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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.
-.\"
-.Dd July 15, 2008
-.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[MAXMODNAME];
- int refs;
- int id;
- modspecific_t data;
-};
-typedef union modspecific {
- int intval;
- u_int uintval;
- long longval;
- u_long ulongval;
-} modspecific_t;
-.Ed
-.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 .