From c53a3e80170dc9d45beeeb623edfbf0bd40799a7 Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Tue, 7 Mar 2017 19:55:05 +0100
Subject: lib/archroot.sh: Add is_btrfs helper

---
 lib/archroot.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'lib')

diff --git a/lib/archroot.sh b/lib/archroot.sh
index 7d7ab67..14417aa 100644
--- a/lib/archroot.sh
+++ b/lib/archroot.sh
@@ -12,3 +12,11 @@ check_root() {
 		exec su root -c "$(printf ' %q' "${orig_argv[@]}")"
 	fi
 }
+
+##
+#  usage : is_btrfs( $path )
+# return : whether $path is on a btrfs
+##
+is_btrfs() {
+	[[ -e "$1" && "$(stat -f -c %T "$1")" == btrfs ]]
+}
-- 
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