The router device that I'm currently working on has some goofy failover
system where it has two roofs filesystems (UBI) on it's NAND flash.
A special partition has a "upgrade-in-progress" bit that gets set and I
need to flip it back to 0x0 after a successful system bootup. If I
don't, the bootcmd program in u-boot detects the bit, assumes an
upgrade/installation failure, and fails back to the old/previous rootfs.
Currently, this only affects factory installations installed from the
OEM web UI upgrade tool, but I might like to make sysupgraded
installations use it. I am not sure yet if I want to bother supporting it.
Thus, this needs to happen only once after the system has been
upgraded/installed by a factory installation, and optionally a
sysupgrade installation.
So my questions are:
1.) Is there a way to determine if the current boot was from a factory
install vs sysupgrade?
2.) Where is the appropriate place to do a run-once kind of thing? Like
/etc/uci-defaults/ or sysupgrade's restore_config function. This would
be an S99-like task; run at the very end of the boot process once we are
sure the system has booted successfully.
Any examples anyone can point me to of anything similar before I
re-invent something that might already exist?
If this had to run on every single boot, even non-upgrade boots, I could
probably work with that by checking if the upgrade-in-progress bit is
even set, but I figured I would ask if I could do a "run once after
factory install" kind of thing first.
Thanks in advance
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