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support PTRACE_ATTACH.

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fix PTRACE_TRACEME, PTRACE_DETACH.
This commit is contained in:
Susumu Komae
2015-01-30 21:02:01 +09:00
committed by postpeta
parent b26fa4e87c
commit 5f5ab34559
2 changed files with 92 additions and 17 deletions
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13
kernel/process.c
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@@ -360,12 +360,9 @@ int ptrace_traceme(void){
}
dkprintf("ptrace_traceme,parent->pid=%d\n", proc->ftn->parent->pid);
ihk_mc_spinlock_lock_noirq(&proc->ftn->lock);
proc->ftn->ptrace = PT_TRACED | PT_TRACE_EXEC;
proc->ftn->ppid_parent = proc->ftn->parent;
ihk_mc_spinlock_lock_noirq(&proc->ftn->parent->lock);
list_for_each_entry_safe(child, next, &proc->ftn->parent->children, siblings_list) {
if(child == proc->ftn) {
@@ -377,10 +374,12 @@ int ptrace_traceme(void){
error = -EPERM;
goto out_notfound;
found:
proc->ftn->ptrace = PT_TRACED | PT_TRACE_EXEC;
proc->ftn->ppid_parent = proc->ftn->parent;
list_add_tail(&proc->ftn->ptrace_siblings_list, &proc->ftn->parent->ptrace_children);
ihk_mc_spinlock_unlock_noirq(&proc->ftn->parent->lock);
ihk_mc_spinlock_unlock_noirq(&proc->ftn->lock);
if (proc->ptrace_debugreg == NULL) {