Parse postinstall program progress updates.
In Android postinstall is expected to take a long time in common cases.
This patch allows the postinstall program to report back to the updater
a progress indication, which will then be forwarded to all the clients
listening. These progress updates are part of the FINALIZING status.
Bug: 27880754
TEST=Added unittests. Deployed an update to an edison-eng and post-install reported progress back with the postinstall_example.
Change-Id: I35f96b92f090219c54cca48d8ab07c54cf8b4ab1
diff --git a/sample_images/generate_images.sh b/sample_images/generate_images.sh
index ed5e00d..6a0d1ea 100755
--- a/sample_images/generate_images.sh
+++ b/sample_images/generate_images.sh
@@ -172,6 +172,17 @@
exit 1
EOF
+ # A program that reports back progress.
+ sudo tee "${mntdir}"/bin/postinst_progress >/dev/null <<EOF
+#!/etc/../bin/sh
+# These values have exact representation in IEEE 754 so we avoid rounding
+# errors.
+echo global_progress 0.25 >&3
+echo global_progress 0.5 >&3
+echo global_progress 1.0 >&3
+exit 0
+EOF
+
# A postinstall bash program.
sudo tee "${mntdir}"/bin/self_check_context >/dev/null <<EOF
#!/etc/../bin/sh