Rusty Russell 2dcf76c924 tdb: TDB_INCOMPATIBLE_HASH, to allow safe changing of default hash. ... 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>		2010-09-27 10:48:28 +09:30
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tdb.h	tdb: TDB_INCOMPATIBLE_HASH, to allow safe changing of default hash.	2010-09-27 10:48:28 +09:30