67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/* ****************************************************************************
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* mcs/open.c -- open a virtual main memory.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libcasio.
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* libcasio is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libcasio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#include "mcs.h"
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/**
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* casio_open_mcs:
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* Open a main memory interface.
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*
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* @arg m the main memory to create.
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* @arg cookie the main memory cookie.
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* @arg funcs the functions.
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* @return the error code (0 if ok).
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*/
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int CASIO_EXPORT casio_open_mcs(casio_mcs_t **m, void *cookie,
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const casio_mcsfuncs_t *funcs)
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{
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int err; casio_mcs_t *mcs = NULL;
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/* Allocate the filesystem. */
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*m = casio_alloc(1, sizeof(casio_mcs_t)); mcs = *m;
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if (!mcs) { err = casio_error_alloc; goto fail; }
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/* Set it up and return it. */
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mcs->casio_mcs_cookie = cookie;
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memcpy(&mcs->casio_mcs_funcs, funcs, sizeof(*funcs));
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return (0);
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fail:
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(*funcs->casio_mcsfuncs_close)(cookie);
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return (err);
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}
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/**
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* casio_close_mcs:
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* Close a main memory interface.
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*
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* @arg mcs the main memory to close.
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* @return the error (0 if ok).
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*/
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int CASIO_EXPORT casio_close_mcs(casio_mcs_t *mcs)
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{
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int err; casio_mcs_close_t *func;
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if (!mcs || !(func = mcs->casio_mcs_funcs.casio_mcsfuncs_close))
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return (0);
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err = (*func)(mcs->casio_mcs_cookie);
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casio_free(mcs);
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return (err);
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}
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