mount rootfs readonly to prevent CRC errors after hard resets

The script wrfs_mnt can be used for remounting rootfs to update the configuration of the switch.

mount rootfs readonly to prevent CRC errors after hard resets
The script wrfs_mnt can be used for remounting rootfs to update the configuration of the switch.
7985740c · Grzegorz Daniluk · 5b6848ab · 7985740c · 7985740c · 7985740c
Commit 7985740c authored Jul 09, 2013 by Grzegorz Daniluk
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Showing with 19 additions and 2 deletions

boot-nand patches/barebox/env/bin/boot-nand +1 -1

inittab userspace/rootfs_override/etc/inittab +1 -1

wrfs_mnt.sh userspace/rootfs_override/wr/bin/wrfs_mnt.sh +17 -0

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--- a/patches/barebox/env/bin/boot-nand
+++ b/patches/barebox/env/bin/boot-nand
@@ -3,7 +3,7 @@
 # boot kernel from bad block aware partition
 cp /dev/nand0.kernel.bb /dev/mem.kernel
 bootargs="console=ttyS0,115200 panic=10 mem=64M"
-bootargs="$bootargs root=/dev/mtdblock1 rootfstype=jffs2"
+bootargs="$bootargs root=/dev/mtdblock1 rootfstype=jffs2 ro"
 bootargs="$bootargs wr_nic.macaddr=$macaddr"
 bootz /dev/mem.kernel


--- a/userspace/rootfs_override/etc/inittab
+++ b/userspace/rootfs_override/etc/inittab
@@ -15,7 +15,7 @@

 # Startup the system
 ::sysinit:/bin/mount -t proc proc /proc
-::sysinit:/bin/mount -o remount,rw / # REMOUNT_ROOTFS_RW
+#::sysinit:/bin/mount -o remount,rw / # REMOUNT_ROOTFS_RW
 ::sysinit:/bin/mkdir -p /dev/pts
 ::sysinit:/bin/mkdir -p /dev/shm
 ::sysinit:/bin/mount -a

--- a/userspace/rootfs_override/wr/bin/wrfs_mnt.sh
+++ b/userspace/rootfs_override/wr/bin/wrfs_mnt.sh
+#!/bin/ash
+
+if [ ! $# -eq 1 ]; then
+	echo "ro/rw paremeter needed"
+	exit 0
+fi
+
+if [ $1 = "rw" ]; then
+	echo "Remounting rootfs read/write"
+	mount -o remount,rw,sync /
+fi
+
+if [ $1 = "ro" ]; then
+	echo "Remounting rootfs read-only"
+	sync
+	mount -o remount,ro,async /
+fi