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| author | Jeremy Allison <jra@samba.org> | 2002-11-09 03:36:47 +0000 |
|---|---|---|
| committer | Jeremy Allison <jra@samba.org> | 2002-11-09 03:36:47 +0000 |
| commit | 0c2f84dfd00d6f6141726150ec816d8804c70e88 (patch) | |
| tree | e3884b932b649e4077c639566daf4e86c28a3c4c /source3/tdb/tdb.c | |
| parent | 2458c8de648aa5b8f0785f521c2ec476e6707a93 (diff) | |
| download | samba-0c2f84dfd00d6f6141726150ec816d8804c70e88.tar.gz samba-0c2f84dfd00d6f6141726150ec816d8804c70e88.tar.bz2 samba-0c2f84dfd00d6f6141726150ec816d8804c70e88.zip | |
Add chainlock_read functions to get a read lock. Used in *massively*
contended tdb's (and I've got one :-).
Jeremy.
(This used to be commit d4b795e6a451d9abaa4a928cf5d34e12b2babc2d)
Diffstat (limited to 'source3/tdb/tdb.c')
| -rw-r--r-- | source3/tdb/tdb.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/source3/tdb/tdb.c b/source3/tdb/tdb.c index 2a6dca16a8..e539376ac7 100644 --- a/source3/tdb/tdb.c +++ b/source3/tdb/tdb.c @@ -186,7 +186,7 @@ static int tdb_brlock(TDB_CONTEXT *tdb, tdb_off offset, if (tdb->flags & TDB_NOLOCK) return 0; - if (tdb->read_only) { + if ((rw_type == F_WRLCK) && (tdb->read_only)) { errno = EACCES; return -1; } @@ -1802,6 +1802,16 @@ int tdb_chainunlock(TDB_CONTEXT *tdb, TDB_DATA key) return tdb_unlock(tdb, BUCKET(tdb_hash(&key)), F_WRLCK); } +int tdb_chainlock_read(TDB_CONTEXT *tdb, TDB_DATA key) +{ + return tdb_lock(tdb, BUCKET(tdb_hash(&key)), F_RDLCK); +} + +int tdb_chainunlock_read(TDB_CONTEXT *tdb, TDB_DATA key) +{ + return tdb_unlock(tdb, BUCKET(tdb_hash(&key)), F_RDLCK); +} + /* register a loging function */ void tdb_logging_function(TDB_CONTEXT *tdb, void (*fn)(TDB_CONTEXT *, int , const char *, ...)) |