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firecracker: Setup rootfs to be RO

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Setup rootfs to be RO both from the VMM point of view and the
VM point of view.

Fixes: #1632

Signed-off-by: Manohar Castelino <manohar.r.castelino@intel.com>
This commit is contained in:
Manohar Castelino 2019-05-07 15:03:28 -07:00
parent 9a27ac29bc
commit 5e9cb48b8f
1 changed files with 3 additions and 1 deletions
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4
virtcontainers/fc.go
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@ -57,6 +57,8 @@ const (
var fcKernelParams = []Param{
// The boot source is the first partition of the first block device added
{"root", "/dev/vda1"},
{"rootflags", "data=ordered,errors=remount-ro ro"},
{"rootfstype", "ext4"},
{"pci", "off"},
{"reboot", "k"},
{"panic", "1"},
@ -299,7 +301,7 @@ func (fc *firecracker) fcSetVMRootfs(path string) error {
driveID := "rootfs"
driveParams := ops.NewPutGuestDriveByIDParams()
driveParams.SetDriveID(driveID)
isReadOnly := false
isReadOnly := true
//Add it as a regular block device
//This allows us to use a paritioned root block device
isRootDevice := false