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authorMichal Simek <monstr@monstr.eu>2009-03-27 14:25:23 +0100
committerMichal Simek <monstr@monstr.eu>2009-03-27 14:25:23 +0100
commit2660663ff2d34a3665381a2591bbc3ce0cdbd69c (patch)
tree46cc31cc8d95ffc37b5362990e0940bf0461f9c1 /arch/microblaze/lib
parent89272a51b322aa14332d58896b9d377ea9b4e551 (diff)
downloadlinux-2660663ff2d34a3665381a2591bbc3ce0cdbd69c.tar.gz
microblaze_v8: uaccess files
Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/lib')
-rw-r--r--arch/microblaze/lib/uaccess.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/microblaze/lib/uaccess.c b/arch/microblaze/lib/uaccess.c
new file mode 100644
index 00000000000..8eb9df5a26c
--- /dev/null
+++ b/arch/microblaze/lib/uaccess.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/string.h>
+#include <asm/uaccess.h>
+
+#include <asm/bug.h>
+
+long strnlen_user(const char __user *src, long count)
+{
+ return strlen(src) + 1;
+}
+
+#define __do_strncpy_from_user(dst, src, count, res) \
+ do { \
+ char *tmp; \
+ strncpy(dst, src, count); \
+ for (tmp = dst; *tmp && count > 0; tmp++, count--) \
+ ; \
+ res = (tmp - dst); \
+ } while (0)
+
+long __strncpy_from_user(char *dst, const char __user *src, long count)
+{
+ long res;
+ __do_strncpy_from_user(dst, src, count, res);
+ return res;
+}
+
+long strncpy_from_user(char *dst, const char __user *src, long count)
+{
+ long res = -EFAULT;
+ if (access_ok(VERIFY_READ, src, 1))
+ __do_strncpy_from_user(dst, src, count, res);
+ return res;
+}