move where got_sig_term and reload_after_sighup are defined.
[tprouty/samba.git] / source / smbd / process.c
index 0916dc5b7e32a8feaf2a577374ff42306693653d..f2b2a5c15a62eab18db26cbcfd4b76cfa2258c97 100644 (file)
@@ -1,7 +1,5 @@
-#define OLD_NTDOMAIN 1
 /* 
-   Unix SMB/Netbios implementation.
-   Version 1.9.
+   Unix SMB/CIFS implementation.
    process incoming packets - main loop
    Copyright (C) Andrew Tridgell 1992-1998
    
@@ -22,8 +20,6 @@
 
 #include "includes.h"
 
-extern int DEBUGLEVEL;
-
 struct timeval smb_last_time;
 
 static char *InBuffer = NULL;
@@ -45,11 +41,9 @@ int max_recv = BUFFER_SIZE;
 extern int last_message;
 extern int global_oplock_break;
 extern userdom_struct current_user_info;
-extern char *last_inbuf;
-extern char *InBuffer;
-extern char *OutBuffer;
 extern int smb_read_error;
-extern VOLATILE SIG_ATOMIC_T reload_after_sighup;
+SIG_ATOMIC_T reload_after_sighup = 0;
+SIG_ATOMIC_T got_sig_term = 0;
 extern BOOL global_machine_password_needs_changing;
 extern fstring global_myworkgroup;
 extern pstring global_myname;
@@ -88,7 +82,7 @@ static BOOL push_message(ubi_slList *list_head, char *buf, int msg_len)
   if(msg->msg_buf == NULL)
   {
     DEBUG(0,("push_message: malloc fail (2)\n"));
-    free((char *)msg);
+    SAFE_FREE(msg);
     return False;
   }
 
@@ -111,25 +105,32 @@ BOOL push_oplock_pending_smb_message(char *buf, int msg_len)
 }
 
 /****************************************************************************
-do all async processing in here. This includes UDB oplock messages, kernel
-oplock messages, change notify events etc.
+ Do all async processing in here. This includes UDB oplock messages, kernel
+ oplock messages, change notify events etc.
 ****************************************************************************/
-static void async_processing(fd_set *fds, char *buffer, int buffer_len)
+
+static void async_processing(char *buffer, int buffer_len)
 {
+       DEBUG(10,("async_processing: Doing async processing.\n"));
+
        /* check for oplock messages (both UDP and kernel) */
-       if (receive_local_message(fds, buffer, buffer_len, 0)) {
+       if (receive_local_message(buffer, buffer_len, 1)) {
                process_local_message(buffer, buffer_len);
        }
 
+       if (got_sig_term) {
+               exit_server("Caught TERM signal");
+       }
+
        /* check for async change notify events */
        process_pending_change_notify_queue(0);
 
        /* check for sighup processing */
        if (reload_after_sighup) {
-               unbecome_user();
+               change_to_root_user();
                DEBUG(1,("Reloading services after SIGHUP\n"));
                reload_services(False);
-               reload_after_sighup = False;
+               reload_after_sighup = 0;
        }
 }
 
@@ -151,7 +152,7 @@ static void async_processing(fd_set *fds, char *buffer, int buffer_len)
   Returns False on timeout or error.
   Else returns True.
 
-The timeout is in milli seconds
+The timeout is in milliseconds
 ****************************************************************************/
 
 static BOOL receive_message_or_smb(char *buffer, int buffer_len, int timeout)
@@ -181,8 +182,8 @@ static BOOL receive_message_or_smb(char *buffer, int buffer_len, int timeout)
                memcpy(buffer, msg->msg_buf, MIN(buffer_len, msg->msg_len));
   
                /* Free the message we just copied. */
-               free((char *)msg->msg_buf);
-               free((char *)msg);
+               SAFE_FREE(msg->msg_buf);
+               SAFE_FREE(msg);
                
                DEBUG(5,("receive_message_or_smb: returning queued smb message.\n"));
                return True;
@@ -194,20 +195,46 @@ static BOOL receive_message_or_smb(char *buffer, int buffer_len, int timeout)
         */
 
        FD_ZERO(&fds);
+
+       /*
+        * Ensure we process oplock break messages by preference.
+        * We have to do this before the select, after the select
+        * and if the select returns EINTR. This is due to the fact
+        * that the selects called from async_processing can eat an EINTR
+        * caused by a signal (we can't take the break message there).
+        * This is hideously complex - *MUST* be simplified for 3.0 ! JRA.
+        */
+
+       if (oplock_message_waiting(&fds)) {
+               DEBUG(10,("receive_message_or_smb: oplock_message is waiting.\n"));
+               async_processing(buffer, buffer_len);
+               /*
+                * After async processing we must go and do the select again, as
+                * the state of the flag in fds for the server file descriptor is
+                * indeterminate - we may have done I/O on it in the oplock processing. JRA.
+                */
+               goto again;
+       }
+       
        FD_SET(smbd_server_fd(),&fds);
        maxfd = setup_oplock_select_set(&fds);
 
        to.tv_sec = timeout / 1000;
        to.tv_usec = (timeout % 1000) * 1000;
 
-       selrtn = sys_select(MAX(maxfd,smbd_server_fd())+1,&fds,timeout>0?&to:NULL);
+       selrtn = sys_select(MAX(maxfd,smbd_server_fd())+1,&fds,NULL,NULL,timeout>0?&to:NULL);
 
        /* if we get EINTR then maybe we have received an oplock
           signal - treat this as select returning 1. This is ugly, but
           is the best we can do until the oplock code knows more about
           signals */
        if (selrtn == -1 && errno == EINTR) {
-               async_processing(&fds, buffer, buffer_len);
+               async_processing(buffer, buffer_len);
+               /*
+                * After async processing we must go and do the select again, as
+                * the state of the flag in fds for the server file descriptor is
+                * indeterminate - we may have done I/O on it in the oplock processing. JRA.
+                */
                goto again;
        }
 
@@ -224,9 +251,20 @@ static BOOL receive_message_or_smb(char *buffer, int buffer_len, int timeout)
                return False;
        }
 
-       if (!FD_ISSET(smbd_server_fd(),&fds) || selrtn > 1) {
-               async_processing(&fds, buffer, buffer_len);
-               if (!FD_ISSET(smbd_server_fd(),&fds)) goto again;
+       /*
+        * Ensure we process oplock break messages by preference.
+        * This is IMPORTANT ! Otherwise we can starve other processes
+        * sending us an oplock break message. JRA.
+        */
+
+       if (oplock_message_waiting(&fds)) {
+               async_processing(buffer, buffer_len);
+               /*
+                * After async processing we must go and do the select again, as
+                * the state of the flag in fds for the server file descriptor is
+                * indeterminate - we may have done I/O on it in the oplock processing. JRA.
+                */
+               goto again;
        }
        
        return receive_smb(smbd_server_fd(), buffer, 0);
@@ -244,7 +282,7 @@ BOOL receive_next_smb(char *inbuf, int bufsize, int timeout)
        do {
                ret = receive_message_or_smb(inbuf,bufsize,timeout);
                
