From: Josh Kunz <jkz@google.com>
Date: Tue, 7 Jul 2020 00:10:36 +0000 (-0700)
Subject: linux-user: Use EPROTONOSUPPORT for unimplemented netlink protocols
X-Git-Tag: v5.1.0-rc0~6^2~6
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=71e2443e4ca1540db63c0bbf58ae78944c97e993;p=thirdparty%2Fqemu.git

linux-user: Use EPROTONOSUPPORT for unimplemented netlink protocols

Linux uses the EPROTONOSUPPORT error code[1] if the users requests a
netlink socket with an unsupported netlink protocol. This change
switches linux-user to use the same code as Linux, instead of
EPFNOSUPPORT (which AFAIK is just an anachronistic version of
EAFNOSUPPORT).

Tested by compiling all linux-user targets on x86.

[1]:
https://github.com/torvalds/linux/blob/bfe91da29bfad9941d5d703d45e29f0812a20724/net/netlink/af_netlink.c#L683

Signed-off-by: Josh Kunz <jkz@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200707001036.1671982-1-jkz@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 98ea86ca81f..e9f53340cd6 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2990,7 +2990,7 @@ static abi_long do_socket(int domain, int type, int protocol)
 #endif
          protocol == NETLINK_KOBJECT_UEVENT ||
          protocol == NETLINK_AUDIT)) {
-        return -TARGET_EPFNOSUPPORT;
+        return -TARGET_EPROTONOSUPPORT;
     }
 
     if (domain == AF_PACKET ||