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I accidentally committed this patch which we carry in the Debian
packages.
Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Oct 23 18:37:16 UTC 2010 on sn-devel-104
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Avoid linking against socket_wrapper outside of developer mode.
Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Thu Oct 21 20:26:11 UTC 2010 on sn-devel-104
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Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Thu Oct 21 11:47:22 UTC 2010 on sn-devel-104
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This flag to tdb_open/tdb_open_ex effects creation of a new database:
1) Uses the Jenkins lookup3 hash instead of the old gdbm hash if none is
specified,
2) Places a non-zero field in header->rwlocks, so older versions of TDB will
refuse to open it.
This means that the caller (ie Samba) can set this flag to safely
change the hash function. Versions of TDB from this one on will either
use the correct hash or refuse to open (if a different hash is specified).
Older TDB versions will see the nonzero rwlocks field and refuse to open
it under any conditions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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This is a better hash than the default: shipping it with tdb makes it easy
for callers to use it as the hash by passing it to tdb_open_ex().
This version taken from CCAN and modified, which took it from
http://www.burtleburtle.net/bob/c/lookup3.c.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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We now use -fvisibilty=hidden to hide symbols from outside the tdb
shared library.
This also moved tdb_transaction_recover() into the tdb_private.h
header, as it should never have been a public API. For that reason we
are changing the version number. We're only doing a minor version
increment as it is extremely unlikely that anyone was actually using
tdb_transaction_recover() as its locking requirements were rather
unusual.
Pair-Programmed-With: Rusty Russell <rusty@samba.org>
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We need to keep TDB_ALLOW_NESTING as default behavior,
so that existing code continues to work.
However we may change the default together with a major version
number change in future.
metze
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Make the default be that transaction is not allowed and any attempt to create a nested transaction will fail with TDB_ERR_NESTING.
If an application can cope with transaction nesting and the implicit
semantics of tdb_transaction_commit(), it can enable transaction nesting
by using the TDB_ALLOW_NESTING flag.
(cherry picked from ctdb commit 3e49e41c21eb8c53084aa8cc7fd3557bdd8eb7b6)
Signed-off-by: Stefan Metzmacher <metze@samba.org>
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ctdb wants a quick way to detect corrupt tdbs; particularly, tdbs with
loops in their hash chains. tdb_check() provides this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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It was a regrettable hack which I used to reduce line count in tdb; in fact it caused confusion as can be seen in this patch.
In particular, ecode now needs to be set before TDB_LOG anyway, and having it exposed in
the header is useless (the struct tdb_context isn't defined, so it's doubly useless).
Also, we should never set errno, as io.c was doing.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Using tdb_transaction_prepare_commit() gives us 2-phase commits. This
allows us to safely commit across multiple tdb databases at once, with
reasonable transaction semantics
Signed-off-by: tridge@samba.org
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The tdb_repack() function repacks a TDB so that it has a single
freelist entry. The file doesn't shrink, but it does remove all
freelist fragmentation. This code originated in the CTDB vacuuming
code, but will now be used in ldb to cope with fragmentation from
re-indexing
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Useful to build multiple standalone libraries that depend on each other
without having to install them to the final install dir during the build.
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