this checkin gets rid of the global Files[] array and makes it local

in files.c

it should now be faily easy to expand the default MAX_OPEN_FILES to
many thousands.
(This used to be commit b088c804f98908eb02f05ab2f2e8a61691a0a582)

7 files changed, 820 insertions, 806 deletions

diff --git a/source3/smbd/files.c b/source3/smbd/files.c
new file mode 100644
index 00000000000..a37d190f01c
--- /dev/null
+++ b/source3/smbd/files.c
@@ -0,0 +1,321 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 1.9.
+   Files[] structure handling
+   Copyright (C) Andrew Tridgell 1998
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program 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 General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+extern int DEBUGLEVEL;
+
+#define MAX_OPEN_FILES 100
+
+#define MAX_FNUMS (MAX_OPEN_FILES+MAX_OPEN_DIRECTORIES)
+#define VALID_FNUM(fnum)   (((fnum) >= 0) && ((fnum) < MAX_FNUMS))
+
+static files_struct Files[MAX_FNUMS];
+
+/*
+ * Indirection for file fd's. Needed as POSIX locking
+ * is based on file/process, not fd/process.
+ */
+static file_fd_struct FileFd[MAX_OPEN_FILES];
+static int max_file_fd_used = 0;
+
+
+/****************************************************************************
+  find first available file slot
+****************************************************************************/
+files_struct *find_free_file(void )
+{
+	int i;
+	static int first_file;
+
+	/* we want to give out file handles differently on each new
+	   connection because of a common bug in MS clients where they try to
+	   reuse a file descriptor from an earlier smb connection. This code
+	   increases the chance that the errant client will get an error rather
+	   than causing corruption */
+	if (first_file == 0) {
+		first_file = (getpid() ^ (int)time(NULL)) % MAX_FNUMS;
+		if (first_file == 0) first_file = 1;
+	}
+
+	if (first_file >= MAX_FNUMS)
+		first_file = 1;
+
+	for (i=first_file;i<MAX_FNUMS;i++)
+		if (!Files[i].open && !Files[i].reserved) {
+			memset(&Files[i], 0, sizeof(Files[i]));
+			first_file = i+1;
+			Files[i].reserved = True;
+			Files[i].fnum = i;
+			return &Files[i];
+		}
+
+	/* returning a file handle of 0 is a bad idea - so we start at 1 */
+	for (i=1;i<first_file;i++)
+		if (!Files[i].open && !Files[i].reserved) {
+			memset(&Files[i], 0, sizeof(Files[i]));
+			first_file = i+1;
+			Files[i].reserved = True;
+			Files[i].fnum = i;
+			return &Files[i];
+		}
+
+        /* 
+         * Before we give up, go through the open files 
+         * and see if there are any files opened with a
+         * batch oplock. If so break the oplock and then
+         * re-use that entry (if it becomes closed).
+         * This may help as NT/95 clients tend to keep
+         * files batch oplocked for quite a long time
+         * after they have finished with them.
+         */
+        for (i=first_file;i<MAX_FNUMS;i++) {
+          if(attempt_close_oplocked_file( &Files[i])) {
+            memset(&Files[i], 0, sizeof(Files[i]));
+            first_file = i+1;
+            Files[i].reserved = True;
+	    Files[i].fnum = i;
+	    return &Files[i];
+          }
+        }
+
+        for (i=1;i<MAX_FNUMS;i++) {
+          if(attempt_close_oplocked_file( &Files[i])) {
+            memset(&Files[i], 0, sizeof(Files[i]));
+            first_file = i+1;
+            Files[i].reserved = True;
+	    Files[i].fnum = i;
+	    return &Files[i];
+          }
+        }
+
+	DEBUG(1,("ERROR! Out of file structures - perhaps increase MAX_OPEN_FILES?\n"));
+	return NULL;
+}
+
+
+
+/****************************************************************************
+fd support routines - attempt to find an already open file by dev
+and inode - increments the ref_count of the returned file_fd_struct *.
+****************************************************************************/
+file_fd_struct *fd_get_already_open(struct stat *sbuf)
+{
+  int i;
+  file_fd_struct *fd_ptr;
+
+  if(sbuf == 0)
+    return 0;
+
+  for(i = 0; i <= max_file_fd_used; i++) {
+    fd_ptr = &FileFd[i];
+    if((fd_ptr->ref_count > 0) &&
+       (((uint32)sbuf->st_dev) == fd_ptr->dev) &&
+       (((uint32)sbuf->st_ino) == fd_ptr->inode)) {
+      fd_ptr->ref_count++;
+      DEBUG(3,
+       ("Re-used file_fd_struct %d, dev = %x, inode = %x, ref_count = %d\n",
+        i, fd_ptr->dev, fd_ptr->inode, fd_ptr->ref_count));
+      return fd_ptr;
+    }
+  }
+  return 0;
+}
+
+/****************************************************************************
+fd support routines - attempt to find a empty slot in the FileFd array.
+Increments the ref_count of the returned entry.
+****************************************************************************/
+file_fd_struct *fd_get_new(void)
+{
+  extern struct current_user current_user;
+  int i;
+  file_fd_struct *fd_ptr;
+
+  for(i = 0; i < MAX_OPEN_FILES; i++) {
+    fd_ptr = &FileFd[i];
+    if(fd_ptr->ref_count == 0) {
+      fd_ptr->dev = (uint32)-1;
+      fd_ptr->inode = (uint32)-1;
+      fd_ptr->fd = -1;
+      fd_ptr->fd_readonly = -1;
+      fd_ptr->fd_writeonly = -1;
+      fd_ptr->real_open_flags = -1;
+      fd_ptr->uid_cache_count = 0;
+      fd_add_to_uid_cache(fd_ptr, (uid_t)current_user.uid);
+      fd_ptr->ref_count++;
+      /* Increment max used counter if neccessary, cuts down
+         on search time when re-using */
+      if(i > max_file_fd_used)
+        max_file_fd_used = i;
+      DEBUG(3,("Allocated new file_fd_struct %d, dev = %x, inode = %x\n",
+               i, fd_ptr->dev, fd_ptr->inode));
+      return fd_ptr;
+    }
+  }
+  DEBUG(1,("ERROR! Out of file_fd structures - perhaps increase MAX_OPEN_FILES?\n"));
+  return 0;
+}
+
+
+/****************************************************************************
+close all open files for a connection
+****************************************************************************/
+void file_close_conn(connection_struct *conn)
+{
+  int i;
+  for (i=0;i<MAX_FNUMS;i++)
+    if (Files[i].conn == conn && Files[i].open) {
+      if(Files[i].is_directory)
+        close_directory(&Files[i]); 
+      else                  
+        close_file(&Files[i],False); 
+    }
+}
+
+/****************************************************************************
+initialise file structures
+****************************************************************************/
+void file_init(void)
+{
+	int i;
+
+#ifdef HAVE_GETRLIMIT
+#ifdef RLIMIT_NOFILE
+	{
+		struct rlimit rlp;
+		getrlimit(RLIMIT_NOFILE, &rlp);
+		/* Set the fd limit to be MAX_OPEN_FILES + 10 to
+		 * account for the extra fd we need to read
+		 * directories, as well as the log files and standard
+		 * handles etc.  */
+		rlp.rlim_cur = (MAX_FNUMS+10>rlp.rlim_max)? 
+			rlp.rlim_max:MAX_FNUMS+10;
+		setrlimit(RLIMIT_NOFILE, &rlp);
+		getrlimit(RLIMIT_NOFILE, &rlp);
+		DEBUG(3,("Maximum number of open files per session is %d\n",
+			 (int)rlp.rlim_cur));
+	}
+#endif
+#endif
+
+  
+
+	for (i=0;i<MAX_FNUMS;i++) {
+		Files[i].open = False;
+		string_init(&Files[i].fsp_name,"");
+	}
+
+	for (i=0;i<MAX_OPEN_FILES;i++) {
+		file_fd_struct *fd_ptr = &FileFd[i];
+		fd_ptr->ref_count = 0;
+		fd_ptr->dev = (int32)-1;
+		fd_ptr->inode = (int32)-1;
+		fd_ptr->fd = -1;
+		fd_ptr->fd_readonly = -1;
+		fd_ptr->fd_writeonly = -1;
+		fd_ptr->real_open_flags = -1;
+	}
+}
+
+/****************************************************************************
+find a fsp given a fnum
+****************************************************************************/
+files_struct *file_fsp(int fnum)
+{
+	if (!VALID_FNUM(fnum)) return NULL;
+	return &Files[fnum];
+}
+
+
+/****************************************************************************
+close files open by a specified vuid
+****************************************************************************/
+void file_close_user(int vuid)
+{
+	int i;
+	for (i=0;i<MAX_FNUMS;i++) {
+		files_struct *fsp = &Files[i];
+		if ((fsp->vuid == vuid) && fsp->open) {
+			if(!fsp->is_directory)
+				close_file(fsp,False);
+			else
+				close_directory(fsp);
+		}
+	}
+}
+
+
+/****************************************************************************
+find a fsp given a device, inode and timevalue
+****************************************************************************/
+files_struct *file_find_dit(int dev, int inode, struct timeval *tval)
+{
+	int i;
+	for (i=0;i<MAX_FNUMS;i++) {
+		files_struct *fsp = &Files[i];
+		if (fsp->open && 
+		    fsp->fd_ptr->dev == dev && 
+		    fsp->fd_ptr->inode == inode &&
+		    fsp->open_time.tv_sec == tval->tv_sec &&
+		    fsp->open_time.tv_usec == tval->tv_usec) {
+			return fsp;
+		}
+	} 
+	return NULL;
+}
+
+/****************************************************************************
+find a fsp that is open for printing
+****************************************************************************/
+files_struct *file_find_print(void)
+{
+	int i;
+
+	for (i=0;i<MAX_FNUMS;i++) {
+		files_struct *fsp = &Files[i];
+		if (fsp->open && fsp->print_file) {
+			return fsp;
+		}
+	} 
+	return NULL;
+}
+
+
+/****************************************************************************
+sync open files on a connection
+****************************************************************************/
+void file_sync_all(connection_struct *conn)
+{
+	int i;
+	for (i=0;i<MAX_FNUMS;i++) {
+		files_struct *fsp = &Files[i];
+		if (fsp->open && conn == fsp->conn) {
+			sync_file(conn,fsp);
+		}
+	}
+}
+
+
+void file_free(files_struct *fsp)
+{
+	memset(fsp, 0, sizeof(*fsp));
+}
diff --git a/source3/smbd/ipc.c b/source3/smbd/ipc.c
index 63495f0479b..ae225956a23 100644
--- a/source3/smbd/ipc.c
+++ b/source3/smbd/ipc.c
@@ -36,7 +36,6 @@
 
 extern int DEBUGLEVEL;
 extern int max_send;
-extern files_struct Files[];
 
 extern fstring local_machine;
 extern fstring global_myworkgroup;
@@ -1913,108 +1912,105 @@ static BOOL api_PrintJobInfo(connection_struct *conn,uint16 vuid,char *param,cha
   			     char **rdata,char **rparam,
   			     int *rdata_len,int *rparam_len)
 {
-  struct pack_desc desc;
-  char *str1 = param+2;
-  char *str2 = skip_string(str1,1);
-  char *p = skip_string(str2,1);
-  int jobid, snum;
-  int uLevel = SVAL(p,2);
-  int function = SVAL(p,4);	/* what is this ?? */
-  int i;
-  char *s = data;
+	struct pack_desc desc;
+	char *str1 = param+2;
+	char *str2 = skip_string(str1,1);
+	char *p = skip_string(str2,1);
+	int jobid, snum;
+	int uLevel = SVAL(p,2);
+	int function = SVAL(p,4);	/* what is this ?? */
+	int i;
+	char *s = data;
+	files_struct *fsp;
 
-  printjob_decode(SVAL(p,0), &snum, &jobid);
+	printjob_decode(SVAL(p,0), &snum, &jobid);
    
-  *rparam_len = 4;
-  *rparam = REALLOC(*rparam,*rparam_len);
+	*rparam_len = 4;
+	*rparam = REALLOC(*rparam,*rparam_len);
   
-  *rdata_len = 0;
-  
-  /* check it's a supported varient */
-  if ((strcmp(str1,"WWsTP")) || (!check_printjob_info(&desc,uLevel,str2)))
-    return(False);
+	*rdata_len = 0;
+	
+	/* check it's a supported varient */
+	if ((strcmp(str1,"WWsTP")) || 
+	    (!check_printjob_info(&desc,uLevel,str2)))
+		return(False);
    
-  switch (function) {
-  case 0x6:	/* change job place in the queue, data gives the new place */
-    if (snum >= 0 && VALID_SNUM(snum))
-      {
-	print_queue_struct *queue=NULL;
-	int count;
+	switch (function) {
+	case 0x6:	/* change job place in the queue, 
+			   data gives the new place */
+		if (snum >= 0 && VALID_SNUM(snum)) {
+			print_queue_struct *queue=NULL;
+			int count;
   
-	lpq_reset(snum);
-	count = get_printqueue(snum,conn,&queue,NULL);
-	for (i=0;i<count;i++)	/* find job */
-	  if ((queue[i].job&0xFF) == jobid) break;
+			lpq_reset(snum);
+			count = get_printqueue(snum,conn,&queue,NULL);
+			for (i=0;i<count;i++)	/* find job */
+				if ((queue[i].job&0xFF) == jobid) break;
  	    
-	if (i==count) {
-	  desc.errcode=NERR_JobNotFound;
-	  if (queue) free(queue);
-	}
-	else {
-	  desc.errcode=NERR_Success;
-	  i++;
+			if (i==count) {
+				desc.errcode=NERR_JobNotFound;
+				if (queue) free(queue);
+			} else {
+				desc.errcode=NERR_Success;
+				i++;
 #if 0	
-	  {
-	    int place= SVAL(data,0);
-	    /* we currently have no way of doing this. Can any unix do it? */
-	    if (i < place)	/* move down */;
-	    else if (i > place )	/* move up */;
-	  }
+				{
+					int place= SVAL(data,0);
+					/* we currently have no way of
+					   doing this. Can any unix do it? */
+					if (i < place)	/* move down */;
+					else if (i > place )	/* move up */;
+				}
 #endif
-	  desc.errcode=NERR_notsupported; /* not yet supported */
-	  if (queue) free(queue);
-	}
-      }
-    else desc.errcode=NERR_JobNotFound;
-    break;
-  case 0xb:   /* change print job name, data gives the name */
-    /* jobid, snum should be zero */
-    if (isalpha((int)*s))
-      {
-	pstring name;
-	int l = 0;
-	while (l<64 && *s)
-	  {
-	    if (issafe(*s)) name[l++] = *s;
-	    s++;
-	  }      
-	name[l] = 0;
+				desc.errcode=NERR_notsupported; /* not yet 
+								   supported */
+				if (queue) free(queue);
+			}
+		} else {
+			desc.errcode=NERR_JobNotFound;
+		}
+		break;
+
+	case 0xb:   /* change print job name, data gives the name */
+		/* jobid, snum should be zero */
+		if (isalpha((int)*s)) {
+			pstring name;
+			int l = 0;
+			while (l<64 && *s) {
+				if (issafe(*s)) name[l++] = *s;
+				s++;
+			}      
+			name[l] = 0;
 	
-	DEBUG(3,("Setting print name to %s\n",name));
+			DEBUG(3,("Setting print name to %s\n",name));
 	
-        become_root(True);
-
-	for (i=0;i<MAX_FNUMS;i++)
-	  if (Files[i].open && Files[i].print_file)
-	    {
-	      pstring wd;
-	      connection_struct *fconn = Files[i].conn;
-	      GetWd(wd);
-	      unbecome_user();
+			fsp = file_find_print();	
+
+			if (fsp) {
+				connection_struct *fconn = fsp->conn;
+				unbecome_user();
 	      
