Change bootscripts to use devtmpfs for /dev.

Move mounting of /dev to mountvirtfs and ensure /dev gets placed in /etc/mtab. 
Change fstab and kernel configuration sections to reflect these changes.



git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9710 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

3 files changed, 14 insertions, 28 deletions

diff --git a/bootscripts/lfs/init.d/mountfs b/bootscripts/lfs/init.d/mountfs
index 4503836e1..d51b013e5 100644
--- a/bootscripts/lfs/init.d/mountfs
+++ b/bootscripts/lfs/init.d/mountfs
@@ -46,6 +46,7 @@ case "${1}" in
       mount -f /proc || failed=1
       mount -f /sys  || failed=1
       mount -f /run  || failed=1
+      mount -f /dev  || failed=1
       (exit ${failed})
       evaluate_retval
 
diff --git a/bootscripts/lfs/init.d/mountvirtfs b/bootscripts/lfs/init.d/mountvirtfs
index f7f9505a4..6f9df8d14 100644
--- a/bootscripts/lfs/init.d/mountvirtfs
+++ b/bootscripts/lfs/init.d/mountvirtfs
@@ -41,14 +41,25 @@ case "${1}" in
 
       if ! mountpoint /proc >/dev/null; then
          log_info_msg2 " ${INFO}/proc"
-         mount -n /proc || failed=1
+         mount -n -o nosuid,noexec,nodev /proc || failed=1
       fi
 
       if ! mountpoint /sys >/dev/null; then
          log_info_msg2 " ${INFO}/sys" 
-         mount -n /sys || failed=1
+         mount -n -o nosuid,noexec,nodev /sys || failed=1
       fi
 
+      if ! mountpoint /dev >/dev/null; then
+         log_info_msg2 " ${INFO}/dev" 
+         mount -n -o mode=0755,nosuid /dev  || failed=1
+      fi
+
+      ln -s /run/shm /dev/shm
+      
+      # Copy the only static device node that Udev >= 155 doesn't
+      # handle to /dev
+      cp -a /lib/udev/devices/null /dev
+
       (exit ${failed})
       evaluate_retval
       exit $failed
diff --git a/bootscripts/lfs/init.d/udev b/bootscripts/lfs/init.d/udev
index 6b7a79bc6..643ed80dc 100644
--- a/bootscripts/lfs/init.d/udev
+++ b/bootscripts/lfs/init.d/udev
@@ -43,36 +43,10 @@ case "${1}" in
          /etc/rc.d/init.d/halt stop
       fi
 
-      # Mount a temporary file system over /dev, so that any devices
-      # made or removed during this boot don't affect the next one.
-      # The reason we don't write to mtab is because we don't ever
-      # want /dev to be unavailable (such as by `umount -a').
-      if ! mountpoint /dev > /dev/null; then
-         mount -n -t tmpfs tmpfs /dev -o mode=755
-      fi
-
-      if [ ${?} != 0 ]; then
-         log_failure_msg2
-         msg="FAILURE:\n\nCannot mount a tmpfs "
-         msg="${msg}onto /dev, this system will be halted.\n\n"
-         msg="${msg}After you press Enter, this system "
-         msg="${msg}will be halted and powered off.\n\n"
-         log_failure_msg "$msg"
-         log_info_msg "Press Enter to continue..."
-         wait_for_user
-         /etc/rc.d/init.d/halt stop
-      fi
-
-      ln -s /run/shm /dev/shm
-
       # Udev handles uevents itself, so we don't need to have
       # the kernel call out to any binary in response to them
       echo > /proc/sys/kernel/hotplug
 
-      # Copy the only static device node that Udev >= 155 doesn't
-      # handle to /dev
-      cp -a /lib/udev/devices/null /dev
-
       # Start the udev daemon to continually watch for, and act on,
       # uevents
       /sbin/udevd --daemon