/*
   * linux/fs/nfsd/nfs3proc.c
   *
   * Process version 3 NFS requests.
   *
   * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
   */
  
  #include <linux/linkage.h>
  #include <linux/time.h>
  #include <linux/errno.h>
  #include <linux/fs.h>
  #include <linux/ext2_fs.h>
  #include <linux/stat.h>
  #include <linux/fcntl.h>
  #include <linux/net.h>
  #include <linux/in.h>
  #include <linux/unistd.h>
  #include <linux/slab.h>
  #include <linux/major.h>
  
  #include <linux/sunrpc/svc.h>
  #include <linux/nfsd/nfsd.h>
  #include <linux/nfsd/cache.h>
  #include <linux/nfsd/xdr3.h>
  #include <linux/nfs3.h>
  
  #define NFSDDBG_FACILITY		NFSDDBG_PROC
  
  #define RETURN_STATUS(st)	{ resp->status = (st); return (st); }
  
  static int	nfs3_ftypes[] = {
  	0,			/* NF3NON */
  	S_IFREG,		/* NF3REG */
  	S_IFDIR,		/* NF3DIR */
  	S_IFBLK,		/* NF3BLK */
  	S_IFCHR,		/* NF3CHR */
  	S_IFLNK,		/* NF3LNK */
  	S_IFSOCK,		/* NF3SOCK */
  	S_IFIFO,		/* NF3FIFO */
  };
  
  /*
   * NULL call.
   */

  static __be32

  nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
  {
  	return nfs_ok;
  }
  
  /*
   * Get a file's attributes
   */

  static __be32

  nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle  *argp,
  					   struct nfsd3_attrstat *resp)
  {

  	int	err;
  	__be32	nfserr;

  
  	dprintk("nfsd: GETATTR(3)  %s
  ",

  		SVCFH_fmt(&argp->fh));

  
  	fh_copy(&resp->fh, &argp->fh);
  	nfserr = fh_verify(rqstp, &resp->fh, 0, MAY_NOP);

  	if (nfserr)
  		RETURN_STATUS(nfserr);
  
  	err = vfs_getattr(resp->fh.fh_export->ex_mnt,
  			  resp->fh.fh_dentry, &resp->stat);
  	nfserr = nfserrno(err);

  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Set a file's attributes
   */

  static __be32

  nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp,
  					   struct nfsd3_attrstat  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: SETATTR(3)  %s
  ",
  				SVCFH_fmt(&argp->fh));
  
  	fh_copy(&resp->fh, &argp->fh);
  	nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
  			      argp->check_guard, argp->guardtime);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Look up a path name component
   */

  static __be32

  nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
  					  struct nfsd3_diropres  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: LOOKUP(3)   %s %.*s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				argp->name);
  
  	fh_copy(&resp->dirfh, &argp->fh);
  	fh_init(&resp->fh, NFS3_FHSIZE);
  
  	nfserr = nfsd_lookup(rqstp, &resp->dirfh,
  				    argp->name,
  				    argp->len,
  				    &resp->fh);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Check file access
   */

  static __be32

  nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
  					  struct nfsd3_accessres *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: ACCESS(3)   %s 0x%x
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->access);
  
  	fh_copy(&resp->fh, &argp->fh);
  	resp->access = argp->access;
  	nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Read a symlink.
   */

  static __be32

  nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp,
  					   struct nfsd3_readlinkres *resp)
  {

  	__be32 nfserr;

  
  	dprintk("nfsd: READLINK(3) %s
  ", SVCFH_fmt(&argp->fh));
  
  	/* Read the symlink. */
  	fh_copy(&resp->fh, &argp->fh);
  	resp->len = NFS3_MAXPATHLEN;
  	nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Read a portion of a file.
   */

  static __be32

  nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp,
  				        struct nfsd3_readres  *resp)
  {

  	__be32	nfserr;

  	u32	max_blocksize = svc_max_payload(rqstp);

  
  	dprintk("nfsd: READ(3) %s %lu bytes at %lu
  ",
  				SVCFH_fmt(&argp->fh),
  				(unsigned long) argp->count,
  				(unsigned long) argp->offset);
  
