ZTS: Fix incorrect is_physical_device usage

This check isn't meant to be used for command substitution.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9844

tests/zfs-tests/include/blkdev.shlib

@@ -259,7 +259,7 @@ function get_device_dir #device
 {
 	typeset device=$1
 
-	if ! is_freebsd && ! $(is_physical_device $device) ; then
+	if ! is_freebsd && ! is_physical_device $device; then
 		if [[ $device != "/" ]]; then
 			device=${device%/*}
 		fi

tests/zfs-tests/tests/functional/cli_root/zpool_add/setup.ksh

@@ -34,7 +34,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/cli_root/zpool_create/setup.ksh

@@ -34,7 +34,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/cli_root/zpool_destroy/zpool_destroy_001_pos.ksh

@@ -61,7 +61,7 @@ function cleanup
 
 set -A datasets "$TESTPOOL" "$TESTPOOL2"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This case cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/cli_root/zpool_export/setup.ksh

@@ -30,7 +30,7 @@
 
 DISK=${DISKS%% *}
 
-if ! $(is_physical_device $DISK) ; then
+if ! is_physical_device $DISK; then
 	log_unsupported "Only partitionable physical disks can be used"
 fi
 

tests/zfs-tests/tests/functional/cli_root/zpool_import/setup.ksh

@@ -35,7 +35,7 @@
 verify_runnable "global"
 verify_disk_count "$DISKS" 2
 
-if ! $(is_physical_device $ZFS_DISK1) ; then
+if ! is_physical_device $ZFS_DISK1; then
 	log_unsupported "Only partitionable physical disks can be used"
 fi
 

tests/zfs-tests/tests/functional/write_dirs/setup.ksh

@@ -34,7 +34,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_001_neg.ksh

@@ -45,7 +45,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_003_neg.ksh

@@ -46,7 +46,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_004_pos.ksh

@@ -45,7 +45,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_005_neg.ksh

@@ -45,7 +45,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi
 

tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_006_pos.ksh

@@ -45,7 +45,7 @@
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
+if ! is_physical_device $DISKS; then
 	log_unsupported "This directory cannot be run on raw files."
 fi