nwfs_vfsops.c revision 66539
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: head/sys/fs/nwfs/nwfs_vfsops.c 66539 2000-10-02 09:29:59Z bp $ 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 <nwfs/nwfs.h> 58#include <nwfs/nwfs_node.h> 59#include <nwfs/nwfs_subr.h> 60 61int nwfs_debuglevel = 0; 62 63static int nwfs_version = NWFS_VERSION; 64 65SYSCTL_DECL(_vfs_nwfs); 66SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware file system"); 67SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, ""); 68SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, ""); 69 70MODULE_DEPEND(nwfs, ncp, 1, 1, 1); 71 72static int nwfs_mount(struct mount *, char *, caddr_t, 73 struct nameidata *, struct proc *); 74static int nwfs_quotactl(struct mount *, int, uid_t, caddr_t, struct proc *); 75static int nwfs_root(struct mount *, struct vnode **); 76static int nwfs_start(struct mount *, int, struct proc *); 77static int nwfs_statfs(struct mount *, struct statfs *, struct proc *); 78static int nwfs_sync(struct mount *, int, struct ucred *, struct proc *); 79static int nwfs_unmount(struct mount *, int, struct proc *); 80static int nwfs_init(struct vfsconf *vfsp); 81static int nwfs_uninit(struct vfsconf *vfsp); 82 83static struct vfsops nwfs_vfsops = { 84 nwfs_mount, 85 nwfs_start, 86 nwfs_unmount, 87 nwfs_root, 88 nwfs_quotactl, 89 nwfs_statfs, 90 nwfs_sync, 91 vfs_stdvget, 92 vfs_stdfhtovp, /* shouldn't happen */ 93 vfs_stdcheckexp, 94 vfs_stdvptofh, /* shouldn't happen */ 95 nwfs_init, 96 nwfs_uninit, 97 vfs_stdextattrctl, 98}; 99 100 101VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK); 102 103int nwfs_pbuf_freecnt = -1; /* start out unlimited */ 104static int nwfsid = 1; 105 106static int 107nwfs_initnls(struct nwmount *nmp) { 108 char *pc, *pe; 109 int error = 0; 110#define COPY_TABLE(t,d) { \ 111 if (t) { \ 112 error = copyin((t), pc, 256); \ 113 if (error) break; \ 114 } else \ 115 bcopy(d, pc, 256); \ 116 (t) = pc; pc += 256; \ 117 } 118 119 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS; 120 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) { 121 nmp->m.nls.to_lower = ncp_defnls.to_lower; 122 nmp->m.nls.to_upper = ncp_defnls.to_upper; 123 nmp->m.nls.n2u = ncp_defnls.n2u; 124 nmp->m.nls.u2n = ncp_defnls.u2n; 125 return 0; 126 } 127 MALLOC(pe, char *, 256 * 4, M_NWFSDATA, M_WAITOK); 128 if (pe == NULL) return ENOMEM; 129 pc = pe; 130 do { 131 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower); 132 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper); 133 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u); 134 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n); 135 } while(0); 136 if (error) { 137 free(pe, M_NWFSDATA); 138 return error; 139 } 140 return 0; 141} 142/* 143 * mp - path - addr in user space of mount point (ie /usr or whatever) 144 * data - addr in user space of mount params 145 */ 146static int nwfs_mount(struct mount *mp, char *path, caddr_t data, 147 struct nameidata *ndp, struct proc *p) 148{ 149 struct nwfs_args args; /* will hold data from mount request */ 150 size_t size; 151 int error; 152 struct nwmount *nmp = NULL; 153 struct ncp_conn *conn = NULL; 154 struct ncp_handle *handle = NULL; 155 struct vnode *vp; 156 char *pc,*pe; 157 158 if (data == NULL) { 159 nwfs_printf("missing data argument\n"); 160 return 1; 161 } 162 if (mp->mnt_flag & MNT_UPDATE) { 163 nwfs_printf("MNT_UPDATE