From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 7 Mar 2024 17:28:00 -0500
Subject: lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/mlibc/sysdeps/managarm/generic/net.cpp | 57 ++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 lib/mlibc/sysdeps/managarm/generic/net.cpp

(limited to 'lib/mlibc/sysdeps/managarm/generic/net.cpp')

diff --git a/lib/mlibc/sysdeps/managarm/generic/net.cpp b/lib/mlibc/sysdeps/managarm/generic/net.cpp
new file mode 100644
index 0000000..63f2d0c
--- /dev/null
+++ b/lib/mlibc/sysdeps/managarm/generic/net.cpp
@@ -0,0 +1,57 @@
+#include <mlibc/all-sysdeps.hpp>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+namespace mlibc {
+
+int sys_if_indextoname(unsigned int index, char *name) {
+	int fd = 0;
+	int r = sys_socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, AF_UNSPEC, &fd);
+
+	if(r)
+		return r;
+
+	struct ifreq ifr;
+	ifr.ifr_ifindex = index;
+
+	int res = 0;
+	int ret = sys_ioctl(fd, SIOCGIFNAME, &ifr, &res);
+	close(fd);
+
+	if(ret) {
+		if(ret == ENODEV)
+			return ENXIO;
+		return ret;
+	}
+
+	strncpy(name, ifr.ifr_name, IF_NAMESIZE);
+
+	return 0;
+}
+
+int sys_if_nametoindex(const char *name, unsigned int *ret) {
+	int fd = 0;
+	int r = sys_socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, AF_UNSPEC, &fd);
+
+	if(r)
+		return r;
+
+	struct ifreq ifr;
+	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
+
+	int res = 0;
+	r = sys_ioctl(fd, SIOCGIFINDEX, &ifr, &res);
+	close(fd);
+
+	if(r)
+		return r;
+
+	*ret = ifr.ifr_ifindex;
+
+	return 0;
+}
+
+} //namespace mlibc
-- 
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