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Diffstat (limited to 'fs/nfsd/nfsfh.h')
-rw-r--r--fs/nfsd/nfsfh.h97
1 files changed, 96 insertions, 1 deletions
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index 6106697adc04..ad47f16676a8 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -10,9 +10,104 @@
#include <linux/crc32.h>
#include <linux/sunrpc/svc.h>
-#include <uapi/linux/nfsd/nfsfh.h>
#include <linux/iversion.h>
#include <linux/exportfs.h>
+#include <linux/nfs4.h>
+
+
+/*
+ * This is the old "dentry style" Linux NFSv2 file handle.
+ *
+ * The xino and xdev fields are currently used to transport the
+ * ino/dev of the exported inode.
+ */
+struct nfs_fhbase_old {
+ u32 fb_dcookie; /* dentry cookie - always 0xfeebbaca */
+ u32 fb_ino; /* our inode number */
+ u32 fb_dirino; /* dir inode number, 0 for directories */
+ u32 fb_dev; /* our device */
+ u32 fb_xdev;
+ u32 fb_xino;
+ u32 fb_generation;
+};
+
+/*
+ * This is the new flexible, extensible style NFSv2/v3/v4 file handle.
+ *
+ * The file handle starts with a sequence of four-byte words.
+ * The first word contains a version number (1) and three descriptor bytes
+ * that tell how the remaining 3 variable length fields should be handled.
+ * These three bytes are auth_type, fsid_type and fileid_type.
+ *
+ * All four-byte values are in host-byte-order.
+ *
+ * The auth_type field is deprecated and must be set to 0.
+ *
+ * The fsid_type identifies how the filesystem (or export point) is
+ * encoded.
+ * Current values:
+ * 0 - 4 byte device id (ms-2-bytes major, ls-2-bytes minor), 4byte inode number
+ * NOTE: we cannot use the kdev_t device id value, because kdev_t.h
+ * says we mustn't. We must break it up and reassemble.
+ * 1 - 4 byte user specified identifier
+ * 2 - 4 byte major, 4 byte minor, 4 byte inode number - DEPRECATED
+ * 3 - 4 byte device id, encoded for user-space, 4 byte inode number
+ * 4 - 4 byte inode number and 4 byte uuid
+ * 5 - 8 byte uuid
+ * 6 - 16 byte uuid
+ * 7 - 8 byte inode number and 16 byte uuid
+ *
+ * The fileid_type identified how the file within the filesystem is encoded.
+ * The values for this field are filesystem specific, exccept that
+ * filesystems must not use the values '0' or '0xff'. 'See enum fid_type'
+ * in include/linux/exportfs.h for currently registered values.
+ */
+struct nfs_fhbase_new {
+ union {
+ struct {
+ u8 fb_version_aux; /* == 1, even => nfs_fhbase_old */
+ u8 fb_auth_type_aux;
+ u8 fb_fsid_type_aux;
+ u8 fb_fileid_type_aux;
+ u32 fb_auth[1];
+ /* u32 fb_fsid[0]; floating */
+ /* u32 fb_fileid[0]; floating */
+ };
+ struct {
+ u8 fb_version; /* == 1, even => nfs_fhbase_old */
+ u8 fb_auth_type;
+ u8 fb_fsid_type;
+ u8 fb_fileid_type;
+ u32 fb_auth_flex[]; /* flexible-array member */
+ };
+ };
+};
+
+struct knfsd_fh {
+ unsigned int fh_size; /* significant for NFSv3.
+ * Points to the current size while building
+ * a new file handle
+ */
+ union {
+ struct nfs_fhbase_old fh_old;
+ u32 fh_pad[NFS4_FHSIZE/4];
+ struct nfs_fhbase_new fh_new;
+ } fh_base;
+};
+
+#define ofh_dcookie fh_base.fh_old.fb_dcookie
+#define ofh_ino fh_base.fh_old.fb_ino
+#define ofh_dirino fh_base.fh_old.fb_dirino
+#define ofh_dev fh_base.fh_old.fb_dev
+#define ofh_xdev fh_base.fh_old.fb_xdev
+#define ofh_xino fh_base.fh_old.fb_xino
+#define ofh_generation fh_base.fh_old.fb_generation
+
+#define fh_version fh_base.fh_new.fb_version
+#define fh_fsid_type fh_base.fh_new.fb_fsid_type
+#define fh_auth_type fh_base.fh_new.fb_auth_type
+#define fh_fileid_type fh_base.fh_new.fb_fileid_type
+#define fh_fsid fh_base.fh_new.fb_auth_flex
static inline __u32 ino_t_to_u32(ino_t ino)
{