syscall_module(9)

NAME

SYSCALL_MODULE - syscall kernel module declaration macro

SYNOPSIS

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/module.h>
#include <sys/sysent.h>
SYSCALL_MODULE(name, int *offset, struct sysent *new_sysent,
        modeventhand_t evh, void *arg);

DESCRIPTION

The SYSCALL_MODULE() macro declares a new syscall.

SYSCALL_MODULE

expands into a kernel module declaration named as name.

The rest of the arguments expected by this macro are:

offset A pointer to an int which saves the offset

in struct

sysent where the syscall is allocated.

new_sysent is a pointer to a structure that specifies

the function

implementing the syscall and the number of

arguments this
function needs (see

evh A pointer to the kernel module event handler

function

with the argument arg. Please refer to mod

ule(9) for
more information.

arg The argument passed to the callback func

tions of the evh

event handler when it is called.

EXAMPLES

A minimal example for a syscall module can be found in
/usr/share/examples/kld/syscall/module/syscall.c.

SEE ALSO

module(9)

/usr/share/examples/kld/syscall/module/syscall.c

AUTHORS

This manual page was written by Alexander Langer

<alex@FreeBSD.org>.

BSD January 7, 2005

BSD