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NFSv4 handle port presence in fs_location server string

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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>
This commit is contained in:
Olga Kornievskaia 2021-12-09 14:53:33 -05:00 committed by Anna Schumaker
parent f5b27cc676
commit a8d54baba7
2 changed files with 12 additions and 7 deletions
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2
fs/nfs/nfs4_fs.h
View File

@ -281,7 +281,7 @@ int nfs4_submount(struct fs_context *, struct nfs_server *);
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,

17
fs/nfs/nfs4namespace.c
View File

@ -165,15 +165,20 @@ static int nfs4_validate_fspath(struct dentry *dentry,
}
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_context *fc,
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_location(struct nfs_server *server,
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);