Merge branch 'mv-merge'

[linux-2.6-omap-h63xx.git] / arch / um / kernel / ptrace.c

diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 2925e15324de370b29689b9587cc6311d95f935a..98e09395c093c1d75be57ab82ed3b46c084e533f 100644 (file)
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -43,53 +43,10 @@ void ptrace_disable(struct task_struct *child)
 extern int peek_user(struct task_struct * child, long addr, long data);
 extern int poke_user(struct task_struct * child, long addr, long data);
 
-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 i, ret;
 
-       lock_kernel();
-       ret = -EPERM;
-       if (request == PTRACE_TRACEME) {
-               /* are we already being traced? */
-               if (current->ptrace & PT_PTRACED)
-                       goto out;
-
-               ret = security_ptrace(current->parent, current);
-               if (ret)
-                       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_tsk;
-
-       if (request == PTRACE_ATTACH) {
-               ret = ptrace_attach(child);
-               goto out_tsk;
-       }
-
-#ifdef SUBACH_PTRACE_SPECIAL
-        SUBARCH_PTRACE_SPECIAL(child,request,addr,data);
-#endif
-
-       ret = ptrace_check_attach(child, request == PTRACE_KILL);
-       if (ret < 0)
-               goto out_tsk;
-
        switch (request) {
                /* when I and D space are separate, these will need to be fixed. */
        case PTRACE_PEEKTEXT: /* read word at location addr. */ 
@@ -282,10 +239,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
                ret = ptrace_request(child, request, addr, data);
                break;
        }
- out_tsk:
-       put_task_struct(child);
- out:
-       unlock_kernel();
+
        return ret;
 }
 
@@ -322,11 +276,9 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit)
                                            UPT_SYSCALL_ARG2(regs),
                                            UPT_SYSCALL_ARG3(regs),
                                            UPT_SYSCALL_ARG4(regs));
-               else {
-                        int res = UPT_SYSCALL_RET(regs);
-                       audit_syscall_exit(current, AUDITSC_RESULT(res),
-                                           res);
-                }
+               else audit_syscall_exit(current,
+                                        AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
+                                        UPT_SYSCALL_RET(regs));
        }
 
        /* Fake a debug trap */
@@ -356,14 +308,3 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit)
                current->exit_code = 0;
        }
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */