_filter_filefrag is a helper function to filter filefrag's output and it
can be used to get a file's file offset and physical offset.
Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
common/filter | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/common/filter b/common/filter
index 5fd71a8..1ef342b 100644
--- a/common/filter
+++ b/common/filter
@@ -418,5 +418,24 @@ _filter_ovl_dirs()
-e "s,$OVL_WORK,OVL_WORK,g"
}
+# interpret filefrag output,
+# eg. "physical 1234, length 10, logical 5678" -> "1234#10#5678"
+_filter_filefrag()
+{
+ perl -ne '
+ if (/blocks? of (\d+) bytes/) {
+ $blocksize = $1;
+ next
+ }
+ ($ext, $logical, $physical, $length) =
+ (/^\s*(\d+):\s+(\d+)..\s+\d+:\s+(\d+)..\s+\d+:\s+(\d+):/)
+ or next;
+ ($flags) = /.*:\s*(\S*)$/;
+ print $physical * $blocksize, "#",
+ $length * $blocksize, "#",
+ $logical * $blocksize, "#",
+ $flags, "\n"'
+}
+
# make sure this script returns success
/bin/true
--
2.5.0
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