[PATCH] A basic NFSv4 client for 2.5.x

Instantiate a new file, include/linux/nfs4.h, which contains
constants and typedef's for the NFSv4 protocol (by analogy with
include/linux/nfs2.h and include/linux/nfs3.h).

Also #include this file in a few places where it will be needed
later.

fs/nfs/pagelist.c

@@ -14,6 +14,7 @@
 #include <linux/file.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/nfs3.h>
+#include <linux/nfs4.h>
 #include <linux/nfs_page.h>
 #include <linux/nfs_fs.h>
 #include <linux/nfs_flushd.h>

include/linux/nfs4.h

+/*
+ *  include/linux/nfs4.h
+ *
+ *  NFSv4 protocol definitions.
+ *
+ *  Copyright (c) 2002 The Regents of the University of Michigan.
+ *  All rights reserved.
+ *
+ *  Kendrick Smith <kmsmith@umich.edu>
+ *  Andy Adamson   <andros@umich.edu>
+ */
+
+#ifndef _LINUX_NFS4_H
+#define _LINUX_NFS4_H
+
+#define NFS4_VERIFIER_SIZE	8
+#define NFS4_FHSIZE		128
+#define NFS4_MAXNAMLEN		NAME_MAX
+
+#define NFS4_ACCESS_READ        0x0001
+#define NFS4_ACCESS_LOOKUP      0x0002
+#define NFS4_ACCESS_MODIFY      0x0004
+#define NFS4_ACCESS_EXTEND      0x0008
+#define NFS4_ACCESS_DELETE      0x0010
+#define NFS4_ACCESS_EXECUTE     0x0020
+
+#define NFS4_FH_PERISTENT		0x0000
+#define NFS4_FH_NOEXPIRE_WITH_OPEN	0x0001
+#define NFS4_FH_VOLATILE_ANY		0x0002
+#define NFS4_FH_VOL_MIGRATION		0x0004
+#define NFS4_FH_VOL_RENAME		0x0008
+
+#define NFS4_OPEN_RESULT_CONFIRM 0x0002
+
+#define NFS4_SHARE_ACCESS_READ	0x0001
+#define NFS4_SHARE_ACCESS_WRITE	0x0002
+#define NFS4_SHARE_ACCESS_BOTH	0x0003
+
+#define NFS4_SET_TO_SERVER_TIME	0
+#define NFS4_SET_TO_CLIENT_TIME	1
+
+#define NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE 0
+#define NFS4_ACE_ACCESS_DENIED_ACE_TYPE  1
+#define NFS4_ACE_SYSTEM_AUDIT_ACE_TYPE   2
+#define NFS4_ACE_SYSTEM_ALARM_ACE_TYPE   3
+
+typedef char nfs4_verifier[NFS4_VERIFIER_SIZE];
+typedef char nfs4_stateid[16];
+
+enum nfs_opnum4 {
+	OP_ACCESS = 3,
+	OP_CLOSE = 4,
+	OP_COMMIT = 5,
+	OP_CREATE = 6,
+	OP_DELEGPURGE = 7,
+	OP_DELEGRETURN = 8,
+	OP_GETATTR = 9,
+	OP_GETFH = 10,
+	OP_LINK = 11,
+	OP_LOCK = 12,
+	OP_LOCKT = 13,
+	OP_LOCKU = 14,
+	OP_LOOKUP = 15,
+	OP_LOOKUPP = 16,
+	OP_NVERIFY = 17,
+	OP_OPEN = 18,
+	OP_OPENATTR = 19,
+	OP_OPEN_CONFIRM = 20,
+	OP_OPEN_DOWNGRADE = 21,
+	OP_PUTFH = 22,
+	OP_PUTPUBFH = 23,
+	OP_PUTROOTFH = 24,
+	OP_READ = 25,
+	OP_READDIR = 26,
+	OP_READLINK = 27,
+	OP_REMOVE = 28,
+	OP_RENAME = 29,
+	OP_RENEW = 30,
+	OP_RESTOREFH = 31,
+	OP_SAVEFH = 32,
+	OP_SECINFO = 33,
+	OP_SETATTR = 34,
+	OP_SETCLIENTID = 35,
+	OP_SETCLIENTID_CONFIRM = 36,
+	OP_VERIFY = 37,
+	OP_WRITE = 38,
+};
+
+/*
+ * Note: NF4BAD is not actually part of the protocol; it is just used
+ * internally by nfsd.
+ */
+enum nfs_ftype4 {
+	NF4BAD		= 0,
+        NF4REG          = 1,    /* Regular File */
+        NF4DIR          = 2,    /* Directory */
+        NF4BLK          = 3,    /* Special File - block device */
+        NF4CHR          = 4,    /* Special File - character device */
+        NF4LNK          = 5,    /* Symbolic Link */
+        NF4SOCK         = 6,    /* Special File - socket */
+        NF4FIFO         = 7,    /* Special File - fifo */
+        NF4ATTRDIR      = 8,    /* Attribute Directory */
+        NF4NAMEDATTR    = 9     /* Named Attribute */
+};
+
+enum open_claim_type4 {
+	NFS4_OPEN_CLAIM_NULL = 0,
+	NFS4_OPEN_CLAIM_PREVIOUS = 1,
+	NFS4_OPEN_CLAIM_DELEGATE_CUR = 2,
+	NFS4_OPEN_CLAIM_DELEGATE_PREV = 3
+};
+
+enum opentype4 {
+	NFS4_OPEN_NOCREATE = 0,
+	NFS4_OPEN_CREATE = 1
+};
+
+enum createmode4 {
+	NFS4_CREATE_UNCHECKED = 0,
+	NFS4_CREATE_GUARDED = 1,
+	NFS4_CREATE_EXCLUSIVE = 2
+};
+
