Method RemoveXattrAt

pkg/sentry/fsimpl/kernfs/filesystem.go:1171–1194

RemoveXattrAt implements vfs.FilesystemImpl.RemoveXattrAt.

(ctx context.Context, rp *vfs.ResolvingPath, name string)

// RemoveXattrAt implements vfs.FilesystemImpl.RemoveXattrAt.
func (fs *Filesystem) RemoveXattrAt(ctx context.Context, rp *vfs.ResolvingPath, name string) error {
	fs.mu.RLock()
	defer fs.processDeferredDecRefs(ctx)
	defer fs.mu.RUnlock()
	d, err := fs.walkExistingLocked(ctx, rp)
	if err != nil {
		return err
	}
	if xi, ok := d.inode.(InodeWithXattrs); ok {
		creds := rp.Credentials()
		mode := d.inode.Mode()
		kuid := d.inode.UID()
		kgid := d.inode.GID()
		if err := vfs.GenericCheckPermissions(creds, vfs.MayWrite, mode, kuid, kgid); err != nil {
			return err
		}
		if err := vfs.CheckXattrPermissions(creds, vfs.MayWrite, mode, kuid, name); err != nil {
			return err
		}
		return xi.RemoveXattr(ctx, name)
	}
	// kernfs currently does not support extended attributes.
	return linuxerr.ENOTSUP
}

// PrependPath implements vfs.FilesystemImpl.PrependPath.
func (fs *Filesystem) PrependPath(ctx context.Context, vfsroot, vd vfs.VirtualDentry, b *fspath.Builder) error {