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* internal code cleanups
* crash fix for pytdb
* fix for 4GB overflow detection
See http://permalink.gmane.org/gmane.network.samba.internals/42906 for
an example of what happens.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Jun 4 16:07:55 CEST 2013 on sn-devel-104
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Trying to be more consistent.
Karolin
Reviewed-by: Andreas Schneider <asn@samba.org>
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This allows for an emergency best-effort dump. It's a little better than
strings(1).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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(As suggested by Stefan Metzmacher, based on the change to ntdb.)
Since commit ec96ea690edbe3398d690b4a953d487ca1773f1c, we handle the case
where a process dies during a transaction commit. Unfortunately, TDB_NOSYNC
means this no longer works, as it disables the recovery area as well as the
actual msync/fsync. We should do everything except the syncs.
This also means we can do a complete test with $TDB_NO_FSYNC set; just
to get more complete coverage, we disable it explicitly for one test
(where we override the actual sync calls anyway).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Then we unset it inside the tdb test target itself. This means that
new code can't accidently forget it, and we can set it in the
'buildnice' script on sn-devel, for example.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Thu Mar 29 13:12:46 CEST 2012 on sn-devel-104
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Commit 4d58d0fa8f936e7efdc02e31c053d42a47b3e62a didn't work for lib/tdb
outside the build tree: symlink was pointing to wrong place.
Copy simplification from lib/tdb2, and fix the build farm.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Sat Mar 10 07:07:45 CET 2012 on sn-devel-104
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Now we can build the test binaries: the CCAN style is to compile
everything called "compile_ok*.c", compile and run everything called
"run*.c", compile, link with the module, and run everything called
"api*.c", and link any other C files (presumably test helpers) into
all the tests.
Unfortunately, actually passing that between the various parts of
wscript is painful, so I open-coded the names.
Also, the tests expect to be run in a (temporary) directory they can
pollute, with the test directory found in test/ (to find the canned
TDB files, for example).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Tue Feb 14 06:53:46 CET 2012 on sn-devel-104
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Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sun Nov 13 19:38:38 CET 2011 on sn-devel-104
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Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Apr 23 04:19:05 CEST 2011 on sn-devel-104
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for talloc/tevent/tdb, only install headers if we are doing a
standalone build
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using os.putenv() causes too much confusion, as it doesn't update
os.getenv()
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Wed Dec 29 10:12:05 CET 2010 on sn-devel-104
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metze
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This function is a wrapper around waf's check_python_header.
It avoids searching more than once for the headers bringing a small
speed improvement and a better lisibility of the logs.
But it's mainly to avoid a nasty bug when python libraries are in path
pointed by python_LIBPL (ie. /usr/local/lib/python2.6/config/) instead
of python_LIBDIR (ie. /usr/local/lib).
On the first call waf will correctly find that in order to link with
python libs it needs to add -L$python_LIBPL.
But on the next calls of check_python_headers, waf will use both the
current library path value (ie. -L/usr/local/lib/python2.6/config) and
-L$python_LIBDIR (ie. /usr/local/lib/) which will make him beleive that
python libraries are in $python_LIBDIR which at the end will make the
final link test fails in check_python_headers as it will not use the
good directory.
So by avoiding calling check_python_headers more than once we avoid
making waf fooling itself.
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we need the vnum for ABI checking for public libraries built as
private libraries when bundled
Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Thu Dec 9 12:47:41 CET 2010 on sn-devel-104
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This changes our version-script generation to use the ABI files that
are saved in git with each version number change of our public
libraries.
We use these ABI files to generate a linker version script that gives
the exact version number that each symbol was introduced. This
provides us with automatic fine grained symbol versioning.
Pair-Programmed-With: Jelmer Vernooij <jelmer@samba.org>
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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This allows you to do "make reconfigure" to re-run configure only if
needed
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'private_library' better captures what we are trying to get at when we
bundle a library
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indentation was far too deep
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Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sun Oct 17 18:23:16 UTC 2010 on sn-devel-104
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use RUN_COMMAND() to handle signal errors and exit status
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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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Based on an idea by Simon McVittie, largely rewritten
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lib/tdb: change version to 1.2.4 after hash checking improvments
metze
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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We saw tdb_lockall() take 71 seconds under heavy load; this is because Linux
(at least) doesn't prevent new small locks being obtained while we're waiting
for a big log.
The workaround is to do divide and conquer using non-blocking chainlocks: if
we get down to a single chain we block. Using a simple test program where
children did "hold lock for 100ms, sleep for 1 second" the time to do
tdb_lockall() dropped signifiantly. There are ln(hashsize) locks taken in
the contended case, but that's slow anyway.
More analysis is given in my blog at http://rusty.ozlabs.org/?p=120
This may also help transactions, though in that case it's the initial
read lock which uses this gradual locking routine; the update-to-write-lock
code is separate and still tries to update in one go.
Even though ABI doesn't change, minor version bumped so behavior change
can be easily detected.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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-samba4 suffix for libraries that are bundled.
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This needed an update to the python tool in waf
thanks to Kai for spotting this
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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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when building library FOO, don't try to find the system library FOO
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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Building a RPM from the fedora spec file now works with minimal changes
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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