From 3237efc661a2304eef12a86c2f581a26c1c440c2 Mon Sep 17 00:00:00 2001
From: Tim Schumacher <timschumi@gmx.de>
Date: Wed, 26 May 2021 12:34:05 +0200
Subject: [PATCH] LibC: Implement __fseterr

---
 Userland/Libraries/LibC/bits/stdio_file_implementation.h | 1 +
 Userland/Libraries/LibC/stdio.cpp                        | 6 ++++++
 Userland/Libraries/LibC/stdio_ext.h                      | 1 +
 3 files changed, 8 insertions(+)

diff --git a/Userland/Libraries/LibC/bits/stdio_file_implementation.h b/Userland/Libraries/LibC/bits/stdio_file_implementation.h
index cdccefdf206e9e..1b2d72a0645d8e 100644
--- a/Userland/Libraries/LibC/bits/stdio_file_implementation.h
+++ b/Userland/Libraries/LibC/bits/stdio_file_implementation.h
@@ -44,6 +44,7 @@ struct FILE {
 
     int error() const { return m_error; }
     void clear_err() { m_error = 0; }
+    void set_err() { m_error = 1; }
 
     size_t read(u8*, size_t);
     size_t write(u8 const*, size_t);
diff --git a/Userland/Libraries/LibC/stdio.cpp b/Userland/Libraries/LibC/stdio.cpp
index e7306f9008fb93..dd265a22755c96 100644
--- a/Userland/Libraries/LibC/stdio.cpp
+++ b/Userland/Libraries/LibC/stdio.cpp
@@ -1369,6 +1369,12 @@ void __freadptrinc(FILE* stream, size_t increment)
 
     stream->readptr_increase(increment);
 }
+
+void __fseterr(FILE* stream)
+{
+    ScopedFileLock lock(stream);
+    stream->set_err();
+}
 }
 
 template bool FILE::gets<u8>(u8*, size_t);
diff --git a/Userland/Libraries/LibC/stdio_ext.h b/Userland/Libraries/LibC/stdio_ext.h
index 9966f2262f7b53..b03b3dbec40c1c 100644
--- a/Userland/Libraries/LibC/stdio_ext.h
+++ b/Userland/Libraries/LibC/stdio_ext.h
@@ -18,5 +18,6 @@ void __fpurge(FILE*);
 size_t __freadahead(FILE*);
 char const* __freadptr(FILE*, size_t*);
 void __freadptrinc(FILE*, size_t);
+void __fseterr(FILE*);
 
 __END_DECLS