cifssmb.c 146.1 KB
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/*
 *   fs/cifs/cifssmb.c
 *
 *   Copyright (C) International Business Machines  Corp., 2002,2005
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   Contains the routines for constructing the SMB PDUs themselves
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

 /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c   */
 /* These are mostly routines that operate on a pathname, or on a tree id     */
 /* (mounted volume), but there are eight handle based routines which must be */
 /* treated slightly different for reconnection purposes since we never want  */
 /* to reuse a stale file handle and the caller knows the file handle */

#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/vfs.h>
#include <linux/posix_acl_xattr.h>
#include <asm/uaccess.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_unicode.h"
#include "cifs_debug.h"

#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);
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	/* BB Add call to invalidate_inodes(sb) for all superblocks mounted
	   to this tcon */
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}

/* If the return code is zero, this function must fill in request_buf pointer */
static int
small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
	 void **request_buf /* returned */)
{
	int rc = 0;

	/* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
	   check for tcp and smb session status done differently
	   for those three - in the calling routine */
	if(tcon) {
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		if(tcon->tidStatus == CifsExiting) {
			/* only tree disconnect, open, and write,
			(and ulogoff which does not have tcon)
			are allowed as we start force umount */
			if((smb_command != SMB_COM_WRITE_ANDX) && 
			   (smb_command != SMB_COM_OPEN_ANDX) && 
			   (smb_command != SMB_COM_TREE_DISCONNECT)) {
				cFYI(1,("can not send cmd %d while umounting",
					smb_command));
				return -ENODEV;
			}
		}
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		if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
				  (tcon->ses->server)){
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			struct nls_table *nls_codepage;
				/* Give Demultiplex thread up to 10 seconds to 
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				   reconnect, should be greater than cifs socket
				   timeout which is 7 seconds */
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			while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
				wait_event_interruptible_timeout(tcon->ses->server->response_q,
					(tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
				if(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
					/* on "soft" mounts we wait once */
					if((tcon->retry == FALSE) || 
					   (tcon->ses->status == CifsExiting)) {
						cFYI(1,("gave up waiting on reconnect in smb_init"));
						return -EHOSTDOWN;
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					} /* else "hard" mount - keep retrying
					     until process is killed or server
					     comes back on-line */
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				} 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)
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				rc = cifs_setup_session(0, tcon->ses, 
							nls_codepage);
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			if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
				mark_open_files_invalid(tcon);
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				rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon
					, nls_codepage);
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				up(&tcon->ses->sesSem);
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				/* BB FIXME add code to check if wsize needs
				   update due to negotiated smb buffer size
				   shrinking */
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				if(rc == 0)
					atomic_inc(&tconInfoReconnectCount);

				cFYI(1, ("reconnect tcon rc = %d", rc));
				/* Removed call to reopen open files here - 
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				   it is safer (and faster) to reopen files
				   one at a time as needed in read and write */
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				/* Check if handle based operation so we 
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				   know whether we can continue or not without
				   returning to caller to reset file handle */
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				switch(smb_command) {
					case SMB_COM_READ_ANDX:
					case SMB_COM_WRITE_ANDX:
					case SMB_COM_CLOSE:
					case SMB_COM_FIND_CLOSE2:
					case SMB_COM_LOCKING_ANDX: {
						unload_nls(nls_codepage);
						return -EAGAIN;
					}
				}
			} else {
				up(&tcon->ses->sesSem);
			}
			unload_nls(nls_codepage);

		} else {
			return -EIO;
		}
	}
	if(rc)
		return rc;

	*request_buf = cifs_small_buf_get();
	if (*request_buf == NULL) {
		/* BB should we add a retry in here if not a writepage? */
		return -ENOMEM;
	}

	header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct);

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        if(tcon != NULL)
                cifs_stats_inc(&tcon->num_smbs_sent);

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	return rc;
}  

/* If the return code is zero, this function must fill in request_buf pointer */
static int
smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
	 void **request_buf /* returned */ ,
	 void **response_buf /* returned */ )
{
	int rc = 0;

	/* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
	   check for tcp and smb session status done differently
	   for those three - in the calling routine */
	if(tcon) {
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		if(tcon->tidStatus == CifsExiting) {
			/* only tree disconnect, open, and write,
			  (and ulogoff which does not have tcon)
			  are allowed as we start force umount */
			if((smb_command != SMB_COM_WRITE_ANDX) &&
			   (smb_command != SMB_COM_OPEN_ANDX) &&
			   (smb_command != SMB_COM_TREE_DISCONNECT)) {
				cFYI(1,("can not send cmd %d while umounting",
					smb_command));
				return -ENODEV;
			}
		}

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		if((tcon->ses) && (tcon->ses->status != CifsExiting) && 
				  (tcon->ses->server)){
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			struct nls_table *nls_codepage;
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				/* Give Demultiplex thread up to 10 seconds to
				   reconnect, should be greater than cifs socket
				   timeout which is 7 seconds */
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			while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
				wait_event_interruptible_timeout(tcon->ses->server->response_q,
					(tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
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				if(tcon->ses->server->tcpStatus == 
						CifsNeedReconnect) {
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					/* 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;
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					} /* else "hard" mount - keep retrying
					     until process is killed or server
					     comes on-line */
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				} 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)
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				rc = cifs_setup_session(0, tcon->ses, 
							nls_codepage);
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			if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
				mark_open_files_invalid(tcon);
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				rc = CIFSTCon(0, tcon->ses, tcon->treeName,
					      tcon, nls_codepage);
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				up(&tcon->ses->sesSem);
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				/* BB FIXME add code to check if wsize needs
				update due to negotiated smb buffer size
				shrinking */
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				if(rc == 0)
					atomic_inc(&tconInfoReconnectCount);

				cFYI(1, ("reconnect tcon rc = %d", rc));
				/* Removed call to reopen open files here - 
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				   it is safer (and faster) to reopen files
				   one at a time as needed in read and write */
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				/* Check if handle based operation so we 
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				   know whether we can continue or not without
				   returning to caller to reset file handle */
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				switch(smb_command) {
					case SMB_COM_READ_ANDX:
					case SMB_COM_WRITE_ANDX:
					case SMB_COM_CLOSE:
					case SMB_COM_FIND_CLOSE2:
					case SMB_COM_LOCKING_ANDX: {
						unload_nls(nls_codepage);
						return -EAGAIN;
					}
				}
			} else {
				up(&tcon->ses->sesSem);
			}
			unload_nls(nls_codepage);

		} else {
			return -EIO;
		}
	}
	if(rc)
		return rc;

	*request_buf = cifs_buf_get();
	if (*request_buf == NULL) {
		/* BB should we add a retry in here if not a writepage? */
		return -ENOMEM;
	}
    /* Although the original thought was we needed the response buf for  */
    /* potential retries of smb operations it turns out we can determine */
    /* from the mid flags when the request buffer can be resent without  */
    /* having to use a second distinct buffer for the response */
	*response_buf = *request_buf; 

	header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
			wct /*wct */ );

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        if(tcon != NULL)
                cifs_stats_inc(&tcon->num_smbs_sent);

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	return rc;
}

static int validate_t2(struct smb_t2_rsp * pSMB) 
{
	int rc = -EINVAL;
	int total_size;
	char * pBCC;

	/* check for plausible wct, bcc and t2 data and parm sizes */
	/* check for parm and data offset going beyond end of smb */
	if(pSMB->hdr.WordCount >= 10) {
		if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) &&
		   (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) {
			/* check that bcc is at least as big as parms + data */
			/* check that bcc is less than negotiated smb buffer */
			total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount);
			if(total_size < 512) {
				total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount);
				/* BCC le converted in SendReceive */
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				pBCC = (pSMB->hdr.WordCount * 2) + 
					sizeof(struct smb_hdr) +
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					(char *)pSMB;
				if((total_size <= (*(u16 *)pBCC)) && 
				   (total_size < 
					CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) {
					return 0;
				}
				
			}
		}
	}
	cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB,
		sizeof(struct smb_t2_rsp) + 16);
	return rc;
}
int
CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
{
	NEGOTIATE_REQ *pSMB;
	NEGOTIATE_RSP *pSMBr;
	int rc = 0;
	int bytes_returned;
	struct TCP_Server_Info * server;
	u16 count;

	if(ses->server)
		server = ses->server;
	else {
		rc = -EIO;
		return rc;
	}
	rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
		      (void **) &pSMB, (void **) &pSMBr);
	if (rc)
		return rc;
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	pSMB->hdr.Mid = GetNextMid(server);
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	pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
	if (extended_security)
		pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;

	count = strlen(protocols[0].name) + 1;
	strncpy(pSMB->DialectsArray, protocols[0].name, 30);	
    /* null guaranteed to be at end of source and target buffers anyway */

	pSMB->hdr.smb_buf_length += count;
	pSMB->ByteCount = cpu_to_le16(count);

	rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc == 0) {
		server->secMode = pSMBr->SecurityMode;	
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		server->secType = NTLM; /* BB override default for 
					   NTLMv2 or kerberos v5 */
		/* one byte - no need to convert this or EncryptionKeyLen
		   from little endian */
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		server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount);
		/* probably no need to store and check maxvcs */
		server->maxBuf =
			min(le32_to_cpu(pSMBr->MaxBufferSize),
			(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
		server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
		cFYI(0, ("Max buf = %d ", ses->server->maxBuf));
		GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
		server->capabilities = le32_to_cpu(pSMBr->Capabilities);
		server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);	
        /* BB with UTC do we ever need to be using srvr timezone? */
		if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
			memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
			       CIFS_CRYPTO_KEY_SIZE);
		} else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
			   && (pSMBr->EncryptionKeyLength == 0)) {
			/* decode security blob */
		} else
			rc = -EIO;

		/* BB might be helpful to save off the domain of server here */

		if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && 
			(server->capabilities & CAP_EXTENDED_SECURITY)) {
			count = pSMBr->ByteCount;
			if (count < 16)
				rc = -EIO;
			else if (count == 16) {
				server->secType = RawNTLMSSP;
				if (server->socketUseCount.counter > 1) {
					if (memcmp
						(server->server_GUID,
						pSMBr->u.extended_response.
						GUID, 16) != 0) {
						cFYI(1,
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						     ("UID of server does not match previous connection to same ip address"));
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						memcpy(server->
							server_GUID,
							pSMBr->u.
							extended_response.
							GUID, 16);
					}
				} else
					memcpy(server->server_GUID,
					       pSMBr->u.extended_response.
					       GUID, 16);
			} else {
				rc = decode_negTokenInit(pSMBr->u.
							 extended_response.
							 SecurityBlob,
							 count - 16,
							 &server->secType);
				if(rc == 1) {
				/* BB Need to fill struct for sessetup here */
					rc = -EOPNOTSUPP;
				} else {
					rc = -EINVAL;
				}
			}
		} else
			server->capabilities &= ~CAP_EXTENDED_SECURITY;
		if(sign_CIFS_PDUs == FALSE) {        
			if(server->secMode & SECMODE_SIGN_REQUIRED)
				cERROR(1,
				 ("Server requires /proc/fs/cifs/PacketSigningEnabled"));
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			server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
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		} else if(sign_CIFS_PDUs == 1) {
			if((server->secMode & SECMODE_SIGN_REQUIRED) == 0)
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				server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
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		}
				
	}
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	cifs_buf_release(pSMB);
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	return rc;
}

int
CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
{
	struct smb_hdr *smb_buffer;
	struct smb_hdr *smb_buffer_response; /* BB removeme BB */
	int rc = 0;
	int length;

	cFYI(1, ("In tree disconnect"));
	/*
	 *  If last user of the connection and
	 *  connection alive - disconnect it
	 *  If this is the last connection on the server session disconnect it
	 *  (and inside session disconnect we should check if tcp socket needs 
	 *  to be freed and kernel thread woken up).
	 */
	if (tcon)
		down(&tcon->tconSem);
	else
		return -EIO;

	atomic_dec(&tcon->useCount);
	if (atomic_read(&tcon->useCount) > 0) {
		up(&tcon->tconSem);
		return -EBUSY;
	}

	/* No need to return error on this operation if tid invalidated and 
	closed on server already e.g. due to tcp session crashing */
	if(tcon->tidStatus == CifsNeedReconnect) {
		up(&tcon->tconSem);
		return 0;  
	}

	if((tcon->ses == NULL) || (tcon->ses->server == NULL)) {    
		up(&tcon->tconSem);
		return -EIO;
	}
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	rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, 
			    (void **)&smb_buffer);
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	if (rc) {
		up(&tcon->tconSem);
		return rc;
	} else {
		smb_buffer_response = smb_buffer; /* BB removeme BB */
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	}
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	rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response,
			 &length, 0);
	if (rc)
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		cFYI(1, ("Tree disconnect failed %d", rc));
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	if (smb_buffer)
		cifs_small_buf_release(smb_buffer);
	up(&tcon->tconSem);

