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-rw-r--r--lib/archroot.sh11
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/archroot.sh b/lib/archroot.sh
index 46d4963..87c28a2 100644
--- a/lib/archroot.sh
+++ b/lib/archroot.sh
@@ -25,6 +25,15 @@ is_btrfs() {
}
##
+# usage : is_subvolume( $path )
+# return : whether $path is a the root of a btrfs subvolume (including
+# the top-level subvolume).
+##
+is_subvolume() {
+ [[ -e "$1" && "$(stat -f -c %T "$1")" == btrfs && "$(stat -c %i "$1")" == 256 ]]
+}
+
+##
# usage : subvolume_delete_recursive( $path )
#
# Find all btrfs subvolumes under and including $path and delete them.
@@ -32,7 +41,7 @@ is_btrfs() {
subvolume_delete_recursive() {
local subvol
- is_btrfs "$1" || return 0
+ is_subvolume "$1" || return 0
while IFS= read -d $'\0' -r subvol; do
if ! btrfs subvolume delete "$subvol" &>/dev/null; then