klm_prot.x
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上传日期:2009-04-28
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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 */
- /*
- * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
- * unrestricted use provided that this legend is included on all tape
- * media and as a part of the software program in whole or part. Users
- * may copy or modify Sun RPC without charge, but are not authorized
- * to license or distribute it to anyone else except as part of a product or
- * program developed by the user.
- *
- * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
- * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun RPC is provided with no support and without any obligation on the
- * part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
- /*
- * 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.
- */
- 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;
- };
- 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;