	/* No need to return error on this operation if tid invalidated and 
	closed on server already e.g. due to tcp session crashing */
	if (rc == -EAGAIN)
		rc = 0;

	return rc;
}

int
CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
{
	struct smb_hdr *smb_buffer_response;
	LOGOFF_ANDX_REQ *pSMB;
	int rc = 0;
	int length;

	cFYI(1, ("In SMBLogoff for session disconnect"));
	if (ses)
		down(&ses->sesSem);
	else
		return -EIO;

	atomic_dec(&ses->inUse);
	if (atomic_read(&ses->inUse) > 0) {
		up(&ses->sesSem);
		return -EBUSY;
	}
	rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
	if (rc) {
		up(&ses->sesSem);
		return rc;
	}

	smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */
	
	if(ses->server) {
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		pSMB->hdr.Mid = GetNextMid(ses->server);

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		if(ses->server->secMode & 
		   (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
			pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
	}

	pSMB->hdr.Uid = ses->Suid;

	pSMB->AndXCommand = 0xFF;
	rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
			 smb_buffer_response, &length, 0);
	if (ses->server) {
		atomic_dec(&ses->server->socketUseCount);
		if (atomic_read(&ses->server->socketUseCount) == 0) {
			spin_lock(&GlobalMid_Lock);
			ses->server->tcpStatus = CifsExiting;
			spin_unlock(&GlobalMid_Lock);
			rc = -ESHUTDOWN;
		}
	}
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	up(&ses->sesSem);
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	cifs_small_buf_release(pSMB);
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	/* 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
581 582
CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
	       const struct nls_table *nls_codepage, int remap)
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{
	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 =
598
		    cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, 
599
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
602
	} else {		/* BB improve check for buffer overruns BB */
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		name_len = strnlen(fileName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->fileName, fileName, name_len);
	}
	pSMB->SearchAttributes =
	    cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
	pSMB->BufferFormat = 0x04;
	pSMB->hdr.smb_buf_length += name_len + 1;
	pSMB->ByteCount = cpu_to_le16(name_len + 1);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
614
	cifs_stats_inc(&tcon->num_deletes);
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	if (rc) {
		cFYI(1, ("Error in RMFile = %d", rc));
	} 

	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto DelFileRetry;

	return rc;
}

int
627 628
CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, 
	     const struct nls_table *nls_codepage, int remap)
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{
	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) {
644 645
		name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName,
					 PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
648
	} else {		/* BB improve check for buffer overruns BB */
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		name_len = strnlen(dirName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->DirName, dirName, name_len);
	}

	pSMB->BufferFormat = 0x04;
	pSMB->hdr.smb_buf_length += name_len + 1;
	pSMB->ByteCount = cpu_to_le16(name_len + 1);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
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	cifs_stats_inc(&tcon->num_rmdirs);
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	if (rc) {
		cFYI(1, ("Error in RMDir = %d", rc));
	}

	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto RmDirRetry;
	return rc;
}

int
CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
672
	     const char *name, const struct nls_table *nls_codepage, int remap)
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{
	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) {
688
		name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, 
689
					    PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
692
	} else {		/* BB improve check for buffer overruns BB */
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		name_len = strnlen(name, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->DirName, name, name_len);
	}

	pSMB->BufferFormat = 0x04;
	pSMB->hdr.smb_buf_length += name_len + 1;
	pSMB->ByteCount = cpu_to_le16(name_len + 1);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
703
	cifs_stats_inc(&tcon->num_mkdirs);
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	if (rc) {
		cFYI(1, ("Error in Mkdir = %d", rc));
	}
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	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto MkDirRetry;
	return rc;
}

714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799
static __u16 convert_disposition(int disposition)
{
	__u16 ofun = 0;

	switch (disposition) {
		case FILE_SUPERSEDE:
			ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
			break;
		case FILE_OPEN:
			ofun = SMBOPEN_OAPPEND;
			break;
		case FILE_CREATE:
			ofun = SMBOPEN_OCREATE;
			break;
		case FILE_OPEN_IF:
			ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND;
			break;
		case FILE_OVERWRITE:
			ofun = SMBOPEN_OTRUNC;
			break;
		case FILE_OVERWRITE_IF:
			ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
			break;
		default:
			cFYI(1,("unknown disposition %d",disposition));
			ofun =  SMBOPEN_OAPPEND; /* regular open */
	}
	return ofun;
}

int
SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
	    const char *fileName, const int openDisposition,
	    const int access_flags, const int create_options, __u16 * netfid,
            int *pOplock, FILE_ALL_INFO * pfile_info,
	    const struct nls_table *nls_codepage, int remap)
{
	int rc = -EACCES;
	OPENX_REQ *pSMB = NULL;
	OPENX_RSP *pSMBr = NULL;
	int bytes_returned;
	int name_len;
	__u16 count;

OldOpenRetry:
	rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	pSMB->AndXCommand = 0xFF;       /* none */

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		count = 1;      /* account for one byte pad to word boundary */
		name_len =
		   cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
				    fileName, PATH_MAX, nls_codepage, remap);
		name_len++;     /* trailing null */
		name_len *= 2;
	} else {                /* BB improve check for buffer overruns BB */
		count = 0;      /* no pad */
		name_len = strnlen(fileName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->fileName, fileName, name_len);
	}
	if (*pOplock & REQ_OPLOCK)
		pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK);
	else if (*pOplock & REQ_BATCHOPLOCK) {
		pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK);
	}
	pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO);
	/* BB fixme add conversion for access_flags to bits 0 - 2 of mode */
	/* 0 = read
	   1 = write
	   2 = rw
	   3 = execute
        */
	pSMB->Mode = cpu_to_le16(2);
	pSMB->Mode |= cpu_to_le16(0x40); /* deny none */
	/* set file as system file if special file such
	   as fifo and server expecting SFU style and
	   no Unix extensions */

        if(create_options & CREATE_OPTION_SPECIAL)
                pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
        else
800
                pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); /* BB FIXME */
801 802 803 804 805 806 807 808 809 810

	/* if ((omode & S_IWUGO) == 0)
		pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
	/*  Above line causes problems due to vfs splitting create into two
	    pieces - need to set mode after file created not while it is
	    being created */

	/* BB FIXME BB */
/*	pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); */
	/* BB FIXME END BB */
811 812

	pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
813
	pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841
	count += name_len;
	pSMB->hdr.smb_buf_length += count;

	pSMB->ByteCount = cpu_to_le16(count);
	/* long_op set to 1 to allow for oplock break timeouts */
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
		         (struct smb_hdr *) pSMBr, &bytes_returned, 1);
	cifs_stats_inc(&tcon->num_opens);
	if (rc) {
		cFYI(1, ("Error in Open = %d", rc));
	} else {
	/* BB verify if wct == 15 */

/*		*pOplock = pSMBr->OplockLevel; */  /* BB take from action field BB */

		*netfid = pSMBr->Fid;   /* cifs fid stays in le */
		/* Let caller know file was created so we can set the mode. */
		/* Do we care about the CreateAction in any other cases? */
	/* BB FIXME BB */
/*		if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
			*pOplock |= CIFS_CREATE_ACTION; */
	/* BB FIXME END */

		if(pfile_info) {
			pfile_info->CreationTime = 0; /* BB convert CreateTime*/
			pfile_info->LastAccessTime = 0; /* BB fixme */
			pfile_info->LastWriteTime = 0; /* BB fixme */
			pfile_info->ChangeTime = 0;  /* BB fixme */
842 843
			pfile_info->Attributes =
				cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); 
844
			/* the file_info buf is endian converted by caller */
845 846 847
			pfile_info->AllocationSize =
				cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
			pfile_info->EndOfFile = pfile_info->AllocationSize;
848 849 850 851 852 853 854 855 856 857
			pfile_info->NumberOfLinks = cpu_to_le32(1);
		}
	}

	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto OldOpenRetry;
	return rc;
}

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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, 
863
	    const struct nls_table *nls_codepage, int remap)
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{
	int rc = -EACCES;
	OPEN_REQ *pSMB = NULL;
	OPEN_RSP *pSMBr = NULL;
	int bytes_returned;
	int name_len;
	__u16 count;

openRetry:
	rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	pSMB->AndXCommand = 0xFF;	/* none */

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		count = 1;	/* account for one byte pad to word boundary */
		name_len =
883
		    cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
884
				     fileName, PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
		pSMB->NameLength = cpu_to_le16(name_len);
888
	} else {		/* BB improve check for buffer overruns BB */
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		count = 0;	/* no pad */
		name_len = strnlen(fileName, PATH_MAX);
		name_len++;	/* trailing null */
		pSMB->NameLength = cpu_to_le16(name_len);
		strncpy(pSMB->fileName, fileName, name_len);
	}
	if (*pOplock & REQ_OPLOCK)
		pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
	else if (*pOplock & REQ_BATCHOPLOCK) {
		pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
	}
	pSMB->DesiredAccess = cpu_to_le32(access_flags);
	pSMB->AllocationSize = 0;
902 903 904 905 906 907 908
	/* set file as system file if special file such
	   as fifo and server expecting SFU style and
	   no Unix extensions */
	if(create_options & CREATE_OPTION_SPECIAL)
		pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
	else
		pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
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	/* XP does not handle ATTR_POSIX_SEMANTICS */
	/* but it helps speed up case sensitive checks for other
	servers such as Samba */
	if (tcon->ses->capabilities & CAP_UNIX)
		pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);

	/* if ((omode & S_IWUGO) == 0)
		pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
	/*  Above line causes problems due to vfs splitting create into two
		pieces - need to set mode after file created not while it is
		being created */
	pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
	pSMB->CreateDisposition = cpu_to_le32(openDisposition);
922
	pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
923 924
	/* BB Expirement with various impersonation levels and verify */
	pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
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	pSMB->SecurityFlags =
	    SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;

	count += name_len;
	pSMB->hdr.smb_buf_length += count;

	pSMB->ByteCount = cpu_to_le16(count);
	/* long_op set to 1 to allow for oplock break timeouts */
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 1);
935
	cifs_stats_inc(&tcon->num_opens);
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	if (rc) {
		cFYI(1, ("Error in Open = %d", rc));
	} else {
939
		*pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
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		*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);
		}
	}
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	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto openRetry;
	return rc;
}

int
CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
963 964 965
            const int netfid, const unsigned int count,
            const __u64 lseek, unsigned int *nbytes, char **buf,
	    int * pbuf_type)
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{
	int rc = -EACCES;
	READ_REQ *pSMB = NULL;
	READ_RSP *pSMBr = NULL;
	char *pReadData = NULL;
971
	int wct;
972 973
	int resp_buf_type = 0;
	struct kvec iov[1];
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	cFYI(1,("Reading %d bytes on fid %d",count,netfid));
976 977 978 979
	if(tcon->ses->capabilities & CAP_LARGE_FILES)
		wct = 12;
	else
		wct = 10; /* old style read */
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	*nbytes = 0;
982
	rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
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	if (rc)
		return rc;

	/* tcon and ses pointer are checked in smb_init */
	if (tcon->ses->server == NULL)
		return -ECONNABORTED;

990
	pSMB->AndXCommand = 0xFF;       /* none */
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	pSMB->Fid = netfid;
	pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
993 994
	if(wct == 12)
		pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
995 996
	else if((lseek >> 32) > 0) /* can not handle this big offset for old */
		return -EIO;
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	pSMB->Remaining = 0;
	pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
	pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
1001 1002 1003 1004
	if(wct == 12)
		pSMB->ByteCount = 0;  /* no need to do le conversion since 0 */
	else {
		/* old style read */
1005
		struct smb_com_readx_req * pSMBW =
1006
			(struct smb_com_readx_req *)pSMB;
1007
		pSMBW->ByteCount = 0;
1008
	}
1009 1010 1011 1012 1013 1014

	iov[0].iov_base = (char *)pSMB;
	iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
	rc = SendReceive2(xid, tcon->ses, iov, 
			  1 /* num iovecs */,
			  &resp_buf_type, 0); 
1015
	cifs_stats_inc(&tcon->num_reads);
1016
	pSMBr = (READ_RSP *)iov[0].iov_base;
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	if (rc) {
		cERROR(1, ("Send error in read = %d", rc));
	} else {
		int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
		data_length = data_length << 16;
		data_length += le16_to_cpu(pSMBr->DataLength);
		*nbytes = data_length;

		/*check that DataLength would not go beyond end of SMB */
1026
		if ((data_length > CIFSMaxBufSize)
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				|| (data_length > count)) {
			cFYI(1,("bad length %d for count %d",data_length,count));
			rc = -EIO;
			*nbytes = 0;
		} else {
1032
			pReadData = (char *) (&pSMBr->hdr.Protocol) +
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			    le16_to_cpu(pSMBr->DataOffset);
1034 1035 1036 1037
/*                      if(rc = copy_to_user(buf, pReadData, data_length)) {
                                cERROR(1,("Faulting on read rc = %d",rc));
                                rc = -EFAULT;
                        }*/ /* can not use copy_to_user when using page cache*/
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			if(*buf)
1039
				memcpy(*buf,pReadData,data_length);
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		}
	}

1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
	cifs_small_buf_release(pSMB);
	if(*buf) {
		if(resp_buf_type == CIFS_SMALL_BUFFER)
			cifs_small_buf_release(iov[0].iov_base);
		else if(resp_buf_type == CIFS_LARGE_BUFFER)
			cifs_buf_release(iov[0].iov_base);
	} else /* return buffer to caller to free */ /* BB FIXME how do we tell caller if it is not a large buffer */ {
		*buf = iov[0].iov_base;
		if(resp_buf_type == CIFS_SMALL_BUFFER)
			*pbuf_type = CIFS_SMALL_BUFFER;
		else if(resp_buf_type == CIFS_LARGE_BUFFER)
			*pbuf_type = CIFS_LARGE_BUFFER;
	}

