mirror of
https://git.rtems.org/rtems-libbsd/
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160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
/*
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* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <machine/rtems-bsd-kernel-space.h>
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <rtems/seterr.h>
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#include <assert.h>
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#include "test_cdev01.h"
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static d_open_t testopen;
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static d_close_t testclose;
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static d_read_t testread;
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static d_write_t testwrite;
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static d_ioctl_t testioctl;
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static d_poll_t testpoll;
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static d_kqfilter_t testkqfilter;
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static struct cdevsw test_cdevsw = {
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.d_version = D_VERSION,
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.d_flags = 0,
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/* FIXME: check for D_PSEUDO | D_NEEDMINOR | D_NEEDGIANT | D_TRACKCLOSE */
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.d_name = "test",
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.d_open = testopen,
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.d_close = testclose,
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.d_read = testread,
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.d_write = testwrite,
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.d_ioctl = testioctl,
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.d_poll = testpoll,
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.d_kqfilter = testkqfilter,
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};
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static int
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testopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
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{
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test_state *state = dev->si_drv1;
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assert(*state == TEST_NEW);
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*state = TEST_OPEN;
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return 0;
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}
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static int
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testclose(struct cdev *dev, int fflag, int devtype, struct thread *td)
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{
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test_state *state = dev->si_drv1;
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assert(*state == TEST_KQFILTER);
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*state = TEST_CLOSED;
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return 0;
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}
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static int
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testread(struct cdev *dev, struct uio *uio, int ioflag)
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{
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test_state *state = dev->si_drv1;
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assert(*state == TEST_OPEN || *state == TEST_IOCTL);
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if(*state == TEST_OPEN) {
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*state = TEST_READ;
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} else {
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*state = TEST_READV;
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}
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return 0;
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}
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static int
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testwrite(struct cdev *dev, struct uio *uio, int ioflag)
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{
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test_state *state = dev->si_drv1;
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assert(*state == TEST_READ || *state == TEST_READV);
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if(*state == TEST_READ) {
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*state = TEST_WRITE;
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} else {
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*state = TEST_WRITEV;
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}
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return 0;
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}
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static int
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testioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
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struct thread *td)
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{
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test_state *state = dev->si_drv1;
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assert(cmd == TEST_IOCTL_CMD);
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assert(*state == TEST_WRITE);
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*state = TEST_IOCTL;
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return 0;
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}
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static int
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testpoll(struct cdev *dev, int events, struct thread *td)
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{
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test_state *state = dev->si_drv1;
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assert(*state == TEST_WRITEV);
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*state = TEST_POLL;
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return 1;
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}
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static int
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testkqfilter(struct cdev *dev, struct knote *kn)
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{
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test_state *state = dev->si_drv1;
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assert(*state == TEST_POLL);
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*state = TEST_KQFILTER;
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return TEST_KQ_ERRNO;
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}
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void
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test_make_dev(test_state *state, const char *name)
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{
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struct cdev *dev = NULL;
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dev = make_dev(&test_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, name);
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assert(dev != NULL);
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dev->si_drv1 = state;
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}
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