1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 */ 29 30 /* 31 * Kernel/lock manager protocol definition 32 * Copyright (C) 1986 Sun Microsystems, Inc. 33 * 34 * protocol used between the UNIX kernel (the "client") and the 35 * local lock manager. The local lock manager is a deamon running 36 * above the kernel. 37 */ 38 39 #ifndef RPC_HDR 40 %#ifndef lint 41 %/*static char sccsid[] = "from: @(#)klm_prot.x 1.7 87/07/08 Copyr 1987 Sun Micro";*/ 42 %/*static char sccsid[] = "from: @(#)klm_prot.x 2.1 88/08/01 4.0 RPCSRC";*/ 43 %static char rcsid[] = "$Id: klm_prot.x,v 1.1 1993/09/14 17:42:42 jtc Exp $"; 44 %#endif /* not lint */ 45 #endif 46 47 const LM_MAXSTRLEN = 1024; 48 49 /* 50 * lock manager status returns 51 */ 52 enum klm_stats { 53 klm_granted = 0, /* lock is granted */ 54 klm_denied = 1, /* lock is denied */ 55 klm_denied_nolocks = 2, /* no lock entry available */ 56 klm_working = 3 /* lock is being processed */ 57 }; 58 59 /* 60 * lock manager lock identifier 61 */ 62 struct klm_lock { 63 string server_name<LM_MAXSTRLEN>; 64 netobj fh; /* a counted file handle */ 65 int pid; /* holder of the lock */ 66 unsigned l_offset; /* beginning offset of the lock */ 67 unsigned l_len; /* byte length of the lock; 68 * zero means through end of file */ 69 }; 70 71 /* 72 * lock holder identifier 73 */ 74 struct klm_holder { 75 bool exclusive; /* FALSE if shared lock */ 76 int svid; /* holder of the lock (pid) */ 77 unsigned l_offset; /* beginning offset of the lock */ 78 unsigned l_len; /* byte length of the lock; 79 * zero means through end of file */ 80 }; 81 82 /* 83 * reply to KLM_LOCK / KLM_UNLOCK / KLM_CANCEL 84 */ 85 struct klm_stat { 86 klm_stats stat; 87 }; 88 89 /* 90 * reply to a KLM_TEST call 91 */ 92 union klm_testrply switch (klm_stats stat) { 93 case klm_denied: 94 struct klm_holder holder; 95 default: /* All other cases return no arguments */ 96 void; 97 }; 98 99 100 /* 101 * arguments to KLM_LOCK 102 */ 103 struct klm_lockargs { 104 bool block; 105 bool exclusive; 106 struct klm_lock alock; 107 }; 108 109 /* 110 * arguments to KLM_TEST 111 */ 112 struct klm_testargs { 113 bool exclusive; 114 struct klm_lock alock; 115 }; 116 117 /* 118 * arguments to KLM_UNLOCK 119 */ 120 struct klm_unlockargs { 121 struct klm_lock alock; 122 }; 123 124 program KLM_PROG { 125 version KLM_VERS { 126 127 klm_testrply KLM_TEST (struct klm_testargs) = 1; 128 129 klm_stat KLM_LOCK (struct klm_lockargs) = 2; 130 131 klm_stat KLM_CANCEL (struct klm_lockargs) = 3; 132 /* klm_granted=> the cancel request fails due to lock is already granted */ 133 /* klm_denied=> the cancel request successfully aborts 134 lock request */ 135 136 klm_stat KLM_UNLOCK (struct klm_unlockargs) = 4; 137 } = 1; 138 } = 100020; 139