initfs: update: add check for image size vs mtd size
The flashcp command will check the file size vs the partition size,
so add a check when looking at images.
Use stat -L -c "%s" to get the file size, and compare it to the mtd
size from the sysfs size attribute.
If this check is suppressed the enforcement is left to flashcp.
Signed-off-by: Milton Miller <miltonm@us.ibm.com>
diff --git a/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh b/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh
index 9d3c812..fa46635 100755
--- a/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh
+++ b/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh
@@ -52,6 +52,14 @@
done
}
+toobig() {
+ if test $(stat -L -c "%s" "$1") -gt $(cat /sys/class/mtd/"$2"/size)
+ then
+ return 0
+ fi
+ return 1
+}
+
findmtd() {
m=$(grep -xl "$1" /sys/class/mtd/*/name)
m=${m%/name}
@@ -89,6 +97,7 @@
dosave=y
dorestore=y
toram=
+checksize=y
checkmount=y
whitelist=/run/initramfs/whitelist
@@ -118,6 +127,9 @@
--no-flash)
doflash=
shift ;;
+ --ignore-size)
+ checksize=
+ shift ;;
--ignore-mount)
checkmount=
doflash=
@@ -165,6 +177,11 @@
echoerr "Unable to find mtd partiton for ${f##*/}."
exit 1
fi
+ if test -n "$checksize" && toobig "$f" "$m"
+ then
+ echoerr "Image ${f##*/} too big for $m."
+ exit 1
+ fi
for s in $m $(childmtds $m)
do
if test -n "$checkmount" && mtdismounted $s