-               got_keepalive = (ret && (CVAL(inbuf,0) == 0x85));
+               got_keepalive = (ret && (CVAL(inbuf,0) == SMBkeepalive));
        } while (ret && got_keepalive);
 
        return ret;
@@ -260,7 +298,6 @@ BOOL receive_next_smb(char *inbuf, int bufsize, int timeout)
 void respond_to_all_remaining_local_messages(void)
 {
   char buffer[1024];
-  fd_set fds;
 
   /*
    * Assert we have no exclusive open oplocks.
@@ -272,24 +309,13 @@ void respond_to_all_remaining_local_messages(void)
     return;
   }
 
-  /*
-   * Setup the select read fd set.
-   */
-
-  FD_ZERO(&fds);
-  if(!setup_oplock_select_set(&fds))
-    return;
-
   /*
    * Keep doing receive_local_message with a 1 ms timeout until
    * we have no more messages.
    */
-  while(receive_local_message(&fds, buffer, sizeof(buffer), 1)) {
+  while(receive_local_message(buffer, sizeof(buffer), 1)) {
          /* Deal with oplock break requests from other smbd's. */
          process_local_message(buffer, sizeof(buffer));
-
-         FD_ZERO(&fds);
-         (void)setup_oplock_select_set(&fds);
   }
 
