Line data Source code
1 : /* $OpenBSD: nfs_serv.c,v 1.116 2018/06/13 14:57:24 visa Exp $ */
2 : /* $NetBSD: nfs_serv.c,v 1.34 1997/05/12 23:37:12 fvdl Exp $ */
3 :
4 : /*
5 : * Copyright (c) 1989, 1993
6 : * The Regents of the University of California. All rights reserved.
7 : *
8 : * This code is derived from software contributed to Berkeley by
9 : * Rick Macklem at The University of Guelph.
10 : *
11 : * Redistribution and use in source and binary forms, with or without
12 : * modification, are permitted provided that the following conditions
13 : * are met:
14 : * 1. Redistributions of source code must retain the above copyright
15 : * notice, this list of conditions and the following disclaimer.
16 : * 2. Redistributions in binary form must reproduce the above copyright
17 : * notice, this list of conditions and the following disclaimer in the
18 : * documentation and/or other materials provided with the distribution.
19 : * 3. Neither the name of the University nor the names of its contributors
20 : * may be used to endorse or promote products derived from this software
21 : * without specific prior written permission.
22 : *
23 : * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 : * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 : * SUCH DAMAGE.
34 : *
35 : * @(#)nfs_serv.c 8.7 (Berkeley) 5/14/95
36 : */
37 :
38 : /*
39 : * nfs version 2 and 3 server calls to vnode ops
40 : * - these routines generally have 3 phases
41 : * 1 - break down and validate rpc request in mbuf list
42 : * 2 - do the vnode ops for the request
43 : * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
44 : * 3 - build the rpc reply in an mbuf list
45 : * nb:
46 : * - do not mix the phases, since the nfsm_?? macros can return failures
47 : * on a bad rpc or similar and do not do any vrele() or vput()'s
48 : *
49 : * - the nfsm_reply() macro generates an nfs rpc reply with the nfs
50 : * error number iff error != 0 whereas
51 : * returning an error from the server function implies a fatal error
52 : * such as a badly constructed rpc request that should be dropped without
53 : * a reply.
54 : * For Version 3, nfsm_reply() does not return for the error case, since
55 : * most version 3 rpcs return more than the status for error cases.
56 : */
57 :
58 : #include <sys/param.h>
59 : #include <sys/systm.h>
60 : #include <sys/proc.h>
61 : #include <sys/namei.h>
62 : #include <sys/vnode.h>
63 : #include <sys/lock.h>
64 : #include <sys/mount.h>
65 : #include <sys/socket.h>
66 : #include <sys/socketvar.h>
67 : #include <sys/mbuf.h>
68 : #include <sys/dirent.h>
69 : #include <sys/stat.h>
70 : #include <sys/kernel.h>
71 : #include <sys/pool.h>
72 : #include <sys/queue.h>
73 : #include <sys/unistd.h>
74 :
75 : #include <ufs/ufs/dir.h>
76 :
77 : #include <nfs/nfsproto.h>
78 : #include <nfs/nfs.h>
79 : #include <nfs/xdr_subs.h>
80 : #include <nfs/nfsm_subs.h>
81 : #include <nfs/nfs_var.h>
82 :
83 : /* Global vars */
84 : extern u_int32_t nfs_xdrneg1;
85 : extern u_int32_t nfs_false, nfs_true;
86 : extern enum vtype nv3tov_type[8];
87 : extern struct nfsstats nfsstats;
88 : extern nfstype nfsv2_type[9];
89 : extern nfstype nfsv3_type[9];
90 :
91 : int nfsrv_access(struct vnode *, int, struct ucred *, int, struct proc *, int);
92 :
93 : /*
94 : * nfs v3 access service
95 : */
96 : int
97 0 : nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
98 : struct proc *procp, struct mbuf **mrq)
99 : {
100 0 : struct mbuf *nam = nfsd->nd_nam;
101 0 : struct nfsm_info info;
102 0 : struct ucred *cred = &nfsd->nd_cr;
103 0 : struct vnode *vp;
104 0 : nfsfh_t nfh;
105 : fhandle_t *fhp;
106 : u_int32_t *tl;
107 : int32_t t1;
108 0 : int error = 0, rdonly, getret;
109 0 : char *cp2;
110 0 : struct vattr va;
111 : u_long testmode, nfsmode;
112 :
113 0 : info.nmi_mreq = NULL;
114 0 : info.nmi_mrep = nfsd->nd_mrep;
115 0 : info.nmi_md = nfsd->nd_md;
116 0 : info.nmi_dpos = nfsd->nd_dpos;
117 :
118 0 : fhp = &nfh.fh_generic;
119 0 : nfsm_srvmtofh(fhp);
120 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
121 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
122 0 : if (error) {
123 0 : nfsm_reply(NFSX_UNSIGNED);
124 0 : nfsm_srvpostop_attr(nfsd, 1, NULL, &info);
125 : error = 0;
126 0 : goto nfsmout;
127 : }
128 0 : nfsmode = fxdr_unsigned(u_int32_t, *tl);
129 0 : if ((nfsmode & NFSV3ACCESS_READ) &&
130 0 : nfsrv_access(vp, VREAD, cred, rdonly, procp, 0))
131 0 : nfsmode &= ~NFSV3ACCESS_READ;
132 0 : if (vp->v_type == VDIR)
133 0 : testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
134 : NFSV3ACCESS_DELETE);
135 : else
136 : testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
137 0 : if ((nfsmode & testmode) &&
138 0 : nfsrv_access(vp, VWRITE, cred, rdonly, procp, 0))
139 0 : nfsmode &= ~testmode;
140 0 : if (vp->v_type == VDIR)
141 0 : testmode = NFSV3ACCESS_LOOKUP;
142 : else
143 : testmode = NFSV3ACCESS_EXECUTE;
144 0 : if ((nfsmode & testmode) &&
145 0 : nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0))
146 0 : nfsmode &= ~testmode;
147 0 : getret = VOP_GETATTR(vp, &va, cred, procp);
148 0 : vput(vp);
149 0 : nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
150 0 : nfsm_srvpostop_attr(nfsd, getret, &va, &info);
151 0 : tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
152 0 : *tl = txdr_unsigned(nfsmode);
153 : nfsmout:
154 0 : return(error);
155 0 : }
156 :
157 : /*
158 : * nfs getattr service
159 : */
160 : int
161 0 : nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
162 : struct proc *procp, struct mbuf **mrq)
163 : {
164 0 : struct mbuf *nam = nfsd->nd_nam;
165 0 : struct nfsm_info info;
166 0 : struct ucred *cred = &nfsd->nd_cr;
167 : struct nfs_fattr *fp;
168 0 : struct vattr va;
169 0 : struct vnode *vp;
170 0 : nfsfh_t nfh;
171 : fhandle_t *fhp;
172 : u_int32_t *tl;
173 : int32_t t1;
174 0 : int error = 0, rdonly;
175 0 : char *cp2;
176 :
177 0 : info.nmi_mreq = NULL;
178 0 : info.nmi_mrep = nfsd->nd_mrep;
179 0 : info.nmi_md = nfsd->nd_md;
180 0 : info.nmi_dpos = nfsd->nd_dpos;
181 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
182 :
183 0 : fhp = &nfh.fh_generic;
184 0 : nfsm_srvmtofh(fhp);
185 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
186 0 : if (error) {
187 0 : nfsm_reply(0);
188 : error = 0;
189 0 : goto nfsmout;
190 : }
191 0 : error = VOP_GETATTR(vp, &va, cred, procp);
192 0 : vput(vp);
193 0 : nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
194 0 : if (error) {
195 : error = 0;
196 0 : goto nfsmout;
197 : }
198 0 : fp = nfsm_build(&info.nmi_mb, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
199 0 : nfsm_srvfattr(nfsd, &va, fp);
200 : nfsmout:
201 0 : return(error);
202 0 : }
203 :
204 : /*
205 : * nfs setattr service
206 : */
207 : int
208 0 : nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
209 : struct proc *procp, struct mbuf **mrq)
210 : {
211 0 : struct mbuf *nam = nfsd->nd_nam;
212 0 : struct nfsm_info info;
213 0 : struct ucred *cred = &nfsd->nd_cr;
214 0 : struct vattr va, preat;
215 : struct nfsv2_sattr *sp;
216 : struct nfs_fattr *fp;
217 0 : struct vnode *vp;
218 0 : nfsfh_t nfh;
219 : fhandle_t *fhp;
220 : u_int32_t *tl;
221 : int32_t t1;
222 0 : int error = 0, rdonly, preat_ret = 1, postat_ret = 1;
223 : int gcheck = 0;
224 0 : char *cp2;
225 : struct timespec guard;
226 :
227 0 : info.nmi_mreq = NULL;
228 0 : info.nmi_mrep = nfsd->nd_mrep;
229 0 : info.nmi_md = nfsd->nd_md;
230 0 : info.nmi_dpos = nfsd->nd_dpos;
231 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
232 :
233 0 : fhp = &nfh.fh_generic;
234 0 : nfsm_srvmtofh(fhp);
235 0 : VATTR_NULL(&va);
236 0 : if (info.nmi_v3) {
237 0 : va.va_vaflags |= VA_UTIMES_NULL;
238 0 : error = nfsm_srvsattr(&info.nmi_md, &va, info.nmi_mrep, &info.nmi_dpos);
239 0 : if (error)
240 : goto nfsmout;
241 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
242 0 : gcheck = fxdr_unsigned(int, *tl);
243 0 : if (gcheck) {
244 0 : nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
245 0 : fxdr_nfsv3time(tl, &guard);
246 0 : }
247 : } else {
248 0 : nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
249 : /*
250 : * Nah nah nah nah na nah
251 : * There is a bug in the Sun client that puts 0xffff in the mode
252 : * field of sattr when it should put in 0xffffffff. The u_short
253 : * doesn't sign extend.
254 : * --> check the low order 2 bytes for 0xffff
255 : */
256 0 : if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
257 0 : va.va_mode = nfstov_mode(sp->sa_mode);
258 0 : if (sp->sa_uid != nfs_xdrneg1)
259 0 : va.va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
260 0 : if (sp->sa_gid != nfs_xdrneg1)
261 0 : va.va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
262 0 : if (sp->sa_size != nfs_xdrneg1)
263 0 : va.va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
264 0 : if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
265 : #ifdef notyet
266 : fxdr_nfsv2time(&sp->sa_atime, &va.va_atime);
267 : #else
268 0 : va.va_atime.tv_sec =
269 0 : fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec);
270 0 : va.va_atime.tv_nsec = 0;
271 : #endif
272 0 : }
273 0 : if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
274 0 : fxdr_nfsv2time(&sp->sa_mtime, &va.va_mtime);
275 :
276 : }
277 :
278 : /*
279 : * Now that we have all the fields, lets do it.
280 : */
281 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
282 0 : if (error) {
283 0 : nfsm_reply(2 * NFSX_UNSIGNED);
284 0 : nfsm_srvwcc(nfsd, preat_ret, &preat, postat_ret, &va, &info);
285 : error = 0;
286 0 : goto nfsmout;
287 : }
288 0 : if (info.nmi_v3) {
289 0 : error = preat_ret = VOP_GETATTR(vp, &preat, cred, procp);
290 0 : if (!error && gcheck &&
291 0 : (preat.va_ctime.tv_sec != guard.tv_sec ||
292 0 : preat.va_ctime.tv_nsec != guard.tv_nsec))
293 0 : error = NFSERR_NOT_SYNC;
294 0 : if (error) {
295 0 : vput(vp);
296 0 : nfsm_reply(NFSX_WCCDATA(info.nmi_v3));
297 0 : nfsm_srvwcc(nfsd, preat_ret, &preat, postat_ret, &va,
298 : &info);
299 : error = 0;
300 0 : goto nfsmout;
301 : }
302 : }
303 :
304 : /*
305 : * If the size is being changed write acces is required, otherwise
306 : * just check for a read only file system.
