 @@ -1,604 +1,604 @@
-/*	$NetBSD: puffs_msgif.h,v 1.65.20.1 2009/10/18 12:46:07 sborrill Exp $	*/
+/*	$NetBSD: puffs_msgif.h,v 1.65.20.2 2009/12/14 19:36:57 sborrill Exp $	*/
 /*
  * Copyright (c) 2005, 2006, 2007  Antti Kantee.  All Rights Reserved.
+ *
  * Development of this software was supported by the
  * Google Summer of Code program and the Ulla Tuominen Foundation.
  * The Google SoC project was mentored by Bill Studenmund.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 #ifndef _FS_PUFFS_PUFFS_MSGIF_H_
 #define _FS_PUFFS_PUFFS_MSGIF_H_
 #include <sys/param.h>
 #include <sys/time.h>
 #include <sys/ioccom.h>
 #include <sys/uio.h>
 #include <sys/vnode.h>
 #include <sys/ucred.h>
 #include <sys/statvfs.h>
 #include <sys/dirent.h>
 #include <sys/fcntl.h>
 #include <dev/putter/putter.h>
 #include <uvm/uvm_prot.h>
 #define PUFFSOP_VFS		0x01	/* kernel-> */
 #define PUFFSOP_VN		0x02	/* kernel-> */
 #define PUFFSOP_CACHE		0x03	/* only kernel-> */
 #define PUFFSOP_ERROR		0x04	/* only kernel-> */
 #define PUFFSOP_FLUSH		0x05	/* ->kernel */
 #define PUFFSOP_SUSPEND		0x06	/* ->kernel */
 #define PUFFSOPFLAG_FAF		0x10	/* fire-and-forget */
 #define PUFFSOPFLAG_ISRESPONSE	0x20	/* req is actually a resp */
 #define PUFFSOP_OPCMASK		0x07
 #define PUFFSOP_OPCLASS(a)	((a) & PUFFSOP_OPCMASK)
 #define PUFFSOP_WANTREPLY(a)	(((a) & PUFFSOPFLAG_FAF) == 0)
 /* XXX: we don't need everything */
 enum {
 	PUFFS_VFS_MOUNT,	PUFFS_VFS_START,	PUFFS_VFS_UNMOUNT,
 	PUFFS_VFS_ROOT,		PUFFS_VFS_STATVFS,	PUFFS_VFS_SYNC,
 	PUFFS_VFS_VGET,		PUFFS_VFS_FHTOVP,	PUFFS_VFS_VPTOFH,
 	PUFFS_VFS_INIT,		PUFFS_VFS_DONE,		PUFFS_VFS_SNAPSHOT,
 	PUFFS_VFS_EXTATTCTL,	PUFFS_VFS_SUSPEND
 };
 #define PUFFS_VFS_MAX PUFFS_VFS_EXTATTCTL
 /* moreXXX: we don't need everything here either */
 enum {
 	PUFFS_VN_LOOKUP,	PUFFS_VN_CREATE,	PUFFS_VN_MKNOD,
 	PUFFS_VN_OPEN,		PUFFS_VN_CLOSE,		PUFFS_VN_ACCESS,
 	PUFFS_VN_GETATTR,	PUFFS_VN_SETATTR,	PUFFS_VN_READ,
 	PUFFS_VN_WRITE,		PUFFS_VN_IOCTL,		PUFFS_VN_FCNTL,
 	PUFFS_VN_POLL,		PUFFS_VN_KQFILTER,	PUFFS_VN_REVOKE,
 	PUFFS_VN_MMAP,		PUFFS_VN_FSYNC,		PUFFS_VN_SEEK,
 	PUFFS_VN_REMOVE,	PUFFS_VN_LINK,		PUFFS_VN_RENAME,
 	PUFFS_VN_MKDIR,		PUFFS_VN_RMDIR,		PUFFS_VN_SYMLINK,
 	PUFFS_VN_READDIR,	PUFFS_VN_READLINK,	PUFFS_VN_ABORTOP,
 	PUFFS_VN_INACTIVE,	PUFFS_VN_RECLAIM,	PUFFS_VN_LOCK,
 	PUFFS_VN_UNLOCK,	PUFFS_VN_BMAP,		PUFFS_VN_STRATEGY,
 	PUFFS_VN_PRINT,		PUFFS_VN_ISLOCKED,	PUFFS_VN_PATHCONF,
 	PUFFS_VN_ADVLOCK,	PUFFS_VN_LEASE,		PUFFS_VN_WHITEOUT,
 	PUFFS_VN_GETPAGES,	PUFFS_VN_PUTPAGES,	PUFFS_VN_GETEXTATTR,
 	PUFFS_VN_LISTEXTATTR,	PUFFS_VN_OPENEXTATTR,	PUFFS_VN_DELETEEXTATTR,
 	PUFFS_VN_SETEXTATTR
 };
 #define PUFFS_VN_MAX PUFFS_VN_SETEXTATTR
 /*
  * These signal invalid parameters the file system returned.