   return;
@@ -315,121 +341,277 @@ force write permissions on print services.
    functions. Any message that has a NULL function is unimplemented -
    please feel free to contribute implementations!
 */
-struct smb_message_struct
+const static struct smb_message_struct
 {
-  int code;
-  char *name;
+  const char *name;
   int (*fn)(connection_struct *conn, char *, char *, int, int);
   int flags;
 }
- smb_messages[] = {
-
-    /* CORE PROTOCOL */
-
-   {SMBnegprot,"SMBnegprot",reply_negprot,0},
-   {SMBtcon,"SMBtcon",reply_tcon,0},
-   {SMBtdis,"SMBtdis",reply_tdis,0},
-   {SMBexit,"SMBexit",reply_exit,0},
-   {SMBioctl,"SMBioctl",reply_ioctl,0},
-   {SMBecho,"SMBecho",reply_echo,0},
-   {SMBsesssetupX,"SMBsesssetupX",reply_sesssetup_and_X,0},
-   {SMBtconX,"SMBtconX",reply_tcon_and_X,0},
-   {SMBulogoffX, "SMBulogoffX", reply_ulogoffX, 0}, /* ulogoff doesn't give a valid TID */
-   {SMBgetatr,"SMBgetatr",reply_getatr,AS_USER},
-   {SMBsetatr,"SMBsetatr",reply_setatr,AS_USER | NEED_WRITE},
-   {SMBchkpth,"SMBchkpth",reply_chkpth,AS_USER},
-   {SMBsearch,"SMBsearch",reply_search,AS_USER},
-   {SMBopen,"SMBopen",reply_open,AS_USER | QUEUE_IN_OPLOCK },
-
-   /* note that SMBmknew and SMBcreate are deliberately overloaded */   
-   {SMBcreate,"SMBcreate",reply_mknew,AS_USER},
-   {SMBmknew,"SMBmknew",reply_mknew,AS_USER}, 
-
-   {SMBunlink,"SMBunlink",reply_unlink,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK},
-   {SMBread,"SMBread",reply_read,AS_USER},
-   {SMBwrite,"SMBwrite",reply_write,AS_USER | CAN_IPC },
-   {SMBclose,"SMBclose",reply_close,AS_USER | CAN_IPC },
-   {SMBmkdir,"SMBmkdir",reply_mkdir,AS_USER | NEED_WRITE},
-   {SMBrmdir,"SMBrmdir",reply_rmdir,AS_USER | NEED_WRITE},
-   {SMBdskattr,"SMBdskattr",reply_dskattr,AS_USER},
-   {SMBmv,"SMBmv",reply_mv,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK},
-
-   /* this is a Pathworks specific call, allowing the 
-      changing of the root path */
-   {pSETDIR,"pSETDIR",reply_setdir,AS_USER}, 
-
-   {SMBlseek,"SMBlseek",reply_lseek,AS_USER},
-   {SMBflush,"SMBflush",reply_flush,AS_USER},
-   {SMBctemp,"SMBctemp",reply_ctemp,AS_USER | QUEUE_IN_OPLOCK },
-   {SMBsplopen,"SMBsplopen",reply_printopen,AS_USER | QUEUE_IN_OPLOCK },
-   {SMBsplclose,"SMBsplclose",reply_printclose,AS_USER},
-   {SMBsplretq,"SMBsplretq",reply_printqueue,AS_USER},
-   {SMBsplwr,"SMBsplwr",reply_printwrite,AS_USER},
-   {SMBlock,"SMBlock",reply_lock,AS_USER},
-   {SMBunlock,"SMBunlock",reply_unlock,AS_USER},
-   
-   /* CORE+ PROTOCOL FOLLOWS */
-   
-   {SMBreadbraw,"SMBreadbraw",reply_readbraw,AS_USER},
-   {SMBwritebraw,"SMBwritebraw",reply_writebraw,AS_USER},
-   {SMBwriteclose,"SMBwriteclose",reply_writeclose,AS_USER},
-   {SMBlockread,"SMBlockread",reply_lockread,AS_USER},
-   {SMBwriteunlock,"SMBwriteunlock",reply_writeunlock,AS_USER},
-   
-   /* LANMAN1.0 PROTOCOL FOLLOWS */
-   
-   {SMBreadBmpx,"SMBreadBmpx",reply_readbmpx,AS_USER},
-   {SMBreadBs,"SMBreadBs",NULL,AS_USER},
-   {SMBwriteBmpx,"SMBwriteBmpx",reply_writebmpx,AS_USER},
-   {SMBwriteBs,"SMBwriteBs",reply_writebs,AS_USER},
-   {SMBwritec,"SMBwritec",NULL,AS_USER},
-   {SMBsetattrE,"SMBsetattrE",reply_setattrE,AS_USER | NEED_WRITE },
-   {SMBgetattrE,"SMBgetattrE",reply_getattrE,AS_USER },
-   {SMBtrans,"SMBtrans",reply_trans,AS_USER | CAN_IPC | QUEUE_IN_OPLOCK},
-   {SMBtranss,"SMBtranss",NULL,AS_USER | CAN_IPC},
-   {SMBioctls,"SMBioctls",NULL,AS_USER},
-   {SMBcopy,"SMBcopy",reply_copy,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK },
-   {SMBmove,"SMBmove",NULL,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK },
-   
-   {SMBopenX,"SMBopenX",reply_open_and_X,AS_USER | CAN_IPC | QUEUE_IN_OPLOCK },
-   {SMBreadX,"SMBreadX",reply_read_and_X,AS_USER | CAN_IPC },
-   {SMBwriteX,"SMBwriteX",reply_write_and_X,AS_USER | CAN_IPC },
-   {SMBlockingX,"SMBlockingX",reply_lockingX,AS_USER },
-   
-   {SMBffirst,"SMBffirst",reply_search,AS_USER},
-   {SMBfunique,"SMBfunique",reply_search,AS_USER},
-   {SMBfclose,"SMBfclose",reply_fclose,AS_USER},
-
-   /* LANMAN2.0 PROTOCOL FOLLOWS */
-   {SMBfindnclose, "SMBfindnclose", reply_findnclose, AS_USER},
-   {SMBfindclose, "SMBfindclose", reply_findclose,AS_USER},
-   {SMBtrans2, "SMBtrans2", reply_trans2, AS_USER | QUEUE_IN_OPLOCK | CAN_IPC },
-   {SMBtranss2, "SMBtranss2", reply_transs2, AS_USER},
-
-   /* NT PROTOCOL FOLLOWS */
-   {SMBntcreateX, "SMBntcreateX", reply_ntcreate_and_X, AS_USER | CAN_IPC | QUEUE_IN_OPLOCK },
-   {SMBnttrans, "SMBnttrans", reply_nttrans, AS_USER | CAN_IPC | QUEUE_IN_OPLOCK},
-   {SMBnttranss, "SMBnttranss", reply_nttranss, AS_USER | CAN_IPC },
-   {SMBntcancel, "SMBntcancel", reply_ntcancel, 0 },
-
-   /* messaging routines */
-   {SMBsends,"SMBsends",reply_sends,AS_GUEST},
-   {SMBsendstrt,"SMBsendstrt",reply_sendstrt,AS_GUEST},
-   {SMBsendend,"SMBsendend",reply_sendend,AS_GUEST},
-   {SMBsendtxt,"SMBsendtxt",reply_sendtxt,AS_GUEST},
-
-   /* NON-IMPLEMENTED PARTS OF THE CORE PROTOCOL */
-   
-   {SMBsendb,"SMBsendb",NULL,AS_GUEST},
-   {SMBfwdname,"SMBfwdname",NULL,AS_GUEST},
-   {SMBcancelf,"SMBcancelf",NULL,AS_GUEST},
-   {SMBgetmac,"SMBgetmac",NULL,AS_GUEST}
- };
+ smb_messages[256] = {
+
+/* 0x00 */ { "SMBmkdir",reply_mkdir,AS_USER | NEED_WRITE},
+/* 0x01 */ { "SMBrmdir",reply_rmdir,AS_USER | NEED_WRITE},
+/* 0x02 */ { "SMBopen",reply_open,AS_USER | QUEUE_IN_OPLOCK },
+/* 0x03 */ { "SMBcreate",reply_mknew,AS_USER},
+/* 0x04 */ { "SMBclose",reply_close,AS_USER | CAN_IPC },
+/* 0x05 */ { "SMBflush",reply_flush,AS_USER},
+/* 0x06 */ { "SMBunlink",reply_unlink,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK},
+/* 0x07 */ { "SMBmv",reply_mv,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK},
+/* 0x08 */ { "SMBgetatr",reply_getatr,AS_USER},
+/* 0x09 */ { "SMBsetatr",reply_setatr,AS_USER | NEED_WRITE},
+/* 0x0a */ { "SMBread",reply_read,AS_USER},
+/* 0x0b */ { "SMBwrite",reply_write,AS_USER | CAN_IPC },
+/* 0x0c */ { "SMBlock",reply_lock,AS_USER},
+/* 0x0d */ { "SMBunlock",reply_unlock,AS_USER},
+/* 0x0e */ { "SMBctemp",reply_ctemp,AS_USER | QUEUE_IN_OPLOCK },
+/* 0x0f */ { "SMBmknew",reply_mknew,AS_USER}, 
+/* 0x10 */ { "SMBchkpth",reply_chkpth,AS_USER},
+/* 0x11 */ { "SMBexit",reply_exit,0},
+/* 0x12 */ { "SMBlseek",reply_lseek,AS_USER},
+/* 0x13 */ { "SMBlockread",reply_lockread,AS_USER},
+/* 0x14 */ { "SMBwriteunlock",reply_writeunlock,AS_USER},
+/* 0x15 */ { NULL, NULL, 0 },
+/* 0x16 */ { NULL, NULL, 0 },
+/* 0x17 */ { NULL, NULL, 0 },
+/* 0x18 */ { NULL, NULL, 0 },
+/* 0x19 */ { NULL, NULL, 0 },
+/* 0x1a */ { "SMBreadbraw",reply_readbraw,AS_USER},
+/* 0x1b */ { "SMBreadBmpx",reply_readbmpx,AS_USER},
+/* 0x1c */ { "SMBreadBs",NULL,0 },
+/* 0x1d */ { "SMBwritebraw",reply_writebraw,AS_USER},
+/* 0x1e */ { "SMBwriteBmpx",reply_writebmpx,AS_USER},
+/* 0x1f */ { "SMBwriteBs",reply_writebs,AS_USER},
+/* 0x20 */ { "SMBwritec",NULL,0},
+/* 0x21 */ { NULL, NULL, 0 },
+/* 0x22 */ { "SMBsetattrE",reply_setattrE,AS_USER | NEED_WRITE },
+/* 0x23 */ { "SMBgetattrE",reply_getattrE,AS_USER },
+/* 0x24 */ { "SMBlockingX",reply_lockingX,AS_USER },
+/* 0x25 */ { "SMBtrans",reply_trans,AS_USER | CAN_IPC },
+/* 0x26 */ { "SMBtranss",NULL,AS_USER | CAN_IPC},
+/* 0x27 */ { "SMBioctl",reply_ioctl,0},
+/* 0x28 */ { "SMBioctls",NULL,AS_USER},
+/* 0x29 */ { "SMBcopy",reply_copy,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK },
+/* 0x2a */ { "SMBmove",NULL,AS_USER | NEED_WRITE | QUEUE_IN_OPLOCK },
+/* 0x2b */ { "SMBecho",reply_echo,0},
+/* 0x2c */ { "SMBwriteclose",reply_writeclose,AS_USER},
+/* 0x2d */ { "SMBopenX",reply_open_and_X,AS_USER | CAN_IPC | QUEUE_IN_OPLOCK },
+/* 0x2e */ { "SMBreadX",reply_read_and_X,AS_USER | CAN_IPC },
+/* 0x2f */ { "SMBwriteX",reply_write_and_X,AS_USER | CAN_IPC },
+/* 0x30 */ { NULL, NULL, 0 },
+/* 0x31 */ { NULL, NULL, 0 },
+/* 0x32 */ { "SMBtrans2", reply_trans2, AS_USER | CAN_IPC },
+/* 0x33 */ { "SMBtranss2", reply_transs2, AS_USER},
+/* 0x34 */ { "SMBfindclose", reply_findclose,AS_USER},
+/* 0x35 */ { "SMBfindnclose", reply_findnclose, AS_USER},
+/* 0x36 */ { NULL, NULL, 0 },
+/* 0x37 */ { NULL, NULL, 0 },
+/* 0x38 */ { NULL, NULL, 0 },
+/* 0x39 */ { NULL, NULL, 0 },
+/* 0x3a */ { NULL, NULL, 0 },
+/* 0x3b */ { NULL, NULL, 0 },
+/* 0x3c */ { NULL, NULL, 0 },
+/* 0x3d */ { NULL, NULL, 0 },
+/* 0x3e */ { NULL, NULL, 0 },
+/* 0x3f */ { NULL, NULL, 0 },
+/* 0x40 */ { NULL, NULL, 0 },
+/* 0x41 */ { NULL, NULL, 0 },
+/* 0x42 */ { NULL, NULL, 0 },
+/* 0x43 */ { NULL, NULL, 0 },
+/* 0x44 */ { NULL, NULL, 0 },
+/* 0x45 */ { NULL, NULL, 0 },
+/* 0x46 */ { NULL, NULL, 0 },
+/* 0x47 */ { NULL, NULL, 0 },
+/* 0x48 */ { NULL, NULL, 0 },
+/* 0x49 */ { NULL, NULL, 0 },
+/* 0x4a */ { NULL, NULL, 0 },
+/* 0x4b */ { NULL, NULL, 0 },
+/* 0x4c */ { NULL, NULL, 0 },
+/* 0x4d */ { NULL, NULL, 0 },
+/* 0x4e */ { NULL, NULL, 0 },
+/* 0x4f */ { NULL, NULL, 0 },
+/* 0x50 */ { NULL, NULL, 0 },
+/* 0x51 */ { NULL, NULL, 0 },
+/* 0x52 */ { NULL, NULL, 0 },
+/* 0x53 */ { NULL, NULL, 0 },
+/* 0x54 */ { NULL, NULL, 0 },
+/* 0x55 */ { NULL, NULL, 0 },
+/* 0x56 */ { NULL, NULL, 0 },
+/* 0x57 */ { NULL, NULL, 0 },
+/* 0x58 */ { NULL, NULL, 0 },
+/* 0x59 */ { NULL, NULL, 0 },
+/* 0x5a */ { NULL, NULL, 0 },
+/* 0x5b */ { NULL, NULL, 0 },
+/* 0x5c */ { NULL, NULL, 0 },
+/* 0x5d */ { NULL, NULL, 0 },
+/* 0x5e */ { NULL, NULL, 0 },
+/* 0x5f */ { NULL, NULL, 0 },
+/* 0x60 */ { NULL, NULL, 0 },
+/* 0x61 */ { NULL, NULL, 0 },
+/* 0x62 */ { NULL, NULL, 0 },
+/* 0x63 */ { NULL, NULL, 0 },
+/* 0x64 */ { NULL, NULL, 0 },
+/* 0x65 */ { NULL, NULL, 0 },
+/* 0x66 */ { NULL, NULL, 0 },
+/* 0x67 */ { NULL, NULL, 0 },
+/* 0x68 */ { NULL, NULL, 0 },
+/* 0x69 */ { NULL, NULL, 0 },
+/* 0x6a */ { NULL, NULL, 0 },
+/* 0x6b */ { NULL, NULL, 0 },
+/* 0x6c */ { NULL, NULL, 0 },
+/* 0x6d */ { NULL, NULL, 0 },
+/* 0x6e */ { NULL, NULL, 0 },
+/* 0x6f */ { NULL, NULL, 0 },
+/* 0x70 */ { "SMBtcon",reply_tcon,0},
+/* 0x71 */ { "SMBtdis",reply_tdis,0},
+/* 0x72 */ { "SMBnegprot",reply_negprot,0},
+/* 0x73 */ { "SMBsesssetupX",reply_sesssetup_and_X,0},
+/* 0x74 */ { "SMBulogoffX", reply_ulogoffX, 0}, /* ulogoff doesn't give a valid TID */
+/* 0x75 */ { "SMBtconX",reply_tcon_and_X,0},
+/* 0x76 */ { NULL, NULL, 0 },
+/* 0x77 */ { NULL, NULL, 0 },
+/* 0x78 */ { NULL, NULL, 0 },
+/* 0x79 */ { NULL, NULL, 0 },
+/* 0x7a */ { NULL, NULL, 0 },
+/* 0x7b */ { NULL, NULL, 0 },
+/* 0x7c */ { NULL, NULL, 0 },
+/* 0x7d */ { NULL, NULL, 0 },
+/* 0x7e */ { NULL, NULL, 0 },
+/* 0x7f */ { NULL, NULL, 0 },
+/* 0x80 */ { "SMBdskattr",reply_dskattr,AS_USER},
+/* 0x81 */ { "SMBsearch",reply_search,AS_USER},
+/* 0x82 */ { "SMBffirst",reply_search,AS_USER},
+/* 0x83 */ { "SMBfunique",reply_search,AS_USER},
+/* 0x84 */ { "SMBfclose",reply_fclose,AS_USER},
+/* 0x85 */ { NULL, NULL, 0 },
+/* 0x86 */ { NULL, NULL, 0 },
+/* 0x87 */ { NULL, NULL, 0 },
+/* 0x88 */ { NULL, NULL, 0 },
+/* 0x89 */ { NULL, NULL, 0 },
+/* 0x8a */ { NULL, NULL, 0 },
+/* 0x8b */ { NULL, NULL, 0 },
+/* 0x8c */ { NULL, NULL, 0 },
+/* 0x8d */ { NULL, NULL, 0 },
+/* 0x8e */ { NULL, NULL, 0 },
+/* 0x8f */ { NULL, NULL, 0 },
+/* 0x90 */ { NULL, NULL, 0 },
+/* 0x91 */ { NULL, NULL, 0 },
+/* 0x92 */ { NULL, NULL, 0 },
+/* 0x93 */ { NULL, NULL, 0 },
+/* 0x94 */ { NULL, NULL, 0 },
+/* 0x95 */ { NULL, NULL, 0 },
+/* 0x96 */ { NULL, NULL, 0 },
+/* 0x97 */ { NULL, NULL, 0 },
+/* 0x98 */ { NULL, NULL, 0 },
+/* 0x99 */ { NULL, NULL, 0 },
+/* 0x9a */ { NULL, NULL, 0 },
+/* 0x9b */ { NULL, NULL, 0 },
+/* 0x9c */ { NULL, NULL, 0 },
+/* 0x9d */ { NULL, NULL, 0 },
+/* 0x9e */ { NULL, NULL, 0 },
+/* 0x9f */ { NULL, NULL, 0 },
+/* 0xa0 */ { "SMBnttrans", reply_nttrans, AS_USER | CAN_IPC | QUEUE_IN_OPLOCK},
+/* 0xa1 */ { "SMBnttranss", reply_nttranss, AS_USER | CAN_IPC },
+/* 0xa2 */ { "SMBntcreateX", reply_ntcreate_and_X, AS_USER | CAN_IPC | QUEUE_IN_OPLOCK },
+/* 0xa3 */ { NULL, NULL, 0 },
+/* 0xa4 */ { "SMBntcancel", reply_ntcancel, 0 },
+/* 0xa5 */ { NULL, NULL, 0 },
+/* 0xa6 */ { NULL, NULL, 0 },
+/* 0xa7 */ { NULL, NULL, 0 },
+/* 0xa8 */ { NULL, NULL, 0 },
+/* 0xa9 */ { NULL, NULL, 0 },
+/* 0xaa */ { NULL, NULL, 0 },
+/* 0xab */ { NULL, NULL, 0 },
+/* 0xac */ { NULL, NULL, 0 },
+/* 0xad */ { NULL, NULL, 0 },
+/* 0xae */ { NULL, NULL, 0 },
+/* 0xaf */ { NULL, NULL, 0 },
+/* 0xb0 */ { NULL, NULL, 0 },
+/* 0xb1 */ { NULL, NULL, 0 },
+/* 0xb2 */ { NULL, NULL, 0 },
+/* 0xb3 */ { NULL, NULL, 0 },
+/* 0xb4 */ { NULL, NULL, 0 },
+/* 0xb5 */ { NULL, NULL, 0 },
+/* 0xb6 */ { NULL, NULL, 0 },
+/* 0xb7 */ { NULL, NULL, 0 },
+/* 0xb8 */ { NULL, NULL, 0 },
+/* 0xb9 */ { NULL, NULL, 0 },
+/* 0xba */ { NULL, NULL, 0 },
+/* 0xbb */ { NULL, NULL, 0 },
+/* 0xbc */ { NULL, NULL, 0 },
+/* 0xbd */ { NULL, NULL, 0 },
+/* 0xbe */ { NULL, NULL, 0 },
+/* 0xbf */ { NULL, NULL, 0 },
+/* 0xc0 */ { "SMBsplopen",reply_printopen,AS_USER | QUEUE_IN_OPLOCK },
+/* 0xc1 */ { "SMBsplwr",reply_printwrite,AS_USER},
+/* 0xc2 */ { "SMBsplclose",reply_printclose,AS_USER},
+/* 0xc3 */ { "SMBsplretq",reply_printqueue,AS_USER},
+/* 0xc4 */ { NULL, NULL, 0 },
+/* 0xc5 */ { NULL, NULL, 0 },
+/* 0xc6 */ { NULL, NULL, 0 },
+/* 0xc7 */ { NULL, NULL, 0 },
+/* 0xc8 */ { NULL, NULL, 0 },
+/* 0xc9 */ { NULL, NULL, 0 },
+/* 0xca */ { NULL, NULL, 0 },
+/* 0xcb */ { NULL, NULL, 0 },
+/* 0xcc */ { NULL, NULL, 0 },
+/* 0xcd */ { NULL, NULL, 0 },
+/* 0xce */ { NULL, NULL, 0 },
+/* 0xcf */ { NULL, NULL, 0 },
+/* 0xd0 */ { "SMBsends",reply_sends,AS_GUEST},
+/* 0xd1 */ { "SMBsendb",NULL,AS_GUEST},
+/* 0xd2 */ { "SMBfwdname",NULL,AS_GUEST},
+/* 0xd3 */ { "SMBcancelf",NULL,AS_GUEST},
+/* 0xd4 */ { "SMBgetmac",NULL,AS_GUEST},
+/* 0xd5 */ { "SMBsendstrt",reply_sendstrt,AS_GUEST},
+/* 0xd6 */ { "SMBsendend",reply_sendend,AS_GUEST},
+/* 0xd7 */ { "SMBsendtxt",reply_sendtxt,AS_GUEST},
+/* 0xd8 */ { NULL, NULL, 0 },
+/* 0xd9 */ { NULL, NULL, 0 },
+/* 0xda */ { NULL, NULL, 0 },
+/* 0xdb */ { NULL, NULL, 0 },
+/* 0xdc */ { NULL, NULL, 0 },
+/* 0xdd */ { NULL, NULL, 0 },
+/* 0xde */ { NULL, NULL, 0 },
+/* 0xdf */ { NULL, NULL, 0 },
+/* 0xe0 */ { NULL, NULL, 0 },
+/* 0xe1 */ { NULL, NULL, 0 },
+/* 0xe2 */ { NULL, NULL, 0 },
+/* 0xe3 */ { NULL, NULL, 0 },
+/* 0xe4 */ { NULL, NULL, 0 },
+/* 0xe5 */ { NULL, NULL, 0 },
+/* 0xe6 */ { NULL, NULL, 0 },
+/* 0xe7 */ { NULL, NULL, 0 },
+/* 0xe8 */ { NULL, NULL, 0 },
+/* 0xe9 */ { NULL, NULL, 0 },
+/* 0xea */ { NULL, NULL, 0 },
+/* 0xeb */ { NULL, NULL, 0 },
+/* 0xec */ { NULL, NULL, 0 },
+/* 0xed */ { NULL, NULL, 0 },
+/* 0xee */ { NULL, NULL, 0 },
+/* 0xef */ { NULL, NULL, 0 },
+/* 0xf0 */ { NULL, NULL, 0 },
+/* 0xf1 */ { NULL, NULL, 0 },
+/* 0xf2 */ { NULL, NULL, 0 },
+/* 0xf3 */ { NULL, NULL, 0 },
+/* 0xf4 */ { NULL, NULL, 0 },
+/* 0xf5 */ { NULL, NULL, 0 },
+/* 0xf6 */ { NULL, NULL, 0 },
+/* 0xf7 */ { NULL, NULL, 0 },
+/* 0xf8 */ { NULL, NULL, 0 },
+/* 0xf9 */ { NULL, NULL, 0 },
+/* 0xfa */ { NULL, NULL, 0 },
+/* 0xfb */ { NULL, NULL, 0 },
+/* 0xfc */ { NULL, NULL, 0 },
+/* 0xfd */ { NULL, NULL, 0 },
+/* 0xfe */ { NULL, NULL, 0 },
+/* 0xff */ { NULL, NULL, 0 }
+
+};
 
