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85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/* $NetBSD: ld_at_virtio.c,v 1.2 2015/05/16 15:03:12 pooka Exp $ */
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/*
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* Copyright (c) 2010 Antti Kantee. All Rights Reserved.
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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 ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* 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 OR
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* 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 <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ld_at_virtio.c,v 1.2 2015/05/16 15:03:12 pooka Exp $");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <sys/stat.h>
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#include <sys/disklabel.h>
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#include "rump_private.h"
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#include "rump_vfs_private.h"
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#include "ioconf.c"
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RUMP_COMPONENT(RUMP_COMPONENT_DEV)
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{
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config_init_component(cfdriver_ioconf_virtio_ld,
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cfattach_ioconf_virtio_ld, cfdata_ioconf_virtio_ld);
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}
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/*
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* Pseudo-devfs. Since creating device nodes is non-free, don't
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* speculatively create hundreds of them (= milliseconds slower
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* bootstrap). Instead, after the probe is done, see which units
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* were found and create nodes only for them.
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*/
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RUMP_COMPONENT(RUMP_COMPONENT_POSTINIT)
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{
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extern const struct bdevsw ld_bdevsw;
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extern const struct cdevsw ld_cdevsw;
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devmajor_t bmaj = -1, cmaj = -1;
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int error, i;
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if ((error = devsw_attach("ld", &ld_bdevsw, &bmaj,
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&ld_cdevsw, &cmaj)) != 0)
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panic("cannot attach ld: %d", error);
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for (i = 0; i < 10; i++) {
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char bbase[] = "/dev/ldX";
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char rbase[] = "/dev/rldX";
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if (device_lookup(&ld_cd, i) == NULL)
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break;
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bbase[sizeof(bbase)-2] = '0' + i;
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rbase[sizeof(rbase)-2] = '0' + i;
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if ((error = rump_vfs_makedevnodes(S_IFBLK, bbase, 'a',
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bmaj, DISKMINOR(i, 0), 5)) != 0)
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panic("cannot create cooked ld dev nodes: %d", error);
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if ((error = rump_vfs_makedevnodes(S_IFCHR, rbase, 'a',
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cmaj, DISKMINOR(i, 0), 5)) != 0)
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panic("cannot create raw ld dev nodes: %d", error);
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}
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}
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