tdb_chainlock (3)

NAME

       tdb_chainlock  - lock a group of keys tdb_chainunlock - unlock a previ-
       ously locked group of keys

SYNOPSIS

       #include <tdb.h>

       int tdb_chainlock(TDB_CONTEXT *tdb, TDB_DATA key);
       void tdb_chainunlock(TDB_CONTEXT *tdb, TDB_DATA key);

DESCRIPTION

       tdb_chainlock is a low-level function used to  lock  a  particular  key
       (and  a  number  of other keys) without any checking: any other process
       attempting to perform tdb operations on those  keys  will  block  until
       tdb_chainunlock is called.

NOTES

       It is the user's responsibility to ensure that they do not deadlock the
       database using these functions: something which is impossible using the
       other access functions.

RETURN VALUE

       A return value of 0 indicates success and -1 indicates failure.

AUTHORS

       Software: Andrew Tridgell <tridge@linuxcare.com> Man page: Rusty.

SEE ALSO

       gdbm(3), tdb(3), tdb_lockall(3).

Linux Programmer's Manual            Samba         tdb_chainlock(Oct 13, 2000)