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authorPaul Mackerras <paulus@samba.org>2005-10-10 21:52:43 +1000
committerPaul Mackerras <paulus@samba.org>2005-10-10 21:52:43 +1000
commit70d64ceaa1a84d2502405422a4dfd3f87786a347 (patch)
tree23e38168021988d34b11c6f41cfff82f8095092e /arch/powerpc/lib/usercopy_64.c
parenta432403a89646614252c3bb6dfbe897c8312ab35 (diff)
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powerpc: Rename files to have consistent _32/_64 suffixes
This doesn't change any code, just renames things so we consistently have foo_32.c and foo_64.c where we have separate 32- and 64-bit versions. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/lib/usercopy_64.c')
-rw-r--r--arch/powerpc/lib/usercopy_64.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/lib/usercopy_64.c b/arch/powerpc/lib/usercopy_64.c
new file mode 100644
index 0000000..5eea6f3
--- /dev/null
+++ b/arch/powerpc/lib/usercopy_64.c
@@ -0,0 +1,41 @@
+/*
+ * Functions which are too large to be inlined.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <asm/uaccess.h>
+
+unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ if (likely(access_ok(VERIFY_READ, from, n)))
+ n = __copy_from_user(to, from, n);
+ else
+ memset(to, 0, n);
+ return n;
+}
+
+unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ if (likely(access_ok(VERIFY_WRITE, to, n)))
+ n = __copy_to_user(to, from, n);
+ return n;
+}
+
+unsigned long copy_in_user(void __user *to, const void __user *from,
+ unsigned long n)
+{
+ might_sleep();
+ if (likely(access_ok(VERIFY_READ, from, n) &&
+ access_ok(VERIFY_WRITE, to, n)))
+ n =__copy_tofrom_user(to, from, n);
+ return n;
+}
+
+EXPORT_SYMBOL(copy_from_user);
+EXPORT_SYMBOL(copy_to_user);
+EXPORT_SYMBOL(copy_in_user);
+