	/* Note: On -EAGAIN error only caller can retry on handle based calls
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		since file handle passed in no longer valid */
	return rc;
}

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int
CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
	     const int netfid, const unsigned int count,
	     const __u64 offset, unsigned int *nbytes, const char *buf,
	     const char __user * ubuf, const int long_op)
{
	int rc = -EACCES;
	WRITE_REQ *pSMB = NULL;
	WRITE_RSP *pSMBr = NULL;
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	int bytes_returned, wct;
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	__u32 bytes_sent;
	__u16 byte_count;

	/* cFYI(1,("write at %lld %d bytes",offset,count));*/
1077 1078 1079 1080 1081 1082 1083 1084 1085
	if(tcon->ses == NULL)
		return -ECONNABORTED;

	if(tcon->ses->capabilities & CAP_LARGE_FILES)
		wct = 14;
	else
		wct = 12;

	rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
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		      (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);
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	if(wct == 14) 
		pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
	else if((offset >> 32) > 0) /* can not handle this big offset for old */
		return -EIO;
	
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	pSMB->Reserved = 0xFFFFFFFF;
	pSMB->WriteMode = 0;
	pSMB->Remaining = 0;

	/* Can increase buffer size if buffer is big enough in some cases - ie we 
	can send more if LARGE_WRITE_X capability returned by the server and if
	our buffer is big enough or if we convert to iovecs on socket writes
	and eliminate the copy to the CIFS buffer */
	if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
		bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
	} else {
		bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
			 & ~0xFF;
	}

	if (bytes_sent > count)
		bytes_sent = count;
	pSMB->DataOffset =
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		cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
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	if(buf)
	    memcpy(pSMB->Data,buf,bytes_sent);
	else if(ubuf) {
		if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) {
			cifs_buf_release(pSMB);
			return -EFAULT;
		}
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	} else if (count != 0) {
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		/* No buffer */
		cifs_buf_release(pSMB);
		return -EINVAL;
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	} /* else setting file size with write of zero bytes */
	if(wct == 14)
		byte_count = bytes_sent + 1; /* pad */
	else /* wct == 12 */ {
		byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */
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	}
	pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
	pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
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	pSMB->hdr.smb_buf_length += byte_count;
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	if(wct == 14)
		pSMB->ByteCount = cpu_to_le16(byte_count);
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	else { /* old style write has byte count 4 bytes earlier so 4 bytes pad  */
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		struct smb_com_writex_req * pSMBW = 
			(struct smb_com_writex_req *)pSMB;
		pSMBW->ByteCount = cpu_to_le16(byte_count);
	}
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	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, long_op);
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	cifs_stats_inc(&tcon->num_writes);
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	if (rc) {
		cFYI(1, ("Send error in write = %d", rc));
		*nbytes = 0;
	} else {
		*nbytes = le16_to_cpu(pSMBr->CountHigh);
		*nbytes = (*nbytes) << 16;
		*nbytes += le16_to_cpu(pSMBr->Count);
	}

	cifs_buf_release(pSMB);

	/* Note: On -EAGAIN error only caller can retry on handle based calls 
		since file handle passed in no longer valid */

	return rc;
}

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int
CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
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	     const int netfid, const unsigned int count,
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	     const __u64 offset, unsigned int *nbytes, struct kvec *iov,
	     int n_vec, const int long_op)
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{
	int rc = -EACCES;
	WRITE_REQ *pSMB = NULL;
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	int wct;
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	int smb_hdr_len;
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	int resp_buf_type = 0;
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	cFYI(1,("write2 at %lld %d bytes", (long long)offset, count));

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	if(tcon->ses->capabilities & CAP_LARGE_FILES)
		wct = 14;
	else
		wct = 12;
	rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
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	if (rc)
		return rc;
	/* tcon and ses pointer are checked in smb_init */
	if (tcon->ses->server == NULL)
		return -ECONNABORTED;

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	pSMB->AndXCommand = 0xFF;	/* none */
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	pSMB->Fid = netfid;
	pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
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	if(wct == 14)
		pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
	else if((offset >> 32) > 0) /* can not handle this big offset for old */
		return -EIO;
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	pSMB->Reserved = 0xFFFFFFFF;
	pSMB->WriteMode = 0;
	pSMB->Remaining = 0;
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	pSMB->DataOffset =
	    cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);

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	pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
	pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
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	smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */
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	if(wct == 14)
		pSMB->hdr.smb_buf_length += count+1;
	else /* wct == 12 */
		pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ 
	if(wct == 14)
		pSMB->ByteCount = cpu_to_le16(count + 1);
	else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
		struct smb_com_writex_req * pSMBW =
				(struct smb_com_writex_req *)pSMB;
		pSMBW->ByteCount = cpu_to_le16(count + 5);
	}
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	iov[0].iov_base = pSMB;
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	if(wct == 14)
		iov[0].iov_len = smb_hdr_len + 4;
	else /* wct == 12 pad bigger by four bytes */
		iov[0].iov_len = smb_hdr_len + 8;
	
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	rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type,
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			  long_op);
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	cifs_stats_inc(&tcon->num_writes);
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	if (rc) {
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		cFYI(1, ("Send error Write2 = %d", rc));
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		*nbytes = 0;
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	} else if(resp_buf_type == 0) {
		/* presumably this can not happen, but best to be safe */
		rc = -EIO;
		*nbytes = 0;
1239
	} else {
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		WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base;
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		*nbytes = le16_to_cpu(pSMBr->CountHigh);
		*nbytes = (*nbytes) << 16;
		*nbytes += le16_to_cpu(pSMBr->Count);
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	} 
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	cifs_small_buf_release(pSMB);
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	if(resp_buf_type == CIFS_SMALL_BUFFER)
		cifs_small_buf_release(iov[0].iov_base);
	else if(resp_buf_type == CIFS_LARGE_BUFFER)
		cifs_buf_release(iov[0].iov_base);
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	/* Note: On -EAGAIN error only caller can retry on handle based calls 
		since file handle passed in no longer valid */

	return rc;
}
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int
CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
	    const __u16 smb_file_id, const __u64 len,
	    const __u64 offset, const __u32 numUnlock,
	    const __u32 numLock, const __u8 lockType, const int waitFlag)
{
	int rc = 0;
	LOCK_REQ *pSMB = NULL;
	LOCK_RSP *pSMBr = NULL;
	int bytes_returned;
	int timeout = 0;
	__u16 count;

	cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock));
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	rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);

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	if (rc)
		return rc;

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	pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */

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	if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
		timeout = -1; /* no response expected */
		pSMB->Timeout = 0;
	} else if (waitFlag == TRUE) {
		timeout = 3;  /* blocking operation, no timeout */
		pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
	} else {
		pSMB->Timeout = 0;
	}

	pSMB->NumberOfLocks = cpu_to_le16(numLock);
	pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
	pSMB->LockType = lockType;
	pSMB->AndXCommand = 0xFF;	/* none */
	pSMB->Fid = smb_file_id; /* netfid stays le */

	if((numLock != 0) || (numUnlock != 0)) {
		pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
		/* BB where to store pid high? */
		pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
		pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
		pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
		pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
		count = sizeof(LOCKING_ANDX_RANGE);
	} else {
		/* oplock break */
		count = 0;
	}
	pSMB->hdr.smb_buf_length += count;
	pSMB->ByteCount = cpu_to_le16(count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
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	cifs_stats_inc(&tcon->num_locks);
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	if (rc) {
		cFYI(1, ("Send error in Lock = %d", rc));
	}
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	cifs_small_buf_release(pSMB);
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	/* Note: On -EAGAIN error only caller can retry on handle based calls 
	since file handle passed in no longer valid */
	return rc;
}

int
CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
{
	int rc = 0;
	CLOSE_REQ *pSMB = NULL;
	CLOSE_RSP *pSMBr = NULL;
	int bytes_returned;
	cFYI(1, ("In CIFSSMBClose"));

/* do not retry on dead session on close */
	rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
	if(rc == -EAGAIN)
		return 0;
	if (rc)
		return rc;

	pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */

	pSMB->FileID = (__u16) smb_file_id;
	pSMB->LastWriteTime = 0;
	pSMB->ByteCount = 0;
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
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	cifs_stats_inc(&tcon->num_closes);
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	if (rc) {
		if(rc!=-EINTR) {
			/* EINTR is expected when user ctl-c to kill app */
			cERROR(1, ("Send error in Close = %d", rc));
		}
	}

	cifs_small_buf_release(pSMB);

	/* Since session is dead, file will be closed on server already */
	if(rc == -EAGAIN)
		rc = 0;

	return rc;
}

int
CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
	      const char *fromName, const char *toName,
1367
	      const struct nls_table *nls_codepage, int remap)
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{
	int rc = 0;
	RENAME_REQ *pSMB = NULL;
	RENAME_RSP *pSMBr = NULL;
	int bytes_returned;
	int name_len, name_len2;
	__u16 count;

	cFYI(1, ("In CIFSSMBRename"));
renameRetry:
	rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	pSMB->BufferFormat = 0x04;
	pSMB->SearchAttributes =
	    cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
			ATTR_DIRECTORY);

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
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		    cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, 
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				     PATH_MAX, nls_codepage, remap);
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		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 =
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		    cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2],
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				     toName, PATH_MAX, nls_codepage, remap);
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		name_len2 += 1 /* trailing null */  + 1 /* Signature word */ ;
		name_len2 *= 2;	/* convert to bytes */
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(fromName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->OldFileName, fromName, name_len);
		name_len2 = strnlen(toName, PATH_MAX);
		name_len2++;	/* trailing null */
		pSMB->OldFileName[name_len] = 0x04;  /* 2nd buffer format */
		strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
		name_len2++;	/* trailing null */
		name_len2++;	/* signature byte */
	}

	count = 1 /* 1st signature byte */  + name_len + name_len2;
	pSMB->hdr.smb_buf_length += count;
	pSMB->ByteCount = cpu_to_le16(count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
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	cifs_stats_inc(&tcon->num_renames);
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	if (rc) {
		cFYI(1, ("Send error in rename = %d", rc));
	} 

	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto renameRetry;

	return rc;
}

int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon, 
1434 1435
		int netfid, char * target_name, 
		const struct nls_table * nls_codepage, int remap)
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{
	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
	struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
	struct set_file_rename * rename_info;
	char *data_offset;
	char dummy_string[30];
	int rc = 0;
	int bytes_returned = 0;
	int len_of_str;
	__u16 params, param_offset, offset, count, byte_count;

	cFYI(1, ("Rename to File by handle"));
	rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
			(void **) &pSMBr);
	if (rc)
		return rc;

	params = 6;
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
	offset = param_offset + params;

	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
	rename_info = (struct set_file_rename *) data_offset;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
	byte_count = 3 /* pad */  + params;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	/* construct random name ".cifs_tmp<inodenum><mid>" */
	rename_info->overwrite = cpu_to_le32(1);
	rename_info->root_fid  = 0;
	/* unicode only call */
	if(target_name == NULL) {
		sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid);
1480
	        len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
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					dummy_string, 24, nls_codepage, remap);
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	} else {
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		len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
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					target_name, PATH_MAX, nls_codepage, remap);
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	}
	rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
	count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2;
	byte_count += count;
	pSMB->DataCount = cpu_to_le16(count);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->Fid = netfid;
	pSMB->InformationLevel =
		cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
                         (struct smb_hdr *) pSMBr, &bytes_returned, 0);
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	cifs_stats_inc(&pTcon->num_t2renames);
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	if (rc) {
		cFYI(1,("Send error in Rename (by file handle) = %d", rc));
	}
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	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,
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            const struct nls_table *nls_codepage, int remap)
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{
	int rc = 0;
	COPY_REQ *pSMB = NULL;
	COPY_RSP *pSMBr = NULL;
	int bytes_returned;
	int name_len, name_len2;
	__u16 count;

	cFYI(1, ("In CIFSSMBCopy"));
copyRetry:
	rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
			(void **) &pSMBr);
	if (rc)
		return rc;

	pSMB->BufferFormat = 0x04;
	pSMB->Tid2 = target_tid;

	pSMB->Flags = cpu_to_le16(flags & COPY_TREE);

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
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		name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, 
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					    fromName, PATH_MAX, nls_codepage,
					    remap);
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		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;
1545
		name_len2 = cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], 
1546
				toName, PATH_MAX, nls_codepage, remap);
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		name_len2 += 1 /* trailing null */  + 1 /* Signature word */ ;
		name_len2 *= 2; /* convert to bytes */
	} else {                /* BB improve the check for buffer overruns BB */
		name_len = strnlen(fromName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->OldFileName, fromName, name_len);
		name_len2 = strnlen(toName, PATH_MAX);
		name_len2++;    /* trailing null */
		pSMB->OldFileName[name_len] = 0x04;  /* 2nd buffer format */
		strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
		name_len2++;    /* trailing null */
		name_len2++;    /* signature byte */
	}

	count = 1 /* 1st signature byte */  + name_len + name_len2;
	pSMB->hdr.smb_buf_length += count;
	pSMB->ByteCount = cpu_to_le16(count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
		(struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in copy = %d with %d files copied",
			rc, le16_to_cpu(pSMBr->CopyCount)));
	}
	if (pSMB)
		cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto copyRetry;

	return rc;
}

int
CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
		      const char *fromName, const char *toName,
		      const struct nls_table *nls_codepage)
{
	TRANSACTION2_SPI_REQ *pSMB = NULL;
	TRANSACTION2_SPI_RSP *pSMBr = NULL;
	char *data_offset;
	int name_len;
	int name_len_target;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, param_offset, offset, byte_count;

	cFYI(1, ("In Symlink Unix style"));
createSymLinkRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
1603
		    cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX
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				  /* find define for this maxpathcomponent */
				  , nls_codepage);
		name_len++;	/* trailing null */
		name_len *= 2;

