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path: root/lib/tdb2/tdb1_lock.c
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2011-09-14tdb2: fix bogus error from tdb_unlockall() after fork in tdb1 backend.Rusty Russell1-3/+3
We're always allowed to unlock after a fork; by setting the count to 0 before calling the generic unlock function we don't trigger the pid check. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit ba5bb8eae6bcd230fd5321c618d6a9d56e74e7d1)
2011-09-14tdb2: check lock owner in tdb1 backend.Rusty Russell1-24/+71
This reports errors if we fork() while holding a lock, or misuse a tdb which we have dual-opened. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit bef6f1b02e95370ecb2cb44be87c82afc9cb74b2)
2011-09-14tdb2: catch errors in tdb1_needs_recovery()Rusty Russell1-5/+19
The tdb1 backend simply returns "true" if there's an error determining if a tdb needs recovery. But this leads failtest down a rabbit hole; it's better to return the error at this case (and makes for better for diagnostics, since they will come from the first fault, not later in tdb1_transaction_recover(). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 332d0c29baa6896e67c439aeb47f58a104fbc781)
2011-09-14tdb2: unify tdb1_chainlock et al. into tdb_chainlockRusty Russell1-25/+1
Switch on the TDB_VERSION1 flag. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit ceb2f3eacbad917ee990afbc3dd800bfb0607887)
2011-09-14tdb2: merge tdb1_context into tdb_context.Rusty Russell1-42/+42
Finally, we split out the tdb2-specific parts of tdb_context, and put them into a "tdb2" sub-struct; the tdb1 parts go into a "tdb1" sub-struct. We get rido of tdb1_context and use tdb_context everywhere. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit bbeb528e74c0e234e1f724ac8d54be404cfc6f9a)
2011-09-14tdb2: use tdb->flags & TDB_RDONLY instead of tdb->read_only for TDB1 code.Rusty Russell1-2/+2
There's also a semantic change here: for tdb1, being read-only meant no locking, and it was an error to try to lock a r/o database. For TDB2, you'd need to specify TDB_NOLOCK, which suppresses locking silently. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 4dc29a338fadeac805b369b4b0851c02f1b152c7)
2011-09-14tdb2: Make TDB1 use the same tdb_hash() wrapper as TDB2Rusty Russell1-4/+9
This means converting the tdb1 inbuilt hash functions to the tdb2-style, so they return 64 bit. We truncate to 32 bit everywhere but in tdb_check() which needs to do so explicitly. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 3e46dde21261966941469a6c75e1b45cd2d26324)
2011-09-14tdb2: suppress tdb1 backend logging when locking returns EINTR or EAGAINRusty Russell1-1/+2
The TDB1 code logs multiple times on errors; we must prevent that in the limited case where locking fails. With TDB2, this can happen due to the lock function attribute, where the user supplies replacement locking functions which are allowed to return with errno EAGAIN or EINTR for various special-effects. Flooding the logs for this is unfriendly. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit a391b2b900bc6d5c0467869a454bdb5c51b5a3be)
2011-09-14tdb2: make tdb1 use same low-level lock functions.Rusty Russell1-312/+56
This means they will use the TDB_ATTRIBUTE_FLOCK functions, and get automatic reopen support. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit fbad02b680b6cbc33ae305ae1cbcdead4eedc7b1)
2011-09-14tdb2: Make tdb1 use the tdb_file structure.Rusty Russell1-65/+65
Because tdb2 allows multiple opens of the same TDB, we separate out the file information from the struct tdb_context. Do the same for tdb1. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 60210a73ec08a7b34ba637ad19e6749cf6dc1952)
2011-09-14tdb2: Make TDB1 code use TDB2's open flags.Rusty Russell1-4/+4
This means getting rid of TDB_VOLATILE (perhaps we should use an attribute for that?), TDB_INCOMPATIBLE_HASH (use the tdb_attribute_hash for that) and TDB_CLEAR_IF_FIRST (use the tdb_attribute_openhook for that). We also get rid of TDB_DISALLOW_NESTING: that's the default for TDB2. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 22d0e0dc59fc9d7e0046fec6971ef478c2d604fd)
2011-09-14tdb2: Make tdb1 share tdb_store flags, struct tdb_data and TDB_MAGIC_FOOD.Rusty Russell1-22/+22
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 8a47d50d72ea62e378dc92b150c92c1317c73fa3)
2011-09-14tdb2: make TDB1 code use tdb2's TDB_ERROR and tdb_logerr()Rusty Russell1-31/+41
To do this, we make sure that the first few fields of tdb1_context and tdb_context are the same. This sweep also fixes up a few paths where we weren't setting tdb->ecode before our old logging function. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 919937354a331bb964564a11b5a5b80403ff8db9)
2011-09-14tdb2: get rid of TDB1 mark and nonblock functions.Rusty Russell1-26/+10
We do this using hooks in tdb2. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 444fade529f68eb2b0aebbc8de442478c5c6f916)
2011-09-14tdb2: remove _PUBLIC_ in tdb1 functions.Rusty Russell1-8/+8
They'll all be accessed via the tdb2 API. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 39f55294799c6443c0ad7bef09f1c113cf89d295)
2011-09-14tdb2: Remove unused tdb1 functions.Rusty Russell1-68/+0
We're going to use TDB2's API, so some TDB1 APIs are obviously unnecessary. We also get rid of USE_RIGHT_MERGES and TRACE code. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit b929638e3cfe629285af3ecd0813e03eaeaa1133)
2011-09-14tdb2: import TDB1 code.Rusty Russell1-0/+847
We import the entire codebase, putting a "tdb1_" prefix on the files and changing the "tdb_" prefix to "tdb1_" everywhere. The next patches will gradually merge it with the TDB2 code where necessary. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 19e6c1a250ade1e7204ada17163294855585e825)
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