/*
* Local NSM state
*/
-u32 nsm_local_state;
+int nsm_local_state;
/*
* Common procedure for SM_MON/SM_UNMON calls
*/
static int
-nsm_mon_unmon(struct nlm_host *host, u32 proc, struct nsm_res *res)
+nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
{
struct rpc_clnt *clnt;
int status;
struct nsm_args args;
+ struct rpc_message msg = {
+ .rpc_argp = &args,
+ .rpc_resp = res,
+ };
clnt = nsm_create();
if (IS_ERR(clnt)) {
goto out;
}
- args.addr = host->h_addr.sin_addr.s_addr;
- args.proto= (host->h_proto<<1) | host->h_server;
+ memset(&args, 0, sizeof(args));
+ args.mon_name = nsm->sm_name;
+ args.addr = nsm->sm_addr.sin_addr.s_addr;
args.prog = NLM_PROGRAM;
- args.vers = host->h_version;
+ args.vers = 3;
args.proc = NLMPROC_NSM_NOTIFY;
memset(res, 0, sizeof(*res));
- status = rpc_call(clnt, proc, &args, res, 0);
+ msg.rpc_proc = &clnt->cl_procinfo[proc];
+ status = rpc_call_sync(clnt, &msg, 0);
if (status < 0)
printk(KERN_DEBUG "nsm_mon_unmon: rpc failed, status=%d\n",
status);
int
nsm_monitor(struct nlm_host *host)
{
+ struct nsm_handle *nsm = host->h_nsmhandle;
struct nsm_res res;
int status;
dprintk("lockd: nsm_monitor(%s)\n", host->h_name);
+ BUG_ON(nsm == NULL);
- status = nsm_mon_unmon(host, SM_MON, &res);
+ if (nsm->sm_monitored)
+ return 0;
+
+ status = nsm_mon_unmon(nsm, SM_MON, &res);
if (status < 0 || res.status != 0)
printk(KERN_NOTICE "lockd: cannot monitor %s\n", host->h_name);
else
- host->h_monitored = 1;
+ nsm->sm_monitored = 1;
return status;
}
int
nsm_unmonitor(struct nlm_host *host)
{
+ struct nsm_handle *nsm = host->h_nsmhandle;
struct nsm_res res;
- int status;
-
- dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name);
-
- status = nsm_mon_unmon(host, SM_UNMON, &res);
- if (status < 0)
- printk(KERN_NOTICE "lockd: cannot unmonitor %s\n", host->h_name);
- else
- host->h_monitored = 0;
+ int status = 0;
+
+ if (nsm == NULL)
+ return 0;
+ host->h_nsmhandle = NULL;
+
+ if (atomic_read(&nsm->sm_count) == 1
+ && nsm->sm_monitored && !nsm->sm_sticky) {
+ dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name);
+
+ status = nsm_mon_unmon(nsm, SM_UNMON, &res);
+ if (status < 0)
+ printk(KERN_NOTICE "lockd: cannot unmonitor %s\n",
+ host->h_name);
+ else
+ nsm->sm_monitored = 0;
+ }
+ nsm_release(nsm);
return status;
}
static struct rpc_clnt *
nsm_create(void)
{
- struct rpc_xprt *xprt;
- struct rpc_clnt *clnt;
- struct sockaddr_in sin;
-
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
- sin.sin_port = 0;
-
- xprt = xprt_create_proto(IPPROTO_UDP, &sin, NULL);
- if (IS_ERR(xprt))
- return (struct rpc_clnt *)xprt;
- xprt->resvport = 1; /* NSM requires a reserved port */
-
- clnt = rpc_create_client(xprt, "localhost",
- &nsm_program, SM_VERSION,
- RPC_AUTH_NULL);
- if (IS_ERR(clnt))
- goto out_err;
- clnt->cl_softrtry = 1;
- clnt->cl_oneshot = 1;
- return clnt;
-
-out_err:
- return clnt;
+ struct sockaddr_in sin = {
+ .sin_family = AF_INET,
+ .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
+ .sin_port = 0,
+ };
+ struct rpc_create_args args = {
+ .protocol = IPPROTO_UDP,
+ .address = (struct sockaddr *)&sin,
+ .addrsize = sizeof(sin),
+ .servername = "localhost",
+ .program = &nsm_program,
+ .version = SM_VERSION,
+ .authflavor = RPC_AUTH_NULL,
+ .flags = (RPC_CLNT_CREATE_ONESHOT),
+ };
+
+ return rpc_create(&args);
}
/*
* XDR functions for NSM.
