From 0f30d227497418c6d3bef7d52244407e30454504 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Mon, 22 Dec 2025 23:27:56 +0100
Subject: Added c11 threads, fixed some locks and add *_unlocked functions

---
 lib/libc/stdio/fflush.c | 73 +++++--------------------------------------------
 1 file changed, 7 insertions(+), 66 deletions(-)

(limited to 'lib/libc/stdio/fflush.c')

diff --git a/lib/libc/stdio/fflush.c b/lib/libc/stdio/fflush.c
index 1cf4b7bd..b3fca8bd 100644
--- a/lib/libc/stdio/fflush.c
+++ b/lib/libc/stdio/fflush.c
@@ -3,74 +3,15 @@
 
 #include <atomic.h> // for LIBC_UNLOCK, LIBC_LOCK
 #include <errno.h>  // for errno, EBADF, EIO
-#include <fcntl.h>  // for O_ACCMODE, O_RDONLY
-#include <stdio.h>  // for EOF, FILE, fflush
-#include <string.h> // for memmove
-#include <unistd.h> // for size_t, write, ssize_t
+#include <stdio.h>
 
-int fflush(FILE *stream)
+int fflush(struct __FILE *stream)
 {
-	if (stream == NULL) {
-		// TODO: Implement flushing all open streams
-		// For now, just return success
-		return 0;
-	}
+	int r;
 
-	if (__FILE(stream)->buf_len == 0) {
-		return 0;
-	}
+	flockfile(stream);
+	r = fflush_unlocked(stream);
+	funlockfile(stream);
 
-	if (__FILE(stream)->fd == -1) {
-		__FILE(stream)->buf_len = 0;
-		return 0;
-	}
-
-	if (__FILE(stream)->flags & _IO_ERR) {
-		errno = EIO;
-		return EOF;
-	}
-
-	if ((__FILE(stream)->flags & O_ACCMODE) == O_RDONLY) {
-		errno = EBADF;
-		return EOF;
-	}
-
-	LIBC_LOCK(__FILE(stream)->lock);
-
-	size_t bytes_to_write = __FILE(stream)->buf_len;
-	size_t total_written = 0;
-	char *buf_ptr = __FILE(stream)->buf;
-
-	while (total_written < bytes_to_write) {
-		ssize_t result = write(__FILE(stream)->fd,
-				       buf_ptr + total_written,
-				       bytes_to_write - total_written);
-
-		if (result < 0) {
-			__FILE(stream)->flags |= _IO_ERR;
-			LIBC_UNLOCK(__FILE(stream)->lock);
-			return EOF;
-		}
-
-		if (result == 0) {
-			break;
-		}
-
-		total_written += result;
-	}
-
-	if (total_written == bytes_to_write) {
-		__FILE(stream)->buf_len = 0;
-		__FILE(stream)->buf_pos = 0;
-	} else {
-		size_t remaining = bytes_to_write - total_written;
-		memmove(__FILE(stream)->buf,
-			__FILE(stream)->buf + total_written, remaining);
-		__FILE(stream)->buf_len = remaining;
-		__FILE(stream)->buf_pos = 0;
-	}
-
-	LIBC_UNLOCK(__FILE(stream)->lock);
-
-	return (total_written == bytes_to_write) ? 0 : EOF;
+	return r;
 }
-- 
cgit v1.2.3