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
<sys/sysent.h>
).
- evh
- A pointer to the kernel module event handler function with the argument
arg. Please refer to
module(9) for more information.
- arg
- The argument passed to the callback functions 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⟩.