	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(fromName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, fromName, name_len);
	}
	params = 6 + name_len;
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;

	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len_target =
1627
		    cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX
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				  /* find define for this maxpathcomponent */
				  , nls_codepage);
		name_len_target++;	/* trailing null */
		name_len_target *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len_target = strnlen(toName, PATH_MAX);
		name_len_target++;	/* trailing null */
		strncpy(data_offset, toName, name_len_target);
	}

	pSMB->MaxParameterCount = cpu_to_le16(2);
	/* BB find exact max on data count below from sess */
	pSMB->MaxDataCount = cpu_to_le16(1000);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	byte_count = 3 /* pad */  + params + name_len_target;
	pSMB->DataCount = cpu_to_le16(name_len_target);
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1657
	cifs_stats_inc(&tcon->num_symlinks);
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	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,
1676
		       const struct nls_table *nls_codepage, int remap)
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{
	TRANSACTION2_SPI_REQ *pSMB = NULL;
	TRANSACTION2_SPI_RSP *pSMBr = NULL;
	char *data_offset;
	int name_len;
	int name_len_target;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, param_offset, offset, byte_count;

	cFYI(1, ("In Create Hard link Unix style"));
createHardLinkRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1695
		name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName,
1696
					    PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;

	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(toName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, toName, name_len);
	}
	params = 6 + name_len;
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;

	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len_target =
1718
		    cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX,
1719
				     nls_codepage, remap);
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		name_len_target++;	/* trailing null */
		name_len_target *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len_target = strnlen(fromName, PATH_MAX);
		name_len_target++;	/* trailing null */
		strncpy(data_offset, fromName, name_len_target);
	}

	pSMB->MaxParameterCount = cpu_to_le16(2);
	/* BB find exact max on data count below from sess*/
	pSMB->MaxDataCount = cpu_to_le16(1000);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	byte_count = 3 /* pad */  + params + name_len_target;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->DataCount = cpu_to_le16(name_len_target);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1747
	cifs_stats_inc(&tcon->num_hardlinks);
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	if (rc) {
		cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
	}

	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto createHardLinkRetry;

	return rc;
}

int
CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
		   const char *fromName, const char *toName,
1762
		   const struct nls_table *nls_codepage, int remap)
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{
	int rc = 0;
	NT_RENAME_REQ *pSMB = NULL;
	RENAME_RSP *pSMBr = NULL;
	int bytes_returned;
	int name_len, name_len2;
	__u16 count;

	cFYI(1, ("In CIFSCreateHardLink"));
winCreateHardLinkRetry:

	rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	pSMB->SearchAttributes =
	    cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
			ATTR_DIRECTORY);
	pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
	pSMB->ClusterCount = 0;

	pSMB->BufferFormat = 0x04;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
1789
		    cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
1790
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
		pSMB->OldFileName[name_len] = 0;	/* pad */
		pSMB->OldFileName[name_len + 1] = 0x04; 
		name_len2 =
1796
		    cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], 
1797
				     toName, PATH_MAX, nls_codepage, remap);
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		name_len2 += 1 /* trailing null */  + 1 /* Signature word */ ;
		name_len2 *= 2;	/* convert to bytes */
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(fromName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->OldFileName, fromName, name_len);
		name_len2 = strnlen(toName, PATH_MAX);
		name_len2++;	/* trailing null */
		pSMB->OldFileName[name_len] = 0x04;	/* 2nd buffer format */
		strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
		name_len2++;	/* trailing null */
		name_len2++;	/* signature byte */
	}

	count = 1 /* string type byte */  + name_len + name_len2;
	pSMB->hdr.smb_buf_length += count;
	pSMB->ByteCount = cpu_to_le16(count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1818
	cifs_stats_inc(&tcon->num_hardlinks);
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	if (rc) {
		cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
	}
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto winCreateHardLinkRetry;

	return rc;
}

int
CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
			const unsigned char *searchName,
			char *symlinkinfo, const int buflen,
			const struct nls_table *nls_codepage)
{
/* SMB_QUERY_FILE_UNIX_LINK */
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	__u16 params, byte_count;

	cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName));

querySymLinkRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
1853
		    cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
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				  /* find define for this maxpathcomponent */
				  , nls_codepage);
		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */  + 4 /* rsrvd */  + name_len /* incl null */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	/* BB find exact max data count below from sess structure BB */
	pSMB->MaxDataCount = cpu_to_le16(4000);
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc));
	} else {
		/* decode response */

		rc = validate_t2((struct smb_t2_rsp *)pSMBr);
		if (rc || (pSMBr->ByteCount < 2))
		/* BB also check enough total bytes returned */
			rc = -EIO;	/* bad smb */
		else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			__u16 count = le16_to_cpu(pSMBr->t2.DataCount);

			if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
				name_len = UniStrnlen((wchar_t *) ((char *)
					&pSMBr->hdr.Protocol +data_offset),
					min_t(const int, buflen,count) / 2);
1908
			/* BB FIXME investigate remapping reserved chars here */
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				cifs_strfromUCS_le(symlinkinfo,
1910
					(__le16 *) ((char *)&pSMBr->hdr.Protocol +
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						data_offset),
					name_len, nls_codepage);
			} else {
				strncpy(symlinkinfo,
					(char *) &pSMBr->hdr.Protocol + 
						data_offset,
					min_t(const int, buflen, count));
			}
			symlinkinfo[buflen] = 0;
	/* just in case so calling code does not go off the end of buffer */
		}
	}
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto querySymLinkRetry;
	return rc;
}

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 */
		__u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
		__u32 data_count = le32_to_cpu(pSMBr->DataCount);
		if ((pSMBr->ByteCount < 2) || (data_offset > 512))
		/* BB also check enough total bytes returned */
			rc = -EIO;	/* bad smb */
		else {
			if(data_count && (data_count < 2048)) {
				char * end_of_smb = pSMBr->ByteCount + (char *)&pSMBr->ByteCount;

				struct reparse_data * reparse_buf = (struct reparse_data *)
					((char *)&pSMBr->hdr.Protocol + data_offset);
				if((char*)reparse_buf >= end_of_smb) {
					rc = -EIO;
					goto qreparse_out;
				}
				if((reparse_buf->LinkNamesBuf + 
					reparse_buf->TargetNameOffset +
					reparse_buf->TargetNameLen) >
						end_of_smb) {
					cFYI(1,("reparse buf extended beyond SMB"));
					rc = -EIO;
					goto qreparse_out;
				}
				
				if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
					name_len = UniStrnlen((wchar_t *)
							(reparse_buf->LinkNamesBuf + 
							reparse_buf->TargetNameOffset),
							min(buflen/2, reparse_buf->TargetNameLen / 2)); 
					cifs_strfromUCS_le(symlinkinfo,
2001
						(__le16 *) (reparse_buf->LinkNamesBuf + 
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						reparse_buf->TargetNameOffset),
						name_len, nls_codepage);
				} else { /* ASCII names */
					strncpy(symlinkinfo,reparse_buf->LinkNamesBuf + 
						reparse_buf->TargetNameOffset, 
						min_t(const int, buflen, reparse_buf->TargetNameLen));
				}
			} else {
				rc = -EIO;
				cFYI(1,("Invalid return data count on get reparse info ioctl"));
			}
			symlinkinfo[buflen] = 0; /* just in case so the caller
					does not go off the end of the buffer */
			cFYI(1,("readlink result - %s ",symlinkinfo));
		}
	}
qreparse_out:
2019
	cifs_buf_release(pSMB);
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	/* Note: On -EAGAIN error only caller can retry on handle based calls
		since file handle passed in no longer valid */

	return rc;
}

#ifdef CONFIG_CIFS_POSIX

/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace)
{
	/* u8 cifs fields do not need le conversion */
2033 2034 2035
	ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm);
	ace->e_tag  = cpu_to_le16(cifs_ace->cifs_e_tag);
	ace->e_id   = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid));
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	/* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */

	return;
}

/* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
2042 2043
static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen,
				const int acl_type,const int size_of_data_area)
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{
	int size =  0;
	int i;
	__u16 count;
	struct cifs_posix_ace * pACE;
	struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src;
	posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt;

	if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
		return -EOPNOTSUPP;

	if(acl_type & ACL_TYPE_ACCESS) {
		count = le16_to_cpu(cifs_acl->access_entry_count);
		pACE = &cifs_acl->ace_array[0];
		size = sizeof(struct cifs_posix_acl);
		size += sizeof(struct cifs_posix_ace) * count;
		/* check if we would go beyond end of SMB */
		if(size_of_data_area < size) {
			cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size));
			return -EINVAL;
		}
	} else if(acl_type & ACL_TYPE_DEFAULT) {
		count = le16_to_cpu(cifs_acl->access_entry_count);
		size = sizeof(struct cifs_posix_acl);
		size += sizeof(struct cifs_posix_ace) * count;
/* skip past access ACEs to get to default ACEs */
		pACE = &cifs_acl->ace_array[count];
		count = le16_to_cpu(cifs_acl->default_entry_count);
		size += sizeof(struct cifs_posix_ace) * count;
		/* check if we would go beyond end of SMB */
		if(size_of_data_area < size)
			return -EINVAL;
	} else {
		/* illegal type */
		return -EINVAL;
	}

	size = posix_acl_xattr_size(count);
	if((buflen == 0) || (local_acl == NULL)) {
		/* used to query ACL EA size */				
	} else if(size > buflen) {
		return -ERANGE;
	} else /* buffer big enough */ {
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		local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
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		for(i = 0;i < count ;i++) {
			cifs_convert_ace(&local_acl->a_entries[i],pACE);
			pACE ++;
		}
	}
	return size;
}

static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace,
			const posix_acl_xattr_entry * local_ace)
{
	__u16 rc = 0; /* 0 = ACL converted ok */

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	cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm);
	cifs_ace->cifs_e_tag =  le16_to_cpu(local_ace->e_tag);
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	/* BB is there a better way to handle the large uid? */
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	if(local_ace->e_id == cpu_to_le32(-1)) {
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	/* Probably no need to le convert -1 on any arch but can not hurt */
		cifs_ace->cifs_uid = cpu_to_le64(-1);
	} else 
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		cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id));
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        /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/
	return rc;
}

/* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen,
		const int acl_type)
{
	__u16 rc = 0;
        struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data;
        posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL;
	int count;
	int i;

	if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
		return 0;

	count = posix_acl_xattr_count((size_t)buflen);
	cFYI(1,("setting acl with %d entries from buf of length %d and version of %d",
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		count, buflen, le32_to_cpu(local_acl->a_version)));
	if(le32_to_cpu(local_acl->a_version) != 2) {
		cFYI(1,("unknown POSIX ACL version %d",
		     le32_to_cpu(local_acl->a_version)));
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		return 0;
	}
	cifs_acl->version = cpu_to_le16(1);
	if(acl_type == ACL_TYPE_ACCESS) 
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		cifs_acl->access_entry_count = cpu_to_le16(count);
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	else if(acl_type == ACL_TYPE_DEFAULT)
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		cifs_acl->default_entry_count = cpu_to_le16(count);
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	else {
		cFYI(1,("unknown ACL type %d",acl_type));
		return 0;
	}
	for(i=0;i<count;i++) {
		rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
					&local_acl->a_entries[i]);
		if(rc != 0) {
			/* ACE not converted */
			break;
		}
	}
	if(rc == 0) {
		rc = (__u16)(count * sizeof(struct cifs_posix_ace));
		rc += sizeof(struct cifs_posix_acl);
		/* BB add check to make sure ACL does not overflow SMB */
	}
	return rc;
}

int
CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
                        const unsigned char *searchName,
                        char *acl_inf, const int buflen, const int acl_type,
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                        const struct nls_table *nls_codepage, int remap)
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{
/* SMB_QUERY_POSIX_ACL */
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	__u16 params, byte_count;
                                                                                                                                             
	cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName));

queryAclRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		(void **) &pSMBr);
	if (rc)
		return rc;
                                                                                                                                             
	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
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			cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, 
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					 PATH_MAX, nls_codepage, remap);
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		name_len++;     /* trailing null */
		name_len *= 2;
		pSMB->FileName[name_len] = 0;
		pSMB->FileName[name_len+1] = 0;
	} else {                /* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */  + 4 /* rsrvd */  + name_len /* incl null */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
        /* BB find exact max data count below from sess structure BB */
	pSMB->MaxDataCount = cpu_to_le16(4000);
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(
		offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
		(struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
	} else {
		/* decode response */
 
