ptrace: introduce ptrace_reparented() helper

Add another trivial helper for the sake of grep.  It also auto-documents the
fact that ->parent != real_parent implies ->ptrace.

No functional changes.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2008-04-30 00:53:13 -07:00 committed by Linus Torvalds
parent 2800d8d19e
commit 53b6f9fbd3
2 changed files with 8 additions and 5 deletions

View file

@ -98,6 +98,10 @@ extern void ptrace_untrace(struct task_struct *child);
extern int ptrace_may_attach(struct task_struct *task);
extern int __ptrace_may_attach(struct task_struct *task);
static inline int ptrace_reparented(struct task_struct *child)
{
return child->real_parent != child->parent;
}
static inline void ptrace_link(struct task_struct *child,
struct task_struct *new_parent)
{