const int access_flags, const int create_options, __u16 * netfid, + int *pOplock, FILE_ALL_INFO * pfile_info, + const struct nls_table *nls_codepage) +{ + int rc = -EACCES; + OPEN_REQ *pSMB = NULL; + OPEN_RSP *pSMBr = NULL; + int bytes_returned; + int name_len; + +openRetry: + rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->AndXCommand = 0xFF; /* none */ + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + pSMB->ByteCount = 1; /* account for one byte pad to word boundary */ + name_len = + cifs_strtoUCS((wchar_t *) (pSMB->fileName + 1), + fileName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + pSMB->NameLength = cpu_to_le16(name_len); + } else { /* BB improve the check for buffer overruns BB */ + pSMB->ByteCount = 0; /* no pad */ + name_len = strnlen(fileName, 530); + name_len++; /* trailing null */ + pSMB->NameLength = cpu_to_le16(name_len); + strncpy(pSMB->fileName, fileName, name_len); + } + if (*pOplock & REQ_OPLOCK) + pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); + else if (*pOplock & REQ_BATCHOPLOCK) { + pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); + } + pSMB->DesiredAccess = cpu_to_le32(access_flags); + pSMB->AllocationSize = 0; + pSMB->FileAttributes = ATTR_NORMAL; + /* XP does not handle ATTR_POSIX_SEMANTICS */ + /* but it helps speed up case sensitive checks for other + servers such as Samba */ + if (tcon->ses->capabilities & CAP_UNIX) + pSMB->FileAttributes |= ATTR_POSIX_SEMANTICS; + + /* if ((omode & S_IWUGO) == 0) + pSMB->FileAttributes |= ATTR_READONLY;*/ + /* Above line causes problems due to vfs splitting create into two + pieces - need to set mode after file created not while it is + being created */ + pSMB->FileAttributes = cpu_to_le32(pSMB->FileAttributes); + pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); + pSMB->CreateDisposition = cpu_to_le32(openDisposition); + pSMB->CreateOptions = cpu_to_le32(create_options); + pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); /* BB ??*/ + pSMB->SecurityFlags = + cpu_to_le32(SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY); + + pSMB->ByteCount += name_len; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + /* long_op set to 1 to allow for oplock break timeouts */ + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 1); + if (rc) { + cFYI(1, ("Error in Open = %d", rc)); + } else { + *pOplock = pSMBr->OplockLevel; /* one byte no need to le_to_cpu */ + *netfid = pSMBr->Fid; /* cifs fid stays in le */ + /* Let caller know file was created so we can set the mode. */ + /* Do we care about the CreateAction in any other cases? */ + if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) + *pOplock |= CIFS_CREATE_ACTION; + if(pfile_info) { + memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime, + 36 /* CreationTime to Attributes */); + /* the file_info buf is endian converted by caller */ + pfile_info->AllocationSize = pSMBr->AllocationSize; + pfile_info->EndOfFile = pSMBr->EndOfFile; + pfile_info->NumberOfLinks = cpu_to_le32(1); + } + +#ifdef CONFIG_CIFS_STATS + atomic_inc(&tcon->num_opens); +#endif + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto openRetry; + return rc; +} + +/* If no buffer passed in, then caller wants to do the copy + as in the case of readpages so the SMB buffer must be + freed by the caller */ + +int +CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, + const int netfid, const unsigned int count, + const __u64 lseek, unsigned int *nbytes, char **buf) +{ + int rc = -EACCES; + READ_REQ *pSMB = NULL; + READ_RSP *pSMBr = NULL; + char *pReadData = NULL; + int bytes_returned; + + *nbytes = 0; + rc = smb_init(SMB_COM_READ_ANDX, 12, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + /* tcon and ses pointer are checked in smb_init */ + if (tcon->ses->server == NULL) + return -ECONNABORTED; + + pSMB->AndXCommand = 0xFF; /* none */ + pSMB->Fid = netfid; + pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); + pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); + pSMB->Remaining = 0; + pSMB->MaxCount = cpu_to_le16(count); + pSMB->MaxCountHigh = 0; + pSMB->ByteCount = 0; /* no need to do le conversion since it is 0 */ + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cERROR(1, ("Send error in read = %d", rc)); + } else { + pSMBr->DataLength = le16_to_cpu(pSMBr->DataLength); + *nbytes = pSMBr->DataLength; + /*check that DataLength would not go beyond end of SMB */ + if ((pSMBr->DataLength > CIFS_MAX_MSGSIZE) + || (pSMBr->DataLength > count)) { + cFYI(1,("bad length %d for count %d",pSMBr->DataLength,count)); + rc = -EIO; + *nbytes = 0; + } else { + pReadData = + (char *) (&pSMBr->hdr.Protocol) + + le16_to_cpu(pSMBr->DataOffset); +/* if(rc = copy_to_user(buf, pReadData, pSMBr->DataLength)) { + cERROR(1,("Faulting on read rc = %d",rc)); + rc = -EFAULT; + }*/ /* can not use copy_to_user when using page cache*/ + if(*buf) + memcpy(*buf,pReadData,pSMBr->DataLength); + } + } + if (pSMB) { + if(*buf) + cifs_buf_release(pSMB); + else + *buf = (char *)pSMB; + } + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + return rc; +} + +int +CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, + const int netfid, const unsigned int count, + const __u64 offset, unsigned int *nbytes, const char *buf, + const int long_op) +{ + int rc = -EACCES; + WRITE_REQ *pSMB = NULL; + WRITE_RSP *pSMBr = NULL; + int bytes_returned; + + rc = smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + /* tcon and ses pointer are checked in smb_init */ + if (tcon->ses->server == NULL) + return -ECONNABORTED; + + pSMB->AndXCommand = 0xFF; /* none */ + pSMB->Fid = netfid; + pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); + pSMB->OffsetHigh = cpu_to_le32(offset >> 32); + pSMB->Remaining = 0; + if (count > ((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00)) + pSMB->DataLengthLow = + (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00; + else + pSMB->DataLengthLow = count; + pSMB->DataLengthHigh = 0; + pSMB->DataOffset = + cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); + + memcpy(pSMB->Data,buf,pSMB->DataLengthLow); + + pSMB->ByteCount += pSMB->DataLengthLow + 1 /* pad */ ; + pSMB->DataLengthLow = cpu_to_le16(pSMB->DataLengthLow); + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, long_op); + if (rc) { + cFYI(1, ("Send error in write = %d", rc)); + *nbytes = 0; + } else + *nbytes = le16_to_cpu(pSMBr->Count); + + if (pSMB) + cifs_buf_release(pSMB); + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + + return rc; +} + +int +CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, + const __u16 smb_file_id, const __u64 len, + const __u64 offset, const __u32 numUnlock, + const __u32 numLock, const __u8 lockType, const int waitFlag) +{ + int rc = 0; + LOCK_REQ *pSMB = NULL; + LOCK_RSP *pSMBr = NULL; + int bytes_returned; + int timeout = 0; + __u64 