Symbol: SO_PEERPIDFD
net/core/sock.c
1911
case SO_PEERPIDFD:
net/unix/af_unix.c
1050
case SO_PEERPIDFD:
tools/testing/selftests/coredump/coredump_test_helpers.c
131
int ret = getsockopt(fd, SOL_SOCKET, SO_PEERPIDFD, &fd_peer_pidfd,
tools/testing/selftests/net/af_unix/scm_pidfd.c
467
if (getsockopt(cfd, SOL_SOCKET, SO_PEERPIDFD, &peer_pidfd, &len)) {