From 4af64e157a7bd1daf34a2ea838abe66de9904546 Mon Sep 17 00:00:00 2001
From: Wildan M <willnode@wellosoft.net>
Date: Tue, 23 Sep 2025 23:34:26 +0700
Subject: [PATCH] Allow partial result of getdents

---
 src/mount/redox/resource.rs | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/mount/redox/resource.rs b/src/mount/redox/resource.rs
index 58f282944e..fc205cc1ed 100644
--- a/src/mount/redox/resource.rs
+++ b/src/mount/redox/resource.rs
@@ -251,9 +251,10 @@ impl<D: Disk> Resource<D> for DirResource {
     ) -> Result<DirentBuf<&'buf mut [u8]>> {
         match &self.data {
             Some(data) => {
-                for (idx, entry) in data.iter().enumerate().skip(opaque_offset as usize) {
+                let opaque_offset = opaque_offset as usize;
+                for (idx, entry) in data.iter().enumerate().skip(opaque_offset) {
                     let child = tx.read_tree(entry.node_ptr)?;
-                    buf.entry(DirEntry {
+                    let result = buf.entry(DirEntry {
                         inode: child.id() as u64,
                         next_opaque_id: idx as u64 + 1,
                         name: &entry.name,
@@ -264,7 +265,15 @@ impl<D: Disk> Resource<D> for DirResource {
                             //TODO: more types?
                             _ => DirentKind::Unspecified,
                         },
-                    })?;
+                    });
+                    if let Err(err) = result {
+                        if err.errno == EINVAL && idx > opaque_offset {
+                            // POSIX allows partial result of getdents
+                            break;
+                        } else {
+                            return Err(err);
+                        }
+                    }
                 }
                 Ok(buf)
             }