[commit] r1100 - trunk/openbios-devel/packages

[repository service]

Author: mcayland
Date: Thu Feb 28 00:06:10 2013
New Revision: 1100
URL: http://tracker.coreboot.org/trac/openbios/changeset/1100

Log:
mac-parts.c: Fix /packages/mac-parts boot when the package arguments are empty.

Commit r1072 removed a couple of NULL pointer checks for package arguments,
however if the arguments are empty in Forth then they are converted back to a
NULL pointer which causes an exception when dereferenced.

Add the checks back in which fixes boot of the debian_lenny_powerpc_small.qcow2
test image with quik once again. Based upon an earlier patch by Alexander Graf
.

Signed-off-by: Mark Cave-Ayland 
CC: Alexander Graf

Modified:
   trunk/openbios-devel/packages/mac-parts.c

Modified: trunk/openbios-devel/packages/mac-parts.c
==============================================================================
--- trunk/openbios-devel/packages/mac-parts.c	Sat Feb 16 13:08:33 2013	(r1099)
+++ trunk/openbios-devel/packages/mac-parts.c	Thu Feb 28 00:06:10 2013	(r1100)
@@ -68,7 +68,7 @@
    	[(id)][,][filespec]
    */
    
-	if ( strlen(str) ) {
+	if ( str && strlen(str) ) {
    	/* Detect the arguments */
    	if ((*str >= '0' && *str <= '9') || (*str == ',')) {
    	    push_str(str);
@@ -126,7 +126,7 @@
     * Implement partition selection as per the PowerPC Microprocessor CHRP bindings
     */

-	if (parnum == 0) {
+	if (str == NULL || parnum == 0) {
    	/* According to the spec, partition 0 as well as no arguments means the whole disk */
    	offs = (long long)0;
    	size = (long long)__be32_to_cpu(dmap.sbBlkCount) * bs;