lindev(4) [1] is supposed to be a collection of linux-specific pseudo
devices that we also support, just not by default (thus only LINT or module builds by default). While currently there is only "/dev/full" [2], we are planning to see more in the future. We may decide to change the module/dependency logic in the future should the list grow too long. This is not part of linux.ko as also non-linux binaries like kFreeBSD userland or ports can make use of this as well. Suggested by: rwatson [1] (name) Submitted by: ed [2] Discussed with: markm, ed, rwatson, kib (weeks ago) Reviewed by: rwatson, brueffer (prev. version) PR: kern/68961 MFC after: 6 weeks
This commit is contained in:
parent
ab711589df
commit
4507f02e0e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=197518
@ -173,6 +173,7 @@ MAN= aac.4 \
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le.4 \
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led.4 \
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lge.4 \
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${_lindev.4} \
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${_linux.4} \
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lmc.4 \
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lo.4 \
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@ -625,6 +626,7 @@ _if_urtw.4= if_urtw.4
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_if_wpi.4= if_wpi.4
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_ipmi.4= ipmi.4
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_io.4= io.4
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_lindev.4= lindev.4
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_linux.4= linux.4
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_ndis.4= ndis.4
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_nfe.4= nfe.4
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@ -636,6 +638,8 @@ _speaker.4= speaker.4
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_spkr.4= spkr.4
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_urtw.4= urtw.4
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_wpi.4= wpi.4
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MLINKS+=lindev.4 full.4
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.endif
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.if exists(${.CURDIR}/man4.${MACHINE_ARCH})
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73
share/man/man4/lindev.4
Normal file
73
share/man/man4/lindev.4
Normal file
@ -0,0 +1,73 @@
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.\"-
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.\" Copyright (c) 2009 "Bjoern A. Zeeb" <bz@FreeBSD.org>
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.\" 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 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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.\" $FreeBSD$
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.\"
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.Dd September 26, 2009
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.Dt LINDEV 4
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.Os
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.Sh NAME
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.Nm lindev
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.Nd the lindev module
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.Sh SYNOPSIS
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To compile this collection of linux-specific pseudo devices into the kernel,
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place the following line in your kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device lindev"
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.Ed
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.Pp
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Alternatively, to load the driver as a module at boot time,
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place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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lindev_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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module provides a collection of linux-specific pseudo devices.
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.Sh DEVICES
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.Bl -tag -width /dev/full
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.It Pa /dev/full
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The
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.Xr full
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device always returns
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.Er ENOSPC
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on write attempts.
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For reads it emulates
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.Xr zero 4 .
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.El
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.Sh FILES
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.Bl -tag -width /dev/full
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.It Pa /dev/full
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.El
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.Sh SEE ALSO
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.Xr null 4 ,
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.Xr zero 4
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.Sh HISTORY
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The
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.Nm
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module first appeared in
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.Fx 9.0 .
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@ -517,3 +517,6 @@ options VM_KMEM_SIZE_SCALE
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# Enable NDIS binary driver support
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options NDISAPI
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device ndis
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# Linux-specific pseudo devices support
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device lindev
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@ -179,6 +179,7 @@ screensave_name="green_saver" # Set to the name of the screensaver module
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ibcs2_load="NO" # IBCS2 (SCO) emulation
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ibcs2_coff_load="NO"
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linux_load="NO" # Linux emulation
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lindev_load="NO" # Linux-specific pseudo devices (see lindev(4))
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svr4_load="NO" # SystemV R4 emulation
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streams_load="NO" # System V streams module
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@ -208,6 +208,8 @@ dev/hwpmc/hwpmc_piv.c optional hwpmc
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dev/hwpmc/hwpmc_tsc.c optional hwpmc
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dev/hwpmc/hwpmc_x86.c optional hwpmc
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dev/kbd/kbd.c optional atkbd | sc | ukbd | usb2_input_kbd
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dev/lindev/full.c optional lindev
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dev/lindev/lindev.c optional lindev
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dev/mem/memutil.c optional mem
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dev/nfe/if_nfe.c optional nfe pci
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dev/nve/if_nve.c optional nve pci
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@ -201,6 +201,8 @@ dev/ipmi/ipmi_pci.c optional ipmi pci
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dev/ipmi/ipmi_linux.c optional ipmi compat_linux
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dev/kbd/kbd.c optional atkbd | sc | ukbd | usb2_input_kbd
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dev/le/if_le_isa.c optional le isa
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dev/lindev/full.c optional lindev
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dev/lindev/lindev.c optional lindev
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dev/mem/memutil.c optional mem
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dev/mse/mse.c optional mse
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dev/mse/mse_isa.c optional mse isa
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@ -107,6 +107,8 @@ dev/hwpmc/hwpmc_x86.c optional hwpmc
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dev/io/iodev.c optional io
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dev/kbd/kbd.c optional pckbd | sc | ukbd | usb2_input_kbd
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dev/le/if_le_cbus.c optional le isa
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dev/lindev/full.c optional lindev
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dev/lindev/lindev.c optional lindev
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dev/mem/memutil.c optional mem
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dev/mse/mse.c optional mse
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dev/mse/mse_cbus.c optional mse isa
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103
sys/dev/lindev/full.c
Normal file
103
sys/dev/lindev/full.c
Normal file
@ -0,0 +1,103 @@
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/*-
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* Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
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* 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 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 <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/uio.h>
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#include <dev/lindev/lindev.h>
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static struct cdev *full_dev;
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static d_read_t full_read;
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static d_write_t full_write;
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static struct cdevsw full_cdevsw = {
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.d_version = D_VERSION,
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.d_read = full_read,
