I'm developing a device driver kld module to be hooked up to the FreeBSD system. Using a very simple default "hello" driver found below, I'm trying to
Browsing online I have found hints that it might be related to the file header param.h not being the same version as the kern.osreldate, and sure enough the __FreeBSD_version in the param.h was 1100101 while the kern.osreldate was 1100500. I tried changing this value in param.h but to no avail.
Further info:
(The directory /source/11 contains the source files from which I often compile and install a modified kernel).
As for
What should I do at this point? Where to go from here?
kld load the module. However I'm getting the error:
Code:
KLD hello.ko: depends on kernel - not available or version mismatch
linker_load_file: Unsupported file type
Code:
#include <sys/paramh.>
#include <sys/module.h>
#include <sys/kernel.h>
#include <sys/systm.h>
static int hello_modevent(module_t mod __unused, int event, void *arg __unused)
{
int error = 0;
switch(event) {
case MOD_LOAD:
uprintf("Hello,World!\n");
break;
case MOD_UNLOAD:
uprintf("Good-bye, cruel World!\n");
break;
default:
error = EOPNOTSUPP;
break;
}
return(error);
}
static moduledata_t hello_mod = {
"hello",
hello_modevent,
NULL
};
DECLARE_MODULE(hello,hello_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);Browsing online I have found hints that it might be related to the file header param.h not being the same version as the kern.osreldate, and sure enough the __FreeBSD_version in the param.h was 1100101 while the kern.osreldate was 1100500. I tried changing this value in param.h but to no avail.
Further info:
uname -a:
Code:
11.0-PRERELEASE FreeBSD 11.0-PRERELEASE #14 R304256M root@FreeBSD_Test:/usr/obj/usr/home/driver1/source/11/sys/GENERIC amd64As for
dmesg, the error displayed is the exact same two lines specified above, with no further details.What should I do at this point? Where to go from here?
