/*
* 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 */
#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"
static struct {
int index;
char *name;
} protocols[] = {
{
CIFS_PROT, "\2NT LM 0.12"}, {
BAD_PROT, "\2"}
};
int
smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
void **request_buf /* returned */ ,
void **response_buf /* returned */ )
{
int rc = 0;
if(tcon && (tcon->tidStatus == CifsNeedReconnect)) {
rc = -EIO;
if(tcon->ses) {
struct nls_table *nls_codepage = load_nls_default();
if(tcon->ses->status == CifsNeedReconnect)
rc = setup_session(0, tcon->ses, nls_codepage);
if(!rc) {
rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon,
nls_codepage);
cFYI(1, ("reconnect tcon rc = %d", rc));
if(!rc)
reopen_files(tcon,nls_codepage);
}
unload_nls(nls_codepage);
}
}
if(rc)
return rc;
*request_buf = buf_get();
if (request_buf == 0) {
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 */ );
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, 0 /* 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)
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;
}
/* BB remove (from server) list of shares - but with smp safety BB */
/* BB is ses active - do we need to check here - but how? BB */
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)
buf_release(smb_buffer);
up(&tcon->tconSem);
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); /* check this sem more places */
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, 0 /* 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)
ses->server->tcpStatus = CifsExiting;
}
if (pSMB)
buf_release(pSMB);
up(&ses->sesSem);
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;
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));
}
if (pSMB)
buf_release(pSMB);
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"));
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));
}
if (pSMB)
buf_release(pSMB);
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"));
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));
}
if (pSMB)
buf_release(pSMB);
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;
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 */
/*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 */
/* Do we care about the CreateAction in any cases? */
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);
}
}
if (pSMB)
buf_release(pSMB);
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)
buf_release(pSMB);
else
*buf = (char *)pSMB;
}
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) {
cERROR(1, ("Send error in write = %d", rc));
*nbytes = 0;
} else
*nbytes = le16_to_cpu(pSMBr->Count);
if (pSMB)
buf_release(pSMB);
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;
cFYI(1, ("In CIFSSMBLock"));
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->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 */
pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
pSMB->Locks[0].Length = cpu_to_le64(len);
pSMB->Locks[0].Offset = cpu_to_le64(offset);
pSMB->ByteCount = sizeof (LOCKING_ANDX_RANGE);
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) {
cERROR(1, ("Send error in Lock = %d", rc));
}
if (pSMB)
buf_release(pSMB);
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"));
rc = smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB,
(void **) &pSMBr);
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) {
cERROR(1, ("Send error in Close = %d", rc));
}
if (pSMB)
buf_release(pSMB);
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"));
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;
/* we could also set search attributes but not needed */
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));
}
if (pSMB)
buf_release(pSMB);
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));
}
if (pSMB)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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));
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)
buf_release(pSMB);
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_le16(2);
/* BB find exact data count max from sess structure BB */
pSMB->MaxDataCount = cpu_to_le16(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)
buf_release(pSMB);
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));
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 */
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)
buf_release(pSMB);
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;
int name_len;
cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
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 < 40) || (pSMBr->DataOffset > 512))
rc = -EIO; /* bad smb */
else {
memcpy((char *) pFindData,
(char *) &pSMBr->hdr.Protocol +
pSMBr->DataOffset,
sizeof (FILE_UNIX_BASIC_INFO));
}
}
if (pSMB)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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)
buf_release(pSMB);
return rc;
}
int
CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle)
{
int rc = 0;
FINDCLOSE_REQ *pSMB = NULL;
CLOSE_RSP *pSMBr = NULL;
int bytes_returned;
cFYI(1, ("In CIFSSMBFindClose"));
rc = smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **) &pSMB,
(void **) &pSMBr);
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)
buf_release(pSMB);
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;
rc = smb_init(SMB_COM_TRANSACTION2, 15, 0, (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)
buf_release(pSMB);
return rc;
}
int
CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
struct kstatfs *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"));
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)
buf_release(pSMB);
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"));
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);
memcpy(&tcon->fsAttrInfo, response_data,
sizeof (FILE_SYSTEM_ATTRIBUTE_INFO));
}
}
if (pSMB)
buf_release(pSMB);
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"));
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);
memcpy(&tcon->fsDevInfo, response_data,
sizeof (FILE_SYSTEM_DEVICE_INFO));
}
}
if (pSMB)
buf_release(pSMB);
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"));
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);
memcpy(&tcon->fsUnixInfo, response_data,
sizeof (FILE_SYSTEM_UNIX_INFO));
}
}
if (pSMB)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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)"));
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 = 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)
buf_release(pSMB);
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"));
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)
buf_release(pSMB);
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"));
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);
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)
buf_release(pSMB);
return rc;
}
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