1 /* @(#)klm_prot.x 2.1 88/08/01 4.0 RPCSRC */
4 * Kernel/lock manager protocol definition
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34 * protocol used between the UNIX kernel (the "client") and the
35 * local lock manager. The local lock manager is a deamon running
39 const LM_MAXSTRLEN = 1024;
42 * lock manager status returns
45 klm_granted = 0, /* lock is granted */
46 klm_denied = 1, /* lock is denied */
47 klm_denied_nolocks = 2, /* no lock entry available */
48 klm_working = 3 /* lock is being processed */
52 * lock manager lock identifier
55 string server_name<LM_MAXSTRLEN>;
56 netobj fh; /* a counted file handle */
57 int pid; /* holder of the lock */
58 unsigned l_offset; /* beginning offset of the lock */
59 unsigned l_len; /* byte length of the lock;
60 * zero means through end of file */
64 * lock holder identifier
67 bool exclusive; /* FALSE if shared lock */
68 int svid; /* holder of the lock (pid) */
69 unsigned l_offset; /* beginning offset of the lock */
70 unsigned l_len; /* byte length of the lock;
71 * zero means through end of file */
75 * reply to KLM_LOCK / KLM_UNLOCK / KLM_CANCEL
82 * reply to a KLM_TEST call
84 union klm_testrply switch (klm_stats stat) {
86 struct klm_holder holder;
87 default: /* All other cases return no arguments */
93 * arguments to KLM_LOCK
98 struct klm_lock alock;
102 * arguments to KLM_TEST
104 struct klm_testargs {
106 struct klm_lock alock;
110 * arguments to KLM_UNLOCK
112 struct klm_unlockargs {
113 struct klm_lock alock;
119 klm_testrply KLM_TEST (struct klm_testargs) = 1;
121 klm_stat KLM_LOCK (struct klm_lockargs) = 2;
123 klm_stat KLM_CANCEL (struct klm_lockargs) = 3;
124 /* klm_granted=> the cancel request fails due to lock is already granted */
125 /* klm_denied=> the cancel request successfully aborts
128 klm_stat KLM_UNLOCK (struct klm_unlockargs) = 4;