[libc] add in_addr{, _t} type (llvm#162452)

These types will be used in `arpa/inet.h` and `netinet/in.h`.

Author: c8ef

libc/include/llvm-libc-types/CMakeLists.txt

@@ -39,6 +39,8 @@ add_header(float_t HDR float_t.h)
 add_header(gid_t HDR gid_t.h)
 add_header(uid_t HDR uid_t.h)
 add_header(imaxdiv_t HDR imaxdiv_t.h)
+add_header(in_addr_t HDR in_addr_t.h)
+add_header(in_addr HDR in_addr.h DEPENDS .in_addr_t)
 add_header(ino_t HDR ino_t.h)
 add_header(mbstate_t HDR mbstate_t.h)
 add_header(mode_t HDR mode_t.h)

libc/include/llvm-libc-types/in_addr.h

@@ -0,0 +1,18 @@
+//===-- Definition of in_addr type ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_TYPES_IN_ADDR_H
+#define LLVM_LIBC_TYPES_IN_ADDR_H
+
+#include "in_addr_t.h"
+
+typedef struct {
+  in_addr_t s_addr;
+} in_addr;
+
+#endif // LLVM_LIBC_TYPES_IN_ADDR_H

libc/include/llvm-libc-types/in_addr_t.h

@@ -0,0 +1,14 @@
+//===-- Definition of in_addr_t type --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_TYPES_IN_ADDR_T_H
+#define LLVM_LIBC_TYPES_IN_ADDR_T_H
+
+typedef __UINT32_TYPE__ in_addr_t;
+
+#endif // LLVM_LIBC_TYPES_IN_ADDR_T_H