nwfs_vfsops.c revision 54444
1/* 2 * Copyright (c) 1999, 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 54444 1999-12-11 16:13:02Z eivind $ 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/buf.h> 49 50#include <netncp/ncp.h> 51#include <netncp/ncp_conn.h> 52#include <netncp/ncp_subr.h> 53#include <netncp/ncp_ncp.h> 54#include <netncp/ncp_nls.h> 55 56#include <nwfs/nwfs.h> 57#include <nwfs/nwfs_node.h> 58#include <nwfs/nwfs_subr.h> 59 60int nwfs_debuglevel = 0; 61 62static int nwfs_version = NWFS_VERSION; 63 64SYSCTL_DECL(_vfs_nwfs); 65SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware file system"); 66SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, ""); 67SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, ""); 68 69static int nwfs_mount __P((struct mount *, char *, caddr_t, 70 struct nameidata *, struct proc *)); 71static int nwfs_quotactl __P((struct mount *, int, uid_t, caddr_t, 72 struct proc *)); 73static int nwfs_root __P((struct mount *, struct vnode **)); 74static int nwfs_start __P((struct mount *, int, struct proc *)); 75static int nwfs_statfs __P((struct mount *, struct statfs *, 76 struct proc *)); 77static int nwfs_sync __P((struct mount *, int, struct ucred *, 78 struct proc *)); 79static int nwfs_unmount __P((struct mount *, int, struct proc *)); 80static int nwfs_init __P((struct vfsconf *vfsp)); 81static int nwfs_uninit __P((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}; 98 99 100VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK); 101 102int nwfs_pbuf_freecnt = -1; /* start out unlimited */ 103static int nwfsid = 1; 104 105static int 106nwfs_initnls(struct nwmount *nmp) { 107 char *pc, *pe; 108 int error = 0; 109#define COPY_TABLE(t,d) { \ 110 if (t) { \ 111 error = copyin((t), pc, 256); \ 112 if (error) break; \ 113 } else \ 114 bcopy(d, pc, 256); \ 115 (t) = pc; pc += 256; \ 116 } 117 118 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS; 119 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) { 120 nmp->m.nls.to_lower = ncp_defnls.to_lower; 121 nmp->m.nls.to_upper = ncp_defnls.to_upper; 122 nmp->m.nls.n2u = ncp_defnls.n2u; 123 nmp->m.nls.u2n = ncp_defnls.u2n; 124 return 0; 125 } 126 MALLOC(pe, char *, 256 * 4, M_NWFSDATA, M_WAITOK); 127 if (pe == NULL) return ENOMEM; 128 pc = pe; 129 do { 130 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower); 131 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper); 132 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u); 133 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n); 134 } while(0); 135 if (error) { 136 free(pe, M_NWFSDATA); 137 return error; 138 } 139 return 0; 140} 141/* 142 * mp - path - addr in user space of mount point (ie /usr or whatever) 143 * data - addr in user space of mount params 144 */ 145static int nwfs_mount(struct mount *mp, char *path, caddr_t data, 146 struct nameidata *ndp, struct proc *p) 147{ 148 struct nwfs_args args; /* will hold data from mount request */ 149 size_t size; 150 int error; 151 struct nwmount *nmp = NULL; 152 struct ncp_conn *conn = NULL; 153 struct ncp_handle *handle = NULL; 154 struct vnode *vp; 155 char *pc,*pe; 156 157 if (data == NULL) { 158 nwfs_printf("missing data argument\n"); 159 return 1; 160 } 161 if (mp->mnt_flag & MNT_UPDATE) { 162 nwfs_printf("MNT_UPDATE not implemented"); 163 return (EOPNOTSUPP); 164 } 165 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args)); 166 if (error) 167 return (error); 168 if (args.version != NWFS_VERSION) { 169 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version); 170 return (1); 171 } 172 error = ncp_conn_getbyref(args.connRef,p,p->p_ucred,NCPM_EXECUTE,&conn); 173 if (error) { 174 nwfs_printf("invalid connection refernce %d\n",args.connRef); 175 return (error); 176 } 177 error = ncp_conn_gethandle(conn, NULL, &handle); 178 if (error) { 179 nwfs_printf("can't get connection handle\n"); 180 return (error); 181 } 182 ncp_conn_unlock(conn,p); /* we keep the ref */ 183 mp->mnt_stat.f_iosize = conn->buffer_size; 184 /* We must malloc our own mount info */ 185 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA,M_USE_RESERVE); 186 if (nmp == NULL) { 187 nwfs_printf("could not alloc nwmount\n"); 188 error = ENOMEM; 189 goto bad; 190 } 191 bzero(nmp,sizeof(*nmp)); 192 mp->mnt_data = (qaddr_t)nmp; 193 nmp->connh = handle; 194 nmp->n_root = NULL; 195 nmp->n_id = nwfsid++; 196 nmp->m = args; 197 nmp->m.file_mode = (nmp->m.file_mode & 198 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG; 199 nmp->m.dir_mode = (nmp->m.dir_mode & 200 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR; 201 if ((error = nwfs_initnls(nmp)) != 0) goto bad; 202 (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); 203 bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); 204 pc = mp->mnt_stat.f_mntfromname; 205 pe = pc+sizeof(mp->mnt_stat.f_mntfromname); 206 bzero(pc, MNAMELEN); 207 *(pc++) = '/'; 208 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0); 209 if (pc < pe-1) { 210 *(pc++) = ':'; 211 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0); 212 if (pc < pe-1) { 213 *(pc++) = '/'; 214 strncpy(pc, nmp->m.mounted_vol, pe-pc-2); 215 } 216 } 217 /* protect against invalid mount points */ 218 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0'; 219 vfs_getnewfsid(mp); 220 error = nwfs_root(mp, &vp); 221 if (error) 222 goto bad; 223 /* 224 * Lose the lock but keep the ref. 225 */ 226 VOP_UNLOCK(vp, 0, curproc); 227 NCPVODEBUG("rootvp.vrefcnt=%d\n",vp->v_usecount); 228 return error; 229bad: 230 if (nmp) 231 free(nmp, M_NWFSDATA); 232 if (handle) 233 ncp_conn_puthandle(handle, NULL, 0); 234 return error; 235} 236 237/* Unmount the filesystem described by mp. */ 238static int 239nwfs_unmount(struct mount *mp, int mntflags, struct proc *p) 240{ 241 struct nwmount *nmp = VFSTONWFS(mp); 242 struct ncp_conn *conn; 243 struct vnode *vp; 244 int error, flags; 245 246 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags); 247 flags = 0; 248 if (mntflags & MNT_FORCE) 249 flags |= FORCECLOSE; 250 error = VFS_ROOT(mp,&vp); 251 if (error) return (error); 252 if (vp->v_usecount > 2) { 253 printf("nwfs_unmount: usecnt=%d\n",vp->v_usecount); 254 vput(vp); 255 return (EBUSY); 256 } 257 error = vflush(mp, vp, flags); 258 if (error) { 259 vput(vp); 260 return (error); 261 } 262 /* 263 * There are two reference counts and one lock to get rid of here. 264 */ 265 NCPVODEBUG("v_use: %d\n",vp->v_usecount); 266 vput(vp); 267 NCPVODEBUG("v_use after vput: %d\n",vp->v_usecount); 268 vrele(vp); 269 NCPVODEBUG("v_use after vrele: %d\n",vp->v_usecount); 270 vgone(vp); 271 NCPVODEBUG("v_gone finished !!!!\n"); 272 conn = NWFSTOCONN(nmp); 273 ncp_conn_puthandle(nmp->connh,NULL,0); 274 if (ncp_conn_lock(conn,p,p->p_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) { 275 if(ncp_disconnect(conn)) 276 ncp_conn_unlock(conn,p); 277 } 278 mp->mnt_data = (qaddr_t)0; 279 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS) 280 free(nmp->m.nls.to_lower, M_NWFSDATA); 281 free(nmp, M_NWFSDATA); 282 mp->mnt_flag &= ~MNT_LOCAL; 283 return (error); 284} 285 286/* Return locked vnode to root of a filesystem */ 287static int 288nwfs_root(struct mount *mp, struct vnode **vpp) { 289 struct vnode *vp; 290 struct nwmount *nmp; 291 struct nwnode *np; 292 struct ncp_conn *conn; 293 struct nw_entry_info fattr; 294 struct proc *p = curproc; 295 struct ucred *cred = p->p_ucred; 296 int error, nsf, opt; 297 u_char vol; 298 299 nmp = VFSTONWFS(mp); 300 conn = NWFSTOCONN(nmp); 301 if (nmp->n_root) { 302 *vpp = NWTOV(nmp->n_root); 303 vget(*vpp, LK_EXCLUSIVE, curproc); 304 return 0; 305 } 306 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol, 307 &nmp->n_rootent.f_id, p, cred); 308 if (error) 309 return ENOENT; 310 nmp->n_volume = vol; 311 error = ncp_get_namespaces(conn, vol, &nsf, p, cred); 312 if (error) 313 return ENOENT; 314 if (nsf & NW_NSB_OS2) { 315 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol); 316 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) { 317 nmp->name_space = NW_NS_OS2; 318 nmp->m.nls.opt &= ~NWHP_DOS; 319 } 320 } 321 opt = nmp->m.nls.opt; 322 nsf = opt & (NWHP_UPPER | NWHP_LOWER); 323 if (opt & NWHP_DOS) { 324 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 325 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 326 } else if (nsf == 0) { 327 nmp->m.nls.opt |= NWHP_LOWER; 328 } 329 } else { 330 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 331 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 332 } 333 } 334 if (nmp->m.root_path[0]) { 335 nmp->m.root_path[0]--; 336 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 337 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred); 338 if (error) { 339 NCPFATAL("Invalid root path specified\n"); 340 return ENOENT; 341 } 342 nmp->n_rootent.f_parent = fattr.dirEntNum; 343 