-	      if (!become_user(fconn,vuid) || 
-		  !become_service(fconn,True))
-		break;
+				if (!become_user(fconn,vuid) || 
+				    !become_service(fconn,True))
+					break;
 	      
-	      if (sys_rename(Files[i].fsp_name,name) == 0) {
-		      string_set(&Files[i].fsp_name,name);
-	      }
-	      break;
-	    }
+				if (sys_rename(fsp->fsp_name,name) == 0) {
+					string_set(&fsp->fsp_name,name);
+				}
+				break;
+			}
+		}
+		desc.errcode=NERR_Success;
+		break;
 
-         unbecome_root(True);
-      }
-    desc.errcode=NERR_Success;
-  
-    break;
-  default:			/* not implemented */
-    return False;
-  }
+	default:			/* not implemented */
+		return False;
+	}
  
-  SSVALS(*rparam,0,desc.errcode);
-  SSVAL(*rparam,2,0);		/* converter word */
-  
-  return(True);
+	SSVALS(*rparam,0,desc.errcode);
+	SSVAL(*rparam,2,0);		/* converter word */
+	
+	return(True);
 }
 
 
diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index 94ecbfea494..d396b05a629 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -24,8 +24,7 @@
 
 extern int DEBUGLEVEL;
 extern int Protocol;
-extern int chain_fnum;
-extern files_struct Files[];
+extern files_struct *chain_fsp;
 extern int Client;  
 extern int oplock_sock;
 extern int smb_read_error;
@@ -388,7 +387,8 @@ static int nt_open_pipe(char *fname, connection_struct *conn,
   if (pnum < 0)
     return(ERROR(ERRSRV,ERRnofids));
 
-  *ppnum = pnum + 0x800; /* Mark file handle up into high range. */
+  *ppnum = pnum + PIPE_HANDLE_OFFSET; /* Mark file handle up into high
+					 range. */
   return 0;
 }
 
@@ -399,7 +399,6 @@ int reply_ntcreate_and_X(connection_struct *conn,
 			 char *inbuf,char *outbuf,int length,int bufsize)
 {  
 	pstring fname;
-	int fnum = -1;
 	uint32 flags = IVAL(inbuf,smb_ntcreate_Flags);
 	uint32 desired_access = IVAL(inbuf,smb_ntcreate_DesiredAccess);
 	uint32 file_attributes = IVAL(inbuf,smb_ntcreate_FileAttributes);
@@ -413,7 +412,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
 	/* Breakout the oplock request bits so we can set the
 	   reply bits separately. */
 	int oplock_request = 0;
-	int unixmode;
+	int unixmode, pnum = -1;
 	int fmode=0,mtime=0,rmode=0;
 	off_t file_len = 0;
 	struct stat sbuf;
@@ -449,10 +448,9 @@ int reply_ntcreate_and_X(connection_struct *conn,
 	
 	/* If it's an IPC, use the pipe handler. */
 	if (IS_IPC(conn)) {
-		int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &fnum);
+		int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum);
 		if(ret != 0)
 			return ret;
-		fsp = &Files[fnum];
 		smb_action = FILE_WAS_OPENED;
 	} else {
 
@@ -468,20 +466,18 @@ int reply_ntcreate_and_X(connection_struct *conn,
 		
 		unix_convert(fname,conn,0,&bad_path);
 		
-		fnum = find_free_file();
-		if (fnum < 0) {
+		fsp = find_free_file();
+		if (!fsp) {
 			restore_case_semantics(file_attributes);
 			return(ERROR(ERRSRV,ERRnofids));
 		}
 		
-		fsp = &Files[fnum];
-		
 		if (!check_name(fname,conn)) { 
 			if((errno == ENOENT) && bad_path) {
 				unix_ERR_class = ERRDOS;
 				unix_ERR_code = ERRbadpath;
 			}
-			fsp->reserved = False;
+			file_free(fsp);
 			
 			restore_case_semantics(file_attributes);
 			
@@ -500,13 +496,13 @@ int reply_ntcreate_and_X(connection_struct *conn,
 		if(flags & OPEN_DIRECTORY) {
 			oplock_request = 0;
 			
-			open_directory(fnum, conn, fname, smb_ofun, 
+			open_directory(fsp, conn, fname, smb_ofun, 
 				       unixmode, &smb_action);
 			
 			restore_case_semantics(file_attributes);
 
 			if(!fsp->open) {
-				fsp->reserved = False;
+				file_free(fsp);
 				return(UNIXERROR(ERRDOS,ERRnoaccess));
 			}
 		} else {
@@ -527,7 +523,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
 			 * before issuing an oplock break request to
 			 * our client. JRA.  */
 
-			open_file_shared(fnum,conn,fname,smb_open_mode,
+			open_file_shared(fsp,conn,fname,smb_open_mode,
 					 smb_ofun,unixmode,
 					 oplock_request,&rmode,&smb_action);
 
@@ -551,10 +547,10 @@ int reply_ntcreate_and_X(connection_struct *conn,
 				if(errno == EISDIR) {
 					oplock_request = 0;
 					
-					open_directory(fnum, conn, fname, smb_ofun, unixmode, &smb_action);
+					open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action);
 					
 					if(!fsp->open) {
-						fsp->reserved = False;
+						file_free(fsp);
 						restore_case_semantics(file_attributes);
 						return(UNIXERROR(ERRDOS,ERRnoaccess));
 					}
@@ -564,7 +560,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
 						unix_ERR_code = ERRbadpath;
 					}
 					
-					fsp->reserved = False;
+					file_free(fsp);
 					
 					restore_case_semantics(file_attributes);
 					
@@ -575,13 +571,13 @@ int reply_ntcreate_and_X(connection_struct *conn,
 		
 		if(fsp->is_directory) {
 			if(sys_stat(fsp->fsp_name, &sbuf) != 0) {
-				close_directory(fnum);
+				close_directory(fsp);
 				restore_case_semantics(file_attributes);
 				return(ERROR(ERRDOS,ERRnoaccess));
 			}
 		} else {
 			if (fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
-				close_file(fnum,False);
+				close_file(fsp,False);
 				restore_case_semantics(file_attributes);
 				return(ERROR(ERRDOS,ERRnoaccess));
 			} 
@@ -595,7 +591,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
 			fmode = FILE_ATTRIBUTE_NORMAL;
 		mtime = sbuf.st_mtime;
 		if (!fsp->is_directory && (fmode & aDIR)) {
-			close_file(fnum,False);
+			close_file(fsp,False);
 			return(ERROR(ERRDOS,ERRnoaccess));
 		} 
 		
@@ -623,7 +619,11 @@ int reply_ntcreate_and_X(connection_struct *conn,
 	
 	SCVAL(p,0, (smb_action & EXTENDED_OPLOCK_GRANTED ? 1 : 0));
 	p++;
-	SSVAL(p,0,fnum);
+	if (IS_IPC(conn)) {
+		SSVAL(p,0,pnum);
+	} else {
+		SSVAL(p,0,fsp->fnum);
+	}
 	p += 2;
 	SIVAL(p,0,smb_action);
 	p += 4;
@@ -664,11 +664,10 @@ int reply_ntcreate_and_X(connection_struct *conn,
 		SCVAL(p,0,fsp->is_directory ? 1 : 0);
 	}
 	
-	chain_fnum = fnum;
+	chain_fsp = fsp;
 
-	
-	DEBUG(5,("reply_ntcreate_and_X: open fnum = %d, name = %s\n",
-		 fnum, fsp->fsp_name));
+	DEBUG(5,("reply_ntcreate_and_X: open name = %s\n",
+		 fsp->fsp_name));
 
 	return chain_reply(inbuf,outbuf,length,bufsize);
 }
@@ -683,7 +682,6 @@ static int call_nt_transact_create(connection_struct *conn,
 				   char **ppdata)
 {
   pstring fname;
-  int fnum = -1;
   char *params = *ppparams;
   uint32 flags = IVAL(params,0);
   uint32 desired_access = IVAL(params,8);
@@ -698,7 +696,7 @@ static int call_nt_transact_create(connection_struct *conn,
   /* Breakout the oplock request bits so we can set the
      reply bits separately. */
   int oplock_request = 0;
-  int unixmode;
+  int unixmode, pnum = -1;
   int fmode=0,mtime=0,rmode=0;
   off_t file_len = 0;
   struct stat sbuf;
@@ -732,7 +730,7 @@ static int call_nt_transact_create(connection_struct *conn,
 
   /* If it's an IPC, use the pipe handler. */
   if (IS_IPC(conn)) {
-    int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &fnum);
+    int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum);
     if(ret != 0)
       return ret;
     smb_action = FILE_WAS_OPENED;
@@ -745,14 +743,12 @@ static int call_nt_transact_create(connection_struct *conn,
 
     unix_convert(fname,conn,0,&bad_path);
     
-    fnum = find_free_file();
-    if (fnum < 0) {
-      restore_case_semantics(file_attributes);
-      return(ERROR(ERRSRV,ERRnofids));
+    fsp = find_free_file();
+    if (!fsp) {
+	    restore_case_semantics(file_attributes);
+	    return(ERROR(ERRSRV,ERRnofids));
     }
 
-    fsp = &Files[fnum];
-
     if (!check_name(fname,conn)) { 
       if((errno == ENOENT) && bad_path) {
         unix_ERR_class = ERRDOS;
@@ -784,10 +780,10 @@ static int call_nt_transact_create(connection_struct *conn,
        * CreateDirectory() call.
        */
 
-      open_directory(fnum, conn, fname, smb_ofun, unixmode, &smb_action);
+      open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action);
 
       if(!fsp->open) {
-        fsp->reserved = False;
+        file_free(fsp);
         return(UNIXERROR(ERRDOS,ERRnoaccess));
       }
     } else {
@@ -796,7 +792,7 @@ static int call_nt_transact_create(connection_struct *conn,
        * Ordinary file case.
        */
 
-      open_file_shared(fnum,conn,fname,smb_open_mode,smb_ofun,unixmode,
+      open_file_shared(fsp,conn,fname,smb_open_mode,smb_ofun,unixmode,
                        oplock_request,&rmode,&smb_action);
 
       if (!fsp->open) { 
@@ -804,7 +800,7 @@ static int call_nt_transact_create(connection_struct *conn,
           unix_ERR_class = ERRDOS;
           unix_ERR_code = ERRbadpath;
         }
-        fsp->reserved = False;
+        file_free(fsp);
 
         restore_case_semantics(file_attributes);
 
@@ -812,7 +808,7 @@ static int call_nt_transact_create(connection_struct *conn,
       } 
   
       if (fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
-        close_file(fnum,False);
+        close_file(fsp,False);
 
         restore_case_semantics(file_attributes);
 
@@ -826,7 +822,7 @@ static int call_nt_transact_create(connection_struct *conn,
       mtime = sbuf.st_mtime;
 
       if (fmode & aDIR) {
-        close_file(fnum,False);
+        close_file(fsp,False);
         restore_case_semantics(file_attributes);
         return(ERROR(ERRDOS,ERRnoaccess));
       } 
@@ -855,7 +851,11 @@ static int call_nt_transact_create(connection_struct *conn,
   p = params;
   SCVAL(p,0, (smb_action & EXTENDED_OPLOCK_GRANTED ? 1 : 0));
   p += 2;
-  SSVAL(p,0,fnum);
+  if (IS_IPC(conn)) {
+	  SSVAL(p,0,pnum);
+  } else {
+	  SSVAL(p,0,fsp->fnum);
+  }
   p += 2;
   SIVAL(p,0,smb_action);
   p += 8;
@@ -940,17 +940,17 @@ static int call_nt_transact_rename(connection_struct *conn,
 {
   char *params = *ppparams;
   pstring new_name;
-  int fnum = SVAL(params, 0);
+  files_struct *fsp = GETFSP(params, 0);
   BOOL replace_if_exists = (SVAL(params,2) & RENAME_REPLACE_IF_EXISTS) ? True : False;
   uint32 fname_len = MIN((((uint32)IVAL(inbuf,smb_nt_TotalParameterCount)-4)),
                          ((uint32)sizeof(new_name)-1));
   int outsize = 0;
 
-  CHECK_FNUM(fnum, conn);
+  CHECK_FSP(fsp, conn);
   StrnCpy(new_name,params+4,fname_len);
   new_name[fname_len] = '\0';
 
-  outsize = rename_internals(conn, inbuf, outbuf, Files[fnum].fsp_name,
+  outsize = rename_internals(conn, inbuf, outbuf, fsp->fsp_name,
                              new_name, replace_if_exists);
   if(outsize == 0) {
     /*
@@ -959,7 +959,7 @@ static int call_nt_transact_rename(connection_struct *conn,
     send_nt_replies(outbuf, bufsize, NULL, 0, NULL, 0);
 
     DEBUG(3,("nt transact rename from = %s, to = %s succeeded.\n", 
-          Files[fnum].fsp_name, new_name));
+          fsp->fsp_name, new_name));
 
     outsize = -1;
   }
@@ -976,7 +976,7 @@ static int call_nt_transact_rename(connection_struct *conn,
 
 typedef struct {
   ubi_slNode msg_next;
-  int fnum;
+  files_struct *fsp;
   connection_struct *conn;
   time_t next_check_time;
   time_t modify_time; /* Info from the directory we're monitoring. */ 
@@ -1023,14 +1023,13 @@ static void change_notify_reply_packet(char *inbuf, int error_class, uint32 erro
 /****************************************************************************
  Delete entries by fnum from the change notify pending queue.
 *****************************************************************************/
-
-void remove_pending_change_notify_requests_by_fid(int fnum)
+void remove_pending_change_notify_requests_by_fid(files_struct *fsp)
 {
   change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
   change_notify_buf *prev = NULL;
 
   while(cnbp != NULL) {
-    if(cnbp->fnum == fnum) {
+    if(cnbp->fsp == fsp) {
       free((char *)ubi_slRemNext( &change_notify_queue, prev));
       cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
       continue;
@@ -1085,9 +1084,8 @@ void process_pending_change_notify_queue(time_t t)
 
   while((cnbp != NULL) && (cnbp->next_check_time <= t)) {
     struct stat st;
-    int fnum = cnbp->fnum;
+    files_struct *fsp = cnbp->fsp;
     connection_struct *conn = cnbp->conn;
-    files_struct *fsp = &Files[fnum];
     uint16 vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : 
                   SVAL(cnbp->request_buf,smb_uid);
 
@@ -1133,8 +1131,8 @@ Error was %s.\n", fsp->fsp_name, strerror(errno) ));
       /*
        * Remove the entry and return a change notify to the client.
        */
-      DEBUG(5,("process_pending_change_notify_queue: directory fnum = %d, name = %s changed\n",
-            fnum, fsp->fsp_name ));
+      DEBUG(5,("process_pending_change_notify_queue: directory name = %s changed\n",
+            fsp->fsp_name ));
       change_notify_reply_packet(cnbp->request_buf,0,NT_STATUS_NOTIFY_ENUM_DIR);
       free((char *)ubi_slRemNext( &change_notify_queue, prev));
       cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
@@ -1164,19 +1162,16 @@ static int call_nt_transact_notify_change(connection_struct *conn,
 {
   char *setup = *ppsetup;
   files_struct *fsp;
-  int fnum = -1;
   change_notify_buf *cnbp;
   struct stat st;
 
-  fnum = SVAL(setup,4);
+  fsp = GETFSP(setup,4);
 
-  DEBUG(3,("call_nt_transact_notify_change: fnum = %d.\n", fnum));
+  DEBUG(3,("call_nt_transact_notify_change\n"));
 
-  if(!VALID_FNUM(fnum))
+  if(!fsp)
     return(ERROR(ERRDOS,ERRbadfid));
 
