ptrace_check_attach

Name:ptrace_check_attach - check whether ptracee is ready for ptrace operation*@child: ptracee to check for*@ignore_state: don't check whether @child is currently %TASK_TRACED* Check whether @child is being ptraced by %current and ready for further

Proto:static int ptrace_check_attach(struct task_struct *child, bool ignore_state)

Type:int

Parameter:

Type	Parameter	Name
struct task_struct *	child
bool	ignore_state

231

ret = -ESRCH

240

read_lock( & tasklist_lock)

241

If ptrace && Recipient of SIGCHLD, wait4() reports: == current process Then

242

WARN_ON(run state == __TASK_TRACED)

247

If ignore_state || Ensure that nothing can wake it up, even SIGKILL Then ret = 0

250

read_unlock( & tasklist_lock)

252

If Not ret && Not ignore_state Then

253

If Not wait_task_inactive(child, __TASK_TRACED) Then

259

WARN_ON(run state == __TASK_TRACED)

260

ret = -ESRCH

264

Return ret

**Caller**
Name	Describe
SYSCALL_DEFINE4
COMPAT_SYSCALL_DEFINE4

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion