GC local variable size.
[dragonfly.git] / sys / vfs / nwfs / nwfs_vfsops.c
CommitLineData
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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: src/sys/nwfs/nwfs_vfsops.c,v 1.6.2.6 2001/10/25 19:18:54 dillon Exp $
79bada53 33 * $DragonFly: src/sys/vfs/nwfs/nwfs_vfsops.c,v 1.16 2005/02/12 01:31:38 joerg Exp $
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34 */
35#include "opt_ncp.h"
36#ifndef NCP
37#error "NWFS requires NCP protocol"
38#endif
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/proc.h>
43#include <sys/kernel.h>
44#include <sys/sysctl.h>
45#include <sys/vnode.h>
46#include <sys/mount.h>
47#include <sys/stat.h>
48#include <sys/malloc.h>
49#include <sys/buf.h>
50
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51#include <netproto/ncp/ncp.h>
52#include <netproto/ncp/ncp_conn.h>
53#include <netproto/ncp/ncp_subr.h>
54#include <netproto/ncp/ncp_ncp.h>
55#include <netproto/ncp/ncp_nls.h>
984263bc 56
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57#include "nwfs.h"
58#include "nwfs_node.h"
59#include "nwfs_subr.h"
984263bc 60
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61extern struct vnodeopv_entry_desc nwfs_vnodeop_entries[];
62
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63int nwfs_debuglevel = 0;
64
65static int nwfs_version = NWFS_VERSION;
66
67SYSCTL_DECL(_vfs_nwfs);
68SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware file system");
69SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, "");
70SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, "");
71
21739618 72static int nwfs_mount(struct mount *, char *, caddr_t, struct thread *);
dadab5e9 73static int nwfs_quotactl(struct mount *, int, uid_t, caddr_t, struct thread *);
984263bc 74static int nwfs_root(struct mount *, struct vnode **);
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75static int nwfs_start(struct mount *, int, struct thread *);
76static int nwfs_statfs(struct mount *, struct statfs *, struct thread *);
3b568787 77static int nwfs_sync(struct mount *, int, struct thread *);
dadab5e9 78static int nwfs_unmount(struct mount *, int, struct thread *);
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79static int nwfs_init(struct vfsconf *vfsp);
80static int nwfs_uninit(struct vfsconf *vfsp);
81
82static struct vfsops nwfs_vfsops = {
83 nwfs_mount,
84 nwfs_start,
85 nwfs_unmount,
86 nwfs_root,
87 nwfs_quotactl,
88 nwfs_statfs,
89 nwfs_sync,
90 vfs_stdvget,
91 vfs_stdfhtovp, /* shouldn't happen */
92 vfs_stdcheckexp,
93 vfs_stdvptofh, /* shouldn't happen */
94 nwfs_init,
95 nwfs_uninit,
96 vfs_stdextattrctl,
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 pc = pe;
128 do {
129 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower);
130 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper);
131 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u);
132 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n);
133 } while(0);
134 if (error) {
135 free(pe, M_NWFSDATA);
136 return error;
137 }
138 return 0;
139}
140/*
141 * mp - path - addr in user space of mount point (ie /usr or whatever)
142 * data - addr in user space of mount params
143 */
a9bb80e0 144static int
21739618 145nwfs_mount(struct mount *mp, char *path, caddr_t data, struct thread *td)
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146{
147 struct nwfs_args args; /* will hold data from mount request */
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148 int error;
149 struct nwmount *nmp = NULL;
150 struct ncp_conn *conn = NULL;
151 struct ncp_handle *handle = NULL;
152 struct vnode *vp;
153 char *pc,*pe;
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154 struct ucred *cred;
155
156 KKASSERT(td->td_proc);
157 cred = td->td_proc->p_ucred;
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158
159 if (data == NULL) {
160 nwfs_printf("missing data argument\n");
161 return 1;
162 }
163 if (mp->mnt_flag & MNT_UPDATE) {
164 nwfs_printf("MNT_UPDATE not implemented");
165 return (EOPNOTSUPP);
166 }
167 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args));
168 if (error)
169 return (error);
170 if (args.version != NWFS_VERSION) {
171 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version);
172 return (1);
173 }
dadab5e9 174 error = ncp_conn_getbyref(args.connRef,td,cred,NCPM_EXECUTE,&conn);
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175 if (error) {
176 nwfs_printf("invalid connection refernce %d\n",args.connRef);
177 return (error);
178 }
179 error = ncp_conn_gethandle(conn, NULL, &handle);
180 if (error) {
181 nwfs_printf("can't get connection handle\n");
182 return (error);
183 }
dadab5e9 184 ncp_conn_unlock(conn,td); /* we keep the ref */
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185 mp->mnt_stat.f_iosize = conn->buffer_size;
186 /* We must malloc our own mount info */
dc1fd4b3 187 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA, M_WAITOK|M_USE_RESERVE|M_ZERO);
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188 if (nmp == NULL) {
189 nwfs_printf("could not alloc nwmount\n");
190 error = ENOMEM;
191 goto bad;
192 }
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;
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203 pc = mp->mnt_stat.f_mntfromname;
204 pe = pc+sizeof(mp->mnt_stat.f_mntfromname);
205 bzero(pc, MNAMELEN);
206 *(pc++) = '/';
207 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0);
208 if (pc < pe-1) {
209 *(pc++) = ':';
210 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0);
211 if (pc < pe-1) {
212 *(pc++) = '/';
213 strncpy(pc, nmp->m.mounted_vol, pe-pc-2);
214 }
215 }
216 /* protect against invalid mount points */
217 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0';
0961aa92 218
6ddb7618 219 vfs_add_vnodeops(mp, &mp->mnt_vn_norm_ops, nwfs_vnodeop_entries);
0961aa92 220
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221 vfs_getnewfsid(mp);
222 error = nwfs_root(mp, &vp);
223 if (error)
224 goto bad;
225 /*
226 * Lose the lock but keep the ref.
