1 files changed, 52 insertions, 0 deletions
diff --git a/dhcpv4/option_root_path.go b/dhcpv4/option_root_path.go
new file mode 100644
index 0000000..504ed17
--- /dev/null
+++ b/dhcpv4/option_root_path.go
@@ -0,0 +1,52 @@
+package dhcpv4
+
+import (
+	"fmt"
+)
+
+// This option implements the root path option
+// https://tools.ietf.org/html/rfc2132
+
+// OptRootPath represents the path to the client's root disk.
+type OptRootPath struct {
+	Path string
+}
+
+// ParseOptRootPath constructs an OptRootPath struct from a sequence of  bytes
+// and returns it, or an error.
+func ParseOptRootPath(data []byte) (*OptRootPath, error) {
+	// Should at least have code and length
+	if len(data) < 2 {
+		return nil, ErrShortByteStream
+	}
+	code := OptionCode(data[0])
+	if code != OptionRootPath {
+		return nil, fmt.Errorf("expected option %v, got %v instead", OptionRootPath, code)
+	}
+	length := int(data[1])
+	if len(data) < 2+length {
+		return nil, ErrShortByteStream
+	}
+	return &OptRootPath{Path: string(data[2 : 2+length])}, nil
+}
+
+// Code returns the option code.
+func (o *OptRootPath) Code() OptionCode {
+	return OptionRootPath
+}
+
+// ToBytes returns a serialized stream of bytes for this option.
+func (o *OptRootPath) ToBytes() []byte {
+	return append([]byte{byte(o.Code()), byte(o.Length())}, []byte(o.Path)...)
+}
+
+// String returns a human-readable string for this option.
+func (o *OptRootPath) String() string {
+	return fmt.Sprintf("Root Path -> %v", o.Path)
+}
+
+// Length returns the length of the data portion (excluding option code and byte
+// for length, if any).
+func (o *OptRootPath) Length() int {
+	return len(o.Path)
+}