; netobj fh; /* a counted file handle */ int pid; /* holder of the lock */ unsigned l_offset; /* beginning offset of the lock */ unsigned l_len; /* byte length of the lock; * zero means through end of file */ }; /* * lock holder identifier */ struct klm_holder { bool exclusive; /* FALSE if shared lock */ int svid; /* holder of the lock (pid) */ unsigned l_offset; /* beginning offset of the lock */ unsigned l_len; /* byte length of the lock; * zero means through end of file */ }; /* * reply to KLM_LOCK / KLM_UNLOCK / KLM_CANCEL */ struct klm_stat { klm_stats stat; }; /* * reply to a KLM_TEST call */ union klm_testrply switch (klm_stats stat) { case klm_denied: struct klm_holder holder; default: /* All other cases return no arguments */ void; }; /* * arguments to KLM_LOCK */ struct klm_lockargs { bool block; bool exclusive; struct klm_lock alock; }; /* * arguments to KLM_TEST */ struct klm_testargs { bool exclusive; struct klm_lock alock; }; /* * arguments to KLM_UNLOCK */ struct klm_unlockargs { struct klm_lock alock; }; program KLM_PROG { version KLM_VERS { klm_testrply KLM_TEST (struct klm_testargs) = 1; klm_stat KLM_LOCK (struct klm_lockargs) = 2; klm_stat KLM_CANCEL (struct klm_lockargs) = 3; /* klm_granted=> the cancel request fails due to lock is already granted */ /* klm_denied=> the cancel request successfully aborts lock request */ klm_stat KLM_UNLOCK (struct klm_unlockargs) = 4; } = 1; } = 100020;