From 1e370dbbdce5b66fe61109433a5e5a155ea28ea9 Mon Sep 17 00:00:00 2001
From: Craig Rodrigues <rodrigc@FreeBSD.org>
Date: Sat, 9 Dec 2006 17:21:25 +0000
Subject: [PATCH] Use vfs_mount_error() in a few places to give more
 descriptive mount error messages.

---
 sys/fs/unionfs/union_vfsops.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sys/fs/unionfs/union_vfsops.c b/sys/fs/unionfs/union_vfsops.c
index 2aa7a9c4a88f..70634c805c90 100644
--- a/sys/fs/unionfs/union_vfsops.c
+++ b/sys/fs/unionfs/union_vfsops.c
@@ -139,14 +139,18 @@ unionfs_domount(struct mount *mp, struct thread *td)
 	copymode = UNIONFS_TRADITIONAL;	/* default */
 	ndp = &nd;
 
-	if (mp->mnt_flag & MNT_ROOTFS)
+	if (mp->mnt_flag & MNT_ROOTFS) {
+		vfs_mount_error(mp, "Cannot union mount root filesystem");
 		return (EOPNOTSUPP);
+	}
 
 	/*
 	 * Update is a no operation.
 	 */
-	if (mp->mnt_flag & MNT_UPDATE)
+	if (mp->mnt_flag & MNT_UPDATE) {
+		vfs_mount_error(mp, "unionfs does not support mount update");
 		return (EOPNOTSUPP);
+	}
 
 	/*
 	 * Get argument