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);
		if (rc || (pSMBr->ByteCount < 2))
		/* BB also check enough total bytes returned */
			rc = -EIO;      /* bad smb */
		else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
			rc = cifs_copy_posix_acl(acl_inf,
				(char *)&pSMBr->hdr.Protocol+data_offset,
				buflen,acl_type,count);
		}
	}
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto queryAclRetry;
	return rc;
}

int
CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
                        const unsigned char *fileName,
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                        const char *local_acl, const int buflen, 
			const int acl_type,
                        const struct nls_table *nls_codepage, int remap)
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{
	struct smb_com_transaction2_spi_req *pSMB = NULL;
	struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
	char *parm_data;
	int name_len;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count, data_count, param_offset, offset;

	cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName));
setAclRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
                      (void **) &pSMBr);
	if (rc)
		return rc;
	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
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			cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, 
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				      PATH_MAX, nls_codepage, remap);
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		name_len++;     /* trailing null */
		name_len *= 2;
	} else {                /* BB improve the check for buffer overruns BB */
		name_len = strnlen(fileName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->FileName, fileName, name_len);
	}
	params = 6 + name_len;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;
	parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);

	/* convert to on the wire format for POSIX ACL */
	data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type);

	if(data_count == 0) {
		rc = -EOPNOTSUPP;
		goto setACLerrorExit;
	}
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
	byte_count = 3 /* pad */  + params + data_count;
	pSMB->DataCount = cpu_to_le16(data_count);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
                         (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Set POSIX ACL returned %d", rc));
	}

setACLerrorExit:
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto setAclRetry;
	return rc;
}

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/* BB fix tabs in this function FIXME BB */
int
CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
                const int netfid, __u64 * pExtAttrBits, __u64 *pMask)
{
        int rc = 0;
        struct smb_t2_qfi_req *pSMB = NULL;
        struct smb_t2_qfi_rsp *pSMBr = NULL;
        int bytes_returned;
        __u16 params, byte_count;

        cFYI(1,("In GetExtAttr"));
        if(tcon == NULL)
                return -ENODEV;

GetExtAttrRetry:
        rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
                      (void **) &pSMBr);
        if (rc)
                return rc;

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        params = 2 /* level */ +2 /* fid */;
2346
        pSMB->t2.TotalDataCount = 0;
2347
        pSMB->t2.MaxParameterCount = cpu_to_le16(4);
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        /* BB find exact max data count below from sess structure BB */
        pSMB->t2.MaxDataCount = cpu_to_le16(4000);
        pSMB->t2.MaxSetupCount = 0;
        pSMB->t2.Reserved = 0;
        pSMB->t2.Flags = 0;
        pSMB->t2.Timeout = 0;
        pSMB->t2.Reserved2 = 0;
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        pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
			Fid) - 4);
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        pSMB->t2.DataCount = 0;
        pSMB->t2.DataOffset = 0;
        pSMB->t2.SetupCount = 1;
        pSMB->t2.Reserved3 = 0;
        pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
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        byte_count = params + 1 /* pad */ ;
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        pSMB->t2.TotalParameterCount = cpu_to_le16(params);
        pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
        pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
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        pSMB->Pad = 0;
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	pSMB->Fid = netfid;
        pSMB->hdr.smb_buf_length += byte_count;
        pSMB->t2.ByteCount = cpu_to_le16(byte_count);

        rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
                (struct smb_hdr *) pSMBr, &bytes_returned, 0);
        if (rc) {
                cFYI(1, ("error %d in GetExtAttr", rc));
        } else {
                /* decode response */
                rc = validate_t2((struct smb_t2_rsp *)pSMBr);
                if (rc || (pSMBr->ByteCount < 2))
                /* BB also check enough total bytes returned */
                        /* If rc should we check for EOPNOSUPP and
                        disable the srvino flag? or in caller? */
                        rc = -EIO;      /* bad smb */
                else {
                        __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
                        __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
                        struct file_chattr_info * pfinfo;
                        /* BB Do we need a cast or hash here ? */
                        if(count != 16) {
                                cFYI(1, ("Illegal size ret in GetExtAttr"));
                                rc = -EIO;
                                goto GetExtAttrOut;
                        }
                        pfinfo = (struct file_chattr_info *)
                                (data_offset + (char *) &pSMBr->hdr.Protocol);
                        *pExtAttrBits = le64_to_cpu(pfinfo->mode);
			*pMask = le64_to_cpu(pfinfo->mask);
                }
        }
GetExtAttrOut:
        cifs_buf_release(pSMB);
        if (rc == -EAGAIN)
                goto GetExtAttrRetry;
        return rc;
}


#endif /* CONFIG_POSIX */
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/* Legacy Query Path Information call for lookup to old servers such
   as Win9x/WinME */
int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
                 const unsigned char *searchName,
                 FILE_ALL_INFO * pFinfo,
                 const struct nls_table *nls_codepage, int remap)
{
	QUERY_INFORMATION_REQ * pSMB;
	QUERY_INFORMATION_RSP * pSMBr;
	int rc = 0;
	int bytes_returned;
	int name_len;

	cFYI(1, ("In SMBQPath path %s", searchName)); 
QInfRetry:
	rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
                      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
                    cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
                                     PATH_MAX, nls_codepage, remap);
		name_len++;     /* trailing null */
		name_len *= 2;
	} else {               
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}
	pSMB->BufferFormat = 0x04;
	name_len++; /* account for buffer type byte */	
	pSMB->hdr.smb_buf_length += (__u16) name_len;
	pSMB->ByteCount = cpu_to_le16(name_len);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
                         (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QueryInfo = %d", rc));
	} else if (pFinfo) {            /* decode response */
		memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
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		pFinfo->AllocationSize =
			cpu_to_le64(le32_to_cpu(pSMBr->size));
		pFinfo->EndOfFile = pFinfo->AllocationSize;
		pFinfo->Attributes =
			cpu_to_le32(le16_to_cpu(pSMBr->attr));
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	} else
		rc = -EIO; /* bad buffer passed in */

	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto QInfRetry;

	return rc;
}




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int
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
		 const unsigned char *searchName,
		 FILE_ALL_INFO * pFindData,
2474
		 const struct nls_table *nls_codepage, int remap)
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{
/* level 263 SMB_QUERY_FILE_ALL_INFO */
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	__u16 params, byte_count;

/* cFYI(1, ("In QPathInfo path %s", searchName)); */
QPathInfoRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
2493
		    cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, 
2494
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(4000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QPathInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < 40)) 
			rc = -EIO;	/* bad smb */
		else if (pFindData){
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			memcpy((char *) pFindData,
			       (char *) &pSMBr->hdr.Protocol +
			       data_offset, sizeof (FILE_ALL_INFO));
		} else
		    rc = -ENOMEM;
	}
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto QPathInfoRetry;

	return rc;
}

int
CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
		     const unsigned char *searchName,
		     FILE_UNIX_BASIC_INFO * pFindData,
2555
		     const struct nls_table *nls_codepage, int remap)
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{
/* SMB_QUERY_FILE_UNIX_BASIC */
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned = 0;
	int name_len;
	__u16 params, byte_count;

	cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
UnixQPathInfoRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
2574
		    cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2575
				  PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxDataCount = cpu_to_le16(4000); 
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QPathInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
			rc = -EIO;	/* bad smb */
		} else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			memcpy((char *) pFindData,
			       (char *) &pSMBr->hdr.Protocol +
			       data_offset,
			       sizeof (FILE_UNIX_BASIC_INFO));
		}
	}
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto UnixQPathInfoRetry;

	return rc;
}

#if 0  /* function unused at present */
int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon,
	       const char *searchName, FILE_ALL_INFO * findData,
	       const struct nls_table *nls_codepage)
{
/* level 257 SMB_ */
	TRANSACTION2_FFIRST_REQ *pSMB = NULL;
	TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	__u16 params, byte_count;

	cFYI(1, ("In FindUnique"));
findUniqueRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
2655
		    cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
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				  /* find define for this maxpathcomponent */
				  , nls_codepage);
		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 12 + name_len /* includes null */ ;
	pSMB->TotalDataCount = 0;	/* no EAs */
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(4000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(
         offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;	/* one byte, no need to le convert */
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->SearchAttributes =
	    cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
			ATTR_DIRECTORY);
	pSMB->SearchCount = cpu_to_le16(16);	/* BB increase */
	pSMB->SearchFlags = cpu_to_le16(1);
	pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
	pSMB->SearchStorageType = 0;	/* BB what should we set this to? BB */
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);

	if (rc) {
		cFYI(1, ("Send error in FindFileDirInfo = %d", rc));
	} else {		/* decode response */
2701
		cifs_stats_inc(&tcon->num_ffirst);
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		/* BB fill in */
	}

	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto findUniqueRetry;

	return rc;
}
#endif /* end unused (temporarily) function */

/* xid, tcon, searchName and codepage are input parms, rest are returned */
int
CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
	      const char *searchName, 
	      const struct nls_table *nls_codepage,
	      __u16 *	pnetfid,
2719
	      struct cifs_search_info * psrch_inf, int remap, const char dirsep)
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{
/* level 257 SMB_ */
	TRANSACTION2_FFIRST_REQ *pSMB = NULL;
	TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
	T2_FFIRST_RSP_PARMS * parms;
	int rc = 0;
	int bytes_returned = 0;
	int name_len;
	__u16 params, byte_count;

2730
	cFYI(1, ("In FindFirst for %s",searchName));
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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 =
2740
		    cifsConvertToUCS((__le16 *) pSMB->FileName,searchName,
2741 2742 2743 2744
				 PATH_MAX, nls_codepage, remap);
		/* We can not add the asterik earlier in case
		it got remapped to 0xF03A as if it were part of the
		directory name instead of a wildcard */
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		name_len *= 2;
2746
		pSMB->FileName[name_len] = dirsep;
2747 2748 2749 2750
		pSMB->FileName[name_len+1] = 0;
		pSMB->FileName[name_len+2] = '*';
		pSMB->FileName[name_len+3] = 0;
		name_len += 4; /* now the trailing null */
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		pSMB->FileName[name_len] = 0; /* null terminate just in case */
		pSMB->FileName[name_len+1] = 0;
2753
		name_len += 2;
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	} else {	/* BB add check for overrun of SMB buf BB */
		name_len = strnlen(searchName, PATH_MAX);
/* BB fix here and in unicode clause above ie
		if(name_len > buffersize-header)
			free buffer exit; BB */
		strncpy(pSMB->FileName, searchName, name_len);
2760
		pSMB->FileName[name_len] = dirsep;
2761 2762 2763
		pSMB->FileName[name_len+1] = '*';
		pSMB->FileName[name_len+2] = 0;
		name_len += 3;
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	}

	params = 12 + name_len /* includes null */ ;
	pSMB->TotalDataCount = 0;	/* no EAs */
	pSMB->MaxParameterCount = cpu_to_le16(10);
	pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf -
					  MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(
	  offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;	/* one byte, no need to make endian neutral */
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
	pSMB->SearchAttributes =
	    cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
			ATTR_DIRECTORY);
	pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
	pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | 
		CIFS_SEARCH_RETURN_RESUME);
	pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);

	/* BB what should we set StorageType to? Does it matter? BB */
	pSMB->SearchStorageType = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2801
	cifs_stats_inc(&tcon->num_ffirst);
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2803
	if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */
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		/* BB Add code to handle unsupported level rc */
		cFYI(1, ("Error in FindFirst = %d", rc));
2806 2807 2808

		if (pSMB)
			cifs_buf_release(pSMB);
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		/* BB eventually could optimize out free and realloc of buf */
		/*    for this case */
		if (rc == -EAGAIN)
			goto findFirstRetry;
	} else { /* decode response */
		/* BB remember to free buffer if error BB */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);
		if(rc == 0) {
			if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
				psrch_inf->unicode = TRUE;
			else
				psrch_inf->unicode = FALSE;

			psrch_inf->ntwrk_buf_start = (char *)pSMBr;
			psrch_inf->srch_entries_start = 
				(char *) &pSMBr->hdr.Protocol + 
					le16_to_cpu(pSMBr->t2.DataOffset);
			parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
			       le16_to_cpu(pSMBr->t2.ParameterOffset));

			if(parms->EndofSearch)
				psrch_inf->endOfSearch = TRUE;
			else
				psrch_inf->endOfSearch = FALSE;

			psrch_inf->entries_in_buffer  = le16_to_cpu(parms->SearchCount);
			psrch_inf->index_of_last_entry = 
				psrch_inf->entries_in_buffer;
			*pnetfid = parms->SearchHandle;
		} else {
			cifs_buf_release(pSMB);
		}
	}

	return rc;
}

int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
            __u16 searchHandle, struct cifs_search_info * psrch_inf)
{
	TRANSACTION2_FNEXT_REQ *pSMB = NULL;
	TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
	T2_FNEXT_RSP_PARMS * parms;
	char *response_data;
	int rc = 0;
	int bytes_returned, name_len;
	__u16 params, byte_count;

	cFYI(1, ("In FindNext"));

	if(psrch_inf->endOfSearch == TRUE)
		return -ENOENT;

