bin/qemush

@@ -8,7 +8,7 @@ exec_as() {
     shift
 
     if [ "$(whoami)" != "$user" ]; then
-        exec sudo -E -H -u "$user" -- "$0" "$@"
+        exec sudo -u "$user" "$0" "$@"
     fi
 }
 

etc/runit/sv/virtiofsd/run

@@ -1,7 +0,0 @@
-#!/bin/sh -e
-
-# Start a virtiofsd sharing qemu shared dir
-exec /usr/lib/virtiofsd \
-    --shared-dir ~qemu/shared \
-    --socket-path /run/virtiofsd.sock \
-    --socket-group qemu

qemu/launchers/kvm

@@ -1,35 +1,20 @@
 #!/usr/bin/env python3
-from os import environ
-
-# Set number of vCPUs to use to the environment variable QEMUSH_NPROC or
-# half of total vCPUs installed if it fails
-try:
-    nproc = environ['QEMUSH_NPROC']
-except KeyError:
-    from multiprocessing import cpu_count
-    nproc = str(cpu_count() // 2)
-
-# Set amount of RAM to use to the environment variable QEMUSH_RAM or half
-# of total RAM installed if it fails
-try:
-    ram = environ['QEMUSH_RAM']
-except KeyError:
-    from psutil import virtual_memory
-    ram = str(virtual_memory().available // 2 // (1024 ** 2))
-
-# Set the command to initialize; all required parameters to make a sane KVM
-# are included and optional arguments are appended from argv
+from os import execvp
+from multiprocessing import cpu_count
+from psutil import virtual_memory
 from sys import argv
+
+nproc = cpu_count() // 2
+ram_kilo = virtual_memory().available // 2 // 1024
+
 command = [
     'qemu-system-x86_64',
     '-enable-kvm', '-daemonize',
     '-M', 'q35',
-    '-cpu', 'host', '-smp', nproc,
-    '-m', ram,
+    '-cpu', 'host', '-smp', str(nproc),
+    '-m', '{}K'.format(ram_kilo),
     '-net', 'nic'
 ] + argv[1:]
 
-# Print the final command and replace the main process with it
 print(command)
-from os import execvp
 execvp(command[0], command)