Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / arch / v850 / kernel / ptrace.c

diff --git a/arch/v850/kernel/ptrace.c b/arch/v850/kernel/ptrace.c
index db4116e..061bd4d 100644 (file)
--- a/arch/v850/kernel/ptrace.c
+++ b/arch/v850/kernel/ptrace.c
@@ -58,7 +58,7 @@ static v850_reg_t *reg_save_addr (unsigned reg_offs, struct task_struct *t)
                regs = thread_saved_regs (t);
        else
                /* Register saved during kernel entry (or not available).  */
-               regs = task_regs (t);
+               regs = task_pt_regs (t);
 
        return (v850_reg_t *)((char *)regs + reg_offs);
 }
@@ -113,47 +113,10 @@ static int set_single_step (struct task_struct *t, int val)
        return 1;
 }
 
-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 rval;
 
-       lock_kernel();
-
-       if (request == PTRACE_TRACEME) {
-               /* are we already being traced? */
-               if (current->ptrace & PT_PTRACED) {
-                       rval = -EPERM;
-                       goto out;
-               }
-               /* set the ptrace bit in the process flags. */
-               current->ptrace |= PT_PTRACED;
-               rval = 0;
-               goto out;
-       }
-       rval = -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;
-       if (!vx_check(vx_task_xid(child), VX_WATCH|VX_IDENT))
-               goto out_tsk;
-
-       rval = -EPERM;
-       if (pid == 1)           /* you may not mess with init */
-               goto out_tsk;
-
-       if (request == PTRACE_ATTACH) {
-               rval = ptrace_attach(child);
-               goto out_tsk;
-       }
-       rval = ptrace_check_attach(child, request == PTRACE_KILL);
-       if (rval < 0)
-               goto out_tsk;
-
        switch (request) {
                unsigned long val, copied;
 
@@ -174,6 +137,8 @@ int sys_ptrace(long request, long pid, long addr, long data)
                        break;
                rval = -EIO;
                goto out;
+       if (!vx_check(vx_task_xid(child), VX_WATCH|VX_IDENT))
+               goto out_tsk;
 
        /* Read/write the word at location ADDR in the registers.  */
        case PTRACE_PEEKUSR:
@@ -250,11 +215,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
                rval = -EIO;
                goto out;
        }
-
-out_tsk:
-       put_task_struct(child);
-out:
-       unlock_kernel();
+ out:
        return rval;
 }