  */
 enum {
 	PUFFS_ERR_MAKENODE,	PUFFS_ERR_LOOKUP,	PUFFS_ERR_READDIR,
 	PUFFS_ERR_READLINK,	PUFFS_ERR_READ,		PUFFS_ERR_WRITE,
 	PUFFS_ERR_VPTOFH,	PUFFS_ERR_ERROR
 };
 #define PUFFS_ERR_MAX PUFFS_ERR_VPTOFH
 #define PUFFSDEVELVERS	0x80000000
-#define PUFFSVERSION	28
+#define PUFFSVERSION	26
 #define PUFFSNAMESIZE	32
 #define PUFFS_TYPEPREFIX "puffs|"
 #define PUFFS_TYPELEN (_VFS_NAMELEN - (sizeof(PUFFS_TYPEPREFIX)+1))
 #define PUFFS_NAMELEN (_VFS_MNAMELEN-1)
 /*
  * Just a weak typedef for code clarity.  Additionally, we have a
  * more appropriate vanity type for puffs:
  * <uep> it should be croissant, not cookie.
  */
 typedef void *puffs_cookie_t;
 typedef puffs_cookie_t puffs_croissant_t;
 struct puffs_kargs {
 	unsigned int	pa_vers;
 	int		pa_fd;
 	uint32_t	pa_flags;
 	size_t		pa_maxmsglen;
 	int		pa_nhashbuckets;
 	size_t		pa_fhsize;
 	int		pa_fhflags;
 	puffs_cookie_t	pa_root_cookie;
 	enum vtype	pa_root_vtype;
 	voff_t		pa_root_vsize;
 	dev_t		pa_root_rdev;
 	struct statvfs	pa_svfsb;
 	char		pa_typename[_VFS_NAMELEN];
 	char		pa_mntfromname[_VFS_MNAMELEN];
 	uint8_t		pa_vnopmask[PUFFS_VN_MAX];
 };
 #define PUFFS_KFLAG_NOCACHE_NAME	0x01	/* don't use name cache     */
 #define PUFFS_KFLAG_NOCACHE_PAGE	0x02	/* don't use page cache	    */
 #define PUFFS_KFLAG_NOCACHE		0x03	/* no cache whatsoever      */
 #define PUFFS_KFLAG_ALLOPS		0x04	/* ignore pa_vnopmask       */
 #define PUFFS_KFLAG_WTCACHE		0x08	/* write-through page cache */
 #define PUFFS_KFLAG_IAONDEMAND		0x10	/* inactive only on demand  */
 #define PUFFS_KFLAG_LOOKUP_FULLPNBUF	0x20	/* full pnbuf in lookup     */
 #define PUFFS_KFLAG_MASK		0x3f
 #define PUFFS_FHFLAG_DYNAMIC		0x01
 #define PUFFS_FHFLAG_NFSV2		0x02
 #define PUFFS_FHFLAG_NFSV3		0x04
 #define PUFFS_FHFLAG_PROTOMASK		0x06
 #define PUFFS_FHFLAG_PASSTHROUGH	0x08
 #define PUFFS_FHFLAG_MASK		0x0f
 #define PUFFS_FHSIZE_MAX	1020	/* XXX: FHANDLE_SIZE_MAX - 4 */
 struct puffs_req {
 	struct putter_hdr	preq_pth;
 	uint64_t		preq_id;
 	puffs_cookie_t		preq_cookie;
 	uint16_t		preq_opclass;
 	uint16_t		preq_optype;
 	int			preq_rv;
 	uint32_t		preq_setbacks;
 	/* Who is making the call?  Eventually host id is also needed. */
 	pid_t			preq_pid;
 	lwpid_t			preq_lid;
 	/*
 	 * the following helper pads the struct size to md alignment
 	 * multiple (should size_t not cut it).  it makes sure that
 	 * whatever comes after this struct is aligned
 	 */
 	size_t  		preq_buflen;
 	uint8_t	preq_buf[0] __aligned(ALIGNBYTES+1);
 };
 #define PUFFS_SETBACK_INACT_N1	0x01	/* set VOP_INACTIVE for node 1 */
 #define PUFFS_SETBACK_INACT_N2	0x02	/* set VOP_INACTIVE for node 2 */