not implemented"); 164 return (EOPNOTSUPP); 165 } 166 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args)); 167 if (error) 168 return (error); 169 if (args.version != NWFS_VERSION) { 170 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version); 171 return (1); 172 } 173 error = ncp_conn_getbyref(args.connRef,p,p->p_ucred,NCPM_EXECUTE,&conn); 174 if (error) { 175 nwfs_printf("invalid connection refernce %d\n",args.connRef); 176 return (error); 177 } 178 error = ncp_conn_gethandle(conn, NULL, &handle); 179 if (error) { 180 nwfs_printf("can't get connection handle\n"); 181 return (error); 182 } 183 ncp_conn_unlock(conn,p); /* we keep the ref */ 184 mp->mnt_stat.f_iosize = conn->buffer_size; 185 /* We must malloc our own mount info */ 186 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA,M_USE_RESERVE); 187 if (nmp == NULL) { 188 nwfs_printf("could not alloc nwmount\n"); 189 error = ENOMEM; 190 goto bad; 191 } 192 bzero(nmp,sizeof(*nmp)); 193 mp->mnt_data = (qaddr_t)nmp; 194 nmp->connh = handle; 195 nmp->n_root = NULL; 196 nmp->n_id = nwfsid++; 197 nmp->m = args; 198 nmp->m.file_mode = (nmp->m.file_mode & 199 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG; 200 nmp->m.dir_mode = (nmp->m.dir_mode & 201 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR; 202 if ((error = nwfs_initnls(nmp)) != 0) goto bad; 203 (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); 204 bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); 205 pc = mp->mnt_stat.f_mntfromname; 206 pe = pc+sizeof(mp->mnt_stat.f_mntfromname); 207 bzero(pc, MNAMELEN); 208 *(pc++) = '/'; 209 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0); 210 if (pc < pe-1) { 211 *(pc++) = ':'; 212 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0); 213 if (pc < pe-1) { 214 *(pc++) = '/'; 215 strncpy(pc, nmp->m.mounted_vol, pe-pc-2); 216 } 217 } 218 /* protect against invalid mount points */ 219 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0'; 220 vfs_getnewfsid(mp); 221 error = nwfs_root(mp, &vp); 222 if (error) 223 goto bad; 224 /* 225 * Lose the lock but keep the ref. 226 */ 227 VOP_UNLOCK(vp, 0, curproc); 228 NCPVODEBUG("rootvp.vrefcnt=%d\n",vp->v_usecount); 229 return error; 230bad: 231 if (nmp) 232 free(nmp, M_NWFSDATA); 233 if (handle) 234 ncp_conn_puthandle(handle, NULL, 0); 235 return error; 236} 237 238/* Unmount the filesystem described by mp. */ 239static int 240nwfs_unmount(struct mount *mp, int mntflags, struct proc *p) 241{ 242 struct nwmount *nmp = VFSTONWFS(mp); 243 struct ncp_conn *conn; 244 struct vnode *vp; 245 int error, flags; 246 247 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags); 248 flags = 0; 249 if (mntflags & MNT_FORCE) 250 flags |= FORCECLOSE; 251 error = VFS_ROOT(mp,&vp); 252 if (error) return (error); 253 if (vp->v_usecount > 2) { 254 printf("nwfs_unmount: usecnt=%d\n",vp->v_usecount); 255 vput(vp); 256 return (EBUSY); 257 } 258 error = vflush(mp, vp, flags); 259 if (error) { 260 vput(vp); 261 return (error); 262 } 263 /* 264 * There are two reference counts and one lock to get rid of here. 265 */ 266 NCPVODEBUG("v_use: %d\n",vp->v_usecount); 267 vput(vp); 268 NCPVODEBUG("v_use after vput: %d\n",vp->v_usecount); 269 vrele(vp); 270 NCPVODEBUG("v_use after vrele: %d\n",vp->v_usecount); 271 vgone(vp); 272 NCPVODEBUG("v_gone finished !!!!