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/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
60 int nwfs_debuglevel = 0;
61
62 static int nwfs_version = NWFS_VERSION;
63
64 SYSCTL_DECL(_vfs_nwfs);
65 SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware file system");
66 SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, "");
67 SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, "");
68
69 static int nwfs_mount(struct mount *, char *, caddr_t,
70 struct nameidata *, struct proc *);
71 static int nwfs_quotactl(struct mount *, int, uid_t, caddr_t, struct proc *);
72 static int nwfs_root(struct mount *, struct vnode **);
73 static int nwfs_start(struct mount *, int, struct proc *);
74 static int nwfs_statfs(struct mount *, struct statfs *, struct proc *);
75 static int nwfs_sync(struct mount *, int, struct ucred *, struct proc *);
76 static int nwfs_unmount(struct mount *, int, struct proc *);
77 static int nwfs_init(struct vfsconf *vfsp);
78 static int nwfs_uninit(struct vfsconf *vfsp);
79
80 static struct vfsops nwfs_vfsops = {
81 nwfs_mount,
82 nwfs_start,
83 nwfs_unmount,
84 nwfs_root,
85 nwfs_quotactl,
86 nwfs_statfs,
87 nwfs_sync,
88 vfs_stdvget,
89 vfs_stdfhtovp, /* shouldn't happen */
90 vfs_stdcheckexp,
91 vfs_stdvptofh, /* shouldn't happen */
92 nwfs_init,
93 nwfs_uninit,
94 vfs_stdextattrctl,
95 };
96
97
98 VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK);
99
100 int nwfs_pbuf_freecnt = -1; /* start out unlimited */
101 static int nwfsid = 1;
102
103 static int
104 nwfs_initnls(struct nwmount *nmp) {
105 char *pc, *pe;
106 int error = 0;
107 #define COPY_TABLE(t,d) { \
108 if (t) { \
109 error = copyin((t), pc, 256); \
110 if (error) break; \
111 } else \
112 bcopy(d, pc, 256); \
113 (t) = pc; pc += 256; \
114 }
115
116 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS;
117 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) {
118 nmp->m.nls.to_lower = ncp_defnls.to_lower;
119 nmp->m.nls.to_upper = ncp_defnls.to_upper;
120 nmp->m.nls.n2u = ncp_defnls.n2u;
121 nmp->m.nls.u2n = ncp_defnls.u2n;
122 return 0;
123 }
124 MALLOC(pe, char *, 256 * 4, M_NWFSDATA, M_WAITOK);
125 pc = pe;
126 do {
127 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower);
128 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper);
129 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u);
130 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n);
131 } while(0);
132 if (error) {
133 free(pe, M_NWFSDATA);
134 return error;
135 }
136 return 0;
137 }
138 /*
139 * mp - path - addr in user space of mount point (ie /usr or whatever)
140 * data - addr in user space of mount params
141 */
142 static int nwfs_mount(struct mount *mp, char *path, caddr_t data,
143 struct nameidata *ndp, struct proc *p)
144 {
145 struct nwfs_args args; /* will hold data from mount request */
146 size_t size;
147 int error;
148 struct nwmount *nmp = NULL;
149 struct ncp_conn *conn = NULL;
150 struct ncp_handle *handle = NULL;
151 struct vnode *vp;
152 char *pc,*pe;
153
154 if (data == NULL) {
155 nwfs_printf("missing data argument\n");
156 return 1;
157 }
158 if (mp->mnt_flag & MNT_UPDATE) {
159 nwfs_printf("MNT_UPDATE not implemented");
160 return (EOPNOTSUPP);
161 }
162 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args));
163 if (error)
164 return (error);
165 if (args.version != NWFS_VERSION) {
166 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version);
167 return (1);
168 }
169 error = ncp_conn_getbyref(args.connRef,p,p->p_ucred,NCPM_EXECUTE,&conn);
170 if (error) {
171 nwfs_printf("invalid connection refernce %d\n",args.connRef);
172 return (error);
173 }
174 error = ncp_conn_gethandle(conn, NULL, &handle);
175 if (error) {
176 nwfs_printf("can't get connection handle\n");
177 return (error);
178 }
179 ncp_conn_unlock(conn,p); /* we keep the ref */
180 mp->mnt_stat.f_iosize = conn->buffer_size;
181 /* We must malloc our own mount info */
182 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA,M_USE_RESERVE | M_ZERO);
183 if (nmp == NULL) {
184 nwfs_printf("could not alloc nwmount\n");
185 error = ENOMEM;
186 goto bad;
187 }
188 mp->mnt_data = (qaddr_t)nmp;
189 nmp->connh = handle;
190 nmp->n_root = NULL;
191 nmp->n_id = nwfsid++;
192 nmp->m = args;
193 nmp->m.file_mode = (nmp->m.file_mode &
194 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
195 nmp->m.dir_mode = (nmp->m.dir_mode &
196 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
197 if ((error = nwfs_initnls(nmp)) != 0) goto bad;
198 (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
199 bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
200 pc = mp->mnt_stat.f_mntfromname;
201 pe = pc+sizeof(mp->mnt_stat.f_mntfromname);
202 bzero(pc, MNAMELEN);
203 *(pc++) = '/';
204 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0);
205 if (pc < pe-1) {
206 *(pc++) = ':';
207 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0);
208 if (pc < pe-1) {
209 *(pc++) = '/';
210 strncpy(pc, nmp->m.mounted_vol, pe-pc-2);
211 }
212 }
213 /* protect against invalid mount points */
214 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0';
215 vfs_getnewfsid(mp);
216 error = nwfs_root(mp, &vp);
217 if (error)
218 goto bad;
219 /*
220 * Lose the lock but keep the ref.