  	/* Obtain buffer pointer for payload.
  	 * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
  	 * + 1 (xdr opaque byte count) = 26
  	 */
  
  	resp->count = argp->count;

  	if (max_blocksize < resp->count)
  		resp->count = max_blocksize;

  	svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);

  
  	fh_copy(&resp->fh, &argp->fh);
  	nfserr = nfsd_read(rqstp, &resp->fh, NULL,
  				  argp->offset,

  			   	  rqstp->rq_vec, argp->vlen,

  				  &resp->count);
  	if (nfserr == 0) {
  		struct inode	*inode = resp->fh.fh_dentry->d_inode;
  
  		resp->eof = (argp->offset + resp->count) >= inode->i_size;
  	}
  
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Write data to a file
   */

  static __be32

  nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
  					 struct nfsd3_writeres  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: WRITE(3)    %s %d bytes at %ld%s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				(unsigned long) argp->offset,
  				argp->stable? " stable" : "");
  
  	fh_copy(&resp->fh, &argp->fh);
  	resp->committed = argp->stable;
  	nfserr = nfsd_write(rqstp, &resp->fh, NULL,
  				   argp->offset,

  				   rqstp->rq_vec, argp->vlen,

  				   argp->len,
  				   &resp->committed);
  	resp->count = argp->count;
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * With NFSv3, CREATE processing is a lot easier than with NFSv2.
   * At least in theory; we'll see how it fares in practice when the
   * first reports about SunOS compatibility problems start to pour in...
   */

  static __be32

  nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
  					  struct nfsd3_diropres   *resp)
  {
  	svc_fh		*dirfhp, *newfhp = NULL;
  	struct iattr	*attr;

  	__be32		nfserr;

  
  	dprintk("nfsd: CREATE(3)   %s %.*s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				argp->name);
  
  	dirfhp = fh_copy(&resp->dirfh, &argp->fh);
  	newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
  	attr   = &argp->attrs;
  
  	/* Get the directory inode */
  	nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, MAY_CREATE);
  	if (nfserr)
  		RETURN_STATUS(nfserr);
  
  	/* Unfudge the mode bits */
  	attr->ia_mode &= ~S_IFMT;
  	if (!(attr->ia_valid & ATTR_MODE)) { 
  		attr->ia_valid |= ATTR_MODE;
  		attr->ia_mode = S_IFREG;
  	} else {
  		attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
  	}
  
  	/* Now create the file and set attributes */
  	nfserr = nfsd_create_v3(rqstp, dirfhp, argp->name, argp->len,
  				attr, newfhp,

  				argp->createmode, argp->verf, NULL, NULL);

  
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Make directory. This operation is not idempotent.
   */

  static __be32

  nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
  					 struct nfsd3_diropres   *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: MKDIR(3)    %s %.*s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				argp->name);
  
  	argp->attrs.ia_valid &= ~ATTR_SIZE;
  	fh_copy(&resp->dirfh, &argp->fh);
  	fh_init(&resp->fh, NFS3_FHSIZE);
  	nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
  				    &argp->attrs, S_IFDIR, 0, &resp->fh);
  
  	RETURN_STATUS(nfserr);
  }

  static __be32

  nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp,
  					   struct nfsd3_diropres    *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: SYMLINK(3)  %s %.*s -> %.*s
  ",
  				SVCFH_fmt(&argp->ffh),
  				argp->flen, argp->fname,
  				argp->tlen, argp->tname);
  
  	fh_copy(&resp->dirfh, &argp->ffh);
  	fh_init(&resp->fh, NFS3_FHSIZE);
  	nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
  						   argp->tname, argp->tlen,
  						   &resp->fh, &argp->attrs);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Make socket/fifo/device.
   */

  static __be32

  nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
  					 struct nfsd3_diropres  *resp)
  {

  	__be32	nfserr;
  	int type;

  	dev_t	rdev = 0;
  
  	dprintk("nfsd: MKNOD(3)    %s %.*s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				argp->name);
  
  	fh_copy(&resp->dirfh, &argp->fh);
  	fh_init(&resp->fh, NFS3_FHSIZE);
  
  	if (argp->ftype == 0 || argp->ftype >= NF3BAD)
  		RETURN_STATUS(nfserr_inval);
  	if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
  		rdev = MKDEV(argp->major, argp->minor);
  		if (MAJOR(rdev) != argp->major ||
  		    MINOR(rdev) != argp->minor)
  			RETURN_STATUS(nfserr_inval);
  	} else
  		if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
  			RETURN_STATUS(nfserr_inval);
  
  	type = nfs3_ftypes[argp->ftype];
  	nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
  				    &argp->attrs, type, rdev, &resp->fh);
  