 #define PUFFS_SETBACK_NOREF_N1	0x04	/* set pn PN_NOREFS for node 1 */
 #define PUFFS_SETBACK_NOREF_N2	0x08	/* set pn PN_NOREFS for node 2 */
 #define PUFFS_SETBACK_MASK	0x0f
 /*
  * Flush operation.  This can be used to invalidate:
  * 1) name cache for one node
  * 2) name cache for all children
  * 3) name cache for the entire mount
  * 4) page cache for a set of ranges in one node
  * 5) page cache for one entire node
+ *
  * It can be used to flush:
  * 1) page cache for a set of ranges in one node
  * 2) page cache for one entire node
  */
 /* XXX: needs restructuring */
 struct puffs_flush {
 	struct puffs_req	pf_req;
 	puffs_cookie_t		pf_cookie;
 	int			pf_op;
 	off_t			pf_start;
 	off_t			pf_end;
 };
 #define PUFFS_INVAL_NAMECACHE_NODE		0
 #define PUFFS_INVAL_NAMECACHE_DIR		1
 #define PUFFS_INVAL_NAMECACHE_ALL		2
 #define PUFFS_INVAL_PAGECACHE_NODE_RANGE	3
 #define PUFFS_FLUSH_PAGECACHE_NODE_RANGE	4
 /* keep this for now */
 #define PUFFSREQSIZEOP		_IOR ('p', 1, size_t)
 /*
  * Credentials for an operation.  Can be either struct uucred for
  * ops called from a credential context or NOCRED/FSCRED for ops
  * called from within the kernel.  It is up to the implementation
  * if it makes a difference between these two and the super-user.
  */
 struct puffs_kcred {
 	struct uucred	pkcr_uuc;
 	uint8_t		pkcr_type;
 	uint8_t		pkcr_internal;
 };
 #define PUFFCRED_TYPE_UUC	1
 #define PUFFCRED_TYPE_INTERNAL	2
 #define PUFFCRED_CRED_NOCRED	1
 #define PUFFCRED_CRED_FSCRED	2
 /*
  * 2*MAXPHYS is the max size the system will attempt to copy,
  * else treated as garbage
  */
 #define PUFFS_MSG_MAXSIZE	2*MAXPHYS
 #define PUFFS_MSGSTRUCT_MAX	4096 /* XXX: approxkludge */
 #define PUFFS_TOMOVE(a,b) (MIN((a), b->pmp_msg_maxsize - PUFFS_MSGSTRUCT_MAX))
 /* puffs struct componentname built by kernel */
 struct puffs_kcn {
 	/* args */
 	uint32_t		pkcn_nameiop;	/* namei operation	*/
 	uint32_t		pkcn_flags;	/* flags		*/
 	char pkcn_name[MAXPATHLEN];	/* nulterminated path component */
 	size_t pkcn_namelen;		/* current component length	*/
 	size_t pkcn_consume;		/* IN: extra chars server ate   */
 };
 /*
  * Next come the individual requests.  They are all subclassed from
  * puffs_req and contain request-specific fields in addition.  Note
  * that there are some requests which have to handle arbitrary-length
  * buffers.
+ *
  * The division is the following: puffs_req is to be touched only
  * by generic routines while the other stuff is supposed to be
  * modified only by specific routines.
  */
 /*
  * aux structures for vfs operations.
