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Guenther
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purely cosmetic, no code change.
Guenther
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Guenther
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Guenther
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Guenther
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Guenther
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This removes some deep references to procid_self()
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Found by clang-analyzer.
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Guenther
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Guenther
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This shrinks include/includes.h.gch by the size of 7 MB and reduces build time
as follows:
ccache build w/o patch
real 4m21.529s
ccache build with patch
real 3m6.402s
pch build w/o patch
real 4m26.318s
pch build with patch
real 3m6.932s
Guenther
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When a samba server process dies hard, it has no chance to clean up its entries
in locking.tdb, brlock.tdb, connections.tdb and sessionid.tdb.
For locking.tdb and brlock.tdb Samba is robust by checking every time we read
an entry from the database if the corresponding process still exists. If it
does not exist anymore, the entry is deleted. This is not 100% failsafe though:
On systems with a limited PID space there is a non-zero chance that between the
smbd's death and the fresh access, the PID is recycled by another long-running
process. This renders all files that had been locked by the killed smbd
potentially unusable until the new process also dies.
This patch is supposed to fix the problem the following way: Every process ID
in every database is augmented by a random 64-bit number that is stored in a
serverid.tdb. Whenever we need to check if a process still exists we know its
PID and the 64-bit number. We look up the PID in serverid.tdb and compare the
64-bit number. If it's the same, the process still is a valid smbd holding the
lock. If it is different, a new smbd has taken over.
I believe this is safe against an smbd that has died hard and the PID has been
taken over by a non-samba process. This process would not have registered
itself with a fresh 64-bit number in serverid.tdb, so the old one still exists
in serverid.tdb. We protect against this case by the parent smbd taking care of
deregistering PIDs from serverid.tdb and the fact that serverid.tdb is
CLEAR_IF_FIRST.
CLEAR_IF_FIRST does not work in a cluster, so the automatic cleanup does not
work when all smbds are restarted. For this, "net serverid wipe" has to be run
before smbd starts up. As a convenience, "net serverid wipedbs" also cleans up
sessionid.tdb and connections.tdb.
While there, this also cleans up overloading connections.tdb with all the
process entries just for messaging_send_all().
Volker
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This uses another char* cast hack. Left alone for now.
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Jeremy.
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(cherry picked from commit 4d23d777bc6d4fad20d0f3084fe658635812bee9)
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Add a simple "processed packet queue" cache to stop nmbd responding to
packets received on the broadcast and non-broadcast socket (which
it has opened when "nmbd bind explicit broadcast = yes").
This is a very simple packet queue - it only keeps the packets
processed during a single call to listen_for_packets() (i.e. one
select call). This means that if the delivery notification for a
packet received on both broadcast and non-broadcast addresses
is done in two different select calls, the packet will still be
processed twice. This is a very rare occurrance and we can just
live with it when it does as the protocol is stateless. If this
is ever flagged as a repeatable problem then we can add a longer
lived cache, using timeout processing to clear etc. etc. But without
storing all packets processed we can never be *sure* we've eliminated
the race condition so I'm going to go with this simple solution until
someone proves a more complex one is needed :-).
Jeremy.
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Fix a comment typo.
Jeremy.
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broadcast"
metze
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And send replies always via the unicast address of the subnet.
This behavior is off by default (as before)
and can be enabled with "nmbd:bind explicit broadcast = yes".
metze
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Jeremy.
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This provides a compromise between stability and performance: gencache is a
persistent database these days that for performance reasons can not use tdb
transactions for all writes. This patch splits up gencache into gencache.tdb
and gencache_notrans.tdb. gencache_notrans is used with CLEAR_IF_FIRST, writes
to it don't use transactions. By default every 5 minutes and when a program
exits, all entries from _notrans.tdb are transferred to gencache.tdb in one
transaction.
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When we run out of file descriptors for some reason, every new
connection forks a child that immediately panics causing smbd to
coredump. This seems unnecessarily harsh; with this code change we
now catch that error and merely log a message about it and exit
without the core dump.
Signed-off-by: Tim Prouty <tprouty@samba.org>
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Jeremy.
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This renames push_string in Samba3 into push_string_base and
push_string_check for the two different use cases.
This should allow push_string to be imported from Samba4, using it's
calling conventions.
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to run elections
Fix logic bug that causes nmbd to wait 5 minutes before
looking for a master browser. This one is *old* :-). Thanks
for Simo for bugging me on this.
Jeremy.
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This will be used as part a the franky setup, where nmbd will forward
the MAILSLOT requests to the local samba4 CLDAP server.
"nmbd_proxy_logon:cldap_server = 127.0.0.1" would configure
and activate this feature.
metze
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Jeremy.
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Jeremy.
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When nmbd is acting as WINS, it picks the first interface's IP as WINS
server's IP. If the first interface's IP is zero, we will just quit
(even though we might have other interfaces with valid IPs).
This patch makes nmbd look at all interfaces and pick the first interface
with a valid IP as the WINS server's IP.
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metze
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SIGTERM
The arguments of commit d98bea900ee694cdba83149620c65bd7f8765f26
are no longer valid.
metze
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interfaces
We should handle all 3 cases where we actively wait for interfaces
in the same way.
metze
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triggered now
metze
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And always setup the fd events.
metze
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Michael
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Michael
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