Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/nwfs/nwfs_vfsops.c
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1 /*- 2 * Copyright (c) 1999, 2000 Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 #include "opt_ncp.h" 35 #ifndef NCP 36 #error "NWFS requires NCP protocol" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/proc.h> 42 #include <sys/kernel.h> 43 #include <sys/sysctl.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/stat.h> 47 #include <sys/malloc.h> 48 #include <sys/bio.h> 49 #include <sys/buf.h> 50 51 #include <netncp/ncp.h> 52 #include <netncp/ncp_conn.h> 53 #include <netncp/ncp_subr.h> 54 #include <netncp/ncp_ncp.h> 55 #include <netncp/ncp_nls.h> 56 57 #include <fs/nwfs/nwfs.h> 58 #include <fs/nwfs/nwfs_node.h> 59 #include <fs/nwfs/nwfs_subr.h> 60 61 int nwfs_debuglevel = 0; 62 63 static int nwfs_version = NWFS_VERSION; 64 65 SYSCTL_DECL(_vfs_nwfs); 66 SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware filesystem"); 67 SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, ""); 68 SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, ""); 69 70 MODULE_DEPEND(nwfs, ncp, 1, 1, 1); 71 MODULE_DEPEND(nwfs, libmchain, 1, 1, 1); 72 73 static vfs_omount_t nwfs_omount; 74 static vfs_quotactl_t nwfs_quotactl; 75 static vfs_root_t nwfs_root; 76 static vfs_start_t nwfs_start; 77 static vfs_statfs_t nwfs_statfs; 78 static vfs_unmount_t nwfs_unmount; 79 static vfs_init_t nwfs_init; 80 static vfs_uninit_t nwfs_uninit; 81 82 static struct vfsops nwfs_vfsops = { 83 .vfs_init = nwfs_init, 84 .vfs_omount = nwfs_omount, 85 .vfs_quotactl = nwfs_quotactl, 86 .vfs_root = nwfs_root, 87 .vfs_start = nwfs_start, 88 .vfs_statfs = nwfs_statfs, 89 .vfs_sync = vfs_stdsync, 90 .vfs_uninit = nwfs_uninit, 91 .vfs_unmount = nwfs_unmount, 92 }; 93 94 95 VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK); 96 97 int nwfs_pbuf_freecnt = -1; /* start out unlimited */ 98 static int nwfsid = 1; 99 100 static int 101 nwfs_initnls(struct nwmount *nmp) { 102 char *pc, *pe; 103 int error = 0; 104 #define COPY_TABLE(t,d) { \ 105 if (t) { \ 106 error = copyin((t), pc, 256); \ 107 if (error) break; \ 108 } else \ 109 bcopy(d, pc, 256); \ 110 (t) = pc; pc += 256; \ 111 } 112 113 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS; 114 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) { 115 nmp->m.nls.to_lower = ncp_defnls.to_lower; 116 nmp->m.nls.to_upper = ncp_defnls.to_upper; 117 nmp->m.nls.n2u = ncp_defnls.n2u; 118 nmp->m.nls.u2n = ncp_defnls.u2n; 119 return 0; 120 } 121 MALLOC(pe, char *, 256 * 4, M_NWFSDATA, M_WAITOK); 122 pc = pe; 123 do { 124 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower); 125 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper); 126 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u); 127 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n); 128 } while(0); 129 if (error) { 130 free(pe, M_NWFSDATA); 131 return error; 132 } 133 return 0; 134 } 135 /* 136 * mp - path - addr in user space of mount point (ie /usr or whatever) 137 * data - addr in user space of mount params 138 */ 139 static int nwfs_omount(struct mount *mp, char *path, caddr_t data, 140 struct thread *td) 141 { 142 struct nwfs_args args; /* will hold data from mount request */ 143 int error; 144 struct nwmount *nmp = NULL; 145 struct ncp_conn *conn = NULL; 146 struct ncp_handle *handle = NULL; 147 struct vnode *vp; 148 char *pc,*pe; 149 150 if (data == NULL) { 151 nwfs_printf("missing data argument\n"); 152 return 1; 153 } 154 if (mp->mnt_flag & MNT_UPDATE) { 155 nwfs_printf("MNT_UPDATE not implemented"); 156 return (EOPNOTSUPP); 157 } 158 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args)); 159 if (error) 160 return (error); 161 if (args.version != NWFS_VERSION) { 162 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version); 163 return (1); 164 } 165 error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn); 166 if (error) { 167 nwfs_printf("invalid connection refernce %d\n",args.connRef); 168 return (error); 169 } 170 