freebsd man page for syscall_module

SYSCALL_MODULE(9)					   BSD Kernel Developer's Manual					 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 with name 'sys/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>.

BSD
								 January 24, 2015							       BSD