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[PATCH] xfstests: set umask to avoid spurious generic/314 test failures

To: xfs@xxxxxxxxxxx
Subject: [PATCH] xfstests: set umask to avoid spurious generic/314 test failures
From: Eric Whitney <enwlinux@xxxxxxxxx>
Date: Sat, 21 Sep 2013 17:17:35 -0400
Cc: linux-ext4@xxxxxxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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User-agent: Mutt/1.5.21 (2010-09-15)
Generic/314 can fail when the group write file mode bit for "subdir" does not
match that found in the golden output, as has been seen in ext4 regression
testing.  It appears that the golden output for generic/314 was taken on a
system where the $qa_user's umask cleared that mode bit - most likely, where
the umask was 022.  Depending upon the distro, it's not uncommon for a user's
default umask to have a different value, such as 002.  When that's the case,
we get a false negative failure when the group write mode bit for "subdir" is
not cleared.  This failure is unrelated to the value of the SGID mode bit
that is the object of this test.

We could either require that $qa_user's account be configured in advance with
a umask of 022, or explicitly set a umask value compatible with the golden
output when creating "subdir".  The latter option is more robust.

Signed-off-by: Eric Whitney <enwlinux@xxxxxxxxx>
 tests/generic/314 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 mode change 100644 => 100755 tests/generic/314

diff --git a/tests/generic/314 b/tests/generic/314
old mode 100644
new mode 100755
index 0dd98a3..f430b82
--- a/tests/generic/314
+++ b/tests/generic/314
@@ -57,7 +57,7 @@ chown $qa_user:12345 $TEST_DIR/$seq-dir
 chmod 2775 $TEST_DIR/$seq-dir
 # Make subdirs before & after acl set
-su $qa_user -c "mkdir $TEST_DIR/$seq-dir/subdir"
+su $qa_user -c "umask 022; mkdir $TEST_DIR/$seq-dir/subdir"
 su $qa_user -c "setfacl -m u:$qa_user:rwx,d:u:$qa_user:rwx $TEST_DIR/$seq-dir"
 su $qa_user -c "mkdir $TEST_DIR/$seq-dir/subdir2"

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