307 : */
308 0 : if (va.va_size == ((u_quad_t)((quad_t) -1))) {
309 0 : if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
310 : error = EROFS;
311 0 : goto out;
312 : }
313 : } else {
314 0 : if (vp->v_type == VDIR) {
315 : error = EISDIR;
316 0 : goto out;
317 0 : } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
318 0 : procp, 1)) != 0)
319 : goto out;
320 : }
321 0 : error = VOP_SETATTR(vp, &va, cred, procp);
322 0 : postat_ret = VOP_GETATTR(vp, &va, cred, procp);
323 0 : if (!error)
324 0 : error = postat_ret;
325 : out:
326 0 : vput(vp);
327 0 : nfsm_reply(NFSX_WCCORFATTR(info.nmi_v3));
328 0 : if (info.nmi_v3) {
329 0 : nfsm_srvwcc(nfsd, preat_ret, &preat, postat_ret, &va,
330 : &info);
331 : error = 0;
332 0 : goto nfsmout;
333 : } else {
334 0 : fp = nfsm_build(&info.nmi_mb, NFSX_V2FATTR);
335 0 : nfsm_srvfattr(nfsd, &va, fp);
336 : }
337 : nfsmout:
338 0 : return(error);
339 0 : }
340 :
341 : /*
342 : * nfs lookup rpc
343 : */
344 : int
345 0 : nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
346 : struct proc *procp, struct mbuf **mrq)
347 : {
348 0 : struct mbuf *nam = nfsd->nd_nam;
349 0 : struct ucred *cred = &nfsd->nd_cr;
350 : struct nfs_fattr *fp;
351 0 : struct nameidata nd;
352 0 : struct vnode *vp, *dirp;
353 0 : struct nfsm_info info;
354 0 : nfsfh_t nfh;
355 : fhandle_t *fhp;
356 : u_int32_t *tl;
357 : int32_t t1;
358 : int error = 0, len, dirattr_ret = 1;
359 0 : int v3 = (nfsd->nd_flag & ND_NFSV3);
360 0 : char *cp2;
361 0 : struct vattr va, dirattr;
362 :
363 0 : info.nmi_mrep = nfsd->nd_mrep;
364 0 : info.nmi_mreq = NULL;
365 0 : info.nmi_md = nfsd->nd_md;
366 0 : info.nmi_dpos = nfsd->nd_dpos;
367 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
368 :
369 0 : fhp = &nfh.fh_generic;
370 0 : nfsm_srvmtofh(fhp);
371 0 : nfsm_srvnamesiz(len);
372 :
373 0 : NDINIT(&nd, LOOKUP, LOCKLEAF | SAVESTART, UIO_SYSSPACE, NULL, procp);
374 0 : nd.ni_cnd.cn_cred = cred;
375 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md, &info.nmi_dpos, &dirp, procp);
376 0 : if (dirp) {
377 0 : if (info.nmi_v3)
378 0 : dirattr_ret = VOP_GETATTR(dirp, &dirattr, cred,
379 : procp);
380 0 : vrele(dirp);
381 0 : }
382 0 : if (error) {
383 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3));
384 0 : nfsm_srvpostop_attr(nfsd, dirattr_ret, &dirattr, &info);
385 0 : return (0);
386 : }
387 0 : vrele(nd.ni_startdir);
388 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
389 0 : vp = nd.ni_vp;
390 0 : memset(fhp, 0, sizeof(nfh));
391 0 : fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
392 0 : error = VFS_VPTOFH(vp, &fhp->fh_fid);
393 0 : if (!error)
394 0 : error = VOP_GETATTR(vp, &va, cred, procp);
395 0 : vput(vp);
396 0 : nfsm_reply(NFSX_SRVFH(info.nmi_v3) + NFSX_POSTOPORFATTR(info.nmi_v3)
397 : + NFSX_POSTOPATTR(info.nmi_v3));
398 0 : if (error) {
399 0 : nfsm_srvpostop_attr(nfsd, dirattr_ret, &dirattr, &info);
400 : error = 0;
401 0 : goto nfsmout;
402 : }
403 0 : nfsm_srvfhtom(&info.nmi_mb, fhp, info.nmi_v3);
404 0 : if (v3) {
405 0 : nfsm_srvpostop_attr(nfsd, 0, &va, &info);
406 0 : nfsm_srvpostop_attr(nfsd, dirattr_ret, &dirattr, &info);
407 0 : } else {
408 0 : fp = nfsm_build(&info.nmi_mb, NFSX_V2FATTR);
409 0 : nfsm_srvfattr(nfsd, &va, fp);
410 : }
411 : nfsmout:
412 0 : return(error);
413 0 : }
414 :
415 : /*
416 : * nfs readlink service
417 : */
418 : int
419 0 : nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
420 : struct proc *procp, struct mbuf **mrq)
421 : {
422 0 : struct mbuf *nam = nfsd->nd_nam;
423 0 : struct ucred *cred = &nfsd->nd_cr;
424 0 : struct iovec iov;
425 : struct mbuf *mp = NULL;
426 0 : struct nfsm_info info;
427 : u_int32_t *tl;
428 : int32_t t1;
429 0 : int error = 0, rdonly, tlen, len = 0, getret;
430 0 : char *cp2;
431 0 : struct vnode *vp;
432 0 : struct vattr attr;
433 0 : nfsfh_t nfh;
434 : fhandle_t *fhp;
435 0 : struct uio uio;
436 :
437 0 : info.nmi_mreq = NULL;
438 0 : info.nmi_mrep = nfsd->nd_mrep;
439 0 : info.nmi_md = nfsd->nd_md;
440 0 : info.nmi_dpos = nfsd->nd_dpos;
441 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
442 :
443 0 : memset(&uio, 0, sizeof(uio));
444 :
445 0 : fhp = &nfh.fh_generic;
446 0 : nfsm_srvmtofh(fhp);
447 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
448 0 : if (error) {
449 0 : nfsm_reply(2 * NFSX_UNSIGNED);
450 0 : nfsm_srvpostop_attr(nfsd, 1, NULL, &info);
451 : error = 0;
452 0 : goto nfsmout;
453 : }
454 0 : if (vp->v_type != VLNK) {
455 0 : if (info.nmi_v3)
456 0 : error = EINVAL;
457 : else
458 : error = ENXIO;
459 : goto out;
460 : }
461 :
462 0 : MGET(mp, M_WAIT, MT_DATA);
463 0 : MCLGET(mp, M_WAIT); /* MLEN < NFS_MAXPATHLEN < MCLBYTES */
464 0 : mp->m_len = NFS_MAXPATHLEN;
465 : len = NFS_MAXPATHLEN;
466 0 : iov.iov_base = mtod(mp, caddr_t);
467 0 : iov.iov_len = mp->m_len;
468 :
469 0 : uio.uio_iov = &iov;
470 0 : uio.uio_iovcnt = 1;
471 0 : uio.uio_offset = 0;
472 0 : uio.uio_resid = NFS_MAXPATHLEN;
473 0 : uio.uio_rw = UIO_READ;
474 0 : uio.uio_segflg = UIO_SYSSPACE;
475 0 : uio.uio_procp = NULL;
476 :
477 0 : error = VOP_READLINK(vp, &uio, cred);
478 : out:
479 0 : getret = VOP_GETATTR(vp, &attr, cred, procp);
480 0 : vput(vp);
481 0 : if (error)
482 0 : m_freem(mp);
483 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3) + NFSX_UNSIGNED);
484 0 : if (info.nmi_v3) {
485 0 : nfsm_srvpostop_attr(nfsd, getret, &attr, &info);
486 0 : if (error) {
487 : error = 0;
488 0 : goto nfsmout;
489 : }
490 : }
491 0 : if (uio.uio_resid > 0) {
492 0 : len -= uio.uio_resid;
493 0 : tlen = nfsm_rndup(len);
494 0 : nfsm_adj(mp, NFS_MAXPATHLEN-tlen, tlen-len);
495 0 : }
496 0 : tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
497 0 : *tl = txdr_unsigned(len);
498 0 : info.nmi_mb->m_next = mp;
499 :
500 : nfsmout:
501 0 : return (error);
502 0 : }
503 :
504 : /*
505 : * nfs read service
506 : */
507 : int
508 0 : nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
509 : struct proc *procp, struct mbuf **mrq)
510 : {
511 0 : struct mbuf *nam = nfsd->nd_nam;
512 0 : struct ucred *cred = &nfsd->nd_cr;
513 : struct mbuf *m;
514 : struct nfs_fattr *fp;
515 0 : struct nfsm_info info;
516 : u_int32_t *tl;
517 : int32_t t1;
518 : int i, reqlen;
519 0 : int error = 0, rdonly, cnt, len, left, siz, tlen, getret = 1;
520 0 : char *cp2;
521 : struct mbuf *m2;
522 0 : struct vnode *vp;
523 0 : nfsfh_t nfh;
524 : fhandle_t *fhp;
525 0 : struct uio io, *uiop = &io;
526 0 : struct vattr va;
527 : off_t off;
528 :
529 0 : info.nmi_mreq = NULL;
530 0 : info.nmi_mrep = nfsd->nd_mrep;
531 0 : info.nmi_md = nfsd->nd_md;
532 0 : info.nmi_dpos = nfsd->nd_dpos;
533 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
534 :
535 0 : fhp = &nfh.fh_generic;
536 0 : nfsm_srvmtofh(fhp);
537 0 : if (info.nmi_v3) {
538 0 : nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
539 0 : off = fxdr_hyper(tl);
540 0 : } else {
541 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
542 0 : off = (off_t)fxdr_unsigned(u_int32_t, *tl);
543 : }
544 :
545 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
546 0 : reqlen = fxdr_unsigned(int32_t, *tl);
547 0 : if (reqlen > (NFS_SRVMAXDATA(nfsd)) || reqlen <= 0) {
548 : error = EBADRPC;
549 0 : nfsm_reply(0);
550 : }
551 :
552 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
553 0 : if (error)
554 : goto bad;
555 :
556 0 : if (vp->v_type != VREG) {
557 0 : if (info.nmi_v3)
558 0 : error = EINVAL;
559 : else
560 0 : error = (vp->v_type == VDIR) ? EISDIR : EACCES;
561 : }
562 0 : if (!error) {
563 0 : if ((error = nfsrv_access(vp, VREAD, cred, rdonly, procp, 1)) != 0)
564 0 : error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 1);
565 : }
566 0 : getret = VOP_GETATTR(vp, &va, cred, procp);
567 0 : if (!error)
568 0 : error = getret;
569 0 : if (error)
570 : goto vbad;
571 :
572 0 : if (off >= va.va_size)
573 0 : cnt = 0;
574 0 : else if ((off + reqlen) > va.va_size)
575 0 : cnt = va.va_size - off;
576 : else
577 : cnt = reqlen;
578 0 : nfsm_reply(NFSX_POSTOPORFATTR(info.nmi_v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
579 0 : if (info.nmi_v3) {
580 0 : tl = nfsm_build(&info.nmi_mb, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
581 0 : *tl++ = nfs_true;
582 0 : fp = (struct nfs_fattr *)tl;
583 0 : tl += (NFSX_V3FATTR / sizeof (u_int32_t));
584 0 : } else {
585 0 : tl = nfsm_build(&info.nmi_mb, NFSX_V2FATTR + NFSX_UNSIGNED);
586 0 : fp = (struct nfs_fattr *)tl;
587 0 : tl += (NFSX_V2FATTR / sizeof (u_int32_t));
588 : }
589 0 : len = left = nfsm_rndup (cnt);
590 0 : if (cnt > 0) {
591 : struct iovec *iv, *iv2;
592 : size_t ivlen;
593 : /*
594 : * Generate the mbuf list with the uio_iov ref. to it.
