From 901aab8761daa5c2dae5e470d51f5b3bf76e2b78 Mon Sep 17 00:00:00 2001
From: Luna <git@l4.pm>
Date: Sun, 29 Mar 2020 17:45:43 -0300
Subject: Add ioctl errors

---
 lib/std/net.zig | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'lib/std/net.zig')

diff --git a/lib/std/net.zig b/lib/std/net.zig
index 5cc9a8f740..78ed8bc913 100644
--- a/lib/std/net.zig
+++ b/lib/std/net.zig
@@ -533,7 +533,18 @@ fn if_nametoindex(name: []const u8) !u32 {
         @ptrToInt(&ifr),
     );
 
-    return ifr.ifr_ifru.ifru_ivalue;
+    switch (os.errno(rc)) {
+        os.EBADF => return error.BadFile,
+        os.EINTR => return error.CaughtSignal,
+        os.EINVAL => unreachable,
+        os.EIO => return error.FileSystem,
+        os.ENOTTY => unreachable,
+        os.ENXIO => unreachable,
+        os.ENODEV => return error.Unsupported,
+        else => {},
+    }
+
+    return @bitCast(u32, ifr.ifr_ifru.ifru_ivalue);
 }
 
 pub const AddressList = struct {
-- 
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