221 */
222 VOP_UNLOCK(vp, 0, curproc);
223 NCPVODEBUG("rootvp.vrefcnt=%d\n",vp->v_usecount);
224 return error;
225 bad:
226 if (nmp)
227 free(nmp, M_NWFSDATA);
228 if (handle)
229 ncp_conn_puthandle(handle, NULL, 0);
230 return error;
231 }
232
233 /* Unmount the filesystem described by mp. */
234 static int
235 nwfs_unmount(struct mount *mp, int mntflags, struct proc *p)
236 {
237 struct nwmount *nmp = VFSTONWFS(mp);
238 struct ncp_conn *conn;
239 int error, flags;
240
241 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags);
242 flags = 0;
243 if (mntflags & MNT_FORCE)
244 flags |= FORCECLOSE;
245 /* There is 1 extra root vnode reference from nwfs_mount(). */
246 error = vflush(mp, 1, flags);
247 if (error)
248 return (error);
249 conn = NWFSTOCONN(nmp);
250 ncp_conn_puthandle(nmp->connh,NULL,0);
251 if (ncp_conn_lock(conn,p,p->p_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) {
252 if(ncp_disconnect(conn))
253 ncp_conn_unlock(conn,p);
254 }
255 mp->mnt_data = (qaddr_t)0;
256 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS)
257 free(nmp->m.nls.to_lower, M_NWFSDATA);
258 free(nmp, M_NWFSDATA);
259 mp->mnt_flag &= ~MNT_LOCAL;
260 return (error);
261 }
262
263 /* Return locked vnode to root of a filesystem */
264 static int
265 nwfs_root(struct mount *mp, struct vnode **vpp) {
266 struct vnode *vp;
267 struct nwmount *nmp;
268 struct nwnode *np;
269 struct ncp_conn *conn;
270 struct nw_entry_info fattr;
271 struct proc *p = curproc;
272 struct ucred *cred = p->p_ucred;
273 int error, nsf, opt;
274 u_char vol;
275
276 nmp = VFSTONWFS(mp);
277 conn = NWFSTOCONN(nmp);
278 if (nmp->n_root) {
279 *vpp = NWTOV(nmp->n_root);
280 while (vget(*vpp, LK_EXCLUSIVE, curproc) != 0)
281 ;
282 return 0;
283 }
284 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol,
285 &nmp->n_rootent.f_id, p, cred);
286 if (error)
287 return ENOENT;
288 nmp->n_volume = vol;
289 error = ncp_get_namespaces(conn, vol, &nsf, p, cred);
290 if (error)
291 return ENOENT;
292 if (nsf & NW_NSB_OS2) {
293 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol);
294 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) {
295 nmp->name_space = NW_NS_OS2;
296 nmp->m.nls.opt &= ~NWHP_DOS;
297 }
298 }
299 opt = nmp->m.nls.opt;
300 nsf = opt & (NWHP_UPPER | NWHP_LOWER);
301 if (opt & NWHP_DOS) {
302 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
303 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
304 } else if (nsf == 0) {
305 nmp->m.nls.opt |= NWHP_LOWER;
306 }
307 } else {
308 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
309 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
310 }
311 }
312 if (nmp->m.root_path[0]) {
313 nmp->m.root_path[0]--;
314 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
315 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred);
316 if (error) {
317 NCPFATAL("Invalid root path specified\n");
318 return ENOENT;
319 }
320 nmp->n_rootent.f_parent = fattr.dirEntNum;
321 nmp->m.root_path[0]++;
322 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
323 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred);
324 if (error) {
325 NCPFATAL("Invalid root path specified\n");
326 return ENOENT;
327 }
328 nmp->n_rootent.f_id = fattr.dirEntNum;
329 } else {
330 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
331 0, NULL, &fattr, p, cred);
332 if (error) {
333 NCPFATAL("Can't obtain volume info\n");
334 return ENOENT;
335 }
336 fattr.nameLen = strlen(strcpy(fattr.entryName, NWFS_ROOTVOL));
337 nmp->n_rootent.f_parent = nmp->n_rootent.f_id;
338 }
339 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp);
340 if (error)
341 return (error);
342 vp->v_flag |= VROOT;
343 np = VTONW(vp);
344 if (nmp->m.root_path[0] == 0)
345 np->n_flag |= NVOLUME;
346 nmp->n_root = np;
347 /* error = VOP_GETATTR(vp, &vattr, cred, p);
348 if (error) {
349 vput(vp);
350 NCPFATAL("Can't get root directory entry\n");
351 return error;
352 }*/
353 *vpp = vp;
354 return (0);
355 }
356
357 /*
358 * Vfs start routine, a no-op.