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Remove file/fifo/socket etc.
   */

  static __be32

  nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
  					  struct nfsd3_attrstat  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: REMOVE(3)   %s %.*s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				argp->name);
  
  	/* Unlink. -S_IFDIR means file must not be a directory */
  	fh_copy(&resp->fh, &argp->fh);
  	nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Remove a directory
   */

  static __be32

  nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
  					 struct nfsd3_attrstat  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: RMDIR(3)    %s %.*s
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->len,
  				argp->name);
  
  	fh_copy(&resp->fh, &argp->fh);
  	nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
  	RETURN_STATUS(nfserr);
  }

  static __be32

  nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp,
  					  struct nfsd3_renameres  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: RENAME(3)   %s %.*s ->
  ",
  				SVCFH_fmt(&argp->ffh),
  				argp->flen,
  				argp->fname);
  	dprintk("nfsd: -> %s %.*s
  ",
  				SVCFH_fmt(&argp->tfh),
  				argp->tlen,
  				argp->tname);
  
  	fh_copy(&resp->ffh, &argp->ffh);
  	fh_copy(&resp->tfh, &argp->tfh);
  	nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
  				    &resp->tfh, argp->tname, argp->tlen);
  	RETURN_STATUS(nfserr);
  }

  static __be32

  nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp,
  					struct nfsd3_linkres  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: LINK(3)     %s ->
  ",
  				SVCFH_fmt(&argp->ffh));
  	dprintk("nfsd:   -> %s %.*s
  ",
  				SVCFH_fmt(&argp->tfh),
  				argp->tlen,
  				argp->tname);
  
  	fh_copy(&resp->fh,  &argp->ffh);
  	fh_copy(&resp->tfh, &argp->tfh);
  	nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
  				  &resp->fh);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Read a portion of a directory.
   */

  static __be32

  nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
  					   struct nfsd3_readdirres  *resp)
  {

  	__be32		nfserr;
  	int		count;

  
  	dprintk("nfsd: READDIR(3)  %s %d bytes at %d
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->count, (u32) argp->cookie);
  
  	/* Make sure we've room for the NULL ptr & eof flag, and shrink to
  	 * client read size */
  	count = (argp->count >> 2) - 2;
  
  	/* Read directory and encode entries on the fly */
  	fh_copy(&resp->fh, &argp->fh);
  
  	resp->buflen = count;
  	resp->common.err = nfs_ok;
  	resp->buffer = argp->buffer;
  	resp->rqstp = rqstp;
  	nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie, 
  					&resp->common, nfs3svc_encode_entry);
  	memcpy(resp->verf, argp->verf, 8);
  	resp->count = resp->buffer - argp->buffer;
  	if (resp->offset)
  		xdr_encode_hyper(resp->offset, argp->cookie);
  
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Read a portion of a directory, including file handles and attrs.
   * For now, we choose to ignore the dircount parameter.
   */

  static __be32

  nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
  					       struct nfsd3_readdirres  *resp)
  {

  	__be32	nfserr;
  	int	count = 0;

  	loff_t	offset;
  	int	i;
  	caddr_t	page_addr = NULL;
  
  	dprintk("nfsd: READDIR+(3) %s %d bytes at %d
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->count, (u32) argp->cookie);
  
  	/* Convert byte count to number of words (i.e. >> 2),
  	 * and reserve room for the NULL ptr & eof flag (-2 words) */
  	resp->count = (argp->count >> 2) - 2;
  
  	/* Read directory and encode entries on the fly */
  	fh_copy(&resp->fh, &argp->fh);
  
  	resp->common.err = nfs_ok;
  	resp->buffer = argp->buffer;
  	resp->buflen = resp->count;
  	resp->rqstp = rqstp;
  	offset = argp->cookie;
  	nfserr = nfsd_readdir(rqstp, &resp->fh,
  				     &offset,
  				     &resp->common,
  				     nfs3svc_encode_entry_plus);
  	memcpy(resp->verf, argp->verf, 8);
  	for (i=1; i<rqstp->rq_resused ; i++) {
  		page_addr = page_address(rqstp->rq_respages[i]);
  
  		if (((caddr_t)resp->buffer >= page_addr) &&
  		    ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
  			count += (caddr_t)resp->buffer - page_addr;
  			break;
  		}
  		count += PAGE_SIZE;
  	}
  	resp->count = count >> 2;
  	if (resp->offset) {
  		if (unlikely(resp->offset1)) {
  			/* we ended up with offset on a page boundary */
  			*resp->offset = htonl(offset >> 32);
  			*resp->offset1 = htonl(offset & 0xffffffff);
  			resp->offset1 = NULL;
  		} else {
  			xdr_encode_hyper(resp->offset, offset);
  		}
  	}
  