-  fsp = &Files[fnum];
-
   if((!fsp->open) || (!fsp->is_directory) || (conn != fsp->conn))
     return(ERROR(ERRDOS,ERRbadfid));
 
@@ -1198,14 +1193,14 @@ static int call_nt_transact_notify_change(connection_struct *conn,
    */
 
   if(sys_stat(fsp->fsp_name, &st) < 0) {
-    DEBUG(0,("call_nt_transact_notify_change: Unable to stat fnum = %d, name = %s. \
-Error was %s\n", fnum, fsp->fsp_name, strerror(errno) ));
+    DEBUG(0,("call_nt_transact_notify_change: Unable to stat name = %s. \
+Error was %s\n", fsp->fsp_name, strerror(errno) ));
     free((char *)cnbp);
     return(UNIXERROR(ERRDOS,ERRbadfid));
   }
  
   memcpy(cnbp->request_buf, inbuf, smb_size);
-  cnbp->fnum = fnum;
+  cnbp->fsp = fsp;
   cnbp->conn = conn;
   cnbp->modify_time = st.st_mtime;
   cnbp->status_time = st.st_ctime;
@@ -1221,7 +1216,7 @@ Error was %s\n", fnum, fsp->fsp_name, strerror(errno) ));
   ubi_slAddTail(&change_notify_queue, cnbp);
 
   DEBUG(3,("call_nt_transact_notify_change: notify change called on directory \
-fid=%d, name = %s\n", fnum, fsp->fsp_name ));
+name = %s\n", fsp->fsp_name ));
 
   return -1;
 }
diff --git a/source3/smbd/pipes.c b/source3/smbd/pipes.c
index 2a51e83946a..9ec77c08ca6 100644
--- a/source3/smbd/pipes.c
+++ b/source3/smbd/pipes.c
@@ -44,7 +44,6 @@ extern int Client;
 
 #define VALID_PNUM(pnum)   (((pnum) >= 0) && ((pnum) < MAX_OPEN_PIPES))
 #define OPEN_PNUM(pnum)    (VALID_PNUM(pnum) && Pipes[pnum].open)
-#define PNUM_OK(pnum,c) (OPEN_PNUM(pnum) && (c)==Pipes[pnum].cnum)
 
 /* this macro should always be used to extract an pnum (smb_fid) from
    a packet to ensure chaining works correctly */
@@ -84,7 +83,7 @@ int reply_open_pipe_and_X(connection_struct *conn,
     if( strequal(fname,pipe_names[i].client_pipe) )
       break;
 
-  if ( pipe_names[i].client_pipe == NULL )
+  if (pipe_names[i].client_pipe == NULL)
     return(ERROR(ERRSRV,ERRaccess));
 
   /* Strip \PIPE\ off the name. */
@@ -111,7 +110,9 @@ int reply_open_pipe_and_X(connection_struct *conn,
     rmode = 1;
   }
 
-  SSVAL(outbuf,smb_vwv2, pnum + 0x800); /* mark file handle up into high range */
+  SSVAL(outbuf,smb_vwv2, pnum + PIPE_HANDLE_OFFSET); /* mark file
+							handle up into
+							high range */
   SSVAL(outbuf,smb_vwv3,fmode);
   put_dos_date3(outbuf,smb_vwv4,mtime);
   SIVAL(outbuf,smb_vwv6,size);
@@ -138,12 +139,6 @@ int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
   char *data;
   BOOL ok = False;
 
-/*
-  CHECK_FNUM(fnum,cnum);
-  CHECK_READ(fnum);
-  CHECK_ERROR(fnum);
-*/
-
   set_message(outbuf,12,0,True);
   data = smb_buf(outbuf);
 
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 626d2e9617d..e9a25ea79ac 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -33,9 +33,8 @@ extern int Protocol;
 extern int DEBUGLEVEL;
 extern int max_send;
 extern int max_recv;
-extern int chain_fnum;
+extern files_struct *chain_fsp;
 extern char magic_char;
-extern files_struct Files[];
 extern BOOL case_sensitive;
 extern BOOL case_preserve;
 extern BOOL short_case_preserve;
@@ -44,11 +43,6 @@ extern fstring global_myworkgroup;
 extern int Client;
 extern int global_oplock_break;
 
-/* this macro should always be used to extract an fnum (smb_fid) from
-a packet to ensure chaining works correctly */
-#define GETFNUM(buf,where) (chain_fnum!= -1?chain_fnum:SVAL(buf,where))
-
-
 /****************************************************************************
 report a possible attack via the password buffer overflow bug
 ****************************************************************************/
@@ -1232,7 +1226,6 @@ int reply_fclose(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
   pstring fname;
-  int fnum = -1;
   int outsize = 0;
   int fmode=0;
   int share_mode;
@@ -1250,12 +1243,10 @@ int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   pstrcpy(fname,smb_buf(inbuf)+1);
   unix_convert(fname,conn,0,&bad_path);
     
-  fnum = find_free_file();
-  if (fnum < 0)
+  fsp = find_free_file();
+  if (!fsp)
     return(ERROR(ERRSRV,ERRnofids));
 
-  fsp = &Files[fnum];
-
   if (!check_name(fname,conn))
   {
     if((errno == ENOENT) && bad_path)
@@ -1263,13 +1254,13 @@ int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
  
   unixmode = unix_mode(conn,aARCH);
       
-  open_file_shared(fnum,conn,fname,share_mode,3,unixmode,
+  open_file_shared(fsp,conn,fname,share_mode,3,unixmode,
                    oplock_request,&rmode,NULL);
 
   if (!fsp->open)
@@ -1279,12 +1270,12 @@ int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
   if (fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
-    close_file(fnum,False);
+    close_file(fsp,False);
     return(ERROR(ERRDOS,ERRnoaccess));
   }
     
@@ -1294,12 +1285,12 @@ int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 
   if (fmode & aDIR) {
     DEBUG(3,("attempt to open a directory %s\n",fname));
-    close_file(fnum,False);
+    close_file(fsp,False);
     return(ERROR(ERRDOS,ERRnoaccess));
   }
   
   outsize = set_message(outbuf,7,0,True);
-  SSVAL(outbuf,smb_vwv0,fnum);
+  SSVAL(outbuf,smb_vwv0,fsp->fnum);
   SSVAL(outbuf,smb_vwv1,fmode);
   if(lp_dos_filetime_resolution(SNUM(conn)) )
     put_dos_date3(outbuf,smb_vwv2,mtime & ~1);
@@ -1324,7 +1315,6 @@ int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize)
 {
   pstring fname;
-  int fnum = -1;
   int smb_mode = SVAL(inbuf,smb_vwv3);
   int smb_attr = SVAL(inbuf,smb_vwv5);
   /* Breakout the oplock request bits so we can set the
@@ -1354,12 +1344,10 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   pstrcpy(fname,smb_buf(inbuf));
   unix_convert(fname,conn,0,&bad_path);
     
-  fnum = find_free_file();
-  if (fnum < 0)
+  fsp = find_free_file();
+  if (!fsp)
     return(ERROR(ERRSRV,ERRnofids));
 
-  fsp = &Files[fnum];
-
   if (!check_name(fname,conn))
   {
     if((errno == ENOENT) && bad_path)
@@ -1367,13 +1355,13 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
   unixmode = unix_mode(conn,smb_attr | aARCH);
       
-  open_file_shared(fnum,conn,fname,smb_mode,smb_ofun,unixmode,
+  open_file_shared(fsp,conn,fname,smb_mode,smb_ofun,unixmode,
 		   oplock_request, &rmode,&smb_action);
       
   if (!fsp->open)
@@ -1383,12 +1371,12 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
   if (fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
-    close_file(fnum,False);
+    close_file(fsp,False);
     return(ERROR(ERRDOS,ERRnoaccess));
   }
 
@@ -1396,7 +1384,7 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   fmode = dos_mode(conn,fname,&sbuf);
   mtime = sbuf.st_mtime;
   if (fmode & aDIR) {
-    close_file(fnum,False);
+    close_file(fsp,False);
     return(ERROR(ERRDOS,ERRnoaccess));
   }
 
@@ -1427,7 +1415,7 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   }
 
   set_message(outbuf,15,0,True);
-  SSVAL(outbuf,smb_vwv2,fnum);
+  SSVAL(outbuf,smb_vwv2,fsp->fnum);
   SSVAL(outbuf,smb_vwv3,fmode);
   if(lp_dos_filetime_resolution(SNUM(conn)) )
     put_dos_date3(outbuf,smb_vwv4,mtime & ~1);
@@ -1437,7 +1425,7 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   SSVAL(outbuf,smb_vwv8,rmode);
   SSVAL(outbuf,smb_vwv11,smb_action);
 
-  chain_fnum = fnum;
+  chain_fsp = fsp;
 
   return chain_reply(inbuf,outbuf,length,bufsize);
 }
@@ -1458,16 +1446,7 @@ int reply_ulogoffX(connection_struct *conn, char *inbuf,char *outbuf,int length,
   /* in user level security we are supposed to close any files
      open by this user */
   if ((vuser != 0) && (lp_security() != SEC_SHARE)) {
-    int i;
-    for (i=0;i<MAX_FNUMS;i++) {
-      files_struct *fsp = &Files[i];
-      if ((fsp->vuid == vuid) && fsp->open) {
-        if(!fsp->is_directory)
-          close_file(i,False);
-        else
-          close_directory(i);
-      }
-    }
+	  file_close_user(vuid);
   }
 
   invalidate_vuid(vuid);
@@ -1487,7 +1466,6 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 {
   pstring fname;
   int com;
-  int fnum = -1;
   int outsize = 0;
   int createmode;
   mode_t unixmode;
@@ -1509,12 +1487,10 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   
   unixmode = unix_mode(conn,createmode);
   
-  fnum = find_free_file();
-  if (fnum < 0)
+  fsp = find_free_file();
+  if (!fsp)
     return(ERROR(ERRSRV,ERRnofids));
 
-  fsp = &Files[fnum];
-
   if (!check_name(fname,conn))
   {
     if((errno == ENOENT) && bad_path)
@@ -1522,7 +1498,7 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
@@ -1538,7 +1514,7 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   }
 
   /* Open file in dos compatibility share mode. */
-  open_file_shared(fnum,conn,fname,(DENY_FCB<<4)|0xF, ofun, unixmode, 
+  open_file_shared(fsp,conn,fname,(DENY_FCB<<4)|0xF, ofun, unixmode, 
                    oplock_request, NULL, NULL);
   
   if (!fsp->open)
@@ -1548,12 +1524,12 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
  
   outsize = set_message(outbuf,1,0,True);
-  SSVAL(outbuf,smb_vwv0,fnum);
+  SSVAL(outbuf,smb_vwv0,fsp->fnum);
 
   if (oplock_request && lp_fake_oplocks(SNUM(conn))) {
     CVAL(outbuf,smb_flg) |= CORE_OPLOCK_GRANTED;
@@ -1563,8 +1539,8 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
     CVAL(outbuf,smb_flg) |= CORE_OPLOCK_GRANTED;
  
   DEBUG( 2, ( "new file %s\n", fname ) );
-  DEBUG( 3, ( "mknew %s fd=%d fnum=%d dmode=%d umode=%o\n",
-        fname, fsp->fd_ptr->fd, fnum, createmode, (int)unixmode ) );
+  DEBUG( 3, ( "mknew %s fd=%d dmode=%d umode=%o\n",
+        fname, fsp->fd_ptr->fd, createmode, (int)unixmode ) );
 
   return(outsize);
 }
@@ -1577,7 +1553,6 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 {
   pstring fname;
   pstring fname2;
-  int fnum = -1;
   int outsize = 0;
   int createmode;
   mode_t unixmode;
@@ -1592,12 +1567,10 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   
   unixmode = unix_mode(conn,createmode);
   
-  fnum = find_free_file();
-  if (fnum < 0)
+  fsp = find_free_file();
+  if (fsp)
     return(ERROR(ERRSRV,ERRnofids));
 
-  fsp = &Files[fnum];
-
   if (!check_name(fname,conn))
   {
     if((errno == ENOENT) && bad_path)
@@ -1605,7 +1578,7 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
@@ -1613,7 +1586,7 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 
   /* Open file in dos compatibility share mode. */
   /* We should fail if file exists. */
-  open_file_shared(fnum,conn,fname2,(DENY_FCB<<4)|0xF, 0x10, unixmode, 
+  open_file_shared(fsp,conn,fname2,(DENY_FCB<<4)|0xF, 0x10, unixmode, 
                    oplock_request, NULL, NULL);
 
   if (!fsp->open)
@@ -1623,12 +1596,12 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
   outsize = set_message(outbuf,1,2 + strlen(fname2),True);
-  SSVAL(outbuf,smb_vwv0,fnum);
+  SSVAL(outbuf,smb_vwv0,fsp->fnum);
   CVAL(smb_buf(outbuf),0) = 4;
   pstrcpy(smb_buf(outbuf) + 1,fname2);
 
@@ -1640,8 +1613,8 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
     CVAL(outbuf,smb_flg) |= CORE_OPLOCK_GRANTED;
 
   DEBUG( 2, ( "created temp file %s\n", fname2 ) );
-  DEBUG( 3, ( "ctemp %s fd=%d fnum=%d dmode=%d umode=%o\n",
-        fname2, fsp->fd_ptr->fd, fnum, createmode, (int)unixmode ) );
+  DEBUG( 3, ( "ctemp %s fd=%d dmode=%d umode=%o\n",
+        fname2, fsp->fd_ptr->fd, createmode, (int)unixmode ) );
 
   return(outsize);
 }
@@ -1777,7 +1750,7 @@ int reply_unlink(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 ****************************************************************************/
 int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_size, int dum_buffsize)
 {
-  int maxcount,mincount,fnum;
+  int maxcount,mincount;
   int nread = 0;
   uint32 startpos;
   char *header = outbuf;
@@ -1800,7 +1773,7 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
     return -1;
   }
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  fsp = GETFSP(inbuf,smb_vwv0);
 
   startpos = IVAL(inbuf,smb_vwv1);
   maxcount = SVAL(inbuf,smb_vwv3);
@@ -1810,23 +1783,18 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
   maxcount = MIN(65535,maxcount);
   maxcount = MAX(mincount,maxcount);
 
-  if (!FNUM_OK(fnum,conn) || !Files[fnum].can_read)
-  {
-    DEBUG(3,("fnum %d not open in readbraw - cache prime?\n",fnum));
-    _smb_setlen(header,0);
-    transfer_file(0,Client,0,header,4,0);
-    return(-1);
-  }
-  else
-  {
-    fsp = &Files[fnum];
-
-    fd = fsp->fd_ptr->fd;
-    fname = fsp->fsp_name;
+  if (!FNUM_OK(fsp,conn) || !fsp->can_read) {
+	  DEBUG(3,("fnum %d not open in readbraw - cache prime?\n",fsp->fnum));
+	  _smb_setlen(header,0);
+	  transfer_file(0,Client,0,header,4,0);
+	  return(-1);
+  } else {
+	  fd = fsp->fd_ptr->fd;
+	  fname = fsp->fsp_name;
   }
 
 
-  if (!is_locked(fnum,conn,maxcount,startpos, F_RDLCK))
+  if (!is_locked(fsp,conn,maxcount,startpos, F_RDLCK))
   {
     int size = fsp->size;
     int sizeneeded = startpos + maxcount;
@@ -1846,7 +1814,7 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
     nread = 0;
   
   DEBUG( 3, ( "readbraw fnum=%d start=%d max=%d min=%d nread=%d\n",
-	      fnum, startpos,
+	      fsp->fnum, startpos,
 	      maxcount, mincount, nread ) );
   