  */
 struct puffs_vfsmsg_unmount {
 	struct puffs_req	pvfsr_pr;
 	int			pvfsr_flags;
 };
 struct puffs_vfsmsg_statvfs {
 	struct puffs_req	pvfsr_pr;
 	struct statvfs		pvfsr_sb;
 };
 struct puffs_vfsmsg_sync {
 	struct puffs_req	pvfsr_pr;
 	struct puffs_kcred	pvfsr_cred;
 	int			pvfsr_waitfor;
 };
 struct puffs_vfsmsg_fhtonode {
 	struct puffs_req	pvfsr_pr;
 	void			*pvfsr_fhcookie;	/* IN	*/
 	enum vtype		pvfsr_vtype;		/* IN	*/
 	voff_t			pvfsr_size;		/* IN	*/
 	dev_t			pvfsr_rdev;		/* IN	*/
 	size_t			pvfsr_dsize;		/* OUT */
 	uint8_t			pvfsr_data[0]		/* OUT, XXX */
 				    __aligned(ALIGNBYTES+1);
 };
 struct puffs_vfsmsg_nodetofh {
 	struct puffs_req	pvfsr_pr;
 	void			*pvfsr_fhcookie;	/* OUT	*/
 	size_t			pvfsr_dsize;		/* OUT/IN  */
 	uint8_t			pvfsr_data[0]		/* IN, XXX */
 				    __aligned(ALIGNBYTES+1);
 };
 struct puffs_vfsmsg_suspend {
 	struct puffs_req	pvfsr_pr;
 	int			pvfsr_status;
 };
 #define PUFFS_SUSPEND_START	0
 #define PUFFS_SUSPEND_SUSPENDED	1
 #define PUFFS_SUSPEND_RESUME	2
 #define PUFFS_SUSPEND_ERROR	3
 /*
  * aux structures for vnode operations.
  */
 struct puffs_vnmsg_lookup {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	puffs_cookie_t		pvnr_newnode;		/* IN	*/
 	enum vtype		pvnr_vtype;		/* IN	*/
 	voff_t			pvnr_size;		/* IN	*/
 	dev_t			pvnr_rdev;		/* IN	*/
 };
 struct puffs_vnmsg_create {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	struct vattr		pvnr_va;		/* OUT	*/
 	puffs_cookie_t		pvnr_newnode;		/* IN	*/
 };
 struct puffs_vnmsg_mknod {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	struct vattr		pvnr_va;		/* OUT	*/
 	puffs_cookie_t		pvnr_newnode;		/* IN	*/
 };
 struct puffs_vnmsg_open {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 	int			pvnr_mode;		/* OUT	*/
 };
 struct puffs_vnmsg_close {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 	int			pvnr_fflag;		/* OUT	*/
 };
 struct puffs_vnmsg_access {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 	int			pvnr_mode;		/* OUT	*/
 };
 #define puffs_vnmsg_setattr puffs_vnmsg_setgetattr
 #define puffs_vnmsg_getattr puffs_vnmsg_setgetattr
 struct puffs_vnmsg_setgetattr {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 	struct vattr		pvnr_va;		/* IN/OUT (op depend) */
 };
 #define puffs_vnmsg_read puffs_vnmsg_rw
 #define puffs_vnmsg_write puffs_vnmsg_rw
 struct puffs_vnmsg_rw {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	  */
 	off_t			pvnr_offset;		/* OUT	  */
 	size_t			pvnr_resid;		/* IN/OUT */
 	int			pvnr_ioflag;		/* OUT	  */
 	uint8_t			pvnr_data[0];		/* IN/OUT (wr/rd) */
 };
 #define puffs_vnmsg_ioctl puffs_vnreq_fcnioctl
 #define puffs_vnmsg_fcntl puffs_vnreq_fcnioctl
 struct puffs_vnmsg_fcnioctl {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;
 	u_long			pvnr_command;
 	pid_t			pvnr_pid;
 	int			pvnr_fflag;
 	void			*pvnr_data;
 	size_t			pvnr_datalen;
 	int			pvnr_copyback;
 };
 struct puffs_vnmsg_poll {
 	struct puffs_req	pvn_pr;
 	int			pvnr_events;		/* IN/OUT */
 };
 struct puffs_vnmsg_fsync {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 	off_t			pvnr_offlo;		/* OUT	*/
 	off_t			pvnr_offhi;		/* OUT	*/
 	int			pvnr_flags;		/* OUT	*/
 };
 struct puffs_vnmsg_seek {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 	off_t			pvnr_oldoff;		/* OUT	*/
