chud_bsd_callback.c [plain text]
#include <stdint.h>
#include <mach/boolean.h>
#include <mach/mach_types.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#pragma mark **** kern debug ****
typedef void (*chudxnu_kdebug_callback_func_t)(uint32_t debugid, uint32_t arg0, uint32_t arg1, uint32_t arg2, uint32_t arg3, uint32_t arg4);
static chudxnu_kdebug_callback_func_t kdebug_callback_fn = NULL;
kern_return_t chudxnu_kdebug_callback_enter(chudxnu_kdebug_callback_func_t);
kern_return_t chudxnu_kdebug_callback_cancel(void);
extern void kdbg_control_chud(int val, void *fn);
extern unsigned int kdebug_enable;
static void
chudxnu_private_kdebug_callback(
unsigned int debugid,
unsigned int arg0,
unsigned int arg1,
unsigned int arg2,
unsigned int arg3,
unsigned int arg4)
{
chudxnu_kdebug_callback_func_t fn = kdebug_callback_fn;
if(fn) {
(fn)(debugid, arg0, arg1, arg2, arg3, arg4);
}
}
__private_extern__ kern_return_t
chudxnu_kdebug_callback_enter(chudxnu_kdebug_callback_func_t func)
{
kdebug_callback_fn = func;
kdbg_control_chud(TRUE, (void *)chudxnu_private_kdebug_callback);
kdebug_enable |= 0x10;
return KERN_SUCCESS;
}
__private_extern__ kern_return_t
chudxnu_kdebug_callback_cancel(void)
{
kdebug_callback_fn = NULL;
kdbg_control_chud(FALSE, NULL);
kdebug_enable &= ~(0x10);
return KERN_SUCCESS;
}
#pragma mark **** CHUD syscall ****
typedef kern_return_t (*chudxnu_syscall_callback_func_t)(uint32_t code, uint32_t arg0, uint32_t arg1, uint32_t arg2, uint32_t arg3, uint32_t arg4);
static chudxnu_syscall_callback_func_t syscall_callback_fn = NULL;
kern_return_t chudxnu_syscall_callback_enter(chudxnu_syscall_callback_func_t func);
kern_return_t chudxnu_syscall_callback_cancel(void);
int chud(p, uap, retval)
struct proc *p;
struct chud_args *uap;
register_t *retval;
{
#pragma unused (p)
chudxnu_syscall_callback_func_t fn = syscall_callback_fn;
if(!fn) {
return EINVAL;
}
*retval = fn(uap->code, uap->arg1, uap->arg2, uap->arg3, uap->arg4, uap->arg5);
return 0;
}
__private_extern__
kern_return_t chudxnu_syscall_callback_enter(chudxnu_syscall_callback_func_t func)
{
syscall_callback_fn = func;
return KERN_SUCCESS;
}
__private_extern__
kern_return_t chudxnu_syscall_callback_cancel(void)
{
syscall_callback_fn = NULL;
return KERN_SUCCESS;
}