X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=99-systemd.rules;h=c5c330f9361cff2dda8534b62a5ade874443fa8a;hp=1de03a1e173b13b3013fffd909571ed7e6ef9e92;hb=fbe9f3a92dcb585c14faf06ef9017f552e405222;hpb=dec1c02a34b4c5b9da5d2da2dcc09646cf1cef29

diff --git a/99-systemd.rules b/99-systemd.rules
index 1de03a1e1..c5c330f93 100644
--- a/99-systemd.rules
+++ b/99-systemd.rules
@@ -17,8 +17,22 @@
 
 ACTION!="add|change", GOTO="systemd_end"
 
-KERNEL=="tty[0-9]|tty1[0-2]", GOTO="systemd_end"
+KERNEL=="tty[0-9]|tty1[0-2]", ENV{SYSTEMD_EXPOSE}="1"
+KERNEL=="ttyS*", ENV{SYSTEMD_EXPOSE}="1"
 
-KERNEL=="tty[0-9]*", ENV{SYSTEMD_EXPOSE}="0"
+SUBSYSTEM=="block", ENV{SYSTEMD_EXPOSE}="1"
+
+# We need a hardware independant way to identify network devices. We
+# use the /sys/subsystem path for this. Current vanilla kernels don't
+# actually support that hierarchy right now, however upcoming kernels
+# will. HAL and udev internally support /sys/subsystem already, hence
+# it should be safe to use this here, too. This is mostly just an
+# identification string for systemd, so whether the path actually is
+# accessible or not does not matter as long as it is unique and in the
+# filesystem namespace.
+#
+# http://git.kernel.org/?p=linux/hotplug/udev.git;a=blob;f=libudev/libudev-enumerate.c;h=da831449dcaf5e936a14409e8e68ab12d30a98e2;hb=HEAD#l742
+
+SUBSYSTEM=="net", KERNEL!="lo", ENV{SYSTEMD_EXPOSE}="1", ENV{SYSTEMD_ALIAS}="/sys/subsystem/net/devices/%k"
 
 LABEL="systemd_end"