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Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/kernel/ptrace.c42
1 files changed, 3 insertions, 39 deletions
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index e82fe296c2c..1dfff5a8f36 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1470,46 +1470,13 @@ ptrace_disable (struct task_struct *child)
child_psr->tb = 0;
}
-asmlinkage long
-sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
+long
+arch_ptrace (struct task_struct *child, long request, long addr, long data)
{
struct pt_regs *pt;
- struct task_struct *child;
struct switch_stack *sw;
long ret;
- lock_kernel();
- ret = -EPERM;
- if (request == PTRACE_TRACEME) {
- ret = ptrace_traceme();
- goto out;
- }
-
- ret = -ESRCH;
- read_lock(&tasklist_lock);
- {
- child = find_task_by_pid(pid);
- if (child)
- get_task_struct(child);
- }
- read_unlock(&tasklist_lock);
- if (!child)
- goto out;
- ret = -EPERM;
- if (pid == 1) /* no messing around with init! */
- goto out_tsk;
-
- if (request == PTRACE_ATTACH) {
- ret = ptrace_attach(child);
- if (!ret)
- arch_ptrace_attach(child);
- goto out_tsk;
- }
-
- ret = ptrace_check_attach(child, request == PTRACE_KILL);
- if (ret < 0)
- goto out_tsk;
-
pt = task_pt_regs(child);
sw = (struct switch_stack *) (child->thread.ksp + 16);
@@ -1594,7 +1561,7 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
*/
if (child->exit_state == EXIT_ZOMBIE)
/* already dead */
- goto out_tsk;
+ return 0;
child->exit_code = SIGKILL;
ptrace_disable(child);
@@ -1643,9 +1610,6 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
goto out_tsk;
}
out_tsk:
- put_task_struct(child);
- out:
- unlock_kernel();
return ret;
}