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Diffstat (limited to 'REORG.TODO/sunrpc/rpcsvc/klm_prot.x')
| -rw-r--r-- | REORG.TODO/sunrpc/rpcsvc/klm_prot.x | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/REORG.TODO/sunrpc/rpcsvc/klm_prot.x b/REORG.TODO/sunrpc/rpcsvc/klm_prot.x new file mode 100644 index 0000000000..aee5b1a962 --- /dev/null +++ b/REORG.TODO/sunrpc/rpcsvc/klm_prot.x @@ -0,0 +1,130 @@ +/* @(#)klm_prot.x 2.1 88/08/01 4.0 RPCSRC */ + +/* + * Kernel/lock manager protocol definition + * 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. + * + * protocol used between the UNIX kernel (the "client") and the + * local lock manager. The local lock manager is a deamon running + * above the kernel. + */ + +const LM_MAXSTRLEN = 1024; + +/* + * lock manager status returns + */ +enum klm_stats { + klm_granted = 0, /* lock is granted */ + klm_denied = 1, /* lock is denied */ + klm_denied_nolocks = 2, /* no lock entry available */ + klm_working = 3 /* lock is being processed */ +}; + +/* + * lock manager lock identifier + */ +struct klm_lock { + string server_name<LM_MAXSTRLEN>; + netobj fh; /* a counted file handle */ + int pid; /* holder of the lock */ + unsigned l_offset; /* beginning offset of the lock */ + unsigned l_len; /* byte length of the lock; + * zero means through end of file */ +}; + +/* + * lock holder identifier + */ +struct klm_holder { + bool exclusive; /* FALSE if shared lock */ + int svid; /* holder of the lock (pid) */ + unsigned l_offset; /* beginning offset of the lock */ + unsigned l_len; /* byte length of the lock; + * zero means through end of file */ +}; + +/* + * reply to KLM_LOCK / KLM_UNLOCK / KLM_CANCEL + */ +struct klm_stat { + klm_stats stat; +}; + +/* + * reply to a KLM_TEST call + */ +union klm_testrply switch (klm_stats stat) { + case klm_denied: + struct klm_holder holder; + default: /* All other cases return no arguments */ + void; +}; + + +/* + * arguments to KLM_LOCK + */ +struct klm_lockargs { + bool block; + bool exclusive; + struct klm_lock alock; +}; + +/* + * arguments to KLM_TEST + */ +struct klm_testargs { + bool exclusive; + struct klm_lock alock; +}; + +/* + * arguments to KLM_UNLOCK + */ +struct klm_unlockargs { + struct klm_lock alock; +}; + +program KLM_PROG { + version KLM_VERS { + + klm_testrply KLM_TEST (struct klm_testargs) = 1; + + klm_stat KLM_LOCK (struct klm_lockargs) = 2; + + klm_stat KLM_CANCEL (struct klm_lockargs) = 3; + /* klm_granted=> the cancel request fails due to lock is already granted */ + /* klm_denied=> the cancel request successfully aborts +lock request */ + + klm_stat KLM_UNLOCK (struct klm_unlockargs) = 4; + } = 1; +} = 100020; |