From: Eric Biggers <ebiggers@xxxxxxxxxx>
Add _filter_xfs_io_fiemap() to clean up the output of
'xfs_io -c fiemap'. This will be used by a function in common/verity.
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
common/filter | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/common/filter b/common/filter
index ed082d24..9ad43ff4 100644
--- a/common/filter
+++ b/common/filter
@@ -541,6 +541,30 @@ _filter_filefrag()
$flags, "\n"'
}
+# Clean up the extents list output of 'xfs_io -c fiemap', e.g.
+#
+# file:
+# 0: [0..79]: 628365312..628365391
+# 1: [80..159]: hole
+# 2: [160..319]: 628365472..628365631
+# =>
+# 0 79 628365312 628365391
+# 160 319 628365472 628365631
+#
+# The fields are:
+#
+# first_logical_block last_logical_block first_physical_block last_physical_block
+#
+# Blocks are 512 bytes, and holes are omitted.
+#
+_filter_xfs_io_fiemap()
+{
+ grep -E '^[[:space:]]+[0-9]+:' \
+ | grep -v '\<hole\>' \
+ | sed -E 's/^[[:space:]]+[0-9]+://' \
+ | tr '][.:' ' '
+}
+
# We generate WARNINGs on purpose when applications mix buffered/mmap IO with
# direct IO on the same file. This is a helper for _check_dmesg() to filter out
# such warnings.
--
2.22.0.410.gd8fdbe21b5-goog