595 : */
596 : i = 0;
597 0 : m = m2 = info.nmi_mb;
598 0 : while (left > 0) {
599 0 : siz = min(M_TRAILINGSPACE(m), left);
600 0 : if (siz > 0) {
601 0 : left -= siz;
602 0 : i++;
603 0 : }
604 0 : if (left > 0) {
605 0 : MGET(m, M_WAIT, MT_DATA);
606 0 : if (left >= MINCLSIZE)
607 0 : MCLGET(m, M_WAIT);
608 0 : m->m_len = 0;
609 0 : m2->m_next = m;
610 : m2 = m;
611 0 : }
612 : }
613 0 : iv = mallocarray(i, sizeof(*iv), M_TEMP, M_WAITOK);
614 0 : ivlen = i * sizeof(*iv);
615 0 : uiop->uio_iov = iv2 = iv;
616 0 : m = info.nmi_mb;
617 : left = len;
618 : i = 0;
619 0 : while (left > 0) {
620 0 : if (m == NULL)
621 0 : panic("nfsrv_read iov");
622 0 : siz = min(M_TRAILINGSPACE(m), left);
623 0 : if (siz > 0) {
624 0 : iv->iov_base = mtod(m, caddr_t) + m->m_len;
625 0 : iv->iov_len = siz;
626 0 : m->m_len += siz;
627 0 : left -= siz;
628 0 : iv++;
629 0 : i++;
630 0 : }
631 0 : m = m->m_next;
632 : }
633 0 : uiop->uio_iovcnt = i;
634 0 : uiop->uio_offset = off;
635 0 : uiop->uio_resid = len;
636 0 : uiop->uio_rw = UIO_READ;
637 0 : uiop->uio_segflg = UIO_SYSSPACE;
638 0 : error = VOP_READ(vp, uiop, IO_NODELOCKED, cred);
639 : off = uiop->uio_offset;
640 0 : free(iv2, M_TEMP, ivlen);
641 0 : if (error || (getret = VOP_GETATTR(vp, &va, cred, procp)) != 0){
642 0 : if (!error)
643 0 : error = getret;
644 0 : m_freem(info.nmi_mreq);
645 0 : goto vbad;
646 : }
647 0 : } else
648 0 : uiop->uio_resid = 0;
649 0 : vput(vp);
650 0 : nfsm_srvfattr(nfsd, &va, fp);
651 0 : tlen = len - uiop->uio_resid;
652 0 : cnt = cnt < tlen ? cnt : tlen;
653 0 : tlen = nfsm_rndup (cnt);
654 0 : if (len != tlen || tlen != cnt)
655 0 : nfsm_adj(info.nmi_mb, len - tlen, tlen - cnt);
656 0 : if (info.nmi_v3) {
657 0 : *tl++ = txdr_unsigned(cnt);
658 0 : if (len < reqlen)
659 0 : *tl++ = nfs_true;
660 : else
661 0 : *tl++ = nfs_false;
662 : }
663 0 : *tl = txdr_unsigned(cnt);
664 : nfsmout:
665 0 : return(error);
666 :
667 : vbad:
668 0 : vput(vp);
669 : bad:
670 0 : nfsm_reply(0);
671 0 : nfsm_srvpostop_attr(nfsd, getret, &va, &info);
672 0 : return (0);
673 0 : }
674 :
675 : /*
676 : * nfs write service
677 : */
678 : int
679 0 : nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
680 : struct proc *procp, struct mbuf **mrq)
681 : {
682 0 : struct mbuf *nam = nfsd->nd_nam;
683 0 : struct ucred *cred = &nfsd->nd_cr;
684 0 : struct nfsm_info info;
685 : int i, cnt;
686 : struct mbuf *mp;
687 : struct nfs_fattr *fp;
688 0 : struct vattr va, forat;
689 : u_int32_t *tl;
690 : int32_t t1;
691 0 : int error = 0, rdonly, len, forat_ret = 1;
692 : int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
693 : int stable = NFSV3WRITE_FILESYNC;
694 0 : char *cp2;
695 0 : struct vnode *vp;
696 0 : nfsfh_t nfh;
697 : fhandle_t *fhp;
698 0 : struct uio io, *uiop = &io;
699 : off_t off;
700 :
701 0 : info.nmi_mreq = NULL;
702 0 : info.nmi_mrep = nfsd->nd_mrep;
703 0 : info.nmi_md = nfsd->nd_md;
704 0 : info.nmi_dpos = nfsd->nd_dpos;
705 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
706 :
707 0 : if (info.nmi_mrep == NULL) {
708 0 : *mrq = NULL;
709 0 : return (0);
710 : }
711 0 : fhp = &nfh.fh_generic;
712 0 : nfsm_srvmtofh(fhp);
713 0 : if (info.nmi_v3) {
714 0 : nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
715 0 : off = fxdr_hyper(tl);
716 0 : tl += 3;
717 0 : stable = fxdr_unsigned(int, *tl++);
718 0 : } else {
719 0 : nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
720 0 : off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
721 0 : tl += 2;
722 : }
723 0 : retlen = len = fxdr_unsigned(int32_t, *tl);
724 : cnt = i = 0;
725 :
726 : /*
727 : * For NFS Version 2, it is not obvious what a write of zero length
728 : * should do, but I might as well be consistent with Version 3,
729 : * which is to return ok so long as there are no permission problems.
730 : */
731 0 : if (len > 0) {
732 : zeroing = 1;
733 0 : mp = info.nmi_mrep;
734 0 : while (mp) {
735 0 : if (mp == info.nmi_md) {
736 : zeroing = 0;
737 0 : adjust = info.nmi_dpos - mtod(mp, caddr_t);
738 0 : mp->m_len -= adjust;
739 0 : if (mp->m_len > 0 && adjust > 0)
740 0 : mp->m_data += adjust;
741 : }
742 0 : if (zeroing)
743 0 : mp->m_len = 0;
744 0 : else if (mp->m_len > 0) {
745 0 : i += mp->m_len;
746 0 : if (i > len) {
747 0 : mp->m_len -= (i - len);
748 : zeroing = 1;
749 0 : }
750 0 : if (mp->m_len > 0)
751 0 : cnt++;
752 : }
753 0 : mp = mp->m_next;
754 : }
755 : }
756 0 : if (len > NFS_MAXDATA || len < 0 || i < len) {
757 : error = EIO;
758 0 : goto bad;
759 : }
760 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
761 0 : if (error)
762 : goto bad;
763 0 : if (info.nmi_v3)
764 0 : forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
765 0 : if (vp->v_type != VREG) {
766 0 : if (info.nmi_v3)
767 0 : error = EINVAL;
768 : else
769 0 : error = (vp->v_type == VDIR) ? EISDIR : EACCES;
770 : goto vbad;
771 : }
772 0 : error = nfsrv_access(vp, VWRITE, cred, rdonly, procp, 1);
773 0 : if (error)
774 : goto vbad;
775 :
776 0 : if (len > 0) {
777 : struct iovec *iv, *ivp;
778 : size_t ivlen;
779 :
780 0 : ivp = mallocarray(cnt, sizeof(*ivp), M_TEMP, M_WAITOK);
781 0 : ivlen = cnt * sizeof(*ivp);
782 0 : uiop->uio_iov = iv = ivp;
783 0 : uiop->uio_iovcnt = cnt;
784 0 : mp = info.nmi_mrep;
785 0 : while (mp) {
786 0 : if (mp->m_len > 0) {
787 0 : ivp->iov_base = mtod(mp, caddr_t);
788 0 : ivp->iov_len = mp->m_len;
789 0 : ivp++;
790 0 : }
791 0 : mp = mp->m_next;
792 : }
793 :
794 0 : if (stable == NFSV3WRITE_UNSTABLE)
795 0 : ioflags = IO_NODELOCKED;
796 : else if (stable == NFSV3WRITE_DATASYNC)
797 : ioflags = (IO_SYNC | IO_NODELOCKED);
798 : else
799 : ioflags = (IO_SYNC | IO_NODELOCKED);
800 0 : uiop->uio_resid = len;
801 0 : uiop->uio_rw = UIO_WRITE;
802 0 : uiop->uio_segflg = UIO_SYSSPACE;
803 0 : uiop->uio_procp = NULL;
804 0 : uiop->uio_offset = off;
805 0 : error = VOP_WRITE(vp, uiop, ioflags, cred);
806 0 : nfsstats.srvvop_writes++;
807 0 : free(iv, M_TEMP, ivlen);
808 0 : }
809 0 : aftat_ret = VOP_GETATTR(vp, &va, cred, procp);
810 0 : vput(vp);
811 0 : if (!error)
812 0 : error = aftat_ret;
813 0 : nfsm_reply(NFSX_PREOPATTR(info.nmi_v3) + NFSX_POSTOPORFATTR(info.nmi_v3) +
814 : 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(info.nmi_v3));
815 0 : if (info.nmi_v3) {
816 0 : nfsm_srvwcc(nfsd, forat_ret, &forat, aftat_ret, &va, &info);
817 0 : if (error) {
818 : error = 0;
819 0 : goto nfsmout;
820 : }
821 0 : tl = nfsm_build(&info.nmi_mb, 4 * NFSX_UNSIGNED);
822 0 : *tl++ = txdr_unsigned(retlen);
823 0 : if (stable == NFSV3WRITE_UNSTABLE)
824 0 : *tl++ = txdr_unsigned(stable);
825 : else
826 0 : *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
827 : /*
828 : * Actually, there is no need to txdr these fields,
829 : * but it may make the values more human readable,
830 : * for debugging purposes.
831 : */
832 0 : *tl++ = txdr_unsigned(boottime.tv_sec);
833 0 : *tl = txdr_unsigned(boottime.tv_nsec/1000);
834 0 : } else {
835 0 : fp = nfsm_build(&info.nmi_mb, NFSX_V2FATTR);
836 0 : nfsm_srvfattr(nfsd, &va, fp);
837 : }
838 : nfsmout:
839 0 : return(error);
840 :
841 : vbad:
842 0 : vput(vp);
843 : bad:
844 0 : nfsm_reply(0);
845 0 : nfsm_srvwcc(nfsd, forat_ret, &forat, aftat_ret, &va, &info);
846 0 : return (0);
847 0 : }
848 :
849 : /*
850 : * nfs create service
851 : * now does a truncate to 0 length via. setattr if it already exists
852 : */
853 : int
854 0 : nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
855 : struct proc *procp, struct mbuf **mrq)
856 : {
857 0 : struct mbuf *nam = nfsd->nd_nam;
858 0 : struct ucred *cred = &nfsd->nd_cr;
859 : struct nfs_fattr *fp;
860 0 : struct vattr va, dirfor, diraft;
861 : struct nfsv2_sattr *sp;
862 0 : struct nfsm_info info;
863 : u_int32_t *tl;
864 0 : struct nameidata nd;
865 : caddr_t cp;
866 : int32_t t1;
867 : int error = 0, len, tsize, dirfor_ret = 1, diraft_ret = 1;
868 : dev_t rdev = 0;
869 : int how, exclusive_flag = 0;
870 0 : char *cp2;
871 0 : struct vnode *vp = NULL, *dirp = NULL;
872 0 : nfsfh_t nfh;
873 : fhandle_t *fhp;
874 : u_quad_t tempsize;
875 0 : u_char cverf[NFSX_V3CREATEVERF];
876 :
877 0 : info.nmi_mreq = NULL;
878 0 : info.nmi_mrep = nfsd->nd_mrep;
879 0 : info.nmi_md = nfsd->nd_md;
880 0 : info.nmi_dpos = nfsd->nd_dpos;
881 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
882 :
883 0 : fhp = &nfh.fh_generic;
884 0 : nfsm_srvmtofh(fhp);
885 0 : nfsm_srvnamesiz(len);
886 :
887 0 : NDINIT(&nd, CREATE, LOCKPARENT | LOCKLEAF | SAVESTART, UIO_SYSSPACE,
888 : NULL, procp);
889 0 : nd.ni_cnd.cn_cred = cred;
890 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md,
891 : &info.nmi_dpos, &dirp, procp);
892 0 : if (dirp) {
893 0 : if (info.nmi_v3)
894 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
895 : else {
896 0 : vrele(dirp);
897 0 : dirp = NULL;
898 : }
899 : }
900 0 : if (error) {
901 0 : nfsm_reply(NFSX_WCCDATA(info.nmi_v3));
902 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
903 : &info);
904 0 : if (dirp)
905 0 : vrele(dirp);
906 0 : return (0);
907 : }
908 :
909 0 : VATTR_NULL(&va);
910 0 : if (info.nmi_v3) {
911 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
912 0 : how = fxdr_unsigned(int, *tl);
913 0 : switch (how) {
914 : case NFSV3CREATE_GUARDED:
915 0 : if (nd.ni_vp) {
916 : error = EEXIST;
917 0 : break;
918 : }
919 : case NFSV3CREATE_UNCHECKED:
920 0 : error = nfsm_srvsattr(&info.nmi_md, &va, info.nmi_mrep,
921 : &info.nmi_dpos);
922 0 : if (error)
923 : goto nfsmout;
924 : break;
925 : case NFSV3CREATE_EXCLUSIVE:
926 0 : nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
927 0 : bcopy(cp, cverf, NFSX_V3CREATEVERF);
928 : exclusive_flag = 1;
929 0 : if (nd.ni_vp == NULL)
930 0 : va.va_mode = 0;
931 : break;
932 : };
933 0 : va.va_type = VREG;
934 0 : } else {
935 0 : nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
936 0 : va.va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
937 0 : if (va.va_type == VNON)
938 0 : va.va_type = VREG;
939 0 : va.va_mode = nfstov_mode(sp->sa_mode);
940 0 : switch (va.va_type) {
941 : case VREG:
942 0 : tsize = fxdr_unsigned(int32_t, sp->sa_size);
943 0 : if (tsize != -1)
944 0 : va.va_size = (u_quad_t)tsize;
945 : break;
946 : case VCHR:
947 : case VBLK:
948 : case VFIFO:
949 0 : rdev = (dev_t)fxdr_unsigned(int32_t, sp->sa_size);
950 0 : break;
951 : default:
952 : break;
953 : };
954 : }
955 :
956 : /*
957 : * Iff doesn't exist, create it
958 : * otherwise just truncate to 0 length
959 : * should I set the mode too ??
