warn about lack of devtmpfs support

This still works (probably), but is not tested, and I have a feeling that
udev will drop support for this at some point, so we better prepare people.

There is no reason not to enable devtmpfs support (except that it requires a
recompile of course).

Signed-off-by: Tom Gundersen <teg@jklm.no>

1 files changed, 4 insertions, 0 deletions

diff --git a/rc.sysinit b/rc.sysinit
index 5d9a72f..8dd1607 100755
--- a/rc.sysinit
+++ b/rc.sysinit
@@ -40,6 +40,10 @@ if [[ ! -a /usr/lib ]] ; then
   printf "${C_FAIL}/usr is not mounted. This is not supported.${C_OTHER}\n"
 fi
 
+if [[ ! $(grep devtmpfs /proc/filesystems) ]] ; then
+	printf "${C_FAIL}Your kernel does not have devtmpfs support. This is not supported.${C_OTHER}\n"
+fi
+
 HWCLOCK_PARAMS="--systz"
 case $HARDWARECLOCK in
 	"") ;;