\n"); 273 conn = NWFSTOCONN(nmp); 274 ncp_conn_puthandle(nmp->connh,NULL,0); 275 if (ncp_conn_lock(conn,p,p->p_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) { 276 if(ncp_disconnect(conn)) 277 ncp_conn_unlock(conn,p); 278 } 279 mp->mnt_data = (qaddr_t)0; 280 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS) 281 free(nmp->m.nls.to_lower, M_NWFSDATA); 282 free(nmp, M_NWFSDATA); 283 mp->mnt_flag &= ~MNT_LOCAL; 284 return (error); 285} 286 287/* Return locked vnode to root of a filesystem */ 288static int 289nwfs_root(struct mount *mp, struct vnode **vpp) { 290 struct vnode *vp; 291 struct nwmount *nmp; 292 struct nwnode *np; 293 struct ncp_conn *conn; 294 struct nw_entry_info fattr; 295 struct proc *p = curproc; 296 struct ucred *cred = p->p_ucred; 297 int error, nsf, opt; 298 u_char vol; 299 300 nmp = VFSTONWFS(mp); 301 conn = NWFSTOCONN(nmp); 302 if (nmp->n_root) { 303 *vpp = NWTOV(nmp->n_root); 304 vget(*vpp, LK_EXCLUSIVE, curproc); 305 return 0; 306 } 307 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol, 308 &nmp->n_rootent.f_id, p, cred); 309 if (error) 310 return ENOENT; 311 nmp->n_volume = vol; 312 error = ncp_get_namespaces(conn, vol, &nsf, p, cred); 313 if (error) 314 return ENOENT; 315 if (nsf & NW_NSB_OS2) { 316 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol); 317 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) { 318 nmp->name_space = NW_NS_OS2; 319 nmp->m.nls.opt &= ~NWHP_DOS; 320 } 321 } 322 opt = nmp->m.nls.opt; 323 nsf = opt & (NWHP_UPPER | NWHP_LOWER); 324 if (opt & NWHP_DOS) { 325 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 326 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 327 } else if (nsf == 0) { 328 nmp->m.nls.opt |= NWHP_LOWER; 329 } 330 } else { 331 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 332 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 333 } 334 } 335 if (nmp->m.root_path[0]) { 336 nmp->m.root_path[0]--; 337 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 338 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred); 339 if (error) { 340 NCPFATAL("Invalid root path specified\n"); 341 return ENOENT; 342 } 343 nmp->n_rootent.f_parent = fattr.dirEntNum; 344 nmp->m.root_path[0]++; 345 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 346 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred); 347 if (error) { 348 NCPFATAL("Invalid root path specified\n"); 349 return ENOENT; 350 } 351 nmp->n_rootent.f_id = fattr.dirEntNum; 352 } else { 353 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 354 0, NULL, &fattr, p, cred); 355 if (error) { 356 NCPFATAL("Can't obtain volume info\n"); 357 return ENOENT; 358 } 359 fattr.nameLen = strlen(strcpy(fattr.entryName, NWFS_ROOTVOL)); 360 nmp->n_rootent.f_parent = nmp->n_rootent.f_id; 361 } 362 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp); 363 if (error) 364 return (error); 365 vp->v_flag |= VROOT; 366 np = VTONW(vp); 367 if (nmp->m.root_path[0] == 0) 368 np->n_flag |= NVOLUME; 369 nmp->n_root = np; 370/* error = VOP_GETATTR(vp, &vattr, cred, p); 371 if (error) { 372 vput(vp); 373 NCPFATAL("Can't get root directory entry\n"); 374 return error; 375 }*/ 376 *vpp = vp; 377 return (0); 378} 379 380/* 381 * Vfs start routine, a no-op. 382 */ 383/* ARGSUSED */ 384static int 385nwfs_start(mp, flags, p) 386 struct mount *mp; 387 int flags; 388 struct proc *p; 389{ 390 NCPVODEBUG("flags=%04x\n",flags); 391 return (0); 392} 393 394/* 395 * Do operations associated with quotas, not