/* $NetBSD: ninepuffs.h,v 1.14 2019/06/07 05:34:34 ozaki-r 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 #include 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 */ int protover; }; 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_usermount *, struct puffs_framebuf *, struct vattr *, char **, uint16_t *); int proto_expect_walk_nqids(struct puffs_usermount *, struct puffs_framebuf *, uint16_t *); int proto_expect_stat(struct puffs_usermount *, struct puffs_framebuf *, struct vattr *); int proto_expect_qid(struct puffs_usermount *, struct puffs_framebuf *, uint8_t, struct qid9p *); int proto_handle_rerror(struct puffs_usermount *, struct puffs_framebuf *); 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_usermount *, 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_ */