Add os specific stuff

os_darwin.go

@@ -0,0 +1,22 @@
+//go:build darwin
+// +build darwin
+
+package util
+
+import (
+	"os/user"
+	"path/filepath"
+)
+
+// IsSuperUser returns true, if the current user is a super user
+// A.K.A root, Administrator etc
+func IsSuperUser() bool {
+	cuser, err := user.Current()
+	return err == nil && "0" == cuser.Uid
+}
+
+// GetGlobalConfigurationDirectory returns OS specific location for putting
+// global configuration files
+func GetGlobalConfigurationDirectory(appname string) string {
+	return filepath.Join("/etc", appname)
+}

os_linux.go

@@ -0,0 +1,22 @@
+//go:build linux
+// +build linux
+
+package util
+
+import (
+	"os/user"
+	"path/filepath"
+)
+
+// IsSuperUser returns true, if the current user is a super user
+// A.K.A root, Administrator etc
+func IsSuperUser() bool {
+	cuser, err := user.Current()
+	return err == nil && "0" == cuser.Uid
+}
+
+// GetGlobalConfigurationDirectory returns OS specific location for putting
+// global configuration files
+func GetGlobalConfigurationDirectory(appname string) string {
+	return filepath.Join("/etc", appname)
+}

os_windows.go

@@ -0,0 +1,25 @@
+//go:build windows
+// +build windows
+
+package util
+
+import (
+	"os"
+	"path/filepath"
+)
+
+// IsSuperUser returns true, if the current user is a super user
+// A.K.A root, Administrator etc
+func IsSuperUser() bool {
+	_, err := os.Open("\\\\.\\PHYSICALDRIVE0")
+	if err != nil {
+		return false
+	}
+	return true
+}
+
+// GetGlobalConfigurationDirectory returns OS specific location for putting
+// global configuration files
+func GetGlobalConfigurationDirectory(appname string) string {
+	return filepath.Join(os.Getenv("APPDATA"), appname)
+}