fallback to device-tree when DMI informations are not available

zcalusic · Nov 17, 2024 · b168734 · b168734
1 parent 86e1735
commit b168734
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/product.go b/product.go
@@ -27,4 +27,18 @@ func (si *SysInfo) getProductInfo() {
 	if err == nil {
 		si.Product.UUID = uid
 	}
+
+	// try a fallback to device-tree (ex: dmi is not available on ARM devices)
+	// full details: https://www.devicetree.org/specifications/
+
+	// on linux root path is /proc/device-tree (see: https://github.com/torvalds/linux/blob/v5.9/Documentation/ABI/testing/sysfs-firmware-ofw)
+	if si.Product.Name == "" {
+		si.Product.Name = slurpFile("/proc/device-tree/model")
+	}
+
+	if si.Product.Serial == "" {
+		si.Product.Serial = slurpFile("/proc/device-tree/serial-number")
+	}
+
+
 }
diff --git a/util.go b/util.go
@@ -16,7 +16,8 @@ func slurpFile(path string) string {
 		return ""
 	}
 
-	return strings.TrimSpace(string(data))
+	// Trim spaces & \u0000 \uffff
+	return strings.Trim( string(data), " \r\n\t\u0000\uffff")
 }
 
 // Write one-liner text files, add newline, ignore errors (best effort).