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2013-02-05tdb: Remove "header" from tdb_contextVolker Lendecke13-59/+64
header.hash_size was the only thing we ever referenced outside of tdb_open_ex and its direct callees. So this shrinks the tdb_context by 164 bytes. Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org> Autobuild-User(master): Stefan Metzmacher <metze@samba.org> Autobuild-Date(master): Tue Feb 5 13:18:28 CET 2013 on sn-devel-104
2013-02-05tdb: Pass argument "header" to check_header_hashVolker Lendecke1-4/+6
Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2013-02-05tdb: Pass argument "header" to tdb_new_databaseVolker Lendecke1-6/+8
Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2013-01-19Remove some unused variables.Jeremy Allison1-3/+0
Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2013-01-07tdb: Fix undefined prototype warningsVolker Lendecke1-0/+2
These functions are deliberately left without prototypes according to 3fdeaa399, but without prototypes we get warnings. Reviewed-by: Rusty Russell <rusty@samba.org> Autobuild-User(master): Volker Lendecke <vl@samba.org> Autobuild-Date(master): Mon Jan 7 11:20:19 CET 2013 on sn-devel-104
2013-01-07tdb: Fix \n in error messagesVolker Lendecke1-2/+2
Reviewed-by: Rusty Russell <rusty@samba.org>
2012-12-21tdb: Add a comment explaining the "check"Volker Lendecke1-1/+4
I had to ask git blame to find why we have to do it here... Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org> Autobuild-User(master): Stefan Metzmacher <metze@samba.org> Autobuild-Date(master): Fri Dec 21 13:54:39 CET 2012 on sn-devel-104
2012-12-21tdb: Make tdb_new_database() follow a more conventional styleVolker Lendecke1-3/+4
We usually "goto fail" on every error and then in normal flow set the return variable to success. This patch removes a comment which from my point of view is now obsolete. It violates the {} rule from README.Coding here in favor of the style used in this function. Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Fix a typoVolker Lendecke1-1/+1
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Fix a typoVolker Lendecke1-1/+1
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Use tdb_lock_covered_by_allrecord_lock in tdb_unlockVolker Lendecke1-7/+1
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Factor out tdb_lock_covered_by_allrecord_lock from tdb_lock_listVolker Lendecke1-23/+31
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Simplify logic in tdb_lock_list slightlyVolker Lendecke1-7/+22
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Slightly simplify tdb_lock_listVolker Lendecke1-11/+11
Avoid an else {} branch when we can do an early return Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Fix blank line endingsVolker Lendecke11-89/+89
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Fix a commentVolker Lendecke1-1/+1
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Fix a typoVolker Lendecke1-1/+1
Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-21tdb: Fix a missing CONVERTVolker Lendecke1-1/+1
methods->tdb_write expects data in on-disk format. For reading that record, methods->tdb_read() has taken care of the on-disk to in-memory representation according to the DOCONV() flag passed down. tdb_rec_write() is a wrapper around methods->tdb_write just doing the CONVERT() on the way to disk. Reviewed-by: Rusty Russell <rusty@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2012-12-12tdb: Improve the documentation of tdb_reopen() and tdb_close().Andreas Schneider1-2/+8
Reviewed-by: Simo Sorce <idra@samba.org> Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org> Autobuild-Date(master): Wed Dec 12 14:58:50 CET 2012 on sn-devel-104
