got zero-copy partitioning to work w/ btrfs and sfdisk

1 files changed, 22 insertions, 0 deletions

diff --git a/btrcat b/btrcat
new file mode 100755
index 0000000..f25c75f
--- /dev/null
+++ b/btrcat
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+btrcat()
+{
+        [ $# -ge 2 ] || return
+
+        local src dst
+        dst=${!#}
+        truncate -s0 "$dst" || return
+
+        while [ $# -ge 2 ]
+        do
+                src=$1
+                ficlonerange.py "$src" "$dst" || return
+                shift
+        done
+}
+
+set -e
+which ficlonerange.py >/dev/null
+
+btrcat "$@"