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 mountd client should use an
unprivileged port in this case as well.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfs/internal.h | 1 +
fs/nfs/mount_clnt.c | 4 +++-
fs/nfs/super.c | 1 +
3 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index fa8174c..82d899f 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -72,6 +72,7 @@ struct nfs_mount_request {
u32 version;
unsigned short protocol;
struct nfs_fh *fh;
+ int noresvport;
};
extern int nfs_mount(struct nfs_mount_request *info);
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 7e37113..ca905a5 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -50,7 +50,6 @@ int nfs_mount(struct nfs_mount_request *info)
.program = &mnt_program,
.version = info->version,
.authflavor = RPC_AUTH_UNIX,
- .flags = 0,
};
struct rpc_clnt *mnt_clnt;
int status;
@@ -59,6 +58,9 @@ int nfs_mount(struct nfs_mount_request *info)
(info->hostname ? info->hostname : "server"),
info->dirpath);
+ if (info->noresvport)
+ args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
+
mnt_clnt = rpc_create(&args);
if (IS_ERR(mnt_clnt))
goto out_clnt_err;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 773594f..54ffae3 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1226,6 +1226,7 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
.dirpath = args->nfs_server.export_path,
.protocol = args->mount_server.protocol,
.fh = root_fh,
+ .noresvport = args->flags & NFS_MOUNT_NORESVPORT,
};
int status;
--
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