2012-12-12tdb: Fix possible crash bugs in the python tdb code.Andreas Schneider1-2/+15
You can't call tdb_error() for tdb_reopen() or tdb_close(), both return the error code of close(2) and not a TDB_ERROR! Reviewed-by: Simo Sorce <idra@samba.org> Reviewed-by: Jelmer Vernooij <jelmer@samba.org>
2012-12-03lib/tdb: Rename manpages/ to man/.Karolin Seeger5-12/+12
Trying to be more consistent. Karolin Reviewed-by: Andreas Schneider <asn@samba.org>
2012-11-29docs: man tdbtool: Add missing meta data.Karolin Seeger1-1/+1
This avoids warnings during the waf build and removes "FIXME" entries from the manpage. Karolin Reviewed-by: Andreas Schneider <asn@samba.org>
2012-10-06tdb: Make tdb robust against improper CLEAR_IF_FIRST restartVolker Lendecke1-4/+28
When winbind is restarted, there is a potential crash in tdb. Following situation: We are in a cluster with ctdb. A winbind child hangs in a request to the DC. Cluster monitoring decides the node has a problem. Cluster monitoring decides to kill ctdbd. winbind child still hangs in a RPC request. winbind parent figures that ctdb is dead and immediately commits suicide. winbind parent is restarted by cluster management, overwriting gencache.tdb with CLEAR_IF_FIRST. The CLEAR_IF_FIRST logic as implemented now will not see that a child still has the tdb open, only the parent holds the ACTIVE_LOCK due to performance reasons. During the CLEAR_IF_FIRST logic is done, there is a very small window where we ftruncate(tfd, 0) the file and re-write a proper header without a lock. When during this small window the winbind child comes back, wanting to store something into gencache.tdb, that winbind child will crash with a SIGBUS. Sounds unlikely? See: [2012/09/29 07:02:31.871607, 0] lib/util.c:1183(smb_panic) PANIC (pid 1814517): internal error [2012/09/29 07:02:31.877596, 0] lib/util.c:1287(log_stack_trace) BACKTRACE: 35 stack frames: #0 winbindd(log_stack_trace+0x1a) [0x7feb7d4ca18a] #1 winbindd(smb_panic+0x2b) [0x7feb7d4ca25b] #2 winbindd(+0x1a3cc4) [0x7feb7d4bacc4] #3 /lib64/libc.so.6(+0x32900) [0x7feb7a929900] #4 /lib64/libc.so.6(memcpy+0x35) [0x7feb7a97f355] #5 /usr/lib64/libtdb.so.1(+0x6e76) [0x7feb7b0b0e76] #6 /usr/lib64/libtdb.so.1(+0x3d37) [0x7feb7b0add37] #7 /usr/lib64/libtdb.so.1(+0x863d) [0x7feb7b0b263d] #8 /usr/lib64/libtdb.so.1(+0x8700) [0x7feb7b0b2700] #9 /usr/lib64/libtdb.so.1(+0x2505) [0x7feb7b0ac505] #10 /usr/lib64/libtdb.so.1(+0x25b7) [0x7feb7b0ac5b7] #11 /usr/lib64/libtdb.so.1(tdb_fetch+0x13) [0x7feb7b0ac633] #12 winbindd(gencache_set_data_blob+0x259) [0x7feb7d4d8449] #13 winbindd(gencache_set+0x53) [0x7feb7d4d85b3] #14 winbindd(gencache_del+0x5e) [0x7feb7d4d879e] #15 winbindd(saf_delete+0x93) [0x7feb7d54b693] #16 winbindd(+0xe507e) [0x7feb7d3fc07e] #17 winbindd(+0xe85e5) [0x7feb7d3ff5e5] #18 winbindd(+0xe65be) [0x7feb7d3fd5be] #19 winbindd(+0xe7562) [0x7feb7d3fe562] #20 winbindd(init_dc_connection+0x2e) [0x7feb7d3fe5be] #21 winbindd(+0xe75d9) [0x7feb7d3fe5d9] #22 winbindd(cm_connect_netlogon+0x58) [0x7feb7d3fe658] #23 winbindd(_wbint_PingDc+0x61) [0x7feb7d410991] #24 winbindd(+0x103175) [0x7feb7d41a175] #25 winbindd(winbindd_dual_ndrcmd+0xb7) [0x7feb7d4107d7] #26 winbindd(+0xf8609) [0x7feb7d40f609] #27 winbindd(+0xf9075) [0x7feb7d410075] #28 winbindd(tevent_common_loop_immediate+0xe8) [0x7feb7d4db198] #29 winbindd(run_events_poll+0x3c) [0x7feb7d4d93fc] #30 winbindd(+0x1c2b52) [0x7feb7d4d9b52] #31 winbindd(_tevent_loop_once+0x90) [0x7feb7d4d9f60] #32 winbindd(main+0x7b3) [0x7feb7d3e7aa3] #33 /lib64/libc.so.6(__libc_start_main+0xfd) [0x7feb7a915cdd] #34 winbindd(+0xce2a9) [0x7feb7d3e52a9] This is in a winbind child, logfiles surrounding indicate the parent was restarted. This patch takes all chain locks around the CLEAR_IF_FIRST introduced tdb_new_database.
