diff options
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/DEV_MODULE.9 | 103 | ||||
| -rw-r--r-- | share/man/man9/Makefile | 2 |
2 files changed, 104 insertions, 1 deletions
diff --git a/share/man/man9/DEV_MODULE.9 b/share/man/man9/DEV_MODULE.9 new file mode 100644 index 0000000..a173cd3 --- /dev/null +++ b/share/man/man9/DEV_MODULE.9 @@ -0,0 +1,103 @@ +.\" -*- nroff -*- +.\" +.\" Copyright (c) 2001 Alexander Langer +.\" +.\" All rights reserved. +.\" +.\" This program is free software. +.\" +.\" 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. +.\" 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 DEVELOPERS ``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 DEVELOPERS 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. +.\" +.\" $FreeBSD$ +.\" +.Dd March 11, 2001 +.Dt DEV_MODULE 9 +.Os +.Sh NAME +.Nm DEV_MODULE +.Nd device driver module declaration macro +.Sh SYNOPSIS +.Fd #include <sys/module.h> +.Fd #include <sys/conf.h> +.Fn DEV_MODULE "name" "modeventhand_t evh" "void *arg" +.Sh DESCRIPTION +The +.Fn DEV_MODULE +macro declares a device driver kernel module. +It fills in a +.Vt moduledata_t +structure and then calls +.Fn DECLARE_MODULE +with the correct args, where +.Fa name +is the name of the module and +.Fa evh +(with its argument +.Fa arg ) +is the event handler for the module (refer to +.Xr DECLARE_MODULE 9 +for more information). +The event handler is supposed to create the device with +.Fn make_dev +on load and to destroy it when it is unloaded using +.Fn destroy_dev . +.Sh EXAMPLES +.Bd -literal +#include <sys/module.h> +#include <sys/conf.h> + +static struct cdevsw foo_devsw = { ... }; + +static dev_t sdev; + +static int +foo_load(module_t mod, int cmd, void *arg) +{ + int err = 0; + + switch (cmd) { + case MOD_LOAD: + sdev = make_dev(&foo_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "foo"); + break; /* Success*/ + + case MOD_UNLOAD: + case MOD_SHUTDOWN: + destroy_dev(sdev); + break; /* Success*/ + + default: + err = EINVAL; + break; + } + + return(err); +} + +DEV_MODULE(foo, foo_load, NULL); +.Ed +.Sh SEE ALSO +.Xr module 9 , +.Xr DECLARE_MODULE 9 , +.Xr make_dev 9 , +.Xr destroy_dev 9 +.Sh AUTHORS +This manual page was written by +.An Alexander Langer Aq alex@FreeBSD.org . diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile index 72502d1..b2a8593 100644 --- a/share/man/man9/Makefile +++ b/share/man/man9/Makefile @@ -1,6 +1,6 @@ # $FreeBSD$ -MAN9= CONDSPLASSERT.9 DECLARE_MODULE.9 DELAY.9 KASSERT.9 MD5.9 \ +MAN9= CONDSPLASSERT.9 DECLARE_MODULE.9 DELAY.9 DEV_MODULE.9 KASSERT.9 MD5.9 \ MODULE_DEPEND.9 MODULE_VERSION.9 SPLASSERT.9 \ VFS.9 VFS_FHTOVP.9 VFS_INIT.9 VFS_MOUNT.9 VFS_QUOTACTL.9 \ VFS_ROOT.9 VFS_START.9 VFS_STATFS.9 VFS_SYNC.9 VFS_UNMOUNT.9 \ |
