1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/libfsserver/include/fsserver/host_file_accessor.h Thu Apr 15 23:15:17 2021 +0200
1.3 @@ -0,0 +1,53 @@
1.4 +/*
1.5 + * A file accessor employing a "host" file provided via the C library.
1.6 + *
1.7 + * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software; you can redistribute it and/or
1.10 + * modify it under the terms of the GNU General Public License as
1.11 + * published by the Free Software Foundation; either version 2 of
1.12 + * the License, or (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program; if not, write to the Free Software
1.21 + * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 + * Boston, MA 02110-1301, USA
1.23 + */
1.24 +
1.25 +#pragma once
1.26 +
1.27 +#include <stdio.h>
1.28 +
1.29 +#include <fsserver/accessor.h>
1.30 +
1.31 +
1.32 +
1.33 +/* A host filesystem file accessor, providing flexpages corresponding to file
1.34 + regions. */
1.35 +
1.36 +class HostFileAccessor : public Accessor
1.37 +{
1.38 +protected:
1.39 + const char *_path;
1.40 + FILE *_fp;
1.41 +
1.42 + /* Data transfer helper methods. */
1.43 +
1.44 + virtual void fill_populated(Flexpage *flexpage);
1.45 +
1.46 + virtual void flush_populated(Flexpage *flexpage);
1.47 +
1.48 +public:
1.49 + explicit HostFileAccessor(const char *path, fileid_t fileid);
1.50 +
1.51 + virtual void close();
1.52 +
1.53 + virtual void open();
1.54 +};
1.55 +
1.56 +// vim: tabstop=4 expandtab shiftwidth=4