supported 396 */ 397/* ARGSUSED */ 398static int 399nwfs_quotactl(mp, cmd, uid, arg, p) 400 struct mount *mp; 401 int cmd; 402 uid_t uid; 403 caddr_t arg; 404 struct proc *p; 405{ 406 NCPVODEBUG("return EOPNOTSUPP\n"); 407 return (EOPNOTSUPP); 408} 409 410/*ARGSUSED*/ 411int 412nwfs_init(struct vfsconf *vfsp) 413{ 414#ifndef SMP 415 int name[2]; 416 int olen, ncpu, plen, error; 417 418 name[0] = CTL_HW; 419 name[1] = HW_NCPU; 420 error = kernel_sysctl(curproc, name, 2, &ncpu, &olen, NULL, 0, &plen); 421 if (error == 0 && ncpu > 1) 422 printf("warning: nwfs module compiled without SMP support."); 423#endif 424 nwfs_hash_init(); 425 nwfs_pbuf_freecnt = nswbuf / 2 + 1; 426 NCPVODEBUG("always happy to load!\n"); 427 return (0); 428} 429 430/*ARGSUSED*/ 431int 432nwfs_uninit(struct vfsconf *vfsp) 433{ 434 435 nwfs_hash_free(); 436 NCPVODEBUG("unloaded\n"); 437 return (0); 438} 439 440/* 441 * nwfs_statfs call 442 */ 443int 444nwfs_statfs(mp, sbp, p) 445 struct mount *mp; 446 struct statfs *sbp; 447 struct proc *p; 448{ 449 struct nwmount *nmp = VFSTONWFS(mp); 450 int error = 0, secsize; 451 struct nwnode *np = nmp->n_root; 452 struct ncp_volume_info vi; 453 454 if (np == NULL) return EINVAL; 455 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), nmp->n_volume, &vi,p,p->p_ucred); 456 if (error) return error; 457 secsize = 512; /* XXX how to get real value ??? */ 458 sbp->f_spare2=0; /* placeholder */ 459 /* fundamental file system block size */ 460 sbp->f_bsize = vi.sectors_per_block*secsize; 461 /* optimal transfer block size */ 462 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size; 463 /* total data blocks in file system */ 464 sbp->f_blocks= vi.total_blocks; 465 /* free blocks in fs */ 466 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks; 467 /* free blocks avail to non-superuser */ 468 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks; 469 /* total file nodes in file system */ 470 sbp->f_files = vi.total_dir_entries; 471 /* free file nodes in fs */ 472 sbp->f_ffree = vi.available_dir_entries; 473 sbp->f_flags = 0; /* copy of mount exported flags */ 474 if (sbp != &mp->mnt_stat) { 475 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */ 476 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */ 477 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */ 478 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 479 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 480 } 481 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN); 482 return 0; 483} 484 485/* 486 * Flush out the buffer cache 487 */ 488/* ARGSUSED */ 489static int 490nwfs_sync(mp, waitfor, cred, p) 491 struct mount *mp; 492 int waitfor; 493 struct ucred *cred; 494 struct proc *p; 495{ 496 struct vnode *vp; 497 int error, allerror = 0; 498 /* 499 * Force stale buffer cache information to be flushed. 500 */ 501loop: 502 for (vp = mp->mnt_vnodelist.lh_first; 503 vp != NULL; 504 vp = vp->v_mntvnodes.le_next) { 505 /* 506 * If the vnode that we are about to sync is no longer 507 * associated with this mount point, start over. 508 */ 509 if (vp->v_mount != mp) 510 goto loop; 511 if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) || 512 waitfor == MNT_LAZY) 513 continue; 514 if (vget(vp, LK_EXCLUSIVE, p)) 515 goto loop; 516 error = VOP_FSYNC(vp, cred, waitfor, p); 517 if (error) 518 allerror = error; 519 vput(vp); 520 } 521 return (allerror); 522} 523