From 4a213869f2f798399cd3ea6a9985b0fc988cbff3 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 23 Nov 2021 12:16:07 +0100
Subject: [PATCH] LibCore: Add syscall wrapper for ftruncate()

---
 Userland/Libraries/LibCore/System.cpp | 7 +++++++
 Userland/Libraries/LibCore/System.h   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index ccaa2ed5cb2..05a7341f24e 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -123,4 +123,11 @@ ErrorOr<void> close(int fd)
     return {};
 }
 
+ErrorOr<void> ftruncate(int fd, off_t length)
+{
+    if (::ftruncate(fd, length) < 0)
+        return Error::from_syscall("ftruncate"sv, -errno);
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index de2259683f4..aa2a01d5f5a 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -24,5 +24,6 @@ ErrorOr<void*> mmap(void* address, size_t, int protection, int flags, int fd, of
 ErrorOr<void> munmap(void* address, size_t);
 ErrorOr<int> open(StringView path, int options, ...);
 ErrorOr<void> close(int fd);
+ErrorOr<void> ftruncate(int fd, off_t length);
 
 }