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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: releng/9.0/sys/fs/nwfs/nwfs_vfsops.c 213363 2010-10-02 17:58:57Z alc $
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/proc.h>
32 #include <sys/kernel.h>
33 #include <sys/sysctl.h>
34 #include <sys/vnode.h>
35 #include <sys/mount.h>
36 #include <sys/stat.h>
37 #include <sys/malloc.h>
38 #include <sys/bio.h>
39 #include <sys/buf.h>
40
41 #include <netncp/ncp.h>
42 #include <netncp/ncp_conn.h>
43 #include <netncp/ncp_subr.h>
44 #include <netncp/ncp_ncp.h>
45 #include <netncp/ncp_nls.h>
46
47 #include <fs/nwfs/nwfs.h>
48 #include <fs/nwfs/nwfs_node.h>
49 #include <fs/nwfs/nwfs_subr.h>
50
51 int nwfs_debuglevel = 0;
52
53 static int nwfs_version = NWFS_VERSION;
54
55 SYSCTL_DECL(_vfs_nwfs);
56 SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware filesystem");
57 SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, "");
58 SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, "");
59
60 MODULE_DEPEND(nwfs, ncp, 1, 1, 1);
61 MODULE_DEPEND(nwfs, libmchain, 1, 1, 1);
62
63 static vfs_cmount_t nwfs_cmount;
64 static vfs_mount_t nwfs_mount;
65 static vfs_quotactl_t nwfs_quotactl;
66 static vfs_root_t nwfs_root;
67 static vfs_statfs_t nwfs_statfs;
68 static vfs_unmount_t nwfs_unmount;
69 static vfs_init_t nwfs_init;
70 static vfs_uninit_t nwfs_uninit;
71
72 static struct vfsops nwfs_vfsops = {
73 .vfs_init = nwfs_init,
74 .vfs_mount = nwfs_mount,
75 .vfs_cmount = nwfs_cmount,
76 .vfs_quotactl = nwfs_quotactl,
77 .vfs_root = nwfs_root,
78 .vfs_statfs = nwfs_statfs,
79 .vfs_sync = vfs_stdsync,
80 .vfs_uninit = nwfs_uninit,
81 .vfs_unmount = nwfs_unmount,
82 };
83
84
85 VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK);
86
87 int nwfs_pbuf_freecnt = -1; /* start out unlimited */
88 static int nwfsid = 1;
89
90 static int
91 nwfs_initnls(struct nwmount *nmp) {
92 char *pc, *pe;
93 int error = 0;
94 #define COPY_TABLE(t,d) { \
95 if (t) { \
96 error = copyin((t), pc, 256); \
97 if (error) break; \
98 } else \
99 bcopy(d, pc, 256); \
100 (t) = pc; pc += 256; \
101 }
102
103 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS;
104 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) {
105 nmp->m.nls.to_lower = ncp_defnls.to_lower;
106 nmp->m.nls.to_upper = ncp_defnls.to_upper;
107 nmp->m.nls.n2u = ncp_defnls.n2u;
108 nmp->m.nls.u2n = ncp_defnls.u2n;
109 return 0;
110 }
111 pe = malloc(256 * 4, M_NWFSDATA, M_WAITOK);
112 pc = pe;
113 do {
114 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower);
115 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper);
116 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u);
117 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n);
118 } while(0);
119 if (error) {
120 free(pe, M_NWFSDATA);
121 return error;
122 }
123 return 0;
124 }
125
126 static int nwfs_cmount(struct mntarg *ma, void *data, int flags)
127 {
128 struct nwfs_args args; /* will hold data from mount request */
129 int error;
130
131 error = copyin(data, &args, sizeof(struct nwfs_args));
132 if (error)
133 return (error);
134
135 /*
136 * XXX: cheap cop-out here, args contains a structure I don't
137 * XXX: know how we should handle, and I don't see any immediate
138 * XXX: prospect of avoiding a mount_nwfs(8) binary anyway.
