53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/*
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* Copyright (C) 2008-2009 Kay Sievers <kay@vrfy.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "string-util.h"
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#include "udevadm-util.h"
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struct udev_device *find_device(struct udev *udev,
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const char *id,
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const char *prefix) {
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assert(udev);
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assert(id);
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if (prefix && !startswith(id, prefix))
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id = strjoina(prefix, id);
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if (startswith(id, "/dev/")) {
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struct stat statbuf;
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char type;
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if (stat(id, &statbuf) < 0)
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return NULL;
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if (S_ISBLK(statbuf.st_mode))
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type = 'b';
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else if (S_ISCHR(statbuf.st_mode))
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type = 'c';
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else
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return NULL;
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return udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
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} else if (startswith(id, "/sys/"))
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return udev_device_new_from_syspath(udev, id);
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else
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return NULL;
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}
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