fix busybox unpriv

1. tty5 is not needed 2. the devices should be optional in case they didn't exist in the host / parent-container 3. switch from 'touch $rootfs/dev/$dev' to using create=file in the mount entry. Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

fix busybox unpriv
191b612f · Serge Hallyn · Stéphane Graber · 388db0d9 · 191b612f
Commit 191b612f authored Jan 27, 2015 by Serge Hallyn Committed by Stéphane Graber Jan 30, 2015
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lxc-busybox.in templates/lxc-busybox.in +2 -3

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--- a/templates/lxc-busybox.in
+++ b/templates/lxc-busybox.in
@@ -73,9 +73,8 @@ $rootfs/usr/lib64"

    # minimal devices needed for busybox
    if [ $in_userns -eq 1 ]; then
-        for dev in tty console tty0 tty1 tty5 ram0 null urandom; do
-            touch $rootfs/dev/$dev
-            echo "/dev/$dev dev/$dev    none bind 0 0" >> $path/fstab
+        for dev in tty console tty0 tty1 ram0 null urandom; do
+            echo "/dev/$dev dev/$dev    none bind,optional,create=file 0 0" >> $path/fstab
        done
    else
        mknod -m 666 tty c 5 0       || res=1