From c77e752a821fa49d383543f6ce92515ff1dc14cc Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Sat, 15 Oct 2022 10:28:52 +0200
Subject: [PATCH] libc: Implement fileno()

---
 libs/libc/include/stdio.h | 3 +++
 libs/libc/src/file.cpp    | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/libs/libc/include/stdio.h b/libs/libc/include/stdio.h
index abed2254..768a60f5 100644
--- a/libs/libc/include/stdio.h
+++ b/libs/libc/include/stdio.h
@@ -40,6 +40,9 @@ extern "C"
     /* Returns a new file associated with the file descriptor fd. */
     FILE* fdopen(int fd, const char* mode);
 
+    /* Returns the file descriptor associated with the file stream. */
+    int fileno(FILE* stream);
+
     /* Writes formatted output according to the string format to the file stream. */
     int fprintf(FILE* stream, const char* format, ...);
 
diff --git a/libs/libc/src/file.cpp b/libs/libc/src/file.cpp
index 206d4f5d..60e5ac45 100644
--- a/libs/libc/src/file.cpp
+++ b/libs/libc/src/file.cpp
@@ -53,6 +53,11 @@ extern "C"
         return stream;
     }
 
+    int fileno(FILE* stream)
+    {
+        return stream->f_fd;
+    }
+
     size_t fread(void* buf, size_t size, size_t nmemb, FILE* stream)
     {
         ssize_t status = read(stream->f_fd, buf, size * nmemb);