diff options
Diffstat (limited to 'runtime/task_finder.c')
| -rw-r--r-- | runtime/task_finder.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/runtime/task_finder.c b/runtime/task_finder.c index ca807020..fb6dc20d 100644 --- a/runtime/task_finder.c +++ b/runtime/task_finder.c @@ -753,6 +753,18 @@ __stp_utrace_attach_match_filename(struct task_struct *tsk, /* Notice that "pid == 0" (which means to probe all * threads) falls through. */ +#ifndef STP_PRIVILEGED + /* Make sure unprivileged users only probe their own threads. */ + if (_stp_uid != tsk->euid) { + if (tgt->pid != 0) { + _stp_warn("Process %d does not belong to unprivileged user %d", + tsk->pid, _stp_uid); + } + continue; + } +#endif + + // Set up events we need for attached tasks. When // register_p is set, we won't actually call the // callbacks here - we'll call it when the thread gets @@ -1414,6 +1426,17 @@ stap_start_task_finder(void) /* Notice that "pid == 0" (which means to * probe all threads) falls through. */ +#ifndef STP_PRIVILEGED + /* Make sure unprivileged users only probe their own threads. */ + if (_stp_uid != tsk->euid) { + if (tgt->pid != 0) { + _stp_warn("Process %d does not belong to unprivileged user %d", + tsk->pid, _stp_uid); + } + continue; + } +#endif + // Set up events we need for attached tasks. rc = __stp_utrace_attach(tsk, &tgt->ops, tgt, __STP_ATTACHED_TASK_EVENTS, |