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Get file system stats
   */

  static __be32

  nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
  					   struct nfsd3_fsstatres *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: FSSTAT(3)   %s
  ",
  				SVCFH_fmt(&argp->fh));
  
  	nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats);
  	fh_put(&argp->fh);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Get file system info
   */

  static __be32

  nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
  					   struct nfsd3_fsinfores *resp)
  {

  	__be32	nfserr;

  	u32	max_blocksize = svc_max_payload(rqstp);

  
  	dprintk("nfsd: FSINFO(3)   %s
  ",
  				SVCFH_fmt(&argp->fh));

  	resp->f_rtmax  = max_blocksize;
  	resp->f_rtpref = max_blocksize;

  	resp->f_rtmult = PAGE_SIZE;

  	resp->f_wtmax  = max_blocksize;
  	resp->f_wtpref = max_blocksize;

  	resp->f_wtmult = PAGE_SIZE;
  	resp->f_dtpref = PAGE_SIZE;
  	resp->f_maxfilesize = ~(u32) 0;
  	resp->f_properties = NFS3_FSF_DEFAULT;
  
  	nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
  
  	/* Check special features of the file system. May request
  	 * different read/write sizes for file systems known to have
  	 * problems with large blocks */
  	if (nfserr == 0) {
  		struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
  
  		/* Note that we don't care for remote fs's here */
  		if (sb->s_magic == 0x4d44 /* MSDOS_SUPER_MAGIC */) {
  			resp->f_properties = NFS3_FSF_BILLYBOY;
  		}
  		resp->f_maxfilesize = sb->s_maxbytes;
  	}
  
  	fh_put(&argp->fh);
  	RETURN_STATUS(nfserr);
  }
  
  /*
   * Get pathconf info for the specified file
   */

  static __be32

  nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle      *argp,
  					     struct nfsd3_pathconfres *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: PATHCONF(3) %s
  ",
  				SVCFH_fmt(&argp->fh));
  
  	/* Set default pathconf */
  	resp->p_link_max = 255;		/* at least */
  	resp->p_name_max = 255;		/* at least */
  	resp->p_no_trunc = 0;
  	resp->p_chown_restricted = 1;
  	resp->p_case_insensitive = 0;
  	resp->p_case_preserving = 1;
  
  	nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
  
  	if (nfserr == 0) {
  		struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
  
  		/* Note that we don't care for remote fs's here */
  		switch (sb->s_magic) {
  		case EXT2_SUPER_MAGIC:
  			resp->p_link_max = EXT2_LINK_MAX;
  			resp->p_name_max = EXT2_NAME_LEN;
  			break;
  		case 0x4d44:	/* MSDOS_SUPER_MAGIC */
  			resp->p_case_insensitive = 1;
  			resp->p_case_preserving  = 0;
  			break;
  		}
  	}
  
  	fh_put(&argp->fh);
  	RETURN_STATUS(nfserr);
  }
  
  
  /*
   * Commit a file (range) to stable storage.
   */

  static __be32

  nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
  					   struct nfsd3_commitres  *resp)
  {

  	__be32	nfserr;

  
  	dprintk("nfsd: COMMIT(3)   %s %u@%Lu
  ",
  				SVCFH_fmt(&argp->fh),
  				argp->count,
  				(unsigned long long) argp->offset);
  
  	if (argp->offset > NFS_OFFSET_MAX)
  		RETURN_STATUS(nfserr_inval);
  
  	fh_copy(&resp->fh, &argp->fh);
  	nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
  