 #if UNSAFE_READRAW
@@ -1860,7 +1828,7 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
 #endif
 
     if ((nread-predict) > 0)
-      seek_file(fnum,startpos + predict);
+      seek_file(fsp,startpos + predict);
     
     ret = transfer_file(fd,Client,nread-predict,header,4+predict,
 			startpos+predict);
@@ -1871,7 +1839,7 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
 	     fname,startpos,nread,ret));
 
 #else
-  ret = read_file(fnum,header+4,startpos,nread);
+  ret = read_file(fsp,header+4,startpos,nread);
   if (ret < mincount) ret = 0;
 
   _smb_setlen(header,ret);
@@ -1888,19 +1856,17 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
 ****************************************************************************/
 int reply_lockread(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsiz)
 {
-  int fnum;
   int nread = -1;
   char *data;
   int outsize = 0;
   uint32 startpos, numtoread;
   int eclass;
   uint32 ecode;
-  
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_READ(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_READ(fsp);
+  CHECK_ERROR(fsp);
 
   numtoread = SVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv2);
@@ -1909,10 +1875,10 @@ int reply_lockread(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
   numtoread = MIN(BUFFER_SIZE-outsize,numtoread);
   data = smb_buf(outbuf) + 3;
   
-  if(!do_lock( fnum, conn, numtoread, startpos, F_RDLCK, &eclass, &ecode))
+  if(!do_lock( fsp, conn, numtoread, startpos, F_RDLCK, &eclass, &ecode))
     return (ERROR(eclass,ecode));
 
-  nread = read_file(fnum,data,startpos,numtoread);
+  nread = read_file(fsp,data,startpos,numtoread);
 
   if (nread < 0)
     return(UNIXERROR(ERRDOS,ERRnoaccess));
@@ -1923,7 +1889,7 @@ int reply_lockread(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
   SSVAL(smb_buf(outbuf),1,nread);
 
   DEBUG( 3, ( "lockread fnum=%d num=%d nread=%d\n",
-            fnum, numtoread, nread ) );
+            fsp->fnum, numtoread, nread ) );
 
   return(outsize);
 }
@@ -1934,17 +1900,16 @@ int reply_lockread(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
 ****************************************************************************/
 int reply_read(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int numtoread,fnum;
+  int numtoread;
   int nread = 0;
   char *data;
   uint32 startpos;
   int outsize = 0;
-  
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_READ(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_READ(fsp);
+  CHECK_ERROR(fsp);
 
   numtoread = SVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv2);
@@ -1953,11 +1918,11 @@ int reply_read(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   numtoread = MIN(BUFFER_SIZE-outsize,numtoread);
   data = smb_buf(outbuf) + 3;
   
-  if (is_locked(fnum,conn,numtoread,startpos, F_RDLCK))
+  if (is_locked(fsp,conn,numtoread,startpos, F_RDLCK))
     return(ERROR(ERRDOS,ERRlock));	
 
   if (numtoread > 0)
-    nread = read_file(fnum,data,startpos,numtoread);
+    nread = read_file(fsp,data,startpos,numtoread);
   
   if (nread < 0)
     return(UNIXERROR(ERRDOS,ERRnoaccess));
@@ -1969,7 +1934,7 @@ int reply_read(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   SSVAL(smb_buf(outbuf),1,nread);
   
   DEBUG( 3, ( "read fnum=%d num=%d nread=%d\n",
-            fnum, numtoread, nread ) );
+            fsp->fnum, numtoread, nread ) );
 
   return(outsize);
 }
@@ -1980,7 +1945,7 @@ int reply_read(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 ****************************************************************************/
 int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize)
 {
-  int fnum = GETFNUM(inbuf,smb_vwv2);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv2);
   uint32 smb_offs = IVAL(inbuf,smb_vwv3);
   int smb_maxcnt = SVAL(inbuf,smb_vwv5);
   int smb_mincnt = SVAL(inbuf,smb_vwv6);
@@ -1992,16 +1957,16 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   if (IS_IPC(conn))
     return reply_pipe_read_and_X(inbuf,outbuf,length,bufsize);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_READ(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_READ(fsp);
+  CHECK_ERROR(fsp);
 
   set_message(outbuf,12,0,True);
   data = smb_buf(outbuf);
 
-  if (is_locked(fnum,conn,smb_maxcnt,smb_offs, F_RDLCK))
+  if (is_locked(fsp,conn,smb_maxcnt,smb_offs, F_RDLCK))
     return(ERROR(ERRDOS,ERRlock));
-  nread = read_file(fnum,data,smb_offs,smb_maxcnt);
+  nread = read_file(fsp,data,smb_offs,smb_maxcnt);
   ok = True;
   
   if (nread < 0)
@@ -2012,9 +1977,9 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   SSVAL(smb_buf(outbuf),-2,nread);
   
   DEBUG( 3, ( "readX fnum=%d min=%d max=%d nread=%d\n",
-	    fnum, smb_mincnt, smb_maxcnt, nread ) );
+	      fsp->fnum, smb_mincnt, smb_maxcnt, nread ) );
 
-  chain_fnum = fnum;
+  chain_fsp = fsp;
 
   return chain_reply(inbuf,outbuf,length,bufsize);
 }
@@ -2028,18 +1993,16 @@ int reply_writebraw(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
   int nwritten=0;
   int total_written=0;
   int numtowrite=0;
-  int fnum;
   int outsize = 0;
   long startpos;
   char *data=NULL;
   BOOL write_through;
   int tcount;
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
+  CHECK_ERROR(fsp);
   
   tcount = IVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv3);
@@ -2059,17 +2022,17 @@ int reply_writebraw(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
   CVAL(inbuf,smb_com) = SMBwritec;
   CVAL(outbuf,smb_com) = SMBwritec;
 
-  if (is_locked(fnum,conn,tcount,startpos, F_WRLCK))
+  if (is_locked(fsp,conn,tcount,startpos, F_WRLCK))
     return(ERROR(ERRDOS,ERRlock));
 
-  if (seek_file(fnum,startpos) != startpos)
+  if (seek_file(fsp,startpos) != startpos)
     DEBUG(0,("couldn't seek to %ld in writebraw\n",startpos));
 
   if (numtowrite>0)
-    nwritten = write_file(fnum,data,numtowrite);
+    nwritten = write_file(fsp,data,numtowrite);
   
   DEBUG(3,("writebraw1 fnum=%d start=%ld num=%d wrote=%d sync=%d\n",
-	   fnum, startpos, numtowrite, nwritten, write_through));
+	   fsp->fnum, startpos, numtowrite, nwritten, write_through));
 
   if (nwritten < numtowrite) 
     return(UNIXERROR(ERRHRD,ERRdiskfull));
@@ -2097,7 +2060,7 @@ int reply_writebraw(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
 	     tcount,nwritten,numtowrite));
   }
 
-  nwritten = transfer_file(Client,Files[fnum].fd_ptr->fd,numtowrite,NULL,0,
+  nwritten = transfer_file(Client,fsp->fd_ptr->fd,numtowrite,NULL,0,
 			   startpos+nwritten);
   total_written += nwritten;
   
@@ -2112,10 +2075,10 @@ int reply_writebraw(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
   }
 
   if (lp_syncalways(SNUM(conn)) || write_through)
-    sync_file(conn,fnum);
+    sync_file(conn,fsp);
 
   DEBUG(3,("writebraw2 fnum=%d start=%ld num=%d wrote=%d\n",
-	   fnum, startpos, numtowrite, total_written));
+	   fsp->fnum, startpos, numtowrite, total_written));
 
   /* we won't return a status if write through is not selected - this 
      follows what WfWg does */
@@ -2131,28 +2094,26 @@ int reply_writebraw(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
 ****************************************************************************/
 int reply_writeunlock(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int fnum;
   int nwritten = -1;
   int outsize = 0;
   char *data;
   uint32 numtowrite,startpos;
   int eclass;
   uint32 ecode;
-  
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
+  CHECK_ERROR(fsp);
 
   numtowrite = SVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv2);
   data = smb_buf(inbuf) + 3;
   
-  if (is_locked(fnum,conn,numtowrite,startpos, F_WRLCK))
+  if (is_locked(fsp,conn,numtowrite,startpos, F_WRLCK))
     return(ERROR(ERRDOS,ERRlock));
 
-  seek_file(fnum,startpos);
+  seek_file(fsp,startpos);
 
   /* The special X/Open SMB protocol handling of
      zero length writes is *NOT* done for
@@ -2160,15 +2121,15 @@ int reply_writeunlock(connection_struct *conn, char *inbuf,char *outbuf, int dum
   if(numtowrite == 0)
     nwritten = 0;
   else
-    nwritten = write_file(fnum,data,numtowrite);
+    nwritten = write_file(fsp,data,numtowrite);
   
   if (lp_syncalways(SNUM(conn)))
-    sync_file(conn,fnum);
+    sync_file(conn,fsp);
 
   if(((nwritten == 0) && (numtowrite != 0))||(nwritten < 0))
     return(UNIXERROR(ERRDOS,ERRnoaccess));
 
-  if(!do_unlock(fnum, conn, numtowrite, startpos, &eclass, &ecode))
+  if(!do_unlock(fsp, conn, numtowrite, startpos, &eclass, &ecode))
     return(ERROR(eclass,ecode));
 
   outsize = set_message(outbuf,1,0,True);
@@ -2176,7 +2137,7 @@ int reply_writeunlock(connection_struct *conn, char *inbuf,char *outbuf, int dum
   SSVAL(outbuf,smb_vwv0,nwritten);
   
   DEBUG( 3, ( "writeunlock fnum=%d num=%d wrote=%d\n",
-	    fnum, numtowrite, nwritten ) );
+	      fsp->fnum, numtowrite, nwritten ) );
 
   return(outsize);
 }
@@ -2187,37 +2148,36 @@ int reply_writeunlock(connection_struct *conn, char *inbuf,char *outbuf, int dum
 ****************************************************************************/
 int reply_write(connection_struct *conn, char *inbuf,char *outbuf,int dum_size,int dum_buffsize)
 {
-  int numtowrite,fnum;
+  int numtowrite;
   int nwritten = -1;
   int outsize = 0;
   int startpos;
   char *data;
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
+  CHECK_ERROR(fsp);
 
   numtowrite = SVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv2);
   data = smb_buf(inbuf) + 3;
   
-  if (is_locked(fnum,conn,numtowrite,startpos, F_WRLCK))
+  if (is_locked(fsp,conn,numtowrite,startpos, F_WRLCK))
     return(ERROR(ERRDOS,ERRlock));
 
-  seek_file(fnum,startpos);
+  seek_file(fsp,startpos);
 
   /* X/Open SMB protocol says that if smb_vwv1 is
      zero then the file size should be extended or
      truncated to the size given in smb_vwv[2-3] */
   if(numtowrite == 0)
-    nwritten = set_filelen(Files[fnum].fd_ptr->fd, startpos);
+    nwritten = set_filelen(fsp->fd_ptr->fd, startpos);
   else
-    nwritten = write_file(fnum,data,numtowrite);
+    nwritten = write_file(fsp,data,numtowrite);
   
   if (lp_syncalways(SNUM(conn)))
-    sync_file(conn,fnum);
+    sync_file(conn,fsp);
 
   if(((nwritten == 0) && (numtowrite != 0))||(nwritten < 0))
     return(UNIXERROR(ERRDOS,ERRnoaccess));
@@ -2232,7 +2192,7 @@ int reply_write(connection_struct *conn, char *inbuf,char *outbuf,int dum_size,i
   }
   
   DEBUG(3,("write fnum=%d num=%d wrote=%d\n",
-	   fnum, numtowrite, nwritten));
+	   fsp->fnum, numtowrite, nwritten));
 
   return(outsize);
 }
@@ -2243,7 +2203,7 @@ int reply_write(connection_struct *conn, char *inbuf,char *outbuf,int dum_size,i
 ****************************************************************************/
 int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize)
 {
-  int fnum = GETFNUM(inbuf,smb_vwv2);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv2);
   uint32 smb_offs = IVAL(inbuf,smb_vwv3);
   int smb_dsize = SVAL(inbuf,smb_vwv10);
   int smb_doff = SVAL(inbuf,smb_vwv11);
@@ -2251,16 +2211,16 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
   int nwritten = -1;
   char *data;
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
+  CHECK_ERROR(fsp);
 
   data = smb_base(inbuf) + smb_doff;
 
-  if (is_locked(fnum,conn,smb_dsize,smb_offs, F_WRLCK))
+  if (is_locked(fsp,conn,smb_dsize,smb_offs, F_WRLCK))
     return(ERROR(ERRDOS,ERRlock));
 
-  seek_file(fnum,smb_offs);
+  seek_file(fsp,smb_offs);
   
   /* X/Open SMB protocol says that, unlike SMBwrite
      if the length is zero then NO truncation is
@@ -2269,7 +2229,7 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
   if(smb_dsize == 0)
     nwritten = 0;
   else
-    nwritten = write_file(fnum,data,smb_dsize);
+    nwritten = write_file(fsp,data,smb_dsize);
   
   if(((nwritten == 0) && (smb_dsize != 0))||(nwritten < 0))
     return(UNIXERROR(ERRDOS,ERRnoaccess));
@@ -2284,12 +2244,12 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
   }
 
   DEBUG(3,("writeX fnum=%d num=%d wrote=%d\n",
-	   fnum, smb_dsize, nwritten));
+	   fsp->fnum, smb_dsize, nwritten));
 
-  chain_fnum = fnum;
+  chain_fsp = fsp;
 
   if (lp_syncalways(SNUM(conn)) || write_through)
-    sync_file(conn,fnum);
+    sync_file(conn,fsp);
 
   return chain_reply(inbuf,outbuf,length,bufsize);
 }
@@ -2300,17 +2260,14 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
 ****************************************************************************/
 int reply_lseek(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int fnum;
   uint32 startpos;
   int32 res= -1;
   int mode,umode;
   int outsize = 0;
-  files_struct *fsp;
- 
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_ERROR(fsp);
 
   mode = SVAL(inbuf,smb_vwv1) & 3;
   startpos = IVAL(inbuf,smb_vwv2);
@@ -2324,8 +2281,6 @@ int reply_lseek(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
       umode = SEEK_SET; break;
     }
 
-  fsp = &Files[fnum];
-  
   res = lseek(fsp->fd_ptr->fd,startpos,umode);
   fsp->pos = res;
   
@@ -2333,7 +2288,7 @@ int reply_lseek(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
   SIVALS(outbuf,smb_vwv0,res);
   
   DEBUG(3,("lseek fnum=%d ofs=%d mode=%d\n",
-	   fnum, startpos, mode));
+	   fsp->fnum, startpos, mode));
 
   return(outsize);
 }
@@ -2344,28 +2299,21 @@ int reply_lseek(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 ****************************************************************************/
 int reply_flush(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int fnum;
   int outsize = set_message(outbuf,0,0,True);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  if (fnum != 0xFFFF) {
-    CHECK_FNUM(fnum,conn);
-    CHECK_ERROR(fnum);
+  if (fsp) {
+	  CHECK_FSP(fsp,conn);
+	  CHECK_ERROR(fsp);
   }
 
-  if (fnum == 0xFFFF) {
-	  int i;
-	  for (i=0;i<MAX_FNUMS;i++) {
-		  if (OPEN_FNUM(i)) {
-			  sync_file(conn,i);
-		  }
-	  }
+  if (!fsp) {
+	  file_sync_all(conn);
   } else {
-	  sync_file(conn,fnum);
+	  sync_file(conn,fsp);
   }
 
-  DEBUG( 3, ( "flush fnum=%d\n", fnum ) );
+  DEBUG(3,("flush\n"));
   return(outsize);
 }
 
@@ -2389,7 +2337,6 @@ int reply_exit(connection_struct *conn,
 int reply_close(connection_struct *conn,
 		char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-	int fnum;
 	int outsize = 0;
 	time_t mtime;
 	int32 eclass = 0, err = 0;
@@ -2402,18 +2349,16 @@ int reply_close(connection_struct *conn,
 		return reply_pipe_close(conn, inbuf,outbuf);
 	}
 
