1 files changed, 73 insertions, 0 deletions
diff --git a/arch/um/kernel/tt/uaccess.c b/arch/um/kernel/tt/uaccess.c
new file mode 100644
index 000000000000..a72aa632972f
--- /dev/null
+++ b/arch/um/kernel/tt/uaccess.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/sched.h"
+#include "asm/uaccess.h"
+
+int copy_from_user_tt(void *to, const void __user *from, int n)
+{
+	if(!access_ok_tt(VERIFY_READ, from, n))
+		return(n);
+
+	return(__do_copy_from_user(to, from, n, &current->thread.fault_addr,
+				   &current->thread.fault_catcher));
+}
+
+int copy_to_user_tt(void __user *to, const void *from, int n)
+{
+	if(!access_ok_tt(VERIFY_WRITE, to, n))
+		return(n);
+
+	return(__do_copy_to_user(to, from, n, &current->thread.fault_addr,
+				 &current->thread.fault_catcher));
+}
+
+int strncpy_from_user_tt(char *dst, const char __user *src, int count)
+{
+	int n;
+
+	if(!access_ok_tt(VERIFY_READ, src, 1))
+		return(-EFAULT);
+
+	n = __do_strncpy_from_user(dst, src, count,
+				   &current->thread.fault_addr,
+				   &current->thread.fault_catcher);
+	if(n < 0) return(-EFAULT);
+	return(n);
+}
+
+int __clear_user_tt(void __user *mem, int len)
+{
+	return(__do_clear_user(mem, len,
+			       &current->thread.fault_addr,
+			       &current->thread.fault_catcher));
+}
+
+int clear_user_tt(void __user *mem, int len)
+{
+	if(!access_ok_tt(VERIFY_WRITE, mem, len))
+		return(len);
+
+	return(__do_clear_user(mem, len, &current->thread.fault_addr,
+			       &current->thread.fault_catcher));
+}
+
+int strnlen_user_tt(const void __user *str, int len)
+{
+	return(__do_strnlen_user(str, len,
+				 &current->thread.fault_addr,
+				 &current->thread.fault_catcher));
+}
+
+/*
+ * 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:
+ */