/* $NetBSD: puffs_sys.h,v 1.25.4.1 2007/07/11 20:09:29 mjf Exp $ */
/*
* Copyright (c) 2005, 2006 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 _PUFFS_SYS_H_
#define _PUFFS_SYS_H_
#include <sys/param.h>
#include <sys/select.h>
#include <sys/kauth.h>
#include <sys/mutex.h>
#include <sys/queue.h>
#include <sys/pool.h>
#include <fs/puffs/puffs_msgif.h>
#include <miscfs/genfs/genfs_node.h>
extern int (**puffs_vnodeop_p)(void *);
extern int (**puffs_specop_p)(void *);
extern int (**puffs_fifoop_p)(void *);
extern const struct vnodeopv_desc puffs_vnodeop_opv_desc;
extern const struct vnodeopv_desc puffs_specop_opv_desc;
extern const struct vnodeopv_desc puffs_fifoop_opv_desc;
extern const struct vnodeopv_desc puffs_msgop_opv_desc;
extern struct pool puffs_pnpool;
#define PUFFS_NAMEPREFIX "puffs:"
#define PUFFS_SIZEOPREQ_UIO_IN 1
#define PUFFS_SIZEOPREQ_UIO_OUT 2
#define PUFFS_SIZEOPREQ_BUF_IN 3
#define PUFFS_SIZEOPREQ_BUF_OUT 4
#define PUFFS_SIZEOP_UIO(a) \
(((a)==PUFFS_SIZEOPREQ_UIO_IN)||(a)==PUFFS_SIZEOPREQ_UIO_OUT)
#define PUFFS_SIZEOP_BUF(a) \
(((a)==PUFFS_SIZEOPREQ_BUF_IN)||(a)==PUFFS_SIZEOPREQ_BUF_OUT)
/* XXX: alignment-optimization */
struct puffs_sizepark {
uint64_t pkso_reqid;
uint8_t pkso_reqtype;
struct uio *pkso_uio;
void *pkso_copybuf;
size_t pkso_bufsize;
TAILQ_ENTRY(puffs_sizepark) pkso_entries;
};
#ifdef DEBUG
#ifndef PUFFSDEBUG
#define PUFFSDEBUG
#endif
#endif
#ifdef PUFFSDEBUG
extern int puffsdebug; /* puffs_subr.c */
#define DPRINTF(x) if (puffsdebug > 0) printf x
#define DPRINTF_VERBOSE(x) if (puffsdebug > 1) printf x
#else
#define DPRINTF(x)
#define DPRINTF_VERBOSE(x)
#endif
#define MPTOPUFFSMP(mp) ((struct puffs_mount *)((mp)->mnt_data))
#define PMPTOMP(pmp) (pmp->pmp_mp)
#define VPTOPP(vp) ((struct puffs_node *)(vp)->v_data)
#define VPTOPNC(vp) (((struct puffs_node *)(vp)->v_data)->pn_cookie)
#define VPTOPUFFSMP(vp) ((struct puffs_mount*)((struct puffs_node*)vp->v_data))
#define FPTOPMP(fp) (((struct puffs_instance *)fp->f_data)->pi_pmp)
#define FPTOPI(fp) ((struct puffs_instance *)fp->f_data)
/* we don't pass the kernel overlay to userspace */
#define PUFFS_TOFHSIZE(s) ((s)==0 ? (s) : (s)+4)
#define PUFFS_FROMFHSIZE(s) ((s)==0 ? (s) : (s)-4)
#define ALLOPS(pmp) (pmp->pmp_flags & PUFFS_KFLAG_ALLOPS)
#define EXISTSOP(pmp, op) \
(ALLOPS(pmp) || ((pmp)->pmp_vnopmask[PUFFS_VN_##op]))
#define PUFFS_USE_NAMECACHE(pmp) \
(((pmp)->pmp_flags & PUFFS_KFLAG_NOCACHE_NAME) == 0)
#define PUFFS_USE_PAGECACHE(pmp) \
(((pmp)->pmp_flags & PUFFS_KFLAG_NOCACHE_PAGE) == 0)
#define PUFFS_USE_FULLPNBUF(pmp) \
((pmp)->pmp_flags & PUFFS_KFLAG_LOOKUP_FULLPNBUF)
#define PUFFS_WCACHEINFO(pmp) 0
TAILQ_HEAD(puffs_wq, puffs_park);
LIST_HEAD(puffs_node_hashlist, puffs_node);
struct puffs_mount {
kmutex_t pmp_lock;
struct puffs_kargs pmp_args;
#define pmp_flags pmp_args.pa_flags
#define pmp_vnopmask pmp_args.pa_vnopmask
struct puffs_wq pmp_req_touser;
int pmp_req_touser_count;
kcondvar_t pmp_req_waiter_cv;
size_t pmp_req_maxsize;
struct puffs_wq pmp_req_replywait;
TAILQ_HEAD(, puffs_sizepark) pmp_req_sizepark;
struct puffs_node_hashlist *pmp_pnodehash;
int pmp_npnodehash;
struct mount *pmp_mp;
struct vnode *pmp_root;
void *pmp_root_cookie;
enum vtype pmp_root_vtype;
vsize_t pmp_root_vsize;
dev_t pmp_root_rdev;
struct selinfo *pmp_sel; /* in puffs_instance */
unsigned int pmp_refcount;
kcondvar_t pmp_refcount_cv;
kcondvar_t pmp_unmounting_cv;
uint8_t pmp_unmounting;
uint8_t pmp_status;
uint8_t pmp_suspend;
uint64_t pmp_nextreq;
};
#define PUFFSTAT_BEFOREINIT 0
#define PUFFSTAT_MOUNTING 1
#define PUFFSTAT_RUNNING 2
#define PUFFSTAT_DYING 3 /* Do you want your possessions identified? */
