From 934c30d35a3ca0e0bf6cd8709d779e060e27f6d2 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Sat, 23 Nov 2024 14:59:26 +0100
Subject: libc: Add append to f(d)open and other fixes

---
 userland/libc/stdio/fwrite.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'userland/libc/stdio/fwrite.c')

diff --git a/userland/libc/stdio/fwrite.c b/userland/libc/stdio/fwrite.c
index 6499529..d2086cb 100644
--- a/userland/libc/stdio/fwrite.c
+++ b/userland/libc/stdio/fwrite.c
@@ -2,6 +2,11 @@
 #include <sys/types.h>
 
 size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream) {
+  if (!stream->has_control_over_the_fd) {
+    if (stream->append) {
+      fseek(stream, 0, SEEK_END);
+    }
+  }
   // FIXME: Check for overflow
   size_t bytes_to_write = nmemb * size;
   size_t rc = stream->write(stream, ptr, bytes_to_write);
-- 
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