+ /* Make sure that no unsupported volume flags are set. */
+ if (vol->vol_flags & VOLUME_MUST_MOUNT_RO_MASK) {
+ static const char *es1 = "Volume has unsupported flags set";
+ static const char *es2 = ". Run chkdsk and mount in Windows.";
+
+ /* If a read-write mount, convert it to a read-only mount. */
+ if (!(sb->s_flags & MS_RDONLY)) {
+ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO |
+ ON_ERRORS_CONTINUE))) {
+ ntfs_error(sb, "%s and neither on_errors="
+ "continue nor on_errors="
+ "remount-ro was specified%s",
+ es1, es2);
+ goto iput_vol_err_out;
+ }
+ sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ } else
+ ntfs_warning(sb, "%s. Will not be able to remount "
+ "read-write%s", es1, es2);
+ /*
+ * Do not set NVolErrors() because ntfs_remount() re-checks the
+ * flags which we need to do in case any flags have changed.
+ */
+ }