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This also avoids it from being installed if it's already present on the
system.
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When we have a system talloc library, we still need to grab pytalloc.h
from lib/talloc. We don't want to just use -Ilib/talloc, as otherwise
we'll get the in-tree talloc.h which may not be compatible with the
system talloc.h
So we need to give the path to pytalloc.h
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if we are using the system talloc, the testsuite needs to use the
system talloc.h
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This allows us to re-initialise a tevent context without destroying
the pointer. That means that if someone keeps a long term ptr to the
event context across a fork it will still work.
This also brings the memory handling in single and standard process
models much closer together, which means less bugs that we don't find
with make test.
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These were causing thousands of warnings on solaris8
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this should be much more portable
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solaris has different getpwnam_r syntax
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way (using dump_data since it isn't always directly readable)
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metze
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Guenther
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We had a crash bug where a cached copy of a iconv convenience pointer
was used after being freed when loadparm asked for iconv to
reload. This could happen if a python module used a iconv based
function before loadparm was completed.
The fix is to ensure that any use of this pointer remains valid, by
reusing the pointer itself when it has already been initialised, but
filling in the child elements with the updated values.
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This makes it easier to debug the code in future.
metze
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In smbd there's a small gab between TALLOC_FREE(frame); before
be call smbd_parent_loop() where we don't have a valid talloc stackframe.
smbd_parent_loop() calls talloc_stackframe() only within the while(1) loop.
As DEBUG(2,("waiting for connections")) uses talloc_tos() to construct
the time header for the debug message we crash on some systems.
metze
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Signed-off-by: Stefan Metzmacher <metze@samba.org>
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Signed-off-by: Stefan Metzmacher <metze@samba.org>
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metze
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This can be used to get the uid we changed away from when we gained
root privileges
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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Signed-off-by: Stefan Metzmacher <metze@samba.org>
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Signed-off-by: Stefan Metzmacher <metze@samba.org>
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metze
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This allows commands with multiple arguments and quoting to be used,
while still avoiding running a shell (and this having shell expansion
problems)
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tdb transactions were designed to be robust against the machine
powering off, but interestingly were never designed to handle the case
where an administrator kill -9's a process during commit. Because
recovery is only done on tdb_open, processes with the tdb already
mapped will simply use it despite it being corrupt and needing
recovery.
The solution to this is to check for recovery every time we grab a
data lock: we could have gained the lock because a process just died.
This has no measurable cost: here is the time for tdbtorture -s 0 -n 1
-l 10000:
Before:
2.75 2.50 2.81 3.19 2.91 2.53 2.72 2.50 2.78 2.77 = Avg 2.75
After:
2.81 2.57 3.42 2.49 3.02 2.49 2.84 2.48 2.80 2.43 = Avg 2.74
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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To test the case of death of a process during transaction commit, add
a -k (kill random) option to tdbtorture. The easiest way to do this
is to make every worker a child (unless there's only one child), which
is why this patch is bigger than you might expect.
Using -k without -t (always transactions) you expect corruption, though
it doesn't happen every time. With -t, we currently get corruption but
the next patch fixes that.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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The current recovery code truncates the tdb file on recovery. This is
fine if recovery is only done on first open, but is a really bad idea
as we move to allowing recovery on "live" databases.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Now the transaction code uses the standard allrecord lock, that stops
us from trying to grab any per-record locks anyway. We don't need to
have special noop lock ops for transactions.
This is a nice simplification: if you see brlock, you know it's really
going to grab a lock.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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tdb_release_extra_locks() is too general: it carefully skips over the
transaction lock, even though the only caller then drops it. Change
this, and rename it to show it's clearly transaction-specific.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Now the transaction allrecord lock is the standard one, and thus is cleaned
in tdb_release_extra_locks(), _tdb_transaction_cancel() doesn't need to
know what type it is.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Centralize locking of all chains of the tdb; rename _tdb_lockall to
tdb_allrecord_lock and _tdb_unlockall to tdb_allrecord_unlock, and
tdb_brlock_upgrade to tdb_allrecord_upgrade.
Then we use this in the transaction code. Unfortunately, if the transaction
code records that it has grabbed the allrecord lock read-only, write locks
will fail, so we treat this upgradable lock as a write lock, and mark it
as upgradable using the otherwise-unused offset field.
One subtlety: now the transaction code is using the allrecord_lock, the
tdb_release_extra_locks() function drops it for us, so we no longer need
to do it manually in _tdb_transaction_cancel.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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