From e3ecf058662e57d235286048f4068acdc14803f6 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Thu, 7 Aug 2025 02:20:55 +0300
Subject: [PATCH] LibC: Add stubs for {get,free}ifaddrs

These are needed for our libuv port
---
 userspace/libraries/LibC/CMakeLists.txt    |  1 +
 userspace/libraries/LibC/ifaddrs.cpp       | 15 ++++++++++
 userspace/libraries/LibC/include/ifaddrs.h | 32 ++++++++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 userspace/libraries/LibC/ifaddrs.cpp
 create mode 100644 userspace/libraries/LibC/include/ifaddrs.h

diff --git a/userspace/libraries/LibC/CMakeLists.txt b/userspace/libraries/LibC/CMakeLists.txt
index 8002b6ca..532819a7 100644
--- a/userspace/libraries/LibC/CMakeLists.txt
+++ b/userspace/libraries/LibC/CMakeLists.txt
@@ -12,6 +12,7 @@ set(LIBC_SOURCES
 	fenv.cpp
 	ftw.cpp
 	grp.cpp
+	ifaddrs.cpp
 	inttypes.cpp
 	langinfo.cpp
 	libgen.cpp
diff --git a/userspace/libraries/LibC/ifaddrs.cpp b/userspace/libraries/LibC/ifaddrs.cpp
new file mode 100644
index 00000000..d8905e9f
--- /dev/null
+++ b/userspace/libraries/LibC/ifaddrs.cpp
@@ -0,0 +1,15 @@
+#include <ifaddrs.h>
+
+#include <BAN/Assert.h>
+
+int getifaddrs(struct ifaddrs** ifap)
+{
+	(void)ifap;
+	ASSERT_NOT_REACHED();
+}
+
+void freeifaddrs(struct ifaddrs*  ifa)
+{
+	(void)ifa;
+	ASSERT_NOT_REACHED();
+}
diff --git a/userspace/libraries/LibC/include/ifaddrs.h b/userspace/libraries/LibC/include/ifaddrs.h
new file mode 100644
index 00000000..9cebbc09
--- /dev/null
+++ b/userspace/libraries/LibC/include/ifaddrs.h
@@ -0,0 +1,32 @@
+#ifndef _IFADDRS_H
+#define _IFADDRS_H 1
+
+// https://man7.org/linux/man-pages/man3/getifaddrs.3.html
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+struct ifaddrs
+{
+	struct ifaddrs*  ifa_next;    /* Next item in list */
+	char*            ifa_name;    /* Name of interface */
+	unsigned int     ifa_flags;   /* Flags from SIOCGIFFLAGS */
+	struct sockaddr* ifa_addr;    /* Address of interface */
+	struct sockaddr* ifa_netmask; /* Netmask of interface */
+	union {
+		struct sockaddr* ifu_broadaddr; /* Broadcast address of interface */
+		struct sockaddr* ifu_dstaddr;   /* Point-to-point destination address */
+	} ifa_ifu;
+	void*            ifa_data;    /* Address-specific data */
+};
+
+#define ifa_broadaddr ifa_ifu.ifu_broadaddr
+#define ifa_dstaddr   ifa_ifu.ifu_dstaddr
+
+int getifaddrs(struct ifaddrs **ifap);
+void freeifaddrs(struct ifaddrs *ifa);
+
+__END_DECLS
+
+#endif