  	RETURN_STATUS(nfserr);
  }
  
  
  /*
   * NFSv3 Server procedures.
   * Only the results of non-idempotent operations are cached.
   */
  #define nfs3svc_decode_voidargs		NULL
  #define nfs3svc_release_void		NULL
  #define nfs3svc_decode_fhandleargs	nfs3svc_decode_fhandle
  #define nfs3svc_encode_attrstatres	nfs3svc_encode_attrstat
  #define nfs3svc_encode_wccstatres	nfs3svc_encode_wccstat
  #define nfsd3_mkdirargs			nfsd3_createargs
  #define nfsd3_readdirplusargs		nfsd3_readdirargs
  #define nfsd3_fhandleargs		nfsd_fhandle
  #define nfsd3_fhandleres		nfsd3_attrstat
  #define nfsd3_attrstatres		nfsd3_attrstat
  #define nfsd3_wccstatres		nfsd3_attrstat
  #define nfsd3_createres			nfsd3_diropres
  #define nfsd3_voidres			nfsd3_voidargs
  struct nfsd3_voidargs { int dummy; };
  
  #define PROC(name, argt, rest, relt, cache, respsize)	\
   { (svc_procfunc) nfsd3_proc_##name,		\
     (kxdrproc_t) nfs3svc_decode_##argt##args,	\
     (kxdrproc_t) nfs3svc_encode_##rest##res,	\
     (kxdrproc_t) nfs3svc_release_##relt,		\
     sizeof(struct nfsd3_##argt##args),		\
     sizeof(struct nfsd3_##rest##res),		\
     0,						\
     cache,					\
     respsize,					\
   }
  
  #define ST 1		/* status*/
  #define FH 17		/* filehandle with length */
  #define AT 21		/* attributes */
  #define pAT (1+AT)	/* post attributes - conditional */
  #define WC (7+pAT)	/* WCC attributes */
  
  static struct svc_procedure		nfsd_procedures3[22] = {
    PROC(null,	 void,		void,		void,	  RC_NOCACHE, ST),
    PROC(getattr,	 fhandle,	attrstat,	fhandle,  RC_NOCACHE, ST+AT),
    PROC(setattr,  sattr,		wccstat,	fhandle,  RC_REPLBUFF, ST+WC),
    PROC(lookup,	 dirop,		dirop,		fhandle2, RC_NOCACHE, ST+FH+pAT+pAT),
    PROC(access,	 access,	access,		fhandle,  RC_NOCACHE, ST+pAT+1),
    PROC(readlink, readlink,	readlink,	fhandle,  RC_NOCACHE, ST+pAT+1+NFS3_MAXPATHLEN/4),

    PROC(read,	 read,		read,		fhandle,  RC_NOCACHE, ST+pAT+4+NFSSVC_MAXBLKSIZE/4),

    PROC(write,	 write,		write,		fhandle,  RC_REPLBUFF, ST+WC+4),
    PROC(create,	 create,	create,		fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
    PROC(mkdir,	 mkdir,		create,		fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
    PROC(symlink,	 symlink,	create,		fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
    PROC(mknod,	 mknod,		create,		fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
    PROC(remove,	 dirop,		wccstat,	fhandle,  RC_REPLBUFF, ST+WC),
    PROC(rmdir,	 dirop,		wccstat,	fhandle,  RC_REPLBUFF, ST+WC),
    PROC(rename,	 rename,	rename,		fhandle2, RC_REPLBUFF, ST+WC+WC),
    PROC(link,	 link,		link,		fhandle2, RC_REPLBUFF, ST+pAT+WC),
    PROC(readdir,	 readdir,	readdir,	fhandle,  RC_NOCACHE, 0),
    PROC(readdirplus,readdirplus,	readdir,	fhandle,  RC_NOCACHE, 0),
    PROC(fsstat,	 fhandle,	fsstat,		void,     RC_NOCACHE, ST+pAT+2*6+1),
    PROC(fsinfo,   fhandle,	fsinfo,		void,     RC_NOCACHE, ST+pAT+12),
    PROC(pathconf, fhandle,	pathconf,	void,     RC_NOCACHE, ST+pAT+6),
    PROC(commit,	 commit,	commit,		fhandle,  RC_NOCACHE, ST+WC+2),
  };
  
  struct svc_version	nfsd_version3 = {
  		.vs_vers	= 3,
  		.vs_nproc	= 22,
  		.vs_proc	= nfsd_procedures3,
  		.vs_dispatch	= nfsd_dispatch,
  		.vs_xdrsize	= NFS3_SVC_XDRSIZE,
  };