88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
/*
|
|
kldcommander fun module, replace kernel entry and size
|
|
tested on FreeBSD 9.3
|
|
by dash
|
|
|
|
*/
|
|
#include <sys/types.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/limits.h>
|
|
#include <sys/param.h>
|
|
#include <sys/module.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/pcpu.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/file.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/linker.h>
|
|
#include <sys/cdefs.h>
|
|
#include <sys/libkern.h>
|
|
|
|
static int kldstat_hook(struct thread *td, struct kldstat_args *uap)
|
|
{
|
|
struct kld_file_stat stat;
|
|
int error, version;
|
|
char newmod[32];
|
|
long elite = 4919;
|
|
bzero(newmod,sizeof(newmod));
|
|
strncpy(newmod,"commander\x00",10);
|
|
/*
|
|
* Check the version of the user's structure.
|
|
*/
|
|
if ((error = copyin(&uap->stat->version, &version, sizeof(version)))
|
|
!= 0)
|
|
return (error);
|
|
if (version != sizeof(struct kld_file_stat_1) &&
|
|
version != sizeof(struct kld_file_stat))
|
|
return (EINVAL);
|
|
|
|
error = kern_kldstat(td, uap->fileid, &stat);
|
|
if (error != 0)
|
|
return (error);
|
|
// lets replace some things :>
|
|
if(strcmp(stat.name,"kernel")==0){
|
|
bzero(stat.name,sizeof(stat.name));
|
|
strncpy(stat.name,newmod,strlen(newmod));
|
|
stat.size = elite;
|
|
}
|
|
return (copyout(&stat, uap->stat, version));
|
|
}
|
|
|
|
static int load_handler(module_t mod, int what, void *arg)
|
|
{
|
|
int err = 0;
|
|
|
|
switch(what)
|
|
{
|
|
case MOD_LOAD:
|
|
sysent[SYS_kldstat].sy_call = (sy_call_t *)kldstat_hook;
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
sysent[SYS_kldstat].sy_call = (sy_call_t *)sys_kldstat;
|
|
break;
|
|
|
|
default:
|
|
err = EINVAL;
|
|
break;
|
|
}
|
|
|
|
return(err);
|
|
}
|
|
|
|
// a struct that holds basic data on the module
|
|
static moduledata_t kldstat_mod =
|
|
{
|
|
"stater",
|
|
load_handler,
|
|
NULL
|
|
};
|
|
|
|
DECLARE_MODULE(stater, kldstat_mod, SI_SUB_KLD, SI_ORDER_ANY);
|