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.\"
.\" Copyright (c) 1999 Chris Costello
.\" 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.
.\" 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.
.\"
.\" $FreeBSD$
.\"
.Dd September 28, 2000
.Dt MODSTAT 2
.Os
.Sh NAME
.Nm modstat
.Nd get status of kernel module
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/param.h
.In sys/module.h
.Ft int
.Fn modstat "int modid" "struct module_stat *stat"
.Sh DESCRIPTION
The
.Fn modstat
system call writes the info for the kernel module referred to by
.Fa modid
into
.Fa stat .
.Bd -literal
struct module_stat {
int version; /* set to sizeof(module_stat) */
char name[MAXPATHLEN];
int refs;
int id;
modspecific_t data;
};
typedef union modspecific {
int intval;
u_int u_intval;
long longval;
u_long u_longval;
} modspecific_t;
.Ed
.Pp
.Bl -tag -width XXXaddress
.It version
This field is set to the size of the structure mentioned above by the code
calling
.Fn modstat ,
and not
.Fn modstat
itself.
.It name
The name of the module referred to by
.Fa modid .
.It refs
The number of modules referenced by
.Fa modid .
.It id
The id of the module specified in
.Fa modid .
.It data
Module specific data.
.El
.Sh RETURN VALUES
.Rv -std modstat
.Sh ERRORS
The information for the module referred to by
.Fa modid
is filled into the structure pointed to by
.Fa stat
unless:
.Bl -tag -width Er
.It Bq Er ENOENT
The module was not found (probably not loaded).
.It Bq Er EINVAL
The version specified in the
.Fa version
field of stat is not the proper version. You would need to rebuild world, the
kernel, or your application, if this error occurs, given that you did properly
fill in the
.Fa version
field.
.It Bq Er EFAULT
There was a problem copying one, some, or all of the fields into
.Fa stat
in the
.Xr copyout 9
function.
.El
.Sh SEE ALSO
.Xr kldfind 2 ,
.Xr kldfirstmod 2 ,
.Xr kldload 2 ,
.Xr kldnext 2 ,
.Xr kldstat 2 ,
.Xr kldsym 2 ,
.Xr kldunload 2 ,
.Xr modfind 2 ,
.Xr modfnext 2 ,
.Xr modnext 2 ,
.Xr kld 4 ,
.Xr kldstat 8
.Sh HISTORY
The
.Nm kld
interface first appeared in
.Fx 3.0 .
|
