No functional changes, preparation for utrace-ptrace. task_ptrace() != 0 if and only if PT_PTRACED bit is set, kill some PT_PTRACED checks in tracehook.h.
Signed-off-by: Oleg Nesterov <o...@redhat.com> --- include/linux/tracehook.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- V1/include/linux/tracehook.h~1_TRACEHOOK_KILL_PTRACED_CHECKS 2009-09-24 21:38:54.000000000 +0200 +++ V1/include/linux/tracehook.h 2009-10-25 23:34:16.000000000 +0100 @@ -149,7 +149,7 @@ static inline int tracehook_unsafe_exec( { int unsafe = 0; int ptrace = task_ptrace(task); - if (ptrace & PT_PTRACED) { + if (ptrace) { if (ptrace & PT_PTRACE_CAP) unsafe |= LSM_UNSAFE_PTRACE_CAP; else @@ -171,7 +171,7 @@ static inline int tracehook_unsafe_exec( */ static inline struct task_struct *tracehook_tracer_task(struct task_struct *tsk) { - if (task_ptrace(tsk) & PT_PTRACED) + if (task_ptrace(tsk)) return rcu_dereference(tsk->parent); return NULL; } @@ -485,7 +485,7 @@ static inline int tracehook_get_signal(s */ static inline int tracehook_notify_jctl(int notify, int why) { - return notify ?: (current->ptrace & PT_PTRACED) ? why : 0; + return notify ?: task_ptrace(current) ? why : 0; } /**