NetBSD/sbin/modstat/modstat.8

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.\" $NetBSD: modstat.8,v 1.28 2020/02/23 00:14:31 wiz Exp $
.\"
.\" Copyright (c) 1993 Christopher G. Demetriou
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.\" modification, are permitted provided that the following conditions
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.\" This product includes software developed for the
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.\" <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
.\"
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.Dd February 22, 2020
.Dt MODSTAT 8
.Os
.Sh NAME
.Nm modstat
.Nd display status of loaded kernel modules
.Sh SYNOPSIS
.Nm
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.Op Fl Aaek
.Op Fl n Ar name | name
.Sh DESCRIPTION
The
.Nm
utility displays the status of any kernel modules present in the kernel.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl A
Tells you whether or not modules can be autoloaded at the moment.
This option
.Em does
take into consideration the sysctl
.Li kern.module.autoload .
.It Fl a
Tells you whether or not modules can be autoloaded at the moment.
This option
.Em does not
take into consideration the sysctl
.Li kern.module.autoload .
.It Fl e
Tells you whether or not you may load a module at the moment.
.It Fl k
Display the kernel address of the module's text segment (disabled by default).
.It Fl n Ar name
Display the status of only the module with this name.
Please note that
.Fl n
is optional.
.El
.Pp
In addition to listing the currently loaded modules' name,
the information reported by
.Nm
includes:
.Bl -tag -width Loadaddr
.It Li CLASS
Module class, such as
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"vfs", "driver", "exec", "misc" or "secmodel".
.It Li SOURCE
Where the module was loaded from.
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.Qq Dv builtin
indicates that the module was built into the running kernel.
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.Qq Dv boot
indicates that the module was loaded during system bootstrap.
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.Qq Dv filesys
indicates that the module was loaded from the file system.
.It Li SIZE
Size of the module's text section, in bytes.
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.It Li FLAG
The module flags:
.Bl -tag -width a -offset indent -compact
.It Dv a
Module is auto-loaded.
.It Dv f
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Requires the
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.Xr modload 8
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flag
.Fl f
(force) to be loaded.
.El
.It Li REFS
Number of references held on the module.
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Disabled builtin modules will show a count of \-1 here.
.It Li ADDRESS
The kernel address at which the module's text segment is loaded.
Builtin modules will show 0 here.
This field is only displayed if the
.Fl k
option is specified.
.It Li REQUIRES
Additional modules that must be present.
.El
.Sh EXIT STATUS
The
.Nm
utility exits with a status of 0 on success
and with a nonzero status if an error occurs.
.Sh SEE ALSO
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.Xr module 7 ,
.Xr sysctl 7 ,
.Xr modload 8 ,
.Xr modunload 8
.Sh HISTORY
A
.Nm
utility appeared in
.Nx 0.9 .
The
.Nm
command was designed to be similar in functionality
to the corresponding command in
.Tn "SunOS 4.1.3" .
.Nm
was switched to the module framework for
.Nx 5.0 .
.Sh AUTHORS
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.An -nosplit
The original
.Nx
implementation was written by
.An Terrence R. Lambert Aq Mt terry@cs.weber.edu .
The switch to the module framework was by
.An Andrew Doran Aq Mt ad@NetBSD.org .