%{
#include <linux/sched.h>
#include <linux/list.h>
#include <linux/kernfs.h>
#include <linux/cgroup-defs.h>
%}


probe begin{
        print ("Starting...\n")
}

probe nd_syscall.* {
        if(target() != pid()) next
        printf("%d;%s\n", pid(), getCgroup())
}

function getCgroup:string()%{
        struct task_struct *currently_observed_task = current;
        char fileName[200];
        struct css_set *cgroups = currently_observed_task->cgroups;
        struct cgroup_subsys_state **subsys = cgroups->subsys;
        struct cgroup_subsys_state *firstSubsys = subsys[0];
        struct cgroup *cgroup = firstSubsys->cgroup;
        struct kernfs_node *kn = cgroup->kn;
        int result = kernfs_path_from_node(kn, NULL, fileName, 200*sizeof(char));
        if (result < 0) STAP_ERROR ("cannot resolve cgroup");
        snprintf(STAP_RETVALUE, 200, "%s", fileName);
%}