-	fnum = GETFNUM(inbuf,smb_vwv0);
+	fsp = GETFSP(inbuf,smb_vwv0);
 
 	/*
-	 * We can only use CHECK_FNUM if we know it's not a directory.
+	 * We can only use CHECK_FSP if we know it's not a directory.
 	 */
 
-	if(!(VALID_FNUM(fnum) && Files[fnum].open && Files[fnum].is_directory))
-		CHECK_FNUM(fnum,conn);
+	if(!(fsp && fsp->open && fsp->is_directory))
+		CHECK_FSP(fsp,conn);
 
-	fsp = &Files[fnum];
-
-	if(HAS_CACHED_ERROR(fnum)) {
+	if(HAS_CACHED_ERROR(fsp)) {
 		eclass = fsp->wbmpx_ptr->wr_errclass;
 		err = fsp->wbmpx_ptr->wr_error;
 	}
@@ -2423,8 +2368,8 @@ int reply_close(connection_struct *conn,
 		 * Special case - close NT SMB directory
 		 * handle.
 		 */
-		DEBUG(3,("close directory fnum=%d\n", fnum));
-		close_directory(fnum);
+		DEBUG(3,("close directory fnum=%d\n", fsp->fnum));
+		close_directory(fsp);
 	} else {
 		/*
 		 * Close ordinary file.
@@ -2435,10 +2380,10 @@ int reply_close(connection_struct *conn,
 		set_filetime(conn, fsp->fsp_name,mtime);
 
 		DEBUG(3,("close fd=%d fnum=%d (numopen=%d)\n",
-			 fsp->fd_ptr->fd, fnum,
+			 fsp->fd_ptr->fd, fsp->fnum,
 			 conn->num_files_open));
   
-		close_file(fnum,True);
+		close_file(fsp,True);
 	}  
 
 	/* We have a cached error */
@@ -2455,37 +2400,36 @@ int reply_close(connection_struct *conn,
 int reply_writeclose(connection_struct *conn,
 		     char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-	int numtowrite,fnum;
+	int numtowrite;
 	int nwritten = -1;
 	int outsize = 0;
 	int startpos;
 	char *data;
 	time_t mtime;
-  
-	fnum = GETFNUM(inbuf,smb_vwv0);
+	files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-	CHECK_FNUM(fnum,conn);
-	CHECK_WRITE(fnum);
-	CHECK_ERROR(fnum);
+	CHECK_FSP(fsp,conn);
+	CHECK_WRITE(fsp);
+	CHECK_ERROR(fsp);
 
 	numtowrite = SVAL(inbuf,smb_vwv1);
 	startpos = IVAL(inbuf,smb_vwv2);
 	mtime = make_unix_date3(inbuf+smb_vwv4);
 	data = smb_buf(inbuf) + 1;
   
-	if (is_locked(fnum,conn,numtowrite,startpos, F_WRLCK))
+	if (is_locked(fsp,conn,numtowrite,startpos, F_WRLCK))
 		return(ERROR(ERRDOS,ERRlock));
       
-	seek_file(fnum,startpos);
+	seek_file(fsp,startpos);
       
-	nwritten = write_file(fnum,data,numtowrite);
+	nwritten = write_file(fsp,data,numtowrite);
 
-	set_filetime(conn, Files[fnum].fsp_name,mtime);
+	set_filetime(conn, fsp->fsp_name,mtime);
   
-	close_file(fnum,True);
+	close_file(fsp,True);
 
 	DEBUG(3,("writeclose fnum=%d num=%d wrote=%d (numopen=%d)\n",
-		 fnum, numtowrite, nwritten,
+		 fsp->fnum, numtowrite, nwritten,
 		 conn->num_files_open));
   
 	if (nwritten <= 0)
@@ -2504,24 +2448,22 @@ int reply_writeclose(connection_struct *conn,
 int reply_lock(connection_struct *conn,
 	       char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-	int fnum;
 	int outsize = set_message(outbuf,0,0,True);
 	uint32 count,offset;
 	int eclass;
 	uint32 ecode;
+	files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-	fnum = GETFNUM(inbuf,smb_vwv0);
-
-	CHECK_FNUM(fnum,conn);
-	CHECK_ERROR(fnum);
+	CHECK_FSP(fsp,conn);
+	CHECK_ERROR(fsp);
 
 	count = IVAL(inbuf,smb_vwv1);
 	offset = IVAL(inbuf,smb_vwv3);
 
 	DEBUG(3,("lock fd=%d fnum=%d ofs=%d cnt=%d\n",
-		 Files[fnum].fd_ptr->fd, fnum, offset, count));
+		 fsp->fd_ptr->fd, fsp->fnum, offset, count));
 
-	if (!do_lock(fnum, conn, count, offset, F_WRLCK, &eclass, &ecode))
+	if (!do_lock(fsp, conn, count, offset, F_WRLCK, &eclass, &ecode))
 		return (ERROR(eclass,ecode));
 
 	return(outsize);
@@ -2533,25 +2475,23 @@ int reply_lock(connection_struct *conn,
 ****************************************************************************/
 int reply_unlock(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int fnum;
   int outsize = set_message(outbuf,0,0,True);
   uint32 count,offset;
   int eclass;
   uint32 ecode;
-  
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_ERROR(fsp);
 
   count = IVAL(inbuf,smb_vwv1);
   offset = IVAL(inbuf,smb_vwv3);
 
-  if(!do_unlock(fnum, conn, count, offset, &eclass, &ecode))
+  if(!do_unlock(fsp, conn, count, offset, &eclass, &ecode))
     return (ERROR(eclass,ecode));
 
   DEBUG( 3, ( "unlock fd=%d fnum=%d ofs=%d cnt=%d\n",
-        Files[fnum].fd_ptr->fd, fnum, offset, count ) );
+        fsp->fd_ptr->fd, fsp->fnum, offset, count ) );
   
   return(outsize);
 }
@@ -2624,7 +2564,6 @@ int reply_printopen(connection_struct *conn,
 {
 	pstring fname;
 	pstring fname2;
-	int fnum = -1;
 	int outsize = 0;
 	files_struct *fsp;
 	
@@ -2649,26 +2588,24 @@ int reply_printopen(connection_struct *conn,
 		slprintf(fname,sizeof(fname)-1, "%s.XXXXXX",s);  
 	}
 
-	fnum = find_free_file();
-	if (fnum < 0)
+	fsp = find_free_file();
+	if (!fsp)
 		return(ERROR(ERRSRV,ERRnofids));
-
-	fsp = &Files[fnum];
 	
 	pstrcpy(fname2,(char *)mktemp(fname));
 
 	if (!check_name(fname2,conn)) {
-		fsp->reserved = False;
+		file_free(fsp);
 		return(ERROR(ERRDOS,ERRnoaccess));
 	}
 
 	/* Open for exclusive use, write only. */
-	open_file_shared(fnum,conn,fname2,
+	open_file_shared(fsp,conn,fname2,
 			 (DENY_ALL<<4)|1, 0x12, unix_mode(conn,0), 
 			 0, NULL, NULL);
 
 	if (!fsp->open) {
-		fsp->reserved = False;
+		file_free(fsp);
 		return(UNIXERROR(ERRDOS,ERRnoaccess));
 	}
 
@@ -2676,10 +2613,10 @@ int reply_printopen(connection_struct *conn,
 	fsp->print_file = True;
   
 	outsize = set_message(outbuf,1,0,True);
-	SSVAL(outbuf,smb_vwv0,fnum);
+	SSVAL(outbuf,smb_vwv0,fsp->fnum);
   
 	DEBUG(3,("openprint %s fd=%d fnum=%d\n",
-		   fname2, fsp->fd_ptr->fd, fnum));
+		   fname2, fsp->fd_ptr->fd, fsp->fnum));
 
 	return(outsize);
 }
@@ -2691,21 +2628,19 @@ int reply_printopen(connection_struct *conn,
 int reply_printclose(connection_struct *conn,
 		     char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-	int fnum;
 	int outsize = set_message(outbuf,0,0,True);
-  
-	fnum = GETFNUM(inbuf,smb_vwv0);
+	files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-	CHECK_FNUM(fnum,conn);
-	CHECK_ERROR(fnum);
+	CHECK_FSP(fsp,conn);
+	CHECK_ERROR(fsp);
 
 	if (!CAN_PRINT(conn))
 		return(ERROR(ERRDOS,ERRnoaccess));
   
 	DEBUG(3,("printclose fd=%d fnum=%d\n",
-		 Files[fnum].fd_ptr->fd,fnum));
+		 fsp->fd_ptr->fd,fsp->fnum));
   
-	close_file(fnum,True);
+	close_file(fsp,True);
 
 	return(outsize);
 }
@@ -2786,26 +2721,25 @@ int reply_printqueue(connection_struct *conn,
 ****************************************************************************/
 int reply_printwrite(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int numtowrite,fnum;
+  int numtowrite;
   int outsize = set_message(outbuf,0,0,True);
   char *data;
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
   
   if (!CAN_PRINT(conn))
     return(ERROR(ERRDOS,ERRnoaccess));
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
+  CHECK_ERROR(fsp);
 
   numtowrite = SVAL(smb_buf(inbuf),1);
   data = smb_buf(inbuf) + 3;
   
-  if (write_file(fnum,data,numtowrite) != numtowrite)
+  if (write_file(fsp,data,numtowrite) != numtowrite)
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   
-  DEBUG( 3, ( "printwrite fnum=%d num=%d\n", fnum, numtowrite ) );
+  DEBUG( 3, ( "printwrite fnum=%d num=%d\n", fsp->fnum, numtowrite ) );
   
   return(outsize);
 }
@@ -3323,7 +3257,7 @@ static BOOL copy_file(char *src,char *dest1,connection_struct *conn, int ofun,
   int Access,action;
   struct stat st;
   int ret=0;
-  int fnum1,fnum2;
+  files_struct *fsp1,*fsp2;
   pstring dest;
   
   pstrcpy(dest,dest1);
@@ -3339,43 +3273,43 @@ static BOOL copy_file(char *src,char *dest1,connection_struct *conn, int ofun,
 
   if (!file_exist(src,&st)) return(False);
 
-  fnum1 = find_free_file();
-  if (fnum1<0) return(False);
-  open_file_shared(fnum1,conn,src,(DENY_NONE<<4),
+  fsp1 = find_free_file();
+  if (!fsp1) return(False);
+  open_file_shared(fsp1,conn,src,(DENY_NONE<<4),
 		   1,0,0,&Access,&action);
 
-  if (!Files[fnum1].open) {
-	  Files[fnum1].reserved = False;
+  if (!fsp1->open) {
+	  fsp1->reserved = False;
 	  return(False);
   }
 
   if (!target_is_directory && count)
     ofun = 1;
 
-  fnum2 = find_free_file();
-  if (fnum2<0) {
-    close_file(fnum1,False);
-    return(False);
+  fsp2 = find_free_file();
+  if (!fsp2) {
+	  close_file(fsp1,False);
+	  return(False);
   }
-  open_file_shared(fnum2,conn,dest,(DENY_NONE<<4)|1,
+  open_file_shared(fsp2,conn,dest,(DENY_NONE<<4)|1,
 		   ofun,st.st_mode,0,&Access,&action);
 
-  if (!Files[fnum2].open) {
-    close_file(fnum1,False);
-    Files[fnum2].reserved = False;
+  if (!fsp2->open) {
+    close_file(fsp1,False);
+    fsp2->reserved = False;
     return(False);
   }
 
   if ((ofun&3) == 1) {
-    lseek(Files[fnum2].fd_ptr->fd,0,SEEK_END);
+    lseek(fsp2->fd_ptr->fd,0,SEEK_END);
   }
   
   if (st.st_size)
-    ret = transfer_file(Files[fnum1].fd_ptr->fd,
-                        Files[fnum2].fd_ptr->fd,st.st_size,NULL,0,0);
+    ret = transfer_file(fsp1->fd_ptr->fd,
+                        fsp2->fd_ptr->fd,st.st_size,NULL,0,0);
 
-  close_file(fnum1,False);
-  close_file(fnum2,False);
+  close_file(fsp1,False);
+  close_file(fsp2,False);
 
   return(ret == st.st_size);
 }
@@ -3556,7 +3490,7 @@ int reply_setdir(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 ****************************************************************************/
 int reply_lockingX(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize)
 {
-  int fnum = GETFNUM(inbuf,smb_vwv2);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv2);
   unsigned char locktype = CVAL(inbuf,smb_vwv3);
 #if 0
   unsigned char oplocklevel = CVAL(inbuf,smb_vwv3+1);
@@ -3570,8 +3504,8 @@ int reply_lockingX(connection_struct *conn, char *inbuf,char *outbuf,int length,
   uint32 ecode=0, dummy2;
   int eclass=0, dummy1;
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_ERROR(fsp);
 
   data = smb_buf(inbuf);
 
@@ -3581,28 +3515,27 @@ int reply_lockingX(connection_struct *conn, char *inbuf,char *outbuf,int length,
   if ((locktype & LOCKING_ANDX_OPLOCK_RELEASE))
   {
     int token;
-    files_struct *fsp = &Files[fnum];
     uint32 dev = fsp->fd_ptr->dev;
     uint32 inode = fsp->fd_ptr->inode;
 
     DEBUG(5,("reply_lockingX: oplock break reply from client for fnum = %d\n",
-              fnum));
+              fsp->fnum));
     /*
      * Make sure we have granted an oplock on this file.
      */
     if(!fsp->granted_oplock)
     {
       DEBUG(0,("reply_lockingX: Error : oplock break from client for fnum = %d and \
-no oplock granted on this file.\n", fnum));
+no oplock granted on this file.\n", fsp->fnum));
       return ERROR(ERRDOS,ERRlock);
     }
 
     /* Remove the oplock flag from the sharemode. */
     lock_share_entry(fsp->conn, dev, inode, &token);
-    if(remove_share_oplock( fnum, token)==False) {
+    if(remove_share_oplock(fsp, token)==False) {
 	    DEBUG(0,("reply_lockingX: failed to remove share oplock for fnum %d, \
 dev = %x, inode = %x\n", 
-		     fnum, dev, inode));
+		     fsp->fnum, dev, inode));
 	    unlock_share_entry(fsp->conn, dev, inode, token);
     } else {
 	    unlock_share_entry(fsp->conn, dev, inode, token);
@@ -3628,7 +3561,7 @@ dev = %x, inode = %x\n",
   for(i = 0; i < (int)num_ulocks; i++) {
     count = IVAL(data,SMB_LKLEN_OFFSET(i));
     offset = IVAL(data,SMB_LKOFF_OFFSET(i));
-    if(!do_unlock(fnum,conn,count,offset,&eclass, &ecode))
+    if(!do_unlock(fsp,conn,count,offset,&eclass, &ecode))
       return ERROR(eclass,ecode);
   }
 
@@ -3642,7 +3575,7 @@ dev = %x, inode = %x\n",
   for(i = 0; i < (int)num_locks; i++) {
     count = IVAL(data,SMB_LKLEN_OFFSET(i)); 
     offset = IVAL(data,SMB_LKOFF_OFFSET(i)); 
-    if(!do_lock(fnum,conn,count,offset, ((locktype & 1) ? F_RDLCK : F_WRLCK),
+    if(!do_lock(fsp,conn,count,offset, ((locktype & 1) ? F_RDLCK : F_WRLCK),
                 &eclass, &ecode))
 #if 0 /* JRATEST - blocking lock code. */
       if((ecode == ERRlock) && (lock_timeout != 0)) {
@@ -3663,7 +3596,7 @@ dev = %x, inode = %x\n",
     for(; i >= 0; i--) {
       count = IVAL(data,SMB_LKLEN_OFFSET(i));  
       offset = IVAL(data,SMB_LKOFF_OFFSET(i)); 
-      do_unlock(fnum,conn,count,offset,&dummy1,&dummy2);
+      do_unlock(fsp,conn,count,offset,&dummy1,&dummy2);
     }
     return ERROR(eclass,ecode);
   }
@@ -3671,9 +3604,9 @@ dev = %x, inode = %x\n",
   set_message(outbuf,2,0,True);
   
