From: Olga Kornievskaia <kolga@netapp.com>
Date: Thu, 9 Dec 2021 14:53:33 -0500
Subject: [PATCH] NFSv4 handle port presence in fs_location server string
Git-commit: a8d54baba7c65db2d3278873def61f8d3753d766
Patch-mainline: v5.17
References: git-fixes
An fs_location attribute returns a string that can be ipv4, ipv6,
or DNS name. An ip location can have a port appended to it and if
no port is present a default port needs to be set. If rpc_pton()
fails to parse, try calling rpc_uaddr2socaddr() that can convert
an universal address.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Acked-by: NeilBrown <neilb@suse.com>
---
fs/nfs/nfs4_fs.h | 2 +-
fs/nfs/nfs4namespace.c | 17 +++++++++++------
2 files changed, 12 insertions(+), 7 deletions(-)
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -282,7 +282,7 @@ int nfs4_submount(struct fs_context *, s
int nfs4_replace_transport(struct nfs_server *server,
const struct nfs4_fs_locations *locations);
size_t nfs_parse_server_name(char *string, size_t len, struct sockaddr *sa,
- size_t salen, struct net *net);
+ size_t salen, struct net *net, int port);
/* nfs4proc.c */
extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *);
extern int nfs4_async_handle_error(struct rpc_task *task,
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -165,15 +165,20 @@ static int nfs4_validate_fspath(struct d
}
size_t nfs_parse_server_name(char *string, size_t len, struct sockaddr *sa,
- size_t salen, struct net *net)
+ size_t salen, struct net *net, int port)
{
ssize_t ret;
ret = rpc_pton(net, string, len, sa, salen);
if (ret == 0) {
- ret = nfs_dns_resolve_name(net, string, len, sa, salen);
- if (ret < 0)
- ret = 0;
+ ret = rpc_uaddr2sockaddr(net, string, len, sa, salen);
+ if (ret == 0) {
+ ret = nfs_dns_resolve_name(net, string, len, sa, salen);
+ if (ret < 0)
+ ret = 0;
+ }
+ } else if (port) {
+ rpc_set_port(sa, port);
}
return ret;
}
@@ -328,7 +333,7 @@ static int try_location(struct fs_contex
nfs_parse_server_name(buf->data, buf->len,
&ctx->nfs_server.address,
sizeof(ctx->nfs_server._address),
- fc->net_ns);
+ fc->net_ns, 0);
if (ctx->nfs_server.addrlen == 0)
continue;
@@ -496,7 +501,7 @@ static int nfs4_try_replacing_one_locati
continue;
salen = nfs_parse_server_name(buf->data, buf->len,
- sap, addr_bufsize, net);
+ sap, addr_bufsize, net, 0);
if (salen == 0)
continue;
rpc_set_port(sap, NFS_PORT);