960 : */
961 0 : if (nd.ni_vp == NULL) {
962 0 : if (va.va_type == VREG || va.va_type == VSOCK) {
963 0 : vrele(nd.ni_startdir);
964 0 : error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd,
965 : &va);
966 0 : vput(nd.ni_dvp);
967 0 : if (!error) {
968 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
969 0 : if (exclusive_flag) {
970 : exclusive_flag = 0;
971 0 : VATTR_NULL(&va);
972 0 : bcopy(cverf, (caddr_t)&va.va_atime,
973 : NFSX_V3CREATEVERF);
974 0 : error = VOP_SETATTR(nd.ni_vp, &va, cred,
975 : procp);
976 0 : }
977 : }
978 0 : } else if (va.va_type == VCHR || va.va_type == VBLK ||
979 0 : va.va_type == VFIFO) {
980 0 : if (va.va_type == VCHR && rdev == 0xffffffff)
981 0 : va.va_type = VFIFO;
982 0 : if (va.va_type != VFIFO &&
983 0 : (error = suser_ucred(cred))) {
984 0 : vrele(nd.ni_startdir);
985 0 : if (nd.ni_cnd.cn_flags & HASBUF) {
986 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
987 0 : nd.ni_cnd.cn_flags &= ~HASBUF;
988 0 : }
989 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
990 0 : vput(nd.ni_dvp);
991 0 : nfsm_reply(0);
992 : error = 0;
993 0 : goto nfsmout;
994 : } else
995 0 : va.va_rdev = (dev_t)rdev;
996 0 : error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd,
997 : &va);
998 0 : vput(nd.ni_dvp);
999 0 : if (error) {
1000 0 : vrele(nd.ni_startdir);
1001 0 : if (nd.ni_cnd.cn_flags & HASBUF) {
1002 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1003 0 : nd.ni_cnd.cn_flags &= ~HASBUF;
1004 0 : }
1005 0 : nfsm_reply(0);
1006 : error = 0;
1007 0 : goto nfsmout;
1008 : }
1009 0 : nd.ni_cnd.cn_nameiop = LOOKUP;
1010 0 : nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
1011 0 : nd.ni_cnd.cn_proc = procp;
1012 0 : nd.ni_cnd.cn_cred = cred;
1013 0 : if ((error = vfs_lookup(&nd)) != 0) {
1014 0 : if (nd.ni_cnd.cn_flags & HASBUF) {
1015 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1016 0 : nd.ni_cnd.cn_flags &= ~HASBUF;
1017 0 : }
1018 0 : nfsm_reply(0);
1019 : error = 0;
1020 0 : goto nfsmout;
1021 : }
1022 :
1023 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1024 0 : if (nd.ni_cnd.cn_flags & ISSYMLINK) {
1025 0 : vrele(nd.ni_dvp);
1026 0 : vput(nd.ni_vp);
1027 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1028 : error = EINVAL;
1029 0 : nfsm_reply(0);
1030 : error = 0;
1031 0 : goto nfsmout;
1032 : }
1033 : } else {
1034 0 : vrele(nd.ni_startdir);
1035 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1036 0 : nd.ni_cnd.cn_flags &= ~HASBUF;
1037 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1038 0 : vput(nd.ni_dvp);
1039 : error = ENXIO;
1040 : }
1041 0 : vp = nd.ni_vp;
1042 0 : } else {
1043 0 : vrele(nd.ni_startdir);
1044 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1045 0 : nd.ni_cnd.cn_flags &= ~HASBUF;
1046 0 : vp = nd.ni_vp;
1047 0 : if (nd.ni_dvp == vp)
1048 0 : vrele(nd.ni_dvp);
1049 : else
1050 0 : vput(nd.ni_dvp);
1051 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1052 0 : if (va.va_size != -1) {
1053 0 : error = nfsrv_access(vp, VWRITE, cred,
1054 0 : (nd.ni_cnd.cn_flags & RDONLY), procp, 0);
1055 0 : if (!error) {
1056 0 : tempsize = va.va_size;
1057 0 : VATTR_NULL(&va);
1058 0 : va.va_size = tempsize;
1059 0 : error = VOP_SETATTR(vp, &va, cred,
1060 : procp);
1061 0 : }
1062 0 : if (error)
1063 0 : vput(vp);
1064 : }
1065 : }
1066 0 : if (!error) {
1067 0 : memset(fhp, 0, sizeof(nfh));
1068 0 : fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1069 0 : error = VFS_VPTOFH(vp, &fhp->fh_fid);
1070 0 : if (!error)
1071 0 : error = VOP_GETATTR(vp, &va, cred, procp);
1072 0 : vput(vp);
1073 0 : }
1074 0 : if (info.nmi_v3) {
1075 0 : if (exclusive_flag && !error &&
1076 0 : bcmp(cverf, (caddr_t)&va.va_atime, NFSX_V3CREATEVERF))
1077 0 : error = EEXIST;
1078 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1079 0 : vrele(dirp);
1080 0 : }
1081 0 : nfsm_reply(NFSX_SRVFH(info.nmi_v3) + NFSX_FATTR(info.nmi_v3)
1082 : + NFSX_WCCDATA(info.nmi_v3));
1083 0 : if (info.nmi_v3) {
1084 0 : if (!error) {
1085 0 : nfsm_srvpostop_fh(fhp);
1086 0 : nfsm_srvpostop_attr(nfsd, 0, &va, &info);
1087 0 : }
1088 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1089 : &info);
1090 0 : } else {
1091 0 : nfsm_srvfhtom(&info.nmi_mb, fhp, info.nmi_v3);
1092 0 : fp = nfsm_build(&info.nmi_mb, NFSX_V2FATTR);
1093 0 : nfsm_srvfattr(nfsd, &va, fp);
1094 : }
1095 0 : return (0);
1096 : nfsmout:
1097 0 : if (dirp)
1098 0 : vrele(dirp);
1099 0 : if (nd.ni_cnd.cn_nameiop != LOOKUP) {
1100 0 : vrele(nd.ni_startdir);
1101 0 : if (nd.ni_cnd.cn_flags & HASBUF) {
1102 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1103 0 : nd.ni_cnd.cn_flags &= ~HASBUF;
1104 0 : }
1105 : }
1106 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1107 0 : if (nd.ni_dvp == nd.ni_vp)
1108 0 : vrele(nd.ni_dvp);
1109 : else
1110 0 : vput(nd.ni_dvp);
1111 0 : if (nd.ni_vp)
1112 0 : vput(nd.ni_vp);
1113 0 : return (error);
1114 0 : }
1115 :
1116 : /*
1117 : * nfs v3 mknod service
1118 : */
1119 : int
1120 0 : nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1121 : struct proc *procp, struct mbuf **mrq)
1122 : {
1123 0 : struct mbuf *nam = nfsd->nd_nam;
1124 0 : struct ucred *cred = &nfsd->nd_cr;
1125 0 : struct vattr va, dirfor, diraft;
1126 0 : struct nfsm_info info;
1127 : u_int32_t *tl;
1128 0 : struct nameidata nd;
1129 : int32_t t1;
1130 : int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
1131 : u_int32_t major, minor;
1132 : enum vtype vtyp;
1133 0 : char *cp2;
1134 0 : struct vnode *vp, *dirp = NULL;
1135 0 : nfsfh_t nfh;
1136 : fhandle_t *fhp;
1137 :
1138 0 : info.nmi_mreq = NULL;
1139 0 : info.nmi_mrep = nfsd->nd_mrep;
1140 0 : info.nmi_md = nfsd->nd_md;
1141 0 : info.nmi_dpos = nfsd->nd_dpos;
1142 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1143 :
1144 0 : fhp = &nfh.fh_generic;
1145 0 : nfsm_srvmtofh(fhp);
1146 0 : nfsm_srvnamesiz(len);
1147 :
1148 0 : NDINIT(&nd, CREATE, LOCKPARENT | LOCKLEAF | SAVESTART, UIO_SYSSPACE,
1149 : NULL, procp);
1150 0 : nd.ni_cnd.cn_cred = cred;
1151 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md, &info.nmi_dpos, &dirp, procp);
1152 0 : if (dirp)
1153 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
1154 0 : if (error) {
1155 0 : nfsm_reply(NFSX_WCCDATA(1));
1156 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1157 : &info);
1158 0 : if (dirp)
1159 0 : vrele(dirp);
1160 0 : return (0);
1161 : }
1162 :
1163 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1164 0 : vtyp = nfsv3tov_type(*tl);
1165 0 : if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1166 0 : vrele(nd.ni_startdir);
1167 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1168 : error = NFSERR_BADTYPE;
1169 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1170 0 : if (nd.ni_dvp == nd.ni_vp)
1171 0 : vrele(nd.ni_dvp);
1172 : else
1173 0 : vput(nd.ni_dvp);
1174 0 : if (nd.ni_vp)
1175 0 : vput(nd.ni_vp);
1176 : goto out;
1177 : }
1178 0 : VATTR_NULL(&va);
1179 0 : error = nfsm_srvsattr(&info.nmi_md, &va, info.nmi_mrep, &info.nmi_dpos);
1180 0 : if (error)
1181 : goto nfsmout;
1182 0 : if (vtyp == VCHR || vtyp == VBLK) {
1183 0 : nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1184 0 : major = fxdr_unsigned(u_int32_t, *tl++);
1185 0 : minor = fxdr_unsigned(u_int32_t, *tl);
1186 0 : va.va_rdev = makedev(major, minor);
1187 0 : }
1188 :
1189 : /*
1190 : * Iff doesn't exist, create it.
