diff options
Diffstat (limited to 'lib/tdb_compat')
| -rw-r--r-- | lib/tdb_compat/tdb_compat.c | 24 | ||||
| -rw-r--r-- | lib/tdb_compat/tdb_compat.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/lib/tdb_compat/tdb_compat.c b/lib/tdb_compat/tdb_compat.c index 0406eff55e..7fd3caf6b5 100644 --- a/lib/tdb_compat/tdb_compat.c +++ b/lib/tdb_compat/tdb_compat.c @@ -38,6 +38,30 @@ enum TDB_ERROR tdb_transaction_start_nonblock(struct tdb_context *tdb) return ecode; } +enum TDB_ERROR tdb_chainlock_nonblock(struct tdb_context *tdb, TDB_DATA key) +{ + union tdb_attribute locking, orig; + enum TDB_ERROR ecode; + + orig.base.attr = TDB_ATTRIBUTE_FLOCK; + ecode = tdb_get_attribute(tdb, &orig); + if (ecode != TDB_SUCCESS) + return ecode; + + /* Replace locking function with our own. */ + locking = orig; + locking.flock.data = &orig; + locking.flock.lock = lock_nonblock; + + ecode = tdb_set_attribute(tdb, &locking); + if (ecode != TDB_SUCCESS) + return ecode; + + ecode = tdb_chainlock(tdb, key); + tdb_unset_attribute(tdb, TDB_ATTRIBUTE_FLOCK); + return ecode; +} + /* For TDB1 tdbs, read traverse vs normal matters: write traverse locks the entire thing! */ int64_t tdb_traverse_read_(struct tdb_context *tdb, diff --git a/lib/tdb_compat/tdb_compat.h b/lib/tdb_compat/tdb_compat.h index 0d58075c80..e0a2bf8e5e 100644 --- a/lib/tdb_compat/tdb_compat.h +++ b/lib/tdb_compat/tdb_compat.h @@ -87,6 +87,8 @@ int tdb_reopen_all(int parent_longlived); /* tdb2 does nonblocking functions via attibutes. */ enum TDB_ERROR tdb_transaction_start_nonblock(struct tdb_context *tdb); +enum TDB_ERROR tdb_chainlock_nonblock(struct tdb_context *tdb, TDB_DATA key); + /* Convenient (typesafe) wrapper for tdb open with logging */ #define tdb_open_compat(name, hsize, tdb_fl, open_fl, mode, log_fn, log_data) \ |