ninepuffs.h revision 1.11
1/* $NetBSD: ninepuffs.h,v 1.11 2007/09/06 16:09:10 pooka Exp $ */ 2 3/* 4 * Copyright (c) 2007 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#ifndef PUFFS9P_H_ 29#define PUFFS9P_H_ 30 31#include <sys/queue.h> 32 33#include <puffs.h> 34 35PUFFSOP_PROTOS(puffs9p); 36 37/* Qid structure. optimized for in-mem. different order on-wire */ 38struct qid9p { 39 uint64_t qidpath; 40 uint32_t qidvers; 41 uint8_t qidtype; 42}; 43 44typedef uint16_t p9ptag_t; 45typedef uint32_t p9pfid_t; 46 47/* 48 * refuse (no, not *that* refuse) to play if the server doesn't 49 * support requests of at least the following size. It would only 50 * make life difficult 51 */ 52#define P9P_MINREQLEN 512 53 54#define P9P_DEFREQLEN (16*1024) 55#define P9P_INVALFID 0 56#define P9P_ROOTFID 1 57 58#define NEXTTAG(p9p) \ 59 ((++(p9p->nexttag)) == P9PROTO_NOTAG ? p9p->nexttag = 0 : p9p->nexttag) 60 61#define NEXTFID(p9p) \ 62 ((++(p9p->nextfid)) == P9P_INVALFID ? p9p->nextfid = 2 : p9p->nextfid) 63 64#define AUTOVAR(pcc) \ 65 struct puffs9p *p9p = puffs_cc_getspecific(pcc); \ 66 uint16_t tag = NEXTTAG(p9p); \ 67 struct puffs_framebuf *pb = p9pbuf_makeout(); \ 68 int rv = 0 69 70#define RETURN(rv) \ 71 puffs_framebuf_destroy(pb); \ 72 return (rv) 73 74#define GETRESPONSE(pb) \ 75do { \ 76 if (puffs_framev_enqueue_cc(pcc, p9p->servsock, pb, 0) == -1) { \ 77 rv = errno; \ 78 goto out; \ 79 } \ 80} while (/*CONSTCOND*/0) 81 82#define JUSTSEND(pb) \ 83do { \ 84 if (puffs_framev_enqueue_justsend(pu,p9p->servsock,pb,1,0)==-1){\ 85 rv = errno; \ 86 goto out; \ 87 } \ 88} while (/*CONSTCOND*/0) 89 90#define SENDCB(pb, f, a) \ 91do { \ 92 if (puffs_framev_enqueue_cb(pu, p9p->servsock,pb,f,a,0) == -1) {\ 93 rv = errno; \ 94 goto out; \ 95 } \ 96} while (/*CONSTCOND*/0) 97 98struct puffs9p { 99 int servsock; 100 101 p9ptag_t nexttag; 102 p9pfid_t nextfid; 103 104 size_t maxreq; /* negotiated with server */ 105}; 106 107struct dirfid { 108 p9pfid_t fid; 109 off_t seekoff; 110 LIST_ENTRY(dirfid) entries; 111}; 112 113struct p9pnode { 114 p9pfid_t fid_base; 115 p9pfid_t fid_read; 116 p9pfid_t fid_write; 117 118 LIST_HEAD(,dirfid) dir_openlist; 119}; 120 121struct puffs_framebuf *p9pbuf_makeout(void); 122void p9pbuf_recycleout(struct puffs_framebuf *); 123 124int p9pbuf_read(struct puffs_usermount *, struct puffs_framebuf *,int,int*); 125int p9pbuf_write(struct puffs_usermount *, struct puffs_framebuf*,int,int*); 126int p9pbuf_cmp(struct puffs_usermount *, 127 struct puffs_framebuf *, struct puffs_framebuf *, int *); 128 129void p9pbuf_put_1(struct puffs_framebuf *, uint8_t); 130void p9pbuf_put_2(struct puffs_framebuf *, uint16_t); 131void p9pbuf_put_4(struct puffs_framebuf *, uint32_t); 132void p9pbuf_put_8(struct puffs_framebuf *, uint64_t); 133void p9pbuf_put_str(struct puffs_framebuf *, const char *); 134void p9pbuf_put_data(struct puffs_framebuf *, const void *, uint16_t); 135void p9pbuf_write_data(struct puffs_framebuf *, uint8_t *, uint32_t); 136 137int p9pbuf_get_1(struct puffs_framebuf *, uint8_t *); 138int p9pbuf_get_2(struct puffs_framebuf *, uint16_t *); 139int p9pbuf_get_4(struct puffs_framebuf *, uint32_t *); 140int p9pbuf_get_8(struct puffs_framebuf *, uint64_t *); 141int p9pbuf_get_str(struct puffs_framebuf *, char **, uint16_t *); 142int p9pbuf_get_data(struct puffs_framebuf *, uint8_t **, uint16_t *); 143int p9pbuf_read_data(struct puffs_framebuf *, uint8_t *, uint32_t); 144 145uint8_t p9pbuf_get_type(struct puffs_framebuf *); 146uint16_t p9pbuf_get_tag(struct puffs_framebuf *); 147 148int proto_getqid(struct puffs_framebuf *, struct qid9p *); 149int proto_getstat(struct puffs_framebuf *, struct vattr *, 150 char **, uint16_t *); 151int proto_expect_walk_nqids(struct puffs_framebuf *, uint16_t *); 152int proto_expect_stat(struct puffs_framebuf *, struct vattr *); 153int proto_expect_qid(struct puffs_framebuf *, uint8_t, struct qid9p *); 154 155int proto_cc_dupfid(struct puffs_cc *, p9pfid_t, p9pfid_t); 156int proto_cc_clunkfid(struct puffs_cc *, p9pfid_t, int); 157int proto_cc_open(struct puffs_cc *, p9pfid_t, p9pfid_t, int); 158 159void proto_make_stat(struct puffs_framebuf *, const struct vattr *, 160 const char *, enum vtype); 161 162struct puffs_node *p9p_handshake(struct puffs_usermount *, 163 const char *, const char *); 164 165void qid2vattr(struct vattr *, const struct qid9p *); 166struct puffs_node *newp9pnode_va(struct puffs_usermount *, 167 const struct vattr *, p9pfid_t); 168struct puffs_node *newp9pnode_qid(struct puffs_usermount *, 169 const struct qid9p *, p9pfid_t); 170 171int getdfwithoffset(struct puffs_cc *, struct p9pnode *, off_t, 172 struct dirfid **); 173void storedf(struct p9pnode *, struct dirfid *); 174void releasedf(struct puffs_cc *, struct dirfid *); 175void nukealldf(struct puffs_cc *, struct p9pnode *); 176 177#endif /* PUFFS9P_H_ */ 178