1191 : */
1192 0 : if (nd.ni_vp) {
1193 0 : vrele(nd.ni_startdir);
1194 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1195 : error = EEXIST;
1196 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1197 0 : if (nd.ni_dvp == nd.ni_vp)
1198 0 : vrele(nd.ni_dvp);
1199 : else
1200 0 : vput(nd.ni_dvp);
1201 0 : vput(nd.ni_vp);
1202 0 : goto out;
1203 : }
1204 0 : va.va_type = vtyp;
1205 0 : if (vtyp == VSOCK) {
1206 0 : vrele(nd.ni_startdir);
1207 0 : error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &va);
1208 0 : vput(nd.ni_dvp);
1209 0 : if (!error)
1210 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1211 : } else {
1212 0 : if (va.va_type != VFIFO &&
1213 0 : (error = suser_ucred(cred))) {
1214 0 : vrele(nd.ni_startdir);
1215 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1216 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1217 0 : vput(nd.ni_dvp);
1218 0 : goto out;
1219 : }
1220 0 : error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &va);
1221 0 : vput(nd.ni_dvp);
1222 0 : if (error) {
1223 0 : vrele(nd.ni_startdir);
1224 0 : goto out;
1225 : }
1226 0 : nd.ni_cnd.cn_nameiop = LOOKUP;
1227 0 : nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
1228 0 : nd.ni_cnd.cn_proc = procp;
1229 0 : nd.ni_cnd.cn_cred = procp->p_ucred;
1230 0 : error = vfs_lookup(&nd);
1231 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1232 0 : if (error)
1233 : goto out;
1234 0 : if (nd.ni_cnd.cn_flags & ISSYMLINK) {
1235 0 : vrele(nd.ni_dvp);
1236 0 : vput(nd.ni_vp);
1237 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1238 : error = EINVAL;
1239 0 : }
1240 : }
1241 : out:
1242 0 : vp = nd.ni_vp;
1243 0 : if (!error) {
1244 0 : memset(fhp, 0, sizeof(nfh));
1245 0 : fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1246 0 : error = VFS_VPTOFH(vp, &fhp->fh_fid);
1247 0 : if (!error)
1248 0 : error = VOP_GETATTR(vp, &va, cred, procp);
1249 0 : vput(vp);
1250 0 : }
1251 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1252 0 : vrele(dirp);
1253 0 : nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
1254 0 : if (!error) {
1255 0 : nfsm_srvpostop_fh(fhp);
1256 0 : nfsm_srvpostop_attr(nfsd, 0, &va, &info);
1257 0 : }
1258 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft, &info);
1259 0 : return (0);
1260 : nfsmout:
1261 0 : if (dirp)
1262 0 : vrele(dirp);
1263 0 : if (nd.ni_cnd.cn_nameiop) {
1264 0 : vrele(nd.ni_startdir);
1265 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1266 0 : }
1267 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1268 0 : if (nd.ni_dvp == nd.ni_vp)
1269 0 : vrele(nd.ni_dvp);
1270 : else
1271 0 : vput(nd.ni_dvp);
1272 0 : if (nd.ni_vp)
1273 0 : vput(nd.ni_vp);
1274 0 : return (error);
1275 0 : }
1276 :
1277 : /*
1278 : * nfs remove service
1279 : */
1280 : int
1281 0 : nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1282 : struct proc *procp, struct mbuf **mrq)
1283 : {
1284 0 : struct mbuf *nam = nfsd->nd_nam;
1285 0 : struct ucred *cred = &nfsd->nd_cr;
1286 0 : struct nameidata nd;
1287 0 : struct nfsm_info info;
1288 : u_int32_t *tl;
1289 : int32_t t1;
1290 : int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
1291 0 : char *cp2;
1292 0 : struct vnode *vp, *dirp;
1293 0 : struct vattr dirfor, diraft;
1294 0 : nfsfh_t nfh;
1295 : fhandle_t *fhp;
1296 :
1297 0 : info.nmi_mreq = NULL;
1298 0 : info.nmi_mrep = nfsd->nd_mrep;
1299 0 : info.nmi_md = nfsd->nd_md;
1300 0 : info.nmi_dpos = nfsd->nd_dpos;
1301 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1302 :
1303 : vp = NULL;
1304 :
1305 0 : fhp = &nfh.fh_generic;
1306 0 : nfsm_srvmtofh(fhp);
1307 0 : nfsm_srvnamesiz(len);
1308 :
1309 0 : NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_SYSSPACE, NULL, procp);
1310 0 : nd.ni_cnd.cn_cred = cred;
1311 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md, &info.nmi_dpos, &dirp, procp);
1312 0 : if (dirp) {
1313 0 : if (info.nmi_v3)
1314 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
1315 : else {
1316 0 : vrele(dirp);
1317 0 : dirp = NULL;
1318 : }
1319 : }
1320 :
1321 0 : if (!error) {
1322 0 : vp = nd.ni_vp;
1323 0 : if (vp->v_type == VDIR &&
1324 0 : (error = suser_ucred(cred)) != 0)
1325 : goto out;
1326 : /*
1327 : * The root of a mounted filesystem cannot be deleted.
1328 : */
1329 0 : if (vp->v_flag & VROOT) {
1330 : error = EBUSY;
1331 0 : goto out;
1332 : }
1333 0 : if (vp->v_flag & VTEXT)
1334 0 : uvm_vnp_uncache(vp);
1335 : out:
1336 0 : if (!error) {
1337 0 : error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
1338 0 : } else {
1339 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1340 0 : if (nd.ni_dvp == vp)
1341 0 : vrele(nd.ni_dvp);
1342 : else
1343 0 : vput(nd.ni_dvp);
1344 0 : vput(vp);
1345 : }
1346 : }
1347 0 : if (dirp && info.nmi_v3) {
1348 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1349 0 : vrele(dirp);
1350 0 : }
1351 0 : nfsm_reply(NFSX_WCCDATA(info.nmi_v3));
1352 0 : if (info.nmi_v3) {
1353 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1354 : &info);
1355 0 : return (0);
1356 : }
1357 :
1358 : nfsmout:
1359 0 : return(error);
1360 0 : }
1361 :
1362 : /*
1363 : * nfs rename service
1364 : */
1365 : int
1366 0 : nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1367 : struct proc *procp, struct mbuf **mrq)
1368 : {
1369 0 : struct mbuf *nam = nfsd->nd_nam;
1370 0 : struct ucred *cred = &nfsd->nd_cr;
1371 0 : struct nfsm_info info;
1372 : u_int32_t *tl;
1373 : int32_t t1;
1374 : int error = 0, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
1375 : int tdirfor_ret = 1, tdiraft_ret = 1;
1376 0 : char *cp2;
1377 0 : struct nameidata fromnd, tond;
1378 0 : struct vnode *fvp = NULL, *tvp, *tdvp, *fdirp = NULL;
1379 0 : struct vnode *tdirp = NULL;
1380 0 : struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
1381 0 : nfsfh_t fnfh, tnfh;
1382 : fhandle_t *ffhp, *tfhp;
1383 : uid_t saved_uid;
1384 :
1385 0 : info.nmi_mreq = NULL;
1386 0 : info.nmi_mrep = nfsd->nd_mrep;
1387 0 : info.nmi_md = nfsd->nd_md;
1388 0 : info.nmi_dpos = nfsd->nd_dpos;
1389 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1390 :
1391 0 : ffhp = &fnfh.fh_generic;
1392 0 : tfhp = &tnfh.fh_generic;
1393 0 : nfsm_srvmtofh(ffhp);
1394 0 : nfsm_srvnamesiz(len);
1395 :
1396 : /*
1397 : * Remember our original uid so that we can reset cr_uid before
1398 : * the second nfs_namei() call, in case it is remapped.
1399 : */
1400 0 : saved_uid = cred->cr_uid;
1401 :
1402 0 : NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_SYSSPACE, NULL,
1403 : procp);
1404 0 : fromnd.ni_cnd.cn_cred = cred;
1405 0 : error = nfs_namei(&fromnd, ffhp, len, slp, nam, &info.nmi_md,
1406 : &info.nmi_dpos, &fdirp, procp);
1407 0 : if (fdirp) {
1408 0 : if (info.nmi_v3)
1409 0 : fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, cred,
1410 : procp);
1411 : else {
1412 0 : vrele(fdirp);
1413 0 : fdirp = NULL;
1414 : }
1415 : }
1416 0 : if (error) {
1417 0 : nfsm_reply(2 * NFSX_WCCDATA(info.nmi_v3));
1418 0 : nfsm_srvwcc(nfsd, fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft,
1419 : &info);
1420 0 : nfsm_srvwcc(nfsd, tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft,
1421 : &info);
1422 0 : if (fdirp)
1423 0 : vrele(fdirp);
1424 0 : return (0);
1425 : }
1426 :
1427 0 : fvp = fromnd.ni_vp;
1428 0 : nfsm_srvmtofh(tfhp);
1429 0 : nfsm_strsiz(len2, NFS_MAXNAMLEN);
1430 0 : cred->cr_uid = saved_uid;
1431 :
1432 0 : NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF| NOCACHE | SAVESTART,
1433 : UIO_SYSSPACE, NULL, procp);
1434 0 : tond.ni_cnd.cn_cred = cred;
1435 0 : error = nfs_namei(&tond, tfhp, len2, slp, nam, &info.nmi_md,
1436 : &info.nmi_dpos, &tdirp, procp);
1437 0 : if (tdirp) {
1438 0 : if (info.nmi_v3)
1439 0 : tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, cred,
1440 : procp);
1441 : else {
1442 0 : vrele(tdirp);
1443 0 : tdirp = NULL;
1444 : }
1445 : }
1446 0 : if (error) {
1447 0 : VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
1448 0 : vrele(fromnd.ni_dvp);
1449 0 : vrele(fvp);
1450 0 : goto out1;
1451 : }
1452 0 : tdvp = tond.ni_dvp;
1453 0 : tvp = tond.ni_vp;
1454 0 : if (tvp != NULL) {
1455 0 : if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
1456 0 : error = info.nmi_v3 ? EEXIST : EISDIR;
1457 0 : goto out;
1458 0 : } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
1459 0 : error = info.nmi_v3 ? EEXIST : ENOTDIR;
1460 0 : goto out;
1461 : }
1462 0 : if (tvp->v_type == VDIR && tvp->v_mountedhere) {
1463 0 : error = info.nmi_v3 ? EXDEV : ENOTEMPTY;
1464 0 : goto out;
1465 : }
1466 : }
1467 0 : if (fvp->v_type == VDIR && fvp->v_mountedhere) {
1468 0 : error = info.nmi_v3 ? EXDEV : ENOTEMPTY;
1469 0 : goto out;
1470 : }
1471 0 : if (fvp->v_mount != tdvp->v_mount) {
1472 0 : error = info.nmi_v3 ? EXDEV : ENOTEMPTY;
1473 0 : goto out;
1474 : }
1475 0 : if (fvp == tdvp)
1476 0 : error = info.nmi_v3 ? EINVAL : ENOTEMPTY;
1477 : /*
1478 : * If source is the same as the destination (that is the
1479 : * same vnode with the same name in the same directory),
1480 : * then there is nothing to do.
