From 05cf1327ed0bdda7e4898cddf187f0fafe3d2a4e Mon Sep 17 00:00:00 2001
From: implicitfield <114500360+implicitfield@users.noreply.github.com>
Date: Sat, 11 May 2024 08:57:42 +0400
Subject: [PATCH] Kernel: Make utimensat ignore the dirfd when given an
 absolute path

---
 Kernel/Syscalls/utimensat.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Kernel/Syscalls/utimensat.cpp b/Kernel/Syscalls/utimensat.cpp
index 0855b5ee380..6128be1277f 100644
--- a/Kernel/Syscalls/utimensat.cpp
+++ b/Kernel/Syscalls/utimensat.cpp
@@ -69,8 +69,15 @@ ErrorOr<FlatPtr> Process::sys$utimensat(Userspace<Syscall::SC_utimensat_params c
         times[1] = now;
     }
 
+    auto resolve_base = [&](StringView path) -> ErrorOr<NonnullRefPtr<Custody>> {
+        if (!path.is_empty() && path[0] == '/')
+            return VirtualFileSystem::the().root_custody();
+        else
+            return custody_for_dirfd(params.dirfd);
+    };
+
     auto path = TRY(get_syscall_path_argument(params.path));
-    auto base = TRY(custody_for_dirfd(params.dirfd));
+    auto base = TRY(resolve_base(path->view()));
     auto& atime = times[0];
     auto& mtime = times[1];
     TRY(VirtualFileSystem::the().utimensat(credentials(), path->view(), *base, atime, mtime, follow_symlink));