home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
NeXTSTEP 3.0
/
NeXTSTEP3.0.iso
/
NextDeveloper
/
Headers
/
bsd
/
rpcsvc
/
klm_prot.x
< prev
next >
Wrap
Text File
|
1990-01-29
|
2KB
|
92 lines
/* @(#)klm_prot.x 1.3 88/05/26 4.0NFSSRC SMI */
/*
* Copyright (c) 1988 by Sun Microsystems, Inc.
* @(#) from SUN 1.9
*/
/*
* Kernel/lock manager protocol definition
* Copyright (C) 1986 Sun Microsystems, Inc.
*
* 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 @ULM_TEST
*/
struct klm_testargs {
bool exclusive;
struct klm_lock alock;
};
/*
* arguments to KLM_UNLOCK
*/
struct klm_unlockargs {
struct klm_lock alock;
};