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/*****************************************************************************
*
* evemu - Kernel device emulation
*
* Copyright (C) 2010-2012 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 as published
* by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
****************************************************************************/
#include "evemu.h"
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
/*
* Finds the newly created device node and holds it open.
*/
static void hold_device(struct evemu_device *dev)
{
char data[256];
int ret;
int fd;
const char *device_node = evemu_get_devnode(dev);
if (!device_node)
{
fprintf(stderr, "can not determine device node\n");
return;
}
fd = open(device_node, O_RDONLY);
if (fd < 0)
{
fprintf(stderr, "error %d opening %s: %s\n",
errno, device_node, strerror(errno));
return;
}
fprintf(stdout, "%s: %s\n", evemu_get_name(dev), device_node);
fflush(stdout);
while ((ret = read(fd, data, sizeof(data))) > 0);
close(fd);
}
static int evemu_device(FILE *fp)
{
struct evemu_device *dev;
int ret = -ENOMEM;
dev = evemu_new(NULL);
if (!dev)
goto out;
ret = evemu_read(dev, fp);
if (ret <= 0)
goto out;
if (strlen(evemu_get_name(dev)) == 0) {
char name[64];
sprintf(name, "evemu-%d", getpid());
evemu_set_name(dev, name);
}
ret = evemu_create_managed(dev);
if (ret < 0)
goto out;
hold_device(dev);
evemu_destroy(dev);
out:
evemu_delete(dev);
return ret;
}
int main(int argc, char *argv[])
{
FILE *fp;
int ret;
if (argc < 2) {
fprintf(stderr, "Usage: %s <dev.prop>\n", argv[0]);
return -1;
}
fp = fopen(argv[1], "r");
if (!fp) {
fprintf(stderr, "error: could not open file (%m)\n");
return -1;
}
ret = evemu_device(fp);
if (ret <= 0) {
fprintf(stderr, "error: could not create device: %d\n", ret);
return -1;
}
fclose(fp);
return 0;
}
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