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814d953133
a highly reliable, scalable and efficient distributed file system https://github.com/lizardfs/lizardfs/
152 lines
4 KiB
Diff
152 lines
4 KiB
Diff
From 9b03a1b4481ed48f8950c2cffd36112f67d6e183 Mon Sep 17 00:00:00 2001
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From: Frank Denis <github@pureftpd.org>
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Date: Thu, 19 Mar 2015 11:52:40 +0100
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Subject: [PATCH] common: Add multi-platform endian conversion functions
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This commit adds portable_endian.h file with set of endian conversion
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functions.
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Change-Id: I145cdc7c79eb9a16bd5199247af1976e18c59814
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---
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src/common/portable_endian.h | 116 +++++++++++++++++++++++++++++++++++++++++++
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src/common/posix_acl_xattr.h | 1 +
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2 files changed, 117 insertions(+)
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create mode 100644 src/common/portable_endian.h
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diff --git a/src/common/portable_endian.h b/src/common/portable_endian.h
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new file mode 100644
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index 0000000..e1d1d59
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--- /dev/null
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+++ b/src/common/portable_endian.h
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@@ -0,0 +1,116 @@
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+// "License": Public Domain
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+// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like.
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+// In case there are jurisdictions that don't support putting things in the public domain you can also consider it to
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+// be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it
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+// an example on how to get the endian conversion functions on different platforms.
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+
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+#pragma once
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+
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+#include "common/platform.h"
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+
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+#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
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+
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+#define __WINDOWS__
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+
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+#endif
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+
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+#if defined(__linux__) || defined(__CYGWIN__)
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+
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+#include <endian.h>
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+
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+#elif defined(__APPLE__)
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+
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+#include <libkern/OSByteOrder.h>
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+
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+#define htobe16(x) OSSwapHostToBigInt16(x)
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+#define htole16(x) OSSwapHostToLittleInt16(x)
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+#define be16toh(x) OSSwapBigToHostInt16(x)
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+#define le16toh(x) OSSwapLittleToHostInt16(x)
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+
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+#define htobe32(x) OSSwapHostToBigInt32(x)
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+#define htole32(x) OSSwapHostToLittleInt32(x)
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+#define be32toh(x) OSSwapBigToHostInt32(x)
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+#define le32toh(x) OSSwapLittleToHostInt32(x)
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+
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+#define htobe64(x) OSSwapHostToBigInt64(x)
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+#define htole64(x) OSSwapHostToLittleInt64(x)
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+#define be64toh(x) OSSwapBigToHostInt64(x)
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+#define le64toh(x) OSSwapLittleToHostInt64(x)
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+
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+#define __BYTE_ORDER BYTE_ORDER
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+#define __BIG_ENDIAN BIG_ENDIAN
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+#define __LITTLE_ENDIAN LITTLE_ENDIAN
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+#define __PDP_ENDIAN PDP_ENDIAN
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+
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+#elif defined(__OpenBSD__)
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+
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+#include <sys/endian.h>
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+
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+#elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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+
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+#include <sys/endian.h>
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+
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+#define be16toh(x) betoh16(x)
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+#define le16toh(x) letoh16(x)
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+
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+#define be32toh(x) betoh32(x)
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+#define le32toh(x) letoh32(x)
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+
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+#define be64toh(x) betoh64(x)
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+#define le64toh(x) letoh64(x)
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+
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+#elif defined(__WINDOWS__)
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+
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+#include <winsock2.h>
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+#include <sys/param.h>
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+
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+#if BYTE_ORDER == LITTLE_ENDIAN
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+
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+#define htobe16(x) htons(x)
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+#define htole16(x) (x)
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+#define be16toh(x) ntohs(x)
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+#define le16toh(x) (x)
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+
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+#define htobe32(x) htonl(x)
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+#define htole32(x) (x)
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+#define be32toh(x) ntohl(x)
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+#define le32toh(x) (x)
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+
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+#define htobe64(x) htonll(x)
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+#define htole64(x) (x)
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+#define be64toh(x) ntohll(x)
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+#define le64toh(x) (x)
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+
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+#elif BYTE_ORDER == BIG_ENDIAN
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+
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+#define htobe16(x) (x)
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+#define htole16(x) __builtin_bswap16(x)
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+#define be16toh(x) (x)
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+#define le16toh(x) __builtin_bswap16(x)
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+
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+#define htobe32(x) (x)
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+#define htole32(x) __builtin_bswap32(x)
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+#define be32toh(x) (x)
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+#define le32toh(x) __builtin_bswap32(x)
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+
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+#define htobe64(x) (x)
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+#define htole64(x) __builtin_bswap64(x)
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+#define be64toh(x) (x)
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+#define le64toh(x) __builtin_bswap64(x)
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+
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+#else
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+
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+#error byte order not supported
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+
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+#endif
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+
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+#define __BYTE_ORDER BYTE_ORDER
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+#define __BIG_ENDIAN BIG_ENDIAN
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+#define __LITTLE_ENDIAN LITTLE_ENDIAN
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+#define __PDP_ENDIAN PDP_ENDIAN
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+
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+#else
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+
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+#error platform not supported
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+
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+#endif
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diff --git a/src/common/posix_acl_xattr.h b/src/common/posix_acl_xattr.h
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index 29c3543..c293dc9 100644
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--- a/src/common/posix_acl_xattr.h
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+++ b/src/common/posix_acl_xattr.h
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@@ -8,6 +8,7 @@
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#include "common/exception.h"
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#include "common/massert.h"
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+#include "common/portable_endian.h"
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// These #defines and structs were extracted from kernel sources
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--
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2.4.5
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