Add additional check on /dev/nvram to avoid misleading error message

[yaboot.git] / ybin / ybin

diff --git a/ybin/ybin b/ybin/ybin
index 30d369537e6c813340a1e1b90ae0e9cadf28f848..029c868a83be178f55e194e21ff647275c9c8519 100755 (executable)
--- a/ybin/ybin
+++ b/ybin/ybin
@@ -28,7 +28,7 @@ if [ -n "$PATH_PREFIX" ] ; then
 fi
 PRG="${0##*/}"
 SIGINT="$PRG: Interrupt caught ... exiting"
-VERSION=1.3.12-UNRELEASED_UNSUPPORTED_DEVELOPMENT_VERSION
+VERSION=1.3.12
 DEBUG=0
 VERBOSE=0
 TMP="${TMPDIR:-/tmp}"
@@ -462,6 +462,10 @@ checkconf()
                    echo 1>&2 "$PRG: /dev/nvram: Permission denied"
                    echo 1>&2 "$PRG: Warning: nvram will not be updated"
                    nonvram=1
+               elif ! (dd if=/dev/nvram of=/dev/null bs=1 count=10 > /dev/null 2>&1) ; then
+                   echo 1>&2 "$PRG: /dev/nvram: No such device"
+                   echo 1>&2 "$PRG: Warning: nvram will not be updated"
+                   nonvram=1
                else
                    nonvram=1
                    echo 1>&2 "$PRG: Warning: Incompatible version of \`nvsetenv', nvram will not be updated"