diff options
Diffstat (limited to 'arch/xtensa/kernel/ptrace.c')
-rw-r--r-- | arch/xtensa/kernel/ptrace.c | 55 |
1 files changed, 2 insertions, 53 deletions
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c index 2659efdd4e9..ab5c4c65b5c 100644 --- a/arch/xtensa/kernel/ptrace.c +++ b/arch/xtensa/kernel/ptrace.c @@ -45,58 +45,10 @@ void ptrace_disable(struct task_struct *child) /* Nothing to do.. */ } -int sys_ptrace(long request, long pid, long addr, long data) +long arch_ptrace(struct task_struct *child, long request, long addr, long data) { - struct task_struct *child; int ret = -EPERM; - lock_kernel(); - -#if 0 - if ((int)request != 1) - printk("ptrace(r=%d,pid=%d,addr=%08lx,data=%08lx)\n", - (int) request, (int) pid, (unsigned long) addr, - (unsigned long) data); -#endif - - if (request == PTRACE_TRACEME) { - - /* Are we already being traced? */ - - if (current->ptrace & PT_PTRACED) - goto out; - - if ((ret = security_ptrace(current->parent, current))) - goto out; - - /* Set the ptrace bit in the process flags. */ - - current->ptrace |= PT_PTRACED; - ret = 0; - 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) /* you may not mess with init */ - goto out; - - if (request == PTRACE_ATTACH) { - ret = ptrace_attach(child); - goto out_tsk; - } - - if ((ret = ptrace_check_attach(child, request == PTRACE_KILL)) < 0) - goto out_tsk; - switch (request) { case PTRACE_PEEKTEXT: /* read word at location addr. */ case PTRACE_PEEKDATA: @@ -375,10 +327,7 @@ int sys_ptrace(long request, long pid, long addr, long data) ret = ptrace_request(child, request, addr, data); goto out; } -out_tsk: - put_task_struct(child); -out: - unlock_kernel(); + out: return ret; } |