139 */
140 ma = mount_arg(ma, "nwfs_args", &args, sizeof args);
141
142 error = kernel_mount(ma, flags);
143
144 return (error);
145 }
146
147 /*
148 * mp - path - addr in user space of mount point (ie /usr or whatever)
149 * data - addr in user space of mount params
150 */
151 static int nwfs_mount(struct mount *mp)
152 {
153 struct nwfs_args args; /* will hold data from mount request */
154 int error;
155 struct nwmount *nmp = NULL;
156 struct ncp_conn *conn = NULL;
157 struct ncp_handle *handle = NULL;
158 struct vnode *vp;
159 struct thread *td;
160 char *pc,*pe;
161
162 td = curthread;
163 if (mp->mnt_flag & MNT_ROOTFS)
164 return (EOPNOTSUPP);
165 if (mp->mnt_flag & MNT_UPDATE) {
166 nwfs_printf("MNT_UPDATE not implemented");
167 return (EOPNOTSUPP);
168 }
169 error = vfs_copyopt(mp->mnt_optnew, "nwfs_args", &args, sizeof args);
170 if (error)
171 return (error);
172 if (args.version != NWFS_VERSION) {
173 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version);
174 return (1);
175 }
176 error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn);
177 if (error) {
178 nwfs_printf("invalid connection refernce %d\n",args.connRef);
179 return (error);
180 }
181 error = ncp_conn_gethandle(conn, NULL, &handle);
182 if (error) {
183 nwfs_printf("can't get connection handle\n");
184 return (error);
185 }
186 ncp_conn_unlock(conn, td); /* we keep the ref */
187 mp->mnt_stat.f_iosize = conn->buffer_size;
188 /* We must malloc our own mount info */
189 nmp = malloc(sizeof(struct nwmount), M_NWFSDATA, M_WAITOK | M_ZERO);
190 if (nmp == NULL) {
191 nwfs_printf("could not alloc nwmount\n");
192 error = ENOMEM;
193 goto bad;
194 }
195 mp->mnt_data = nmp;
196 nmp->connh = handle;
197 nmp->n_root = NULL;
198 nmp->n_id = nwfsid++;
199 nmp->m = args;
200 nmp->m.file_mode = (nmp->m.file_mode &
201 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
202 nmp->m.dir_mode = (nmp->m.dir_mode &
203 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
204 if ((error = nwfs_initnls(nmp)) != 0) goto bad;
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, LK_EXCLUSIVE, &vp);
222 if (error)
223 goto bad;
224 /*
225 * Lose the lock but keep the ref.
226 */
227 VOP_UNLOCK(vp, 0);
228 NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp));
229 return error;
230 bad:
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. */
239 static int
240 nwfs_unmount(struct mount *mp, int mntflags)
241 {
242 struct thread *td;
243 struct nwmount *nmp = VFSTONWFS(mp);
244 struct ncp_conn *conn;
245 int error, flags;
246
247 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags);
248 td = curthread;
249 flags = 0;
250 if (mntflags & MNT_FORCE)
251 flags |= FORCECLOSE;
252 /* There is 1 extra root vnode reference from nwfs_mount(). */
253 error = vflush(mp, 1, flags, td);
254 if (error)
255 return (error);
256 conn = NWFSTOCONN(nmp);
257 ncp_conn_puthandle(nmp->connh,NULL,0);
258 if (ncp_conn_lock(conn, td, td->td_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) {
259 if(ncp_conn_free(conn))
260 ncp_conn_unlock(conn, td);
261 }
262 mp->mnt_data = NULL;
263 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS)
264 free(nmp->m.nls.to_lower, M_NWFSDATA);
265 free(nmp, M_NWFSDATA);
266 MNT_ILOCK(mp);
267 mp->mnt_flag &= ~MNT_LOCAL;
268 MNT_IUNLOCK(mp);
269 return (error);
270 }
271
272 /* Return locked vnode to root of a filesystem */
273 static int
274 nwfs_root(struct mount *mp, int flags, struct vnode **vpp) {
275 struct vnode *vp;
276 struct nwmount *nmp;
277 struct nwnode *np;
278 struct ncp_conn *conn;
279 struct nw_entry_info fattr;
280 struct thread *td;
281 struct ucred *cred;
282 int error, nsf, opt;
283 u_char vol;
284
285 td = curthread;
286 cred = td->td_ucred;
287
288 nmp = VFSTONWFS(mp);
289 conn = NWFSTOCONN(nmp);
290 if (nmp->n_root) {
291 *vpp = NWTOV(nmp->n_root);
292 while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0)
293 ;
294 return 0;
295 }
296 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol,
297 &nmp->n_rootent.f_id, td, cred);