 /*******************************************************************
 dump a prs to a file
  ********************************************************************/
-static void smb_dump(char *name, int type, char *data, ssize_t len)
+static void smb_dump(const char *name, int type, char *data, ssize_t len)
 {
        int fd, i;
        pstring fname;
@@ -437,13 +619,15 @@ static void smb_dump(char *name, int type, char *data, ssize_t len)
 
        if (len < 4) len = smb_len(data)+4;
        for (i=1;i<100;i++) {
-               slprintf(fname,sizeof(fname), "/tmp/%s.%d.%s", name, i,
+               slprintf(fname,sizeof(fname)-1, "/tmp/%s.%d.%s", name, i,
                                type ? "req" : "resp");
                fd = open(fname, O_WRONLY|O_CREAT|O_EXCL, 0644);
                if (fd != -1 || errno != EEXIST) break;
        }
        if (fd != -1) {
-               write(fd, data, len);
+               ssize_t ret = write(fd, data, len);
+               if (ret != len)
+                       DEBUG(0,("smb_dump: problem: write returned %d\n", (int)ret ));
                close(fd);
                DEBUG(0,("created %s len %d\n", fname, len));
        }
@@ -457,10 +641,9 @@ static int switch_message(int type,char *inbuf,char *outbuf,int size,int bufsize
 {
   static pid_t pid= (pid_t)-1;
   int outsize = 0;
-  static int num_smb_messages = 
-    sizeof(smb_messages) / sizeof(struct smb_message_struct);
-  int match;
-  extern int global_smbpid;
+  extern uint16 global_smbpid;
+
+  type &= 0xff;
 
   if (pid == (pid_t)-1)
     pid = sys_getpid();
@@ -475,15 +658,11 @@ static int switch_message(int type,char *inbuf,char *outbuf,int size,int bufsize
     return(-1);
   }
 