temp; + + cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock)); + rc = smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) { + timeout = -1; /* no response expected */ + pSMB->Timeout = 0; + } else if (waitFlag == TRUE) { + timeout = 3; /* blocking operation, no timeout */ + pSMB->Timeout = -1; /* blocking - do not time out */ + } else { + pSMB->Timeout = 0; + } + + pSMB->NumberOfLocks = cpu_to_le32(numLock); + pSMB->NumberOfUnlocks = cpu_to_le32(numUnlock); + pSMB->LockType = lockType; + pSMB->AndXCommand = 0xFF; /* none */ + pSMB->Fid = smb_file_id; /* netfid stays le */ + + if(numLock != 0) { + pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); + /* BB where to store pid high? */ + temp = cpu_to_le64(len); + pSMB->Locks[0].LengthLow = (__u32)(temp & 0xFFFFFFFF); + pSMB->Locks[0].LengthHigh = (__u32)(temp>>32); + temp = cpu_to_le64(offset); + pSMB->Locks[0].OffsetLow = (__u32)(temp & 0xFFFFFFFF); + pSMB->Locks[0].OffsetHigh = (__u32)(temp>>32); + pSMB->ByteCount = sizeof (LOCKING_ANDX_RANGE); + } else { + /* oplock break */ + pSMB->ByteCount = 0; + } + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, timeout); + + if (rc) { + cFYI(1, ("Send error in Lock = %d", rc)); + } + if (pSMB) + cifs_buf_release(pSMB); + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + return rc; +} + +int +CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) +{ + int rc = 0; + CLOSE_REQ *pSMB = NULL; + CLOSE_RSP *pSMBr = NULL; + int bytes_returned; + cFYI(1, ("In CIFSSMBClose")); + +/* do not retry on dead session on close */ + rc = smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB, + (void **) &pSMBr); + if(rc == -EAGAIN) + return 0; + if (rc) + return rc; + + pSMB->FileID = (__u16) smb_file_id; + pSMB->LastWriteTime = 0; + pSMB->ByteCount = 0; + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + if(rc!=-EINTR) { + /* EINTR is expected when user ctl-c to kill app */ + cERROR(1, ("Send error in Close = %d", rc)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + + /* Since session is dead, file will be closed on server already */ + if(rc == -EAGAIN) + rc = 0; + + return rc; +} + +int +CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, + const char *fromName, const char *toName, + const struct nls_table *nls_codepage) +{ + int rc = 0; + RENAME_REQ *pSMB = NULL; + RENAME_RSP *pSMBr = NULL; + int bytes_returned; + int name_len, name_len2; + + cFYI(1, ("In CIFSSMBRename")); +renameRetry: + rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->BufferFormat = 0x04; + pSMB->SearchAttributes = + cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | + ATTR_DIRECTORY); + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->OldFileName, fromName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + pSMB->OldFileName[name_len] = 0x04; /* pad */ + /* protocol requires ASCII signature byte on Unicode string */ + pSMB->OldFileName[name_len + 1] = 0x00; + name_len2 = + cifs_strtoUCS((wchar_t *) & pSMB-> + OldFileName[name_len + 2], toName, 530, + nls_codepage); + name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; + name_len2 *= 2; /* convert to bytes */ + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fromName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->OldFileName, fromName, name_len); + name_len2 = strnlen(toName, 530); + name_len2++; /* trailing null */ + pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ + strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); + name_len2++; /* trailing null */ + name_len2++; /* signature byte */ + } + + pSMB->ByteCount = 1 /* 1st signature byte */ + name_len + name_len2; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in rename = %d", rc)); + } + +#ifdef CONFIG_CIFS_STATS + else { + atomic_inc(&tcon->num_renames); + } +#endif + + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto renameRetry; + + return rc; +} + +int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon, + int netfid, char * target_name, const struct nls_table * nls_codepage) +{ + struct smb_com_transaction2_sfi_req *pSMB = NULL; + struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; + struct set_file_rename * rename_info; + char *data_offset; + char dummy_string[30]; + int rc = 0; + int bytes_returned = 0; + int len_of_str; + + cFYI(1, ("Rename to File by handle")); + rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->ParameterCount = 6; + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_sfi_req, + Fid) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + + data_offset = (char *) (&pSMB->hdr.Protocol) + pSMB->DataOffset; + rename_info = (struct set_file_rename *) data_offset; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount; + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); + /* construct random name ".cifs_tmp<inodenum><mid>" */ + rename_info->overwrite = cpu_to_le32(1); + rename_info->root_fid = 0; + /* unicode only call */ + if(target_name == NULL) { + sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid); + len_of_str = cifs_strtoUCS((wchar_t *) rename_info->target_name, dummy_string, 24, nls_codepage); + } else { + len_of_str = cifs_strtoUCS((wchar_t *) rename_info->target_name, target_name, 530, nls_codepage); + } + rename_info->target_name_len = cpu_to_le32(2 * len_of_str); + pSMB->DataCount = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2; + pSMB->ByteCount += pSMB->DataCount; + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->Fid = netfid; + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1,("Send error in Rename (by file handle) = %d", rc)); + } +#ifdef CONFIG_CIFS_STATS + else { + atomic_inc(&pTcon->num_t2renames); + } +#endif + if (pSMB) + cifs_buf_release(pSMB); + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + + return rc; +} + +int +CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName, + const __u16 target_tid, const char *toName, const int flags, + const struct nls_table *nls_codepage) +{ + int rc = 0; + COPY_REQ *pSMB = NULL; + COPY_RSP *pSMBr = NULL; + int bytes_returned; + int name_len, name_len2; + + cFYI(1, ("In CIFSSMBCopy")); +copyRetry: + rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->BufferFormat = 0x04; + pSMB->Tid2 = target_tid; + + if(flags & COPY_TREE) + pSMB->Flags |= COPY_TREE; + pSMB->Flags = cpu_to_le16(pSMB->Flags); + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = cifs_strtoUCS((wchar_t *) pSMB->OldFileName, + fromName, + 530 /* find define for this maxpathcomponent */, + nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + pSMB->OldFileName[name_len] = 0x04; /* pad */ + /* protocol requires ASCII signature byte on Unicode string */ + pSMB->OldFileName[name_len + 1] = 0x00; + name_len2 = cifs_strtoUCS((wchar_t *) & pSMB-> + OldFileName[name_len + 2], toName, 530, + nls_codepage); + name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; + name_len2 *= 2; /* convert to bytes */ + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fromName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->OldFileName, fromName, name_len); + name_len2 = strnlen(toName, 530); + name_len2++; /* trailing null */ + pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ + strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); + name_len2++; /* trailing null */ + name_len2++; /* signature byte */ + } + + pSMB->ByteCount = 1 /* 1st signature byte */ + name_len + name_len2; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in copy = %d with %d files copied", + rc, pSMBr->CopyCount)); + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto copyRetry; + + return rc; +} + +int +CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, + const char *fromName, const char *toName, + const struct nls_table *nls_codepage) +{ + TRANSACTION2_SPI_REQ *pSMB = NULL; + TRANSACTION2_SPI_RSP *pSMBr = NULL; + char *data_offset; + int name_len; + int name_len_target; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In Symlink Unix style")); +createSymLinkRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, fromName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fromName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, fromName, name_len); + } + pSMB->ParameterCount = 6 + name_len; + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_spi_req, + InformationLevel) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + + data_offset = (char *) (&pSMB->hdr.Protocol) + pSMB->DataOffset; + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len_target = + cifs_strtoUCS((wchar_t *) data_offset, toName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len_target++; /* trailing null */ + name_len_target *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len_target = strnlen(toName, 530); + name_len_target++; /* trailing null */ + strncpy(data_offset, toName, name_len_target); + } + + pSMB->DataCount = name_len_target; + pSMB->MaxParameterCount = cpu_to_le16(2); + /* BB find exact max on data count below from sess */ + pSMB->MaxDataCount = cpu_to_le16(1000); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount + pSMB->DataCount; + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); + pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, + ("Send error in SetPathInfo (create symlink) = %d", + rc)); + } + + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto createSymLinkRetry; + + return rc; +} + +int +CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, + const char *fromName, const char *toName, + const struct nls_table *nls_codepage) +{ + TRANSACTION2_SPI_REQ *pSMB = NULL; + TRANSACTION2_SPI_RSP *pSMBr = NULL; + char *data_offset; + int name_len; + int name_len_target; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In Create Hard link Unix style")); +createHardLinkRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = cifs_strtoUCS((wchar_t *) pSMB->FileName, toName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(toName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, toName, name_len); + } + pSMB->ParameterCount = 6 + name_len; + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_spi_req, + InformationLevel) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + + data_offset = (char *) (&pSMB->hdr.Protocol) + pSMB->DataOffset; + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len_target = + cifs_strtoUCS((wchar_t *) data_offset, fromName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len_target++; /* trailing null */ + name_len_target *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len_target = strnlen(fromName, 530); + name_len_target++; /* trailing null */ + strncpy(data_offset, fromName, name_len_target); + } + + pSMB->DataCount = name_len_target; + pSMB->MaxParameterCount = cpu_to_le16(2); + /* BB find exact max on data count below from sess*/ + pSMB->MaxDataCount = cpu_to_le16(1000); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount + pSMB->DataCount; + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); + pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); + } + + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto createHardLinkRetry; + + return rc; +} + +int +CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, + const char *fromName, const char *toName, + const struct nls_table *nls_codepage) +{ + int rc = 0; + NT_RENAME_REQ *pSMB = NULL; + RENAME_RSP *pSMBr = NULL; + int bytes_returned; + int name_len, name_len2; + + cFYI(1, ("In CIFSCreateHardLink")); +winCreateHardLinkRetry: + + rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->SearchAttributes = + cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | + ATTR_DIRECTORY); + pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); + pSMB->ClusterCount = 0; + + pSMB->BufferFormat = 0x04; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->OldFileName, fromName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + pSMB->OldFileName[name_len] = 0; /* pad */ + pSMB->OldFileName[name_len + 1] = 0x04; + name_len2 = + cifs_strtoUCS((wchar_t *) & pSMB-> + OldFileName[name_len + 2], toName, 530, + nls_codepage); + name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; + name_len2 *= 2; /* convert to bytes */ + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fromName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->OldFileName, fromName, name_len); + name_len2 = strnlen(toName, 530); + name_len2++; /* trailing null */ + pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ + strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); + name_len2++; /* trailing null */ + name_len2++; /* signature byte */ + } + + pSMB->ByteCount = 1 /* string type byte */ + name_len + name_len2; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto winCreateHardLinkRetry; + + return rc; +} + +int +CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, + const unsigned char *searchName, + char *symlinkinfo, const int buflen, + const struct nls_table *nls_codepage) +{ +/* SMB_QUERY_FILE_UNIX_LINK */ + TRANSACTION2_QPI_REQ *pSMB = NULL; + TRANSACTION2_QPI_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned; + int name_len; + + cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); + +querySymLinkRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, searchName, name_len); + } + + pSMB->TotalParameterCount = + 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + /* BB find exact max data count below from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(4000); + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + pSMBr->DataCount = le16_to_cpu(pSMBr->DataCount); + if ((pSMBr->ByteCount < 2) || (pSMBr->DataOffset > 512)) + /* BB also check enough total bytes returned */ + rc = -EIO; /* bad smb */ + else { + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = UniStrnlen((wchar_t *) ((char *) + &pSMBr->hdr.Protocol +pSMBr->DataOffset), + min_t(const int, buflen,pSMBr->DataCount) / 2); + cifs_strfromUCS_le(symlinkinfo, + (wchar_t *) ((char *)&pSMBr->hdr.Protocol + + pSMBr->DataOffset), + name_len, nls_codepage); + } else { + strncpy(symlinkinfo, + (char *) &pSMBr->hdr.Protocol + + pSMBr->DataOffset, + min_t(const int, buflen, pSMBr->DataCount)); + } + symlinkinfo[buflen] = 0; + /* just in case so calling code does not go off the end of buffer */ + } + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto querySymLinkRetry; + return rc; +} + + + +int +CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, + const unsigned char *searchName, + char *symlinkinfo, const int buflen,__u16 fid, + const struct nls_table *nls_codepage) +{ + int rc = 0; + int bytes_returned; + int name_len; + struct smb_com_transaction_ioctl_req * pSMB; + struct smb_com_transaction_ioctl_rsp * pSMBr; + + cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); + rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->TotalParameterCount = 0 ; + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le32(2); + /* BB find exact data count max from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le32(4000); + pSMB->MaxSetupCount = 4; + pSMB->Reserved = 0; + pSMB->ParameterOffset = 0; + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 4; + pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); + pSMB->IsFsctl = 1; /* FSCTL */ + pSMB->IsRootFlag = 0; + pSMB->Fid = fid; /* file handle always le */ + pSMB->ByteCount = 0; + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + pSMBr->DataCount = le16_to_cpu(pSMBr->DataCount); + if ((pSMBr->ByteCount < 2) || (pSMBr->DataOffset > 512)) + /* BB also check enough total bytes returned */ + rc = -EIO; /* bad smb */ + else { + if(pSMBr->DataCount && (pSMBr->DataCount < 2048)) { + /* could also validate reparse tag && better check name length */ + struct reparse_data * reparse_buf = (struct reparse_data *) + ((char *)&pSMBr->hdr.Protocol + pSMBr->DataOffset); + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = UniStrnlen((wchar_t *) + (reparse_buf->LinkNamesBuf + + reparse_buf->TargetNameOffset), + min(buflen/2, reparse_buf->TargetNameLen / 2)); + cifs_strfromUCS_le(symlinkinfo, + (wchar_t *) (reparse_buf->LinkNamesBuf + + reparse_buf->TargetNameOffset), + name_len, nls_codepage); + } else { /* ASCII names */ + strncpy(symlinkinfo,reparse_buf->LinkNamesBuf + + reparse_buf->TargetNameOffset, + min_t(const int, buflen, reparse_buf->TargetNameLen)); + } + } else { + rc = -EIO; + cFYI(1,("Invalid return data count on get reparse info ioctl")); + } + symlinkinfo[buflen] = 0; /* just in case so the caller + does not go off the end of the buffer */ + cFYI(1,("readlink result - %s ",symlinkinfo)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + + return rc; +} + +int +CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, + const unsigned char *searchName, + FILE_ALL_INFO * pFindData, + const struct nls_table *nls_codepage) +{ +/* level 263 SMB_QUERY_FILE_ALL_INFO */ + TRANSACTION2_QPI_REQ *pSMB = NULL; + TRANSACTION2_QPI_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned; + int name_len; + + cFYI(1, ("In QPathInfo path %s", searchName)); +QPathInfoRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, searchName, name_len); + } + + pSMB->TotalParameterCount = 2 /* level */ + 4 /* reserved */ + + name_len /* includes null */ ; + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QPathInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + /* BB also check enough total bytes returned */ + /* BB we need to improve the validity checking + of these trans2 responses */ + if ((pSMBr->ByteCount < 40) || (pSMBr->DataOffset > 512)) + rc = -EIO; /* bad smb */ + else if (pFindData){ + memcpy((char *) pFindData, + (char *) &pSMBr->hdr.Protocol + + pSMBr->DataOffset, sizeof (FILE_ALL_INFO)); + } else + rc = -ENOMEM; + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto QPathInfoRetry; + + return rc; +} + +int +CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, + const unsigned char *searchName, + FILE_UNIX_BASIC_INFO * pFindData, + const struct nls_table *nls_codepage) +{ +/* SMB_QUERY_FILE_UNIX_BASIC */ + TRANSACTION2_QPI_REQ *pSMB = NULL; + TRANSACTION2_QPI_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned = 0; + int name_len; + + cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); +UnixQPathInfoRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, searchName, name_len); + } + + pSMB->TotalParameterCount = 2 /* level */ + 4 /* reserved */ + + name_len /* includes null */ ; + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(4000); + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QPathInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + /* BB also check if enough total bytes returned */ + if ((pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO)) || + (pSMBr->DataOffset > 512) || + (pSMBr->DataOffset < sizeof(struct smb_hdr))) { + cFYI(1,("UnixQPathinfo invalid data offset %d bytes returned %d", + (int)pSMBr->DataOffset,bytes_returned)); + rc = -EIO; /* bad smb */ + } else { + memcpy((char *) pFindData, + (char *) &pSMBr->hdr.Protocol + + pSMBr->DataOffset, + sizeof (FILE_UNIX_BASIC_INFO)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto UnixQPathInfoRetry; + + return rc; +} + +int +CIFSFindSingle(const int xid, struct cifsTconInfo *tcon, + const char *searchName, FILE_ALL_INFO * findData, + const struct nls_table *nls_codepage) +{ +/* level 257 SMB_ */ + TRANSACTION2_FFIRST_REQ *pSMB = NULL; + TRANSACTION2_FFIRST_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned; + int name_len; + + cFYI(1, ("In FindUnique")); +findUniqueRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, searchName, name_len); + } + + pSMB->TotalParameterCount = 12 + name_len /* includes null */ ; + pSMB->TotalDataCount = 0; /* no EAs */ + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16( + offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; /* one byte, no need to le convert */ + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalDataCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->SearchAttributes = + cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | + ATTR_DIRECTORY); + pSMB->SearchCount = cpu_to_le16(16); /* BB increase */ + pSMB->SearchFlags = cpu_to_le16(1); + pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); + pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */ + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + + if (rc) { + cFYI(1, ("Send error in FindFileDirInfo = %d", rc)); + } else { /* decode response */ + + /* BB fill in */ + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto findUniqueRetry; + + return rc; +} + +int +CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, + const char *searchName, FILE_DIRECTORY_INFO * findData, + T2_FFIRST_RSP_PARMS * findParms, + const struct nls_table *nls_codepage, int *pUnicodeFlag, + int *pUnixFlag) +{ +/* level 257 SMB_ */ + TRANSACTION2_FFIRST_REQ *pSMB = NULL; + TRANSACTION2_FFIRST_RSP *pSMBr = NULL; + char *response_data; + int rc = 0; + int bytes_returned; + int name_len; + + cFYI(1, ("In FindFirst")); +findFirstRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, searchName, name_len); + } + + pSMB->TotalParameterCount = 12 + name_len /* includes null */ ; + pSMB->TotalDataCount = 0; /* no EAs */ + pSMB->MaxParameterCount = cpu_to_le16(10); + pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - + MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->ParameterOffset = cpu_to_le16(offsetof(struct + smb_com_transaction2_ffirst_req, SearchAttributes) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; /* one byte no need to make endian neutral */ + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); + pSMB->SearchAttributes = + cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | + ATTR_DIRECTORY); + pSMB->SearchCount = cpu_to_le16(CIFS_MAX_MSGSIZE / sizeof (FILE_DIRECTORY_INFO)); /* should this be shrunk even more ? */ + pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); + + /* test for Unix extensions */ + if (tcon->ses->capabilities & CAP_UNIX) { + pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX); + *pUnixFlag = TRUE; + } else { + pSMB->InformationLevel = + cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); + *pUnixFlag = FALSE; + } + pSMB->SearchStorageType = 0; /* BB what should we set this to? It is not clear if it matters BB */ + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + + if (rc) { /* BB add logic to retry regular search if Unix search rejected unexpectedly by server */ + cFYI(1, ("Error in FindFirst = %d", rc)); + } else { /* decode response */ + /* BB add safety checks for these memcpys */ + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) + *pUnicodeFlag = TRUE; + else + *pUnicodeFlag = FALSE; + memcpy(findParms, + (char *) &pSMBr->hdr.Protocol + + le16_to_cpu(pSMBr->ParameterOffset), + sizeof (T2_FFIRST_RSP_PARMS)); + /* search handle can stay LE and EAoffset not needed so not converted */ + findParms->EndofSearch = le16_to_cpu(findParms->EndofSearch); + findParms->LastNameOffset = + le16_to_cpu(findParms->LastNameOffset); + findParms->SearchCount = le16_to_cpu(findParms->SearchCount); + response_data = + (char *) &pSMBr->hdr.Protocol + + le16_to_cpu(pSMBr->DataOffset); + memcpy(findData, response_data, le16_to_cpu(pSMBr->DataCount)); + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto findFirstRetry; + + return rc; +} + +int +CIFSFindNext(const int xid, struct cifsTconInfo *tcon, + FILE_DIRECTORY_INFO * findData, T2_FNEXT_RSP_PARMS * findParms, + const __u16 searchHandle, char * resume_file_name, int name_len, + __u32 resume_key, int *pUnicodeFlag, int *pUnixFlag) +{ +/* level 257 SMB_ */ + TRANSACTION2_FNEXT_REQ *pSMB = NULL; + TRANSACTION2_FNEXT_RSP *pSMBr = NULL; + char *response_data; + int rc = 0; + int bytes_returned; + + cFYI(1, ("In FindNext")); + + if(resume_file_name == NULL) { + return -EIO; + } + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->TotalParameterCount = 14; /* includes 2 bytes of null string, converted to LE below */ + pSMB->TotalDataCount = 0; /* no EAs */ + pSMB->MaxParameterCount = cpu_to_le16(8); + pSMB->MaxDataCount = + cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_fnext_req,SearchHandle) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); + pSMB->SearchHandle = searchHandle; /* always kept as le */ + findParms->SearchCount = 0; /* set to zero in case of error */ + pSMB->SearchCount = + cpu_to_le16(CIFS_MAX_MSGSIZE / sizeof (FILE_DIRECTORY_INFO)); + /* test for Unix extensions */ + if (tcon->ses->capabilities & CAP_UNIX) { + pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX); + *pUnixFlag = TRUE; + } else { + pSMB->InformationLevel = + cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); + *pUnixFlag = FALSE; + } + pSMB->ResumeKey = resume_key; + pSMB->SearchFlags = + cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); + /* BB add check to make sure we do not cross end of smb */ + if(name_len < CIFS_MAX_MSGSIZE) { + memcpy(pSMB->ResumeFileName, resume_file_name, name_len); + pSMB->ByteCount += name_len; + } + pSMB->TotalParameterCount += name_len; + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + /* BB improve error handling here */ + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + + if (rc) { + if (rc == -EBADF) + rc = 0; /* search probably was closed at end of search above */ + else + cFYI(1, ("FindNext returned = %d", rc)); + } else { /* decode response */ + /* BB add safety checks for these memcpys */ + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) + *pUnicodeFlag = TRUE; + else + *pUnicodeFlag = FALSE; + memcpy(findParms, + (char *) &pSMBr->hdr.Protocol + + le16_to_cpu(pSMBr->ParameterOffset), + sizeof (T2_FNEXT_RSP_PARMS)); + findParms->EndofSearch = le16_to_cpu(findParms->EndofSearch); + findParms->LastNameOffset = + le16_to_cpu(findParms->LastNameOffset); + findParms->SearchCount = le16_to_cpu(findParms->SearchCount); + response_data = + (char *) &pSMBr->hdr.Protocol + + le16_to_cpu(pSMBr->DataOffset); + memcpy(findData, response_data, le16_to_cpu(pSMBr->DataCount)); + } + if (pSMB) + cifs_buf_release(pSMB); + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + + return rc; +} + +int +CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle) +{ + int rc = 0; + FINDCLOSE_REQ *pSMB = NULL; + CLOSE_RSP *pSMBr = NULL; + int bytes_returned; + + cFYI(1, ("In CIFSSMBFindClose")); + rc = smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **) &pSMB, + (void **) &pSMBr); + /* no sense returning error if session restarted + file handle has been closed */ + if(rc == -EAGAIN) + return 0; + if (rc) + return rc; + + pSMB->FileID = searchHandle; + pSMB->ByteCount = 0; + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cERROR(1, ("Send error in FindClose = %d", rc)); + } + if (pSMB) + cifs_buf_release(pSMB); + + /* Since session is dead, search handle closed on server already */ + if (rc == -EAGAIN) + rc = 0; + + return rc; +} + +int +CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, + const unsigned char *searchName, + unsigned char **targetUNCs, + unsigned int *number_of_UNC_in_array, + const struct nls_table *nls_codepage) +{ +/* TRANS2_GET_DFS_REFERRAL */ + TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; + TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; + struct dfs_referral_level_3 * referrals = NULL; + int rc = 0; + int bytes_returned; + int name_len; + unsigned int i; + char * temp; + *number_of_UNC_in_array = 0; + *targetUNCs = NULL; + + cFYI(1, ("In GetDFSRefer the path %s", searchName)); + if (ses == NULL) + return -ENODEV; +getDFSRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->hdr.Tid = ses->ipc_tid; + pSMB->hdr.Uid = ses->Suid; + if (ses->capabilities & CAP_STATUS32) { + pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; + } + if (ses->capabilities & CAP_DFS) { + pSMB->hdr.Flags2 |= SMBFLG2_DFS; + } + + if (ses->capabilities & CAP_UNICODE) { + pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; + name_len = + cifs_strtoUCS((wchar_t *) pSMB->RequestFileName, + searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->RequestFileName, searchName, name_len); + } + + pSMB->ParameterCount = 2 /* level */ + name_len /*includes null */ ; + pSMB->TotalDataCount = 0; + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->MaxParameterCount = 0; + pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); + pSMB->ByteCount = pSMB->ParameterCount + 3 /* pad */ ; + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->MaxReferralLevel = cpu_to_le16(3); + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in GetDFSRefer = %d", rc)); + } else { /* decode response */ +/* BB Add logic to parse referrals here */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + pSMBr->DataCount = le16_to_cpu(pSMBr->DataCount); + cFYI(1, + ("Decoding GetDFSRefer response. BCC: %d Offset %d", + pSMBr->ByteCount, pSMBr->DataOffset)); + if ((pSMBr->ByteCount < 17) || (pSMBr->DataOffset > 512)) /* BB also check enough total bytes returned */ + rc = -EIO; /* bad smb */ + else { + referrals = + (struct dfs_referral_level_3 *) + (8 /* sizeof start of data block */ + + pSMBr->DataOffset + + (char *) &pSMBr->hdr.Protocol); + cFYI(1,("num_referrals: %d dfs flags: 0x%x ... \nfor referral one refer size: 0x%x srv type: 0x%x refer flags: 0x%x ttl: 0x%x",pSMBr->NumberOfReferrals,pSMBr->DFSFlags, referrals->ReferralSize,referrals->ServerType,referrals->ReferralFlags,referrals->TimeToLive)); + /* BB This field is actually two bytes in from start of + data block so we could do safety check that DataBlock + begins at address of pSMBr->NumberOfReferrals */ + *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals); + + /* BB Fix below so can return more than one referral */ + if(*number_of_UNC_in_array > 1) + *number_of_UNC_in_array = 1; + + /* get the length of the strings describing refs */ + name_len = 0; + for(i=0;i<*number_of_UNC_in_array;i++) { + /* make sure that DfsPathOffset not past end */ + referrals->DfsPathOffset = le16_to_cpu(referrals->DfsPathOffset); + if(referrals->DfsPathOffset > pSMBr->DataCount) { + /* if invalid referral, stop here and do + not try to copy any more */ + *number_of_UNC_in_array = i; + break; + } + temp = ((char *)referrals) + referrals->DfsPathOffset; + + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len += UniStrnlen((wchar_t *)temp,pSMBr->DataCount); + } else { + name_len += strnlen(temp,pSMBr->DataCount); + } + referrals++; + /* BB add check that referral pointer does not fall off end PDU */ + + } + /* BB add check for name_len bigger than bcc */ + *targetUNCs = + kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL); + /* copy the ref strings */ + referrals = + (struct dfs_referral_level_3 *) + (8 /* sizeof data hdr */ + + pSMBr->DataOffset + + (char *) &pSMBr->hdr.Protocol); + + for(i=0;i<*number_of_UNC_in_array;i++) { + temp = ((char *)referrals) + referrals->DfsPathOffset; + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { + cifs_strfromUCS_le(*targetUNCs, + (wchar_t *) temp, name_len, nls_codepage); + } else { + strncpy(*targetUNCs,temp,name_len); + } + /* BB update target_uncs pointers */ + referrals++; + } + temp = *targetUNCs; + temp[name_len] = 0; + } + + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto getDFSRetry; + + return rc; +} + +int +CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, + struct statfs *FSData, const struct nls_table *nls_codepage) +{ +/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ + TRANSACTION2_QFSI_REQ *pSMB = NULL; + TRANSACTION2_QFSI_RSP *pSMBr = NULL; + FILE_SYSTEM_INFO *response_data; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In QFSInfo")); +QFSInfoRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->TotalParameterCount = 2; /* level */ + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cERROR(1, ("Send error in QFSInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + cFYI(1, + ("Decoding qfsinfo response. BCC: %d Offset %d", + pSMBr->ByteCount, pSMBr->DataOffset)); + if ((pSMBr->ByteCount < 24) || (pSMBr->DataOffset > 512)) /* BB also check enough total bytes returned */ + rc = -EIO; /* bad smb */ + else { + response_data = + (FILE_SYSTEM_INFO + *) (((char *) &pSMBr->hdr.Protocol) + + pSMBr->DataOffset); + FSData->f_bsize = + le32_to_cpu(response_data->BytesPerSector) * + le32_to_cpu(response_data-> + SectorsPerAllocationUnit); + FSData->f_blocks = + le64_to_cpu(response_data->TotalAllocationUnits); + FSData->f_bfree = FSData->f_bavail = + le64_to_cpu(response_data->FreeAllocationUnits); + cFYI(1, + ("Blocks: %lld Free: %lld Block size %ld", + (unsigned long long)FSData->f_blocks, + (unsigned long long)FSData->f_bfree, + FSData->f_bsize)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto QFSInfoRetry; + + return rc; +} + +int +CIFSSMBQFSAttributeInfo(int xid, struct cifsTconInfo *tcon, + const struct nls_table *nls_codepage) +{ +/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ + TRANSACTION2_QFSI_REQ *pSMB = NULL; + TRANSACTION2_QFSI_RSP *pSMBr = NULL; + FILE_SYSTEM_ATTRIBUTE_INFO *response_data; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In QFSAttributeInfo")); +QFSAttributeRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->TotalParameterCount = 2; /* level */ + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + if ((pSMBr->ByteCount < 13) || (pSMBr->DataOffset > 512)) { /* BB also check enough bytes returned */ + rc = -EIO; /* bad smb */ + } else { + response_data = + (FILE_SYSTEM_ATTRIBUTE_INFO + *) (((char *) &pSMBr->hdr.Protocol) + + pSMBr->DataOffset); + response_data->Attributes = le32_to_cpu(response_data->Attributes); + response_data->MaxPathNameComponentLength = + le32_to_cpu(response_data->MaxPathNameComponentLength); + response_data->FileSystemNameLen = + le32_to_cpu(response_data->FileSystemNameLen); + memcpy(&tcon->fsAttrInfo, response_data, + sizeof (FILE_SYSTEM_ATTRIBUTE_INFO)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto QFSAttributeRetry; + + return rc; +} + +int +CIFSSMBQFSDeviceInfo(int xid, struct cifsTconInfo *tcon, + const struct nls_table *nls_codepage) +{ +/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ + TRANSACTION2_QFSI_REQ *pSMB = NULL; + TRANSACTION2_QFSI_RSP *pSMBr = NULL; + FILE_SYSTEM_DEVICE_INFO *response_data; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In QFSDeviceInfo")); +QFSDeviceRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->TotalParameterCount = 2; /* level */ + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); + + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + if ((pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO)) + || (pSMBr->DataOffset > 512)) + rc = -EIO; /* bad smb */ + else { + response_data = + (FILE_SYSTEM_DEVICE_INFO + *) (((char *) &pSMBr->hdr.Protocol) + + pSMBr->DataOffset); + response_data->DeviceType = + le32_to_cpu(response_data->DeviceType); + response_data->DeviceCharacteristics = + le32_to_cpu(response_data->DeviceCharacteristics); + memcpy(&tcon->fsDevInfo, response_data, + sizeof (FILE_SYSTEM_DEVICE_INFO)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto QFSDeviceRetry; + + return rc; +} + +int +CIFSSMBQFSUnixInfo(int xid, struct cifsTconInfo *tcon, + const struct nls_table *nls_codepage) +{ +/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ + TRANSACTION2_QFSI_REQ *pSMB = NULL; + TRANSACTION2_QFSI_RSP *pSMBr = NULL; + FILE_SYSTEM_UNIX_INFO *response_data; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In QFSUnixInfo")); +QFSUnixRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->ParameterCount = 2; /* level */ + pSMB->TotalDataCount = 0; + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ByteCount = pSMB->ParameterCount + 1 /* pad */ ; + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->ParameterOffset = cpu_to_le16(offsetof(struct + smb_com_transaction2_qfsi_req, InformationLevel) - 4); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = cpu_to_le16(pSMBr->DataOffset); + if ((pSMBr->ByteCount < 13) || (pSMBr->DataOffset > 512)) { + rc = -EIO; /* bad smb */ + } else { + response_data = + (FILE_SYSTEM_UNIX_INFO + *) (((char *) &pSMBr->hdr.Protocol) + + pSMBr->DataOffset); + response_data->MajorVersionNumber = + le16_to_cpu(response_data->MajorVersionNumber); + response_data->MinorVersionNumber = + le16_to_cpu(response_data->MinorVersionNumber); + response_data->Capability = + le64_to_cpu(response_data->Capability); + memcpy(&tcon->fsUnixInfo, response_data, + sizeof (FILE_SYSTEM_UNIX_INFO)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto QFSUnixRetry; + + + return rc; +} + +/* We can not use write of zero bytes trick to + set file size due to need for large file support. Also note that + this SetPathInfo is preferred to SetFileInfo based method in next + routine which is only needed to work around a sharing violation bug + in Samba which this routine can run into */ + +int +CIFSSMBSetEOF(int xid, struct cifsTconInfo *tcon, char *fileName, + __u64 size, int SetAllocation, const struct nls_table *nls_codepage) +{ + struct smb_com_transaction2_spi_req *pSMB = NULL; + struct smb_com_transaction2_spi_rsp *pSMBr = NULL; + struct file_end_of_file_info *parm_data; + int name_len; + int rc = 0; + int bytes_returned = 0; + + cFYI(1, ("In SetEOF")); +SetEOFRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fileName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, fileName, name_len); + } + pSMB->ParameterCount = 6 + name_len; + pSMB->DataCount = sizeof (struct file_end_of_file_info); + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_spi_req, + InformationLevel) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + if(SetAllocation) { + if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); + else + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); + } else /* Set File Size */ { + if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); + else + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); + } + + parm_data = + (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + + pSMB->DataOffset); + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount + pSMB->DataCount; + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + parm_data->FileSize = cpu_to_le64(size); + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("SetPathInfo (file size) returned %d", rc)); + } + + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto SetEOFRetry; + + return rc; +} + +int +CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, + __u16 fid, __u32 pid_of_opener, int SetAllocation) +{ + struct smb_com_transaction2_sfi_req *pSMB = NULL; + struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; + char *data_offset; + struct file_end_of_file_info *parm_data; + int rc = 0; + int bytes_returned = 0; + __u32 tmp; + + cFYI(1, ("SetFileSize (via SetFileInfo) %lld", + (long long)size)); + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + tmp = cpu_to_le32(pid_of_opener); /* override pid of current process + so network fid will be valid */ + pSMB->hdr.Pid = tmp & 0xFFFF; + tmp >>= 16; + pSMB->hdr.PidHigh = tmp & 0xFFFF; + + pSMB->ParameterCount = 6; + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_sfi_req, + Fid) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + + data_offset = (char *) (&pSMB->hdr.Protocol) + pSMB->DataOffset; + + pSMB->DataCount = sizeof(struct file_end_of_file_info); + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount + pSMB->DataCount; + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + parm_data = + (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + + pSMB->DataOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); /* now safe to change to le */ + parm_data->FileSize = cpu_to_le64(size); + pSMB->Fid = fid; + if(SetAllocation) { + if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); + else + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); + } else /* Set File Size */ { + if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); + else + pSMB->InformationLevel = + cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); + } + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, + ("Send error in SetFileInfo (SetFileSize) = %d", + rc)); + } + + if (pSMB) + cifs_buf_release(pSMB); + + /* Note: On -EAGAIN error only caller can retry on handle based calls + since file handle passed in no longer valid */ + + return rc; +} + +int +CIFSSMBSetTimes(int xid, struct cifsTconInfo *tcon, char *fileName, + FILE_BASIC_INFO * data, const struct nls_table *nls_codepage) +{ + TRANSACTION2_SPI_REQ *pSMB = NULL; + TRANSACTION2_SPI_RSP *pSMBr = NULL; + int name_len; + int rc = 0; + int bytes_returned = 0; + char *data_offset; + + cFYI(1, ("In SetTimes")); + +SetTimesRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fileName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, fileName, name_len); + } + + pSMB->ParameterCount = 6 + name_len; + pSMB->DataCount = sizeof (FILE_BASIC_INFO); + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_spi_req, + InformationLevel) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + data_offset = (char *) (&pSMB->hdr.Protocol) + pSMB->DataOffset; + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount + pSMB->DataCount; + + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->TotalParameterCount = pSMB->ParameterCount; + if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) + pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); + else + pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + memcpy(data_offset, data, sizeof (FILE_BASIC_INFO)); + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("SetPathInfo (times) returned %d", rc)); + } + + if (pSMB) + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto SetTimesRetry; + + return rc; +} + +int +CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon, + char *fileName, __u64 mode, __u64 uid, __u64 gid, + dev_t device, const struct nls_table *nls_codepage) +{ + TRANSACTION2_SPI_REQ *pSMB = NULL; + TRANSACTION2_SPI_RSP *pSMBr = NULL; + int name_len; + int rc = 0; + int bytes_returned = 0; + FILE_UNIX_BASIC_INFO *data_offset; + + cFYI(1, ("In SetUID/GID/Mode")); +setPermsRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(fileName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, fileName, name_len); + } + + pSMB->ParameterCount = 6 + name_len; + pSMB->DataCount = sizeof (FILE_UNIX_BASIC_INFO); + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = offsetof(struct smb_com_transaction2_spi_req, + InformationLevel) - 4; + pSMB->DataOffset = pSMB->ParameterOffset + pSMB->ParameterCount; + data_offset = + (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + + pSMB->DataOffset); + pSMB->DataOffset = cpu_to_le16(pSMB->DataOffset); + pSMB->ParameterOffset = cpu_to_le16(pSMB->ParameterOffset); + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); + pSMB->ByteCount = 3 /* pad */ + pSMB->ParameterCount + pSMB->DataCount; + pSMB->ParameterCount = cpu_to_le16(pSMB->ParameterCount); + pSMB->DataCount = cpu_to_le16(pSMB->DataCount); + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + data_offset->Uid = cpu_to_le64(uid); + data_offset->Gid = cpu_to_le64(gid); + /* better to leave device as zero when it is */ + data_offset->DevMajor = cpu_to_le64(MAJOR(device)); + data_offset->DevMinor = cpu_to_le64(MINOR(device)); + data_offset->Permissions = cpu_to_le64(mode); + + if(S_ISREG(mode)) + data_offset->Type = cpu_to_le32(UNIX_FILE); + else if(S_ISDIR(mode)) + data_offset->Type = cpu_to_le32(UNIX_DIR); + else if(S_ISLNK(mode)) + data_offset->Type = cpu_to_le32(UNIX_SYMLINK); + else if(S_ISCHR(mode)) + data_offset->Type = cpu_to_le32(UNIX_CHARDEV); + else if(S_ISBLK(mode)) + data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); + else if(S_ISFIFO(mode)) + data_offset->Type = cpu_to_le32(UNIX_FIFO); + else if(S_ISSOCK(mode)) + data_offset->Type = cpu_to_le32(UNIX_SOCKET); + + + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("SetPathInfo (perms) returned %d", rc)); + } + + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto setPermsRetry; + return rc; +} + +int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, + const int notify_subdirs, const __u16 netfid, + __u32 filter, const struct nls_table *nls_codepage) +{ + int rc = 0; + struct smb_com_transaction_change_notify_req * pSMB = NULL; + struct smb_com_transaction_change_notify_rsp * pSMBr = NULL; + int bytes_returned; + + cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid)); + rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + pSMB->TotalParameterCount = 0 ; + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le32(2); + /* BB find exact data count max from sess structure BB */ + pSMB->MaxDataCount = 0; /* same in little endian or be */ + pSMB->MaxSetupCount = 4; + pSMB->Reserved = 0; + pSMB->ParameterOffset = 0; + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 4; /* single byte does not need le conversion */ + pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); + pSMB->ParameterCount = pSMB->TotalParameterCount; + if(notify_subdirs) + pSMB->WatchTree = 1; /* one byte - no le conversion needed */ + pSMB->Reserved2 = 0; + pSMB->CompletionFilter = cpu_to_le32(filter); + pSMB->Fid = netfid; /* file handle always le */ + pSMB->ByteCount = 0; + + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Error in Notify = %d", rc)); + } + if (pSMB) + cifs_buf_release(pSMB); +/* if (rc == -EAGAIN) + goto NotifyRetry; */ + return rc; +} +#ifdef CONFIG_CIFS_XATTR +int +CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, + const unsigned char *searchName, + char * EAData, size_t size, + const struct nls_table *nls_codepage) +{ + /* BB assumes one setup word */ + TRANSACTION2_QPI_REQ *pSMB = NULL; + TRANSACTION2_QPI_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned; + int name_len; + + cFYI(1, ("In Query All EAs path %s", searchName)); +QAllEAsRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len = + cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, 530 + /* find define for this maxpathcomponent */ + , nls_codepage); + name_len++; /* trailing null */ + name_len *= 2; + } else { /* BB improve the check for buffer overruns BB */ + name_len = strnlen(searchName, 530); + name_len++; /* trailing null */ + strncpy(pSMB->FileName, searchName, name_len); + } + + pSMB->TotalParameterCount = 2 /* level */ + 4 /* reserved */ + + name_len /* includes null */ ; + pSMB->TotalDataCount = 0; + pSMB->MaxParameterCount = cpu_to_le16(2); + pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + pSMB->ParameterOffset = cpu_to_le16(offsetof( + struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); + pSMB->DataCount = 0; + pSMB->DataOffset = 0; + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); + pSMB->ByteCount = pSMB->TotalParameterCount + 1 /* pad */ ; + pSMB->TotalParameterCount = cpu_to_le16(pSMB->TotalParameterCount); + pSMB->ParameterCount = pSMB->TotalParameterCount; + pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); + pSMB->Reserved4 = 0; + pSMB->hdr.smb_buf_length += pSMB->ByteCount; + pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QueryAllEAs = %d", rc)); + } else { /* decode response */ + pSMBr->DataOffset = le16_to_cpu(pSMBr->DataOffset); + /* BB also check enough total bytes returned */ + /* BB we need to improve the validity checking + of these trans2 responses */ + if ((pSMBr->ByteCount < 4) || (pSMBr->DataOffset > 512)) + rc = -EIO; /* bad smb */ + /* else if (pFindData){ + memcpy((char *) pFindData, + (char *) &pSMBr->hdr.Protocol + + pSMBr->DataOffset, kl); + }*/ else { + /* check that length of list is not more than bcc */ + /* check that each entry does not go beyond length + of list */ + /* check that each element of each entry does not + go beyond end of list */ + struct fealist * ea_response_data; + rc = 0; + /* validate_trans2_offsets() */ + /* BB to check if(start of smb + pSMBr->DataOffset > &bcc+ bcc)*/ + ea_response_data = (struct fealist *) + (((char *) &pSMBr->hdr.Protocol) + + pSMBr->DataOffset); + cFYI(1,("ea length %d",ea_response_data->list_len)); + } + } + if (pSMB) + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto QAllEAsRetry; + + return rc; +} +#endif |