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- /* @(#)klm_prot.x 2.1 88/08/01 4.0 RPCSRC */
- /* @(#)klm_prot.x 1.7 87/07/08 Copyr 1987 Sun Micro */
-
-
- /*
- * Kernel/lock manager protocol definition
- * Copyright (C) 1986 Sun Microsystems, Inc.
- *
- * protocol used between the UNIX kernel (the "client") and the
- * local lock manager. The local lock manager is a deamon running
- * above the kernel.
- */
- 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;
-
- const LM_MAXSTRLEN = 1024;
-
- /*
- * lock manager status returns
- */
- enum klm_stats {
- klm_granted = 0, /* lock is granted */
- klm_denied = 1, /* lock is denied */
- klm_denied_nolocks = 2, /* no lock entry available */
- klm_working = 3 /* lock is being processed */
- };
-
- /*
- * lock manager lock identifier
- */
- struct klm_lock {
- string server_name<LM_MAXSTRLEN>;
- 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;
- };
-