Add global lisafs kernel flag.

PiperOrigin-RevId: 401296116

2 files changed, 13 insertions, 7 deletions

diff --git a/pkg/sentry/kernel/kernel.go b/pkg/sentry/kernel/kernel.go
index df5160b67..f913d25db 100644
--- a/pkg/sentry/kernel/kernel.go
+++ b/pkg/sentry/kernel/kernel.go
@@ -78,11 +78,19 @@ import (
 	"gvisor.dev/gvisor/pkg/tcpip"
 )
 
-// VFS2Enabled is set to true when VFS2 is enabled. Added as a global for allow
-// easy access everywhere. To be removed once VFS2 becomes the default.
+// VFS2Enabled is set to true when VFS2 is enabled. Added as a global to allow
+// easy access everywhere.
+//
+// TODO(gvisor.dev/issue/1624): Remove when VFS1 is no longer used.
 var VFS2Enabled = false
 
-// FUSEEnabled is set to true when FUSE is enabled. Added as a global for allow
+// LISAFSEnabled is set to true when lisafs protocol is enabled. Added as a
+// global to allow easy access everywhere.
+//
+// TODO(gvisor.dev/issue/6319): Remove when lisafs is default.
+var LISAFSEnabled = false
+
+// FUSEEnabled is set to true when FUSE is enabled. Added as a global to allow
 // easy access everywhere. To be removed once FUSE is completed.
 var FUSEEnabled = false
 
diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go
index fb67a8072..2f2d4df5e 100644
--- a/runsc/boot/loader.go
+++ b/runsc/boot/loader.go
@@ -241,10 +241,8 @@ func New(args Args) (*Loader, error) {
 	// Is this a VFSv2 kernel?
 	if args.Conf.VFS2 {
 		kernel.VFS2Enabled = true
-		if args.Conf.FUSE {
-			kernel.FUSEEnabled = true
-		}
-
+		kernel.FUSEEnabled = args.Conf.FUSE
+		kernel.LISAFSEnabled = args.Conf.Lisafs
 		vfs2.Override()
 	}