298 if (error)
299 return ENOENT;
300 nmp->n_volume = vol;
301 error = ncp_get_namespaces(conn, vol, &nsf, td, cred);
302 if (error)
303 return ENOENT;
304 if (nsf & NW_NSB_OS2) {
305 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol);
306 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) {
307 nmp->name_space = NW_NS_OS2;
308 nmp->m.nls.opt &= ~NWHP_DOS;
309 }
310 }
311 opt = nmp->m.nls.opt;
312 nsf = opt & (NWHP_UPPER | NWHP_LOWER);
313 if (opt & NWHP_DOS) {
314 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
315 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
316 } else if (nsf == 0) {
317 nmp->m.nls.opt |= NWHP_LOWER;
318 }
319 } else {
320 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
321 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
322 }
323 }
324 if (nmp->m.root_path[0]) {
325 nmp->m.root_path[0]--;
326 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
327 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
328 if (error) {
329 NCPFATAL("Invalid root path specified\n");
330 return ENOENT;
331 }
332 nmp->n_rootent.f_parent = fattr.dirEntNum;
333 nmp->m.root_path[0]++;
334 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
335 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
336 if (error) {
337 NCPFATAL("Invalid root path specified\n");
338 return ENOENT;
339 }
340 nmp->n_rootent.f_id = fattr.dirEntNum;
341 } else {
342 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
343 0, NULL, &fattr, td, cred);
344 if (error) {
345 NCPFATAL("Can't obtain volume info\n");
346 return ENOENT;
347 }
348 fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT"));
349 nmp->n_rootent.f_parent = nmp->n_rootent.f_id;
350 }
351 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp);
352 if (error)
353 return (error);
354 vp->v_vflag |= VV_ROOT;
355 np = VTONW(vp);
356 if (nmp->m.root_path[0] == 0)
357 np->n_flag |= NVOLUME;
358 nmp->n_root = np;
359 /* error = VOP_GETATTR(vp, &vattr, cred, td);
360 if (error) {
361 vput(vp);
362 NCPFATAL("Can't get root directory entry\n");
363 return error;
364 }*/
365 *vpp = vp;
366 return (0);
367 }
368
369 /*
370 * Do operations associated with quotas, not supported
371 */
372 /* ARGSUSED */
373 static int
374 nwfs_quotactl(mp, cmd, uid, arg)
375 struct mount *mp;
376 int cmd;
377 uid_t uid;
378 void *arg;
379 {
380 NCPVODEBUG("return EOPNOTSUPP\n");
381 return (EOPNOTSUPP);
382 }
383
384 /*ARGSUSED*/
385 int
386 nwfs_init(struct vfsconf *vfsp)
387 {
388 nwfs_hash_init();
389 nwfs_pbuf_freecnt = nswbuf / 2 + 1;
390 NCPVODEBUG("always happy to load!\n");
391 return (0);
392 }
393
394 /*ARGSUSED*/
395 int
396 nwfs_uninit(struct vfsconf *vfsp)
397 {
398
399 nwfs_hash_free();
400 NCPVODEBUG("unloaded\n");
401 return (0);
402 }
403
404 /*
405 * nwfs_statfs call
406 */
407 int
408 nwfs_statfs(mp, sbp)
409 struct mount *mp;
410 struct statfs *sbp;
411 {
412 struct nwmount *nmp = VFSTONWFS(mp);
413 struct thread *td = curthread;
414 int error = 0, secsize;
415 struct nwnode *np = nmp->n_root;
416 struct ncp_volume_info vi;
417
418 if (np == NULL) return EINVAL;
419 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp),
420 nmp->n_volume, &vi, td, td->td_ucred);
421 if (error) return error;
422 secsize = 512; /* XXX how to get real value ??? */
423 /* fundamental filesystem block size */
424 sbp->f_bsize = vi.sectors_per_block*secsize;
425 /* optimal transfer block size */
426 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size;
427 /* total data blocks in filesystem */
428 sbp->f_blocks= vi.total_blocks;
429 /* free blocks in fs */
430 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks;
431 /* free blocks avail to non-superuser */
432 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks;
433 /* total file nodes in filesystem */
434 sbp->f_files = vi.total_dir_entries;
435 /* free file nodes in fs */
436 sbp->f_ffree = vi.available_dir_entries;
437 sbp->f_flags = 0; /* copy of mount exported flags */
438 return 0;
439 }
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