   DEBUG( 3, ( "lockingX fnum=%d type=%d num_locks=%d num_ulocks=%d\n",
-	fnum, (unsigned int)locktype, num_locks, num_ulocks ) );
+	fsp->fnum, (unsigned int)locktype, num_locks, num_ulocks ) );
 
-  chain_fnum = fnum;
+  chain_fsp = fsp;
 
   return chain_reply(inbuf,outbuf,length,bufsize);
 }
@@ -3684,7 +3617,6 @@ dev = %x, inode = %x\n",
 ****************************************************************************/
 int reply_readbmpx(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize)
 {
-  int fnum;
   int nread = -1;
   int total_read;
   char *data;
@@ -3693,6 +3625,7 @@ int reply_readbmpx(connection_struct *conn, char *inbuf,char *outbuf,int length,
   int max_per_packet;
   int tcount;
   int pad;
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
   /* this function doesn't seem to work - disable by default */
   if (!lp_readbmpx())
@@ -3700,11 +3633,9 @@ int reply_readbmpx(connection_struct *conn, char *inbuf,char *outbuf,int length,
 
   outsize = set_message(outbuf,8,0,True);
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  CHECK_FNUM(fnum,conn);
-  CHECK_READ(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_READ(fsp);
+  CHECK_ERROR(fsp);
 
   startpos = IVAL(inbuf,smb_vwv1);
   maxcount = SVAL(inbuf,smb_vwv3);
@@ -3719,14 +3650,14 @@ int reply_readbmpx(connection_struct *conn, char *inbuf,char *outbuf,int length,
   tcount = maxcount;
   total_read = 0;
 
-  if (is_locked(fnum,conn,maxcount,startpos, F_RDLCK))
+  if (is_locked(fsp,conn,maxcount,startpos, F_RDLCK))
     return(ERROR(ERRDOS,ERRlock));
 	
   do
     {
       int N = MIN(max_per_packet,tcount-total_read);
   
-      nread = read_file(fnum,data,startpos,N);
+      nread = read_file(fsp,data,startpos,N);
 
       if (nread <= 0) nread = 0;
 
@@ -3755,18 +3686,17 @@ int reply_readbmpx(connection_struct *conn, char *inbuf,char *outbuf,int length,
 ****************************************************************************/
 int reply_writebmpx(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int numtowrite,fnum;
+  int numtowrite;
   int nwritten = -1;
   int outsize = 0;
   uint32 startpos;
   int tcount, write_through, smb_doff;
   char *data;
-  
-  fnum = GETFNUM(inbuf,smb_vwv0);
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
+  CHECK_ERROR(fsp);
 
   tcount = SVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv3);
@@ -3780,14 +3710,14 @@ int reply_writebmpx(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
      not an SMBwritebmpx - set this up now so we don't forget */
   CVAL(outbuf,smb_com) = SMBwritec;
 
-  if (is_locked(fnum,conn,tcount,startpos,F_WRLCK))
+  if (is_locked(fsp,conn,tcount,startpos,F_WRLCK))
     return(ERROR(ERRDOS,ERRlock));
 
-  seek_file(fnum,startpos);
-  nwritten = write_file(fnum,data,numtowrite);
+  seek_file(fsp,startpos);
+  nwritten = write_file(fsp,data,numtowrite);
 
   if(lp_syncalways(SNUM(conn)) || write_through)
-    sync_file(conn,fnum);
+    sync_file(conn,fsp);
   
   if(nwritten < numtowrite)
     return(UNIXERROR(ERRHRD,ERRdiskfull));
@@ -3799,8 +3729,8 @@ int reply_writebmpx(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
   if(tcount > nwritten) 
     {
       write_bmpx_struct *wbms;
-      if(Files[fnum].wbmpx_ptr != NULL)
-	wbms = Files[fnum].wbmpx_ptr; /* Use an existing struct */
+      if(fsp->wbmpx_ptr != NULL)
+	wbms = fsp->wbmpx_ptr; /* Use an existing struct */
       else
 	wbms = (write_bmpx_struct *)malloc(sizeof(write_bmpx_struct));
       if(!wbms)
@@ -3813,7 +3743,7 @@ int reply_writebmpx(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
       wbms->wr_total_written = nwritten;
       wbms->wr_errclass = 0;
       wbms->wr_error = 0;
-      Files[fnum].wbmpx_ptr = wbms;
+      fsp->wbmpx_ptr = wbms;
     }
 
   /* We are returning successfully, set the message type back to
@@ -3825,7 +3755,7 @@ int reply_writebmpx(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
   SSVALS(outbuf,smb_vwv0,-1); /* We don't support smb_remaining */
   
   DEBUG( 3, ( "writebmpx fnum=%d num=%d wrote=%d\n",
-	    fnum, numtowrite, nwritten ) );
+	    fsp->fnum, numtowrite, nwritten ) );
 
   if (write_through && tcount==nwritten) {
     /* we need to send both a primary and a secondary response */
@@ -3847,18 +3777,18 @@ int reply_writebmpx(connection_struct *conn, char *inbuf,char *outbuf, int dum_s
 ****************************************************************************/
 int reply_writebs(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int numtowrite,fnum;
+  int numtowrite;
   int nwritten = -1;
   int outsize = 0;
   int32 startpos;
   int tcount, write_through, smb_doff;
   char *data;
   write_bmpx_struct *wbms;
-  BOOL send_response = False;
-  
-  fnum = GETFNUM(inbuf,smb_vwv0);
-  CHECK_FNUM(fnum,conn);
-  CHECK_WRITE(fnum);
+  BOOL send_response = False; 
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
+
+  CHECK_FSP(fsp,conn);
+  CHECK_WRITE(fsp);
 
   tcount = SVAL(inbuf,smb_vwv1);
   startpos = IVAL(inbuf,smb_vwv2);
@@ -3872,7 +3802,7 @@ int reply_writebs(connection_struct *conn, char *inbuf,char *outbuf, int dum_siz
 
   /* This fd should have an auxiliary struct attached,
      check that it does */
-  wbms = Files[fnum].wbmpx_ptr;
+  wbms = fsp->wbmpx_ptr;
   if(!wbms) return(-1);
 
   /* If write through is set we can return errors, else we must
@@ -3883,18 +3813,18 @@ int reply_writebs(connection_struct *conn, char *inbuf,char *outbuf, int dum_siz
   if(wbms->wr_discard)
     return -1; /* Just discard the packet */
 
-  seek_file(fnum,startpos);
-  nwritten = write_file(fnum,data,numtowrite);
+  seek_file(fsp,startpos);
+  nwritten = write_file(fsp,data,numtowrite);
 
   if(lp_syncalways(SNUM(conn)) || write_through)
-    sync_file(conn,fnum);
+    sync_file(conn,fsp);
   
   if (nwritten < numtowrite)
     {
       if(write_through)	{
 	/* We are returning an error - we can delete the aux struct */
 	if (wbms) free((char *)wbms);
-	Files[fnum].wbmpx_ptr = NULL;
+	fsp->wbmpx_ptr = NULL;
 	return(ERROR(ERRHRD,ERRdiskfull));
       }
       return(CACHE_ERROR(wbms,ERRHRD,ERRdiskfull));
@@ -3912,7 +3842,7 @@ int reply_writebs(connection_struct *conn, char *inbuf,char *outbuf, int dum_siz
       }
 
       free((char *)wbms);
-      Files[fnum].wbmpx_ptr = NULL;
+      fsp->wbmpx_ptr = NULL;
     }
 
   if(send_response)
@@ -3927,16 +3857,14 @@ int reply_writebs(connection_struct *conn, char *inbuf,char *outbuf, int dum_siz
 ****************************************************************************/
 int reply_setattrE(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int fnum;
   struct utimbuf unix_times;
   int outsize = 0;
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
   outsize = set_message(outbuf,0,0,True);
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  CHECK_FNUM(fnum,conn);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_ERROR(fsp);
 
   /* Convert the DOS times into unix times. Ignore create
      time as UNIX can't set this.
@@ -3954,7 +3882,7 @@ int reply_setattrE(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
     /* Ignore request */
     if( DEBUGLVL( 3 ) )
       {
-      dbgtext( "reply_setattrE fnum=%d ", fnum);
+      dbgtext( "reply_setattrE fnum=%d ", fsp->fnum);
       dbgtext( "ignoring zero request - not setting timestamps of 0\n" );
       }
     return(outsize);
@@ -3966,11 +3894,11 @@ int reply_setattrE(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
   }
 
   /* Set the date on this file */
-  if(file_utime(conn, Files[fnum].fsp_name, &unix_times))
+  if(file_utime(conn, fsp->fsp_name, &unix_times))
     return(ERROR(ERRDOS,ERRnoaccess));
   
   DEBUG( 3, ( "reply_setattrE fnum=%d actime=%d modtime=%d\n",
-            fnum, (int)unix_times.actime, (int)unix_times.modtime ) );
+            fsp->fnum, (int)unix_times.actime, (int)unix_times.modtime ) );
 
   return(outsize);
 }
@@ -3981,23 +3909,21 @@ int reply_setattrE(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
 ****************************************************************************/
 int reply_getattrE(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-  int fnum;
   struct stat sbuf;
   int outsize = 0;
   int mode;
+  files_struct *fsp = GETFSP(inbuf,smb_vwv0);
 
   outsize = set_message(outbuf,11,0,True);
 
-  fnum = GETFNUM(inbuf,smb_vwv0);
-
-  CHECK_FNUM(fnum,conn);
-  CHECK_ERROR(fnum);
+  CHECK_FSP(fsp,conn);
+  CHECK_ERROR(fsp);
 
   /* Do an fstat on this file */
-  if(fstat(Files[fnum].fd_ptr->fd, &sbuf))
+  if(fstat(fsp->fd_ptr->fd, &sbuf))
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   
-  mode = dos_mode(conn,Files[fnum].fsp_name,&sbuf);
+  mode = dos_mode(conn,fsp->fsp_name,&sbuf);
   
   /* Convert the times into dos times. Set create
      date to be last modify date as UNIX doesn't save
@@ -4017,7 +3943,7 @@ int reply_getattrE(connection_struct *conn, char *inbuf,char *outbuf, int dum_si
     }
   SSVAL(outbuf,smb_vwv10, mode);
   
-  DEBUG( 3, ( "reply_getattrE fnum=%d\n", fnum));
+  DEBUG( 3, ( "reply_getattrE fnum=%d\n", fsp->fnum));
   
   return(outsize);
 }
diff --git a/source3/smbd/server.c b/source3/smbd/server.c
index ba93ceaa16f..8b656ab2646 100644
--- a/source3/smbd/server.c
+++ b/source3/smbd/server.c
@@ -66,14 +66,6 @@ extern int dcelogin_atmost_once;
 extern DOM_SID global_machine_sid;
 
 static connection_struct Connections[MAX_CONNECTIONS];
-files_struct Files[MAX_FNUMS];
-
-/*
- * Indirection for file fd's. Needed as POSIX locking
- * is based on file/process, not fd/process.
- */
-file_fd_struct FileFd[MAX_OPEN_FILES];
-int max_file_fd_used = 0;
 
 extern int Protocol;
 
@@ -89,8 +81,8 @@ int max_send = BUFFER_SIZE;
  */
 int max_recv = BUFFER_SIZE;
 
-/* a fnum to use when chaining */
-int chain_fnum = -1;
+/* a fsp to use when chaining */
+files_struct *chain_fsp = NULL;
 
 /* number of open connections */
 static int num_connections_open = 0;
@@ -807,7 +799,7 @@ static int fd_attempt_open(char *fname, int flags, int mode)
 Cache a uid_t currently with this file open. This is an optimization only
 used when multiple sessionsetup's have been done to one smbd.
 ****************************************************************************/
-static void fd_add_to_uid_cache(file_fd_struct *fd_ptr, uid_t u)
+void fd_add_to_uid_cache(file_fd_struct *fd_ptr, uid_t u)
 {
   if(fd_ptr->uid_cache_count >= sizeof(fd_ptr->uid_users_cache)/sizeof(uid_t))
     return;
@@ -844,67 +836,6 @@ static BOOL fd_is_in_uid_cache(file_fd_struct *fd_ptr, uid_t u)
   return False;
 }
 
-/****************************************************************************
-fd support routines - attempt to find an already open file by dev
-and inode - increments the ref_count of the returned file_fd_struct *.
-****************************************************************************/
-static file_fd_struct *fd_get_already_open(struct stat *sbuf)
-{
-  int i;
-  file_fd_struct *fd_ptr;
-
-  if(sbuf == 0)
-    return 0;
-
-  for(i = 0; i <= max_file_fd_used; i++) {
-    fd_ptr = &FileFd[i];
-    if((fd_ptr->ref_count > 0) &&
-       (((uint32)sbuf->st_dev) == fd_ptr->dev) &&
-       (((uint32)sbuf->st_ino) == fd_ptr->inode)) {
-      fd_ptr->ref_count++;
-      DEBUG(3,
-       ("Re-used file_fd_struct %d, dev = %x, inode = %x, ref_count = %d\n",
-        i, fd_ptr->dev, fd_ptr->inode, fd_ptr->ref_count));
-      return fd_ptr;
-    }
-  }
-  return 0;
-}
-
-/****************************************************************************
-fd support routines - attempt to find a empty slot in the FileFd array.
-Increments the ref_count of the returned entry.
-****************************************************************************/
-static file_fd_struct *fd_get_new(void)
-{
-  extern struct current_user current_user;
-  int i;
-  file_fd_struct *fd_ptr;
-
-  for(i = 0; i < MAX_OPEN_FILES; i++) {
-    fd_ptr = &FileFd[i];
-    if(fd_ptr->ref_count == 0) {
-      fd_ptr->dev = (uint32)-1;
-      fd_ptr->inode = (uint32)-1;
-      fd_ptr->fd = -1;
-      fd_ptr->fd_readonly = -1;
-      fd_ptr->fd_writeonly = -1;
-      fd_ptr->real_open_flags = -1;
-      fd_ptr->uid_cache_count = 0;
-      fd_add_to_uid_cache(fd_ptr, (uid_t)current_user.uid);
-      fd_ptr->ref_count++;
-      /* Increment max used counter if neccessary, cuts down
-         on search time when re-using */
-      if(i > max_file_fd_used)
-        max_file_fd_used = i;
-      DEBUG(3,("Allocated new file_fd_struct %d, dev = %x, inode = %x\n",
-               i, fd_ptr->dev, fd_ptr->inode));
-      return fd_ptr;
-    }
-  }
-  DEBUG(1,("ERROR! Out of file_fd structures - perhaps increase MAX_OPEN_FILES?\n"));
-  return 0;
-}
 
 /****************************************************************************
 fd support routines - attempt to re-open an already open fd as O_RDWR.
@@ -934,8 +865,7 @@ static int fd_attempt_close(file_fd_struct *fd_ptr)
 {
   extern struct current_user current_user;
 
