Initial QSfera import

Server/vendor/github.com/KimMachineGun/automemlimit/memlimit/cgroups_linux.go

@@ -0,0 +1,32 @@
+//go:build linux
+// +build linux
+
+package memlimit
+
+// FromCgroup retrieves the memory limit from the cgroup.
+func FromCgroup() (uint64, error) {
+	return fromCgroup(detectCgroupVersion)
+}
+
+// FromCgroupV1 retrieves the memory limit from the cgroup v1 controller.
+// After v1.0.0, this function could be removed and FromCgroup should be used instead.
+func FromCgroupV1() (uint64, error) {
+	return fromCgroup(func(_ []mountInfo) (bool, bool) {
+		return true, false
+	})
+}
+
+// FromCgroupHybrid retrieves the memory limit from the cgroup v2 and v1 controller sequentially,
+// basically, it is equivalent to FromCgroup.
+// After v1.0.0, this function could be removed and FromCgroup should be used instead.
+func FromCgroupHybrid() (uint64, error) {
+	return FromCgroup()
+}
+
+// FromCgroupV2 retrieves the memory limit from the cgroup v2 controller.
+// After v1.0.0, this function could be removed and FromCgroup should be used instead.
+func FromCgroupV2() (uint64, error) {
+	return fromCgroup(func(_ []mountInfo) (bool, bool) {
+		return false, true
+	})
+}