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In itself, this is pretty pointless. But in the next steps I'll convert the
winbind internal communication to wb_reqtrans which allocates the request
properly. This minimizes the later diff.
Volker
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>
The first is "kerberos method" and replaces the "use kerberos keytab"
with an enum. Valid options are:
secrets only - use only the secrets for ticket verification (default)
system keytab - use only the system keytab for ticket verification
dedicated keytab - use a dedicated keytab for ticket verification.
secrets and keytab - use the secrets.tdb first, then the system keytab
For existing installs:
"use kerberos keytab = yes" corresponds to secrets and keytab
"use kerberos keytab = no" corresponds to secrets only
The major difference between "system keytab" and "dedicated keytab" is
that the latter method relies on kerberos to find the correct keytab
entry instead of filtering based on expected principals.
The second parameter is "dedicated keytab file", which is the keytab
to use when in "dedicated keytab" mode. This keytab is only used in
ads_verify_ticket.
From analysis by hargagan <shargagan@novell.com> :
"The winbindd_child_died() is also getting called from process_loop() in case of
SIGCHLD signal. In this case it doesn't make the timeout_handler to NULL for
the first request. It then initiate a new request using
schedule_async_request() which installs a new timeout handler for the same
request. In such a case, for a badly unresponsive system both the timeout
handler can be called. For the first call the "private_data" will be cleared
and for another call the timeout handler will be detecting the double free. So,
for such a case as well, the winbindd_child_died() should make the
timeout_handler to NULL."
Jeremy.
The scanner did not figure out that we always have a primary domain, so it
complained about us potentially passing a NULL pointer down to
set_domain_online_request() where it is dereferenced.
Make the code a bit clearer.
(This used to be commit e6e8d108f95ed974f98f3f57adcfbbde4e00fad9)
When SIGCHLD handling is delayed for some reason, sending a request to a child
can fail early because the child has died already. In this case
async_main_request_sent() directly called the continuation function without
properly removing the malfunctioning child process and the requests in the
queue. The next request would then crash in the DLIST_ADD_END() in
async_request() because the request pending for the child had been
talloc_free()'ed and yet still was referenced in the list.
This one is *old*...
Volker
(cherry picked from commit 8691709626b0d461de91b8fc9d10c730d1f183dd)
(This used to be commit c70e2b6476d2d99c79624e15a4a3cfcdc850fc7c)
In reloading the smb.conf, if a "log file" is specified in smb.conf,
winbind children will overwrite the logfile name to be the same as the
parent.
Jeremy.
(This used to be commit 62d319cc1a2ef891866b2ddbd22f3ed0944356af)
smbcontrol winbindd debug level would only set the debug level of the
parent winbindd process and not the child processes. This patch adds
the functionality of broadcasting the debug message to all winbindd
children. Now the debug level message is propagated to all the winbindd
processes that includes parent and children.
(This used to be commit cfbcfc3ffe74f28ec874a6bf1ab93f55f405b6e6)
