diff options
Diffstat (limited to 'include/linux/tracehook.h')
-rw-r--r-- | include/linux/tracehook.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 3b68aa842a92..8b06d4f2b814 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h | |||
@@ -51,21 +51,6 @@ | |||
51 | #include <linux/security.h> | 51 | #include <linux/security.h> |
52 | struct linux_binprm; | 52 | struct linux_binprm; |
53 | 53 | ||
54 | /** | ||
55 | * tracehook_expect_breakpoints - guess if task memory might be touched | ||
56 | * @task: current task, making a new mapping | ||
57 | * | ||
58 | * Return nonzero if @task is expected to want breakpoint insertion in | ||
59 | * its memory at some point. A zero return is no guarantee it won't | ||
60 | * be done, but this is a hint that it's known to be likely. | ||
61 | * | ||
62 | * May be called with @task->mm->mmap_sem held for writing. | ||
63 | */ | ||
64 | static inline int tracehook_expect_breakpoints(struct task_struct *task) | ||
65 | { | ||
66 | return (task->ptrace & PT_PTRACED) != 0; | ||
67 | } | ||
68 | |||
69 | /* | 54 | /* |
70 | * ptrace report for syscall entry and exit looks identical. | 55 | * ptrace report for syscall entry and exit looks identical. |
71 | */ | 56 | */ |
@@ -184,42 +169,6 @@ static inline struct task_struct *tracehook_tracer_task(struct task_struct *tsk) | |||
184 | } | 169 | } |
185 | 170 | ||
186 | /** | 171 | /** |
187 | * tracehook_report_exec - a successful exec was completed | ||
188 | * @fmt: &struct linux_binfmt that performed the exec | ||
189 | * @bprm: &struct linux_binprm containing exec details | ||
190 | * @regs: user-mode register state | ||
191 | * | ||
192 | * An exec just completed, we are shortly going to return to user mode. | ||
193 | * The freshly initialized register state can be seen and changed in @regs. | ||
194 | * The name, file and other pointers in @bprm are still on hand to be | ||
195 | * inspected, but will be freed as soon as this returns. | ||
196 | * | ||
197 | * Called with no locks, but with some kernel resources held live | ||
198 | * and a reference on @fmt->module. | ||
199 | */ | ||
200 | static inline void tracehook_report_exec(struct linux_binfmt *fmt, | ||
201 | struct linux_binprm *bprm, | ||
202 | struct pt_regs *regs) | ||
203 | { | ||
204 | ptrace_event(PTRACE_EVENT_EXEC, 0); | ||
205 | } | ||
206 | |||
207 | /** | ||
208 | * tracehook_report_exit - task has begun to exit | ||
209 | * @exit_code: pointer to value destined for @current->exit_code | ||
210 | * | ||
211 | * @exit_code points to the value passed to do_exit(), which tracing | ||
212 | * might change here. This is almost the first thing in do_exit(), | ||
213 | * before freeing any resources or setting the %PF_EXITING flag. | ||
214 | * | ||
215 | * Called with no locks held. | ||
216 | */ | ||
217 | static inline void tracehook_report_exit(long *exit_code) | ||
218 | { | ||
219 | ptrace_event(PTRACE_EVENT_EXIT, *exit_code); | ||
220 | } | ||
221 | |||
222 | /** | ||
223 | * tracehook_prepare_clone - prepare for new child to be cloned | 172 | * tracehook_prepare_clone - prepare for new child to be cloned |
224 | * @clone_flags: %CLONE_* flags from clone/fork/vfork system call | 173 | * @clone_flags: %CLONE_* flags from clone/fork/vfork system call |
225 | * | 174 | * |
@@ -320,52 +269,6 @@ static inline void tracehook_report_clone_complete(int trace, | |||
320 | } | 269 | } |
321 | 270 | ||
322 | /** | 271 | /** |
323 | * tracehook_report_vfork_done - vfork parent's child has exited or exec'd | ||
324 | * @child: child task, already running | ||
325 | * @pid: new child's PID in the parent's namespace | ||
326 | * | ||
327 | * Called after a %CLONE_VFORK parent has waited for the child to complete. | ||
328 | * The clone/vfork system call will return immediately after this. | ||
329 | * The @child pointer may be invalid if a self-reaping child died and | ||
330 | * tracehook_report_clone() took no action to prevent it from self-reaping. | ||
331 | * | ||
332 | * Called with no locks held. | ||
333 | */ | ||
334 | static inline void tracehook_report_vfork_done(struct task_struct *child, | ||
335 | pid_t pid) | ||
336 | { | ||
337 | ptrace_event(PTRACE_EVENT_VFORK_DONE, pid); | ||
338 | } | ||
339 | |||
340 | /** | ||
341 | * tracehook_prepare_release_task - task is being reaped, clean up tracing | ||
342 | * @task: task in %EXIT_DEAD state | ||
343 | * | ||
344 | * This is called in release_task() just before @task gets finally reaped | ||
345 | * and freed. This would be the ideal place to remove and clean up any | ||
346 | * tracing-related state for @task. | ||
347 | * | ||
