From 35c2b49c2c196fd84ce01528209f89fdecdd079b Mon Sep 17 00:00:00 2001
From: Jonathan Bauer
Date: Wed, 16 Oct 2019 10:24:39 +0200
Subject: consider network shares in fs_path_isvolatile

---
 modules/fs/path.inc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/modules/fs/path.inc b/modules/fs/path.inc
index c067049..fd035b5 100644
--- a/modules/fs/path.inc
+++ b/modules/fs/path.inc
@@ -46,7 +46,15 @@ fs_path_isvolatile() {
 	[ -z "$1" ] && return 2
 	local _dev _mp
 	_dev="$(fs_path_getdev "$1")"
-	[ -z "$_dev" ] && return 0 # No result, assume tmpfs
+	if [ -z "$_dev" ]; then
+		# not backed by a device in /dev, check for network shares
+		local _mtype="$(fs_path_gettype "$1")"
+		if [ -n "$_mtype" ] && regex_imatch "$_mtype" '^(nfs.?|cifs)$'; then
+			return 1
+		fi
+		# Neither backed by a device nor a cifs/nfs share, assume tmpfs
+		return 0
+	fi
 	[ "$_dev" = "${_dev#/dev/zram}" ] || return 0 # zram is in RAM, like tmpfs
 	[ "$_dev" != "${_dev#/dev/mapper/}" ] || return 1 # Doesn't start with /dev/mapper, assume some kind of storage
 	[ -s "$DM_STATE_FILE" ] || return 2 # No point in continuing
-- 
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