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2007-10-10r10421: following on discussions with simo, I have worked out a way ofAndrew Tridgell1-1/+2
allowing searches to proceed while another process is in a transaction, then only upgrading the transaction lock to a write lock on commit. The solution is: - split tdb_traverse() into two calls, called tdb_traverse() and tdb_traverse_read(). The _read() version only gets read locks, and will fail any write operations made in the callback from the traverse. - the normal tdb_traverse() call allows for read or write operations in the callback, but gets the transaction lock, preventing transastions from starting inside the traverse In addition we enforce the following rule that you may not start a transaction within a traverse callback, although you can start a traverse within a transaction With these rules in place I believe all the deadlock possibilities are removed, and we can now allow for searches to happen in parallel with transactions (This used to be commit 7dd31288a701d772e45b1960ac4ce4cc1be782ed)
2007-10-10r10405: added transactions into tdb, and hook them into ldb. See myAndrew Tridgell1-2/+15
samba-technical posting for more details on the transactions design. This also adds a number of command line arguments to tdbtorture, making it more flexible, and fixes some lock deadlock conditions in the tdbtorture code. (This used to be commit 06bd8abba942ec9f1e23f5c5d546cbb71ca3a701)
2007-10-10r10253: a fairly large tdb cleanup and re-organise. Nearly all of this changeAndrew Tridgell4-149/+65
just involves splitting up the core tdb.c code into separate files on logical boundaries, but there are some minor functional changes as well: - move the 'struct tdb_context' into tdb_private.h, hiding it from users. This was done to allow the structure to change without breaking code that uses tdb. - added accessor functions tdb_fd(), tdb_name(), and tdb_log_fn() to access the elements of struct tdb_context that were used by external code but are no longer visible - simplied tdb_append() to use tdb_fetch()/tdb_store(), which is just as good due to the way tdb locks work - changed some of the types (such as tdb_off to tdb_off_t) to make syntax highlighting work better - removed the old optional spinlock code. It was a bad idea. - fixed a bug in tdb_reopen_all() that caused tdbtorture to sometimes fail or report nasty looking errors. This is the only real bug fixed in this commit. Jeremy/Jerry, you might like to pickup this change for Samba3, as that could definately affect smbd in Samba3. The aim of all of these changes is to make the tdb transactions/journaling code I am working on easier to write. I started to write it on top of the existing tdb.c code and it got very messy. Splitting up the code makes it much easier to follow. There are more cleanups we could do in tdb, such as using uint32_t instead of u32 (suggested by metze). I'll leave those for another day. (This used to be commit 4673cdd0d261614e707b72a7a348bb0e7dbb2482)
2007-10-10r9455: Support for reading the policy databaseJelmer Vernooij1-0/+2
(This used to be commit 7548a5012aad41bde0652d4532d184545997be86)
2007-10-10r9448: Work on reading the secrets tdb. Build tdbsam support by default.Jelmer Vernooij1-0/+2
(This used to be commit 9ea601c0a675767f8ea5f316c9355572dffbc4c0)
2007-10-10r5780: Remove unused arguments.Tim Potter1-1/+1
(This used to be commit 1ee84e373e2b44c96f9353f194b766d6a144e7ce)
2007-10-10r5779: Remove signal and timeout gubbage from tdb.Tim Potter1-1/+0
(This used to be commit dbb56e9a59cf00d57b09ded6d60bf9424d5f1f4c)
2007-10-10r5296: - only include the tdb headers where they are neededAndrew Tridgell2-0/+4
- removed the u32 hack in events.c as I think this was only needed as tdb.h defines u32. Metze, can you check that this hack is indeed no longer needed on your suse system? (This used to be commit 6f79432fe656164d4770dbce114a30dda5e7bf9a)
2007-10-10r5143: don't generate prototypes for lib/tdb/Stefan Metzmacher2-1/+11
metze (This used to be commit 1c48c30aaf58d069cdba2f59b5c012bc4bdd3efc)
2007-10-10r2985: got rid of the unused tdb_lockkeys() and tdb_unlockkeys() functionsAndrew Tridgell1-3/+0
they have been broken for 4 years (ever since they were added) and have been never used, which makes them prime candidates for destruction. (This used to be commit 0b53ab85aae4569c04495f07c18a65fd6b47bf4c)
2007-10-10r2493: allow tdb to build standaloneAndrew Tridgell1-0/+4
(This used to be commit 0d5af5b70bd010e7107b18f73a4b899e05c4f025)
2007-10-10r2238: the tdb_debug() function was totally bogus - remove it (you can'tAndrew Tridgell1-3/+1
convert a ... varargs function to a va_list by just a cast!!) also mark the tdb log function with PRINTF_ATTRIBUTE() and fixed some bad format errors in tdb.c that jim found. (This used to be commit c26c92eb8f538748fcbb2ae5a0a8a02bffbbbf86)
2007-10-10r2034: Allow user-selectable hash functions on open only.Jeremy Allison1-1/+4
Jeremy. (This used to be commit b43320ee5c9ac14c330e61ae62e0786b088e04fa)
2007-10-10r1053: Make tdb build standalone:Tim Potter1-2/+2
- #include <stdint.h> - uint_t isn't a valid type, change back to unsigned int (This used to be commit f690325565d2393bba3cb9f6e7cdf3753cbd4423)
2007-10-10r960: convert 'unsigned int' to uint_t in the most placesStefan Metzmacher1-2/+2
metze (This used to be commit 18062d2ed9fc9224c43143c10efbf2f6f1f5bbe0)
2007-10-10r848: convert lib/tdb into the same layout as lib/ldbStefan Metzmacher3-0/+249
metze (This used to be commit bacab322ce89979f0ad0811cd15b73d81eceb69d)