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: releng/8.0/sys/fs/nwfs/nwfs_vfsops.c 191990 2009-05-11 15:33:26Z attilio $
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/proc.h>
38 #include <sys/kernel.h>
39 #include <sys/sysctl.h>
40 #include <sys/vnode.h>
41 #include <sys/mount.h>
42 #include <sys/stat.h>
43 #include <sys/malloc.h>
44 #include <sys/bio.h>
45 #include <sys/buf.h>
46
47 #include <netncp/ncp.h>
48 #include <netncp/ncp_conn.h>
49 #include <netncp/ncp_subr.h>
50 #include <netncp/ncp_ncp.h>
51 #include <netncp/ncp_nls.h>
52
53 #include <fs/nwfs/nwfs.h>
54 #include <fs/nwfs/nwfs_node.h>
55 #include <fs/nwfs/nwfs_subr.h>
56
57 int nwfs_debuglevel = 0;
58
59 static int nwfs_version = NWFS_VERSION;
60
61 SYSCTL_DECL(_vfs_nwfs);
62 SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware filesystem");
63 SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, "");
64 SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, "");
65
66 MODULE_DEPEND(nwfs, ncp, 1, 1, 1);
67 MODULE_DEPEND(nwfs, libmchain, 1, 1, 1);
68
69 static vfs_cmount_t nwfs_cmount;
70 static vfs_mount_t nwfs_mount;
71 static vfs_quotactl_t nwfs_quotactl;
72 static vfs_root_t nwfs_root;
73 static vfs_statfs_t nwfs_statfs;
74 static vfs_unmount_t nwfs_unmount;
75 static vfs_init_t nwfs_init;
76 static vfs_uninit_t nwfs_uninit;
77
78 static struct vfsops nwfs_vfsops = {
79 .vfs_init = nwfs_init,
80 .vfs_mount = nwfs_mount,
81 .vfs_cmount = nwfs_cmount,
82 .vfs_quotactl = nwfs_quotactl,
83 .vfs_root = nwfs_root,
84 .vfs_statfs = nwfs_statfs,
85 .vfs_sync = vfs_stdsync,
86 .vfs_uninit = nwfs_uninit,
87 .vfs_unmount = nwfs_unmount,
88 };
89
90
91 VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK);
92
93 int nwfs_pbuf_freecnt = -1; /* start out unlimited */
94 static int nwfsid = 1;
95
96 static int
97 nwfs_initnls(struct nwmount *nmp) {
98 char *pc, *pe;
99 int error = 0;
100 #define COPY_TABLE(t,d) { \
101 if (t) { \
102 error = copyin((t), pc, 256); \
103 if (error) break; \
104 } else \
105 bcopy(d, pc, 256); \
106 (t) = pc; pc += 256; \
107 }
108
109 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS;
110 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) {
111 nmp->m.nls.to_lower = ncp_defnls.to_lower;
112 nmp->m.nls.to_upper = ncp_defnls.to_upper;
113 nmp->m.nls.n2u = ncp_defnls.n2u;
114 nmp->m.nls.u2n = ncp_defnls.u2n;
115 return 0;
116 }
117 pe = malloc(256 * 4, M_NWFSDATA, M_WAITOK);
118 pc = pe;
119 do {
120 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower);
121 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper);
122 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u);
123 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n);
124 } while(0);
125 if (error) {
126 free(pe, M_NWFSDATA);
127 return error;
128 }
129 return 0;
130 }
131
132 static int nwfs_cmount(struct mntarg *ma, void *data, int flags)
133 {
134 struct nwfs_args args; /* will hold data from mount request */
135 int error;
136
137 error = copyin(data, &args, sizeof(struct nwfs_args));
138 if (error)
139 return (error);
140
141 /*
142 * XXX: cheap cop-out here, args contains a structure I don't
143 * XXX: know how we should handle, and I don't see any immediate
144 * XXX: prospect of avoiding a mount_nwfs(8) binary anyway.
