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https://github.com/freebsd/freebsd-src
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138 lines
3.6 KiB
Text
138 lines
3.6 KiB
Text
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/*
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* Kernel/lock manager protocol definition
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* Copyright (C) 1986 Sun Microsystems, Inc.
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*
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* protocol used between the UNIX kernel (the "client") and the
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* local lock manager. The local lock manager is a deamon running
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* above the kernel.
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*/
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#ifndef RPC_HDR
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%#ifndef lint
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%/*static char sccsid[] = "from: @(#)klm_prot.x 1.7 87/07/08 Copyr 1987 Sun Micro";*/
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%/*static char sccsid[] = "from: @(#)klm_prot.x 2.1 88/08/01 4.0 RPCSRC";*/
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%static char rcsid[] = "$Id$";
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%#endif /* not lint */
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#endif
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const LM_MAXSTRLEN = 1024;
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/*
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* lock manager status returns
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*/
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enum klm_stats {
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klm_granted = 0, /* lock is granted */
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klm_denied = 1, /* lock is denied */
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klm_denied_nolocks = 2, /* no lock entry available */
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klm_working = 3 /* lock is being processed */
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};
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/*
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* lock manager lock identifier
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*/
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struct klm_lock {
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string server_name<LM_MAXSTRLEN>;
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netobj fh; /* a counted file handle */
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int pid; /* holder of the lock */
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unsigned l_offset; /* beginning offset of the lock */
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unsigned l_len; /* byte length of the lock;
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* zero means through end of file */
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};
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/*
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* lock holder identifier
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*/
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struct klm_holder {
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bool exclusive; /* FALSE if shared lock */
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int svid; /* holder of the lock (pid) */
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unsigned l_offset; /* beginning offset of the lock */
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unsigned l_len; /* byte length of the lock;
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* zero means through end of file */
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};
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/*
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* reply to KLM_LOCK / KLM_UNLOCK / KLM_CANCEL
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*/
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struct klm_stat {
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klm_stats stat;
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};
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/*
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* reply to a KLM_TEST call
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*/
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union klm_testrply switch (klm_stats stat) {
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case klm_denied:
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struct klm_holder holder;
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default: /* All other cases return no arguments */
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void;
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};
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/*
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* arguments to KLM_LOCK
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*/
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struct klm_lockargs {
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bool block;
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bool exclusive;
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struct klm_lock alock;
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};
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/*
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* arguments to KLM_TEST
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*/
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struct klm_testargs {
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bool exclusive;
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struct klm_lock alock;
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};
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/*
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* arguments to KLM_UNLOCK
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*/
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struct klm_unlockargs {
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struct klm_lock alock;
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};
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program KLM_PROG {
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version KLM_VERS {
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klm_testrply KLM_TEST (struct klm_testargs) = 1;
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klm_stat KLM_LOCK (struct klm_lockargs) = 2;
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klm_stat KLM_CANCEL (struct klm_lockargs) = 3;
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/* klm_granted=> the cancel request fails due to lock is already granted */
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/* klm_denied=> the cancel request successfully aborts
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lock request */
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klm_stat KLM_UNLOCK (struct klm_unlockargs) = 4;
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} = 1;
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} = 100020;
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