summaryrefslogtreecommitdiff
path: root/arch/xtensa/kernel/ptrace.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/xtensa/kernel/ptrace.c')
-rw-r--r--arch/xtensa/kernel/ptrace.c55
1 files changed, 2 insertions, 53 deletions
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index 14460743de07..ab5c4c65b5c4 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.. */
}
-long 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 @@ long 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;
}