-  for (match=0;match<num_smb_messages;match++)
-    if (smb_messages[match].code == type)
-      break;
-
   /* yuck! this is an interim measure before we get rid of our
      current inbuf/outbuf system */
   global_smbpid = SVAL(inbuf,smb_pid);
 
-  if (match == num_smb_messages)
+  if (smb_messages[type].fn == NULL)
   {
     DEBUG(0,("Unknown message type %d!\n",type));
     smb_dump("Unknown", 1, inbuf, size);
@@ -491,13 +670,17 @@ static int switch_message(int type,char *inbuf,char *outbuf,int size,int bufsize
   }
   else
   {
-    DEBUG(3,("switch message %s (pid %d)\n",smb_messages[match].name,(int)pid));
+    int flags = smb_messages[type].flags;
+    static uint16 last_session_tag = UID_FIELD_INVALID;
+    /* In share mode security we must ignore the vuid. */
+    uint16 session_tag = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : SVAL(inbuf,smb_uid);
+    connection_struct *conn = conn_find(SVAL(inbuf,smb_tid));
+
+    DEBUG(3,("switch message %s (pid %d)\n",smb_fn_name(type),(int)pid));
 
-    smb_dump(smb_messages[match].name, 1, inbuf, size);
+    smb_dump(smb_fn_name(type), 1, inbuf, size);
     if(global_oplock_break)
     {
-      int flags = smb_messages[match].flags;
-
       if(flags & QUEUE_IN_OPLOCK)
       {
         /* 
@@ -511,86 +694,81 @@ static int switch_message(int type,char *inbuf,char *outbuf,int size,int bufsize
         return -1;
       }          
     }
-    if (smb_messages[match].fn)
-    {
-      int flags = smb_messages[match].flags;
-      static uint16 last_session_tag = UID_FIELD_INVALID;
-      /* In share mode security we must ignore the vuid. */
-      uint16 session_tag = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : SVAL(inbuf,smb_uid);
-      connection_struct *conn = conn_find(SVAL(inbuf,smb_tid));
-
-
-      /* Ensure this value is replaced in the incoming packet. */
-      SSVAL(inbuf,smb_uid,session_tag);
-
-      /*
-       * Ensure the correct username is in current_user_info.
-       * This is a really ugly bugfix for problems with
-       * multiple session_setup_and_X's being done and
-       * allowing %U and %G substitutions to work correctly.
-       * There is a reason this code is done here, don't
-       * move it unless you know what you're doing... :-).
-       * JRA.
-       */
-      if (session_tag != last_session_tag) {
-        user_struct *vuser = NULL;
-
-        last_session_tag = session_tag;
-        if(session_tag != UID_FIELD_INVALID)
-          vuser = get_valid_user_struct(session_tag);           
-        if(vuser != NULL)
-          current_user_info = vuser->user;
-      }
-
-      /* does this protocol need to be run as root? */
-      if (!(flags & AS_USER))
-        unbecome_user();
-
-      /* does this protocol need to be run as the connected user? */
-      if ((flags & AS_USER) && !become_user(conn,session_tag)) {
-        if (flags & AS_GUEST) 
-          flags &= ~AS_USER;
-        else
-          return(ERROR(ERRSRV,ERRaccess));
-      }
-      /* this code is to work around a bug is MS client 3 without
-         introducing a security hole - it needs to be able to do
-         print queue checks as guest if it isn't logged in properly */
-      if (flags & AS_USER)
-        flags &= ~AS_GUEST;
-
-      /* does it need write permission? */
-      if ((flags & NEED_WRITE) && !CAN_WRITE(conn))
-        return(ERROR(ERRSRV,ERRaccess));
-
-      /* ipc services are limited */
-      if (IS_IPC(conn) && (flags & AS_USER) && !(flags & CAN_IPC)) {
-        return(ERROR(ERRSRV,ERRaccess));           
-      }
-
-      /* load service specific parameters */
-      if (conn && !become_service(conn,(flags & AS_USER)?True:False)) {
-        return(ERROR(ERRSRV,ERRaccess));
-      }
-
-      /* does this protocol need to be run as guest? */
-      if ((flags & AS_GUEST) && 
-         (!become_guest() || 
-          !check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1)))) {
-        return(ERROR(ERRSRV,ERRaccess));
-      }
-
-      last_inbuf = inbuf;
-
-      outsize = smb_messages[match].fn(conn, inbuf,outbuf,size,bufsize);
+
+    /* Ensure this value is replaced in the incoming packet. */
+    SSVAL(inbuf,smb_uid,session_tag);
+
+    /*
+     * Ensure the correct username is in current_user_info.
+     * This is a really ugly bugfix for problems with
+     * multiple session_setup_and_X's being done and
+     * allowing %U and %G substitutions to work correctly.
+     * There is a reason this code is done here, don't
+     * move it unless you know what you're doing... :-).
+     * JRA.
+     */
+
+    if (session_tag != last_session_tag) {
+      user_struct *vuser = NULL;
+
+      last_session_tag = session_tag;
+      if(session_tag != UID_FIELD_INVALID)
+        vuser = get_valid_user_struct(session_tag);           
+      if(vuser != NULL)
+        current_user_info = vuser->user;
     }
-    else
-    {
-      outsize = reply_unknown(inbuf,outbuf);
+
+    /* does this protocol need to be run as root? */
+    if (!(flags & AS_USER))
+      change_to_root_user();
+
+    /* does this protocol need a valid tree connection? */
+    if ((flags & AS_USER) && !conn) {
+           return ERROR_DOS(ERRSRV, ERRinvnid);
+    }
+
+
+    /* does this protocol need to be run as the connected user? */
+    if ((flags & AS_USER) && !change_to_user(conn,session_tag)) {
+      if (flags & AS_GUEST) 
+        flags &= ~AS_USER;
+      else
+        return(ERROR_DOS(ERRSRV,ERRaccess));
+    }
+
+    /* this code is to work around a bug is MS client 3 without
+       introducing a security hole - it needs to be able to do
+       print queue checks as guest if it isn't logged in properly */
+    if (flags & AS_USER)
+      flags &= ~AS_GUEST;
+
+    /* does it need write permission? */
+    if ((flags & NEED_WRITE) && !CAN_WRITE(conn))
+      return(ERROR_DOS(ERRSRV,ERRaccess));
+
+    /* ipc services are limited */
+    if (IS_IPC(conn) && (flags & AS_USER) && !(flags & CAN_IPC)) {
+      return(ERROR_DOS(ERRSRV,ERRaccess));         
     }
+
+    /* load service specific parameters */
+    if (conn && !set_current_service(conn,(flags & AS_USER)?True:False)) {
+      return(ERROR_DOS(ERRSRV,ERRaccess));
+    }
+
+    /* does this protocol need to be run as guest? */
+    if ((flags & AS_GUEST) && 
+                (!change_to_guest() || 
+               !check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1)))) {
+      return(ERROR_DOS(ERRSRV,ERRaccess));
+    }
+
+    last_inbuf = inbuf;
+
+    outsize = smb_messages[type].fn(conn, inbuf,outbuf,size,bufsize);
   }
 
