.\" $NetBSD: modload.8,v 1.23 2003/02/25 10:34:59 wiz Exp $ .\" .\" Copyright (c) 1993 Christopher G. Demetriou .\" 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. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed for the .\" NetBSD Project. See http://www.NetBSD.org/ for .\" information about NetBSD. .\" 4. The name of the author may not be used to endorse or promote products .\" derived from this software without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 April 30, 1999 .Dt MODLOAD 8 .Os .Sh NAME .Nm modload .Nd load a kernel module .Sh SYNOPSIS .Nm .Op Fl dnvsS .Op Fl A Ar kernel .Op Fl e Ar entry .Op Fl p Ar postinstall .Op Fl o Ar output_file .Op Fl T Ar linker_script .Ar input_file .Sh DESCRIPTION The .Nm utility loads a loadable kernel module into a running system. The input file is an object file (.o file). .Pp The options to .Nm are as follows: .Bl -tag -width indent .It Fl d Debug. Used to debug .Nm itself. .It Fl n Do everything, except calling the module entry point (and any post-install program). .It Fl v Print comments about the loading process. .It Fl s Load the symbol table. .It Fl S Do not remove the temporary object file. By default, the .Xr ld 1 output is removed after being loaded into the kernel. .It Fl A Ar kernel Specify the file that is passed to the linker to resolve module references to external symbols. The symbol file must be for the currently running kernel or the module is likely to crash the system. .It Fl e Ar entry Specify the module entry point. This is passed by .Nm to .Xr ld 1 when the module is linked. The default module entry point name is `xxxinit'. If `xxxinit' cannot be found, an attempt to use `\*[Lt]module_name\*[Gt]_lkmentry' will be made, where \*[Lt]module_name\*[Gt] is the filename being loaded without the `.o'. .It Fl p Ar postinstall Specify the name of a shell script or program that will be executed if the module is successfully loaded. It is always passed the module id (in decimal) and module type (in hexadecimal) as the first two arguments. For loadable drivers, the third argument is the character major device number and the fourth argument is the block major device number. For a loadable system call, the third argument is the system call number. .It Fl o Ar output_file Specify the name of the output file that is produced by the linker. .It Fl T Ar linker_script Specify the name of the linker script use to link against the kernel. .El .Sh FILES .Bl -tag -width /usr/include/sys/lkm.h -compact .It Pa /netbsd default file passed to the linker to resolve external references in the module .It Pa /usr/include/sys/lkm.h file containing definitions of module types .\" .It Pa output file. .\" default output file 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 ld 1 , .Xr lkm 4 , .Xr modstat 8 , .Xr modunload 8 .Sh HISTORY The .Nm command was designed to be similar in functionality to the corresponding command in .Tn "SunOS 4.1.3" . .Sh AUTHORS .An Terrence R. Lambert .Aq terry@cs.weber.edu . .Sh BUGS Loading the symbol table is expensive in terms of space: it presently duplicates all the kernel symbols for each lkm loaded with .Fl s .