--- a/vendor/golang.org/x/sys/unix/sockcmsg_unix.go Thu Sep 22 16:37:07 2022 +0200
+++ b/vendor/golang.org/x/sys/unix/sockcmsg_unix.go Sat Feb 04 12:58:35 2023 +0100
@@ -52,6 +52,20 @@
return msgs, nil
}
+// ParseOneSocketControlMessage parses a single socket control message from b, returning the message header,
+// message data (a slice of b), and the remainder of b after that single message.
+// When there are no remaining messages, len(remainder) == 0.
+func ParseOneSocketControlMessage(b []byte) (hdr Cmsghdr, data []byte, remainder []byte, err error) {
+ h, dbuf, err := socketControlMessageHeaderAndData(b)
+ if err != nil {
+ return Cmsghdr{}, nil, nil, err
+ }
+ if i := cmsgAlignOf(int(h.Len)); i < len(b) {
+ remainder = b[i:]
+ }
+ return *h, dbuf, remainder, nil
+}
+
func socketControlMessageHeaderAndData(b []byte) (*Cmsghdr, []byte, error) {
h := (*Cmsghdr)(unsafe.Pointer(&b[0]))
if h.Len < SizeofCmsghdr || uint64(h.Len) > uint64(len(b)) {