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28f540f4 | 1 | /* |
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2 | * Status monitor protocol specification |
3 | * Copyright (c) 2010, Oracle America, Inc. | |
28f540f4 | 4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are | |
7 | * met: | |
ab09b221 | 8 | * |
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9 | * * Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * * Redistributions in binary form must reproduce the above | |
12 | * copyright notice, this list of conditions and the following | |
13 | * disclaimer in the documentation and/or other materials | |
14 | * provided with the distribution. | |
15 | * * Neither the name of the "Oracle America, Inc." nor the names of its | |
16 | * contributors may be used to endorse or promote products derived | |
17 | * from this software without specific prior written permission. | |
ab09b221 | 18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
22 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
23 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
24 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
26 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
28 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
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31 | */ |
32 | ||
33 | ||
6d52618b | 34 | program SM_PROG { |
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35 | version SM_VERS { |
36 | /* res_stat = stat_succ if status monitor agrees to monitor */ | |
37 | /* res_stat = stat_fail if status monitor cannot monitor */ | |
38 | /* if res_stat == stat_succ, state = state number of site sm_name */ | |
39 | struct sm_stat_res SM_STAT(struct sm_name) = 1; | |
40 | ||
41 | /* res_stat = stat_succ if status monitor agrees to monitor */ | |
42 | /* res_stat = stat_fail if status monitor cannot monitor */ | |
43 | /* stat consists of state number of local site */ | |
44 | struct sm_stat_res SM_MON(struct mon) = 2; | |
45 | ||
46 | /* stat consists of state number of local site */ | |
47 | struct sm_stat SM_UNMON(struct mon_id) = 3; | |
48 | ||
49 | /* stat consists of state number of local site */ | |
50 | struct sm_stat SM_UNMON_ALL(struct my_id) = 4; | |
51 | ||
52 | void SM_SIMU_CRASH(void) = 5; | |
53 | ||
54 | } = 1; | |
55 | } = 100024; | |
56 | ||
57 | const SM_MAXSTRLEN = 1024; | |
58 | ||
59 | struct sm_name { | |
60 | string mon_name<SM_MAXSTRLEN>; | |
61 | }; | |
62 | ||
63 | struct my_id { | |
5b826692 | 64 | string my_name<SM_MAXSTRLEN>; /* name of the site initiating the monitoring request*/ |
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65 | int my_prog; /* rpc program # of the requesting process */ |
66 | int my_vers; /* rpc version # of the requesting process */ | |
67 | int my_proc; /* rpc procedure # of the requesting process */ | |
68 | }; | |
69 | ||
70 | struct mon_id { | |
71 | string mon_name<SM_MAXSTRLEN>; /* name of the site to be monitored */ | |
72 | struct my_id my_id; | |
73 | }; | |
74 | ||
75 | ||
76 | struct mon{ | |
77 | struct mon_id mon_id; | |
78 | opaque priv[16]; /* private information to store at monitor for requesting process */ | |
79 | }; | |
80 | ||
81 | ||
82 | /* | |
6d52618b | 83 | * state # of status monitor monotonically increases each time |
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84 | * status of the site changes: |
85 | * an even number (>= 0) indicates the site is down and | |
86 | * an odd number (> 0) indicates the site is up; | |
87 | */ | |
88 | struct sm_stat { | |
89 | int state; /* state # of status monitor */ | |
90 | }; | |
91 | ||
92 | enum res { | |
93 | stat_succ = 0, /* status monitor agrees to monitor */ | |
94 | stat_fail = 1 /* status monitor cannot monitor */ | |
95 | }; | |
96 | ||
97 | struct sm_stat_res { | |
98 | res res_stat; | |
99 | int state; | |
100 | }; | |
101 | ||
6d52618b | 102 | /* |
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103 | * structure of the status message sent back by the status monitor |
104 | * when monitor site status changes | |
105 | */ | |
106 | struct status { | |
107 | string mon_name<SM_MAXSTRLEN>; | |
108 | int state; | |
109 | opaque priv[16]; /* stored private information */ | |
110 | }; |