Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / nfs.h

diff --git a/kernel/include/linux/nfs.h b/kernel/include/linux/nfs.h
new file mode 100644 (file)
index 0000000..610af51
--- /dev/null
+++ b/kernel/include/linux/nfs.h
@@ -0,0 +1,54 @@
+/*
+ * NFS protocol definitions
+ *
+ * This file contains constants mostly for Version 2 of the protocol,
+ * but also has a couple of NFSv3 bits in (notably the error codes).
+ */
+#ifndef _LINUX_NFS_H
+#define _LINUX_NFS_H
+
+#include <linux/sunrpc/msg_prot.h>
+#include <linux/string.h>
+#include <uapi/linux/nfs.h>
+
+/*
+ * This is the kernel NFS client file handle representation
+ */
+#define NFS_MAXFHSIZE          128
+struct nfs_fh {
+       unsigned short          size;
+       unsigned char           data[NFS_MAXFHSIZE];
+};
+
+/*
+ * Returns a zero iff the size and data fields match.
+ * Checks only "size" bytes in the data field.
+ */
+static inline int nfs_compare_fh(const struct nfs_fh *a, const struct nfs_fh *b)
+{
+       return a->size != b->size || memcmp(a->data, b->data, a->size) != 0;
+}
+
+static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *source)
+{
+       target->size = source->size;
+       memcpy(target->data, source->data, source->size);
+}
+
+
+/*
+ * This is really a general kernel constant, but since nothing like
+ * this is defined in the kernel headers, I have to do it here.
+ */
+#define NFS_OFFSET_MAX         ((__s64)((~(__u64)0) >> 1))
+
+
+enum nfs3_stable_how {
+       NFS_UNSTABLE = 0,
+       NFS_DATA_SYNC = 1,
+       NFS_FILE_SYNC = 2,
+
+       /* used by direct.c to mark verf as invalid */
+       NFS_INVALID_STABLE_HOW = -1
+};
+#endif /* _LINUX_NFS_H */