error = ncp_conn_gethandle(conn, NULL, &handle); 171 if (error) { 172 nwfs_printf("can't get connection handle\n"); 173 return (error); 174 } 175 ncp_conn_unlock(conn, td); /* we keep the ref */ 176 mp->mnt_stat.f_iosize = conn->buffer_size; 177 /* We must malloc our own mount info */ 178 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA, 179 M_WAITOK | M_USE_RESERVE | M_ZERO); 180 if (nmp == NULL) { 181 nwfs_printf("could not alloc nwmount\n"); 182 error = ENOMEM; 183 goto bad; 184 } 185 mp->mnt_data = (qaddr_t)nmp; 186 nmp->connh = handle; 187 nmp->n_root = NULL; 188 nmp->n_id = nwfsid++; 189 nmp->m = args; 190 nmp->m.file_mode = (nmp->m.file_mode & 191 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG; 192 nmp->m.dir_mode = (nmp->m.dir_mode & 193 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR; 194 if ((error = nwfs_initnls(nmp)) != 0) goto bad; 195 pc = mp->mnt_stat.f_mntfromname; 196 pe = pc+sizeof(mp->mnt_stat.f_mntfromname); 197 bzero(pc, MNAMELEN); 198 *(pc++) = '/'; 199 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0); 200 if (pc < pe-1) { 201 *(pc++) = ':'; 202 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0); 203 if (pc < pe-1) { 204 *(pc++) = '/'; 205 strncpy(pc, nmp->m.mounted_vol, pe-pc-2); 206 } 207 } 208 /* protect against invalid mount points */ 209 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0'; 210 vfs_getnewfsid(mp); 211 error = nwfs_root(mp, &vp, td); 212 if (error) 213 goto bad; 214 /* 215 * Lose the lock but keep the ref. 216 */ 217 VOP_UNLOCK(vp, 0, curthread); 218 NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp)); 219 return error; 220 bad: 221 if (nmp) 222 free(nmp, M_NWFSDATA); 223 if (handle) 224 ncp_conn_puthandle(handle, NULL, 0); 225 return error; 226 } 227 228 /* Unmount the filesystem described by mp. */ 229 static int 230 nwfs_unmount(struct mount *mp, int mntflags, struct thread *td) 231 { 232 struct nwmount *nmp = VFSTONWFS(mp); 233 struct ncp_conn *conn; 234 int error, flags; 235 236 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags); 237 flags = 0; 238 if (mntflags & MNT_FORCE) 239 flags |= FORCECLOSE; 240 /* There is 1 extra root vnode reference from nwfs_mount(). */ 241 error = vflush(mp, 1, flags, td); 242 if (error) 243 return (error); 244 conn = NWFSTOCONN(nmp); 245 ncp_conn_puthandle(nmp->connh,NULL,0); 246 if (ncp_conn_lock(conn, td, td->td_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) { 247 if(ncp_conn_free(conn)) 248 ncp_conn_unlock(conn, td); 249 } 250 mp->mnt_data = (qaddr_t)0; 251 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS) 252 free(nmp->m.nls.to_lower, M_NWFSDATA); 253 free(nmp, M_NWFSDATA); 254 mp->mnt_flag &= ~MNT_LOCAL; 255 return (error); 256 } 257 258 /* Return locked vnode to root of a filesystem */ 259 static int 260 nwfs_root(struct mount *mp, struct vnode **vpp, struct thread *td) { 261 struct vnode *vp; 262 struct nwmount *nmp; 263 struct nwnode *np; 264 struct ncp_conn *conn; 265 struct nw_entry_info fattr; 266 struct ucred *cred = td->td_ucred; 267 int error, nsf, opt; 268 u_char vol; 269 270 nmp = VFSTONWFS(mp); 271 conn = NWFSTOCONN(nmp); 272 if (nmp->n_root) { 273 *vpp = NWTOV(nmp->n_root); 274 while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0) 275 ; 276 return 0; 277 } 278 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol, 279 &nmp->n_rootent.f_id, td, cred); 280 if (error) 281 return ENOENT; 282 nmp->n_volume = vol; 283 error = ncp_get_namespaces(conn, vol, &nsf, td, cred); 284 if (error) 285 return ENOENT; 286 if (nsf & NW_NSB_OS2) { 287 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol); 288 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) { 289 nmp->name_space = NW_NS_OS2; 290 nmp->m.nls.opt &= ~NWHP_DOS; 291 } 292 } 293 opt = nmp->m.nls.opt; 294 nsf = opt & (NWHP_UPPER | NWHP_LOWER); 295 if (opt & NWHP_DOS) { 296 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 297 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 298 } else if (nsf == 0) { 299 nmp->m.nls.opt |= NWHP_LOWER; 300 } 301 } else { 302 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 303 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 304 } 305 } 306 if (nmp->m.root_path[0]) { 307 nmp->m.root_path[0]--; 308 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 309 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred); 310 if (error) { 311 NCPFATAL("Invalid root path specified\n"); 312 return ENOENT; 313 } 314 nmp->n_rootent.f_parent = fattr.dirEntNum; 315 nmp->m.root_path[0]++; 316 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 317 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred); 318 if (error) { 319 NCPFATAL("Invalid root path specified\n"); 320 return ENOENT; 321 } 322 nmp->n_rootent.f_id = fattr.dirEntNum; 323 } else { 324 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 325 0, NULL, &fattr, td, cred); 326 if (error) { 327 NCPFATAL("Can't obtain volume info\n"); 328 return ENOENT; 329 } 330 fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT")); 331 nmp->n_rootent.f_parent = nmp->n_rootent.f_id; 332 } 333 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp); 334 if (error) 335 return (error); 336 vp->v_vflag |= VV_ROOT; 337 np = VTONW(vp); 338 if (nmp->m.root_path[0] == 0) 339 np->n_flag |= NVOLUME; 340 nmp->n_root = np; 341 /* error = VOP_GETATTR(vp, &vattr, cred, td); 342 if (error) { 343 vput(vp); 344 NCPFATAL("Can't get root directory entry\n"); 345 return error; 346 }*/ 347 *vpp = vp; 348 return (0); 349 } 350 351 /* 352 * Vfs start routine, a no-op. 353 */ 354 /* ARGSUSED */ 355 static int 356 nwfs_start(mp, flags, td) 357 struct mount *mp; 358 int flags; 359 struct thread *td; 360 { 361 NCPVODEBUG("flags=%04x\n",flags); 362 return (0); 363 } 364 365 /* 366 * Do operations associated with quotas, not supported 367 */ 368 /* ARGSUSED */ 369 static int 370 nwfs_quotactl(mp, cmd, uid, arg, td) 371 struct mount *mp; 372 int cmd; 373 uid_t uid; 374 caddr_t arg; 375 struct thread *td; 376 { 377 NCPVODEBUG("return EOPNOTSUPP\n"); 378 return (EOPNOTSUPP); 379 } 380 381 /*ARGSUSED*/ 382 int 383 nwfs_init(struct vfsconf *vfsp) 384 { 385 nwfs_hash_init(); 386 nwfs_pbuf_freecnt = nswbuf / 2 + 1; 387 NCPVODEBUG("always happy to load!\n"); 388 return (0); 389 } 390 391 /*ARGSUSED*/ 392 int 393 nwfs_uninit(struct vfsconf *vfsp) 394 { 395 396 nwfs_hash_free(); 397 NCPVODEBUG("unloaded\n"); 398 return (0); 399 } 400 401 /* 402 * nwfs_statfs call 403 */ 404 int 405 nwfs_statfs(mp, sbp, td) 406 struct mount *mp; 407 struct statfs *sbp; 408 struct thread *td; 409 { 410 struct nwmount *nmp = VFSTONWFS(mp); 411 int error = 0, secsize; 412 struct nwnode *np = nmp->n_root; 413 struct ncp_volume_info vi; 414 415 if (np == NULL) return EINVAL; 416 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), 417 nmp->n_volume, &vi, td, td->td_ucred); 418 if (error) return error; 419 secsize = 512; /* XXX how to get real value ??? */ 420 /* fundamental filesystem block size */ 421 sbp->f_bsize = vi.sectors_per_block*secsize; 422 /* optimal transfer block size */ 423 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size; 424 /* total data blocks in filesystem */ 425 sbp->f_blocks= vi.total_blocks; 426 /* free blocks in fs */ 427 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks; 428 /* free blocks avail to non-superuser */ 429 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks; 430 /* total file nodes in filesystem */ 431 sbp->f_files = vi.total_dir_entries; 432 /* free file nodes in fs */ 433 sbp->f_ffree = vi.available_dir_entries; 434 sbp->f_flags = 0; /* copy of mount exported flags */ 435 if (sbp != &mp->mnt_stat) { 436 sbp->f_fsid = mp->mnt_stat.f_fsid; /* filesystem id */ 437 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */ 438 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */ 439 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 440 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 441 } 442 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN); 443 return 0; 444 }
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