Cross-platform acltype

The acltype property is currently hidden on FreeBSD and does not
reflect the NFSv4 style ZFS ACLs used on the platform.  This makes it
difficult to observe that a pool imported from FreeBSD on Linux has a
different type of ACL that is being ignored, and vice versa.

Add an nfsv4 acltype and expose the property on FreeBSD.

Make the default acltype nfsv4 on FreeBSD.

Setting acltype to an unhanded style is treated the same as setting
it to off.  The ACLs will not be removed, but they will be ignored.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10520

tests/zfs-tests/tests/functional/cli_user/misc/misc.cfg

@@ -49,7 +49,7 @@ if is_linux; then
 
 	# these are an alternate set of property values
 	PROP_ALTVALS="\
-		off		off		 \
+		nfsv4		off		 \
 		fletcher4	lzjb				off \
 		off		/tmp/zfstest	100M		off \
 		512		10m		off		 \
@@ -74,7 +74,7 @@ elif is_freebsd; then
 
 	# these are an alternate set of property values
 	PROP_ALTVALS="\
-		off		off		 \
+		nfsv4		off		 \
 		fletcher4	lzjb				off \
 		off		/tmp/zfstest	100M		off \
 		512		10m		off		 \

tests/zfs-tests/tests/functional/history/history_002_pos.ksh

@@ -73,7 +73,7 @@ props=(
 	mountpoint	none		compression	lz4
 	compression	on		compression	off
 	compression	lzjb		acltype		off
-	acltype		posix		xattr		sa
+	acltype		posix		acltype		nfsv4
 	atime		on		atime		off
 	devices		on		devices		off
 	exec		on		exec		off
@@ -84,11 +84,11 @@ props=(
 	aclinherit	discard		aclinherit	noallow
 	aclinherit	secure		aclinherit	passthrough
 	canmount	off		canmount	on
-	xattr		on		xattr		off
 	compression	gzip		compression	gzip-$((RANDOM%9 + 1))
 	compression     zstd		compression	zstd-$((RANDOM%9 + 1))
 	compression	zstd-fast	copies          $((RANDOM%3 + 1))
-	compression	zstd-fast-$((RANDOM%9 + 1))
+	compression	zstd-fast-$((RANDOM%9 + 1))	xattr	sa
+	xattr		on		xattr		off
 )
 elif is_freebsd; then
 #	property	value		property	value
@@ -115,7 +115,8 @@ props=(
 	compression	gzip		compression	gzip-$((RANDOM%9 + 1))
 	compression     zstd		compression	zstd-$((RANDOM%9 + 1))
 	compression	zstd-fast	copies          $((RANDOM%3 + 1))
-	compression	zstd-fast-$((RANDOM%9 + 1))
+	compression	zstd-fast-$((RANDOM%9 + 1))	acltype	off
+	acltype		posix		acltype		nfsv4
 )
 else
 #	property	value		property	value

tests/zfs-tests/tests/functional/rsend/rsend_012_pos.ksh

@@ -116,7 +116,7 @@ for fs in "$POOL" "$POOL/pclone" "$POOL/$FS" "$POOL/$FS/fs1" \
 	"$POOL/$FS/fs1/fs2" "$POOL/$FS/fs1/fclone" ; do
 	rand_set_prop $fs aclinherit "discard" "noallow" "secure" "passthrough"
 	rand_set_prop $fs checksum "on" "off" "fletcher2" "fletcher4" "sha256"
-	rand_set_prop $fs acltype "off" "posix" "noacl" "posixacl"
+	rand_set_prop $fs acltype "off" "posix" "nfsv4" "noacl" "posixacl"
 	rand_set_prop $fs atime "on" "off"
 	rand_set_prop $fs checksum "on" "off" "fletcher2" "fletcher4" "sha256"
 	rand_set_prop $fs compression "${compress_prop_vals[@]}"