Merge pull request #59 from desultory/fakeudev

Fakeudev

Author: desultory

src/ugrd/fs/fakeudev.py

@@ -0,0 +1,23 @@
+"""
+UDEV is amazing and well desinged software.
+
+In order to make systemd not time out on boot, we need to fake it.
+To do this, we simply need to read /sys/block/dm-*/uevent,
+We can then write 'E:DM_UDEV_PRIMARY_SOURCE_FLAG=1\n' to each:
+    /run/udev/data/b<MAJOR>:<MINOR>.
+This will make systemd think that udev is working and not time out.
+"""
+
+
+def fake_dm_udev(self):
+    """
+    returns a bash script to fake udev for dm devices.
+    calls _make_fake_dm_udev_db for each dm device.
+    """
+    return ['mkdir --parents /run/udev/data',
+            'for dm in /sys/block/dm-*; do',
+            '    source "${dm}/uevent"',
+            '    einfo "Faking udev for ${DEVNAME}"',
+            '    udev_db_file="/run/udev/data/b${MAJOR}:${MINOR}"',
+            "    echo -e 'E:DM_UDEV_PRIMARY_SOURCE_FLAG=1\n' > ${udev_db_file}",
+            'done']

src/ugrd/fs/fakeudev.toml

@@ -0,0 +1,2 @@
+[imports.init_mount_late]
+'ugrd.fs.fakeudev' = ['fake_dm_udev']