1481 : */
1482 0 : if (fvp == tvp && fromnd.ni_dvp == tdvp &&
1483 0 : fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen &&
1484 0 : !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr,
1485 : fromnd.ni_cnd.cn_namelen))
1486 0 : error = -1;
1487 : out:
1488 0 : if (!error) {
1489 0 : error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
1490 0 : tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
1491 0 : } else {
1492 0 : VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd);
1493 0 : if (tdvp == tvp)
1494 0 : vrele(tdvp);
1495 : else
1496 0 : vput(tdvp);
1497 0 : if (tvp)
1498 0 : vput(tvp);
1499 0 : VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
1500 0 : vrele(fromnd.ni_dvp);
1501 0 : vrele(fvp);
1502 0 : if (error == -1)
1503 0 : error = 0;
1504 : }
1505 0 : vrele(tond.ni_startdir);
1506 0 : pool_put(&namei_pool, tond.ni_cnd.cn_pnbuf);
1507 : out1:
1508 0 : if (fdirp) {
1509 0 : fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, cred, procp);
1510 0 : vrele(fdirp);
1511 0 : }
1512 0 : if (tdirp) {
1513 0 : tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, cred, procp);
1514 0 : vrele(tdirp);
1515 0 : }
1516 0 : vrele(fromnd.ni_startdir);
1517 0 : pool_put(&namei_pool, fromnd.ni_cnd.cn_pnbuf);
1518 0 : nfsm_reply(2 * NFSX_WCCDATA(info.nmi_v3));
1519 0 : if (info.nmi_v3) {
1520 0 : nfsm_srvwcc(nfsd, fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft,
1521 : &info);
1522 0 : nfsm_srvwcc(nfsd, tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft,
1523 : &info);
1524 0 : }
1525 0 : return (0);
1526 :
1527 : nfsmout:
1528 0 : if (fdirp)
1529 0 : vrele(fdirp);
1530 0 : if (tdirp)
1531 0 : vrele(tdirp);
1532 0 : if (tond.ni_cnd.cn_nameiop) {
1533 0 : vrele(tond.ni_startdir);
1534 0 : pool_put(&namei_pool, tond.ni_cnd.cn_pnbuf);
1535 0 : }
1536 0 : if (fromnd.ni_cnd.cn_nameiop) {
1537 0 : if (fromnd.ni_startdir)
1538 0 : vrele(fromnd.ni_startdir);
1539 0 : VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
1540 :
1541 : /*
1542 : * XXX: Workaround the fact that fromnd.ni_dvp can point
1543 : * to the same vnode as fdirp.
1544 : */
1545 0 : if (fromnd.ni_dvp != NULL && fromnd.ni_dvp != fdirp)
1546 0 : vrele(fromnd.ni_dvp);
1547 0 : if (fvp)
1548 0 : vrele(fvp);
1549 : }
1550 0 : return (error);
1551 0 : }
1552 :
1553 : /*
1554 : * nfs link service
1555 : */
1556 : int
1557 0 : nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1558 : struct proc *procp, struct mbuf **mrq)
1559 : {
1560 0 : struct mbuf *nam = nfsd->nd_nam;
1561 0 : struct nfsm_info info;
1562 0 : struct ucred *cred = &nfsd->nd_cr;
1563 0 : struct nameidata nd;
1564 : u_int32_t *tl;
1565 : int32_t t1;
1566 0 : int error = 0, rdonly, len, dirfor_ret = 1, diraft_ret = 1;
1567 : int getret = 1;
1568 0 : char *cp2;
1569 0 : struct vnode *vp, *xp, *dirp = NULL;
1570 0 : struct vattr dirfor, diraft, at;
1571 0 : nfsfh_t nfh, dnfh;
1572 : fhandle_t *fhp, *dfhp;
1573 :
1574 0 : info.nmi_mreq = NULL;
1575 0 : info.nmi_mrep = nfsd->nd_mrep;
1576 0 : info.nmi_md = nfsd->nd_md;
1577 0 : info.nmi_dpos = nfsd->nd_dpos;
1578 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1579 :
1580 0 : fhp = &nfh.fh_generic;
1581 0 : dfhp = &dnfh.fh_generic;
1582 0 : nfsm_srvmtofh(fhp);
1583 0 : nfsm_srvmtofh(dfhp);
1584 0 : nfsm_srvnamesiz(len);
1585 :
1586 0 : error = nfsrv_fhtovp(fhp, 0, &vp, cred, slp, nam, &rdonly);
1587 0 : if (error) {
1588 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3) +
1589 : NFSX_WCCDATA(info.nmi_v3));
1590 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
1591 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1592 : &info);
1593 : error = 0;
1594 0 : goto nfsmout;
1595 : }
1596 0 : if (vp->v_type == VDIR && (error = suser_ucred(cred)) != 0)
1597 : goto out1;
1598 :
1599 0 : NDINIT(&nd, CREATE, LOCKPARENT, UIO_SYSSPACE, NULL, procp);
1600 0 : nd.ni_cnd.cn_cred = cred;
1601 0 : error = nfs_namei(&nd, dfhp, len, slp, nam, &info.nmi_md,
1602 : &info.nmi_dpos, &dirp, procp);
1603 0 : if (dirp) {
1604 0 : if (info.nmi_v3)
1605 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
1606 : procp);
1607 : else {
1608 0 : vrele(dirp);
1609 0 : dirp = NULL;
1610 : }
1611 : }
1612 0 : if (error)
1613 : goto out1;
1614 0 : xp = nd.ni_vp;
1615 0 : if (xp != NULL) {
1616 : error = EEXIST;
1617 0 : goto out;
1618 : }
1619 0 : xp = nd.ni_dvp;
1620 0 : if (vp->v_mount != xp->v_mount)
1621 0 : error = EXDEV;
1622 : out:
1623 0 : if (!error) {
1624 0 : error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd);
1625 0 : } else {
1626 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1627 0 : if (nd.ni_dvp == nd.ni_vp)
1628 0 : vrele(nd.ni_dvp);
1629 : else
1630 0 : vput(nd.ni_dvp);
1631 0 : if (nd.ni_vp)
1632 0 : vrele(nd.ni_vp);
1633 : }
1634 : out1:
1635 0 : if (info.nmi_v3)
1636 0 : getret = VOP_GETATTR(vp, &at, cred, procp);
1637 0 : if (dirp) {
1638 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1639 0 : vrele(dirp);
1640 0 : }
1641 0 : vrele(vp);
1642 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3) + NFSX_WCCDATA(info.nmi_v3));
1643 0 : if (info.nmi_v3) {
1644 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
1645 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1646 : &info);
1647 : error = 0;
1648 0 : }
1649 : nfsmout:
1650 0 : return(error);
1651 0 : }
1652 :
1653 : /*
1654 : * nfs symbolic link service
1655 : */
1656 : int
1657 0 : nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1658 : struct proc *procp, struct mbuf **mrq)
1659 : {
1660 0 : struct mbuf *nam = nfsd->nd_nam;
1661 0 : struct ucred *cred = &nfsd->nd_cr;
1662 0 : struct vattr va, dirfor, diraft;
1663 0 : struct nameidata nd;
1664 0 : struct nfsm_info info;
1665 : u_int32_t *tl;
1666 : int32_t t1;
1667 : struct nfsv2_sattr *sp;
1668 0 : char *pathcp = NULL, *cp2;
1669 0 : struct uio io;
1670 0 : struct iovec iv;
1671 : int error = 0, len, pathlen, len2, dirfor_ret = 1, diraft_ret = 1;
1672 0 : struct vnode *dirp = NULL;
1673 0 : nfsfh_t nfh;
1674 : fhandle_t *fhp;
1675 :
1676 0 : info.nmi_mreq = NULL;
1677 0 : info.nmi_mrep = nfsd->nd_mrep;
1678 0 : info.nmi_md = nfsd->nd_md;
1679 0 : info.nmi_dpos = nfsd->nd_dpos;
1680 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1681 :
1682 0 : fhp = &nfh.fh_generic;
1683 0 : nfsm_srvmtofh(fhp);
1684 0 : nfsm_srvnamesiz(len);
1685 :
1686 0 : NDINIT(&nd, CREATE, LOCKPARENT | SAVESTART, UIO_SYSSPACE, NULL, procp);
1687 0 : nd.ni_cnd.cn_cred = cred;
1688 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md,
1689 : &info.nmi_dpos, &dirp, procp);
1690 0 : if (dirp) {
1691 0 : if (info.nmi_v3)
1692 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
1693 : procp);
1694 : else {
1695 0 : vrele(dirp);
1696 0 : dirp = NULL;
1697 : }
1698 : }
1699 0 : if (error)
1700 : goto out;
1701 0 : VATTR_NULL(&va);
1702 0 : if (info.nmi_v3) {
1703 0 : error = nfsm_srvsattr(&info.nmi_md, &va, info.nmi_mrep,
1704 : &info.nmi_dpos);
1705 0 : if (error)
1706 : goto nfsmout;
1707 : }
1708 0 : nfsm_strsiz(len2, NFS_MAXPATHLEN);
1709 0 : pathlen = len2 + 1;
1710 0 : pathcp = malloc(pathlen, M_TEMP, M_WAITOK);
1711 0 : iv.iov_base = pathcp;
1712 0 : iv.iov_len = len2;
1713 0 : io.uio_resid = len2;
1714 0 : io.uio_offset = 0;
1715 0 : io.uio_iov = &iv;
1716 0 : io.uio_iovcnt = 1;
1717 0 : io.uio_segflg = UIO_SYSSPACE;
1718 0 : io.uio_rw = UIO_READ;
1719 0 : io.uio_procp = NULL;
1720 0 : nfsm_mtouio(&io, len2);
1721 0 : if (!info.nmi_v3) {
1722 0 : nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1723 0 : va.va_mode = fxdr_unsigned(u_int16_t, sp->sa_mode);
1724 0 : }
1725 0 : *(pathcp + len2) = '\0';
1726 0 : if (nd.ni_vp) {
1727 0 : vrele(nd.ni_startdir);
1728 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1729 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1730 0 : if (nd.ni_dvp == nd.ni_vp)
1731 0 : vrele(nd.ni_dvp);
1732 : else
1733 0 : vput(nd.ni_dvp);
1734 0 : vrele(nd.ni_vp);
1735 : error = EEXIST;
1736 0 : goto out;
1737 : }
1738 0 : error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &va, pathcp);
1739 0 : if (error)
1740 0 : vrele(nd.ni_startdir);
1741 : else {
1742 0 : if (info.nmi_v3) {
1743 0 : nd.ni_cnd.cn_nameiop = LOOKUP;
1744 0 : nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART |
1745 : FOLLOW);
1746 0 : nd.ni_cnd.cn_flags |= (NOFOLLOW | LOCKLEAF);
1747 0 : nd.ni_cnd.cn_proc = procp;
1748 0 : nd.ni_cnd.cn_cred = cred;
1749 0 : error = vfs_lookup(&nd);
1750 0 : if (!error) {
1751 0 : memset(fhp, 0, sizeof(nfh));
1752 0 : fhp->fh_fsid =
1753 0 : nd.ni_vp->v_mount->mnt_stat.f_fsid;
1754 0 : error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
1755 0 : if (!error)
1756 0 : error = VOP_GETATTR(nd.ni_vp, &va, cred,
1757 : procp);
1758 0 : vput(nd.ni_vp);
1759 0 : }
1760 : } else
1761 0 : vrele(nd.ni_startdir);