-  smb_dump(smb_messages[match].name, 0, outbuf, outsize);
+  smb_dump(smb_fn_name(type), 0, outbuf, outsize);
 
   return(outsize);
 }
@@ -625,17 +803,43 @@ static int construct_reply(char *inbuf,char *outbuf,int size,int bufsize)
   return(outsize);
 }
 
+/****************************************************************************
+  Keep track of the number of running smbd's. This functionality is used to
+  'hard' limit Samba overhead on resource constrained systems. 
+****************************************************************************/
+static BOOL smbd_process_limit(void)
+{
+       int32  total_smbds;
+       
+       if (lp_max_smbd_processes()) {
+
+               /* Always add one to the smbd process count, as exit_server() always
+                * subtracts one.
+                */
+
+               total_smbds = 1; /* In case we need to create the entry. */
+
+               if (!conn_tdb_ctx()) {
+                       DEBUG(0,("smbd_process_limit: max smbd processes parameter set with status parameter not \
+set. Ignoring max smbd restriction.\n"));
+                       return False;
+               }
+
+               if (tdb_change_int32_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, 1) == -1)
+                       return True;
+
+               return total_smbds > lp_max_smbd_processes();
+       }
+       else
+               return False;
+}
 
 /****************************************************************************
-  process an smb from the client - split out from the process() code so
+  process an smb from the client - split out from the smbd_process() code so
   it can be used by the oplock break code.
 ****************************************************************************/
 void process_smb(char *inbuf, char *outbuf)
 {
-#ifdef WITH_SSL
-  extern BOOL sslEnabled;     /* don't use function for performance reasons */
-  static int sslConnected = 0;
-#endif /* WITH_SSL */
   static int trans_num;
   int msg_type = CVAL(inbuf,0);
   int32 len = smb_len(inbuf);
@@ -648,13 +852,14 @@ void process_smb(char *inbuf, char *outbuf)
             deny parameters before doing any parsing of the packet
             passed to us by the client.  This prevents attacks on our
             parsing code from hosts not in the hosts allow list */
-         if (!check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1))) {
-                 /* send a negative session response "not listining on calling
+         if (smbd_process_limit() ||
+                 !check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1))) {
+                 /* send a negative session response "not listening on calling
                   name" */
                  static unsigned char buf[5] = {0x83, 0, 0, 1, 0x81};
                  DEBUG( 1, ( "Connection denied from %s\n",
                              client_addr() ) );
-                 send_smb(smbd_server_fd(),(char *)buf);
+                 (void)send_smb(smbd_server_fd(),(char *)buf);
                  exit_server("connection denied");
          }
   }
@@ -662,21 +867,9 @@ void process_smb(char *inbuf, char *outbuf)
   DEBUG( 6, ( "got message type 0x%x of len 0x%x\n", msg_type, len ) );
   DEBUG( 3, ( "Transaction %d of length %d\n", trans_num, nread ) );
 
-#ifdef WITH_SSL
-    if(sslEnabled && !sslConnected){
-        sslConnected = sslutil_negotiate_ssl(smbd_server_fd(), msg_type);
-        if(sslConnected < 0){   /* an error occured */
-            exit_server("SSL negotiation failed");
-        }else if(sslConnected){
-            trans_num++;
-            return;
-        }
-    }
-#endif  /* WITH_SSL */
-
   if (msg_type == 0)
     show_msg(inbuf);
-  else if(msg_type == 0x85)
+  else if(msg_type == SMBkeepalive)
     return; /* Keepalive packet. */
 
   nread = construct_reply(inbuf,outbuf,nread,max_send);
@@ -692,7 +885,8 @@ void process_smb(char *inbuf, char *outbuf)
                  nread, smb_len(outbuf)));
     }
     else
-      send_smb(smbd_server_fd(),outbuf);
+      if (!send_smb(smbd_server_fd(),outbuf))
+        exit_server("process_smb: send_smb failed.");
   }
   trans_num++;
 }
@@ -702,21 +896,14 @@ void process_smb(char *inbuf, char *outbuf)
 /****************************************************************************
 return a string containing the function name of a SMB command
 ****************************************************************************/
-char *smb_fn_name(int type)
+const char *smb_fn_name(int type)
 {
        static char *unknown_name = "SMBunknown";
-       static int num_smb_messages = 
-               sizeof(smb_messages) / sizeof(struct smb_message_struct);
-       int match;
-
-       for (match=0;match<num_smb_messages;match++)
-               if (smb_messages[match].code == type)
-                       break;
 
-       if (match == num_smb_messages)
+       if (smb_messages[type].name == NULL)
                return(unknown_name);
 
-       return(smb_messages[match].name);
+       return(smb_messages[type].name);
 }
 
 
@@ -726,24 +913,25 @@ char *smb_fn_name(int type)
 
 void construct_reply_common(char *inbuf,char *outbuf)
 {
-  memset(outbuf,'\0',smb_size);
-
-  set_message(outbuf,0,0,True);
-  CVAL(outbuf,smb_com) = CVAL(inbuf,smb_com);
-
-  memcpy(outbuf+4,inbuf+4,4);
-  CVAL(outbuf,smb_rcls) = SMB_SUCCESS;
-  CVAL(outbuf,smb_reh) = 0;
-  SCVAL(outbuf,smb_flg, FLAG_REPLY | (CVAL(inbuf,smb_flg) & FLAG_CASELESS_PATHNAMES)); /* bit 7 set
-                                 means a reply */
-  SSVAL(outbuf,smb_flg2,FLAGS2_LONG_PATH_COMPONENTS);
-       /* say we support long filenames */
-
-  SSVAL(outbuf,smb_err,SMB_SUCCESS);
-  SSVAL(outbuf,smb_tid,SVAL(inbuf,smb_tid));
-  SSVAL(outbuf,smb_pid,SVAL(inbuf,smb_pid));
-  SSVAL(outbuf,smb_uid,SVAL(inbuf,smb_uid));
-  SSVAL(outbuf,smb_mid,SVAL(inbuf,smb_mid));
+       memset(outbuf,'\0',smb_size);
+
+       set_message(outbuf,0,0,True);
+       SCVAL(outbuf,smb_com,CVAL(inbuf,smb_com));
+       
+       memcpy(outbuf+4,inbuf+4,4);
+       SCVAL(outbuf,smb_rcls,SMB_SUCCESS);
+       SCVAL(outbuf,smb_reh,0);
+       SCVAL(outbuf,smb_flg, FLAG_REPLY | (CVAL(inbuf,smb_flg) & FLAG_CASELESS_PATHNAMES)); 
+       SSVAL(outbuf,smb_flg2,
+             (SVAL(inbuf,smb_flg2) & FLAGS2_UNICODE_STRINGS) |
+             FLAGS2_LONG_PATH_COMPONENTS |
+             FLAGS2_32_BIT_ERROR_CODES | FLAGS2_EXTENDED_SECURITY);
+
+       SSVAL(outbuf,smb_err,SMB_SUCCESS);
+       SSVAL(outbuf,smb_tid,SVAL(inbuf,smb_tid));
+       SSVAL(outbuf,smb_pid,SVAL(inbuf,smb_pid));
+       SSVAL(outbuf,smb_uid,SVAL(inbuf,smb_uid));
+       SSVAL(outbuf,smb_mid,SVAL(inbuf,smb_mid));
 }
 
