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/*
* Copyright (C) 2008-2009 Kay Sievers <kay@vrfy.org>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "systemd-basic/string-util.h"
#include "udevadm-util.h"
struct udev_device *find_device(struct udev *udev,
const char *id,
const char *prefix) {
assert(udev);
assert(id);
if (prefix && !startswith(id, prefix))
id = strjoina(prefix, id);
if (startswith(id, "/dev/")) {
struct stat statbuf;
char type;
if (stat(id, &statbuf) < 0)
return NULL;
if (S_ISBLK(statbuf.st_mode))
type = 'b';
else if (S_ISCHR(statbuf.st_mode))
type = 'c';
else
return NULL;
return udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
} else if (startswith(id, "/sys/"))
return udev_device_new_from_syspath(udev, id);
else
return NULL;
}
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