[PATCH testsuite] tests/capable_sys: skip test_rawio on BTRFS

[Ondrej Mosnacek <omosnace@xxxxxxxxxx>]

BTRFS doesn't support the FIBMAP ioctl, which is used to test
CAP_SYS_RAWIO. It is already disabled for NFS, so disable that test also
on BTRFS.

Fedora 35 cloud images already have BTRFS volumes instead of ext4 and
this patch is needed to make the testsuite pass there.

Signed-off-by: Ondrej Mosnacek <omosnace@xxxxxxxxxx>
---
 tests/capable_sys/test | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tests/capable_sys/test b/tests/capable_sys/test
index cd50ebc..a72616d 100755
--- a/tests/capable_sys/test
+++ b/tests/capable_sys/test
@@ -9,10 +9,11 @@ BEGIN {
     $basedir = $0;
     $basedir =~ s|(.*)/[^/]*|$1|;
 
-    $isnfs = `stat -f --print %T $basedir`;
+    $fs          = `stat -f --print %T $basedir`;
+    $test_fibmap = $fs ne "btrfs" and $fs ne "nfs";
 
     $test_count = 7;
-    if ( $isnfs ne "nfs" ) {
+    if ($test_fibmap) {
         $test_count += 1;
     }
 
@@ -26,7 +27,7 @@ system "rm -f $basedir/temp_file 2>&1";
 # Tests for the good domain.
 #
 
-if ( $isnfs ne "nfs" ) {
+if ($test_fibmap) {
 
     # CAP_SYS_RAWIO
     system "touch $basedir/temp_file 2>&1";
-- 
2.31.1