 	off_t			pvnr_newoff;		/* OUT	*/
 };
 struct puffs_vnmsg_remove {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	puffs_cookie_t		pvnr_cookie_targ;	/* OUT	*/
 };
 struct puffs_vnmsg_mkdir {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	struct vattr		pvnr_va;		/* OUT	*/
 	puffs_cookie_t		pvnr_newnode;		/* IN	*/
 };
 struct puffs_vnmsg_rmdir {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	puffs_cookie_t		pvnr_cookie_targ;	/* OUT	*/
 };
 struct puffs_vnmsg_link {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	puffs_cookie_t		pvnr_cookie_targ;	/* OUT	*/
 };
 struct puffs_vnmsg_rename {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn_src;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_src_cred;	/* OUT	*/
 	struct puffs_kcn	pvnr_cn_targ;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_targ_cred;	/* OUT	*/
 	puffs_cookie_t		pvnr_cookie_src;	/* OUT	*/
 	puffs_cookie_t		pvnr_cookie_targ;	/* OUT	*/
 	puffs_cookie_t		pvnr_cookie_targdir;	/* OUT	*/
 };
 struct puffs_vnmsg_symlink {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 	struct vattr		pvnr_va;		/* OUT	*/
 	puffs_cookie_t		pvnr_newnode;		/* IN	*/
 	char			pvnr_link[MAXPATHLEN];	/* OUT	*/
 };
 struct puffs_vnmsg_readdir {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT	  */
 	off_t			pvnr_offset;		/* IN/OUT */
 	size_t			pvnr_resid;		/* IN/OUT */
 	size_t			pvnr_ncookies;		/* IN/OUT */
 	int			pvnr_eofflag;		/* IN     */
 	size_t			pvnr_dentoff;		/* OUT    */
 	uint8_t			pvnr_data[0]		/* IN  	  */
 				    __aligned(ALIGNBYTES+1);
 };
 struct puffs_vnmsg_readlink {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcred	pvnr_cred;		/* OUT */
 	size_t			pvnr_linklen;		/* IN  */
 	char			pvnr_link[MAXPATHLEN];	/* IN, XXX  */
 };
 struct puffs_vnmsg_reclaim {
 	struct puffs_req	pvn_pr;
 };
 struct puffs_vnmsg_inactive {
 	struct puffs_req	pvn_pr;
 };
 struct puffs_vnmsg_print {
 	struct puffs_req	pvn_pr;
 	/* empty */
 };
 struct puffs_vnmsg_pathconf {
 	struct puffs_req	pvn_pr;
 	int			pvnr_name;		/* OUT	*/
 	int			pvnr_retval;		/* IN	*/
 };
 struct puffs_vnmsg_advlock {
 	struct puffs_req	pvn_pr;
 	struct flock		pvnr_fl;		/* OUT	*/
 	void			*pvnr_id;		/* OUT	*/
 	int			pvnr_op;		/* OUT	*/
 	int			pvnr_flags;		/* OUT	*/
 };
 struct puffs_vnmsg_mmap {
 	struct puffs_req	pvn_pr;
 	vm_prot_t		pvnr_prot;		/* OUT	*/
 	struct puffs_kcred	pvnr_cred;		/* OUT	*/
 };
 struct puffs_vnmsg_abortop {
 	struct puffs_req	pvn_pr;
 	struct puffs_kcn	pvnr_cn;		/* OUT	*/
 	struct puffs_kcred	pvnr_cn_cred;		/* OUT	*/
 };
 /*
  * For cache reports.  Everything is always out-out-out, no replies
  */
 struct puffs_cacherun {
 	off_t			pcache_runstart;
 	off_t			pcache_runend;
 };
 /* cache info.  old used for write now */
 struct puffs_cacheinfo {
 	struct puffs_req	pcache_pr;
 	int			pcache_type;
 	size_t			pcache_nruns;
 	struct puffs_cacherun	pcache_runs[0];
 };
 #define PCACHE_TYPE_READ	0
 #define PCACHE_TYPE_WRITE	1
 /*
  * Error notification.  Always outgoing, no response, no remorse.
  */
 struct puffs_error {
 	struct puffs_req	perr_pr;
 	int			perr_error;
 	char			perr_str[256];
 };
 #endif /* _FS_PUFFS_PUFFS_MSGIF_H_ */