From 06d984737bac0545fe20bb5447ee488b95adb531 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 17 Jun 2011 16:50:40 +0200 Subject: ptrace: s/tracehook_tracer_task()/ptrace_parent()/ tracehook.h is on the way out. Rename tracehook_tracer_task() to ptrace_parent() and move it from tracehook.h to ptrace.h. Signed-off-by: Tejun Heo Cc: Christoph Hellwig Cc: John Johansen Cc: Stephen Smalley Signed-off-by: Oleg Nesterov --- include/linux/ptrace.h | 18 ++++++++++++++++++ include/linux/tracehook.h | 18 ------------------ 2 files changed, 18 insertions(+), 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index b546fd6c3506..bb157bdd0c55 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -150,6 +150,24 @@ int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr, int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr, unsigned long data); +/** + * ptrace_parent - return the task that is tracing the given task + * @task: task to consider + * + * Returns %NULL if no one is tracing @task, or the &struct task_struct + * pointer to its tracer. + * + * Must called under rcu_read_lock(). The pointer returned might be kept + * live only by RCU. During exec, this may be called with task_lock() held + * on @task, still held from when check_unsafe_exec() was called. + */ +static inline struct task_struct *ptrace_parent(struct task_struct *task) +{ + if (unlikely(task->ptrace)) + return rcu_dereference(task->parent); + return NULL; +} + /** * ptrace_event_enabled - test whether a ptrace event is enabled * @task: ptracee of interest diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index bcc4ca762aee..7a1bd12aeffa 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -129,24 +129,6 @@ static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step) ptrace_report_syscall(regs); } -/** - * tracehook_tracer_task - return the task that is tracing the given task - * @tsk: task to consider - * - * Returns NULL if no one is tracing @task, or the &struct task_struct - * pointer to its tracer. - * - * Must called under rcu_read_lock(). The pointer returned might be kept - * live only by RCU. During exec, this may be called with task_lock() - * held on @task, still held from when tracehook_unsafe_exec() was called. - */ -static inline struct task_struct *tracehook_tracer_task(struct task_struct *tsk) -{ - if (tsk->ptrace & PT_PTRACED) - return rcu_dereference(tsk->parent); - return NULL; -} - /** * tracehook_signal_handler - signal handler setup is complete * @sig: number of signal being delivered -- cgit v1.2.3