+/*
+ * Using the "new" interfaces for nfsd requires that /proc/fs/nfsd is
+ * actually mounted. Make an attempt to mount it here if it doesn't appear
+ * to be. If the mount attempt fails, no big deal -- fall back to using nfsctl
+ * instead.
+ */
+void
+nfssvc_mount_nfsdfs(char *progname)
+{
+ int err;
+ struct stat statbuf;
+
+ err = stat(NFSD_THREAD_FILE, &statbuf);
+ if (err == 0)
+ return;
+
+ if (errno != ENOENT) {
+ xlog(L_ERROR, "Unable to stat %s: errno %d (%m)",
+ NFSD_THREAD_FILE, errno);
+ return;
+ }
+
+ /*
+ * this call can return an error if modprobe is set up to automatically
+ * mount nfsdfs when nfsd.ko is plugged in. So, ignore the return
+ * code from it and just check for the "threads" file afterward.
+ */
+ system("/bin/mount -t nfsd nfsd " NFSD_FS_DIR " >/dev/null 2>&1");
+
+ err = stat(NFSD_THREAD_FILE, &statbuf);
+ if (err == 0)
+ return;
+
+ xlog(L_WARNING, "Unable to access " NFSD_FS_DIR " errno %d (%m)."
+ "\nPlease try, as root, 'mount -t nfsd nfsd " NFSD_FS_DIR
+ "' and then restart %s to correct the problem", errno, progname);
+
+ return;
+}
+