1 files changed, 38 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/stdio/fclose.c b/libc-top-half/musl/src/stdio/fclose.c
new file mode 100644
index 0000000..d594532
--- /dev/null
+++ b/libc-top-half/musl/src/stdio/fclose.c
@@ -0,0 +1,38 @@
+#include "stdio_impl.h"
+#include <stdlib.h>
+
+static void dummy(FILE *f) { }
+weak_alias(dummy, __unlist_locked_file);
+
+int fclose(FILE *f)
+{
+	int r;
+	
+	FLOCK(f);
+	r = fflush(f);
+	r |= f->close(f);
+	FUNLOCK(f);
+
+	/* Past this point, f is closed and any further explict access
+	 * to it is undefined. However, it still exists as an entry in
+	 * the open file list and possibly in the thread's locked files
+	 * list, if it was closed while explicitly locked. Functions
+	 * which process these lists must tolerate dead FILE objects
+	 * (which necessarily have inactive buffer pointers) without
+	 * producing any side effects. */
+
+	if (f->flags & F_PERM) return r;
+
+	__unlist_locked_file(f);
+
+	FILE **head = __ofl_lock();
+	if (f->prev) f->prev->next = f->next;
+	if (f->next) f->next->prev = f->prev;
+	if (*head == f) *head = f->next;
+	__ofl_unlock();
+
+	free(f->getln_buf);
+	free(f);
+
+	return r;
+}