diff options
Diffstat (limited to 'winsup/cygwin/net.cc')
| -rw-r--r-- | winsup/cygwin/net.cc | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc index b6c0f7257..a01dbedf1 100644 --- a/winsup/cygwin/net.cc +++ b/winsup/cygwin/net.cc @@ -810,6 +810,25 @@ cygwin_setsockopt (int fd, int level, int optname, const void *optval, fhandler_socket *fh = get (fd); if (!fh) __leave; + + /* Switch off the AF_LOCAL handshake and thus SO_PEERCRED handling + for AF_LOCAL/SOCK_STREAM sockets. This allows to handle special + situations in which connect is called before a listening socket + accepts connections. + FIXME: In the long run we should find a more generic solution which + doesn't require a blocking handshake in accept/connect to exchange + SO_PEERCRED credentials. */ + if (level == SOL_SOCKET && optname == SO_PEERCRED) + { + if (optval || optlen + || fh->get_addr_family () != AF_LOCAL + || fh->get_socket_type () != SOCK_STREAM) + set_errno (EINVAL); + else + res = fh->af_local_set_no_getpeereid (); + __leave; + } + /* Old applications still use the old WinSock1 IPPROTO_IP values. */ if (level == IPPROTO_IP && CYGWIN_VERSION_CHECK_FOR_USING_WINSOCK1_VALUES) optname = convert_ws1_ip_optname (optname); |