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/* * Status monitor protocol specification * Copyright (c) 2010, Oracle America, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * Neither the name of the "Oracle America, Inc." nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ program SM_PROG { version SM_VERS { /* res_stat = stat_succ if status monitor agrees to monitor */ /* res_stat = stat_fail if status monitor cannot monitor */ /* if res_stat == stat_succ, state = state number of site sm_name */ struct sm_stat_res SM_STAT(struct sm_name) = 1; /* res_stat = stat_succ if status monitor agrees to monitor */ /* res_stat = stat_fail if status monitor cannot monitor */ /* stat consists of state number of local site */ struct sm_stat_res SM_MON(struct mon) = 2; /* stat consists of state number of local site */ struct sm_stat SM_UNMON(struct mon_id) = 3; /* stat consists of state number of local site */ struct sm_stat SM_UNMON_ALL(struct my_id) = 4; void SM_SIMU_CRASH(void) = 5; } = 1; } = 100024; const SM_MAXSTRLEN = 1024; struct sm_name { string mon_name<SM_MAXSTRLEN>; }; struct my_id { string my_name<SM_MAXSTRLEN>; /* name of the site initiating the monitoring request*/ int my_prog; /* rpc program # of the requesting process */ int my_vers; /* rpc version # of the requesting process */ int my_proc; /* rpc procedure # of the requesting process */ }; struct mon_id { string mon_name<SM_MAXSTRLEN>; /* name of the site to be monitored */ struct my_id my_id; }; struct mon{ struct mon_id mon_id; opaque priv[16]; /* private information to store at monitor for requesting process */ }; /* * state # of status monitor monotonically increases each time * status of the site changes: * an even number (>= 0) indicates the site is down and * an odd number (> 0) indicates the site is up; */ struct sm_stat { int state; /* state # of status monitor */ }; enum res { stat_succ = 0, /* status monitor agrees to monitor */ stat_fail = 1 /* status monitor cannot monitor */ }; struct sm_stat_res { res res_stat; int state; }; /* * structure of the status message sent back by the status monitor * when monitor site status changes */ struct status { string mon_name<SM_MAXSTRLEN>; int state; opaque priv[16]; /* stored private information */ };