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probe begin
{
curr = task_current()
// Compare PIDs
pid = pid()
cast_pid = @cast(curr, "task_struct")->tgid
if (pid == cast_pid)
println("PID OK")
else
printf("PID %d != %d\n", pid, cast_pid)
// Compare PIDs using a generated kernel module
cast_pid = @cast(curr, "task_struct", "kmod<linux/sched.h>")->tgid
if (pid == cast_pid)
println("PID2 OK")
else
printf("PID2 %d != %d\n", pid, cast_pid)
// Compare execnames
name = execname()
cast_name = kernel_string(@cast(curr, "task_struct")->comm)
if (name == cast_name)
println("execname OK")
else
printf("execname \"%s\" != \"%s\"\n", name, cast_name)
// Compare tv_sec using a generated user module
sec = 42
cast_sec = @cast(get_timeval(sec), "timeval", "umod<sys/time.h>")->tv_sec
if (sec == cast_sec)
println("tv_sec OK")
else
printf("tv_sec %d != %d\n", sec, cast_sec)
exit()
}
function get_timeval:long(sec:long) %{
static struct timeval mytime = {0};
mytime.tv_sec = THIS->sec;
THIS->__retvalue = (long)&mytime;
%}
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