CVS commit: src/sys/dev/dkwedge

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Mon May 22 14:59:42 UTC 2023

Modified Files:
        src/sys/dev/dkwedge: dk.c

Log Message:
dk(4): Strengthen dkopen preconditions.

This cannot be called before dkwedge_attach for the same unit
returns, so sc->sc_dev is guaranteed to be set to a nonnull device_t
and the state is guaranteed not to be larval.

And this cannot be called concurrently with dkwedge_detach, or after
dkwedge_detach does vdevgone until another wedge with the same number
is attached (which can't happen until dkwedge_detach completes), so
the state is guaranteed not to be dying or dead.

Hence sc->sc_dev != NULL and sc->sc_state == DKW_STATE_RUNNING.


To generate a diff of this commit:
cvs rdiff -u -r1.166 -r1.167 src/sys/dev/dkwedge/dk.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.