1762 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1763 : }
1764 : out:
1765 0 : if (pathcp)
1766 0 : free(pathcp, M_TEMP, pathlen);
1767 0 : if (dirp) {
1768 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1769 0 : vrele(dirp);
1770 0 : }
1771 0 : nfsm_reply(NFSX_SRVFH(info.nmi_v3) + NFSX_POSTOPATTR(info.nmi_v3)
1772 : + NFSX_WCCDATA(info.nmi_v3));
1773 0 : if (info.nmi_v3) {
1774 0 : if (!error) {
1775 0 : nfsm_srvpostop_fh(fhp);
1776 0 : nfsm_srvpostop_attr(nfsd, 0, &va, &info);
1777 0 : }
1778 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1779 : &info);
1780 0 : }
1781 0 : return (0);
1782 : nfsmout:
1783 0 : if (nd.ni_cnd.cn_nameiop) {
1784 0 : vrele(nd.ni_startdir);
1785 0 : pool_put(&namei_pool, nd.ni_cnd.cn_pnbuf);
1786 0 : }
1787 0 : if (dirp)
1788 0 : vrele(dirp);
1789 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1790 0 : if (nd.ni_dvp == nd.ni_vp)
1791 0 : vrele(nd.ni_dvp);
1792 : else
1793 0 : vput(nd.ni_dvp);
1794 0 : if (nd.ni_vp)
1795 0 : vrele(nd.ni_vp);
1796 0 : if (pathcp)
1797 0 : free(pathcp, M_TEMP, pathlen);
1798 0 : return (error);
1799 0 : }
1800 :
1801 : /*
1802 : * nfs mkdir service
1803 : */
1804 : int
1805 0 : nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1806 : struct proc *procp, struct mbuf **mrq)
1807 : {
1808 0 : struct mbuf *nam = nfsd->nd_nam;
1809 0 : struct ucred *cred = &nfsd->nd_cr;
1810 0 : struct vattr va, dirfor, diraft;
1811 : struct nfs_fattr *fp;
1812 0 : struct nameidata nd;
1813 0 : struct nfsm_info info;
1814 : u_int32_t *tl;
1815 : int32_t t1;
1816 : int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
1817 0 : char *cp2;
1818 0 : struct vnode *vp, *dirp = NULL;
1819 0 : nfsfh_t nfh;
1820 : fhandle_t *fhp;
1821 :
1822 0 : info.nmi_mreq = NULL;
1823 0 : info.nmi_mrep = nfsd->nd_mrep;
1824 0 : info.nmi_md = nfsd->nd_md;
1825 0 : info.nmi_dpos = nfsd->nd_dpos;
1826 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1827 :
1828 0 : fhp = &nfh.fh_generic;
1829 0 : nfsm_srvmtofh(fhp);
1830 0 : nfsm_srvnamesiz(len);
1831 :
1832 0 : NDINIT(&nd, CREATE, LOCKPARENT, UIO_SYSSPACE, NULL, procp);
1833 0 : nd.ni_cnd.cn_cred = cred;
1834 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md,
1835 : &info.nmi_dpos, &dirp, procp);
1836 0 : if (dirp) {
1837 0 : if (info.nmi_v3)
1838 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
1839 : else {
1840 0 : vrele(dirp);
1841 0 : dirp = NULL;
1842 : }
1843 : }
1844 0 : if (error) {
1845 0 : nfsm_reply(NFSX_WCCDATA(info.nmi_v3));
1846 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1847 : &info);
1848 0 : if (dirp)
1849 0 : vrele(dirp);
1850 0 : return (0);
1851 : }
1852 :
1853 0 : VATTR_NULL(&va);
1854 0 : if (info.nmi_v3) {
1855 0 : error = nfsm_srvsattr(&info.nmi_md, &va, info.nmi_mrep,
1856 : &info.nmi_dpos);
1857 0 : if (error)
1858 : goto nfsmout;
1859 : } else {
1860 0 : nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1861 0 : va.va_mode = nfstov_mode(*tl++);
1862 : }
1863 0 : va.va_type = VDIR;
1864 0 : vp = nd.ni_vp;
1865 0 : if (vp != NULL) {
1866 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1867 0 : if (nd.ni_dvp == vp)
1868 0 : vrele(nd.ni_dvp);
1869 : else
1870 0 : vput(nd.ni_dvp);
1871 0 : vrele(vp);
1872 : error = EEXIST;
1873 0 : goto out;
1874 : }
1875 0 : error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &va);
1876 0 : if (!error) {
1877 0 : vp = nd.ni_vp;
1878 0 : memset(fhp, 0, sizeof(nfh));
1879 0 : fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1880 0 : error = VFS_VPTOFH(vp, &fhp->fh_fid);
1881 0 : if (!error)
1882 0 : error = VOP_GETATTR(vp, &va, cred, procp);
1883 0 : vput(vp);
1884 0 : }
1885 : out:
1886 0 : if (dirp) {
1887 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1888 0 : vrele(dirp);
1889 0 : }
1890 0 : nfsm_reply(NFSX_SRVFH(info.nmi_v3) + NFSX_POSTOPATTR(info.nmi_v3) +
1891 : NFSX_WCCDATA(info.nmi_v3));
1892 0 : if (info.nmi_v3) {
1893 0 : if (!error) {
1894 0 : nfsm_srvpostop_fh(fhp);
1895 0 : nfsm_srvpostop_attr(nfsd, 0, &va, &info);
1896 0 : }
1897 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1898 : &info);
1899 0 : } else {
1900 0 : nfsm_srvfhtom(&info.nmi_mb, fhp, info.nmi_v3);
1901 0 : fp = nfsm_build(&info.nmi_mb, NFSX_V2FATTR);
1902 0 : nfsm_srvfattr(nfsd, &va, fp);
1903 : }
1904 0 : return (0);
1905 : nfsmout:
1906 0 : if (dirp)
1907 0 : vrele(dirp);
1908 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1909 0 : if (nd.ni_dvp == nd.ni_vp)
1910 0 : vrele(nd.ni_dvp);
1911 : else
1912 0 : vput(nd.ni_dvp);
1913 0 : if (nd.ni_vp)
1914 0 : vrele(nd.ni_vp);
1915 0 : return (error);
1916 0 : }
1917 :
1918 : /*
1919 : * nfs rmdir service
1920 : */
1921 : int
1922 0 : nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1923 : struct proc *procp, struct mbuf **mrq)
1924 : {
1925 0 : struct mbuf *nam = nfsd->nd_nam;
1926 0 : struct ucred *cred = &nfsd->nd_cr;
1927 0 : struct nfsm_info info;
1928 : u_int32_t *tl;
1929 : int32_t t1;
1930 : int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
1931 0 : char *cp2;
1932 0 : struct vnode *vp, *dirp = NULL;
1933 0 : struct vattr dirfor, diraft;
1934 0 : nfsfh_t nfh;
1935 : fhandle_t *fhp;
1936 0 : struct nameidata nd;
1937 :
1938 0 : info.nmi_mreq = NULL;
1939 0 : info.nmi_mrep = nfsd->nd_mrep;
1940 0 : info.nmi_md = nfsd->nd_md;
1941 0 : info.nmi_dpos = nfsd->nd_dpos;
1942 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
1943 :
1944 0 : fhp = &nfh.fh_generic;
1945 0 : nfsm_srvmtofh(fhp);
1946 0 : nfsm_srvnamesiz(len);
1947 :
1948 0 : NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_SYSSPACE, NULL, procp);
1949 0 : nd.ni_cnd.cn_cred = cred;
1950 0 : error = nfs_namei(&nd, fhp, len, slp, nam, &info.nmi_md,
1951 : &info.nmi_dpos, &dirp, procp);
1952 0 : if (dirp) {
1953 0 : if (info.nmi_v3)
1954 0 : dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
1955 : procp);
1956 : else {
1957 0 : vrele(dirp);
1958 0 : dirp = NULL;
1959 : }
1960 : }
1961 0 : if (error) {
1962 0 : nfsm_reply(NFSX_WCCDATA(info.nmi_v3));
1963 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
1964 : &info);
1965 0 : if (dirp)
1966 0 : vrele(dirp);
1967 0 : return (0);
1968 : }
1969 0 : vp = nd.ni_vp;
1970 0 : if (vp->v_type != VDIR) {
1971 : error = ENOTDIR;
1972 0 : goto out;
1973 : }
1974 : /*
1975 : * No rmdir "." please.
1976 : */
1977 0 : if (nd.ni_dvp == vp) {
1978 : error = EINVAL;
1979 0 : goto out;
1980 : }
1981 : /*
1982 : * A mounted on directory cannot be deleted.
1983 : */
1984 0 : if (vp->v_mountedhere != NULL) {
1985 : error = EBUSY;
1986 0 : goto out;
1987 : }
1988 : /*
1989 : * The root of a mounted filesystem cannot be deleted.
1990 : */
1991 0 : if (vp->v_flag & VROOT)
1992 0 : error = EBUSY;
1993 : out:
1994 0 : if (!error) {
1995 0 : error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
1996 0 : } else {
1997 0 : VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1998 0 : if (nd.ni_dvp == nd.ni_vp)
1999 0 : vrele(nd.ni_dvp);
2000 : else
2001 0 : vput(nd.ni_dvp);
2002 0 : vput(vp);
2003 : }
2004 0 : if (dirp) {
2005 0 : diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
2006 0 : vrele(dirp);
2007 0 : }
2008 0 : nfsm_reply(NFSX_WCCDATA(info.nmi_v3));
2009 0 : if (info.nmi_v3) {
2010 0 : nfsm_srvwcc(nfsd, dirfor_ret, &dirfor, diraft_ret, &diraft,
2011 : &info);
2012 : error = 0;
2013 0 : }
2014 : nfsmout:
2015 0 : return(error);
2016 0 : }
2017 :
2018 : /*
2019 : * nfs readdir service
2020 : * - mallocs what it thinks is enough to read
2021 : * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2022 : * - calls VOP_READDIR()
2023 : * - loops around building the reply
2024 : * if the output generated exceeds count break out of loop
2025 : * - it only knows that it has encountered eof when the VOP_READDIR()
2026 : * reads nothing
2027 : * - as such one readdir rpc will return eof false although you are there
2028 : * and then the next will return eof
2029 : * - it trims out records with d_fileno == 0
2030 : * this doesn't matter for Unix clients, but they might confuse clients
2031 : * for other os'.
2032 : * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2033 : * than requested, but this may not apply to all filesystems. For
2034 : * example, client NFS does not { although it is never remote mounted
2035 : * anyhow }
2036 : * The alternate call nfsrv_readdirplus() does lookups as well.
2037 : * PS: The NFS protocol spec. does not clarify what the "count" byte
2038 : * argument is a count of.. just name strings and file id's or the
2039 : * entire reply rpc or ...
2040 : * I tried just file name and id sizes and it confused the Sun client,
2041 : * so I am using the full rpc size now. The "paranoia.." comment refers
2042 : * to including the status longwords that are not a part of the dir.
2043 : * "entry" structures, but are in the rpc.