	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		(void **) &pSMBr);
	if (rc)
		return rc;

	params = 14;    /* includes 2 bytes of null string, converted to LE below */
	byte_count = 0;
	pSMB->TotalDataCount = 0;       /* no EAs */
	pSMB->MaxParameterCount = cpu_to_le16(8);
	pSMB->MaxDataCount =
            cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset =  cpu_to_le16(
	      offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
	pSMB->SearchHandle = searchHandle;      /* always kept as le */
	pSMB->SearchCount =
		cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO));
	/* test for Unix extensions */
/*	if (tcon->ses->capabilities & CAP_UNIX) {
		pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX);
		psrch_inf->info_level = SMB_FIND_FILE_UNIX;
	} else {
		pSMB->InformationLevel =
		   cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
		psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
	} */
	pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
	pSMB->ResumeKey = psrch_inf->resume_key;
	pSMB->SearchFlags =
	      cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);

	name_len = psrch_inf->resume_name_len;
	params += name_len;
	if(name_len < PATH_MAX) {
		memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
		byte_count += name_len;
2908 2909 2910
		/* 14 byte parm len above enough for 2 byte null terminator */
		pSMB->ResumeFileName[name_len] = 0;
		pSMB->ResumeFileName[name_len+1] = 0;
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	} else {
		rc = -EINVAL;
		goto FNext2_err_exit;
	}
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
                                                                                              
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			(struct smb_hdr *) pSMBr, &bytes_returned, 0);
2923
	cifs_stats_inc(&tcon->num_fnext);
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	if (rc) {
		if (rc == -EBADF) {
			psrch_inf->endOfSearch = TRUE;
			rc = 0; /* search probably was closed at end of search above */
		} else
			cFYI(1, ("FindNext returned = %d", rc));
	} else {                /* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);
		
		if(rc == 0) {
			/* BB fixme add lock for file (srch_info) struct here */
			if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
				psrch_inf->unicode = TRUE;
			else
				psrch_inf->unicode = FALSE;
			response_data = (char *) &pSMBr->hdr.Protocol +
			       le16_to_cpu(pSMBr->t2.ParameterOffset);
			parms = (T2_FNEXT_RSP_PARMS *)response_data;
			response_data = (char *)&pSMBr->hdr.Protocol +
				le16_to_cpu(pSMBr->t2.DataOffset);
			cifs_buf_release(psrch_inf->ntwrk_buf_start);
			psrch_inf->srch_entries_start = response_data;
			psrch_inf->ntwrk_buf_start = (char *)pSMB;
			if(parms->EndofSearch)
				psrch_inf->endOfSearch = TRUE;
			else
				psrch_inf->endOfSearch = FALSE;
                                                                                              
			psrch_inf->entries_in_buffer  = le16_to_cpu(parms->SearchCount);
			psrch_inf->index_of_last_entry +=
				psrch_inf->entries_in_buffer;
/*  cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */

			/* BB fixme add unlock here */
		}

	}

	/* BB On error, should we leave previous search buf (and count and
	last entry fields) intact or free the previous one? */

	/* Note: On -EAGAIN error only caller can retry on handle based calls
	since file handle passed in no longer valid */
FNext2_err_exit:
	if (rc != 0)
		cifs_buf_release(pSMB);
                                                                                              
	return rc;
}

int
CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle)
{
	int rc = 0;
	FINDCLOSE_REQ *pSMB = NULL;
	CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */
	int bytes_returned;

	cFYI(1, ("In CIFSSMBFindClose"));
	rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);

	/* no sense returning error if session restarted
		as file handle has been closed */
	if(rc == -EAGAIN)
		return 0;
	if (rc)
		return rc;

	pSMBr = (CLOSE_RSP *)pSMB;  /* BB removeme BB */
	pSMB->FileID = searchHandle;
	pSMB->ByteCount = 0;
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cERROR(1, ("Send error in FindClose = %d", rc));
	}
3000
	cifs_stats_inc(&tcon->num_fclose);
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	cifs_small_buf_release(pSMB);

	/* Since session is dead, search handle closed on server already */
	if (rc == -EAGAIN)
		rc = 0;

	return rc;
}

int
CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
                const unsigned char *searchName,
                __u64 * inode_number,
3014
                const struct nls_table *nls_codepage, int remap)
L
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{
	int rc = 0;
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int name_len, bytes_returned;
	__u16 params, byte_count;

	cFYI(1,("In GetSrvInodeNum for %s",searchName));
	if(tcon == NULL)
		return -ENODEV; 

GetInodeNumberRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
                      (void **) &pSMBr);
	if (rc)
		return rc;


	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
3035
			cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
3036
				PATH_MAX,nls_codepage, remap);
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		name_len++;     /* trailing null */
		name_len *= 2;
	} else {                /* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */  + 4 /* rsrvd */  + name_len /* incl null */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	/* BB find exact max data count below from sess structure BB */
	pSMB->MaxDataCount = cpu_to_le16(4000);
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
		struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
		(struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("error %d in QueryInternalInfo", rc));
	} else {
		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);
		if (rc || (pSMBr->ByteCount < 2))
		/* BB also check enough total bytes returned */
			/* If rc should we check for EOPNOSUPP and
			disable the srvino flag? or in caller? */
			rc = -EIO;      /* bad smb */
                else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
			struct file_internal_info * pfinfo;
			/* BB Do we need a cast or hash here ? */
			if(count < 8) {
				cFYI(1, ("Illegal size ret in QryIntrnlInf"));
				rc = -EIO;
				goto GetInodeNumOut;
			}
			pfinfo = (struct file_internal_info *)
				(data_offset + (char *) &pSMBr->hdr.Protocol);
			*inode_number = pfinfo->UniqueId;
		}
	}
GetInodeNumOut:
	cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto GetInodeNumberRetry;
	return rc;
}

int
CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
		const unsigned char *searchName,
		unsigned char **targetUNCs,
		unsigned int *number_of_UNC_in_array,
3109
		const struct nls_table *nls_codepage, int remap)
L
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{
/* TRANS2_GET_DFS_REFERRAL */
	TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
	TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
	struct dfs_referral_level_3 * referrals = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	unsigned int i;
	char * temp;
	__u16 params, byte_count;
	*number_of_UNC_in_array = 0;
	*targetUNCs = NULL;

	cFYI(1, ("In GetDFSRefer the path %s", searchName));
	if (ses == NULL)
		return -ENODEV;
getDFSRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;
3132 3133 3134 3135
	
	/* server pointer checked in called function, 
	but should never be null here anyway */
	pSMB->hdr.Mid = GetNextMid(ses->server);
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	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 =
3148
		    cifsConvertToUCS((__le16 *) pSMB->RequestFileName,
3149
				     searchName, PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->RequestFileName, searchName, name_len);
	}

	params = 2 /* level */  + name_len /*includes null */ ;
	pSMB->TotalDataCount = 0;
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->MaxParameterCount = 0;
	pSMB->MaxDataCount = cpu_to_le16(4000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
	byte_count = params + 3 /* pad */ ;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->MaxReferralLevel = cpu_to_le16(3);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in GetDFSRefer = %d", rc));
	} else {		/* decode response */
/* BB Add logic to parse referrals here */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < 17))      /* BB also check enough total bytes returned */
			rc = -EIO;      /* bad smb */
		else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); 
			__u16 data_count = le16_to_cpu(pSMBr->t2.DataCount);

			cFYI(1,
			     ("Decoding GetDFSRefer response.  BCC: %d  Offset %d",
			      pSMBr->ByteCount, data_offset));
			referrals = 
			    (struct dfs_referral_level_3 *) 
					(8 /* sizeof start of data block */ +
					data_offset +
					(char *) &pSMBr->hdr.Protocol); 
			cFYI(1,("num_referrals: %d dfs flags: 0x%x ... \nfor referral one refer size: 0x%x srv type: 0x%x refer flags: 0x%x ttl: 0x%x",
				le16_to_cpu(pSMBr->NumberOfReferrals),le16_to_cpu(pSMBr->DFSFlags), le16_to_cpu(referrals->ReferralSize),le16_to_cpu(referrals->ServerType),le16_to_cpu(referrals->ReferralFlags),le16_to_cpu(referrals->TimeToLive)));
			/* BB This field is actually two bytes in from start of
			   data block so we could do safety check that DataBlock
			   begins at address of pSMBr->NumberOfReferrals */
			*number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals);

			/* BB Fix below so can return more than one referral */
			if(*number_of_UNC_in_array > 1)
				*number_of_UNC_in_array = 1;

			/* get the length of the strings describing refs */
			name_len = 0;
			for(i=0;i<*number_of_UNC_in_array;i++) {
				/* make sure that DfsPathOffset not past end */
				__u16 offset = le16_to_cpu(referrals->DfsPathOffset);
				if (offset > data_count) {
					/* if invalid referral, stop here and do 
					not try to copy any more */
					*number_of_UNC_in_array = i;
					break;
				} 
				temp = ((char *)referrals) + offset;

				if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
					name_len += UniStrnlen((wchar_t *)temp,data_count);
				} else {
					name_len += strnlen(temp,data_count);
				}
				referrals++;
				/* BB add check that referral pointer does not fall off end PDU */
				
			}
			/* BB add check for name_len bigger than bcc */
			*targetUNCs = 
				kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL);
			if(*targetUNCs == NULL) {
				rc = -ENOMEM;
				goto GetDFSRefExit;
			}
			/* copy the ref strings */
			referrals =  
			    (struct dfs_referral_level_3 *) 
					(8 /* sizeof data hdr */ +
					data_offset + 
					(char *) &pSMBr->hdr.Protocol);

			for(i=0;i<*number_of_UNC_in_array;i++) {
				temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset);
				if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
					cifs_strfromUCS_le(*targetUNCs,
3254
						(__le16 *) temp, name_len, nls_codepage);
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				} else {
					strncpy(*targetUNCs,temp,name_len);
				}
				/*  BB update target_uncs pointers */
				referrals++;
			}
			temp = *targetUNCs;
			temp[name_len] = 0;
		}

	}
GetDFSRefExit:
	if (pSMB)
		cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto getDFSRetry;

	return rc;
}

3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361
/* Query File System Info such as free space to old servers such as Win 9x */
int
SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
{
/* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */
	TRANSACTION2_QFSI_REQ *pSMB = NULL;
	TRANSACTION2_QFSI_RSP *pSMBr = NULL;
	FILE_SYSTEM_ALLOC_INFO *response_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count;

	cFYI(1, ("OldQFSInfo"));
oldQFSInfoRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		(void **) &pSMBr);
	if (rc)
		return rc;
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 2;     /* level */
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
	struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
		(struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QFSInfo = %d", rc));
	} else {                /* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < 18))
			rc = -EIO;      /* bad smb */
		else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			cFYI(1,("qfsinf resp BCC: %d  Offset %d",
				 pSMBr->ByteCount, data_offset));

			response_data =
				(FILE_SYSTEM_ALLOC_INFO *) 
				(((char *) &pSMBr->hdr.Protocol) + data_offset);
			FSData->f_bsize =
				le16_to_cpu(response_data->BytesPerSector) *
				le32_to_cpu(response_data->
					SectorsPerAllocationUnit);
			FSData->f_blocks =
				le32_to_cpu(response_data->TotalAllocationUnits);
			FSData->f_bfree = FSData->f_bavail =
				le32_to_cpu(response_data->FreeAllocationUnits);
			cFYI(1,
			     ("Blocks: %lld  Free: %lld Block size %ld",
			      (unsigned long long)FSData->f_blocks,
			      (unsigned long long)FSData->f_bfree,
			      FSData->f_bsize));
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto oldQFSInfoRetry;

	return rc;
}

L
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3362
int
3363
CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
L
Linus Torvalds 已提交
3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382
{
/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
	TRANSACTION2_QFSI_REQ *pSMB = NULL;
	TRANSACTION2_QFSI_RSP *pSMBr = NULL;
	FILE_SYSTEM_INFO *response_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count;

	cFYI(1, ("In QFSInfo"));
QFSInfoRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 2;	/* level */
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
3383
	pSMB->MaxDataCount = cpu_to_le16(1000);
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	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
3406
		cFYI(1, ("Send error in QFSInfo = %d", rc));
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3407 3408 3409
	} else {		/* decode response */
                rc = validate_t2((struct smb_t2_rsp *)pSMBr);

3410
		if (rc || (pSMBr->ByteCount < 24))
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			rc = -EIO;	/* bad smb */
		else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);

			response_data =
			    (FILE_SYSTEM_INFO
			     *) (((char *) &pSMBr->hdr.Protocol) +
				 data_offset);
			FSData->f_bsize =
			    le32_to_cpu(response_data->BytesPerSector) *
			    le32_to_cpu(response_data->
					SectorsPerAllocationUnit);
			FSData->f_blocks =
			    le64_to_cpu(response_data->TotalAllocationUnits);
			FSData->f_bfree = FSData->f_bavail =
			    le64_to_cpu(response_data->FreeAllocationUnits);
			cFYI(1,
			     ("Blocks: %lld  Free: %lld Block size %ld",
			      (unsigned long long)FSData->f_blocks,
			      (unsigned long long)FSData->f_bfree,
			      FSData->f_bsize));
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto QFSInfoRetry;

	return rc;
}

int
3443
CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon)
L
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3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510
{
/* level 0x105  SMB_QUERY_FILE_SYSTEM_INFO */
	TRANSACTION2_QFSI_REQ *pSMB = NULL;
	TRANSACTION2_QFSI_RSP *pSMBr = NULL;
	FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count;

	cFYI(1, ("In QFSAttributeInfo"));
QFSAttributeRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 2;	/* level */
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cERROR(1, ("Send error in QFSAttributeInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < 13)) {	/* BB also check enough bytes returned */
			rc = -EIO;	/* bad smb */
		} else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			response_data =
			    (FILE_SYSTEM_ATTRIBUTE_INFO
			     *) (((char *) &pSMBr->hdr.Protocol) +
				 data_offset);
			memcpy(&tcon->fsAttrInfo, response_data,
			       sizeof (FILE_SYSTEM_ATTRIBUTE_INFO));
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto QFSAttributeRetry;

	return rc;
}

int
3511
CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon)
L
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3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563
{
/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
	TRANSACTION2_QFSI_REQ *pSMB = NULL;
	TRANSACTION2_QFSI_RSP *pSMBr = NULL;
	FILE_SYSTEM_DEVICE_INFO *response_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count;

	cFYI(1, ("In QFSDeviceInfo"));
QFSDeviceRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 2;	/* level */
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);

