modload - load a kernel module
modload [-dnvsS] [-A kernel] [-e entry] [-p postinstall] [-o
The modload utility loads a loadable kernel module into a
The input file is an object file (.o file).
The options to modload are as follows:
-d Debug. Used to debug modload itself.
-n Do everything, except calling the module entry point
-v Print comments about the loading process.
-s Do not load symbols from the kernel module.
-S Do not remove the temporary object file. By default, the ld(1)
output is removed after being loaded into the 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
Specify the module entry point. This is passed by
ld(1) when the module is linked. The default module
name is `xxxinit'. If `xxxinit' cannot be found, an
use `<module_name>_lkmentry' will be made, where
the filename being loaded without the `.o'.
Specify the name of a shell script or program that
will be executed
if the module is successfully loaded. It is
the module id (in decimal) and module type (in hexadecimal) as
the first two arguments. For loadable drivers, the
is the block or character major device number.
For a loadable
system call, the third argument is the system
Specify the name of the output file that is produced
by the linker.
/bsd default file passed to the linker to
references in the module
/usr/include/sys/lkm.h file containing definitions of module types
The modload utility exits with a status of 0 on success and
with a nonzero
status if an error occurs.
ld(1), lkm(4), modstat(8), modunload(8)
The modload command was designed to be similar in functionality to the
corresponding command in SunOS 4.1.3.
Terrence R. Lambert <email@example.com>
+o The loadable device driver framework can only reserve
either a character
or block device entry, not both.
+o Loading the symbol table is expensive in terms of space:
duplicates all the kernel symbols for each lkm loaded
OpenBSD 3.6 April 30, 1999
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