[PATCH v3 1/8] overlayfs-qa: common functions for overlayfs

["Vyacheslav Yurkov" <uvv.mail@gmail.com>]

This class provides commom functions for overlayfs and its QA check,
which is performed in ROOTFS_POSTPROCESS_COMMAND

Signed-off-by: Vyacheslav Yurkov <uvv.mail@gmail.com>
---
 meta/classes/overlayfs-qa.bbclass | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 meta/classes/overlayfs-qa.bbclass

diff --git a/meta/classes/overlayfs-qa.bbclass b/meta/classes/overlayfs-qa.bbclass
new file mode 100644
index 0000000000..54fa8316a2
--- /dev/null
+++ b/meta/classes/overlayfs-qa.bbclass
@@ -0,0 +1,14 @@
+# This class contains common functions for overlayfs and its QA check,
+# which is performed in ROOTFS_POSTPROCESS_COMMAND
+
+# this function is based on https://github.com/systemd/systemd/blob/main/src/basic/unit-name.c
+def escapeSystemdUnitName(path):
+    escapeMap = {
+        '/': '-',
+        '-': "\\x2d",
+        '\\': "\\x5d"
+    }
+    return "".join([escapeMap.get(c, c) for c in path.strip('/')])
+
+def mountUnitName(unit):
+    return escapeSystemdUnitName(unit) + '.mount'
-- 
2.28.0