Test for raw device using a virtual disk image

Test whether a disk image is mountable & writable inside the VM
and whether the result is readable again by macOS.

Signed-off-by: Johannes Würbach <[email protected]>

test/test_linux.exp

@@ -4,17 +4,30 @@ set KERNEL "./vmlinuz"
 set INITRD "./initrd.gz"
 set CMDLINE "earlyprintk=serial console=ttyS0"
 
-spawn ../build/com.docker.hyperkit -A -m 512M -s 0:0,hostbridge -s 31,lpc -l com1,stdio -f kexec,$KERNEL,$INITRD,$CMDLINE
+exec hdiutil create -megabytes 20 -fs "MS-DOS" disk
+set DISK [exec hdiutil attach -nomount -noverify -noautofsck disk.dmg | head -n1 | cut -f1 -d " "]
+set RDISK [string map { disk rdisk } $DISK]
+
+spawn ../build/com.docker.hyperkit -A -m 512M -s 0:0,hostbridge -s 31,lpc -l com1,stdio -s 1:0,ahci-hd,$RDISK -f kexec,$KERNEL,$INITRD,$CMDLINE
 set pid [exp_pid]
 set timeout 20
 
 expect {
   timeout {puts "FAIL boot"; exec kill -9 $pid; exit 1}
   "\r\ntc@box:~$ "
 }
+send "sudo mount /dev/sda1 /mnt/sda1\r\n"
+send "sudo touch /mnt/sda1/test\r\n"
+send "sudo umount /mnt/sda1\r\n"
 send "sudo halt\r\n";
 expect {
   timeout {puts "FAIL shutdown"; exec kill -9 $pid; exit 1}
   "reboot: System halted"
 }
+
+exec hdiutil mount -mountpoint ./test-vol /dev/disk4s1
+exec cat ./test-vol/test
+exec hdiutil detach $DISK
+exec rm disk.dmg
+
 puts "\n\nPASS"