#define PNODE_NOREFS 0x01 /* no backend reference */
#define PNODE_DYING 0x02 /* NOREF + inactive */
#define PNODE_SUSPEND 0x04 /* issue all operations as FAF */
#define PNODE_DOINACT 0x08 /* if inactive-on-demand, call inactive */
#define PNODE_METACACHE_ATIME 0x10 /* cache atime metadata */
#define PNODE_METACACHE_CTIME 0x20 /* cache atime metadata */
#define PNODE_METACACHE_MTIME 0x40 /* cache atime metadata */
#define PNODE_METACACHE_SIZE 0x80 /* cache atime metadata */
#define PNODE_METACACHE_MASK 0xf0
struct puffs_node {
struct genfs_node pn_gnode; /* genfs glue */
kmutex_t pn_mtx;
int pn_refcount;
void *pn_cookie; /* userspace pnode cookie */
struct vnode *pn_vp; /* backpointer to vnode */
uint32_t pn_stat; /* node status */
struct selinfo pn_sel; /* for selecting on the node */
short pn_revents; /* available events */
/* metacache */
struct timespec pn_mc_atime;
struct timespec pn_mc_ctime;
struct timespec pn_mc_mtime;
u_quad_t pn_mc_size;
LIST_ENTRY(puffs_node) pn_hashent;
};
typedef void (*parkdone_fn)(struct puffs_req *, void *);
void puffs_transport_init(void);
void puffs_transport_destroy(void);
void puffs_msgif_init(void);
void puffs_msgif_destroy(void);
void *puffs_park_alloc(int);
void puffs_park_release(void *, int);
int puffs_vfstouser(struct puffs_mount *, int, void *, size_t);
void puffs_suspendtouser(struct puffs_mount *, int);
int puffs_vntouser(struct puffs_mount *, int, void *, size_t, size_t,
struct vnode *, struct vnode *);
int puffs_vntouser_req(struct puffs_mount *, int, void *, size_t, size_t,
uint64_t, struct vnode *, struct vnode *);
void puffs_vntouser_call(struct puffs_mount *, int, void *, size_t, size_t,
parkdone_fn, void *, struct vnode *, struct vnode*);
void puffs_vntouser_faf(struct puffs_mount *, int, void *, size_t,
struct vnode *);
void puffs_cacheop(struct puffs_mount *, struct puffs_park *,
struct puffs_cacheinfo *, size_t, void *);
struct puffs_park *puffs_cacheop_alloc(void);
int puffs_getvnode(struct mount *, void *, enum vtype, voff_t, dev_t,
struct vnode **);
int puffs_newnode(struct mount *, struct vnode *, struct vnode **,
void *, struct componentname *, enum vtype, dev_t);
void puffs_putvnode(struct vnode *);
void puffs_releasenode(struct puffs_node *);
void puffs_referencenode(struct puffs_node *);
int puffs_pnode2vnode(struct puffs_mount *, void *, int, struct vnode **);
void puffs_makecn(struct puffs_kcn *, struct puffs_kcred *,
struct puffs_kcid *, const struct componentname *, int);
void puffs_credcvt(struct puffs_kcred *, kauth_cred_t);
void puffs_cidcvt(struct puffs_kcid *, const struct lwp *);
void puffs_parkdone_asyncbioread(struct puffs_req *, void *);
void puffs_parkdone_poll(struct puffs_req *, void *);
void puffs_mp_reference(struct puffs_mount *);
void puffs_mp_release(struct puffs_mount *);
void puffs_updatenode(struct vnode *, int);
#define PUFFS_UPDATEATIME 0x01
#define PUFFS_UPDATECTIME 0x02
#define PUFFS_UPDATEMTIME 0x04
#define PUFFS_UPDATESIZE 0x08
void puffs_updatevpsize(struct vnode *);
int puffs_setpmp(pid_t, int, struct puffs_mount *);
void puffs_nukebypmp(struct puffs_mount *);
uint64_t puffs_getreqid(struct puffs_mount *);
void puffs_userdead(struct puffs_mount *);
/* get/put called by ioctl handler */
int puffs_getop(struct puffs_mount *, struct puffs_reqh_get *, int);
int puffs_putop(struct puffs_mount *, struct puffs_reqh_put *);
extern int (**puffs_vnodeop_p)(void *);
MALLOC_DECLARE(M_PUFFS);
#endif /* _PUFFS_SYS_H_ */
![[BACK]](/icons/back.gif){kind=icon}
Return to puffs_sys.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / fs / puffs