NetBSD-5.0.2/usr.sbin/puffs/mount_9p/ninepuffs.h
/* $NetBSD: ninepuffs.h,v 1.12 2007/11/30 19:02:38 pooka Exp $ */
/*
* Copyright (c) 2007 Antti Kantee. All Rights Reserved.
*
* 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 PUFFS9P_H_
#define PUFFS9P_H_
#include <sys/queue.h>
#include <puffs.h>
PUFFSOP_PROTOS(puffs9p);
/* Qid structure. optimized for in-mem. different order on-wire */
struct qid9p {
uint64_t qidpath;
uint32_t qidvers;
uint8_t qidtype;
};
typedef uint16_t p9ptag_t;
typedef uint32_t p9pfid_t;
/*
* refuse (no, not *that* refuse) to play if the server doesn't
* support requests of at least the following size. It would only
* make life difficult
*/
#define P9P_MINREQLEN 512
#define P9P_DEFREQLEN (16*1024)
#define P9P_INVALFID 0
#define P9P_ROOTFID 1
#define NEXTTAG(p9p) \
((++(p9p->nexttag)) == P9PROTO_NOTAG ? p9p->nexttag = 0 : p9p->nexttag)
#define NEXTFID(p9p) \
((++(p9p->nextfid)) == P9P_INVALFID ? p9p->nextfid = 2 : p9p->nextfid)
#define AUTOVAR(pu) \
struct puffs_cc *pcc = puffs_cc_getcc(pu); \
struct puffs9p *p9p = puffs_getspecific(pu); \
uint16_t tag = NEXTTAG(p9p); \
struct puffs_framebuf *pb = p9pbuf_makeout(); \
int rv = 0
#define RETURN(rv) \
puffs_framebuf_destroy(pb); \
return (rv)
#define GETRESPONSE(pb) \
do { \
if (puffs_framev_enqueue_cc(pcc, p9p->servsock, pb, 0) == -1) { \
rv = errno; \
goto out; \
} \
} while (/*CONSTCOND*/0)
#define JUSTSEND(pb) \
do { \
if (puffs_framev_enqueue_justsend(pu,p9p->servsock,pb,1,0)==-1){\
rv = errno; \
goto out; \
} \
} while (/*CONSTCOND*/0)
#define SENDCB(pb, f, a) \
do { \
if (puffs_framev_enqueue_cb(pu, p9p->servsock,pb,f,a,0) == -1) {\
rv = errno; \
goto out; \
} \
} while (/*CONSTCOND*/0)
struct puffs9p {
int servsock;
p9ptag_t nexttag;
p9pfid_t nextfid;
size_t maxreq; /* negotiated with server */
};
struct dirfid {
p9pfid_t fid;
off_t seekoff;
LIST_ENTRY(dirfid) entries;
};
struct p9pnode {
p9pfid_t fid_base;
p9pfid_t fid_read;
p9pfid_t fid_write;
LIST_HEAD(,dirfid) dir_openlist;
};
struct puffs_framebuf *p9pbuf_makeout(void);
void p9pbuf_recycleout(struct puffs_framebuf *);
int p9pbuf_read(struct puffs_usermount *, struct puffs_framebuf *,int,int*);
int p9pbuf_write(struct puffs_usermount *, struct puffs_framebuf*,int,int*);
int p9pbuf_cmp(struct puffs_usermount *,
struct puffs_framebuf *, struct puffs_framebuf *, int *);
void p9pbuf_put_1(struct puffs_framebuf *, uint8_t);
void p9pbuf_put_2(struct puffs_framebuf *, uint16_t);
void p9pbuf_put_4(struct puffs_framebuf *, uint32_t);
void p9pbuf_put_8(struct puffs_framebuf *, uint64_t);
void p9pbuf_put_str(struct puffs_framebuf *, const char *);
void p9pbuf_put_data(struct puffs_framebuf *, const void *, uint16_t);
void p9pbuf_write_data(struct puffs_framebuf *, uint8_t *, uint32_t);
int p9pbuf_get_1(struct puffs_framebuf *, uint8_t *);
int p9pbuf_get_2(struct puffs_framebuf *, uint16_t *);
int p9pbuf_get_4(struct puffs_framebuf *, uint32_t *);
int p9pbuf_get_8(struct puffs_framebuf *, uint64_t *);
int p9pbuf_get_str(struct puffs_framebuf *, char **, uint16_t *);
int p9pbuf_get_data(struct puffs_framebuf *, uint8_t **, uint16_t *);
int p9pbuf_read_data(struct puffs_framebuf *, uint8_t *, uint32_t);
uint8_t p9pbuf_get_type(struct puffs_framebuf *);
uint16_t p9pbuf_get_tag(struct puffs_framebuf *);
int proto_getqid(struct puffs_framebuf *, struct qid9p *);
int proto_getstat(struct puffs_framebuf *, struct vattr *,
char **, uint16_t *);
int proto_expect_walk_nqids(struct puffs_framebuf *, uint16_t *);
int proto_expect_stat(struct puffs_framebuf *, struct vattr *);
int proto_expect_qid(struct puffs_framebuf *, uint8_t, struct qid9p *);
int proto_cc_dupfid(struct puffs_usermount *, p9pfid_t, p9pfid_t);
int proto_cc_clunkfid(struct puffs_usermount *, p9pfid_t, int);
int proto_cc_open(struct puffs_usermount *, p9pfid_t, p9pfid_t, int);
void proto_make_stat(struct puffs_framebuf *, const struct vattr *,
const char *, enum vtype);
struct puffs_node *p9p_handshake(struct puffs_usermount *,
const char *, const char *);
void qid2vattr(struct vattr *, const struct qid9p *);
struct puffs_node *newp9pnode_va(struct puffs_usermount *,
const struct vattr *, p9pfid_t);
struct puffs_node *newp9pnode_qid(struct puffs_usermount *,
const struct qid9p *, p9pfid_t);
int getdfwithoffset(struct puffs_usermount *, struct p9pnode *, off_t,
struct dirfid **);
void storedf(struct p9pnode *, struct dirfid *);
void releasedf(struct puffs_usermount *, struct dirfid *);
void nukealldf(struct puffs_usermount *, struct p9pnode *);
#endif /* PUFFS9P_H_ */