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.d_write = full_write,
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.d_name = "full",
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};
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static void *zbuf;
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/* ARGSUSED */
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static int
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full_read(struct cdev *dev __unused, struct uio *uio, int flags __unused)
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{
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int error = 0;
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while (uio->uio_resid > 0 && error == 0)
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error = uiomove(zbuf, MIN(uio->uio_resid, PAGE_SIZE), uio);
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return (error);
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}
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/* ARGSUSED */
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static int
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full_write(struct cdev *dev __unused, struct uio *uio __unused,
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int flags __unused)
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{
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return (ENOSPC);
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}
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/* ARGSUSED */
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int
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lindev_modevent_full(module_t mod __unused, int type, void *data __unused)
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{
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switch(type) {
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case MOD_LOAD:
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zbuf = (void *)malloc(PAGE_SIZE, M_TEMP, M_WAITOK | M_ZERO);
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full_dev = make_dev(&full_cdevsw, 0, UID_ROOT, GID_WHEEL,
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0666, "full");
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if (bootverbose)
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printf("full: <full device>\n");
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break;
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case MOD_UNLOAD:
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destroy_dev(full_dev);
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free(zbuf, M_TEMP);
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break;
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case MOD_SHUTDOWN:
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break;
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default:
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return (EOPNOTSUPP);
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}
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return (0);
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}
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73
sys/dev/lindev/lindev.c
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73
sys/dev/lindev/lindev.c
Normal file
@ -0,0 +1,73 @@
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/*-
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* Copyright (c) 2009 "Bjoern A. Zeeb" <bz@FreeBSD.org>
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* 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 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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/*
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* "lindev" is supposed to be a collection of linux-specific devices
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* that we also support, just not by default.
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* While currently there is only "/dev/full", we are planning to see
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* more in the future.
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* This file is only the container to load/unload all supported devices;
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* the implementation of each should go into its own file.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <dev/lindev/lindev.h>
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/* ARGSUSED */
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static int
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lindev_modevent(module_t mod, int type, void *data)
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{
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int error;
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switch(type) {
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case MOD_LOAD:
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error = lindev_modevent_full(mod, type, data);
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break;
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case MOD_UNLOAD:
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error = lindev_modevent_full(mod, type, data);
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break;
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case MOD_SHUTDOWN:
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error = lindev_modevent_full(mod, type, data);
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break;
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default:
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return (EOPNOTSUPP);
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}
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return (error);
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}
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DEV_MODULE(lindev, lindev_modevent, NULL);
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MODULE_VERSION(lindev, 1);
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34
sys/dev/lindev/lindev.h
Normal file
34
sys/dev/lindev/lindev.h
Normal file
@ -0,0 +1,34 @@
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/*-
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* Copyright (c) 2009 "Bjoern A. Zeeb" <bz@FreeBSD.org>
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* 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
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 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 AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
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||||
*
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* $FreeBSD$
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*/
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#ifndef _DEV_LINDEV_LINDEV_H
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#define _DEV_LINDEV_LINDEV_H
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int lindev_modevent_full(module_t, int, void *);
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#endif /* _DEV_LINDEV_LINDEV_H */
|
@ -880,6 +880,9 @@ device streams # STREAMS network driver (required for svr4).
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options NDISAPI
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device ndis
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# Linux-specific pseudo devices support
|
||||
device lindev
|
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|
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#####################################################################
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# VM OPTIONS
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|
@ -151,6 +151,7 @@ SUBDIR= ${_3dfx} \
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libiconv \
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libmbpool \
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libmchain \
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${_lindev} \
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${_linprocfs} \
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${_linsysfs} \
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${_linux} \
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@ -373,6 +374,7 @@ _ie= ie
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_if_ndis= if_ndis
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_igb= igb
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_io= io
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_lindev= lindev
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_linprocfs= linprocfs
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_linsysfs= linsysfs
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_linux= linux
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@ -510,6 +512,7 @@ _ipwfw= ipwfw
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_iwn= iwn
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_iwnfw= iwnfw
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_ixgb= ixgb
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_lindev= lindev
|
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_linprocfs= linprocfs
|
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_linsysfs= linsysfs
|
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_linux= linux
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|
8
sys/modules/lindev/Makefile
Normal file
8
sys/modules/lindev/Makefile
Normal file
@ -0,0 +1,8 @@
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# $FreeBSD$
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|
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.PATH: ${.CURDIR}/../../dev/lindev
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KMOD= lindev
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SRCS= full.c lindev.c
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.include <bsd.kmod.mk>
|
@ -565,6 +565,9 @@ options COMPAT_SVR4 # build emulator statically
|
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options DEBUG_SVR4 # enable verbose debugging
|
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device streams # STREAMS network driver (required for svr4).
|
||||
|
||||
# Linux-specific pseudo devices support
|
||||
device lindev
|
||||
|
||||
|
||||
#####################################################################
|
||||
# VM OPTIONS
|
||||
|
Loading…
Reference in New Issue
Block a user