From dfe91e5e34bf866fe2231b93b1a910e159d02d64 Mon Sep 17 00:00:00 2001
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Mon, 18 Nov 2019 10:19:16 +0000
Subject: [PATCH] Make linux(4) open(2)/openat(2) return ELOOP instead of
 EMLINK, when being passed O_NOFOLLOW.  This fixes LTP testcase openat02:5.

Reviewed by:	emaste
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D22384
---
 sys/compat/linux/linux_file.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
index 778ad77daf9..6302a053875 100644
--- a/sys/compat/linux/linux_file.c
+++ b/sys/compat/linux/linux_file.c
@@ -132,8 +132,11 @@ linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mod
 	/* XXX LINUX_O_NOATIME: unable to be easily implemented. */
 
 	error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode);
-	if (error != 0)
+	if (error != 0) {
+		if (error == EMLINK)
+			error = ELOOP;
 		goto done;
+	}
 	if (bsd_flags & O_NOCTTY)
 		goto done;