add_inode: handle non-resident EAs

maharmstone · Oct 6, 2021 · 4d0239a · 4d0239a
1 parent 9b0e376
commit 4d0239a
Showing 1 changed file with 17 additions and 4 deletions.
diff --git a/src/ntfs2btrfs.cpp b/src/ntfs2btrfs.cpp
@@ -2214,12 +2214,25 @@ static void add_inode(root& r, uint64_t inode, uint64_t ntfs_inode, bool& is_dir
  }
 
  case ntfs_attribute::EA: {
+ buffer_t eabuf;
+ string_view sv;
+
  if (att.FormCode == NTFS_ATTRIBUTE_FORM::NONRESIDENT_FORM) {
- add_warning("FIXME non-resident EA");
- break;
- }
+ list<mapping> ea_mappings;
+
+ read_nonresident_mappings(att, ea_mappings, cluster_size, att.Form.Nonresident.ValidDataLength);
+
+ eabuf.resize((size_t)sector_align(att.Form.Nonresident.FileSize, cluster_size));
+ memset(eabuf.data(), 0, eabuf.size());
 
- auto sv = res_data;
+ for (const auto& m : ea_mappings) {
+ dev.seek(m.lcn * cluster_size);
+ dev.read(eabuf.data() + (m.vcn * cluster_size), (size_t)(m.length * cluster_size));
+ }
+
+ sv = string_view((char*)eabuf.data(), (size_t)att.Form.Nonresident.FileSize);
+ } else
+ sv = res_data;
 
  do {
  auto& ead = *(ea_data*)sv.data();