1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/files/opener_resource.h Mon Mar 29 00:04:07 2021 +0200
1.3 @@ -0,0 +1,56 @@
1.4 +#pragma once
1.5 +
1.6 +#include <l4/sys/ipc.h>
1.7 +
1.8 +#include "accessing.h"
1.9 +#include "file_pager.h"
1.10 +#include "opener_context_resource.h"
1.11 +#include "opener_interface.h"
1.12 +#include "pager.h"
1.13 +#include "paging.h"
1.14 +#include "pages.h"
1.15 +#include "resource.h"
1.16 +
1.17 +/* Support for providing access to files. */
1.18 +
1.19 +class OpenerResource : public Resource, public Opener
1.20 +{
1.21 +protected:
1.22 + Accessing *_accessing;
1.23 + Paging *_paging;
1.24 + Pages *_pages;
1.25 +
1.26 + /* Convenience methods. */
1.27 +
1.28 + Accessor *get_accessor(fileid_t fileid);
1.29 +
1.30 + PageMapper *get_mapper(Accessor *accessor);
1.31 +
1.32 + /* Configurable methods. */
1.33 +
1.34 + virtual fileid_t get_fileid(const char *path) = 0;
1.35 +
1.36 + virtual Accessor *make_accessor(fileid_t fileid) = 0;
1.37 +
1.38 +public:
1.39 + explicit OpenerResource(Accessing *accessing, Paging *paging, Pages *pages);
1.40 +
1.41 + /* Server details. */
1.42 +
1.43 + int expected_items();
1.44 +
1.45 + ipc_server_handler_type handler();
1.46 +
1.47 + void *interface()
1.48 + { return static_cast<Opener *>(this); }
1.49 +
1.50 + /* Direct access methods. */
1.51 +
1.52 + FilePager *open(const char *path, flags_t flags);
1.53 +
1.54 + /* Opener interface methods. */
1.55 +
1.56 + long context(l4_cap_idx_t *context);
1.57 +};
1.58 +
1.59 +// vim: tabstop=4 expandtab shiftwidth=4