nmp->m.root_path[0]++; 344 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 345 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred); 346 if (error) { 347 NCPFATAL("Invalid root path specified\n"); 348 return ENOENT; 349 } 350 nmp->n_rootent.f_id = fattr.dirEntNum; 351 } else { 352 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 353 0, NULL, &fattr, p, cred); 354 if (error) { 355 NCPFATAL("Can't obtain volume info\n"); 356 return ENOENT; 357 } 358 fattr.nameLen = strlen(strcpy(fattr.entryName, NWFS_ROOTVOL)); 359 nmp->n_rootent.f_parent = nmp->n_rootent.f_id; 360 } 361 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp); 362 if (error) 363 return (error); 364 vp->v_flag |= VROOT; 365 np = VTONW(vp); 366 if (nmp->m.root_path[0] == 0) 367 np->n_flag |= NVOLUME; 368 nmp->n_root = np; 369/* error = VOP_GETATTR(vp, &vattr, cred, p); 370 if (error) { 371 vput(vp); 372 NCPFATAL("Can't get root directory entry\n"); 373 return error; 374 }*/ 375 *vpp = vp; 376 return (0); 377} 378 379/* 380 * Vfs start routine, a no-op. 381 */ 382/* ARGSUSED */ 383static int 384nwfs_start(mp, flags, p) 385 struct mount *mp; 386 int flags; 387 struct proc *p; 388{ 389 NCPVODEBUG("flags=%04x\n",flags); 390 return (0); 391} 392 393/* 394 * Do operations associated with quotas, not supported 395 */ 396/* ARGSUSED */ 397static int 398nwfs_quotactl(mp, cmd, uid, arg, p) 399 struct mount *mp; 400 int cmd; 401 uid_t uid; 402 caddr_t arg; 403 struct proc *p; 404{ 405 NCPVODEBUG("return EOPNOTSUPP\n"); 406 return (EOPNOTSUPP); 407} 408 409/*ARGSUSED*/ 410int 411nwfs_init(struct vfsconf *vfsp) 412{ 413 414 nwfs_hash_init(); 415 nwfs_pbuf_freecnt = nswbuf / 2 + 1; 416 NCPVODEBUG("always happy to load!\n"); 417 return (0); 418} 419 420/*ARGSUSED*/ 421int 422nwfs_uninit(struct vfsconf *vfsp) 423{ 424 425 nwfs_hash_free(); 426 NCPVODEBUG("unloaded\n"); 427 return (0); 428} 429 430/* 431 * nwfs_statfs call 432 */ 433int 434nwfs_statfs(mp, sbp, p) 435 struct mount *mp; 436 register struct statfs *sbp; 437 struct proc *p; 438{ 439 struct nwmount *nmp = VFSTONWFS(mp); 440 int error = 0, secsize; 441 struct nwnode *np = nmp->n_root; 442 struct ncp_volume_info vi; 443 444 if (np == NULL) return EINVAL; 445 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), nmp->n_volume, &vi,p,p->p_ucred); 446 if (error) return error; 447 secsize = 512; /* XXX how to get real value ??? */ 448 sbp->f_spare2=0; /* placeholder */ 449 /* fundamental file system block size */ 450 sbp->f_bsize = vi.sectors_per_block*secsize; 451 /* optimal transfer block size */ 452 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size; 453 /* total data blocks in file system */ 454 sbp->f_blocks= vi.total_blocks; 455 /* free blocks in fs */ 456 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks; 457 /* free blocks avail to non-superuser */ 458 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks; 459 /* total file nodes in file system */ 460 sbp->f_files = vi.total_dir_entries; 461 /* free file nodes in fs */ 462 sbp->f_ffree = vi.available_dir_entries; 463 sbp->f_flags = 0; /* copy of mount exported flags */ 464 if (sbp != &mp->mnt_stat) { 465 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */ 466 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */ 467 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */ 468 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 469 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 470 } 471 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN); 472 return 0; 473} 474 475/* 476 * Flush out the buffer cache 477 */ 478/* ARGSUSED */ 479static int 480nwfs_sync(mp, waitfor, cred, p) 481 struct mount *mp; 482 int waitfor; 483 struct ucred *cred; 484 struct proc *p; 485{ 486 register struct vnode *vp; 487 int error, allerror = 0; 488 /* 489 * Force stale buffer cache information to be flushed. 490 */ 491loop: 492 for (vp = mp->mnt_vnodelist.lh_first; 493 vp != NULL; 494 vp = vp->v_mntvnodes.le_next) { 495 /* 496 * If the vnode that we are about to sync is no longer 497 * associated with this mount point, start over. 498 */ 499 if (vp->v_mount != mp) 500 goto loop; 501 if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) || 502 waitfor == MNT_LAZY) 503 continue; 504 if (vget(vp, LK_EXCLUSIVE, p)) 505 goto loop; 506 error = VOP_FSYNC(vp, cred, waitfor, p); 507 if (error) 508 allerror = error; 509 vput(vp); 510 } 511 return (allerror); 512} 513