PXELINUX: Add <Ctrl-N> to print the network informationsyslinux-3.50-pre8

Pressing <Ctrl-N> at the boot prompt will output the ipappend strings.

2 files changed, 27 insertions, 3 deletions

diff --git a/NEWS b/NEWS
index 16520ff5..2daecea6 100644
--- a/NEWS
+++ b/NEWS
@@ -24,6 +24,8 @@ Changes in 3.50:
 	  65535*sectors.
 	* vesamenu: fix decoding of palettized PNG images.
 	* Update the Linux kernel boot protocol.
+	* PXELINUX: Press Ctrl-N at the boot prompt to read out the
+	  network info.
 
 Changes in 3.36:
 	* MEMDISK: Disable EDD by default on floppy disks.  EDD can be
diff --git a/ui.inc b/ui.inc
index 400c2d6e..f8f95fd3 100644
--- a/ui.inc
+++ b/ui.inc
@@ -89,6 +89,10 @@ not_ascii:	mov byte [FuncFlag],0
 		je command_done
 		cmp al,'F' & 1Fh		; <Ctrl-F>
 		je set_func_flag
+%if IS_PXELINUX
+		cmp al,'N' & 1Fh		; <Ctrl-N>
+		je show_network_info
+%endif
 		cmp al,'U' & 1Fh		; <Ctrl-U>
 		je kill_command			; Kill input line
 		cmp al,'V' & 1Fh		; <Ctrl-V>
@@ -102,7 +106,8 @@ backspace:	cmp di,command_line		; Make sure there is anything
 		dec di				; Unstore one character
 		mov si,wipe_char		; and erase it from the screen
 		call cwritestr
-		jmp short get_char_2
+get_char_2:
+		jmp short get_char
 
 kill_command:
 		call crlf
@@ -114,8 +119,7 @@ force_text_mode:
 
 set_func_flag:
 		mov byte [FuncFlag],1
-get_char_2:
-		jmp short get_char
+		jmp short get_char_2
 
 ctrl_f_0:	add al,10			; <Ctrl-F>0 == F10
 ctrl_f:		sub al,'1'
@@ -173,6 +177,24 @@ fk_nofile:	pop di
 		jmp short get_char_2
 
 ;
+; Show network info (in the form of the ipappend strings)
+;
+%if IS_PXELINUX
+show_network_info:
+		mov si,IPAppends		; See comboot.doc
+		mov cx,numIPAppends
+.loop:
+		lodsw
+		push si
+		mov si,ax
+		call cwritestr
+		call crlf
+		pop si
+		loop .loop
+		jmp fk_wrcmd
+%endif
+
+;
 ; Jump here to run the default command line
 ;
 auto_boot: