> You could specify with dev_register() that when a device/inode is opened,
> the ownership should be set to the process that opened it "first". When
> the device is closed for the last time (before someone else uses the
> pty at a later time), the ownership reverts back to the default.
Yes, you could do this in the devfs layer. But you could also add
"last close" hooks to the existing code.
> BTW: These automatic ownership changes wouldn't be preserved across
> reboots via the boot/shutdown mechanism.
What about this use case:
user opens device
hourly cron job snapshots owners and modes in /dev
system crashes
system reboots
init-job restores owners and modes in /dev
Michael Chastain
<mailto:mec@shout.net>
"love without fear"