Kernel/SysFS: Silently ignore attempts to update SysFS timestamps

We have to override Inode::update_timestamps() for SysFS inodes,
otherwise we'll get the default behavior of erroring with ENOTIMPL.

2 files changed, 6 insertions, 0 deletions

diff --git a/Kernel/FileSystem/SysFS.cpp b/Kernel/FileSystem/SysFS.cpp
index 33ae1bff94..8da22c5afd 100644
--- a/Kernel/FileSystem/SysFS.cpp
+++ b/Kernel/FileSystem/SysFS.cpp
@@ -126,6 +126,11 @@ ErrorOr<void> SysFSInode::truncate(u64 size)
     return m_associated_component->truncate(size);
 }
 
+ErrorOr<void> SysFSInode::update_timestamps(Optional<time_t>, Optional<time_t>, Optional<time_t>)
+{
+    return {};
+}
+
 ErrorOr<NonnullLockRefPtr<SysFSLinkInode>> SysFSLinkInode::try_create(SysFS const& sysfs, SysFSComponent const& component)
 {
     return adopt_nonnull_lock_ref_or_enomem(new (nothrow) SysFSLinkInode(sysfs, component));
diff --git a/Kernel/FileSystem/SysFS.h b/Kernel/FileSystem/SysFS.h
index 303585ecf6..8729b905a2 100644
--- a/Kernel/FileSystem/SysFS.h
+++ b/Kernel/FileSystem/SysFS.h
@@ -54,6 +54,7 @@ protected:
     virtual ErrorOr<void> chmod(mode_t) override;
     virtual ErrorOr<void> chown(UserID, GroupID) override;
     virtual ErrorOr<void> truncate(u64) override;
+    virtual ErrorOr<void> update_timestamps(Optional<time_t> atime, Optional<time_t> ctime, Optional<time_t> mtime) override;
 
     virtual ErrorOr<void> attach(OpenFileDescription& description) override final;
     virtual void did_seek(OpenFileDescription&, off_t) override final;