227 */
5fd012e0 228 VOP_UNLOCK(vp, 0, curthread);
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229 NCPVODEBUG("rootvp.vrefcnt=%d\n",vp->v_usecount);
230 return error;
231bad:
232 if (nmp)
233 free(nmp, M_NWFSDATA);
234 if (handle)
235 ncp_conn_puthandle(handle, NULL, 0);
236 return error;
237}
238
239/* Unmount the filesystem described by mp. */
240static int
dadab5e9 241nwfs_unmount(struct mount *mp, int mntflags, struct thread *td)
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242{
243 struct nwmount *nmp = VFSTONWFS(mp);
244 struct ncp_conn *conn;
245 int error, flags;
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246 struct ucred *cred;
247
248 KKASSERT(td->td_proc);
249 cred = td->td_proc->p_ucred;
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250
251 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags);
252 flags = 0;
253 if (mntflags & MNT_FORCE)
254 flags |= FORCECLOSE;
255 /* There is 1 extra root vnode reference from nwfs_mount(). */
256 error = vflush(mp, 1, flags);
257 if (error)
258 return (error);
259 conn = NWFSTOCONN(nmp);
260 ncp_conn_puthandle(nmp->connh,NULL,0);
dadab5e9 261 if (ncp_conn_lock(conn,td,cred,NCPM_WRITE | NCPM_EXECUTE) == 0) {
984263bc 262 if(ncp_disconnect(conn))
dadab5e9 263 ncp_conn_unlock(conn,td);
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264 }
265 mp->mnt_data = (qaddr_t)0;
266 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS)
267 free(nmp->m.nls.to_lower, M_NWFSDATA);
268 free(nmp, M_NWFSDATA);
269 mp->mnt_flag &= ~MNT_LOCAL;
270 return (error);
271}
272
273/* Return locked vnode to root of a filesystem */
274static int
a9bb80e0
CP
275nwfs_root(struct mount *mp, struct vnode **vpp)
276{
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277 struct vnode *vp;
278 struct nwmount *nmp;
279 struct nwnode *np;
280 struct ncp_conn *conn;
281 struct nw_entry_info fattr;
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282 struct thread *td = curthread; /* XXX */
283 struct ucred *cred;
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284 int error, nsf, opt;
285 u_char vol;
286
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287 KKASSERT(td->td_proc);
288 cred = td->td_proc->p_ucred;
289
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290 nmp = VFSTONWFS(mp);
291 conn = NWFSTOCONN(nmp);
292 if (nmp->n_root) {
293 *vpp = NWTOV(nmp->n_root);
5fd012e0 294 while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0) /* XXX */
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295 ;
296 return 0;
297 }
298 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol,
dadab5e9 299 &nmp->n_rootent.f_id, td, cred);
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300 if (error)
301 return ENOENT;
302 nmp->n_volume = vol;
dadab5e9 303 error = ncp_get_namespaces(conn, vol, &nsf, td, cred);
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304 if (error)
305 return ENOENT;
306 if (nsf & NW_NSB_OS2) {
307 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol);
308 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) {
309 nmp->name_space = NW_NS_OS2;
310 nmp->m.nls.opt &= ~NWHP_DOS;
311 }
312 }
313 opt = nmp->m.nls.opt;
314 nsf = opt & (NWHP_UPPER | NWHP_LOWER);
315 if (opt & NWHP_DOS) {
316 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
317 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
318 } else if (nsf == 0) {
319 nmp->m.nls.opt |= NWHP_LOWER;
320 }
321 } else {
322 if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
323 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
324 }
325 }
326 if (nmp->m.root_path[0]) {
327 nmp->m.root_path[0]--;
328 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
dadab5e9 329 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
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330 if (error) {
331 NCPFATAL("Invalid root path specified\n");
332 return ENOENT;
333 }
334 nmp->n_rootent.f_parent = fattr.dirEntNum;
335 nmp->m.root_path[0]++;
336 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
dadab5e9 337 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
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338 if (error) {
339 NCPFATAL("Invalid root path specified\n");
340 return ENOENT;
341 }
342 nmp->n_rootent.f_id = fattr.dirEntNum;
343 } else {
344 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
dadab5e9 345 0, NULL, &fattr, td, cred);
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346 if (error) {
347 NCPFATAL("Can't obtain volume info\n");
348 return ENOENT;
349 }
350 fattr.nameLen = strlen(strcpy(fattr.entryName, NWFS_ROOTVOL));
351 nmp->n_rootent.f_parent = nmp->n_rootent.f_id;
352 }
353 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp);
354 if (error)
355 return (error);
356 vp->v_flag |= VROOT;
357 np = VTONW(vp);
358 if (nmp->m.root_path[0] == 0)
359 np->n_flag |= NVOLUME;
360 nmp->n_root = np;
dadab5e9 361/* error = VOP_GETATTR(vp, &vattr, cred, td);
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362 if (error) {
363 vput(vp);
364 NCPFATAL("Can't get root directory entry\n");
365 return error;
366 }*/
367 *vpp = vp;
368 return (0);
369}
370
371/*
372 * Vfs start routine, a no-op.
