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lockd: Adjust nlmsvc_lookup_host() to accomodate AF_INET6 addresses

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Fix up nlmsvc_lookup_host() to pass AF_INET6 source addresses to
nlm_lookup_host().

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Chuck Lever 2008-10-03 12:50:29 -04:00 committed by J. Bruce Fields
parent d7d204403b
commit 6bfbe8af46
2 changed files with 41 additions and 11 deletions
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47
fs/lockd/host.c
View File

@ -304,16 +304,33 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
return nlm_lookup_host(&ni);
}
/*
* Find an NLM client handle in the cache. If there is none, create it.
/**
* nlmsvc_lookup_host - Find an NLM host handle matching a remote client
* @rqstp: incoming NLM request
* @hostname: name of client host
* @hostname_len: length of client hostname
*
* Returns an nlm_host structure that matches the [client address,
* transport protocol, NLM version, client hostname] of the passed-in
* NLM request. If one doesn't already exist in the host cache, a
* new handle is created and returned.
*
* Before possibly creating a new nlm_host, construct a sockaddr
* for a specific source address in case the local system has
* multiple network addresses. The family of the address in
* rq_daddr is guaranteed to be the same as the family of the
* address in rq_addr, so it's safe to use the same family for
* the source address.
*/
struct nlm_host *
nlmsvc_lookup_host(struct svc_rqst *rqstp,
const char *hostname, unsigned int hostname_len)
struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
const char *hostname,
const size_t hostname_len)
{
const struct sockaddr_in source = {
struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_addr = rqstp->rq_daddr.addr,
};
struct sockaddr_in6 sin6 = {
.sin6_family = AF_INET6,
};
struct nlm_lookup_host_info ni = {
.server = 1,
@ -323,14 +340,26 @@ nlmsvc_lookup_host(struct svc_rqst *rqstp,
.version = rqstp->rq_vers,
.hostname = hostname,
.hostname_len = hostname_len,
.src_sap = (struct sockaddr *)&source,
.src_len = sizeof(source),
.src_len = rqstp->rq_addrlen,
};
dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__,
(int)hostname_len, hostname, rqstp->rq_vers,
(rqstp->rq_prot == IPPROTO_UDP ? "udp" : "tcp"));
switch (ni.sap->sa_family) {
case AF_INET:
sin.sin_addr.s_addr = rqstp->rq_daddr.addr.s_addr;
ni.src_sap = (struct sockaddr *)&sin;
break;
case AF_INET6:
ipv6_addr_copy(&sin6.sin6_addr, &rqstp->rq_daddr.addr6);
ni.src_sap = (struct sockaddr *)&sin6;
break;
default:
return NULL;
}
return nlm_lookup_host(&ni);
}

5
include/linux/lockd/lockd.h
View File

@ -220,8 +220,9 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
const unsigned short protocol,
const u32 version,
const char *hostname);
struct nlm_host *nlmsvc_lookup_host(struct svc_rqst *, const char *,
unsigned int);
struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
const char *hostname,
const size_t hostname_len);
struct rpc_clnt * nlm_bind_host(struct nlm_host *);
void nlm_rebind_host(struct nlm_host *);
struct nlm_host * nlm_get_host(struct nlm_host *);