359 */
360 /* ARGSUSED */
361 static int
362 nwfs_start(mp, flags, p)
363 struct mount *mp;
364 int flags;
365 struct proc *p;
366 {
367 NCPVODEBUG("flags=%04x\n",flags);
368 return (0);
369 }
370
371 /*
372 * Do operations associated with quotas, not supported
373 */
374 /* ARGSUSED */
375 static int
376 nwfs_quotactl(mp, cmd, uid, arg, p)
377 struct mount *mp;
378 int cmd;
379 uid_t uid;
380 caddr_t arg;
381 struct proc *p;
382 {
383 NCPVODEBUG("return EOPNOTSUPP\n");
384 return (EOPNOTSUPP);
385 }
386
387 /*ARGSUSED*/
388 int
389 nwfs_init(struct vfsconf *vfsp)
390 {
391 #ifndef SMP
392 size_t olen, plen;
393 int name[2];
394 int ncpu, error;
395
396 name[0] = CTL_HW;
397 name[1] = HW_NCPU;
398 olen = sizeof(ncpu);
399 error = kernel_sysctl(curproc, name, 2, &ncpu, &olen, NULL, 0, &plen);
400 if (error == 0 && ncpu > 1)
401 printf("warning: nwfs module compiled without SMP support.");
402 #endif
403 nwfs_hash_init();
404 nwfs_pbuf_freecnt = nswbuf / 2 + 1;
405 NCPVODEBUG("always happy to load!\n");
406 return (0);
407 }
408
409 /*ARGSUSED*/
410 int
411 nwfs_uninit(struct vfsconf *vfsp)
412 {
413
414 nwfs_hash_free();
415 NCPVODEBUG("unloaded\n");
416 return (0);
417 }
418
419 /*
420 * nwfs_statfs call
421 */
422 int
423 nwfs_statfs(mp, sbp, p)
424 struct mount *mp;
425 struct statfs *sbp;
426 struct proc *p;
427 {
428 struct nwmount *nmp = VFSTONWFS(mp);
429 int error = 0, secsize;
430 struct nwnode *np = nmp->n_root;
431 struct ncp_volume_info vi;
432
433 if (np == NULL) return EINVAL;
434 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), nmp->n_volume, &vi,p,p->p_ucred);
435 if (error) return error;
436 secsize = 512; /* XXX how to get real value ??? */
437 sbp->f_spare2=0; /* placeholder */
438 /* fundamental file system block size */
439 sbp->f_bsize = vi.sectors_per_block*secsize;
440 /* optimal transfer block size */
441 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size;
442 /* total data blocks in file system */
443 sbp->f_blocks= vi.total_blocks;
444 /* free blocks in fs */
445 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks;
446 /* free blocks avail to non-superuser */
447 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks;
448 /* total file nodes in file system */
449 sbp->f_files = vi.total_dir_entries;
450 /* free file nodes in fs */
451 sbp->f_ffree = vi.available_dir_entries;
452 sbp->f_flags = 0; /* copy of mount exported flags */
453 if (sbp != &mp->mnt_stat) {
454 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
455 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
456 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */
457 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
458 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
459 }
460 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
461 return 0;
462 }
463
464 /*
465 * Flush out the buffer cache
466 */
467 /* ARGSUSED */
468 static int
469 nwfs_sync(mp, waitfor, cred, p)
470 struct mount *mp;
471 int waitfor;
472 struct ucred *cred;
473 struct proc *p;
474 {
475 struct vnode *vp;
476 int error, allerror = 0;
477 /*
478 * Force stale buffer cache information to be flushed.
479 */
480 loop:
481 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
482 vp != NULL;
483 vp = TAILQ_NEXT(vp, v_nmntvnodes)) {
484 /*
485 * If the vnode that we are about to sync is no longer
486 * associated with this mount point, start over.
487 */
488 if (vp->v_mount != mp)
489 goto loop;
490 if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) ||
491 waitfor == MNT_LAZY)
492 continue;
493 if (vget(vp, LK_EXCLUSIVE, p))
494 goto loop;
495 error = VOP_FSYNC(vp, cred, waitfor, p);
496 if (error)
497 allerror = error;
498 vput(vp);
499 }
500 return (allerror);
501 }
Cache object: d7981585fb4d1b8bc1f23e06c2f85cce
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