patch-2.4.10 linux/arch/s390/kernel/ptrace.c
Next file: linux/arch/s390/mm/init.c
Previous file: linux/arch/s390/kernel/init_task.c
Back to the patch index
Back to the overall index
- Lines: 40
- Date:
Tue Sep 18 16:58:03 2001
- Orig file:
v2.4.9/linux/arch/s390/kernel/ptrace.c
- Orig date:
Wed Jul 25 17:10:18 2001
diff -u --recursive --new-file v2.4.9/linux/arch/s390/kernel/ptrace.c linux/arch/s390/kernel/ptrace.c
@@ -202,6 +202,17 @@
return(0);
}
+/*
+ * Called by kernel/ptrace.c when detaching..
+ *
+ * Make sure single step bits etc are not set.
+ */
+void ptrace_disable(struct task_struct *child)
+{
+ /* make sure the single step bit is not set. */
+ clear_single_step(child);
+}
+
asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
{
struct task_struct *child;
@@ -327,20 +338,7 @@
break;
case PTRACE_DETACH: /* detach a process that was attached. */
- ret = -EIO;
- if ((unsigned long) data >= _NSIG)
- break;
- child->ptrace &= ~(PT_PTRACED|PT_TRACESYS);
- child->exit_code = data;
- write_lock_irqsave(&tasklist_lock, flags);
- REMOVE_LINKS(child);
- child->p_pptr = child->p_opptr;
- SET_LINKS(child);
- write_unlock_irqrestore(&tasklist_lock, flags);
- /* make sure the single step bit is not set. */
- clear_single_step(child);
- wake_up_process(child);
- ret = 0;
+ ret = ptrace_detach(child, data);
break;
case PTRACE_PEEKUSR_AREA:
case PTRACE_POKEUSR_AREA:
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)