72a64c5437
updated for the symtab support for a.out (non for ELF yet) and other cleanup by myself. should work on the alpha as well as other ELF ports... remove the ld(1) output by default, rather than leaving little binary turds across the filesystem...
134 lines
4.2 KiB
Groff
134 lines
4.2 KiB
Groff
.\" $NetBSD: modload.8,v 1.12 1999/06/13 12:54:40 mrg Exp $
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.\"
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.\" Copyright (c) 1993 Christopher G. Demetriou
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd April 30, 1999
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.Dt MODLOAD 8
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.Os NetBSD 0.8a
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.Sh NAME
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.Nm modload
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.Nd load a kernel module
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.Sh SYNOPSIS
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.Nm ""
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.Op Fl dnvsS
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.Op Fl A Ar kernel
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.Op Fl e Ar entry
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.Op Fl p Ar postinstall
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.Op Fl o Ar output_file
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.Ar input_file
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.Sh DESCRIPTION
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The
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.Nm
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utility loads a loadable kernel module into a running system.
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The input file is an object file (.o file).
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.Pp
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The options to
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.Nm
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are as follows:
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.Bl -tag -width indent
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.It Fl d
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Debug. Used to debug
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.Nm
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itself.
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.It Fl n
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Do everything, except calling the module entry point (and any
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post-install program).
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.It Fl v
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Print comments about the loading process.
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.It Fl s
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Load the symbol table.
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.It Fl S
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Do not remove the temporary object file. By default, the
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.Xr ld 1
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output is removed after being loaded into the kernel.
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.It Fl A Ar kernel
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Specify the file that is passed to the linker
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to resolve module references to external symbols.
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The symbol file must be for the currently running
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kernel or the module is likely to crash the system.
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.It Fl e Ar entry
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Specify the module entry point.
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This is passed by
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.Nm
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to
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.Xr ld 1
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when the module is linked.
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The default module entry point name is `xxxinit'. If `xxxinit' cannot be
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found, an attempt to use `<module_name>_lkmentry' will be made, where
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<module_name> is the filename being loaded without the `.o'.
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.It Fl p Ar postinstall
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Specify the name of a shell script or program that will
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be executed if the module is successfully loaded. It
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is always passed the module id (in decimal) and module
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type (in hexadecimal) as the first two arguments.
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For loadable drivers, the third argument is
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the block or character major device number.
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For a loadable system call, the third argument is the system
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call number.
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.It Fl o Ar output_file
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Specify the name of the output file that is produced by
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the linker.
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.El
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.Sh FILES
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.Bl -tag -width /usr/include/sys/lkm.h -compact
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.It Pa /netbsd
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default file passed to the linker to resolve external
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references in the module
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.It Pa /usr/include/sys/lkm.h
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file containing definitions of module types
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.\" .It Pa output file.
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.\" default output file name
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.El
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.Sh DIAGNOSTICS
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The
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.Nm
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utility exits with a status of 0 on success
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and with a nonzero status if an error occurs.
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.Sh SEE ALSO
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.Xr ld 1 ,
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.Xr lkm 4 ,
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.Xr modstat 8 ,
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.Xr modunload 8
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.Sh HISTORY
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The
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.Nm
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command was designed to be similar in functionality
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to the corresponding command in
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.Tn "SunOS 4.1.3" .
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.Sh AUTHOR
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Terrence R. Lambert, terry@cs.weber.edu
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.Sh BUGS
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.Bl -bullet
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.It
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The loadable device driver framework can
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only reserve either a character or block device entry, not both.
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.It
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Loading the symbol table is expensive in terms of space:
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it presently duplicates all the kernel symbols for each lkm loaded
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with
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.Fl s .
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.El
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