Fixed: Get real / mountpoint when running inside snap

snap/snapcraft.yaml

@@ -34,6 +34,7 @@ apps:
     environment:
       LC_ALL: C.UTF-8
       LANG: C.UTF-8
+      BTOP_SNAPPED: true
     plugs:
       - mount-observe
       - process-control

src/linux/btop_collect.cpp

@@ -679,6 +679,7 @@ namespace Mem {
 		auto& swap_disk = Config::getB("swap_disk");
 		auto& show_disks = Config::getB("show_disks");
 		auto& mem = current_mem;
+		static const bool snapped = (getenv("BTOP_SNAPPED") != NULL);
 
 		mem.stats.at("swap_total") = 0;
 
@@ -803,6 +804,14 @@ namespace Mem {
 						std::error_code ec;
 						diskread >> dev >> mountpoint >> fstype;
 
+						//? If running snapped, remove internal / mountpoint and replace /mnt with / to get correct device
+						if (snapped) {
+							if (mountpoint == "/")
+								continue;
+							else if (mountpoint == "/mnt")
+								mountpoint = "/";
+						}
+
 						//? Match filter if not empty
 						if (not filter.empty()) {
 							bool match = v_contains(filter, mountpoint);