	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QFSDeviceInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO)))
			rc = -EIO;	/* bad smb */
		else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			response_data =
3564 3565
			    (FILE_SYSTEM_DEVICE_INFO *)
				(((char *) &pSMBr->hdr.Protocol) +
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				 data_offset);
			memcpy(&tcon->fsDevInfo, response_data,
			       sizeof (FILE_SYSTEM_DEVICE_INFO));
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto QFSDeviceRetry;

	return rc;
}

int
3580
CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon)
L
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{
/* level 0x200  SMB_QUERY_CIFS_UNIX_INFO */
	TRANSACTION2_QFSI_REQ *pSMB = NULL;
	TRANSACTION2_QFSI_RSP *pSMBr = NULL;
	FILE_SYSTEM_UNIX_INFO *response_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count;

	cFYI(1, ("In QFSUnixInfo"));
QFSUnixRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 2;	/* level */
	pSMB->TotalDataCount = 0;
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(100);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(struct 
        smb_com_transaction2_qfsi_req, InformationLevel) - 4);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cERROR(1, ("Send error in QFSUnixInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < 13)) {
			rc = -EIO;	/* bad smb */
		} else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			response_data =
			    (FILE_SYSTEM_UNIX_INFO
			     *) (((char *) &pSMBr->hdr.Protocol) +
				 data_offset);
			memcpy(&tcon->fsUnixInfo, response_data,
			       sizeof (FILE_SYSTEM_UNIX_INFO));
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto QFSUnixRetry;


	return rc;
}

3648
int
3649
CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap)
3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718
{
/* level 0x200  SMB_SET_CIFS_UNIX_INFO */
	TRANSACTION2_SETFSI_REQ *pSMB = NULL;
	TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, param_offset, offset, byte_count;

	cFYI(1, ("In SETFSUnixInfo"));
SETFSUnixRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 4;	/* 2 bytes zero followed by info level. */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4;
	offset = param_offset + params;

	pSMB->MaxParameterCount = cpu_to_le16(4);
	pSMB->MaxDataCount = cpu_to_le16(100);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
	byte_count = 1 /* pad */ + params + 12;

	pSMB->DataCount = cpu_to_le16(12);
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);

	/* Params. */
	pSMB->FileNum = 0;
	pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);

	/* Data. */
	pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
	pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
	pSMB->ClientUnixCap = cpu_to_le64(cap);

	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cERROR(1, ("Send error in SETFSUnixInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);
		if (rc) {
			rc = -EIO;	/* bad smb */
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto SETFSUnixRetry;

	return rc;
}


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int
CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
3722
		   struct kstatfs *FSData)
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{
/* level 0x201  SMB_QUERY_CIFS_POSIX_INFO */
	TRANSACTION2_QFSI_REQ *pSMB = NULL;
	TRANSACTION2_QFSI_RSP *pSMBr = NULL;
	FILE_SYSTEM_POSIX_INFO *response_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count;

	cFYI(1, ("In QFSPosixInfo"));
QFSPosixRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	params = 2;	/* level */
	pSMB->TotalDataCount = 0;
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(100);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	byte_count = params + 1 /* pad */ ;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(struct 
        smb_com_transaction2_qfsi_req, InformationLevel) - 4);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
	pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QFSUnixInfo = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc || (pSMBr->ByteCount < 13)) {
			rc = -EIO;	/* bad smb */
		} else {
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			response_data =
			    (FILE_SYSTEM_POSIX_INFO
			     *) (((char *) &pSMBr->hdr.Protocol) +
				 data_offset);
			FSData->f_bsize =
					le32_to_cpu(response_data->BlockSize);
			FSData->f_blocks =
					le64_to_cpu(response_data->TotalBlocks);
			FSData->f_bfree =
			    le64_to_cpu(response_data->BlocksAvail);
3783
			if(response_data->UserBlocksAvail == cpu_to_le64(-1)) {
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				FSData->f_bavail = FSData->f_bfree;
			} else {
				FSData->f_bavail =
					le64_to_cpu(response_data->UserBlocksAvail);
			}
3789
			if(response_data->TotalFileNodes != cpu_to_le64(-1))
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				FSData->f_files =
					le64_to_cpu(response_data->TotalFileNodes);
3792
			if(response_data->FreeFileNodes != cpu_to_le64(-1))
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				FSData->f_ffree =
					le64_to_cpu(response_data->FreeFileNodes);
		}
	}
	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto QFSPosixRetry;

	return rc;
}


/* We can not use write of zero bytes trick to 
   set file size due to need for large file support.  Also note that 
   this SetPathInfo is preferred to SetFileInfo based method in next 
   routine which is only needed to work around a sharing violation bug
   in Samba which this routine can run into */

int
CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
3814 3815
	      __u64 size, int SetAllocation, 
	      const struct nls_table *nls_codepage, int remap)
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{
	struct smb_com_transaction2_spi_req *pSMB = NULL;
	struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
	struct file_end_of_file_info *parm_data;
	int name_len;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, byte_count, data_count, param_offset, offset;

	cFYI(1, ("In SetEOF"));
SetEOFRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
3834
		    cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
3835
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
3838
	} else {	/* BB improve the check for buffer overruns BB */
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		name_len = strnlen(fileName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, fileName, name_len);
	}
	params = 6 + name_len;
	data_count = sizeof (struct file_end_of_file_info);
	pSMB->MaxParameterCount = cpu_to_le16(2);
3846
	pSMB->MaxDataCount = cpu_to_le16(4100);
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	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;
	if(SetAllocation) {
        	if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
	            pSMB->InformationLevel =
                	cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
        	else
	            pSMB->InformationLevel =
        	        cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
	} else /* Set File Size */  {    
	    if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
		    pSMB->InformationLevel =
		        cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
	    else
		    pSMB->InformationLevel =
		        cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
	}

	parm_data =
	    (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
				       offset);
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	byte_count = 3 /* pad */  + params + data_count;
	pSMB->DataCount = cpu_to_le16(data_count);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	parm_data->FileSize = cpu_to_le64(size);
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("SetPathInfo (file size) returned %d", rc));
	}

	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto SetEOFRetry;

	return rc;
}

int
CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, 
                   __u16 fid, __u32 pid_of_opener, int SetAllocation)
{
	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
	struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
	char *data_offset;
	struct file_end_of_file_info *parm_data;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, param_offset, offset, byte_count, count;

	cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
			(long long)size));
3916 3917
	rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);

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	if (rc)
		return rc;

3921 3922
	pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;

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	pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
	pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
    
	params = 6;
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
	offset = param_offset + params;

	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;	

	count = sizeof(struct file_end_of_file_info);
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find max SMB PDU from sess */
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
	byte_count = 3 /* pad */  + params + count;
	pSMB->DataCount = cpu_to_le16(count);
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	parm_data =
		(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
			offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	parm_data->FileSize = cpu_to_le64(size);
	pSMB->Fid = fid;
	if(SetAllocation) {
		if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
			pSMB->InformationLevel =
				cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
		else
			pSMB->InformationLevel =
				cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
	} else /* Set File Size */  {    
	    if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
		    pSMB->InformationLevel =
		        cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
	    else
		    pSMB->InformationLevel =
		        cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
	}
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1,
		     ("Send error in SetFileInfo (SetFileSize) = %d",
		      rc));
	}

	if (pSMB)
3982
		cifs_small_buf_release(pSMB);
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3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007

	/* Note: On -EAGAIN error only caller can retry on handle based calls 
		since file handle passed in no longer valid */

	return rc;
}

/* Some legacy servers such as NT4 require that the file times be set on 
   an open handle, rather than by pathname - this is awkward due to
   potential access conflicts on the open, but it is unavoidable for these
   old servers since the only other choice is to go from 100 nanosecond DCE
   time and resort to the original setpathinfo level which takes the ancient
   DOS time format with 2 second granularity */
int
CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data, 
                   __u16 fid)
{
	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
	struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
	char *data_offset;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, param_offset, offset, byte_count, count;

	cFYI(1, ("Set Times (via SetFileInfo)"));
4008 4009
	rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);

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	if (rc)
		return rc;

4013 4014
	pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;

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	/* At this point there is no need to override the current pid
	with the pid of the opener, but that could change if we someday
	use an existing handle (rather than opening one on the fly) */
	/* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
	pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/
    
	params = 6;
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
	offset = param_offset + params;

	data_offset = (char *) (&pSMB->hdr.Protocol) + offset; 

	count = sizeof (FILE_BASIC_INFO);
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find max SMB PDU from sess */
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
	byte_count = 3 /* pad */  + params + count;
	pSMB->DataCount = cpu_to_le16(count);
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->Fid = fid;
	if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
		pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
	else
		pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	memcpy(data_offset,data,sizeof(FILE_BASIC_INFO));
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc));
	}

4060
	cifs_small_buf_release(pSMB);
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	/* Note: On -EAGAIN error only caller can retry on handle based calls 
		since file handle passed in no longer valid */

	return rc;
}


int
CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName,
		const FILE_BASIC_INFO * data, 
4072
		const struct nls_table *nls_codepage, int remap)
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{
	TRANSACTION2_SPI_REQ *pSMB = NULL;
	TRANSACTION2_SPI_RSP *pSMBr = NULL;
	int name_len;
	int rc = 0;
	int bytes_returned = 0;
	char *data_offset;
	__u16 params, param_offset, offset, byte_count, count;

	cFYI(1, ("In SetTimes"));

SetTimesRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
4092
		    cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
4093
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(fileName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, fileName, name_len);
	}

	params = 6 + name_len;
	count = sizeof (FILE_BASIC_INFO);
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;
	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	byte_count = 3 /* pad */  + params + count;

	pSMB->DataCount = cpu_to_le16(count);
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
		pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
	else
		pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	memcpy(data_offset, data, sizeof (FILE_BASIC_INFO));
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("SetPathInfo (times) returned %d", rc));
	}

	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto SetTimesRetry;

	return rc;
}

/* Can not be used to set time stamps yet (due to old DOS time format) */
/* Can be used to set attributes */
#if 0  /* Possibly not needed - since it turns out that strangely NT4 has a bug
	  handling it anyway and NT4 was what we thought it would be needed for
	  Do not delete it until we prove whether needed for Win9x though */
int
CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
		__u16 dos_attrs, const struct nls_table *nls_codepage)
{
	SETATTR_REQ *pSMB = NULL;
	SETATTR_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;

	cFYI(1, ("In SetAttrLegacy"));

SetAttrLgcyRetry:
	rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
4173
			ConvertToUCS((__le16 *) pSMB->fileName, fileName, 
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				PATH_MAX, nls_codepage);
		name_len++;     /* trailing null */
		name_len *= 2;
	} else {                /* BB improve the check for buffer overruns BB */
		name_len = strnlen(fileName, PATH_MAX);
		name_len++;     /* trailing null */
		strncpy(pSMB->fileName, fileName, name_len);
	}
	pSMB->attr = cpu_to_le16(dos_attrs);
	pSMB->BufferFormat = 0x04;
	pSMB->hdr.smb_buf_length += name_len + 1;
	pSMB->ByteCount = cpu_to_le16(name_len + 1);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Error in LegacySetAttr = %d", rc));
	}

	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto SetAttrLgcyRetry;

	return rc;
}
#endif /* temporarily unneeded SetAttr legacy function */

int
CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
4203 4204 4205
		    char *fileName, __u64 mode, __u64 uid, __u64 gid, 
		    dev_t device, const struct nls_table *nls_codepage, 
		    int remap)
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{
	TRANSACTION2_SPI_REQ *pSMB = NULL;
	TRANSACTION2_SPI_RSP *pSMBr = NULL;
	int name_len;
	int rc = 0;
	int bytes_returned = 0;
	FILE_UNIX_BASIC_INFO *data_offset;
	__u16 params, param_offset, offset, count, byte_count;

	cFYI(1, ("In SetUID/GID/Mode"));
setPermsRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
4224
		    cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, 
4225
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
4228
	} else {	/* BB improve the check for buffer overruns BB */
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		name_len = strnlen(fileName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, fileName, name_len);
	}

	params = 6 + name_len;
	count = sizeof (FILE_UNIX_BASIC_INFO);
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;
	data_offset =
	    (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
				      offset);
	memset(data_offset, 0, count);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	byte_count = 3 /* pad */  + params + count;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->DataCount = cpu_to_le16(count);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	data_offset->Uid = cpu_to_le64(uid);
	data_offset->Gid = cpu_to_le64(gid);
	/* better to leave device as zero when it is  */
	data_offset->DevMajor = cpu_to_le64(MAJOR(device));
	data_offset->DevMinor = cpu_to_le64(MINOR(device));
	data_offset->Permissions = cpu_to_le64(mode);
    
	if(S_ISREG(mode))
		data_offset->Type = cpu_to_le32(UNIX_FILE);
	else if(S_ISDIR(mode))
		data_offset->Type = cpu_to_le32(UNIX_DIR);
	else if(S_ISLNK(mode))
		data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
	else if(S_ISCHR(mode))
		data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
	else if(S_ISBLK(mode))
		data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
	else if(S_ISFIFO(mode))
		data_offset->Type = cpu_to_le32(UNIX_FIFO);
	else if(S_ISSOCK(mode))
		data_offset->Type = cpu_to_le32(UNIX_SOCKET);


