freebsd-dev/sbin/kldunload/kldunload.8
Poul-Henning Kamp 65a311fcb2 Give kldunload a -f(orce) argument.
Add a MOD_QUIESCE event for modules.  This should return error (EBUSY)
of the module is in use.

MOD_UNLOAD should now only fail if it is impossible (as opposed to
inconvenient) to unload the module.  Valid reasons are memory references
into the module which cannot be tracked down and eliminated.

When kldunloading, we abandon if MOD_UNLOAD fails, and if -force is
not given, MOD_QUIESCE failing will also prevent the unload.

For backwards compatibility, we treat EOPNOTSUPP from MOD_QUIESCE as
success.

Document that modules should return EOPNOTSUPP for unknown events.
2004-07-13 19:36:59 +00:00

85 lines
2.4 KiB
Groff

.\"
.\" Copyright (c) 1997 Doug Rabson
.\" All rights reserved.
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.\" $FreeBSD$
.\"
.Dd April 25, 1997
.Dt KLDUNLOAD 8
.Os
.Sh NAME
.Nm kldunload
.Nd unload a file from the kernel
.Sh SYNOPSIS
.Nm
.Op Fl f
.Op Fl v
.Fl i Ar id
.Nm
.Op Fl f
.Op Fl v
.Op Fl n
.Ar name
.Sh DESCRIPTION
The
.Nm
utility unloads a file which was previously loaded with
.Xr kldload 8 .
.Pp
The following options are available:
.Bl -tag -width indentXX
.It Fl f
Force the unload.
This ignores error returns to MOD_QUISCE from the module and implies
that the module should be unloaded even if it is currently in use.
The users are left to cope as best they can.
.It Fl v
Be more verbose.
.It Fl i Ar id
Unload the file with this ID.
.It Fl n Ar name
Unload the file with this name.
.It Ar name
Unload the file with this name.
.El
.Sh DIAGNOSTICS
The
.Nm
utility exits with a status of 0 on success
and with a nonzero status if an error occurs.
.Sh SEE ALSO
.Xr kldunload 2 ,
.Xr kldload 8 ,
.Xr kldstat 8
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 3.0 ,
replacing the
.Xr lkm 4
interface.
.Sh AUTHORS
.An Doug Rabson Aq dfr@FreeBSD.org