From 90aa1abfed5c575f6a60e9f2ac0a0d912c82277d Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Mon, 29 Nov 2021 23:07:33 +0100
Subject: [PATCH] LibCore: Add ioctl() syscall wrapper

---
 Userland/Libraries/LibCore/System.cpp | 12 ++++++++++++
 Userland/Libraries/LibCore/System.h   |  1 +
 2 files changed, 13 insertions(+)

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index b0198294fe..17c6fd5cc0 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -10,6 +10,7 @@
 #include <LibSystem/syscall.h>
 #include <fcntl.h>
 #include <stdarg.h>
+#include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/socket.h>
 #include <unistd.h>
@@ -229,4 +230,15 @@ ErrorOr<String> gethostname()
     return String(&hostname[0]);
 }
 
+ErrorOr<void> ioctl(int fd, unsigned request, ...)
+{
+    va_list ap;
+    va_start(ap, request);
+    FlatPtr arg = va_arg(ap, FlatPtr);
+    va_end(ap);
+    if (::ioctl(fd, request, arg) < 0)
+        return Error::from_syscall("ioctl"sv, -errno);
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index 121867701c..2dc6665975 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -36,5 +36,6 @@ ErrorOr<int> dup(int source_fd);
 ErrorOr<int> dup2(int source_fd, int destination_fd);
 ErrorOr<String> ptsname(int fd);
 ErrorOr<String> gethostname();
+ErrorOr<void> ioctl(int fd, unsigned request, ...);
 
 }