Bump up runtime-spec dependency to v1.0.0

Signed-off-by: Mrunal Patel <mpatel@redhat.com>

vendor/github.com/opencontainers/runc/libcontainer/configs/config_linux.go

@@ -0,0 +1,61 @@
+package configs
+
+import "fmt"
+
+// HostUID gets the translated uid for the process on host which could be
+// different when user namespaces are enabled.
+func (c Config) HostUID(containerId int) (int, error) {
+	if c.Namespaces.Contains(NEWUSER) {
+		if c.UidMappings == nil {
+			return -1, fmt.Errorf("User namespaces enabled, but no uid mappings found.")
+		}
+		id, found := c.hostIDFromMapping(containerId, c.UidMappings)
+		if !found {
+			return -1, fmt.Errorf("User namespaces enabled, but no user mapping found.")
+		}
+		return id, nil
+	}
+	// Return unchanged id.
+	return containerId, nil
+}
+
+// HostRootUID gets the root uid for the process on host which could be non-zero
+// when user namespaces are enabled.
+func (c Config) HostRootUID() (int, error) {
+	return c.HostUID(0)
+}
+
+// HostGID gets the translated gid for the process on host which could be
+// different when user namespaces are enabled.
+func (c Config) HostGID(containerId int) (int, error) {
+	if c.Namespaces.Contains(NEWUSER) {
+		if c.GidMappings == nil {
+			return -1, fmt.Errorf("User namespaces enabled, but no gid mappings found.")
+		}
+		id, found := c.hostIDFromMapping(containerId, c.GidMappings)
+		if !found {
+			return -1, fmt.Errorf("User namespaces enabled, but no group mapping found.")
+		}
+		return id, nil
+	}
+	// Return unchanged id.
+	return containerId, nil
+}
+
+// HostRootGID gets the root gid for the process on host which could be non-zero
+// when user namespaces are enabled.
+func (c Config) HostRootGID() (int, error) {
+	return c.HostGID(0)
+}
+
+// Utility function that gets a host ID for a container ID from user namespace map
+// if that ID is present in the map.
+func (c Config) hostIDFromMapping(containerID int, uMap []IDMap) (int, bool) {
+	for _, m := range uMap {
+		if (containerID >= m.ContainerID) && (containerID <= (m.ContainerID + m.Size - 1)) {
+			hostID := m.HostID + (containerID - m.ContainerID)
+			return hostID, true
+		}
+	}
+	return -1, false
+}