From ed51c2a75178bde30fa59b1bca4ce9090a9c4349 Mon Sep 17 00:00:00 2001
From: Xoris <xmingwp@gmail.com>
Date: Sat, 15 Jun 2024 10:49:23 +0800
Subject: fix divide 0 error when caculating disk usage percentage (#791)

---
 src/freebsd/btop_collect.cpp | 9 +++++++--
 src/linux/btop_collect.cpp   | 9 +++++++--
 src/openbsd/btop_collect.cpp | 9 +++++++--
 src/osx/btop_collect.cpp     | 9 +++++++--
 4 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/src/freebsd/btop_collect.cpp b/src/freebsd/btop_collect.cpp
index b4034c7..29e54bf 100644
--- a/src/freebsd/btop_collect.cpp
+++ b/src/freebsd/btop_collect.cpp
@@ -771,8 +771,13 @@ namespace Mem {
 				disk.total = vfs.f_blocks * vfs.f_frsize;
 				disk.free = vfs.f_bfree * vfs.f_frsize;
 				disk.used = disk.total - disk.free;
-				disk.used_percent = round((double)disk.used * 100 / disk.total);
-				disk.free_percent = 100 - disk.used_percent;
+				if (disk.total != 0) {
+					disk.used_percent = round((double)disk.used * 100 / disk.total);
+					disk.free_percent = 100 - disk.used_percent;
+				} else {
+					disk.used_percent = 0;
+					disk.free_percent = 0;
+				}
 			}
 
 			//? Setup disks order in UI and add swap if enabled
diff --git a/src/linux/btop_collect.cpp b/src/linux/btop_collect.cpp
index d9f571f..0541357 100644
--- a/src/linux/btop_collect.cpp
+++ b/src/linux/btop_collect.cpp
@@ -1936,8 +1936,13 @@ namespace Mem {
 						disk.total = vfs.f_blocks * vfs.f_frsize;
 						disk.free = (free_priv ? vfs.f_bfree : vfs.f_bavail) * vfs.f_frsize;
 						disk.used = disk.total - disk.free;
-						disk.used_percent = round((double)disk.used * 100 / disk.total);
-						disk.free_percent = 100 - disk.used_percent;
+						if (disk.total != 0) {
+							disk.used_percent = round((double)disk.used * 100 / disk.total);
+							disk.free_percent = 100 - disk.used_percent;
+						} else {
+							disk.used_percent = 0;
+							disk.free_percent = 0;
+						}
 						return pair{disk, -1};
 					});
 					++it;
diff --git a/src/openbsd/btop_collect.cpp b/src/openbsd/btop_collect.cpp
index a8c395e..480b834 100644
--- a/src/openbsd/btop_collect.cpp
+++ b/src/openbsd/btop_collect.cpp
@@ -723,8 +723,13 @@ namespace Mem {
 				disk.total = vfs.f_blocks * vfs.f_frsize;
 				disk.free = vfs.f_bfree * vfs.f_frsize;
 				disk.used = disk.total - disk.free;
-				disk.used_percent = round((double)disk.used * 100 / disk.total);
-				disk.free_percent = 100 - disk.used_percent;
+				if (disk.total != 0) {
+					disk.used_percent = round((double)disk.used * 100 / disk.total);
+					disk.free_percent = 100 - disk.used_percent;
+				} else {
+					disk.used_percent = 0;
+					disk.free_percent = 0;
+				}
 			}
 
 			//? Setup disks order in UI and add swap if enabled
diff --git a/src/osx/btop_collect.cpp b/src/osx/btop_collect.cpp
index 8c65705..4d54e32 100644
--- a/src/osx/btop_collect.cpp
+++ b/src/osx/btop_collect.cpp
@@ -795,8 +795,13 @@ namespace Mem {
 				disk.total = vfs.f_blocks * vfs.f_frsize;
 				disk.free = vfs.f_bfree * vfs.f_frsize;
 				disk.used = disk.total - disk.free;
-				disk.used_percent = round((double)disk.used * 100 / disk.total);
-				disk.free_percent = 100 - disk.used_percent;
+				if (disk.total != 0) {
+					disk.used_percent = round((double)disk.used * 100 / disk.total);
+					disk.free_percent = 100 - disk.used_percent;
+				} else {
+					disk.used_percent = 0;
+					disk.free_percent = 0;
+				}
 			}
 
 			//? Setup disks order in UI and add swap if enabled
-- 
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