Osmocom Remote SIM Software Suite https://osmocom.org/projects/osmo-remsim
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osmo-remsim/src/bankd/driver_core.c

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2.1 KiB

/*! \file reader_pcsc.c
* Card reader driver core */
/*
* (C) 2018 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <stdio.h>
#include <talloc.h>
#include <osmocom/core/linuxlist.h>
#include "internal.h"
#include "debug.h"
static LLIST_HEAD(g_card_reader_drivers);
static LLIST_HEAD(g_card_readers);
struct card_reader *card_reader_alloc(void *ctx, const char *name,
const struct card_reader_driver *drv, void *drv_handle)
{
struct card_reader *cr = talloc_zero(ctx, struct card_reader);
if (!cr)
return NULL;
cr->name = talloc_strdup(ctx, name);
cr->drv = drv;
cr->drv_handle = drv_handle;
INIT_LLIST_HEAD(&cr->slots);
llist_add(&cr->list, &g_card_readers);
LOGP(DMAIN, LOGL_INFO, "allocated reader '%s'\n", cr->name);
return cr;
}
/* allocate a new slot in the given reader */
struct card_reader_slot *card_reader_slot_alloc(struct card_reader *cr, unsigned int slot_num)
{
struct card_reader_slot *cs = talloc_zero(cr, struct card_reader_slot);
if (!cs)
return NULL;
cs->reader = cr;
llist_add(&cr->list, &cr->slots);
cs->num = slot_num;
return cs;
}
/* register a driver with the core, should typcially be called at start-up */
void card_reader_driver_register(struct card_reader_driver *drv)
{
llist_add_tail(&drv->list, &g_card_reader_drivers);
}
/* probe all readers on all drivers */
void card_readers_probe(void *ctx)
{
struct card_reader_driver *drv;
llist_for_each_entry(drv, &g_card_reader_drivers, list) {
LOGP(DMAIN, LOGL_INFO, "probing driver '%s' for drivers\n", drv->name);
drv->ops->probe(ctx);
}
}