-  DEBUG(3,("fd_attempt_close on file_fd_struct %d, fd = %d, dev = %x, inode = %x, open_flags = %d, ref_count = %d.\n",
-          fd_ptr - &FileFd[0],
+  DEBUG(3,("fd_attempt_close fd = %d, dev = %x, inode = %x, open_flags = %d, ref_count = %d.\n",
           fd_ptr->fd, fd_ptr->dev, fd_ptr->inode,
           fd_ptr->real_open_flags,
           fd_ptr->ref_count));
@@ -1034,14 +964,13 @@ static BOOL check_access_allowed_for_current_user( char *fname, int accmode )
 /****************************************************************************
 open a file
 ****************************************************************************/
-static void open_file(int fnum,connection_struct *conn,
+static void open_file(files_struct *fsp,connection_struct *conn,
 		      char *fname1,int flags,int mode, struct stat *sbuf)
 {
   extern struct current_user current_user;
   pstring fname;
   struct stat statbuf;
   file_fd_struct *fd_ptr;
-  files_struct *fsp = &Files[fnum];
   int accmode = (flags & (O_RDONLY | O_WRONLY | O_RDWR));
 
   fsp->open = False;
@@ -1296,13 +1225,13 @@ static void open_file(int fnum,connection_struct *conn,
      */
     if (fsp->print_file && lp_postscript(SNUM(conn)) && fsp->can_write) {
 	    DEBUG(3,("Writing postscript line\n"));
-	    write_file(fnum,"%!\n",3);
+	    write_file(fsp,"%!\n",3);
     }
       
-    DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d fnum=%d)\n",
+    DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
 	     *sesssetup_user ? sesssetup_user : conn->user,fname,
 	     BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
-	     conn->num_files_open,fnum));
+	     conn->num_files_open));
 
   }
 
@@ -1325,28 +1254,28 @@ static void open_file(int fnum,connection_struct *conn,
 /*******************************************************************
 sync a file
 ********************************************************************/
-void sync_file(connection_struct *conn, int fnum)
+void sync_file(connection_struct *conn, files_struct *fsp)
 {
 #ifdef HAVE_FSYNC
     if(lp_strict_sync(SNUM(conn)))
-      fsync(Files[fnum].fd_ptr->fd);
+      fsync(fsp->fd_ptr->fd);
 #endif
 }
 
 /****************************************************************************
 run a file if it is a magic script
 ****************************************************************************/
-static void check_magic(int fnum,connection_struct *conn)
+static void check_magic(files_struct *fsp,connection_struct *conn)
 {
   if (!*lp_magicscript(SNUM(conn)))
     return;
 
-  DEBUG(5,("checking magic for %s\n",Files[fnum].fsp_name));
+  DEBUG(5,("checking magic for %s\n",fsp->fsp_name));
 
   {
     char *p;
-    if (!(p = strrchr(Files[fnum].fsp_name,'/')))
-      p = Files[fnum].fsp_name;
+    if (!(p = strrchr(fsp->fsp_name,'/')))
+      p = fsp->fsp_name;
     else
       p++;
 
@@ -1358,7 +1287,7 @@ static void check_magic(int fnum,connection_struct *conn)
     int ret;
     pstring magic_output;
     pstring fname;
-    pstrcpy(fname,Files[fnum].fsp_name);
+    pstrcpy(fname,fsp->fsp_name);
 
     if (*lp_magicoutput(SNUM(conn)))
       pstrcpy(magic_output,lp_magicoutput(SNUM(conn)));
@@ -1379,7 +1308,7 @@ static void close_filestruct(files_struct *fsp)
 {   
 	connection_struct *conn = fsp->conn;
     
-	fsp->reserved = False; 
+	file_free(fsp); 
 	fsp->open = False;
 	fsp->is_directory = False; 
     
@@ -1405,69 +1334,66 @@ static void close_filestruct(files_struct *fsp)
  the closing of the connection. In the latter case printing and
  magic scripts are not run.
 ****************************************************************************/
-void close_file(int fnum, BOOL normal_close)
+void close_file(files_struct *fsp, BOOL normal_close)
 {
-	files_struct *fs_p = &Files[fnum];
-	uint32 dev = fs_p->fd_ptr->dev;
-	uint32 inode = fs_p->fd_ptr->inode;
+	uint32 dev = fsp->fd_ptr->dev;
+	uint32 inode = fsp->fd_ptr->inode;
 	int token;
-	connection_struct *conn = fs_p->conn;
+	connection_struct *conn = fsp->conn;
 
-	close_filestruct(fs_p);
+	close_filestruct(fsp);
 
 #if USE_READ_PREDICTION
-	invalidate_read_prediction(fs_p->fd_ptr->fd);
+	invalidate_read_prediction(fsp->fd_ptr->fd);
 #endif
 
 	if (lp_share_modes(SNUM(conn))) {
 		lock_share_entry(conn, dev, inode, &token);
-		del_share_mode(token, fnum);
+		del_share_mode(token, fsp);
 	}
 
-	fd_attempt_close(fs_p->fd_ptr);
+	fd_attempt_close(fsp->fd_ptr);
 
 	if (lp_share_modes(SNUM(conn)))
 		unlock_share_entry(conn, dev, inode, token);
 
 	/* NT uses smbclose to start a print - weird */
-	if (normal_close && fs_p->print_file)
-		print_file(conn, fs_p);
+	if (normal_close && fsp->print_file)
+		print_file(conn, fsp);
 
 	/* check for magic scripts */
 	if (normal_close) {
-		check_magic(fnum,conn);
+		check_magic(fsp,conn);
 	}
 
-	if(fs_p->granted_oplock == True)
+	if(fsp->granted_oplock == True)
 		global_oplocks_open--;
 
-	fs_p->sent_oplock_break = False;
+	fsp->sent_oplock_break = False;
 
 	DEBUG(2,("%s closed file %s (numopen=%d)\n",
-		 conn->user,fs_p->fsp_name,
+		 conn->user,fsp->fsp_name,
 		 conn->num_files_open));
 
-	if (fs_p->fsp_name) {
-		string_free(&fs_p->fsp_name);
+	if (fsp->fsp_name) {
+		string_free(&fsp->fsp_name);
 	}
 
-	/* we will catch bugs faster by zeroing this structure */
-	memset(fs_p, 0, sizeof(*fs_p));
+	file_free(fsp);
 }
 
 /****************************************************************************
  Close a directory opened by an NT SMB call. 
 ****************************************************************************/
   
-void close_directory(int fnum)
+void close_directory(files_struct *fsp)
 {
-  files_struct *fsp = &Files[fnum];
 
   /* TODO - walk the list of pending
      change notify requests and free
-     any pertaining to this fnum. */
+     any pertaining to this fsp. */
 
-  remove_pending_change_notify_requests_by_fid(fnum);
+  remove_pending_change_notify_requests_by_fid(fsp);
 
   /*
    * Do the code common to files and directories.
@@ -1477,18 +1403,16 @@ void close_directory(int fnum)
   if (fsp->fsp_name)
     string_free(&fsp->fsp_name);
 
-  /* we will catch bugs faster by zeroing this structure */
-  memset(fsp, 0, sizeof(*fsp));
+  file_free(fsp);
 }
 
 /****************************************************************************
  Open a directory from an NT SMB call.
 ****************************************************************************/
-int open_directory(int fnum,connection_struct *conn,
+int open_directory(files_struct *fsp,connection_struct *conn,
 		   char *fname, int smb_ofun, int unixmode, int *action)
 {
 	extern struct current_user current_user;
-	files_struct *fsp = &Files[fnum];
 	struct stat st;
 
 	if (smb_ofun & 0x10) {
@@ -1521,8 +1445,8 @@ int open_directory(int fnum,connection_struct *conn,
 		*action = FILE_WAS_OPENED;
 	}
 	
-	DEBUG(5,("open_directory: opening directory %s, fnum = %d\n",
-		 fname, fnum ));
+	DEBUG(5,("open_directory: opening directory %s\n",
+		 fname));
 
 	/*
 	 * Setup the files_struct for it.
@@ -1745,19 +1669,17 @@ free_and_exit:
   Helper for open_file_shared. 
   Truncate a file after checking locking; close file if locked.
   **************************************************************************/
-static void truncate_unless_locked(int fnum, connection_struct *conn, int token, 
+static void truncate_unless_locked(files_struct *fsp, connection_struct *conn, int token, 
 				   BOOL *share_locked)
 {
-  files_struct *fsp = &Files[fnum];
-
   if (fsp->can_write){
-    if (is_locked(fnum,conn,0x3FFFFFFF,0,F_WRLCK)){
+    if (is_locked(fsp,conn,0x3FFFFFFF,0,F_WRLCK)){
       /* If share modes are in force for this connection we
          have the share entry locked. Unlock it before closing. */
       if (*share_locked && lp_share_modes(SNUM(conn)))
         unlock_share_entry( conn, fsp->fd_ptr->dev, 
                             fsp->fd_ptr->inode, token);
-      close_file(fnum,False);   
+      close_file(fsp,False);   
       /* Share mode no longer locked. */
       *share_locked = False;
       errno = EACCES;
@@ -1813,10 +1735,9 @@ int check_share_mode( share_mode_entry *share, int deny_mode, char *fname,
 /****************************************************************************
 open a file with a share mode
 ****************************************************************************/
-void open_file_shared(int fnum,connection_struct *conn,char *fname,int share_mode,int ofun,
+void open_file_shared(files_struct *fsp,connection_struct *conn,char *fname,int share_mode,int ofun,
 		      int mode,int oplock_request, int *Access,int *action)
 {
-  files_struct *fs_p = &Files[fnum];
   int flags=0;
   int flags2=0;
   int deny_mode = (share_mode>>4)&7;
@@ -1829,8 +1750,8 @@ void open_file_shared(int fnum,connection_struct *conn,char *fname,int share_mod
   uint32 inode = 0;
   int num_share_modes = 0;
 
-  fs_p->open = False;
-  fs_p->fd_ptr = 0;
+  fsp->open = False;
+  fsp->fd_ptr = 0;
 
   /* this is for OS/2 EAs - try and say we don't support them */
   if (strstr(fname,".+,;=[].")) 
@@ -1992,22 +1913,22 @@ dev = %x, inode = %x\n", old_shares[i].op_type, fname, dev, inode));
   DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n",
 	   flags,flags2,mode));
 
-  open_file(fnum,conn,fname,flags|(flags2&~(O_TRUNC)),mode,file_existed ? &sbuf : 0);
-  if (!fs_p->open && flags==O_RDWR && errno!=ENOENT && fcbopen) 
+  open_file(fsp,conn,fname,flags|(flags2&~(O_TRUNC)),mode,file_existed ? &sbuf : 0);
+  if (!fsp->open && flags==O_RDWR && errno!=ENOENT && fcbopen) 
   {
     flags = O_RDONLY;
-    open_file(fnum,conn,fname,flags,mode,file_existed ? &sbuf : 0 );
+    open_file(fsp,conn,fname,flags,mode,file_existed ? &sbuf : 0 );
   }
 
-  if (fs_p->open) 
+  if (fsp->open) 
   {
     int open_mode=0;
 
     if((share_locked == False) && lp_share_modes(SNUM(conn)))
     {
       /* We created the file - thus we must now lock the share entry before creating it. */
-      dev = fs_p->fd_ptr->dev;
-      inode = fs_p->fd_ptr->inode;
+      dev = fsp->fd_ptr->dev;
+      inode = fsp->fd_ptr->inode;
       lock_share_entry(conn, dev, inode, &token);
       share_locked = True;
     }
@@ -2025,7 +1946,7 @@ dev = %x, inode = %x\n", old_shares[i].op_type, fname, dev, inode));
         break;
     }
 
-    fs_p->share_mode = (deny_mode<<4) | open_mode;
+    fsp->share_mode = (deny_mode<<4) | open_mode;
 
     if (Access)
       (*Access) = open_mode;
@@ -2051,8 +1972,8 @@ dev = %x, inode = %x\n", old_shares[i].op_type, fname, dev, inode));
       if(oplock_request && (num_share_modes == 0) && lp_oplocks(SNUM(conn)) && 
 	      !IS_VETO_OPLOCK_PATH(conn,fname))
       {
-        fs_p->granted_oplock = True;
-        fs_p->sent_oplock_break = False;
+        fsp->granted_oplock = True;
+        fsp->sent_oplock_break = False;
         global_oplocks_open++;
         port = oplock_port;
 
@@ -2065,11 +1986,11 @@ dev = %x, inode = %x\n", oplock_request, fname, dev, inode));
         port = 0;
         oplock_request = 0;
       }
-      set_share_mode(token, fnum, port, oplock_request);
+      set_share_mode(token, fsp, port, oplock_request);
     }
 
     if ((flags2&O_TRUNC) && file_existed)
-      truncate_unless_locked(fnum,conn,token,&share_locked);
+      truncate_unless_locked(fsp,conn,token,&share_locked);
   }
 
   if (share_locked && lp_share_modes(SNUM(conn)))
@@ -2079,10 +2000,9 @@ dev = %x, inode = %x\n", oplock_request, fname, dev, inode));
 /****************************************************************************
 seek a file. Try to avoid the seek if possible
 ****************************************************************************/
-int seek_file(int fnum,uint32 pos)
+int seek_file(files_struct *fsp,uint32 pos)
 {
   uint32 offset = 0;
-  files_struct *fsp = &Files[fnum];
 
   if (fsp->print_file && lp_postscript(fsp->conn->service))
     offset = 3;
@@ -2094,10 +2014,9 @@ int seek_file(int fnum,uint32 pos)
 /****************************************************************************
 read from a file
 ****************************************************************************/
-int read_file(int fnum,char *data,uint32 pos,int n)
+int read_file(files_struct *fsp,char *data,uint32 pos,int n)
 {
   int ret=0,readret;
-  files_struct *fsp = &Files[fnum];
 
 #if USE_READ_PREDICTION
   if (!fsp->can_write)
@@ -2129,7 +2048,7 @@ int read_file(int fnum,char *data,uint32 pos,int n)
   if (n <= 0)
     return(ret);
 
-  if (seek_file(fnum,pos) != pos)
+  if (seek_file(fsp,pos) != pos)
     {
       DEBUG(3,("Failed to seek to %d\n",pos));
       return(ret);
@@ -2147,9 +2066,8 @@ int read_file(int fnum,char *data,uint32 pos,int n)
 /****************************************************************************
 write to a file
 ****************************************************************************/
-int write_file(int fnum,char *data,int n)
+int write_file(files_struct *fsp,char *data,int n)
 {
-  files_struct *fsp = &Files[fnum];
 
   if (!fsp->can_write) {
     errno = EPERM;
@@ -2318,16 +2236,16 @@ int find_service(char *service)
 /****************************************************************************
   create an error packet from a cached error.
 ****************************************************************************/
-int cached_error_packet(char *inbuf,char *outbuf,int fnum,int line)
+int cached_error_packet(char *inbuf,char *outbuf,files_struct *fsp,int line)
 {
-  write_bmpx_struct *wbmpx = Files[fnum].wbmpx_ptr;
+  write_bmpx_struct *wbmpx = fsp->wbmpx_ptr;
 
   int32 eclass = wbmpx->wr_errclass;
   int32 err = wbmpx->wr_error;
 
   /* We can now delete the auxiliary struct */
   free((char *)wbmpx);
-  Files[fnum].wbmpx_ptr = NULL;
+  fsp->wbmpx_ptr = NULL;
   return error_packet(inbuf,outbuf,eclass,err,line);
 }
 
