add volume_serial_number on disk for Windows

src/common.rs

@@ -2419,6 +2419,20 @@ impl Disk {
         self.inner.mount_point()
     }
 
+    /// Returns the volume serial number.
+    ///
+    /// ```no_run
+    /// use sysinfo::Disks;
+    ///
+    /// let disks = Disks::new_with_refreshed_list();
+    /// for disk in disks.list() {
+    ///     println!("[{:?}] {:?}", disk.name(), disk.volume_serial_number());
+    /// }
+    /// ```
+    pub fn volume_serial_number(&self) -> &String {
+        self.inner.volume_serial_number()
+    }
+
     /// Returns the total disk size, in bytes.
     ///
     /// ```no_run

src/debug.rs

@@ -37,11 +37,12 @@ impl fmt::Debug for Disk {
     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(
             fmt,
-            "Disk({:?})[FS: {:?}][Type: {:?}][removable: {}] mounted on {:?}: {}/{} B",
+            "Disk({:?})[FS: {:?}][Type: {:?}][removable: {}] [VSN: {}] mounted on {:?}: {}/{} B",
             self.name(),
             self.file_system(),
             self.kind(),
             if self.is_removable() { "yes" } else { "no" },
+            self.volume_serial_number(),
             self.mount_point(),
             self.available_space(),
             self.total_space(),

src/windows/disk.rs

@@ -122,6 +122,7 @@ pub(crate) struct DiskInner {
     file_system: OsString,
     mount_point: Vec<u16>,
     s_mount_point: OsString,
+    volume_serial_number: String,
     total_space: u64,
     available_space: u64,
     is_removable: bool,
@@ -144,6 +145,10 @@ impl DiskInner {
         self.s_mount_point.as_ref()
     }
 
+    pub(crate) fn volume_serial_number(&self) -> &String {
+        &self.volume_serial_number
+    }
+
     pub(crate) fn total_space(&self) -> u64 {
         self.total_space
     }
@@ -239,10 +244,11 @@ pub(crate) unsafe fn get_list() -> Vec<Disk> {
             }
             let mut name = [0u16; MAX_PATH as usize + 1];
             let mut file_system = [0u16; 32];
+            let mut volume_serial_number = 0u32;
             let volume_info_res = GetVolumeInformationW(
                 raw_volume_name,
                 Some(&mut name),
-                None,
+                Some(&mut volume_serial_number),
                 None,
                 None,
                 Some(&mut file_system),
@@ -312,6 +318,7 @@ pub(crate) unsafe fn get_list() -> Vec<Disk> {
 
             let name = os_string_from_zero_terminated(&name);
             let file_system = os_string_from_zero_terminated(&file_system);
+            let volume_serial_number = format!("{:0>8}", format!("{:X}", volume_serial_number));
             mount_paths
                 .into_iter()
                 .map(move |mount_path| Disk {
@@ -321,6 +328,7 @@ pub(crate) unsafe fn get_list() -> Vec<Disk> {
                         file_system: file_system.clone(),
                         s_mount_point: OsString::from_wide(&mount_path[..mount_path.len() - 1]),
                         mount_point: mount_path,
+                        volume_serial_number: volume_serial_number.clone(),
                         total_space,
                         available_space,
                         is_removable,