Hi Sascha and Ashutosh, On Wed, Mar 26, 2014 at 07:26:19AM +0100, Sascha Hauer wrote: > On Wed, Mar 26, 2014 at 11:25:07AM +0530, Ashutosh Singh wrote: > > Dear All, > > > > Can i access the barebox env from linux. > > Once the kernel boot if i want to create a directory and store some parameter > > in default barebox /env folder without going to barebox from kernel. > > For Eg. > > I booted the board i get the linux promt and depending on some condition > > i want to update the barebox env and create a directory in /env so the > > next time > > when barebox is loading the kernel image it can check that directory > > and according > > to that it can select the kernel from any source such as mmc, nand, nor, tftp. > > > > What i observe that after the kernel boot i can see the barebox.env is > > mounted as mtdblock5 (case of Nand) > > now according to my understanding can i mount this partition modify > > with my custom directory > > and again boot so that this directory is available in barebox /env . > > There is no filesystem support for the barebox environment, but you can > access the barebox env under Linux using the bareboxenv tool. Enable > [x] build bareboxenv tool for target > and you'll find the tool under scripts/ > I wrote fast some skript to handle a automatic write of the bareboxenv On env changes. It use inotify to detect changes at the environment. --- snip #!/bin/sh MNT=$1 ENV=$2 bareboxenv -l $MNT $ENV while true do inotifywait -e modify $MNT --excludei ".*.swp" bareboxenv -s $MNT $ENV done --- snap NOTE: Don't use this on nand partitions! This script can be run as daemon on the target and will automatic write the environment back. Usage: "./script $MNTPOINT $BBENV". I hacked this in 10 seconds but it depends if it a mtd device then we should use nandwrite etc... but maybe we can write a proper C implementation, with inotify, mtd ioctl calls (if mtd), etc... I mean this would be very easy to implemented. :-) - Alex _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