	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("SetPathInfo (perms) returned %d", rc));
	}

	if (pSMB)
		cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto setPermsRetry;
	return rc;
}

int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, 
4301 4302 4303
		  const int notify_subdirs, const __u16 netfid,
		  __u32 filter, struct file * pfile, int multishot, 
		  const struct nls_table *nls_codepage)
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{
	int rc = 0;
	struct smb_com_transaction_change_notify_req * pSMB = NULL;
	struct smb_com_transaction_change_notify_rsp * pSMBr = NULL;
4308
	struct dir_notify_req *dnotify_req;
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	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;

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			(struct smb_hdr *) pSMBr, &bytes_returned, -1);
	if (rc) {
		cFYI(1, ("Error in Notify = %d", rc));
4341 4342
	} else {
		/* Add file to outstanding requests */
4343
		/* BB change to kmem cache alloc */	
4344
		dnotify_req = (struct dir_notify_req *) kmalloc(
4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362
						sizeof(struct dir_notify_req),
						 GFP_KERNEL);
		if(dnotify_req) {
			dnotify_req->Pid = pSMB->hdr.Pid;
			dnotify_req->PidHigh = pSMB->hdr.PidHigh;
			dnotify_req->Mid = pSMB->hdr.Mid;
			dnotify_req->Tid = pSMB->hdr.Tid;
			dnotify_req->Uid = pSMB->hdr.Uid;
			dnotify_req->netfid = netfid;
			dnotify_req->pfile = pfile;
			dnotify_req->filter = filter;
			dnotify_req->multishot = multishot;
			spin_lock(&GlobalMid_Lock);
			list_add_tail(&dnotify_req->lhead, 
					&GlobalDnotifyReqList);
			spin_unlock(&GlobalMid_Lock);
		} else 
			rc = -ENOMEM;
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	}
	cifs_buf_release(pSMB);
	return rc;	
}
#ifdef CONFIG_CIFS_XATTR
ssize_t
CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
		 const unsigned char *searchName,
		 char * EAData, size_t buf_size,
4372
		 const struct nls_table *nls_codepage, int remap)
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{
		/* BB assumes one setup word */
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	struct fea * temp_fea;
	char * temp_ptr;
	__u16 params, byte_count;

	cFYI(1, ("In Query All EAs path %s", searchName));
QAllEAsRetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
4393
		    cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, 
4394
				     PATH_MAX, nls_codepage, remap);
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {	/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(4000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in QueryAllEAs = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		/* BB also check enough total bytes returned */
		/* BB we need to improve the validity checking
		of these trans2 responses */
		if (rc || (pSMBr->ByteCount < 4)) 
			rc = -EIO;	/* bad smb */
	   /* else if (pFindData){
			memcpy((char *) pFindData,
			       (char *) &pSMBr->hdr.Protocol +
			       data_offset, kl);
		}*/ else {
			/* check that length of list is not more than bcc */
			/* check that each entry does not go beyond length
			   of list */
			/* check that each element of each entry does not
			   go beyond end of list */
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			struct fealist * ea_response_data;
			rc = 0;
			/* validate_trans2_offsets() */
			/* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
			ea_response_data = (struct fealist *)
				(((char *) &pSMBr->hdr.Protocol) +
				data_offset);
			name_len = le32_to_cpu(ea_response_data->list_len);
			cFYI(1,("ea length %d", name_len));
			if(name_len <= 8) {
			/* returned EA size zeroed at top of function */
				cFYI(1,("empty EA list returned from server"));
			} else {
				/* account for ea list len */
				name_len -= 4;
				temp_fea = ea_response_data->list;
				temp_ptr = (char *)temp_fea;
				while(name_len > 0) {
					__u16 value_len;
					name_len -= 4;
					temp_ptr += 4;
					rc += temp_fea->name_len;
				/* account for prefix user. and trailing null */
					rc = rc + 5 + 1; 
					if(rc<(int)buf_size) {
						memcpy(EAData,"user.",5);
						EAData+=5;
						memcpy(EAData,temp_ptr,temp_fea->name_len);
						EAData+=temp_fea->name_len;
						/* null terminate name */
						*EAData = 0;
						EAData = EAData + 1;
					} else if(buf_size == 0) {
						/* skip copy - calc size only */
					} else {
						/* stop before overrun buffer */
						rc = -ERANGE;
						break;
					}
					name_len -= temp_fea->name_len;
					temp_ptr += temp_fea->name_len;
					/* account for trailing null */
					name_len--;
					temp_ptr++;
					value_len = le16_to_cpu(temp_fea->value_len);
					name_len -= value_len;
					temp_ptr += value_len;
					/* BB check that temp_ptr is still within smb BB*/
				/* no trailing null to account for in value len */
					/* go on to next EA */
					temp_fea = (struct fea *)temp_ptr;
				}
			}
		}
	}
	if (pSMB)
		cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto QAllEAsRetry;

	return (ssize_t)rc;
}

ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon,
		const unsigned char * searchName,const unsigned char * ea_name,
		unsigned char * ea_value, size_t buf_size, 
4516
		const struct nls_table *nls_codepage, int remap)
L
Linus Torvalds 已提交
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{
	TRANSACTION2_QPI_REQ *pSMB = NULL;
	TRANSACTION2_QPI_RSP *pSMBr = NULL;
	int rc = 0;
	int bytes_returned;
	int name_len;
	struct fea * temp_fea;
	char * temp_ptr;
	__u16 params, byte_count;

	cFYI(1, ("In Query EA path %s", searchName));
QEARetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
4536
		    cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, 
4537
				     PATH_MAX, nls_codepage, remap);
L
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {	/* BB improve the check for buffer overruns BB */
		name_len = strnlen(searchName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, searchName, name_len);
	}

	params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
	pSMB->TotalDataCount = 0;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(4000);	/* BB find exact max SMB PDU from sess structure BB */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	pSMB->ParameterOffset = cpu_to_le16(offsetof(
        struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
	pSMB->DataCount = 0;
	pSMB->DataOffset = 0;
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
	byte_count = params + 1 /* pad */ ;
	pSMB->TotalParameterCount = cpu_to_le16(params);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);

	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("Send error in Query EA = %d", rc));
	} else {		/* decode response */
		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		/* BB also check enough total bytes returned */
		/* BB we need to improve the validity checking
		of these trans2 responses */
		if (rc || (pSMBr->ByteCount < 4)) 
			rc = -EIO;	/* bad smb */
	   /* else if (pFindData){
			memcpy((char *) pFindData,
			       (char *) &pSMBr->hdr.Protocol +
			       data_offset, kl);
		}*/ else {
			/* check that length of list is not more than bcc */
			/* check that each entry does not go beyond length
			   of list */
			/* check that each element of each entry does not
			   go beyond end of list */
			__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
			struct fealist * ea_response_data;
			rc = -ENODATA;
			/* validate_trans2_offsets() */
			/* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
			ea_response_data = (struct fealist *)
				(((char *) &pSMBr->hdr.Protocol) +
				data_offset);
			name_len = le32_to_cpu(ea_response_data->list_len);
			cFYI(1,("ea length %d", name_len));
			if(name_len <= 8) {
			/* returned EA size zeroed at top of function */
				cFYI(1,("empty EA list returned from server"));
			} else {
				/* account for ea list len */
				name_len -= 4;
				temp_fea = ea_response_data->list;
				temp_ptr = (char *)temp_fea;
				/* loop through checking if we have a matching
				name and then return the associated value */
				while(name_len > 0) {
					__u16 value_len;
					name_len -= 4;
					temp_ptr += 4;
					value_len = le16_to_cpu(temp_fea->value_len);
				/* BB validate that value_len falls within SMB, 
				even though maximum for name_len is 255 */ 
					if(memcmp(temp_fea->name,ea_name,
						  temp_fea->name_len) == 0) {
						/* found a match */
						rc = value_len;
				/* account for prefix user. and trailing null */
						if(rc<=(int)buf_size) {
							memcpy(ea_value,
								temp_fea->name+temp_fea->name_len+1,
								rc);
							/* ea values, unlike ea names,
							are not null terminated */
						} else if(buf_size == 0) {
						/* skip copy - calc size only */
						} else {
							/* stop before overrun buffer */
							rc = -ERANGE;
						}
						break;
					}
					name_len -= temp_fea->name_len;
					temp_ptr += temp_fea->name_len;
					/* account for trailing null */
					name_len--;
					temp_ptr++;
					name_len -= value_len;
					temp_ptr += value_len;
				/* no trailing null to account for in value len */
					/* go on to next EA */
					temp_fea = (struct fea *)temp_ptr;
				}
			} 
		}
	}
	if (pSMB)
		cifs_buf_release(pSMB);
	if (rc == -EAGAIN)
		goto QEARetry;

	return (ssize_t)rc;
}

int
CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
		const char * ea_name, const void * ea_value, 
4663 4664
		const __u16 ea_value_len, const struct nls_table *nls_codepage,
		int remap)
L
Linus Torvalds 已提交
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{
	struct smb_com_transaction2_spi_req *pSMB = NULL;
	struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
	struct fealist *parm_data;
	int name_len;
	int rc = 0;
	int bytes_returned = 0;
	__u16 params, param_offset, byte_count, offset, count;

	cFYI(1, ("In SetEA"));
SetEARetry:
	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
		      (void **) &pSMBr);
	if (rc)
		return rc;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
		name_len =
4683
		    cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, 
4684
				     PATH_MAX, nls_codepage, remap);
L
Linus Torvalds 已提交
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		name_len++;	/* trailing null */
		name_len *= 2;
	} else {		/* BB improve the check for buffer overruns BB */
		name_len = strnlen(fileName, PATH_MAX);
		name_len++;	/* trailing null */
		strncpy(pSMB->FileName, fileName, name_len);
	}

	params = 6 + name_len;

	/* done calculating parms using name_len of file name,
	now use name_len to calculate length of ea name
	we are going to create in the inode xattrs */
	if(ea_name == NULL)
		name_len = 0;
	else
		name_len = strnlen(ea_name,255);

	count = sizeof(*parm_data) + ea_value_len + name_len + 1;
	pSMB->MaxParameterCount = cpu_to_le16(2);
	pSMB->MaxDataCount = cpu_to_le16(1000);	/* BB find max SMB size from sess */
	pSMB->MaxSetupCount = 0;
	pSMB->Reserved = 0;
	pSMB->Flags = 0;
	pSMB->Timeout = 0;
	pSMB->Reserved2 = 0;
	param_offset = offsetof(struct smb_com_transaction2_spi_req,
                                     InformationLevel) - 4;
	offset = param_offset + params;
	pSMB->InformationLevel =
		cpu_to_le16(SMB_SET_FILE_EA);

	parm_data =
		(struct fealist *) (((char *) &pSMB->hdr.Protocol) +
				       offset);
	pSMB->ParameterOffset = cpu_to_le16(param_offset);
	pSMB->DataOffset = cpu_to_le16(offset);
	pSMB->SetupCount = 1;
	pSMB->Reserved3 = 0;
	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
	byte_count = 3 /* pad */  + params + count;
	pSMB->DataCount = cpu_to_le16(count);
	parm_data->list_len = cpu_to_le32(count);
	parm_data->list[0].EA_flags = 0;
	/* we checked above that name len is less than 255 */
	parm_data->list[0].name_len = (__u8)name_len;;
	/* EA names are always ASCII */
	if(ea_name)
		strncpy(parm_data->list[0].name,ea_name,name_len);
	parm_data->list[0].name[name_len] = 0;
	parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
	/* caller ensures that ea_value_len is less than 64K but
	we need to ensure that it fits within the smb */

	/*BB add length check that it would fit in negotiated SMB buffer size BB */
	/* if(ea_value_len > buffer_size - 512 (enough for header)) */
	if(ea_value_len)
		memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len);

	pSMB->TotalDataCount = pSMB->DataCount;
	pSMB->ParameterCount = cpu_to_le16(params);
	pSMB->TotalParameterCount = pSMB->ParameterCount;
	pSMB->Reserved4 = 0;
	pSMB->hdr.smb_buf_length += byte_count;
	pSMB->ByteCount = cpu_to_le16(byte_count);
	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
	if (rc) {
		cFYI(1, ("SetPathInfo (EA) returned %d", rc));
	}

	cifs_buf_release(pSMB);

	if (rc == -EAGAIN)
		goto SetEARetry;

	return rc;
}

#endif