psshfs.h revision 1.31
1 /* $NetBSD: psshfs.h,v 1.31 2007/11/30 19:02:40 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2006, 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 PSSHFS_H_ 29 #define PSSHFS_H_ 30 31 #include <sys/queue.h> 32 33 #include <puffs.h> 34 35 extern unsigned int max_reads; 36 37 /* 38 * Later protocol versions would have some advantages (such as link count 39 * supported directly as a part of stat), but since proto version 3 seems 40 * to be the only widely available version, let's not try to jump through 41 * too many hoops to be compatible with all versions. 42 */ 43 #define SFTP_PROTOVERSION 3 44 45 #define DEFAULTREFRESH 30 46 #define REFRESHTIMEOUT(pctx, t) \ 47 (!(pctx)->refreshival || ((pctx->refreshival!=-1) && ((t)>pctx->refreshival))) 48 49 PUFFSOP_PROTOS(psshfs); 50 51 #define NEXTREQ(pctx) ((pctx->nextreq)++) 52 #define PSSHFSAUTOVAR(pu) \ 53 struct puffs_cc *pcc = puffs_cc_getcc(pu); \ 54 struct psshfs_ctx *pctx = puffs_getspecific(pu); \ 55 uint32_t reqid = NEXTREQ(pctx); \ 56 struct puffs_framebuf *pb = psbuf_makeout(); \ 57 int rv = 0 58 59 #define PSSHFSRETURN(rv) \ 60 puffs_framebuf_destroy(pb); \ 61 return (rv) 62 63 #define GETRESPONSE(pb) \ 64 do { \ 65 if (puffs_framev_enqueue_cc(pcc, pctx->sshfd, pb, 0) == -1) { \ 66 rv = errno; \ 67 goto out; \ 68 } \ 69 } while (/*CONSTCOND*/0) 70 71 #define JUSTSEND(pb) \ 72 do { \ 73 if (puffs_framev_enqueue_justsend(pu,pctx->sshfd,pb,1,0) == -1){\ 74 rv = errno; \ 75 goto out; \ 76 } \ 77 } while (/*CONSTCOND*/0) 78 79 #define SENDCB(pb, f, a) \ 80 do { \ 81 if (puffs_framev_enqueue_cb(pu, pctx->sshfd, pb,f,a,0) == -1) { \ 82 rv = errno; \ 83 goto out; \ 84 } \ 85 } while (/*CONSTCOND*/0) 86 87 struct psshfs_dir { 88 int valid; 89 struct puffs_node *entry; 90 91 char *entryname; 92 struct vattr va; 93 time_t attrread; 94 95 struct puffs_framebuf *getattr_pb; 96 }; 97 98 struct psshfs_fid { 99 time_t mounttime; 100 struct puffs_node *node; 101 }; 102 103 struct psshfs_wait { 104 struct puffs_cc *pw_cc; 105 int pw_type; 106 TAILQ_ENTRY(psshfs_wait) pw_entries; 107 }; 108 #define PWTYPE_READDIR 1 109 #define PWTYPE_READ1 2 110 #define PWTYPE_READ2 3 111 #define PWTYPE_WRITE 4 112 113 struct psshfs_node { 114 struct puffs_node *parent; 115 116 struct psshfs_dir *dir; /* only valid if we're of type VDIR */ 117 struct delayattr { 118 struct puffs_framebuf *pufbuf; 119 struct readdirattr *rda; 120 } *da; 121 size_t nextda; 122 123 size_t denttot; 124 size_t dentnext; 125 time_t dentread; 126 int childcount; 127 128 int stat; 129 int readcount; 130 131 time_t attrread; 132 char *symlink; 133 time_t slread; 134 struct puffs_framebuf *getattr_pb; 135 136 char *fhand_r; 137 char *fhand_w; 138 uint32_t fhand_r_len; 139 uint32_t fhand_w_len; 140 struct puffs_framebuf *lazyopen_r; 141 struct puffs_framebuf *lazyopen_w; 142 int lazyopen_err_r, lazyopen_err_w; 143 144 TAILQ_HEAD(, psshfs_wait) pw; 145 }; 146 #define PSN_RECLAIMED 0x01 147 #define PSN_HASFH 0x02 148 #define PSN_READDIR 0x04 149 #define PSN_DOLAZY_R 0x08 150 #define PSN_DOLAZY_W 0x10 151 #define PSN_LAZYWAIT_R 0x20 152 #define PSN_LAZYWAIT_W 0x40 153 #define PSN_HANDLECLOSE 0x80 154 155 #define HANDLE_READ 0x1 156 #define HANDLE_WRITE 0x2 157 158 struct psshfs_ctx { 