#include <libsyscall_intercept_hook_point.h>
#include <syscall.h>
#include <errno.h>
#define __USE_GNU
#include <dlfcn.h>

static int
hook(long syscall_number,
	 long arg0, long arg1,
	 long arg2, long arg3,
	 long arg4, long arg5,
	 long *result)
{
	if (syscall_number == SYS_getdents) {
		/*
		 * Prevent the application from
		 * using the getdents syscall. From
		 * the point of view of the calling
		 * process, it is as if the kernel
		 * would return the ENOTSUP error
		 * code from the syscall.
		 */
		*result = -ENOTSUP;
		return 0;
	} else {
		/*
		 * Ignore any other syscalls
		 * i.e.: pass them on to the kernel
		 * as would normally happen.
		 */
		return 1;
	}
}

static __attribute__((constructor)) void
init(void)
{
	// Set up the callback function
	intercept_hook_point = hook;
}