 /****************************************************************************
@@ -764,7 +952,7 @@ int chain_reply(char *inbuf,char *outbuf,int size,int bufsize)
 
   /* maybe its not chained */
   if (smb_com2 == 0xFF) {
-    CVAL(outbuf,smb_vwv0) = 0xFF;
+    SCVAL(outbuf,smb_vwv0,0xFF);
     return outsize;
   }
 
@@ -784,7 +972,7 @@ int chain_reply(char *inbuf,char *outbuf,int size,int bufsize)
 
   /* we need to tell the client where the next part of the reply will be */
   SSVAL(outbuf,smb_vwv1,smb_offset(outbuf+outsize,outbuf));
-  CVAL(outbuf,smb_vwv0) = smb_com2;
+  SCVAL(outbuf,smb_vwv0,smb_com2);
 
   /* remember how much the caller added to the chain, only counting stuff
      after the parameter words */
@@ -806,7 +994,7 @@ int chain_reply(char *inbuf,char *outbuf,int size,int bufsize)
   memmove(inbuf2,inbuf,smb_wct);
 
   /* create the in buffer */
-  CVAL(inbuf2,smb_com) = smb_com2;
+  SCVAL(inbuf2,smb_com,smb_com2);
 
   /* create the out buffer */
   construct_reply_common(inbuf2, outbuf2);
@@ -821,7 +1009,7 @@ int chain_reply(char *inbuf,char *outbuf,int size,int bufsize)
   /* copy the new reply and request headers over the old ones, but
      preserve the smb_com field */
   memmove(orig_outbuf,outbuf2,smb_wct);
-  CVAL(orig_outbuf,smb_com) = smb_com1;
+  SCVAL(orig_outbuf,smb_com,smb_com1);
 
   /* restore the saved data, being careful not to overwrite any
    data from the reply header */
@@ -844,13 +1032,8 @@ static int setup_select_timeout(void)
        int select_timeout;
        int t;
 
-       /*
-        * Increase the select timeout back to SMBD_SELECT_TIMEOUT if we
-        * have removed any blocking locks. JRA.
-        */
-
-       select_timeout = blocking_locks_pending() ? SMBD_SELECT_TIMEOUT_WITH_PENDING_LOCKS*1000 :
-               SMBD_SELECT_TIMEOUT*1000;
+       select_timeout = blocking_locks_timeout(SMBD_SELECT_TIMEOUT);
+       select_timeout *= 1000;
 
        t = change_notify_timeout();
        if (t != -1) select_timeout = MIN(select_timeout, t*1000);
@@ -911,7 +1094,7 @@ static BOOL timeout_processing(int deadtime, int *select_timeout, time_t *last_t
     last_idle_closed_check = t;
 
   /* become root again if waiting */
-  unbecome_user();
+  change_to_root_user();
 
   /* check if we need to reload services */
   check_reload(t);
@@ -927,16 +1110,23 @@ static BOOL timeout_processing(int deadtime, int *select_timeout, time_t *last_t
 
   if (keepalive && (t - last_keepalive_sent_time)>keepalive) 
   {
-    struct cli_state *cli = server_client();
-    if (!send_keepalive(smbd_server_fd())) {
-      DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
-      return False;
-    }      
-    /* also send a keepalive to the password server if its still
-       connected */
-    if (cli && cli->initialised)
-      send_keepalive(cli->fd);
-    last_keepalive_sent_time = t;
+         extern struct auth_context *negprot_global_auth_context;
+         if (!send_keepalive(smbd_server_fd())) {
+                 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
+                 return False;
+         }
+         
+         /* send a keepalive for a password server or the like.
+            This is attached to the auth_info created in the
+            negprot */
+         if (negprot_global_auth_context 
+             && negprot_global_auth_context->challenge_set_method 
+             && negprot_global_auth_context->challenge_set_method->send_keepalive) {
+                 negprot_global_auth_context->challenge_set_method->send_keepalive
+                         (&negprot_global_auth_context->challenge_set_method->private_data);
+         }
+
+         last_keepalive_sent_time = t;
   }
 
   /* check for connection timeouts */
@@ -947,7 +1137,10 @@ static BOOL timeout_processing(int deadtime, int *select_timeout, time_t *last_t
     return False;
   }
 
-  if(global_machine_password_needs_changing)
+  if(global_machine_password_needs_changing && 
+     /* for ADS we need to do a regular ADS password change, not a domain
+        password change */
+     lp_security() == SEC_DOMAIN)
   {
     unsigned char trust_passwd_hash[16];
     time_t lct;
@@ -998,9 +1191,10 @@ machine %s in domain %s.\n", global_myname, global_myworkgroup ));
 
   /*
    * Now we are root, check if the log files need pruning.
+   * Force a log file check.
    */
-  if(need_to_check_log_size())
-      check_log_size();
+  force_check_log_size();
+  check_log_size();
 
   /*
    * Modify the select timeout depending upon
@@ -1022,19 +1216,13 @@ void smbd_process(void)
        time_t last_timeout_processing_time = time(NULL);
        unsigned int num_smbs = 0;
 
-       InBuffer = (char *)malloc(BUFFER_SIZE + SAFETY_MARGIN);
-       OutBuffer = (char *)malloc(BUFFER_SIZE + SAFETY_MARGIN);
+       InBuffer = (char *)malloc(BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE + SAFETY_MARGIN);
+       OutBuffer = (char *)malloc(BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE + SAFETY_MARGIN);
        if ((InBuffer == NULL) || (OutBuffer == NULL)) 
                return;
 
-       InBuffer += SMB_ALIGNMENT;
-       OutBuffer += SMB_ALIGNMENT;
-
        max_recv = MIN(lp_maxxmit(),BUFFER_SIZE);
 
-       /* re-initialise the timezone */
-       TimeInit();
-
        while (True) {
                int deadtime = lp_deadtime()*60;
                int select_timeout = setup_select_timeout();
@@ -1047,9 +1235,9 @@ void smbd_process(void)
                
                /* free up temporary memory */
                lp_talloc_free();
-               parse_talloc_free();
+               main_loop_talloc_free();
 
-               while (!receive_message_or_smb(InBuffer,BUFFER_SIZE,select_timeout)) {
+               while (!receive_message_or_smb(InBuffer,BUFFER_SIZE+LARGE_WRITEX_HDR_SIZE,select_timeout)) {
                        if(!timeout_processing( deadtime, &select_timeout, &last_timeout_processing_time))
                                return;
                        num_smbs = 0; /* Reset smb counter. */
@@ -1085,7 +1273,7 @@ void smbd_process(void)
                
                if ((num_smbs % 200) == 0) {
                        time_t new_check_time = time(NULL);
-                       if(last_timeout_processing_time - new_check_time >= (select_timeout/1000)) {
+                       if(new_check_time - last_timeout_processing_time >= (select_timeout/1000)) {
                                if(!timeout_processing( deadtime, &select_timeout, &last_timeout_processing_time))
                                        return;
                                num_smbs = 0; /* Reset smb counter. */
@@ -1094,5 +1282,3 @@ void smbd_process(void)
                }
        }
 }
-
-#undef OLD_NTDOMAIN