SYSCALL_MODULE(9)

NAME

SYSCALL_MODULE – syscall kernel module declaration macro

#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);

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: 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.

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

This manual page was written by Alexander Langer ⟨[email protected]⟩.