aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorChuck Lever <chuck.lever@oracle.com>2008-12-23 15:21:38 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-23 15:21:38 -0500
commit0cb2659b818eca99235e17c04291cfa9985c14f7 (patch)
tree48fc176e1e1e8a6f771e664799c26df1d72e9f69
parent50a737f86dbf99daf3a8dcbdf778a3be36bb2a39 (diff)
NLM: allow lockd requests from an unprivileged port
If the admin has specified the "noresvport" option for an NFS mount point, the kernel's NFS client uses an unprivileged source port for the main NFS transport. The kernel's lockd client should use an unprivileged port in this case as well. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--fs/lockd/clntlock.c2
-rw-r--r--fs/lockd/host.c10
-rw-r--r--fs/nfs/client.c2
-rw-r--r--include/linux/lockd/bind.h1
-rw-r--r--include/linux/lockd/lockd.h4
5 files changed, 16 insertions, 3 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 94d42cc4e39..1f3b0fc0d35 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -61,7 +61,7 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
host = nlmclnt_lookup_host(nlm_init->address, nlm_init->addrlen,
nlm_init->protocol, nlm_version,
- nlm_init->hostname);
+ nlm_init->hostname, nlm_init->noresvport);
if (host == NULL) {
lockd_down();
return ERR_PTR(-ENOLCK);
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 70fc63a1727..acc2aa5021d 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -48,6 +48,7 @@ struct nlm_lookup_host_info {
const size_t hostname_len; /* it's length */
const struct sockaddr *src_sap; /* our address (optional) */
const size_t src_len; /* it's length */
+ const int noresvport; /* use non-priv port */
};
/*
@@ -222,6 +223,7 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni)
host->h_nsmstate = 0; /* real NSM state */
host->h_nsmhandle = nsm;
host->h_server = ni->server;
+ host->h_noresvport = ni->noresvport;
hlist_add_head(&host->h_hash, chain);
INIT_LIST_HEAD(&host->h_lockowners);
spin_lock_init(&host->h_lock);
@@ -272,6 +274,7 @@ nlm_destroy_host(struct nlm_host *host)
* @protocol: transport protocol to use
* @version: NLM protocol version
* @hostname: '\0'-terminated hostname of server
+ * @noresvport: 1 if non-privileged port should be used
*
* Returns an nlm_host structure that matches the passed-in
* [server address, transport protocol, NLM version, server hostname].
@@ -281,7 +284,9 @@ nlm_destroy_host(struct nlm_host *host)
struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
const size_t salen,
const unsigned short protocol,
- const u32 version, const char *hostname)
+ const u32 version,
+ const char *hostname,
+ int noresvport)
{
const struct sockaddr source = {
.sa_family = AF_UNSPEC,
@@ -296,6 +301,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
.hostname_len = strlen(hostname),
.src_sap = &source,
.src_len = sizeof(source),
+ .noresvport = noresvport,
};
dprintk("lockd: %s(host='%s', vers=%u, proto=%s)\n", __func__,
@@ -417,6 +423,8 @@ nlm_bind_host(struct nlm_host *host)
*/
if (!host->h_server)
args.flags |= RPC_CLNT_CREATE_HARDRTRY;
+ if (host->h_noresvport)
+ args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
clnt = rpc_create(&args);
if (!IS_ERR(clnt))
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 3a69cacc4fa..70b6d9e8517 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -526,6 +526,8 @@ static int nfs_start_lockd(struct nfs_server *server)
.protocol = server->flags & NFS_MOUNT_TCP ?
IPPROTO_TCP : IPPROTO_UDP,
.nfs_version = clp->rpc_ops->version,
+ .noresvport = server->flags & NFS_MOUNT_NORESVPORT ?
+ 1 : 0,
};
if (nlm_init.nfs_version > 3)
diff --git a/include/linux/lockd/bind.h b/include/linux/lockd/bind.h
index e5872dc994c..fbc48f89852 100644
--- a/include/linux/lockd/bind.h
+++ b/include/linux/lockd/bind.h
@@ -41,6 +41,7 @@ struct nlmclnt_initdata {
size_t addrlen;
unsigned short protocol;
u32 nfs_version;
+ int noresvport;
};
/*
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index b56d5aa9b19..23da3fa69ef 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -49,6 +49,7 @@ struct nlm_host {
unsigned short h_proto; /* transport proto */
unsigned short h_reclaiming : 1,
h_server : 1, /* server side, not client side */
+ h_noresvport : 1,
h_inuse : 1;
wait_queue_head_t h_gracewait; /* wait while reclaiming */
struct rw_semaphore h_rwsem; /* Reboot recovery lock */
@@ -220,7 +221,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
const size_t salen,
const unsigned short protocol,
const u32 version,
- const char *hostname);
+ const char *hostname,
+ int noresvport);
struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
const char *hostname,
const size_t hostname_len);