373 */
374/* ARGSUSED */
375static int
a9bb80e0 376nwfs_start(struct mount *mp, int flags, struct thread *td)
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377{
378 NCPVODEBUG("flags=%04x\n",flags);
379 return (0);
380}
381
382/*
383 * Do operations associated with quotas, not supported
384 */
385/* ARGSUSED */
386static int
a9bb80e0
CP
387nwfs_quotactl(struct mount *mp, int cmd, uid_t uid, caddr_t arg,
388 struct thread *td)
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389{
390 NCPVODEBUG("return EOPNOTSUPP\n");
391 return (EOPNOTSUPP);
392}
393
394/*ARGSUSED*/
395int
396nwfs_init(struct vfsconf *vfsp)
397{
398#ifndef SMP
399 int name[2];
400 int olen, ncpu, plen, error;
401
402 name[0] = CTL_HW;
403 name[1] = HW_NCPU;
41c20dac 404 error = kernel_sysctl(name, 2, &ncpu, &olen, NULL, 0, &plen);
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405 if (error == 0 && ncpu > 1)
406 printf("warning: nwfs module compiled without SMP support.");
407#endif
408 nwfs_hash_init();
409 nwfs_pbuf_freecnt = nswbuf / 2 + 1;
410 NCPVODEBUG("always happy to load!\n");
411 return (0);
412}
413
414/*ARGSUSED*/
415int
416nwfs_uninit(struct vfsconf *vfsp)
417{
418
419 nwfs_hash_free();
420 NCPVODEBUG("unloaded\n");
421 return (0);
422}
423
424/*
425 * nwfs_statfs call
426 */
427int
a9bb80e0 428nwfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
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429{
430 struct nwmount *nmp = VFSTONWFS(mp);
431 int error = 0, secsize;
432 struct nwnode *np = nmp->n_root;
433 struct ncp_volume_info vi;
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434 struct ucred *cred;
435
436 KKASSERT(td->td_proc);
437 cred = td->td_proc->p_ucred;
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438
439 if (np == NULL) return EINVAL;
dadab5e9 440 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), nmp->n_volume, &vi,td,cred);
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441 if (error) return error;
442 secsize = 512; /* XXX how to get real value ??? */
443 sbp->f_spare2=0; /* placeholder */
444 /* fundamental file system block size */
445 sbp->f_bsize = vi.sectors_per_block*secsize;
446 /* optimal transfer block size */
447 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size;
448 /* total data blocks in file system */
449 sbp->f_blocks= vi.total_blocks;
450 /* free blocks in fs */
451 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks;
452 /* free blocks avail to non-superuser */
453 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks;
454 /* total file nodes in file system */
455 sbp->f_files = vi.total_dir_entries;
456 /* free file nodes in fs */
457 sbp->f_ffree = vi.available_dir_entries;
458 sbp->f_flags = 0; /* copy of mount exported flags */
459 if (sbp != &mp->mnt_stat) {
460 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
461 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
462 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */
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463 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
464 }
465 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
466 return 0;
467}
468
469/*
470 * Flush out the buffer cache
471 */
472/* ARGSUSED */
473static int
a9bb80e0 474nwfs_sync(struct mount *mp, int waitfor, struct thread *td)
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475{
476 struct vnode *vp;
477 int error, allerror = 0;
478 /*
479 * Force stale buffer cache information to be flushed.
480 */
481loop:
482 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
483 vp != NULL;
484 vp = TAILQ_NEXT(vp, v_nmntvnodes)) {
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485 if (vp->v_flag & VPLACEMARKER) /* ZZZ */
486 continue;
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487 /*
488 * If the vnode that we are about to sync is no longer
489 * associated with this mount point, start over.
490 */
491 if (vp->v_mount != mp)
492 goto loop;
493 if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) ||
494 waitfor == MNT_LAZY)
495 continue;
5fd012e0 496 if (vget(vp, LK_EXCLUSIVE, td))
984263bc 497 goto loop;
5fd012e0 498 /* XXX vp may not be retained */
3b568787 499 error = VOP_FSYNC(vp, waitfor, td);
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500 if (error)
501 allerror = error;
502 vput(vp);
503 }
504 return (allerror);
505}