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SUNRPC: setup rpcbind clients if service requires it

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New function ("svc_uses_rpcbind") will be used to detect, that new service will
send portmapper register calls. For such services we will create rpcbind
clients and remove all stale portmap registrations.
Also, svc_rpcb_cleanup() will be set as sv_shutdown callback for such services
in case of this field wasn't initialized earlier. This will allow to destroy
rpcbind clients when no other users of them left.

Note: Currently, any creating service will be detected as portmap user.
Probably, this is wrong. But now it depends on program versions "vs_hidden"
flag.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Stanislav Kinsbursky 2011-10-25 14:17:08 +03:00 committed by Trond Myklebust
parent d99085605c
commit e40f5e29ef
1 changed files with 9 additions and 2 deletions
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11
net/sunrpc/svc.c
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@ -454,8 +454,15 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
spin_lock_init(&pool->sp_lock);
}
/* Remove any stale portmap registrations */
svc_unregister(serv);
if (svc_uses_rpcbind(serv)) {
if (svc_rpcb_setup(serv) < 0) {
kfree(serv->sv_pools);
kfree(serv);
return NULL;
}
if (!serv->sv_shutdown)
serv->sv_shutdown = svc_rpcb_cleanup;
}
return serv;
}