[PATCH 12/24] overlay/020: make sure the system supports the required namespaces

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From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

Don't run this test if the kernel doesn't support namespaces.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 tests/overlay/020 |    6 ++++++
 1 file changed, 6 insertions(+)


diff --git a/tests/overlay/020 b/tests/overlay/020
index 85488b83..9029f042 100755
--- a/tests/overlay/020
+++ b/tests/overlay/020
@@ -32,10 +32,16 @@ rm -f $seqres.full
 
 # real QA test starts here
 
+require_unshare() {
+	unshare -f -r "$@" true &>/dev/null || \
+		_notrun "unshare $@: not supported"
+}
+
 # Modify as appropriate.
 _supported_fs overlay
 _supported_os Linux
 _require_scratch
+require_unshare -m -p -U
 
 # Remove all files from previous tests
 _scratch_mkfs




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