Dan McDonald wrote:
Is there an example in the current source where a kernel thread calls up into a
user-space program? I thought doors allowed this, but I'm not 100% sure.
Examples are always nice. :)
I ask because it might be possible to make the current IPsec/Key-Management
interface (the PF_KEY socket) be quicker, or better exploit a multithreaded key
management application.
The function you are looking for is 'door_ki_upcall()'.
You can see an example of the kernel usage of this in the crypto
framework kcf module:
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/crypto/core/kcf.c#238
In this case the file descriptor is passed to the kernel over
/dev/cryptoadm in an ioctl.
The userland daemon kcfd that services this call is in
usr/closed/cmd/cmd-crypto/kcfd/kcfd.c.
--
Darren J Moffat
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