From 9cdb9ef7bdfd2f2811d20ff62c34282305ec358a Mon Sep 17 00:00:00 2001 From: Alex Olson Date: Tue, 25 Jun 2013 15:10:48 -0500 Subject: udev: only use devtmpfs for udev Fix for bug: https://bugzilla.yoctoproject.org/show_bug.cgi?id=4632 Since udev 172, the 'mknod' logic was removed from udev. Yocto Dylan is now using udev 182. This means /dev is now required to be a devtmpfs filesystem (maintained by the kernel). If the root filesystem is a ramdisk, the kernel's auto-mount of /dev doesn't activate since there is no rootfs to actually mount... The bug causes an unusable system as /dev doesn't contain even basic nodes required to even get a login prompt. The Yocto udev/init script mounts tmpfs if it does not detect tmpfs or devtmpfs mounted at /dev. This appears to be outdated logic that is no longer correct. I believe the Yocto udev init script should be checking and mounting only 'devtmpfs' on dev. (From OE-Core master rev: 31ab19ab69bc6504df01cac7ee0670ca78d247ab) (From OE-Core rev: dba106b4fc1579185498b85f6e1ade494fcc588e) Signed-off-by: Alex Olson [YOCTO #4632] Signed-off-by: Saul Wold Signed-off-by: Richard Purdie --- meta/recipes-core/udev/udev/init | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'meta/recipes-core') diff --git a/meta/recipes-core/udev/udev/init b/meta/recipes-core/udev/udev/init index cd87f50832..10f9d1a25e 100644 --- a/meta/recipes-core/udev/udev/init +++ b/meta/recipes-core/udev/udev/init @@ -43,9 +43,9 @@ case "$1" in echo "Halting..." halt fi - # mount the tmpfs on /dev, if not already done - LANG=C awk '$2 == "/dev" && ($3 == "tmpfs" || $3 == "devtmpfs") { exit 1 }' /proc/mounts && { - mount -n -o mode=0755 -t tmpfs none "/dev" + # mount the devtmpfs on /dev, if not already done + LANG=C awk '$2 == "/dev" && ($3 == "devtmpfs") { exit 1 }' /proc/mounts && { + mount -n -o mode=0755 -t devtmpfs none "/dev" } [ -e /dev/pts ] || mkdir -m 0755 /dev/pts [ -e /dev/shm ] || mkdir -m 1777 /dev/shm -- cgit v1.2.3-54-g00ecf