hoffmeis: Preparations for syslog support (LOGSERVER in DHCP, linewise

output buffering defintions and the like)

src/core/config.c

 REQUIRE_OBJECT ( pc_kbd );
 #endif
 
+#ifdef CONSOLE_SYSLOG
+REQUIRE_OBJECT ( syslog );
+#endif
+
 /*
  * Drag in all requested protocols
  *

src/include/console.h

 struct console_driver {
 	/** Console is disabled.
 	 *
-	 * The console's putchar(), getchar() and iskey() methods will
-	 * not be called while #disabled==1.  Typically the
+	 * The console's putchar(), putline(), getchar() and iskey()
+	 * methods will not be called while #disabled==1. Typically the
 	 * console's initialisation functions (called via INIT_FN())
 	 * will set #disabled=0 upon completion.
 	 *
 	 */
 	void ( *putchar ) ( int character );
 
+	/** Write an entire line to the console.
+	 * This is intended to be used by line-oriented output media,
+	 * like system logging facilities or line printers.
+	 * Line output will not contain non-printable characters.
+	 *
+	 * @v linebuffer	Pointer to the \0-terminated line
+	 * @ret None		-
+	 * @err None		-
+	 */
+	void ( * putline ) ( unsigned char * linebuffer );
+
 	/** Read a character from the console.
 	 *
 	 * @v None		-

src/include/gpxe/dhcp.h

 /** DNS servers */
 #define DHCP_DNS_SERVERS 6
 
+/** Syslog servers */
+#define DHCP_LOG_SERVERS 7
+
 /** Host name */
 #define DHCP_HOST_NAME 12
 

src/net/udp/dhcp.c

 	DHCP_VENDOR_CLASS_ID,
 	DHCP_STRING (  'E', 't', 'h', 'e', 'r', 'b', 'o', 'o', 't' ),
 	DHCP_PARAMETER_REQUEST_LIST,
-	DHCP_OPTION ( DHCP_SUBNET_MASK, DHCP_ROUTERS, DHCP_DNS_SERVERS,
+	DHCP_OPTION ( DHCP_SUBNET_MASK, DHCP_ROUTERS, DHCP_DNS_SERVERS, DHCP_LOG_SERVERS,
 		      DHCP_HOST_NAME, DHCP_DOMAIN_NAME, DHCP_ROOT_PATH,
 		      DHCP_VENDOR_ENCAP, DHCP_TFTP_SERVER_NAME,
 		      DHCP_BOOTFILE_NAME, DHCP_EB_ENCAP,

src/usr/dhcpmgmt.c

 /* Avoid dragging in dns.o */
 struct in_addr nameserver;
 
+/* Avoid dragging in syslog.o */
+struct in_addr syslogserver;
+
 /**
  * Configure network device via DHCP
  *
 	/* Retrieve other DHCP options that we care about */
 	find_dhcp_ipv4_option ( dhcp_options, DHCP_DNS_SERVERS,
 				&nameserver );
+	find_dhcp_ipv4_option ( dhcp_options, DHCP_LOG_SERVERS,
+				&syslogserver );
 
 	return 0;
 }