*/
-static u32 *
-xdr_encode_common(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
+static __be32 *
+xdr_encode_common(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
- char buffer[20];
+ char buffer[20], *name;
/*
* Use the dotted-quad IP address of the remote host as
* hostname first for whatever remote hostname it receives,
* so this works alright.
*/
- sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(argp->addr));
- if (!(p = xdr_encode_string(p, buffer))
- || !(p = xdr_encode_string(p, system_utsname.nodename)))
+ if (nsm_use_hostnames) {
+ name = argp->mon_name;
+ } else {
+ sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(argp->addr));
+ name = buffer;
+ }
+ if (!(p = xdr_encode_string(p, name))
+ || !(p = xdr_encode_string(p, utsname()->nodename)))
return ERR_PTR(-EIO);
*p++ = htonl(argp->prog);
*p++ = htonl(argp->vers);
}
static int
-xdr_encode_mon(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
+xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
p = xdr_encode_common(rqstp, p, argp);
if (IS_ERR(p))
return PTR_ERR(p);
+
+ /* Surprise - there may even be room for an IPv6 address now */
*p++ = argp->addr;
- *p++ = argp->vers;
- *p++ = argp->proto;
+ *p++ = 0;
+ *p++ = 0;
*p++ = 0;
rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
return 0;
}
static int
-xdr_encode_unmon(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
+xdr_encode_unmon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
p = xdr_encode_common(rqstp, p, argp);
if (IS_ERR(p))
}
static int
-xdr_decode_stat_res(struct rpc_rqst *rqstp, u32 *p, struct nsm_res *resp)
+xdr_decode_stat_res(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
{
resp->status = ntohl(*p++);
resp->state = ntohl(*p++);
}
static int
-xdr_decode_stat(struct rpc_rqst *rqstp, u32 *p, struct nsm_res *resp)
+xdr_decode_stat(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
{
resp->state = ntohl(*p++);
return 0;
.p_encode = (kxdrproc_t) xdr_encode_mon,
.p_decode = (kxdrproc_t) xdr_decode_stat_res,
.p_bufsiz = MAX(SM_mon_sz, SM_monres_sz) << 2,
+ .p_statidx = SM_MON,
+ .p_name = "MONITOR",
},
[SM_UNMON] = {
.p_proc = SM_UNMON,
.p_encode = (kxdrproc_t) xdr_encode_unmon,
.p_decode = (kxdrproc_t) xdr_decode_stat,
.p_bufsiz = MAX(SM_mon_id_sz, SM_unmonres_sz) << 2,
+ .p_statidx = SM_UNMON,
+ .p_name = "UNMONITOR",
},
};
static struct rpc_version nsm_version1 = {
- .number = 1,
- .nrprocs = sizeof(nsm_procedures)/sizeof(nsm_procedures[0]),
+ .number = 1,
+ .nrprocs = ARRAY_SIZE(nsm_procedures),
.procs = nsm_procedures
};
static struct rpc_program nsm_program = {
.name = "statd",
.number = SM_PROGRAM,
- .nrvers = sizeof(nsm_version)/sizeof(nsm_version[0]),
+ .nrvers = ARRAY_SIZE(nsm_version),
.version = nsm_version,
.stats = &nsm_stats
};
git://git.onelab.eu / linux-2.6.git / blobdiff