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-rw-r--r--sys/dev/nulldev/nulldev.c137
1 files changed, 0 insertions, 137 deletions
diff --git a/sys/dev/nulldev/nulldev.c b/sys/dev/nulldev/nulldev.c
deleted file mode 100644
index d828879..0000000
--- a/sys/dev/nulldev/nulldev.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*-
- * Copyright (c) 2000 Mark R. V. Murray & Jeroen C. van Gelderen
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer
- * in this position and unchanged.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/uio.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <sys/rman.h>
-
-/* For use with destroy_dev(9). */
-static dev_t null_dev;
-static dev_t zero_dev;
-
-static d_write_t null_write;
-static d_read_t zero_read;
-
-#define CDEV_MAJOR 2
-#define NULL_MINOR 2
-#define ZERO_MINOR 12
-
-static struct cdevsw null_cdevsw = {
- /* open */ (d_open_t *)nullop,
- /* close */ (d_close_t *)nullop,
- /* read */ (d_read_t *)nullop,
- /* write */ null_write,
- /* ioctl */ noioctl,
- /* poll */ nopoll,
- /* mmap */ nommap,
- /* strategy */ nostrategy,
- /* name */ "null",
- /* maj */ CDEV_MAJOR,
- /* dump */ nodump,
- /* psize */ nopsize,
- /* flags */ 0,
- /* bmaj */ -1
-};
-
-static struct cdevsw zero_cdevsw = {
- /* open */ (d_open_t *)nullop,
- /* close */ (d_close_t *)nullop,
- /* read */ zero_read,
- /* write */ null_write,
- /* ioctl */ noioctl,
- /* poll */ nopoll,
- /* mmap */ nommap,
- /* strategy */ nostrategy,
- /* name */ "zero",
- /* maj */ CDEV_MAJOR,
- /* dump */ nodump,
- /* psize */ nopsize,
- /* flags */ D_MMAP_ANON,
- /* bmaj */ -1
-};
-
-static void *zbuf;
-
-static int
-null_write(dev_t dev, struct uio *uio, int flag)
-{
- uio->uio_resid = 0;
- return 0;
-}
-
-static int
-zero_read(dev_t dev, struct uio *uio, int flag)
-{
- u_int c;
- int error = 0;
-
- while (uio->uio_resid > 0 && error == 0) {
- c = min(uio->uio_resid, PAGE_SIZE);
- error = uiomove(zbuf, c, uio);
- }
- return error;
-}
-
-static int
-null_modevent(module_t mod, int type, void *data)
-{
- switch(type) {
- case MOD_LOAD:
- if (bootverbose)
- printf("nulldev: <null device, zero device>\n");
- zbuf = (void *)malloc(PAGE_SIZE, M_TEMP, M_WAITOK);
- bzero(zbuf, PAGE_SIZE);
- zero_dev = make_dev(&zero_cdevsw, ZERO_MINOR, UID_ROOT,
- GID_WHEEL, 0666, "zero");
- null_dev = make_dev(&null_cdevsw, NULL_MINOR, UID_ROOT,
- GID_WHEEL, 0666, "null");
- return 0;
-
- case MOD_UNLOAD:
- destroy_dev(null_dev);
- destroy_dev(zero_dev);
- free(zbuf, M_TEMP);
- return 0;
-
- case MOD_SHUTDOWN:
- return 0;
-
- default:
- return EOPNOTSUPP;
- }
-}
-
-DEV_MODULE(nulldev, null_modevent, NULL);
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