From 1640445cb2f5027eebbce90faf5273cff85ed844 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 2 Dec 2021 22:41:40 +0100
Subject: [PATCH] LibCore: Add lstat() syscall wrapper

---
 Userland/Libraries/LibCore/System.cpp | 18 ++++++++++++++++++
 Userland/Libraries/LibCore/System.h   |  1 +
 2 files changed, 19 insertions(+)

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index a08d1bcff2..c22ec3de4d 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -175,6 +175,24 @@ ErrorOr<struct stat> stat(StringView path)
 #endif
 }
 
+ErrorOr<struct stat> lstat(StringView path)
+{
+    if (!path.characters_without_null_termination())
+        return Error::from_syscall("lstat"sv, -EFAULT);
+
+    struct stat st = {};
+#ifdef __serenity__
+    Syscall::SC_stat_params params { { path.characters_without_null_termination(), path.length() }, &st, AT_FDCWD, false };
+    int rc = syscall(SC_stat, &params);
+    HANDLE_SYSCALL_RETURN_VALUE("lstat"sv, rc, st);
+#else
+    String path_string = path;
+    if (::stat(path_string.characters(), &st) < 0)
+        return Error::from_syscall("lstat"sv, -errno);
+    return st;
+#endif
+}
+
 ErrorOr<ssize_t> read(int fd, Bytes buffer)
 {
     ssize_t rc = ::read(fd, buffer.data(), buffer.size());
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index 6f4fa49f7c..8bda871631 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -30,6 +30,7 @@ ErrorOr<int> open(StringView path, int options, ...);
 ErrorOr<void> close(int fd);
 ErrorOr<void> ftruncate(int fd, off_t length);
 ErrorOr<struct stat> stat(StringView path);
+ErrorOr<struct stat> lstat(StringView path);
 ErrorOr<ssize_t> read(int fd, Bytes buffer);
 ErrorOr<ssize_t> write(int fd, ReadonlyBytes buffer);
 ErrorOr<void> kill(pid_t, int signal);