From 8b09fd444f18b70e4525acfa664f029de3d5b8bb Mon Sep 17 00:00:00 2001
From: Felicitas Pojtinger <felicitas@pojtinger.com>
Date: Fri, 24 Dec 2021 17:05:05 +0100
Subject: [PATCH] fix: Support GID and UID on Windows

---
 internal/fs/filesystem.go | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/internal/fs/filesystem.go b/internal/fs/filesystem.go
index 2c34c68..3844b97 100644
--- a/internal/fs/filesystem.go
+++ b/internal/fs/filesystem.go
@@ -82,12 +82,22 @@ func (f *FileSystem) mknode(dir bool, name string, perm os.FileMode) error {
 
 	uid, err := strconv.Atoi(usr.Uid)
 	if err != nil {
-		return err
+		// Some OSes like i.e. Windows don't support numeric UIDs, so use 0 instead
+		if err == strconv.ErrSyntax {
+			uid = 0
+		} else {
+			return err
+		}
 	}
 
 	gid, err := strconv.Atoi(usr.Gid)
 	if err != nil {
-		return err
+		// Some OSes like i.e. Windows don't support numeric GIDs, so use 0 instead
+		if err == strconv.ErrSyntax {
+			gid = 0
+		} else {
+			return err
+		}
 	}
 
 	groups, err := usr.GroupIds()