asmlinkage long sys_getsid(pid_t pid)
{
struct task_struct *p;
struct pid *sid;
int retval;
rcu_read_lock();
if (!pid)
sid = task_session(current);
else {
retval = -ESRCH;
p = find_task_by_vpid(pid);
if (!p)
goto out;
sid = task_session(p);
if (!sid)
goto out;
retval = security_task_getsid(p);
if (retval)
goto out;
}
retval = pid_vnr(sid);
out:
rcu_read_unlock();
return retval;
}
asmlinkage long sys_getsid(pid_t pid)
{
if (!pid) {
return current->signal->session;
} else {
int retval;
struct task_struct *p;
read_lock(&tasklist_lock);
p = find_task_by_pid(pid);
retval = -ESRCH;
if(p) {
retval = security_task_getsid(p);
if (!retval)
retval = p->signal->session;
}
read_unlock(&tasklist_lock);
return retval;
}
}
asmlinkage long sys_getsid(pid_t pid)
{
if (!pid)
return task_session_vnr(current);
else {
int retval;
struct task_struct *p;
struct pid_namespace *ns;
ns = current->nsproxy->pid_ns;
read_lock(&tasklist_lock);
p = find_task_by_pid_ns(pid, ns);
retval = -ESRCH;
if (p) {
retval = security_task_getsid(p);
if (!retval)
retval = task_session_nr_ns(p, ns);
}
read_unlock(&tasklist_lock);
return retval;
}
}