diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/ptrace.h | 13 | ||||
-rw-r--r-- | include/linux/tracehook.h | 28 |
2 files changed, 41 insertions, 0 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index dae6d85..ed69c03 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -176,6 +176,19 @@ static inline void ptrace_init_task(struct task_struct *child, bool ptrace) } } +/** + * ptrace_release_task - final ptrace-related cleanup of a zombie being reaped + * @task: task in %EXIT_DEAD state + * + * Called with write_lock(&tasklist_lock) held. + */ +static inline void ptrace_release_task(struct task_struct *task) +{ + BUG_ON(!list_empty(&task->ptraced)); + ptrace_unlink(task); + BUG_ON(!list_empty(&task->ptrace_entry)); +} + #ifndef force_successful_syscall_return /* * System call handlers that, upon successful completion, need to return a diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 830e6e1..9a5b3be 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -228,4 +228,32 @@ static inline void tracehook_report_vfork_done(struct task_struct *child, ptrace_event(PT_TRACE_VFORK_DONE, PTRACE_EVENT_VFORK_DONE, pid); } +/** + * tracehook_prepare_release_task - task is being reaped, clean up tracing + * @task: task in %EXIT_DEAD state + * + * This is called in release_task() just before @task gets finally reaped + * and freed. This would be the ideal place to remove and clean up any + * tracing-related state for @task. + * + * Called with no locks held. + */ +static inline void tracehook_prepare_release_task(struct task_struct *task) +{ +} + +/** + * tracehook_finish_release_task - task is being reaped, clean up tracing + * @task: task in %EXIT_DEAD state + * + * This is called in release_task() when @task is being in the middle of + * being reaped. After this, there must be no tracing entanglements. + * + * Called with write_lock_irq(&tasklist_lock) held. + */ +static inline void tracehook_finish_release_task(struct task_struct *task) +{ + ptrace_release_task(task); +} + #endif /* <linux/tracehook.h> */ |