diff --git a/sys/dev/dev_dce.pas b/sys/dev/dev_dce.pas
index b26d6e32..294ea03a 100644
--- a/sys/dev/dev_dce.pas
+++ b/sys/dev/dev_dce.pas
@@ -610,7 +610,7 @@ begin
 
       if (Result<>0) then Exit;
 
-      Writeln('SetFlipRate:',data^.arg2,' ',data^.arg3);
+      Writeln('SetFlipRate:',data^.arg3);
 
       Exit(0);
      end;
diff --git a/sys/init_sysent.pas b/sys/init_sysent.pas
index 4524c482..c3f7a2b7 100644
--- a/sys/init_sysent.pas
+++ b/sys/init_sysent.pas
@@ -1073,7 +1073,7 @@ var
   ),
   (//[203]
      sy_narg:2;
-     sy_call:nil;
+     sy_call:@sys_mlock;
      sy_name:'sys_mlock'
   ),
   (//[204]
diff --git a/sys/kern/kern_sig.pas b/sys/kern/kern_sig.pas
index 99c574ee..3a4f9f36 100644
--- a/sys/kern/kern_sig.pas
+++ b/sys/kern/kern_sig.pas
@@ -856,12 +856,13 @@ begin
     break;
    end;
    tv:=ets-rts;
+   tv:=tvtohz(tv);
   end else
   begin
    tv:=0;
   end;
 
-  Result:=msleep(@p_sigacts,@p_proc.p_mtx,PPAUSE or PCATCH,'sigwait',tvtohz(tv));
+  Result:=msleep(@p_sigacts,@p_proc.p_mtx,PPAUSE or PCATCH,'sigwait',tv);
 
   if (timeout<>nil) then
   begin
diff --git a/sys/md/vm_pmap.pas b/sys/md/vm_pmap.pas
index ae65d737..33915806 100644
--- a/sys/md/vm_pmap.pas
+++ b/sys/md/vm_pmap.pas
@@ -712,6 +712,12 @@ begin
 
  lock:=pmap_wlock(pmap,start,__end);
 
+ //fixup writeonly
+ if ((prot and VM_PROT_RWX)=VM_PROT_WRITE) then
+ begin
+  prot:=prot or VM_PROT_READ;
+ end;
+
  ppmap_mark_rwx(start,__end,prot);
 
  r:=0;
@@ -988,6 +994,12 @@ begin
 
  lock:=pmap_rlock(pmap,start,__end);
 
+ //fixup writeonly
+ if ((prot and VM_PROT_RWX)=VM_PROT_WRITE) then
+ begin
+  prot:=prot or VM_PROT_READ;
+ end;
+
  ppmap_mark_rwx(start,__end,prot);
 
  case vm_object_type(obj) of
diff --git a/sys/syscalls.pas b/sys/syscalls.pas
index 3bbf4c45..61aa6020 100644
--- a/sys/syscalls.pas
+++ b/sys/syscalls.pas
@@ -101,6 +101,7 @@ function  getrlimit(which:Integer;rlp:Pointer):Integer;
 function  setrlimit(which:Integer;rlp:Pointer):Integer;
 function  _getdirentries(fd:Integer;buf:Pointer;count:DWORD;basep:PInt64):Integer;
 function  __sysctl(name:PInteger;namelen:DWORD;old:Pointer;oldlenp:PQWORD;new:Pointer;newlen:QWORD):Integer;
+function  mlock(addr:Pointer;len:QWORD):Integer;
 function  futimes(fd:Integer;tptr:Pointer):Integer;
 function  getpgid(pid:Integer):Integer;
 function  poll(fds:Pointer;nfds:DWORD;timeout:Integer):Integer;
@@ -924,6 +925,13 @@ asm
  jmp   cerror
 end;
 
+function mlock(addr:Pointer;len:QWORD):Integer; assembler; nostackframe;
+asm
+ movq  $203,%rax
+ call  fast_syscall
+ jmp   cerror
+end;
+
 function futimes(fd:Integer;tptr:Pointer):Integer; assembler; nostackframe;
 asm
  movq  $206,%rax
diff --git a/sys/time.pas b/sys/time.pas
index a6c158f5..92147eb8 100644
--- a/sys/time.pas
+++ b/sys/time.pas
@@ -268,7 +268,13 @@ end;
 
 function tvtohz(time:Int64):Int64;
 begin
- Result:=time;
+ if (time=0) then
+ begin
+  Result:=1;
+ end else
+ begin
+  Result:=time;
+ end;
 end;
 
 procedure usec2timespec(ts:p_timespec;timeo:DWORD);
diff --git a/sys/vfs/vfs_syscalls.pas b/sys/vfs/vfs_syscalls.pas
index f50a62a8..55e0b968 100644
--- a/sys/vfs/vfs_syscalls.pas
+++ b/sys/vfs/vfs_syscalls.pas
@@ -1936,6 +1936,11 @@ var
  sb:t_stat;
  error:Integer;
 begin
+
+ begin
+  Writeln('sys_stat(',path,')');
+ end;
+
  error:=kern_stat(path, UIO_USERSPACE, @sb);
  if (error=0) then
  begin
diff --git a/sys/vm/vm_mmap.pas b/sys/vm/vm_mmap.pas
index 9aafa082..96de0446 100644
--- a/sys/vm/vm_mmap.pas
+++ b/sys/vm/vm_mmap.pas
@@ -20,6 +20,8 @@ type
  end;
  {$IF sizeof(t_query_memory_prot)<>24}{$STOP sizeof(t_query_memory_prot)<>24}{$ENDIF}
 
+ function sys_mlock(addr:Pointer;len:QWORD):Integer;
+
  function sys_mmap(vaddr:Pointer;
                    vlen :QWORD;
                    prot :Integer;
@@ -77,6 +79,37 @@ uses
  sys_conf,
  vm_pager;
 
+function sys_mlock(addr:Pointer;len:QWORD):Integer;
+var
+ _adr,_end,last,start,size:vm_offset_t;
+ map:vm_map_t;
+ error:Integer;
+begin
+ _adr :=vm_offset_t(addr);
+ size :=len;
+ last :=_adr + size;
+ start:=trunc_page(_adr);
+ _end :=round_page(last);
+
+ if (last < _adr) or (_end < _adr) then
+ begin
+  Exit(EINVAL);
+ end;
+
+ map:=p_proc.p_vmspace;
+
+ error:=0;
+ //error:=vm_map_wire(map, start, _end, VM_MAP_WIRE_USER or VM_MAP_WIRE_NOHOLES);
+
+ if (error=KERN_SUCCESS) then
+ begin
+  Result:=0;
+ end else
+ begin
+  Result:=ENOMEM;
+ end;
+end;
+
 function vm_mmap_cdev(objsize     :vm_size_t;
                       prot        :vm_prot_t;
                       maxprotp    :p_vm_prot_t;