Remove Cgroups v1 support (podman6)

Signed-off-by: Lokesh Mandvekar <[email protected]>

Author: lsm5

info.go

@@ -51,16 +51,12 @@ func hostInfo() map[string]any {
 	info["cpus"] = runtime.NumCPU()
 	info["rootless"] = unshare.IsRootless()
 
-	unified, err := cgroups.IsCgroup2UnifiedMode()
+	_, err := cgroups.IsCgroup2UnifiedMode()
 	if err != nil {
 		logrus.Error(err, "err reading cgroups mode")
 	}
-	cgroupVersion := "v1"
 	ociruntime := util.Runtime()
-	if unified {
-		cgroupVersion = "v2"
-	}
-	info["CgroupVersion"] = cgroupVersion
+	info["CgroupVersion"] = "v2"
 	info["OCIRuntime"] = ociruntime
 
 	mi, err := system.ReadMemInfo()

tests/helpers.bash

@@ -700,15 +700,6 @@ function skip_if_cgroupsv2() {
     fi
 }
 
-#######################
-#  skip_if_cgroupsv1  #  Some tests don't work with cgroupsv1
-#######################
-function skip_if_cgroupsv1() {
-    if ! is_cgroupsv2; then
-        skip "${1:-test does not work with cgroups v1}"
-    fi
-}
-
 ##########################
 #  skip_if_in_container  #
 ##########################

tests/run.bats

@@ -947,7 +947,6 @@ _EOF
 
 @test "rootless on cgroupv2 and systemd runs under user.slice" {
 	skip_if_no_runtime
-	skip_if_cgroupsv1
 	skip_if_in_container
 	skip_if_root_environment
 	if test "$DBUS_SESSION_BUS_ADDRESS" = ""; then

tests/tutorial.bats

@@ -5,7 +5,6 @@ load helpers
 @test "tutorial-cgroups" {
 	# confidence check for the sake of packages that consume our library
 	skip_if_no_runtime
-	skip_if_cgroupsv1
 	skip_if_rootless_environment
 	skip_if_chroot