fs.c revision 1.12
1 /* $NetBSD: fs.c,v 1.12 2007/07/01 17:23:45 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2006 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 #include <sys/cdefs.h> 29 #ifndef lint 30 __RCSID("$NetBSD: fs.c,v 1.12 2007/07/01 17:23:45 pooka Exp $"); 31 #endif /* !lint */ 32 33 #include <err.h> 34 #include <errno.h> 35 #include <puffs.h> 36 #include <signal.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <unistd.h> 40 41 #include "psshfs.h" 42 #include "sftp_proto.h" 43 44 #define DO_IO(fname, a1, a2, a3, a4, rv) \ 45 puffs_framebuf_seekset(a2, 0); \ 46 *(a4) = 0; \ 47 rv = fname(a1, a2, a3, a4); \ 48 if (rv || a4 == 0) errx(1, "psshfs_domount io failed %d, %d", rv, *a4) 49 50 int 51 psshfs_domount(struct puffs_usermount *pu) 52 { 53 struct psshfs_ctx *pctx = puffs_getspecific(pu); 54 struct psshfs_node *root = &pctx->psn_root; 55 struct puffs_pathobj *po_root; 56 struct puffs_node *pn_root; 57 struct vattr va; 58 struct vattr *rva; 59 struct puffs_framebuf *pb; 60 char *rootpath; 61 uint32_t count; 62 int rv, done; 63 64 pb = psbuf_makeout(); 65 psbuf_put_1(pb, SSH_FXP_INIT); 66 psbuf_put_4(pb, SFTP_PROTOVERSION); 67 DO_IO(psbuf_write, pu, pb, pctx->sshfd, &done, rv); 68 69 puffs_framebuf_recycle(pb); 70 DO_IO(psbuf_read, pu, pb, pctx->sshfd, &done, rv); 71 if (psbuf_get_type(pb) != SSH_FXP_VERSION) 72 errx(1, "invalid server response: %d", psbuf_get_type(pb)); 73 pctx->protover = psbuf_get_reqid(pb); 74 /* might contain some other stuff, but we're not interested */ 75 76 /* scope out our rootpath */ 77 psbuf_recycleout(pb); 78 psbuf_put_1(pb, SSH_FXP_REALPATH); 79 psbuf_put_4(pb, NEXTREQ(pctx)); 80 psbuf_put_str(pb, pctx->mountpath); 81 DO_IO(psbuf_write, pu, pb, pctx->sshfd, &done, rv); 82 83 puffs_framebuf_recycle(pb); 84 DO_IO(psbuf_read, pu, pb, pctx->sshfd, &done, rv); 85 if (psbuf_get_type(pb) != SSH_FXP_NAME) 86 errx(1, "invalid server realpath response for \"%s\"", 87 pctx->mountpath); 88 if (psbuf_get_4(pb, &count) == -1) 89 errx(1, "invalid realpath response: count"); 90 if (psbuf_get_str(pb, &rootpath, NULL) == -1) 91 errx(1, "invalid realpath response: rootpath"); 92 93 /* stat the rootdir so that we know it's a dir */ 94 psbuf_recycleout(pb); 95 psbuf_req_str(pb, SSH_FXP_LSTAT, NEXTREQ(pctx), rootpath); 96 DO_IO(psbuf_write, pu, pb, pctx->sshfd, &done, rv); 97 98 puffs_framebuf_recycle(pb); 99 DO_IO(psbuf_read, pu, pb, pctx->sshfd, &done, rv); 100 101 rv = psbuf_expect_attrs(pb, &va); 102 if (rv) 103 errx(1, "couldn't stat rootpath"); 104 puffs_framebuf_destroy(pb); 105 106 if (puffs_mode2vt(va.va_mode) != VDIR) 107 errx(1, "remote path (%s) not a directory", rootpath); 108 109 pctx->nextino = 2; 110 111 memset(root, 0, sizeof(struct psshfs_node)); 112 pn_root = puffs_pn_new(pu, root); 113 if (pn_root == NULL) 114 return errno; 115 puffs_setroot(pu, pn_root); 116 117 po_root = puffs_getrootpathobj(pu); 118 if (po_root == NULL) 119 err(1, "getrootpathobj"); 120 po_root->po_path = rootpath; 121 po_root->po_len = strlen(rootpath); 122 123 rva = &pn_root->pn_va; 124 puffs_setvattr(rva, &va); 125 rva->va_fileid = pctx->nextino++; 126 rva->va_nlink = 0156; /* XXX */ 127 128 return 0; 129 } 130 131 int 132 psshfs_fs_unmount(struct puffs_cc *pcc, int flags, const struct puffs_cid *pcid) 133 { 134 struct puffs_usermount *pu = puffs_cc_getusermount(pcc); 135 struct psshfs_ctx *pctx = puffs_getspecific(pu); 136 137 kill(pctx->sshpid, SIGTERM); 138 close(pctx->sshfd); 139 return 0; 140 } 141 142 int 143 psshfs_fs_nodetofh(struct puffs_cc *pcc, void *cookie, 144 void *fid, size_t *fidsize) 145 { 146 struct puffs_usermount *pu = puffs_cc_getusermount(pcc); 147 struct psshfs_ctx *pctx = puffs_getspecific(pu); 148 struct puffs_node *pn = cookie; 149 struct psshfs_node *psn = pn->pn_data; 150 struct psshfs_fid *pf = fid; 151 152 pf->mounttime = pctx->mounttime; 153 pf->node = pn; 154 155 psn->stat |= PSN_HASFH; 156 157 return 0; 158 } 159 160 int 161 psshfs_fs_fhtonode(struct puffs_cc *pcc, void *fid, size_t fidsize, 162 void **fcookie, enum vtype *ftype, voff_t *fsize, dev_t *fdev) 163 { 164 struct puffs_usermount *pu = puffs_cc_getusermount(pcc); 165 struct psshfs_ctx *pctx = puffs_getspecific(pu); 166 struct psshfs_fid *pf = fid; 167 struct puffs_node *pn = pf->node; 168 struct psshfs_node *psn; 169 int rv; 170 171 if (pf->mounttime != pctx->mounttime) 172 return EINVAL; 173 if (pn == 0) 174 return EINVAL; 175 psn = pn->pn_data; 176 if ((psn->stat & PSN_HASFH) == 0) 177 return EINVAL; 178 179 /* update node attributes */ 180 rv = getnodeattr(pcc, pn); 181 if (rv) 182 return EINVAL; 183 184 *fcookie = pn; 185 *ftype = pn->pn_va.va_type; 186 *fsize = pn->pn_va.va_size; 187 188 return 0; 189 } 190
Indexes created Mon Oct 20 20:10:13 GMT 2025