@@ -2890,7 +2808,6 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
   char *inbuf = NULL;
   char *outbuf = NULL;
   files_struct *fsp = NULL;
-  int fnum;
   time_t start_time;
   BOOL shutdown_server = False;
   connection_struct *saved_conn;
@@ -2906,18 +2823,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
   /* We need to search the file open table for the
      entry containing this dev and inode, and ensure
      we have an oplock on it. */
-  for( fnum = 0; fnum < MAX_FNUMS; fnum++)
-  {
-    if(OPEN_FNUM(fnum))
-    {
-      if((Files[fnum].fd_ptr->dev == dev) && (Files[fnum].fd_ptr->inode == inode) &&
-         (Files[fnum].open_time.tv_sec == tval->tv_sec) && 
-         (Files[fnum].open_time.tv_usec == tval->tv_usec)) {
-	      fsp = &Files[fnum];
-	      break;
-      }
-    }
-  }
+  fsp = file_find_dit(dev, inode, tval);
 
   if(fsp == NULL)
   {
@@ -2925,7 +2831,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
     if( DEBUGLVL( 0 ) )
       {
       dbgtext( "oplock_break: cannot find open file with " );
-      dbgtext( "dev = %x, inode = %x (fnum = %d) ", dev, inode, fnum );
+      dbgtext( "dev = %x, inode = %x ", dev, inode);
       dbgtext( "allowing break to succeed.\n" );
       }
     return True;
@@ -2944,8 +2850,8 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
   {
     if( DEBUGLVL( 0 ) )
       {
-      dbgtext( "oplock_break: file %s (fnum = %d, ", fsp->fsp_name, fnum );
-      dbgtext( "dev = %x, inode = %x) has no oplock.\n", dev, inode );
+      dbgtext( "oplock_break: file %s ", fsp->fsp_name );
+      dbgtext( "(dev = %x, inode = %x) has no oplock.\n", dev, inode );
       dbgtext( "Allowing break to succeed regardless.\n" );
       }
     return True;
@@ -2957,8 +2863,8 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
     if( DEBUGLVL( 0 ) )
       {
       dbgtext( "oplock_break: ERROR: oplock_break already sent for " );
-      dbgtext( "file %s (fnum = %d, ", fsp->fsp_name, fnum );
-      dbgtext( "dev = %x, inode = %x)\n", dev, inode );
+      dbgtext( "file %s ", fsp->fsp_name);
+      dbgtext( "(dev = %x, inode = %x)\n", dev, inode );
       }
 
     /* We have to fail the open here as we cannot send another oplock break on
@@ -3000,7 +2906,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
   SSVAL(outbuf,smb_uid,0);
   SSVAL(outbuf,smb_mid,0xFFFF);
   SCVAL(outbuf,smb_vwv0,0xFF);
-  SSVAL(outbuf,smb_vwv2,fnum);
+  SSVAL(outbuf,smb_vwv2,fsp->fnum);
   SCVAL(outbuf,smb_vwv3,LOCKING_ANDX_OPLOCK_RELEASE);
   /* Change this when we have level II oplocks. */
   SCVAL(outbuf,smb_vwv3+1,OPLOCKLEVEL_NONE);
@@ -3029,7 +2935,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
   GetWd(saved_dir);
   unbecome_user();
 
-  while(OPEN_FNUM(fnum) && fsp->granted_oplock)
+  while(OPEN_FSP(fsp) && fsp->granted_oplock)
   {
     if(receive_smb(Client,inbuf,OPLOCK_BREAK_TIMEOUT * 1000) == False)
     {
@@ -3048,7 +2954,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
                      OPLOCK_BREAK_TIMEOUT ) );
 
       DEBUGADD( 0, ( "oplock_break failed for file %s ", fsp->fsp_name ) );
-      DEBUGADD( 0, ( "(fnum = %d, dev = %x, inode = %x).\n", fnum, dev, inode));
+      DEBUGADD( 0, ( "(dev = %x, inode = %x).\n", dev, inode));
       shutdown_server = True;
       break;
     }
@@ -3075,7 +2981,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
         dbgtext( "oplock_break: no break received from client " );
         dbgtext( "within %d seconds.\n", OPLOCK_BREAK_TIMEOUT );
         dbgtext( "oplock_break failed for file %s ", fsp->fsp_name );
-        dbgtext( "(fnum = %d, dev = %x, inode = %x).\n", fnum, dev, inode );
+        dbgtext( "(dev = %x, inode = %x).\n", dev, inode );
         }
       shutdown_server = True;
       break;
@@ -3118,7 +3024,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
     exit_server("oplock break failure");
   }
 
-  if(OPEN_FNUM(fnum))
+  if(OPEN_FSP(fsp))
   {
     /* The lockingX reply will have removed the oplock flag 
        from the sharemode. */
@@ -3139,7 +3045,7 @@ BOOL oplock_break(uint32 dev, uint32 inode, struct timeval *tval)
   if( DEBUGLVL( 3 ) )
     {
     dbgtext( "oplock_break: returning success for " );
-    dbgtext( "fnum = %d, dev = %x, inode = %x.\n", fnum, dev, inode );
+    dbgtext( "dev = %x, inode = %x.\n", dev, inode );
     dbgtext( "Current global_oplocks_open = %d\n", global_oplocks_open );
     }
 
@@ -3791,8 +3697,7 @@ connection_struct *make_connection(char *service,char *user,char *password, int
   Used as a last ditch attempt to free a space in the 
   file table when we have run out.
 ****************************************************************************/
-
-static BOOL attempt_close_oplocked_file(files_struct *fsp)
+BOOL attempt_close_oplocked_file(files_struct *fsp)
 {
 
   DEBUG(5,("attempt_close_oplocked_file: checking file %s.\n", fsp->fsp_name));
@@ -3810,75 +3715,6 @@ static BOOL attempt_close_oplocked_file(files_struct *fsp)
   return False;
 }
 
-/****************************************************************************
-  find first available file slot
-****************************************************************************/
-int find_free_file(void )
-{
-	int i;
-	static int first_file;
-
-	/* we want to give out file handles differently on each new
-	   connection because of a common bug in MS clients where they try to
-	   reuse a file descriptor from an earlier smb connection. This code
-	   increases the chance that the errant client will get an error rather
-	   than causing corruption */
-	if (first_file == 0) {
-		first_file = (getpid() ^ (int)time(NULL)) % MAX_FNUMS;
-		if (first_file == 0) first_file = 1;
-	}
-
-	if (first_file >= MAX_FNUMS)
-		first_file = 1;
-
-	for (i=first_file;i<MAX_FNUMS;i++)
-		if (!Files[i].open && !Files[i].reserved) {
-			memset(&Files[i], 0, sizeof(Files[i]));
-			first_file = i+1;
-			Files[i].reserved = True;
-			return(i);
-		}
-
-	/* returning a file handle of 0 is a bad idea - so we start at 1 */
-	for (i=1;i<first_file;i++)
-		if (!Files[i].open && !Files[i].reserved) {
-			memset(&Files[i], 0, sizeof(Files[i]));
-			first_file = i+1;
-			Files[i].reserved = True;
-			return(i);
-		}
-
-        /* 
-         * Before we give up, go through the open files 
-         * and see if there are any files opened with a
-         * batch oplock. If so break the oplock and then
-         * re-use that entry (if it becomes closed).
-         * This may help as NT/95 clients tend to keep
-         * files batch oplocked for quite a long time
-         * after they have finished with them.
-         */
-        for (i=first_file;i<MAX_FNUMS;i++) {
-          if(attempt_close_oplocked_file( &Files[i])) {
-            memset(&Files[i], 0, sizeof(Files[i]));
-            first_file = i+1;
-            Files[i].reserved = True;
-            return(i);
-          }
-        }
-
-        for (i=1;i<MAX_FNUMS;i++) {
-          if(attempt_close_oplocked_file( &Files[i])) {
-            memset(&Files[i], 0, sizeof(Files[i]));
-            first_file = i+1;
-            Files[i].reserved = True;
-            return(i);
-          }
-        }
-
-	DEBUG(1,("ERROR! Out of file structures - perhaps increase MAX_OPEN_FILES?\n"));
-	return(-1);
-}
-
 
 /****************************************************************************
 reply for the core protocol
@@ -4267,23 +4103,6 @@ static int reply_negprot(connection_struct *conn,
 
 
 /****************************************************************************
-close all open files for a connection
-****************************************************************************/
-static void close_open_files(connection_struct *conn)
-{
-  int i;
-  for (i=0;i<MAX_FNUMS;i++)
-    if (Files[i].conn == conn && Files[i].open) {
-      if(Files[i].is_directory)
-        close_directory(i); 
-      else                  
-        close_file(i,False); 
-    }
-}
-
-
-
-/****************************************************************************
 close a cnum
 ****************************************************************************/
 void close_cnum(connection_struct *conn, uint16 vuid)
@@ -4309,7 +4128,7 @@ void close_cnum(connection_struct *conn, uint16 vuid)
 	if (lp_status(SNUM(conn)))
 		yield_connection(conn,"STATUS.",MAXSTATUS);
 
-	close_open_files(conn);
+	file_close_conn(conn);
 	dptr_closecnum(conn);
 
 	/* execute any "postexec = " line */
@@ -4702,7 +4521,7 @@ static int switch_message(int type,char *inbuf,char *outbuf,int size,int bufsize
       }
 
       /* load service specific parameters */
-      if (OPEN_CNUM(conn) && 
+      if (OPEN_CONN(conn) && 
 	  !become_service(conn,(flags & AS_USER)?True:False)) {
         return(ERROR(ERRSRV,ERRaccess));
       }
@@ -4881,7 +4700,7 @@ int construct_reply(char *inbuf,char *outbuf,int size,int bufsize)
   smb_last_time = time(NULL);
 
   chain_size = 0;
-  chain_fnum = -1;
+  chain_fsp = NULL;
   reset_chain_pnum();
 
   if (msg_type != 0)
@@ -5135,23 +4954,7 @@ static void init_structs(void )
       string_init(&Connections[i].origpath,"");
     }
 
-  for (i=0;i<MAX_FNUMS;i++)
-    {
-      Files[i].open = False;
-      string_init(&Files[i].fsp_name,"");
-    }
-
-  for (i=0;i<MAX_OPEN_FILES;i++)
-    {
-      file_fd_struct *fd_ptr = &FileFd[i];
-      fd_ptr->ref_count = 0;
-      fd_ptr->dev = (int32)-1;
-      fd_ptr->inode = (int32)-1;
-      fd_ptr->fd = -1;
-      fd_ptr->fd_readonly = -1;
-      fd_ptr->fd_writeonly = -1;
-      fd_ptr->real_open_flags = -1;
-    }
+  file_init();
 
   /* for RPC pipes */
   init_rpc_pipe_hnd();
@@ -5297,25 +5100,6 @@ static void usage(char *pname)
   DEBUG( 1, ( "smbd version %s started.\n", VERSION ) );
   DEBUGADD( 1, ( "Copyright Andrew Tridgell 1992-1997\n" ) );
 
-#ifdef HAVE_GETRLIMIT
-#ifdef RLIMIT_NOFILE
-  {
-    struct rlimit rlp;
-    getrlimit(RLIMIT_NOFILE, &rlp);
-    /*
-     * Set the fd limit to be MAX_OPEN_FILES + 10 to account for the
-     * extra fd we need to read directories, as well as the log files
-     * and standard handles etc.
-     */
-    rlp.rlim_cur = (MAX_OPEN_FILES+10>rlp.rlim_max)? rlp.rlim_max:MAX_OPEN_FILES+10;
-    setrlimit(RLIMIT_NOFILE, &rlp);
-    getrlimit(RLIMIT_NOFILE, &rlp);
-    DEBUG(3,("Maximum number of open files per session is %d\n",(int)rlp.rlim_cur));
-  }
-#endif
-#endif
-
-  
   DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 	(int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 
diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 992d8cd6165..67db3aeb2a5 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -26,13 +26,13 @@
 
 extern int DEBUGLEVEL;
 extern int Protocol;
-extern files_struct Files[];
 extern BOOL case_sensitive;
 extern int Client;
 extern int oplock_sock;
 extern int smb_read_error;
 extern fstring local_machine;
 extern int global_oplock_break;
+extern files_struct *chain_fsp;
 
 /****************************************************************************
   Send the required number of replies back.
@@ -200,7 +200,6 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf,
   int16 namelen = strlen(pname)+1;
 
   pstring fname;
-  int fnum = -1;
   int unixmode;
   int size=0,fmode=0,mtime=0,rmode;
   int32 inode = 0;
@@ -218,12 +217,10 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf,
 
   unix_convert(fname,conn,0,&bad_path);
     
-  fnum = find_free_file();
-  if (fnum < 0)
+  fsp = find_free_file();
+  if (!fsp)
     return(ERROR(ERRSRV,ERRnofids));
 
-  fsp = &Files[fnum];
-
   if (!check_name(fname,conn))
   {
     if((errno == ENOENT) && bad_path)
@@ -231,13 +228,13 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
   unixmode = unix_mode(conn,open_attr | aARCH);
       
-  open_file_shared(fnum,conn,fname,open_mode,open_ofun,unixmode,
+  open_file_shared(fsp,conn,fname,open_mode,open_ofun,unixmode,
 		   oplock_request, &rmode,&smb_action);
       
   if (!fsp->open)
@@ -247,12 +244,12 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf,
       unix_ERR_class = ERRDOS;
       unix_ERR_code = ERRbadpath;
     }
-    fsp->reserved = False;
+    file_free(fsp);
     return(UNIXERROR(ERRDOS,ERRnoaccess));
   }
 
   if (fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
-    close_file(fnum,False);
+    close_file(fsp,False);
     return(ERROR(ERRDOS,ERRnoaccess));
   }
     
@@ -261,7 +258,7 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf,
   mtime = sbuf.st_mtime;
   inode = sbuf.st_ino;
   if (fmode & aDIR) {
-    close_file(fnum,False);
+    close_file(fsp,False);
     return(ERROR(ERRDOS,ERRnoaccess));
   }
 
@@ -271,7 +268,7 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf,
     return(ERROR(ERRDOS,ERRnomem));
 
   bzero(params,28);
-  SSVAL(params,0,fnum);
+  SSVAL(params,0,fsp->fnum);
   SSVAL(params,2,fmode);
   put_dos_date2(params,4, mtime);
   SIVAL(params,8, size);
@@ -1212,18 +1209,18 @@ static int call_trans2qfilepathinfo(connection_struct *conn,
   BOOL bad_path = False;
 
   if (tran_call == TRANSACT2_QFILEINFO) {
-    int16 fnum = SVALS(params,0);
+    files_struct *fsp = GETFSP(params,0);
     info_level = SVAL(params,2);
 
-    CHECK_FNUM(fnum,conn);
-    CHECK_ERROR(fnum);
+    CHECK_FSP(fsp,conn);
+    CHECK_ERROR(fsp);
 
-    fname = Files[fnum].fsp_name;
-    if (fstat(Files[fnum].fd_ptr->fd,&sbuf) != 0) {
-      DEBUG(3,("fstat of fnum %d failed (%s)\n",fnum, strerror(errno)));
+    fname = fsp->fsp_name;
+    if (fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
+      DEBUG(3,("fstat of fnum %d failed (%s)\n",fsp->fnum, strerror(errno)));
       return(UNIXERROR(ERRDOS,ERRbadfid));
     }
-    pos = lseek(Files[fnum].fd_ptr->fd,0,SEEK_CUR);
+    pos = lseek(fsp->fd_ptr->fd,0,SEEK_CUR);
   } else {
     /* qpathinfo */
     info_level = SVAL(params,0);
@@ -1437,14 +1434,14 @@ static int call_trans2setfilepathinfo(connection_struct *conn,
     return(ERROR(ERRSRV,ERRaccess));
 
   if (tran_call == TRANSACT2_SETFILEINFO) {
-    int16 fnum = SVALS(params,0);
+    files_struct *fsp = GETFSP(params,0);
     info_level = SVAL(params,2);    
 
-    CHECK_FNUM(fnum,conn);
-    CHECK_ERROR(fnum);
+    CHECK_FSP(fsp,conn);
+    CHECK_ERROR(fsp);
 
-    fname = Files[fnum].fsp_name;
-    fd = Files[fnum].fd_ptr->fd;
+    fname = fsp->fsp_name;
+    fd = fsp->fd_ptr->fd;
 
     if(fstat(fd,&st)!=0) {
       DEBUG(3,("fstat of %s failed (%s)\n", fname, strerror(errno)));