From: Frédéric Lécaille <flecaille@haproxy.com>
Date: Tue, 6 Jul 2021 12:34:46 +0000 (+0200)
Subject: MINOR: net_helper: add functions for pointers
X-Git-Tag: v2.5-dev8~109
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9621565b74bc105b43c57ca7b41babb73eddf3a2;p=thirdparty%2Fhaproxy.git

MINOR: net_helper: add functions for pointers

Add two functions to read/write pointer values to/from vectors.
---

diff --git a/include/haproxy/net_helper.h b/include/haproxy/net_helper.h
index 8b9f68b407..f019d30ff1 100644
--- a/include/haproxy/net_helper.h
+++ b/include/haproxy/net_helper.h
@@ -75,6 +75,22 @@ static inline void write_u64(void *p, const uint64_t u64)
 	u->u64 = u64;
 }
 
+/* Read a void* in native host order */
+static inline void *read_ptr(const void *p)
+{
+	const union {  void *ptr; } __attribute__((packed))*u = p;
+	return u->ptr;
+}
+
+/* Write a void* in native host order */
+static inline void write_ptr(void *p, const void *ptr)
+{
+	if (sizeof(ptr) == 4)
+		return write_u32(p, (uintptr_t)ptr);
+	else
+		return write_u64(p, (uintptr_t)ptr);
+}
+
 /* Read a possibly wrapping number of bytes <bytes> into destination <dst>. The
  * first segment is composed of <s1> bytes at p1. The remaining byte(s), if any,
  * are read from <p2>. <s1> may be zero and may also be larger than <bytes>. The