WebDAV error handling improvements: map_vfs_error helper

- Add map_vfs_error() to map VfsError to FsError properly
- NotFound → NotFound, PermissionDenied → Forbidden, etc.
- Update create_dir/remove_dir/remove_file/rename/set_atime/set_mtime/get_quota
- Add executable() method to VfsDavMetaData (mode & 0o111)

Tests: 288 passed, 0 failed

markbase-core/src/webdav.rs

@@ -22,6 +22,19 @@ use std::time::SystemTime;
 
 use crate::webdav_locks::PersistedLs;
 
+fn map_vfs_error(e: VfsError) -> FsError {
+    match e {
+        VfsError::NotFound(_) => FsError::NotFound,
+        VfsError::PermissionDenied(_) => FsError::Forbidden,
+        VfsError::Unsupported(_) => FsError::NotImplemented,
+        VfsError::AlreadyExists(_) => FsError::Exists,
+        VfsError::NotEmpty(_) => FsError::Forbidden,
+        VfsError::NotADirectory(_) => FsError::Forbidden,
+        VfsError::IsADirectory(_) => FsError::Forbidden,
+        VfsError::Io(_) | VfsError::UnexpectedEof => FsError::GeneralFailure,
+    }
+}
+
 /// Expected credentials for WebDAV Basic Auth validation
 #[derive(Clone)]
 pub struct WebdavCredentials {
@@ -231,6 +244,7 @@ pub struct VfsDavMetaData {
     is_dir: bool,
     modified: SystemTime,
     accessed: SystemTime,
+    mode: u32,
 }
 
 impl VfsDavMetaData {
@@ -241,6 +255,7 @@ impl VfsDavMetaData {
             is_dir,
             modified: now,
             accessed: now,
+            mode: 0o644,
         }
     }
 
@@ -250,6 +265,7 @@ impl VfsDavMetaData {
             is_dir: stat.is_dir,
             modified: stat.mtime,
             accessed: stat.atime,
+            mode: stat.mode,
         }
     }
 }
@@ -270,6 +286,10 @@ impl DavMetaData for VfsDavMetaData {
     fn accessed(&self) -> Result<SystemTime, FsError> {
         Ok(self.accessed)
     }
+
+    fn executable(&self) -> Result<bool, FsError> {
+        Ok(!self.is_dir && (self.mode & 0o111 != 0))
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -659,7 +679,7 @@ impl DavFileSystem for VfsDavFs {
         }
         match self.vfs.create_dir_all(&full_path, 0o755) {
             Ok(_) => Box::pin(std::future::ready(Ok(()))),
-            Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),
+            Err(e) => Box::pin(std::future::ready(Err(map_vfs_error(e)))),
         }
     }
 
@@ -670,7 +690,7 @@ impl DavFileSystem for VfsDavFs {
         };
         match self.vfs.remove_dir_all(&full_path) {
             Ok(_) => Box::pin(std::future::ready(Ok(()))),
-            Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),
+            Err(e) => Box::pin(std::future::ready(Err(map_vfs_error(e)))),
         }
     }
 
@@ -681,7 +701,7 @@ impl DavFileSystem for VfsDavFs {
         };
         match self.vfs.remove_file(&full_path) {
             Ok(_) => Box::pin(std::future::ready(Ok(()))),
-            Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),
+            Err(e) => Box::pin(std::future::ready(Err(map_vfs_error(e)))),
         }
     }
 
@@ -706,7 +726,7 @@ impl DavFileSystem for VfsDavFs {
                 }
                 Box::pin(std::future::ready(Ok(())))
             }
-            Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),
+            Err(e) => Box::pin(std::future::ready(Err(map_vfs_error(e)))),
         }
     }
 
@@ -717,7 +737,7 @@ impl DavFileSystem for VfsDavFs {
         };
         match self.vfs.set_atime(&resolved, tm) {
             Ok(_) => Box::pin(std::future::ready(Ok(()))),
-            Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),
+            Err(e) => Box::pin(std::future::ready(Err(map_vfs_error(e)))),
         }
     }
 
@@ -728,7 +748,7 @@ impl DavFileSystem for VfsDavFs {
         };
         match self.vfs.set_mtime(&resolved, tm) {
             Ok(_) => Box::pin(std::future::ready(Ok(()))),
-            Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),
+            Err(e) => Box::pin(std::future::ready(Err(map_vfs_error(e)))),
         }
     }
 
@@ -855,15 +875,23 @@ impl DavFileSystem for VfsDavFs {
     }
 
     fn get_quota(&'_ self) -> FsFuture<'_, (u64, Option<u64>)> {
-        let used = self.vfs.get_quota_usage(&self.root);
-        let total = self.vfs.get_quota(&self.root);
+        let root = self.root.clone();
+        let vfs = self.vfs.clone_boxed();
         Box::pin(async move {
+            let used = vfs.get_quota_usage(&root);
+            let total = vfs.get_quota(&root);
             match (used, total) {
                 (Ok(usage), Ok(quota)) => {
                     let limit = if quota.space_limit > 0 { Some(quota.space_limit) } else { None };
                     Ok((usage.space_used, limit))
                 }
-                _ => Err(FsError::NotImplemented),
+                (Err(VfsError::NotFound(_)), _) | (_, Err(VfsError::NotFound(_))) => {
+                    Err(FsError::NotFound)
+                }
+                (Err(VfsError::Unsupported(_)), _) | (_, Err(VfsError::Unsupported(_))) => {
+                    Err(FsError::NotImplemented)
+                }
+                _ => Err(FsError::GeneralFailure),
             }
         })
     }