summaryrefslogtreecommitdiff
path: root/libdde_linux26/contrib/include/asm-generic/uaccess.h
diff options
context:
space:
mode:
authorSamuel Thibault <samuel.thibault@ens-lyon.org>2012-02-19 06:14:24 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2012-02-19 06:14:24 +0000
commit6fafeb146e9efd59140ea58cebd7dd38ae9a6379 (patch)
tree7db89ba6a28932514b105d620bba4884ec332ec3 /libdde_linux26/contrib/include/asm-generic/uaccess.h
parent38c2c2458e3f4ecb329ff35621806252aac209b9 (diff)
parent8df772b3c665e663f6f9d2a70f9c691590bd3f91 (diff)
Merge branch 'dde' into upstream-merged
Diffstat (limited to 'libdde_linux26/contrib/include/asm-generic/uaccess.h')
-rw-r--r--libdde_linux26/contrib/include/asm-generic/uaccess.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/libdde_linux26/contrib/include/asm-generic/uaccess.h b/libdde_linux26/contrib/include/asm-generic/uaccess.h
new file mode 100644
index 00000000..549cb3a1
--- /dev/null
+++ b/libdde_linux26/contrib/include/asm-generic/uaccess.h
@@ -0,0 +1,26 @@
+#ifndef _ASM_GENERIC_UACCESS_H_
+#define _ASM_GENERIC_UACCESS_H_
+
+/*
+ * This macro should be used instead of __get_user() when accessing
+ * values at locations that are not known to be aligned.
+ */
+#define __get_user_unaligned(x, ptr) \
+({ \
+ __typeof__ (*(ptr)) __x; \
+ __copy_from_user(&__x, (ptr), sizeof(*(ptr))) ? -EFAULT : 0; \
+ (x) = __x; \
+})
+
+
+/*
+ * This macro should be used instead of __put_user() when accessing
+ * values at locations that are not known to be aligned.
+ */
+#define __put_user_unaligned(x, ptr) \
+({ \
+ __typeof__ (*(ptr)) __x = (x); \
+ __copy_to_user((ptr), &__x, sizeof(*(ptr))) ? -EFAULT : 0; \
+})
+
+#endif /* _ASM_GENERIC_UACCESS_H */