2012-10-06tdb: Make robust against shrinking tdbsRusty Russell1-12/+20
When probing for a size change (eg. just before tdb_expand, tdb_check, tdb_rescue) we call tdb_oob(tdb, tdb->map_size, 1, 1). Unfortunately this does nothing if the tdb has actually shrunk, which as Volker demonstrated, can actually happen if a "longlived" parent crashes. So move the map/update size/remap before the limit check. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-10-04tdb: add -e option to tdbdump (and docment it).Rusty Russell2-3/+53
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> Autobuild-User(master): Rusty Russell <rusty@rustcorp.com.au> Autobuild-Date(master): Thu Oct 4 03:16:06 CEST 2012 on sn-devel-104
2012-10-04tdb: tdbdump should log errors, and fail in that case.Rusty Russell1-2/+38
Dumping a corrupt database should not exit silently with 0 status! Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-10-04tdb: add tdb_rescue()Rusty Russell7-4/+622
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>
2012-10-02tdb: Fix a typoVolker Lendecke1-1/+1
Autobuild-User(master): Volker Lendecke <vl@samba.org> Autobuild-Date(master): Tue Oct 2 19:52:16 CEST 2012 on sn-devel-104
2012-08-10tdb/test: fix build on OSF/1Björn Jacke1-15/+15
Autobuild-User(master): Björn Jacke <bj@sernet.de> Autobuild-Date(master): Fri Aug 10 23:33:20 CEST 2012 on sn-devel-104
2012-08-04doc: Remove build/ from doxygen config or it will not work in brew.Andreas Schneider1-4/+1
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org> Autobuild-Date(master): Sat Aug 4 16:31:22 CEST 2012 on sn-devel-104
2012-07-30lib/tdb: Fix format string errors found by -Werror=format in tdb testsAndrew Bartlett1-4/+4
2012-07-16pytdb: Check if the database is closed before we touch itAndrew Bartlett2-10/+85
If .close() has already been called, we have to play dead - the self->ctx is just not valid any more, as we have been shut down to allow some other part of Samba to open the tdb. Andrew Bartlett Autobuild-User(master): Andrew Bartlett <abartlet@samba.org> Autobuild-Date(master): Mon Jul 16 13:51:52 CEST 2012 on sn-devel-104
2012-07-16pytdb: Check for errors parsing strings into TDB_DATAAndrew Bartlett1-0/+16
The call to PyStringAsString() can raise an exception, and we want to return that rather than following a NULL pointer later. Andrew Bartlett
2012-06-26tdb: finish weaning off err.h.Rusty Russell7-23/+28
Commit 3c4263e7580143c69225729f5b67f09c00add2fd said it removed err.h from tdb, unfortuntely it didn't: tap-interface.h still included it. This finishes it properly! Reported-by:Stefan Metzmacher <metze@samba.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Autobuild-User(master): Rusty Russell <rusty@rustcorp.com.au> Autobuild-Date(master): Tue Jun 26 10:22:03 CEST 2012 on sn-devel-104
2012-06-22tdb: don't use err.h in tests.Rusty Russell21-22/+1
It's not portable. While we could use ccan/err, it seems overkill since we actually only use it in one test (I obviously cut & paste the #include). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Autobuild-User(master): Rusty Russell <rusty@rustcorp.com.au> Autobuild-Date(master): Fri Jun 22 09:22:28 CEST 2012 on sn-devel-104
2012-06-22tdb: make TDB_NOSYNC merely disable sync.Rusty Russell3-15/+20
(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>
2012-06-22autobuild: always set TDB_NO_FSYNC.Rusty Russell1-0/+4
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>
2012-06-19tdb/wscript: Remove unecessary semicolons.Jelmer Vernooij1-4/+4
2012-06-14tdb: remove unused debug_fprintf() macro that breaks the buildStefan Metzmacher1-2/+0
The IRIX compiler doesn't support '...' in a macro. metze
2012-06-12tdb:tests: fix use of a non-existent word (existant)Michael Adam1-2/+2
2012-05-30build: Remove unused release scripts for tdbAndrew Bartlett6-497/+0
