cached state. Otherwise, a subsequent call to devinfo_init() would succeed
without reading the device tree from the kernel thinking that the cached
state was up to date since the generation count was the same. However,
since the cached state was actually free'd, attempts to examine the tree
after the second devinfo_init() would fail.
Reported by: Juho Vuori juho dot vuori at kepa dot fi
Submitted by: Stefan Farfeleder stefan at fafoe dot narf dot at
Approved by: re (dwhite)
MFC after: 1 week
o Added dd_pnpinfo, dd_location, dd_devflags, dd_flags and dd_state
o Copy/initialize these as necessary.
o Document the changes to the interface in devinfo.3.
The devinfo library provides access to the kernel's internal device
hierarchy and to the I/O resource manager. The library uses a
sysctl(9) interface to obtain a snapshot of the kernel's state which
is then made available to the application.
