minix/servers/vfs
Cristiano Giuffrida 48c6bb79f4 Driver refactory for live update and crash recovery.
SYSLIB CHANGES:
- DS calls to publish / retrieve labels consider endpoints instead of u32_t.

VFS CHANGES:
- mapdriver() only adds an entry in the dmap table in VFS.
- dev_up() is only executed upon reception of a driver up event.

INET CHANGES:
- INET no longer searches for existing drivers instances at startup.
- A newtwork driver is (re)initialized upon reception of a driver up event.
- Networking startup is now race-free by design. No need to waste 5 seconds
at startup any more.

DRIVER CHANGES:
- Every driver publishes driver up events when starting for the first time or
in case of restart when recovery actions must be taken in the upper layers.
- Driver up events are published by drivers through DS. 
- For regular drivers, VFS is normally the only subscriber, but not necessarily.
For instance, when the filter driver is in use, it must subscribe to driver
up events to initiate recovery.
- For network drivers, inet is the only subscriber for now.
- Every VFS driver is statically linked with libdriver, every network driver
is statically linked with libnetdriver.

DRIVER LIBRARIES CHANGES:
- Libdriver is extended to provide generic receive() and ds_publish() interfaces
for VFS drivers.
- driver_receive() is a wrapper for sef_receive() also used in driver_task()
to discard spurious messages that were meant to be delivered to a previous
version of the driver.
- driver_receive_mq() is the same as driver_receive() but integrates support
for queued messages.
- driver_announce() publishes a driver up event for VFS drivers and marks
the driver as initialized and expecting a DEV_OPEN message.
- Libnetdriver is introduced to provide similar receive() and ds_publish()
interfaces for network drivers (netdriver_announce() and netdriver_receive()).
- Network drivers all support live update with no state transfer now.

KERNEL CHANGES:
- Added kernel call statectl for state management. Used by driver_announce() to
unblock eventual callers sendrecing to the driver.
2010-04-08 13:41:35 +00:00
..
const.h Mount updates: 2010-01-12 23:08:50 +00:00
device.c Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
dmap.c Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
dmap.h Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
exec.c Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
file.h Added filp_state for driver recovery and filp_select_flags to store select 2008-02-22 14:19:23 +00:00
filedes.c - Introduce support for sticky bit. 2009-12-20 20:27:14 +00:00
fproc.h - Introduce support for sticky bit. 2009-12-20 20:27:14 +00:00
fs.h Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
fscall.c panic() cleanup. 2010-03-05 15:05:11 +00:00
glo.h Mount updates: 2010-01-12 23:08:50 +00:00
link.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
lock.c panic() cleanup. 2010-03-05 15:05:11 +00:00
lock.h - Introduce support for sticky bit. 2009-12-20 20:27:14 +00:00
main.c Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
Makefile Convert drivers/ and servers/ over to bsdmake 2010-03-22 21:25:22 +00:00
misc.c Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
mount.c Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
open.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
param.h Mount updates: 2010-01-12 23:08:50 +00:00
path.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
pipe.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
protect.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
proto.h Driver refactory for live update and crash recovery. 2010-04-08 13:41:35 +00:00
read.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
request.c Removed unused variables, added const where possible. 2010-04-07 11:25:51 +00:00
request.h - Fix dangling symlink regression 2010-01-21 09:32:15 +00:00
select.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
select.h Asynchronous select implementation. 2008-02-22 15:46:59 +00:00
stadir.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
table.c New RS and new signal handling for system processes. 2010-03-17 01:15:29 +00:00
time.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
timers.c panic() cleanup. 2010-03-05 15:05:11 +00:00
type.h quick cleanup of old mfs cruft from vfs 2009-05-08 14:12:41 +00:00
utility.c Fix printfs with too few or too many parms, remove unused vars, fix incorrect flag tests, other code cleanup. 2010-04-01 13:25:05 +00:00
vmnt.c - Introduce support for sticky bit. 2009-12-20 20:27:14 +00:00
vmnt.h Mount updates: 2010-01-12 23:08:50 +00:00
vnode.c panic() cleanup. 2010-03-05 15:05:11 +00:00
vnode.h - Introduce support for sticky bit. 2009-12-20 20:27:14 +00:00
write.c Remove useless variables and the computations on them. 2010-02-19 10:00:32 +00:00