+enum limit_by4 {
+	NFS4_LIMIT_SIZE = 1,
+	NFS4_LIMIT_BLOCKS = 2
+};
+
+enum open_delegation_type4 {
+	NFS4_OPEN_DELEGATE_NONE = 0,
+	NFS4_OPEN_DELEGATE_READ = 1,
+	NFS4_OPEN_DELEGATE_WRITE = 2
+};
+
+/* Mandatory Attributes */
+#define FATTR4_WORD0_SUPPORTED_ATTRS    (1)
+#define FATTR4_WORD0_TYPE               (1 << 1)
+#define FATTR4_WORD0_FH_EXPIRE_TYPE     (1 << 2)
+#define FATTR4_WORD0_CHANGE             (1 << 3)
+#define FATTR4_WORD0_SIZE               (1 << 4)
+#define FATTR4_WORD0_LINK_SUPPORT       (1 << 5)
+#define FATTR4_WORD0_SYMLINK_SUPPORT    (1 << 6)
+#define FATTR4_WORD0_NAMED_ATTR         (1 << 7)
+#define FATTR4_WORD0_FSID               (1 << 8)
+#define FATTR4_WORD0_UNIQUE_HANDLES     (1 << 9)
+#define FATTR4_WORD0_LEASE_TIME         (1 << 10)
+#define FATTR4_WORD0_RDATTR_ERROR       (1 << 11)
+
+/* Recommended Attributes */
+#define FATTR4_WORD0_ACL                (1 << 12)
+#define FATTR4_WORD0_ACLSUPPORT         (1 << 13)
+#define FATTR4_WORD0_ARCHIVE            (1 << 14)
+#define FATTR4_WORD0_CANSETTIME         (1 << 15)
+#define FATTR4_WORD0_CASE_INSENSITIVE   (1 << 16)
+#define FATTR4_WORD0_CASE_PRESERVING    (1 << 17)
+#define FATTR4_WORD0_CHOWN_RESTRICTED   (1 << 18)
+#define FATTR4_WORD0_FILEHANDLE         (1 << 19)
+#define FATTR4_WORD0_FILEID             (1 << 20)
+#define FATTR4_WORD0_FILES_AVAIL        (1 << 21)
+#define FATTR4_WORD0_FILES_FREE         (1 << 22)
+#define FATTR4_WORD0_FILES_TOTAL        (1 << 23)
+#define FATTR4_WORD0_FS_LOCATIONS       (1 << 24)
+#define FATTR4_WORD0_HIDDEN             (1 << 25)
+#define FATTR4_WORD0_HOMOGENEOUS        (1 << 26)
+#define FATTR4_WORD0_MAXFILESIZE        (1 << 27)
+#define FATTR4_WORD0_MAXLINK            (1 << 28)
+#define FATTR4_WORD0_MAXNAME            (1 << 29)
+#define FATTR4_WORD0_MAXREAD            (1 << 30)
+#define FATTR4_WORD0_MAXWRITE           (1 << 31)
+#define FATTR4_WORD1_MIMETYPE           (1)
+#define FATTR4_WORD1_MODE               (1 << 1)
+#define FATTR4_WORD1_NO_TRUNC           (1 << 2)
+#define FATTR4_WORD1_NUMLINKS           (1 << 3)
+#define FATTR4_WORD1_OWNER              (1 << 4)
+#define FATTR4_WORD1_OWNER_GROUP        (1 << 5)
+#define FATTR4_WORD1_QUOTA_HARD         (1 << 6)
+#define FATTR4_WORD1_QUOTA_SOFT         (1 << 7)
+#define FATTR4_WORD1_QUOTA_USED         (1 << 8)
+#define FATTR4_WORD1_RAWDEV             (1 << 9)
+#define FATTR4_WORD1_SPACE_AVAIL        (1 << 10)
+#define FATTR4_WORD1_SPACE_FREE         (1 << 11)
+#define FATTR4_WORD1_SPACE_TOTAL        (1 << 12)
+#define FATTR4_WORD1_SPACE_USED         (1 << 13)
+#define FATTR4_WORD1_SYSTEM             (1 << 14)
+#define FATTR4_WORD1_TIME_ACCESS        (1 << 15)
+#define FATTR4_WORD1_TIME_ACCESS_SET    (1 << 16)
+#define FATTR4_WORD1_TIME_BACKUP        (1 << 17)
+#define FATTR4_WORD1_TIME_CREATE        (1 << 18)
+#define FATTR4_WORD1_TIME_DELTA         (1 << 19)
+#define FATTR4_WORD1_TIME_METADATA      (1 << 20)
+#define FATTR4_WORD1_TIME_MODIFY        (1 << 21)
+#define FATTR4_WORD1_TIME_MODIFY_SET    (1 << 22)
+
+#define NFSPROC4_NULL 0
+#define NFSPROC4_COMPOUND 1
+#define NFS4_MINOR_VERSION 0
+#define NFS4_DEBUG 1
+
+#endif
+
+/*
+ * Local variables:
+ *  c-basic-offset: 8
+ * End:
+ */

include/linux/nfs_fs.h

@@ -25,6 +25,7 @@
 #include <linux/nfs.h>
 #include <linux/nfs2.h>
 #include <linux/nfs3.h>
+#include <linux/nfs4.h>
 #include <linux/nfs_page.h>
 #include <linux/nfs_xdr.h>
 

include/linux/nfsd/const.h

@@ -12,6 +12,7 @@
 #include <linux/nfs.h>
 #include <linux/nfs2.h>
 #include <linux/nfs3.h>
+#include <linux/nfs4.h>
 
 /*
  * Maximum protocol version supported by knfsd