159 int sshfd; 160 pid_t sshpid; 161 const char *mountpath; 162 163 int protover; 164 uint32_t nextreq; 165 166 struct puffs_framebuf *curpb; 167 168 struct psshfs_node psn_root; 169 ino_t nextino; 170 171 int canexport; 172 time_t mounttime; 173 174 int refreshival; 175 }; 176 177 int psshfs_domount(struct puffs_usermount *); 178 179 int psbuf_read(struct puffs_usermount *, struct puffs_framebuf *,int,int*); 180 int psbuf_write(struct puffs_usermount *, struct puffs_framebuf *,int,int*); 181 int psbuf_cmp(struct puffs_usermount *, 182 struct puffs_framebuf *, struct puffs_framebuf *, int *); 183 184 struct puffs_framebuf *psbuf_makeout(void); 185 void psbuf_recycleout(struct puffs_framebuf *); 186 187 void psbuf_put_1(struct puffs_framebuf *, uint8_t); 188 void psbuf_put_2(struct puffs_framebuf *, uint16_t); 189 void psbuf_put_4(struct puffs_framebuf *, uint32_t); 190 void psbuf_put_8(struct puffs_framebuf *, uint64_t); 191 void psbuf_put_str(struct puffs_framebuf *, const char *); 192 void psbuf_put_data(struct puffs_framebuf *, const void *, uint32_t); 193 void psbuf_put_vattr(struct puffs_framebuf *, const struct vattr *); 194 195 uint8_t psbuf_get_type(struct puffs_framebuf *); 196 uint32_t psbuf_get_len(struct puffs_framebuf *); 197 uint32_t psbuf_get_reqid(struct puffs_framebuf *); 198 199 int psbuf_get_1(struct puffs_framebuf *, uint8_t *); 200 int psbuf_get_2(struct puffs_framebuf *, uint16_t *); 201 int psbuf_get_4(struct puffs_framebuf *, uint32_t *); 202 int psbuf_get_8(struct puffs_framebuf *, uint64_t *); 203 int psbuf_get_str(struct puffs_framebuf *, char **, uint32_t *); 204 int psbuf_get_vattr(struct puffs_framebuf *, struct vattr *); 205 206 int psbuf_expect_status(struct puffs_framebuf *); 207 int psbuf_expect_handle(struct puffs_framebuf *, char **, uint32_t *); 208 int psbuf_expect_name(struct puffs_framebuf *, uint32_t *); 209 int psbuf_expect_attrs(struct puffs_framebuf *, struct vattr *); 210 211 int psbuf_do_data(struct puffs_framebuf *, uint8_t *, uint32_t *); 212 213 void psbuf_req_data(struct puffs_framebuf *, int, uint32_t, 214 const void *, uint32_t); 215 void psbuf_req_str(struct puffs_framebuf *, int, uint32_t, const char *); 216 217 int sftp_readdir(struct puffs_cc *, struct psshfs_ctx *, 218 struct puffs_node *); 219 220 struct psshfs_dir *lookup(struct psshfs_dir *, size_t, const char *); 221 struct puffs_node *makenode(struct puffs_usermount *, struct puffs_node *, 222 struct psshfs_dir *, const struct vattr *); 223 struct puffs_node *allocnode(struct puffs_usermount *, struct puffs_node *, 224 const char *, const struct vattr *); 225 struct psshfs_dir *direnter(struct puffs_node *, const char *); 226 void nukenode(struct puffs_node *, const char *, int); 227 void doreclaim(struct puffs_node *); 228 int getpathattr(struct puffs_usermount *, const char *, struct vattr *); 229 int getnodeattr(struct puffs_usermount *, struct puffs_node *); 230 231 void closehandles(struct puffs_usermount *, struct psshfs_node *, int); 232 void lazyopen_rresp(struct puffs_usermount *, struct puffs_framebuf *, 233 void *, int); 234 void lazyopen_wresp(struct puffs_usermount *, struct puffs_framebuf *, 235 void *, int); 236 237 #endif /* PSSHFS_H_ */ 238
Indexes created Mon Sep 29 21:09:56 GMT 2025