These now use waf dist, and the script/librelease.sh script as a wrapper. The mksyms.sh call in the source3/Makefile uses the copy in source3/script Andrew Bartlett
2012-03-29lib/tdb: Update ABIAmitay Isaacs2-1/+67
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
2012-03-29lib/tdb: Add/expose lock functions to support CTDBAmitay Isaacs1-2/+16
This patch adds two lock functions used by CTDB to perform asynchronous locking. These functions do not actually perform any fcntl operations, but only increment internal counters. - tdb_transaction_write_lock_mark() - tdb_transaction_write_lock_unmark() It also exposes two internal functions - tdb_lock_nonblock() - tdb_unlock() These functions are NOT exposed in include/tdb.h to prevent any further uses of these functions. If you ever need to use these functions, consider using tdb2. Signed-off-by: Amitay Isaacs <amitay@gmail.com>
2012-03-23lib/tdb: fix transaction issue for HAVE_INCOHERENT_MMAP.Rusty Russell1-11/+10
We unmap the tdb on expand, the remap. But when we have INCOHERENT_MMAP (ie. OpenBSD) and we're inside a transaction, doing the expand can mean we need to read from the database to partially fill a transaction block. This fails, because if mmap is incoherent we never allow accessing the database via read/write. The solution is not to unmap and remap until we've actually written the padding at the end of the file. Reported-by: Amitay Isaacs <amitay@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Autobuild-User: Rusty Russell <rusty@rustcorp.com.au> Autobuild-Date: Fri Mar 23 02:53:15 CET 2012 on sn-devel-104
2012-03-23lib/tdb: fix test/run-die-during-transaction when HAVE_INCOHERENT_MMAP.Rusty Russell1-0/+5
Since we force mmap on, we don't intercept writes to the db, so we never see it in an inconsistent state. #ifdef over the check that we should have recovered it at least once. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-03-23lib/tdb: fix missing return 0 code.Rusty Russell1-1/+1
fde694274e1e5a11d1473695e7ec7a97f95d39e4 made tdb_mmap return an int, but didn't put the return 0 on the "internal db" case. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-03-22lib/tdb: fix OpenBSD incoherent mmap.Rusty Russell4-24/+58
This comment appears in two places in the code (commit 4c6a8273c6dd3e2aeda5a63c4a62aa55bc133099 from 2001): /* * We must ensure the file is unmapped before doing this * to ensure consistency with systems like OpenBSD where * writes and mmaps are not consistent. */ But this doesn't help, because if one process is using mmap and another using pwrite, we get incoherent results. As demonstrated by OpenBSD's failure on the tdb unit tests. Rather than disable mmap on OpenBSD, we test for this issue and force mmap to be enabled. This means that we will fail on very large TDBs on 32-bit systems, but it's better than the horrendous performance penalty on every OpenBSD system. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-03-22lib/tdb: fix up run-die-during-transaction test cases on Solaris.Rusty Russell4-5/+4
By using a different include order, we end up with a different version of FILE_OFFSET_BITS (and probably other things) in parts of the test. The different variants get linked together, and the result is weird: the stat returns 0 size. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-03-14lib/tdb: remove unnecessary XOPEN and FILE_OFFSET_BITS defines in test/Rusty Russell17-20/+0
These were relics: they don't need to be defined here as long as we are careful to include the replace headers before any standard headers (we are). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Autobuild-User: Rusty Russell <rusty@rustcorp.com.au> Autobuild-Date: Wed Mar 14 10:12:26 CET 2012 on sn-devel-104
2012-03-10lib/tdb: fix tests for standalone out-of-tree.Rusty Russell1-1/+2
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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