Add top-like monitoring tool

Author: ben-grande

debian/qubes-core-agent.install

@@ -15,6 +15,7 @@ etc/qubes-rpc/qubes.DetachPciDevice
 etc/qubes-rpc/qubes.Filecopy
 etc/qubes-rpc/qubes.GetAppmenus
 etc/qubes-rpc/qubes.GetImageRGBA
+etc/qubes-rpc/qubes.GetMem
 etc/qubes-rpc/qubes.InstallUpdatesGUI
 etc/qubes-rpc/qubes.OpenInVM
 etc/qubes-rpc/qubes.OpenURL

qubes-rpc/Makefile

@@ -86,6 +86,7 @@ install:
 		qubes.StartApp \
 		qubes.PostInstall \
 		qubes.GetDate \
+		qubes.GetMem \
 		qubes.ShowInTerminal \
 		qubes.TemplateSearch \
 		qubes.TemplateDownload

qubes-rpc/qubes.GetMem

@@ -0,0 +1,9 @@
+#!/bin/sh
+# Return percentage of available memory.
+set -eu
+awk -- '
+  BEGIN {total=0; available=0}
+  /MemTotal/ {total=$2}
+  /MemAvailable/ {available=$2}
+  END {printf "%.0f", (available/total)*100}
+  ' /proc/meminfo

rpm_spec/core-agent.spec.in

@@ -897,6 +897,7 @@ rm -f %{name}-%{version}
 %config(noreplace) /etc/qubes-rpc/qubes.Filecopy
 %config(noreplace) /etc/qubes-rpc/qubes.OpenInVM
 %config(noreplace) /etc/qubes-rpc/qubes.OpenURL
+%config(noreplace) /etc/qubes-rpc/qubes.GetMem
 %config(noreplace) /etc/qubes-rpc/qubes.GetAppmenus
 %config(noreplace) /etc/qubes-rpc/qubes.ConnectTCP
 %config(noreplace) /etc/qubes-rpc/qubes.VMShell