[UNIKRAFT/LIBLIBEVENT PATCH 5/6] Add patches folder

[gaulthier.gain@xxxxxxxxx]

From: gaulthier gain <gaulthier.gain@xxxxxxxxx>

The first patch avoid a static declaration conflicts with the
`arc4random_buf` function due to newlib. The second patch avoids a
warning during the compilation.

Signed-off-by: gaulthier gain <gaulthier.gain@xxxxxxxxx>
---
 .../0001-avoid-arc4random_buf-conflicts.patch | 38 +++++++++++++++++++
 ...date-if_nametoindex-with-lwip-prefix.patch | 29 ++++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 patches/0001-avoid-arc4random_buf-conflicts.patch
 create mode 100644 patches/0002-update-if_nametoindex-with-lwip-prefix.patch

diff --git a/patches/0001-avoid-arc4random_buf-conflicts.patch 
b/patches/0001-avoid-arc4random_buf-conflicts.patch
new file mode 100644
index 0000000..1baa249
--- /dev/null
+++ b/patches/0001-avoid-arc4random_buf-conflicts.patch
@@ -0,0 +1,38 @@
+From 4b609315b31391d85b6391106d53fa4b3b940508 Mon Sep 17 00:00:00 2001
+From: gaulthier gain <gaulthier.gain@xxxxxxxxx>
+Date: Fri, 7 Aug 2020 15:29:24 +0000
+Subject: [PATCH] Add macro to avoid conflicts with arc4random
+
+This patch adds the `EVENT__HAVE_ARC4RANDOM_BUF` macro which is
+defined in the `config.h` of the libevent repository in order
+to avoid conflicts with libc (musl/newlib) since `arc4random_buf`
+is already defined.
+
+Signed-off-by: gaulthier gain <gaulthier.gain@xxxxxxxxx>
+---
+ arc4random.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/arc4random.c b/arc4random.c
+index a2338e6..7b29923 100644
+--- a/arc4random.c
++++ b/arc4random.c
+@@ -494,6 +494,7 @@ arc4random(void)
+ }
+ #endif
+ 
++#ifndef EVENT__HAVE_ARC4RANDOM_BUF
+ ARC4RANDOM_EXPORT void
+ arc4random_buf(void *buf_, size_t n)
+ {
+@@ -507,6 +508,7 @@ arc4random_buf(void *buf_, size_t n)
+       }
+       ARC4_UNLOCK_();
+ }
++#endif
+ 
+ #ifndef ARC4RANDOM_NOUNIFORM
+ /*
+-- 
+2.17.1
+
diff --git a/patches/0002-update-if_nametoindex-with-lwip-prefix.patch 
b/patches/0002-update-if_nametoindex-with-lwip-prefix.patch
new file mode 100644
index 0000000..7a8e7ca
--- /dev/null
+++ b/patches/0002-update-if_nametoindex-with-lwip-prefix.patch
@@ -0,0 +1,29 @@
+From cd469df5ae915282bc1cc633c895fc7c4b601aef Mon Sep 17 00:00:00 2001
+From: gaulthier gain <gaulthier.gain@xxxxxxxxx>
+Date: Mon, 10 Aug 2020 11:28:45 +0000
+Subject: [PATCH] Update if_nametoindex with lwip prefix
+
+This patch updates the definition of the `if_nametoindex` function to
+`lwip_if_nametoindex` which avoids warning during building.
+
+Signed-off-by: gaulthier gain <gaulthier.gain@xxxxxxxxx>
+---
+ evutil.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/evutil.c b/evutil.c
+index 9817f08..957c301 100644
+--- a/evutil.c
++++ b/evutil.c
+@@ -2007,7 +2007,7 @@ evutil_inet_pton_scope(int af, const char *src, void 
*dst, unsigned *indexp)
+       if (cp == NULL)
+               return evutil_inet_pton(af, src, dst);
+ 
+-      if_index = if_nametoindex(cp + 1);
++      if_index = lwip_if_nametoindex(cp + 1);
+       if (if_index == 0) {
+               /* Could be numeric */
+               if_index = strtoul(cp + 1, &check, 10);
+-- 
+2.17.1
+
-- 
2.17.1