HEIMDAL: move code from source4/heimdal* to third_party/heimdal*

This makes it clearer that we always want to do heimdal changes
via the lorikeet-heimdal repository.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>

Autobuild-User(master): Joseph Sutton <jsutton@samba.org>
Autobuild-Date(master): Wed Jan 19 21:41:59 UTC 2022 on sn-devel-184

1 files changed, 131 insertions, 0 deletions

diff --git a/third_party/heimdal/lib/roken/net_write.c b/third_party/heimdal/lib/roken/net_write.c
new file mode 100644
index 00000000000..1e8361999ea
--- /dev/null
+++ b/third_party/heimdal/lib/roken/net_write.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include "roken.h"
+
+/*
+ * Like write but blocking sockets never return partial data, i.e. we retry on
+ * EINTR.  With non-blocking sockets (EWOULDBLOCK or EAGAIN) we return the
+ * number of bytes written.
+ */
+
+#ifndef _WIN32
+
+ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
+net_write (rk_socket_t fd, const void *buf, size_t nbytes)
+{
+    const char *cbuf = (const char *)buf;
+    ssize_t count;
+    size_t rem = nbytes;
+
+    while (rem > 0) {
+	count = write (fd, cbuf, rem);
+	if (count < 0) {
+            switch (errno) {
+            case EINTR:
+		continue;
+#if defined(EAGAIN) && EAGAIN != EWOULDBLOCK
+            case EAGAIN:
+#endif
+            case EWOULDBLOCK:
+                return nbytes - rem;
+            default:
+		return count;
+            }
+	}
+	cbuf += count;
+	rem -= count;
+    }
+    return nbytes;
+}
+
+#else
+
+ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
+net_write(rk_socket_t sock, const void *buf, size_t nbytes)
+{
+    const char *cbuf = (const char *)buf;
+    ssize_t count;
+    size_t rem = nbytes;
+#ifdef SOCKET_IS_NOT_AN_FD
+    int use_write = 0;
+#endif
+
+    while (rem > 0) {
+#ifdef SOCKET_IS_NOT_AN_FD
+	if (use_write)
+	    count = _write (sock, cbuf, rem);
+	else
+	    count = send (sock, cbuf, rem, 0);
+
+	if (use_write == 0 &&
+	    rk_IS_SOCKET_ERROR(count) &&
+	    (rk_SOCK_ERRNO == WSANOTINITIALISED ||
+             rk_SOCK_ERRNO == WSAENOTSOCK)) {
+	    use_write = 1;
+
+	    count = _write (sock, cbuf, rem);
+	}
+#else
+	count = send (sock, cbuf, rem, 0);
+#endif
+	if (count < 0) {
+            if (!use_write) {
+                switch (rk_SOCK_ERRNO) {
+                case WSAEINTR:
+                    continue;
+                case WSAEWOULDBLOCK:
+                    return nbytes - rem;
+                default:
+                    return count;
+                }
+            } else {
+                switch (errno) {
+                case EINTR:
+                    continue;
+                case EWOULDBLOCK:
+                    return nbytes - rem;
+                default:
+                    return count;
+                }
+            }
+	}
+	cbuf += count;
+	rem -= count;
+    }
+    return nbytes;
+}
+
+#endif