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dfdcada31e
user-mode lock manager, build a kernel with the NFSLOCKD option and add '-k' to 'rpc_lockd_flags' in rc.conf. Highlights include: * Thread-safe kernel RPC client - many threads can use the same RPC client handle safely with replies being de-multiplexed at the socket upcall (typically driven directly by the NIC interrupt) and handed off to whichever thread matches the reply. For UDP sockets, many RPC clients can share the same socket. This allows the use of a single privileged UDP port number to talk to an arbitrary number of remote hosts. * Single-threaded kernel RPC server. Adding support for multi-threaded server would be relatively straightforward and would follow approximately the Solaris KPI. A single thread should be sufficient for the NLM since it should rarely block in normal operation. * Kernel mode NLM server supporting cancel requests and granted callbacks. I've tested the NLM server reasonably extensively - it passes both my own tests and the NFS Connectathon locking tests running on Solaris, Mac OS X and Ubuntu Linux. * Userland NLM client supported. While the NLM server doesn't have support for the local NFS client's locking needs, it does have to field async replies and granted callbacks from remote NLMs that the local client has contacted. We relay these replies to the userland rpc.lockd over a local domain RPC socket. * Robust deadlock detection for the local lock manager. In particular it will detect deadlocks caused by a lock request that covers more than one blocking request. As required by the NLM protocol, all deadlock detection happens synchronously - a user is guaranteed that if a lock request isn't rejected immediately, the lock will eventually be granted. The old system allowed for a 'deferred deadlock' condition where a blocked lock request could wake up and find that some other deadlock-causing lock owner had beaten them to the lock. * Since both local and remote locks are managed by the same kernel locking code, local and remote processes can safely use file locks for mutual exclusion. Local processes have no fairness advantage compared to remote processes when contending to lock a region that has just been unlocked - the local lock manager enforces a strict first-come first-served model for both local and remote lockers. Sponsored by: Isilon Systems PR: 95247 107555 115524 116679 MFC after: 2 weeks
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
/*
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* Please do not edit this file.
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* It was generated using rpcgen.
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*/
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/* $FreeBSD$ */
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#ifndef _SM_INTER_H_RPCGEN
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#define _SM_INTER_H_RPCGEN
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#include <rpc/rpc.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SM_MAXSTRLEN 1024
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struct sm_name {
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char *mon_name;
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};
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typedef struct sm_name sm_name;
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struct my_id {
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char *my_name;
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int my_prog;
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int my_vers;
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int my_proc;
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};
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typedef struct my_id my_id;
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struct mon_id {
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char *mon_name;
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struct my_id my_id;
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};
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typedef struct mon_id mon_id;
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struct mon {
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struct mon_id mon_id;
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char priv[16];
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};
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typedef struct mon mon;
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struct stat_chge {
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char *mon_name;
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int state;
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};
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typedef struct stat_chge stat_chge;
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struct sm_stat {
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int state;
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};
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typedef struct sm_stat sm_stat;
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enum sm_res {
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stat_succ = 0,
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stat_fail = 1
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};
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typedef enum sm_res sm_res;
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struct sm_stat_res {
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sm_res res_stat;
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int state;
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};
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typedef struct sm_stat_res sm_stat_res;
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struct sm_status {
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char *mon_name;
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int state;
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char priv[16];
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};
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typedef struct sm_status sm_status;
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#define SM_PROG ((unsigned long)(100024))
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#define SM_VERS ((unsigned long)(1))
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extern void sm_prog_1(struct svc_req *rqstp, SVCXPRT *transp);
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#define SM_STAT ((unsigned long)(1))
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extern struct sm_stat_res * sm_stat_1(struct sm_name *, CLIENT *);
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extern struct sm_stat_res * sm_stat_1_svc(struct sm_name *, struct svc_req *);
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#define SM_MON ((unsigned long)(2))
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extern struct sm_stat_res * sm_mon_1(struct mon *, CLIENT *);
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extern struct sm_stat_res * sm_mon_1_svc(struct mon *, struct svc_req *);
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#define SM_UNMON ((unsigned long)(3))
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extern struct sm_stat * sm_unmon_1(struct mon_id *, CLIENT *);
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extern struct sm_stat * sm_unmon_1_svc(struct mon_id *, struct svc_req *);
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#define SM_UNMON_ALL ((unsigned long)(4))
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extern struct sm_stat * sm_unmon_all_1(struct my_id *, CLIENT *);
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extern struct sm_stat * sm_unmon_all_1_svc(struct my_id *, struct svc_req *);
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#define SM_SIMU_CRASH ((unsigned long)(5))
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extern void * sm_simu_crash_1(void *, CLIENT *);
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extern void * sm_simu_crash_1_svc(void *, struct svc_req *);
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#define SM_NOTIFY ((unsigned long)(6))
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extern void * sm_notify_1(struct stat_chge *, CLIENT *);
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extern void * sm_notify_1_svc(struct stat_chge *, struct svc_req *);
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extern int sm_prog_1_freeresult(SVCXPRT *, xdrproc_t, caddr_t);
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/* the xdr functions */
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extern bool_t xdr_sm_name(XDR *, sm_name*);
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extern bool_t xdr_my_id(XDR *, my_id*);
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extern bool_t xdr_mon_id(XDR *, mon_id*);
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extern bool_t xdr_mon(XDR *, mon*);
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extern bool_t xdr_stat_chge(XDR *, stat_chge*);
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extern bool_t xdr_sm_stat(XDR *, sm_stat*);
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extern bool_t xdr_sm_res(XDR *, sm_res*);
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extern bool_t xdr_sm_stat_res(XDR *, sm_stat_res*);
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extern bool_t xdr_sm_status(XDR *, sm_status*);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !_SM_INTER_H_RPCGEN */
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