daemon/Win32: provide htonl, htons, ntohl, ntohs functions.

[libguestfs.git] / daemon / htonl.c

diff --git a/daemon/htonl.c b/daemon/htonl.c
new file mode 100644 (file)
index 0000000..c9f1af0
--- /dev/null
+++ b/daemon/htonl.c
@@ -0,0 +1,82 @@
+/* Copyright (C) 1993,97,2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Windows lacks htonl, htons, ntohl, ntohs.  It defines them in
+ * header files, but doesn't have them in any library.  However
+ * because it defined them we can end up with conflicting
+ * definitions, which is why here we are careful to avoid
+ * including any Windows header file.
+ */
+
+#include <config.h>
+
+#include <stdint.h>
+#include <sys/param.h>
+#include <byteswap.h>
+
+#ifndef HAVE_NTOHL
+
+#undef htonl
+#undef ntohl
+
+uint32_t
+htonl (x)
+     uint32_t x;
+{
+#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
+#if BYTE_ORDER == BIG_ENDIAN
+  return x;
+#elif BYTE_ORDER == LITTLE_ENDIAN
+  return bswap_32 (x);
+#else
+# error "What kind of system is this?"
+#endif
+#else
+#error "BYTE_ORDER/BIG_ENDIAN/LITTLE_ENDIAN are not defined"
+#endif
+}
+
+uint32_t ntohl (uint32_t x) { return htonl (x); }
+
+#endif /* !HAVE_NTOHL */
+
+#ifndef HAVE_NTOHS
+
+#undef htons
+#undef ntohs
+
+uint16_t
+htons (x)
+     uint16_t x;
+{
+#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
+#if BYTE_ORDER == BIG_ENDIAN
+  return x;
+#elif BYTE_ORDER == LITTLE_ENDIAN
+  return bswap_16 (x);
+#else
+# error "What kind of system is this?"
+#endif
+#else
+#error "BYTE_ORDER/BIG_ENDIAN/LITTLE_ENDIAN are not defined"
+#endif
+}
+
+uint16_t ntohs (uint16_t x) { return htons (x); }
+
+#endif /* !HAVE_NTOHS */