145 */
146 ma = mount_arg(ma, "nwfs_args", &args, sizeof args);
147
148 error = kernel_mount(ma, flags);
149
150 return (error);
151 }
152
153 /*
154 * mp - path - addr in user space of mount point (ie /usr or whatever)
155 * data - addr in user space of mount params
156 */
157 static int nwfs_mount(struct mount *mp)
158 {
159 struct nwfs_args args; /* will hold data from mount request */
160 int error;
161 struct nwmount *nmp = NULL;
162 struct ncp_conn *conn = NULL;
163 struct ncp_handle *handle = NULL;
164 struct vnode *vp;
165 struct thread *td;
166 char *pc,*pe;
167
168 td = curthread;
169 if (mp->mnt_flag & MNT_ROOTFS)
170 return (EOPNOTSUPP);
171 if (mp->mnt_flag & MNT_UPDATE) {
172 nwfs_printf("MNT_UPDATE not implemented");
173 return (EOPNOTSUPP);
174 }
175 error = vfs_copyopt(mp->mnt_optnew, "nwfs_args", &args, sizeof args);
176 if (error)
177 return (error);
178 if (args.version != NWFS_VERSION) {
179 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version);
180 return (1);
181 }
182 error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn);
183 if (error) {
184 nwfs_printf("invalid connection refernce %d\n",args.connRef);
185 return (error);
186 }
187 error = ncp_conn_gethandle(conn, NULL, &handle);
188 if (error) {
189 nwfs_printf("can't get connection handle\n");
190 return (error);
191 }
192 ncp_conn_unlock(conn, td); /* we keep the ref */
193 mp->mnt_stat.f_iosize = conn->buffer_size;
194 /* We must malloc our own mount info */
195 nmp = malloc(sizeof(struct nwmount),M_NWFSDATA,
196 M_WAITOK | M_USE_RESERVE | M_ZERO);
197 if (nmp == NULL) {
198 nwfs_printf("could not alloc nwmount\n");
199 error = ENOMEM;
200 goto bad;
201 }
202 mp->mnt_data = nmp;
203 nmp->connh = handle;
204 nmp->n_root = NULL;
205 nmp->n_id = nwfsid++;
206 nmp->m = args;
207 nmp->m.file_mode = (nmp->m.file_mode &
208 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
209 nmp->m.dir_mode = (nmp->m.dir_mode &
210 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
211 if ((error = nwfs_initnls(nmp)) != 0) goto bad;
212 pc = mp->mnt_stat.f_mntfromname;
213 pe = pc+sizeof(mp->mnt_stat.f_mntfromname);
214 bzero(pc, MNAMELEN);
215 *(pc++) = '/';
216 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0);
217 if (pc < pe-1) {
218 *(pc++) = ':';
219 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0);
220 if (pc < pe-1) {
221 *(pc++) = '/';
222 strncpy(pc, nmp->m.mounted_vol, pe-pc-2);
223 }
224 }
225 /* protect against invalid mount points */
226 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0';
227 vfs_getnewfsid(mp);
228 error = nwfs_root(mp, LK_EXCLUSIVE, &vp);
229 if (error)
230 goto bad;
231 /*
232 * Lose the lock but keep the ref.
233 */
234 VOP_UNLOCK(vp, 0);
235 NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp));
236 return error;
237 bad:
238 if (nmp)
239 free(nmp, M_NWFSDATA);
240 if (handle)
241 ncp_conn_puthandle(handle, NULL, 0);
242 return error;
243 }
244
245 /* Unmount the filesystem described by mp. */
246 static int
247 nwfs_unmount(struct mount *mp, int mntflags)
248 {
249 struct thread *td;
250 struct nwmount *nmp = VFSTONWFS(mp);
251 struct ncp_conn *conn;
252 int error, flags;
253
254 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags);
255 td = curthread;
256 flags = 0;
257 if (mntflags & MNT_FORCE)
258 flags |= FORCECLOSE;
259 /* There is 1 extra root vnode reference from nwfs_mount(). */
260 error = vflush(mp, 1, flags, td);
261 if (error)
262 return (error);
263 conn = NWFSTOCONN(nmp);
264 ncp_conn_puthandle(nmp->connh,NULL,0);
265 if (ncp_conn_lock(conn, td, td->td_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) {
266 if(ncp_conn_free(conn))
267 ncp_conn_unlock(conn, td);
268 }
269 mp->mnt_data = NULL;
270 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS)
271 free(nmp->m.nls.to_lower, M_NWFSDATA);
272 free(nmp, M_NWFSDATA);
273 MNT_ILOCK(mp);
274 mp->mnt_flag &= ~MNT_LOCAL;
275 MNT_IUNLOCK(mp);
276 return (error);
277 }
278
279 /* Return locked vnode to root of a filesystem */
280 static int
281 nwfs_root(struct mount *mp, int flags, struct vnode **vpp) {
282 struct vnode *vp;
283 struct nwmount *nmp;
284 struct nwnode *np;
285 struct ncp_conn *conn;
286 struct nw_entry_info fattr;
287 struct thread *td;
288 struct ucred *cred;
289 int error, nsf, opt;
290 u_char vol;
291
292 td = curthread;
293 cred = td->td_ucred;
294
295 nmp = VFSTONWFS(mp);
296 conn = NWFSTOCONN(nmp);
297 if (nmp->n_root) {
298 *vpp = NWTOV(nmp->n_root);
299 while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0)
300 ;
301 return 0;
302 }
303 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol,
304 &nmp->n_rootent.f_id, td, cred);
305 if (error)
306 return ENOENT;
307 nmp->n_volume = vol;
308 error = ncp_get_namespaces(conn, vol, &nsf, td, cred);
309 if (error)
310 return ENOENT;
311 if (nsf & NW_NSB_OS2) {
312 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol);
313 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) {
314 nmp->name_space = NW_NS_OS2;
315 nmp->m.nls.opt &= ~NWHP_DOS;
316 }
317 }
318 opt = nmp->m.nls.opt;
319 nsf = opt & (NWHP_UPPER | NWHP_LOWER);
320 if (opt & NWHP_DOS) {
321 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
322 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
323 } else if (nsf == 0) {
324 nmp->m.nls.opt |= NWHP_LOWER;
325 }
326 } else {
327 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
328 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
329 }
330 }
331 if (nmp->m.root_path[0]) {
332 nmp->m.root_path[0]--;
333 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
334 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
335 if (error) {
336 NCPFATAL("Invalid root path specified\n");
337 return ENOENT;
338 }
339 nmp->n_rootent.f_parent = fattr.dirEntNum;
340 nmp->m.root_path[0]++;
341 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
342 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
343 if (error) {
344 NCPFATAL("Invalid root path specified\n");
345 return ENOENT;
346 }
347 nmp->n_rootent.f_id = fattr.dirEntNum;
348 } else {
349 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
350 0, NULL, &fattr, td, cred);
351 if (error) {
352 NCPFATAL("Can't obtain volume info\n");
353 return ENOENT;
354 }
355 fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT"));
356 nmp->n_rootent.f_parent = nmp->n_rootent.f_id;
357 }
358 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp);
359 if (error)
360 return (error);
361 vp->v_vflag |= VV_ROOT;
362 np = VTONW(vp);
363 if (nmp->m.root_path[0] == 0)
364 np->n_flag |= NVOLUME;
365 nmp->n_root = np;
366 /* error = VOP_GETATTR(vp, &vattr, cred, td);
367 if (error) {
368 vput(vp);
369 NCPFATAL("Can't get root directory entry\n");
370 return error;
371 }*/
372 *vpp = vp;
373 return (0);
374 }
375
376 /*
377 * Do operations associated with quotas, not supported
378 */
379 /* ARGSUSED */
380 static int
381 nwfs_quotactl(mp, cmd, uid, arg)
382 struct mount *mp;
383 int cmd;
384 uid_t uid;
385 void *arg;
386 {
387 NCPVODEBUG("return EOPNOTSUPP\n");
388 return (EOPNOTSUPP);
389 }
390
391 /*ARGSUSED*/
392 int
393 nwfs_init(struct vfsconf *vfsp)
394 {
395 nwfs_hash_init();
396 nwfs_pbuf_freecnt = nswbuf / 2 + 1;
397 NCPVODEBUG("always happy to load!\n");
398 return (0);
399 }
400
401 /*ARGSUSED*/
402 int
403 nwfs_uninit(struct vfsconf *vfsp)
404 {
405
406 nwfs_hash_free();
407 NCPVODEBUG("unloaded\n");
408 return (0);
409 }
410
411 /*
412 * nwfs_statfs call
413 */
414 int
415 nwfs_statfs(mp, sbp)
416 struct mount *mp;
417 struct statfs *sbp;
418 {
419 struct nwmount *nmp = VFSTONWFS(mp);
420 struct thread *td = curthread;
421 int error = 0, secsize;
422 struct nwnode *np = nmp->n_root;
423 struct ncp_volume_info vi;
424
425 if (np == NULL) return EINVAL;
426 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp),
427 nmp->n_volume, &vi, td, td->td_ucred);
428 if (error) return error;
429 secsize = 512; /* XXX how to get real value ??? */
430 /* fundamental filesystem block size */
431 sbp->f_bsize = vi.sectors_per_block*secsize;
432 /* optimal transfer block size */
433 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size;
434 /* total data blocks in filesystem */
435 sbp->f_blocks= vi.total_blocks;
436 /* free blocks in fs */
437 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks;
438 /* free blocks avail to non-superuser */
439 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks;
440 /* total file nodes in filesystem */
441 sbp->f_files = vi.total_dir_entries;
442 /* free file nodes in fs */
443 sbp->f_ffree = vi.available_dir_entries;
444 sbp->f_flags = 0; /* copy of mount exported flags */
445 return 0;
446 }
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