Kernel: Return bytes written if sys$write() fails after writing some

If we wrote anything we should just inform userspace that we did, and not worry about the error code. Userspace can call us again if it wants, and we'll give them the error then.
cubiclove · Feb 29, 2020 · 4badef8 · 4badef8
1 parent 70b940c
commit 4badef8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
@@ -1695,8 +1695,8 @@ ssize_t Process::do_write(FileDescription& description, const u8* data, int data
  dbg() << " -> write returned " << rc;
 #endif
  if (rc < 0) {
- // FIXME: Support returning partial nwritten with errno.
- ASSERT(nwritten == 0);
+ if (nwritten)
+  return nwritten;
  return rc;
  }
  if (rc == 0)