This is the first patch to move the console code out of Xend and into a
separate daemon. In this patch I've included the daemon and a
front-end. I've also have the console code removed from Xend locally
but I wanted to clarify a few things first before submitting that.

Here's how it works:

1) Daemon sits on control channel (via xcs) waiting for console messages
2) Buffers all console data received
3) Publishes the location of a tty that can be used for reading in
/console/<domid>/tty
4) Reads a value from the store to determine what the limit of console
data should be (/console/<domid>/limit) to prevent DoS attacks

Using it is quite simple, just run consoled and use the xc_console
program to connect to the console. It uses syslog for logging.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

     1.1 --- a/tools/Makefile	Tue Aug 02 11:35:45 2005 +0000
     1.2 +++ b/tools/Makefile	Tue Aug 02 12:18:15 2005 +0000
     1.3 @@ -13,6 +13,7 @@ SUBDIRS += xcutils
     1.4  #SUBDIRS += pygrub
     1.5  SUBDIRS += firmware
     1.6  SUBDIRS += security
     1.7 +SUBDIRS += consoled
     1.8  
     1.9  .PHONY: all install clean check check_clean ioemu eioemuinstall ioemuclean
    1.10  

     2.1 --- a/tools/Rules.mk	Tue Aug 02 11:35:45 2005 +0000
     2.2 +++ b/tools/Rules.mk	Tue Aug 02 12:18:15 2005 +0000
     2.3 @@ -4,6 +4,8 @@ include $(XEN_ROOT)/Config.mk
     2.4  
     2.5  XEN_XC             = $(XEN_ROOT)/tools/python/xen/lowlevel/xc
     2.6  XEN_LIBXC          = $(XEN_ROOT)/tools/libxc
     2.7 +XEN_XCS            = $(XEN_ROOT)/tools/xcs
     2.8 +XEN_XENSTORE       = $(XEN_ROOT)/tools/xenstore
     2.9  
    2.10  ifeq ($(XEN_TARGET_ARCH),x86_32)
    2.11  CFLAGS  += -m32 -march=i686