From be9026442e4bef148ba8894b9ab8ea4d6159dcf3 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Wed, 12 Oct 2022 20:19:45 +0200
Subject: [PATCH] libc: Check for file descriptors 0 and 1, and if they exist
 do not close and reopen them

---
 libs/libc/src/init.cpp | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/libs/libc/src/init.cpp b/libs/libc/src/init.cpp
index 13b7356d..c77def4e 100644
--- a/libs/libc/src/init.cpp
+++ b/libs/libc/src/init.cpp
@@ -6,13 +6,22 @@
 
 extern "C" void initialize_libc()
 {
-    close(0);  // If it was already open, close it
-    close(1);  // If it was already open, close it
-    errno = 0; // If it was not open. the kernel will throw us EBADF. Let's ignore that, since we don't care.
-    stderr = fopen("/dev/console", "rw");
-    if (!stderr) exit(errno);
-    stdout = fopen("/dev/console", "rw");
-    if (!stdout) exit(errno);
-    clearerr(stderr);
-    clearerr(stdout);
+    if (lseek(0, 0, SEEK_CUR) < 0)
+    {
+        if (errno == EBADF) stdout = fopen("/dev/console", "rw");
+        else
+            exit(errno);
+        if (!stdout) exit(errno);
+        errno = 0;
+    }
+    else { stdout = fdopen(0, "rw"); }
+    if (lseek(1, 0, SEEK_CUR) < 0)
+    {
+        if (errno == EBADF) stderr = fopen("/dev/console", "rw");
+        else
+            exit(errno);
+        if (!stderr) exit(errno);
+        errno = 0;
+    }
+    else { stderr = fdopen(1, "rw"); }
 }
\ No newline at end of file