348 | * Called with no locks held. | ||
349 | */ | ||
350 | static inline void tracehook_prepare_release_task(struct task_struct *task) | ||
351 | { | ||
352 | } | ||
353 | |||
354 | /** | ||
355 | * tracehook_finish_release_task - final tracing clean-up | ||
356 | * @task: task in %EXIT_DEAD state | ||
357 | * | ||
358 | * This is called in release_task() when @task is being in the middle of | ||
359 | * being reaped. After this, there must be no tracing entanglements. | ||
360 | * | ||
361 | * Called with write_lock_irq(&tasklist_lock) held. | ||
362 | */ | ||
363 | static inline void tracehook_finish_release_task(struct task_struct *task) | ||
364 | { | ||
365 | ptrace_release_task(task); | ||
366 | } | ||
367 | |||
368 | /** | ||
369 | * tracehook_signal_handler - signal handler setup is complete | 272 | * tracehook_signal_handler - signal handler setup is complete |
370 | * @sig: number of signal being delivered | 273 | * @sig: number of signal being delivered |
371 | * @info: siginfo_t of signal being delivered | 274 | * @info: siginfo_t of signal being delivered |
@@ -388,41 +291,6 @@ static inline void tracehook_signal_handler(int sig, siginfo_t *info, | |||
388 | ptrace_notify(SIGTRAP); | 291 | ptrace_notify(SIGTRAP); |
389 | } | 292 | } |
390 | 293 | ||
391 | /** | ||
392 | * tracehook_consider_ignored_signal - suppress short-circuit of ignored signal | ||
393 | * @task: task receiving the signal | ||
394 | * @sig: signal number being sent | ||
395 | * | ||
396 | * Return zero iff tracing doesn't care to examine this ignored signal, | ||
397 | * so it can short-circuit normal delivery and never even get queued. | ||
398 | * | ||
399 | * Called with @task->sighand->siglock held. | ||
400 | */ | ||
401 | static inline int tracehook_consider_ignored_signal(struct task_struct *task, | ||
402 | int sig) | ||
403 | { | ||
404 | return (task->ptrace & PT_PTRACED) != 0; | ||
405 | } | ||
406 | |||
407 | /** | ||
408 | * tracehook_consider_fatal_signal - suppress special handling of fatal signal | ||
409 | * @task: task receiving the signal | ||
410 | * @sig: signal number being sent | ||
411 | * | ||
412 | * Return nonzero to prevent special handling of this termination signal. | ||
413 | * Normally handler for signal is %SIG_DFL. It can be %SIG_IGN if @sig is | ||
414 | * ignored, in which case force_sig() is about to reset it to %SIG_DFL. | ||
415 | * When this returns zero, this signal might cause a quick termination | ||
416 | * that does not give the debugger a chance to intercept the signal. | ||
417 | * | ||
418 | * Called with or without @task->sighand->siglock held. | ||
419 | */ | ||
420 | static inline int tracehook_consider_fatal_signal(struct task_struct *task, | ||
421 | int sig) | ||
422 | { | ||
423 | return (task->ptrace & PT_PTRACED) != 0; | ||
424 | } | ||
425 | |||
426 | #define DEATH_REAP -1 | 294 | #define DEATH_REAP -1 |
427 | #define DEATH_DELAYED_GROUP_LEADER -2 | 295 | #define DEATH_DELAYED_GROUP_LEADER -2 |
428 | 296 | ||
@@ -457,30 +325,6 @@ static inline int tracehook_notify_death(struct task_struct *task, | |||
457 | return task->ptrace ? SIGCHLD : DEATH_DELAYED_GROUP_LEADER; | 325 | return task->ptrace ? SIGCHLD : DEATH_DELAYED_GROUP_LEADER; |
458 | } | 326 | } |
459 | 327 | ||
460 | /** | ||
461 | * tracehook_report_death - task is dead and ready to be reaped | ||
462 | * @task: @current task now exiting | ||
463 | * @signal: return value from tracheook_notify_death() | ||
464 | * @death_cookie: value passed back from tracehook_notify_death() | ||
465 | * @group_dead: nonzero if this was the last thread in the group to die | ||
466 | * | ||
467 | * Thread has just become a zombie or is about to self-reap. If positive, | ||
468 | * @signal is the signal number just sent to the parent (usually %SIGCHLD). | ||
469 | * If @signal is %DEATH_REAP, this thread will self-reap. If @signal is | ||
470 | * %DEATH_DELAYED_GROUP_LEADER, this is a delayed_group_leader() zombie. | ||
471 | * The @death_cookie was passed back by tracehook_notify_death(). | ||
472 | * | ||
473 | * If normal reaping is not inhibited, @task->exit_state might be changing | ||
474 | * in parallel. | ||
475 | * | ||
476 | * Called without locks. | ||
477 | */ | ||
478 | static inline void tracehook_report_death(struct task_struct *task, | ||
479 | int signal, void *death_cookie, | ||
480 | int group_dead) | ||
481 | { | ||
482 | } | ||
483 | |||
484 | #ifdef TIF_NOTIFY_RESUME | 328 | #ifdef TIF_NOTIFY_RESUME |
485 | /** | 329 | /** |
486 | * set_notify_resume - cause tracehook_notify_resume() to be called | 330 | * set_notify_resume - cause tracehook_notify_resume() to be called |