belonged. Remove com_activate().
Consolidate information about the console on com(4) in a new struct
comcons_info.
Support detachment & re-attachment of a system console on com(4).
Re-attachment is somehow incomplete. Ideally, if some other device
could take over as console, it would, but we're not quite there,
yet.
children will not detach, the instance is not left in an inconsistent
state.
If uhub(4) port is disconnected, forcefully detach the children on
that port.
Simplify detachment hooks. (sc_dying must die!)
Pass along and respect detachment flags, esp. DETACH_FORCE,
throughout.
the system into config_deactivate(dev): deactivate dev and all of
its descendants. Block all interrupts while calling each device's
activation hook, ca_activate. Now it is possible to simplify or
to delete several device-activation hooks throughout the system.
Do not deactivate a driver while detaching it! If the driver was
already deactivated (because of accidental/emergency removal), let
the driver cope with the knowledge that DVF_ACTIVE has been cleared.
Otherwise, let the driver access the underlying hardware (so that
it can flush caches, restore original register settings, et cetera)
until it exits its device-detachment hook.
Let multiple readers and writers simultaneously access the system's
device_t list, alldevs, from either interrupt or thread context:
postpone changing alldevs linkages and freeing autoconf device
structures until a garbage-collection phase that runs after all
readers & writers have left the list.
Give device iterators (deviter(9)) a consistent view of alldevs no
matter whether device_t's are added and deleted during iteration:
keep a global alldevs generation number. When an iterator enters
alldevs, record the current generation number in the iterator and
increase the global number. When a device_t is created, label it
with the current global generation number. When a device_t is
deleted, add a second label, the current global generation number.
During iteration, compare a device_t's added- and deleted-generation
with the iterator's generation and skip a device_t that was deleted
before the iterator entered the list or added after the iterator
entered the list.
The alldevs generation number is never 0. The garbage collector
reaps device_t's whose delete-generation number is non-zero.
Make alldevs private to sys/kern/subr_autoconf.c. Use deviter(9)
to access it.
SSP for building the whole source tree. Set this to "yes" for
NetBSD/amd64 and NetBSD/i386. It is now possible to get the old
behavior (build libs and certain programs with SSP) by setting
"USE_SSP_DEFAULT" to "no".
and use the appropriate types instead. Tested under NetBSD 5.99.22
and Darwin 10.2.0.
This should fix one of the cross-builds under FreeBSD as reported by
Rhialto on the "current-users" mailing list.
Many drivers set the UDP/TCP v4 flags even for v6 traffic and if the
packet is encapsulated with gif, the IPv6 header would get corrupted by
ip_output. Patch suggested by bad@
We cannot user_from_uid(3) or group_from_gid(3) unless the system
also supports pwcache_userdb(3) and pwcache_groupdb(3). The build will
use the hosts password and user database otherwise. Switch back to the
old behaviour to only the native functions if they are all present.
This fixes cross builds under Mac OS X and FreeBSD.
Fix based on problem analysis provided by Akihiko Hayashi.
