file-restore: Add 'v' (Virtual) ArchiveEntry type

For the actual partitions and blockdevices in a backup, which the
user sees like folders in the file-restore ui

Encoded as "None", to avoid cluttering DirEntryAttribute, where it
wouldn't make any sense to have.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

src/api2/helpers.rs

@@ -48,7 +48,7 @@ pub fn list_dir_content<R: Read + Seek>(
         let mut components = path.clone();
         components.push(b'/');
         components.extend(&direntry.name);
-        let mut entry = ArchiveEntry::new(&components, &direntry.attr);
+        let mut entry = ArchiveEntry::new(&components, Some(&direntry.attr));
         if let DirEntryAttribute::File { size, mtime } = direntry.attr {
             entry.size = size.into();
             entry.mtime = mtime.into();

src/api2/types/mod.rs

@@ -1354,19 +1354,22 @@ pub struct ArchiveEntry {
 }
 
 impl ArchiveEntry {
-    pub fn new(filepath: &[u8], entry_type: &DirEntryAttribute) -> Self {
+    pub fn new(filepath: &[u8], entry_type: Option<&DirEntryAttribute>) -> Self {
         Self {
             filepath: base64::encode(filepath),
             text: String::from_utf8_lossy(filepath.split(|x| *x == b'/').last().unwrap())
                 .to_string(),
-            entry_type: CatalogEntryType::from(entry_type).to_string(),
+            entry_type: match entry_type {
-            leaf: !matches!(entry_type, DirEntryAttribute::Directory { .. }),
+                Some(entry_type) => CatalogEntryType::from(entry_type).to_string(),
+                None => "v".to_owned(),
+            },
+            leaf: !matches!(entry_type, None | Some(DirEntryAttribute::Directory { .. })),
             size: match entry_type {
-                DirEntryAttribute::File { size, .. } => Some(*size),
+                Some(DirEntryAttribute::File { size, .. }) => Some(*size),
                 _ => None
             },
             mtime: match entry_type {
-                DirEntryAttribute::File { mtime, .. } => Some(*mtime),
+                Some(DirEntryAttribute::File { mtime, .. }) => Some(*mtime),
                 _ => None
             },
         }

src/bin/proxmox-file-restore.rs

@@ -174,8 +174,13 @@ async fn list(
                     continue;
                 }
                 let path = format!("/{}", file.filename);
-                let attr = DirEntryAttribute::Directory { start: 0 };
+                let attr = if file.filename.ends_with(".pxar.didx") {
-                entries.push(ArchiveEntry::new(path.as_bytes(), &attr));
+                    // a pxar file is a file archive, so it's root is also a directory root
+                    Some(&DirEntryAttribute::Directory { start: 0 })
+                } else {
+                    None
+                };
+                entries.push(ArchiveEntry::new(path.as_bytes(), attr));
             }
 
             Ok(entries)

src/bin/proxmox_restore_daemon/api.rs

@@ -148,7 +148,7 @@ fn list(
             match root_entry {
                 DirEntryAttribute::File { .. } => {
                     // list on file, return details
-                    res.push(ArchiveEntry::new(&param_path, &root_entry));
+                    res.push(ArchiveEntry::new(&param_path, Some(&root_entry)));
                 }
                 DirEntryAttribute::Directory { .. } => {
                     // list on directory, return all contained files/dirs
@@ -176,7 +176,7 @@ fn list(
                             if let Ok(entry) = entry {
                                 res.push(ArchiveEntry::new(
                                     full_path.as_os_str().as_bytes(),
-                                    &entry,
+                                    Some(&entry),
                                 ));
                             }
                         }
@@ -192,7 +192,7 @@ fn list(
                 t_path.extend(t.as_bytes());
                 res.push(ArchiveEntry::new(
                     &t_path[..],
-                    &DirEntryAttribute::Directory { start: 0 },
+                    None,
                 ));
             }
         }
@@ -203,7 +203,8 @@ fn list(
                 c_path.extend(c.as_bytes());
                 res.push(ArchiveEntry::new(
                     &c_path[..],
-                    &DirEntryAttribute::Directory { start: 0 },
+                    // this marks the beginning of a filesystem, i.e. '/', so this is a Directory
+                    Some(&DirEntryAttribute::Directory { start: 0 }),
                 ));
             }
         }