2044 : */
2045 : struct flrep {
2046 : nfsuint64 fl_off;
2047 : u_int32_t fl_postopok;
2048 : u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2049 : u_int32_t fl_fhok;
2050 : u_int32_t fl_fhsize;
2051 : u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2052 : };
2053 :
2054 : int
2055 0 : nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2056 : struct proc *procp, struct mbuf **mrq)
2057 : {
2058 0 : struct mbuf *nam = nfsd->nd_nam;
2059 0 : struct ucred *cred = &nfsd->nd_cr;
2060 : struct dirent *dp;
2061 0 : struct nfsm_info info;
2062 : u_int32_t *tl;
2063 : int32_t t1;
2064 0 : char *cpos, *cend, *cp2, *rbuf;
2065 0 : struct vnode *vp;
2066 0 : struct vattr at;
2067 0 : nfsfh_t nfh;
2068 : fhandle_t *fhp;
2069 0 : struct uio io;
2070 0 : struct iovec iv;
2071 : int len, nlen, pad, xfer, error = 0, getret = 1;
2072 0 : int siz, cnt, fullsiz, eofflag, rdonly;
2073 : u_quad_t off, toff, verf;
2074 :
2075 0 : info.nmi_mreq = NULL;
2076 0 : info.nmi_mrep = nfsd->nd_mrep;
2077 0 : info.nmi_md = nfsd->nd_md;
2078 0 : info.nmi_dpos = nfsd->nd_dpos;
2079 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2080 :
2081 0 : fhp = &nfh.fh_generic;
2082 0 : nfsm_srvmtofh(fhp);
2083 0 : if (info.nmi_v3) {
2084 0 : nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2085 0 : toff = fxdr_hyper(tl);
2086 0 : tl += 2;
2087 0 : verf = fxdr_hyper(tl);
2088 0 : tl += 2;
2089 0 : } else {
2090 0 : nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2091 0 : toff = fxdr_unsigned(u_quad_t, *tl++);
2092 : }
2093 : off = toff;
2094 0 : cnt = fxdr_unsigned(int, *tl);
2095 0 : siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2096 0 : xfer = NFS_SRVMAXDATA(nfsd);
2097 0 : if (siz > xfer)
2098 0 : siz = xfer;
2099 0 : if (cnt > xfer)
2100 0 : cnt = xfer;
2101 : fullsiz = siz;
2102 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
2103 0 : if (error) {
2104 0 : nfsm_reply(NFSX_UNSIGNED);
2105 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2106 : error = 0;
2107 0 : goto nfsmout;
2108 : }
2109 0 : if (info.nmi_v3)
2110 0 : error = getret = VOP_GETATTR(vp, &at, cred, procp);
2111 0 : if (!error)
2112 0 : error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0);
2113 0 : if (error) {
2114 0 : vput(vp);
2115 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3));
2116 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2117 : error = 0;
2118 0 : goto nfsmout;
2119 : }
2120 0 : VOP_UNLOCK(vp);
2121 0 : rbuf = malloc(fullsiz, M_TEMP, M_WAITOK);
2122 : again:
2123 0 : iv.iov_base = rbuf;
2124 0 : iv.iov_len = fullsiz;
2125 0 : io.uio_iov = &iv;
2126 0 : io.uio_iovcnt = 1;
2127 0 : io.uio_offset = (off_t)off;
2128 0 : io.uio_resid = fullsiz;
2129 0 : io.uio_segflg = UIO_SYSSPACE;
2130 0 : io.uio_rw = UIO_READ;
2131 0 : io.uio_procp = NULL;
2132 0 : eofflag = 0;
2133 :
2134 0 : vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
2135 0 : error = VOP_READDIR(vp, &io, cred, &eofflag);
2136 :
2137 0 : off = (off_t)io.uio_offset;
2138 0 : if (info.nmi_v3) {
2139 0 : getret = VOP_GETATTR(vp, &at, cred, procp);
2140 0 : if (!error)
2141 0 : error = getret;
2142 : }
2143 :
2144 0 : VOP_UNLOCK(vp);
2145 0 : if (error) {
2146 0 : vrele(vp);
2147 0 : free(rbuf, M_TEMP, fullsiz);
2148 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3));
2149 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2150 : error = 0;
2151 0 : goto nfsmout;
2152 : }
2153 0 : if (io.uio_resid) {
2154 0 : siz -= io.uio_resid;
2155 :
2156 : /*
2157 : * If nothing read, return eof
2158 : * rpc reply
2159 : */
2160 0 : if (siz == 0) {
2161 0 : vrele(vp);
2162 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3) + NFSX_COOKIEVERF(info.nmi_v3) +
2163 : 2 * NFSX_UNSIGNED);
2164 0 : if (info.nmi_v3) {
2165 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2166 0 : tl = nfsm_build(&info.nmi_mb, 4 * NFSX_UNSIGNED);
2167 0 : txdr_hyper(at.va_filerev, tl);
2168 0 : tl += 2;
2169 0 : } else
2170 0 : tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
2171 0 : *tl++ = nfs_false;
2172 0 : *tl = nfs_true;
2173 0 : free(rbuf, M_TEMP, fullsiz);
2174 : error = 0;
2175 0 : goto nfsmout;
2176 : }
2177 : }
2178 :
2179 : /*
2180 : * Check for degenerate cases of nothing useful read.
2181 : * If so go try again
2182 : */
2183 : cpos = rbuf;
2184 0 : cend = rbuf + siz;
2185 0 : dp = (struct dirent *)cpos;
2186 :
2187 0 : while (cpos < cend && dp->d_fileno == 0) {
2188 0 : cpos += dp->d_reclen;
2189 0 : dp = (struct dirent *)cpos;
2190 : }
2191 0 : if (cpos >= cend) {
2192 : toff = off;
2193 : siz = fullsiz;
2194 0 : goto again;
2195 : }
2196 :
2197 : len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
2198 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3) + NFSX_COOKIEVERF(info.nmi_v3) + siz);
2199 0 : if (info.nmi_v3) {
2200 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2201 0 : tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
2202 0 : txdr_hyper(at.va_filerev, tl);
2203 0 : }
2204 :
2205 : /* Loop through the records and build reply */
2206 0 : while (cpos < cend) {
2207 0 : if (dp->d_fileno != 0) {
2208 0 : nlen = dp->d_namlen;
2209 0 : pad = nfsm_padlen(nlen);
2210 0 : len += (4 * NFSX_UNSIGNED + nlen + pad);
2211 0 : if (info.nmi_v3)
2212 0 : len += 2 * NFSX_UNSIGNED;
2213 0 : if (len > cnt) {
2214 0 : eofflag = 0;
2215 0 : break;
2216 : }
2217 : /*
2218 : * Build the directory record xdr from
2219 : * the dirent entry.
2220 : */
2221 0 : tl = nfsm_build(&info.nmi_mb,
2222 0 : (info.nmi_v3 ? 3 : 2) * NFSX_UNSIGNED);
2223 0 : *tl++ = nfs_true;
2224 0 : if (info.nmi_v3)
2225 0 : txdr_hyper(dp->d_fileno, tl);
2226 : else
2227 0 : *tl = txdr_unsigned((u_int32_t)dp->d_fileno);
2228 :
2229 : /* And copy the name */
2230 0 : nfsm_strtombuf(&info.nmi_mb, dp->d_name, nlen);
2231 :
2232 : /* Finish off the record */
2233 0 : if (info.nmi_v3) {
2234 0 : tl = nfsm_build(&info.nmi_mb, 2*NFSX_UNSIGNED);
2235 0 : txdr_hyper(dp->d_off, tl);
2236 0 : } else {
2237 0 : tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
2238 0 : *tl = txdr_unsigned((u_int32_t)dp->d_off);
2239 : }
2240 : }
2241 0 : cpos += dp->d_reclen;
2242 0 : dp = (struct dirent *)cpos;
2243 : }
2244 0 : vrele(vp);
2245 0 : tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
2246 0 : *tl++ = nfs_false;
2247 0 : if (eofflag)
2248 0 : *tl = nfs_true;
2249 : else
2250 0 : *tl = nfs_false;
2251 0 : free(rbuf, M_TEMP, fullsiz);
2252 : nfsmout:
2253 0 : return(error);
2254 0 : }
2255 :
2256 : int
2257 0 : nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2258 : struct proc *procp, struct mbuf **mrq)
2259 : {
2260 0 : struct mbuf *nam = nfsd->nd_nam;
2261 0 : struct ucred *cred = &nfsd->nd_cr;
2262 : struct dirent *dp;
2263 0 : struct nfsm_info info;
2264 : u_int32_t *tl;
2265 : int32_t t1;
2266 0 : char *cpos, *cend, *cp2, *rbuf;
2267 0 : struct vnode *vp, *nvp;
2268 0 : struct flrep fl;
2269 0 : nfsfh_t nfh;
2270 0 : fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
2271 0 : struct uio io;
2272 0 : struct iovec iv;
2273 0 : struct vattr va, at, *vap = &va;
2274 : struct nfs_fattr *fp;
2275 : int len, nlen, pad, xfer, error = 0, getret = 1;
2276 0 : int siz, cnt, fullsiz, eofflag, rdonly, dirlen;
2277 : u_quad_t off, toff, verf;
2278 :
2279 0 : info.nmi_mreq = NULL;
2280 0 : info.nmi_mrep = nfsd->nd_mrep;
2281 0 : info.nmi_md = nfsd->nd_md;
2282 0 : info.nmi_dpos = nfsd->nd_dpos;
2283 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2284 :
2285 0 : fhp = &nfh.fh_generic;
2286 0 : nfsm_srvmtofh(fhp);
2287 0 : nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
2288 0 : toff = fxdr_hyper(tl);
2289 0 : tl += 2;
2290 0 : verf = fxdr_hyper(tl);
2291 0 : tl += 2;
2292 0 : siz = fxdr_unsigned(int, *tl++);
2293 0 : cnt = fxdr_unsigned(int, *tl);
2294 : off = toff;
2295 0 : siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2296 0 : xfer = NFS_SRVMAXDATA(nfsd);
2297 0 : if (siz > xfer)
2298 0 : siz = xfer;
2299 0 : if (cnt > xfer)
2300 0 : cnt = xfer;
2301 : fullsiz = siz;
2302 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
2303 0 : if (error) {
2304 0 : nfsm_reply(NFSX_UNSIGNED);
2305 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2306 : error = 0;
2307 0 : goto nfsmout;
2308 : }
2309 0 : error = getret = VOP_GETATTR(vp, &at, cred, procp);
2310 0 : if (!error)
2311 0 : error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0);
2312 0 : if (error) {
2313 0 : vput(vp);
2314 0 : nfsm_reply(NFSX_V3POSTOPATTR);
2315 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2316 : error = 0;
2317 0 : goto nfsmout;
2318 : }
2319 0 : VOP_UNLOCK(vp);
2320 :
2321 0 : rbuf = malloc(fullsiz, M_TEMP, M_WAITOK);
2322 : again:
2323 0 : iv.iov_base = rbuf;
2324 0 : iv.iov_len = fullsiz;
2325 0 : io.uio_iov = &iv;
2326 0 : io.uio_iovcnt = 1;
2327 0 : io.uio_offset = (off_t)off;
2328 0 : io.uio_resid = fullsiz;
2329 0 : io.uio_segflg = UIO_SYSSPACE;
2330 0 : io.uio_rw = UIO_READ;
2331 0 : io.uio_procp = NULL;
2332 0 : eofflag = 0;
2333 :
2334 0 : vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
2335 0 : error = VOP_READDIR(vp, &io, cred, &eofflag);
2336 :
2337 0 : off = (u_quad_t)io.uio_offset;
2338 0 : getret = VOP_GETATTR(vp, &at, cred, procp);
2339 :
2340 0 : VOP_UNLOCK(vp);
2341 :
2342 0 : if (!error)
2343 0 : error = getret;
2344 0 : if (error) {
2345 0 : vrele(vp);
2346 0 : free(rbuf, M_TEMP, fullsiz);
2347 0 : nfsm_reply(NFSX_V3POSTOPATTR);
2348 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2349 : error = 0;
2350 0 : goto nfsmout;
2351 : }
2352 0 : if (io.uio_resid) {
2353 0 : siz -= io.uio_resid;
2354 :
2355 : /*
2356 : * If nothing read, return eof
2357 : * rpc reply
2358 : */
2359 0 : if (siz == 0) {
2360 0 : vrele(vp);
2361 0 : nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
2362 : 2 * NFSX_UNSIGNED);
2363 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2364 0 : tl = nfsm_build(&info.nmi_mb, 4 * NFSX_UNSIGNED);
2365 0 : txdr_hyper(at.va_filerev, tl);
2366 0 : tl += 2;
2367 0 : *tl++ = nfs_false;
2368 0 : *tl = nfs_true;
2369 0 : free(rbuf, M_TEMP, fullsiz);
2370 : error = 0;
2371 0 : goto nfsmout;
2372 : }
2373 : }
2374 :
2375 : /*
2376 : * Check for degenerate cases of nothing useful read.
2377 : * If so go try again
2378 : */
2379 : cpos = rbuf;
2380 0 : cend = rbuf + siz;
2381 0 : dp = (struct dirent *)cpos;
2382 :
2383 0 : while (cpos < cend && dp->d_fileno == 0) {
2384 0 : cpos += dp->d_reclen;
2385 0 : dp = (struct dirent *)cpos;
2386 : }
2387 0 : if (cpos >= cend) {
2388 : toff = off;
2389 : siz = fullsiz;
2390 0 : goto again;
2391 : }
2392 :
2393 : /*
2394 : * struct READDIRPLUS3resok {
2395 : * postop_attr dir_attributes;
2396 : * cookieverf3 cookieverf;
2397 : * dirlistplus3 reply;
2398 : * }
2399 : *
2400 : * struct dirlistplus3 {
2401 : * entryplus3 *entries;
2402 : * bool eof;
2403 : * }
2404 : */
2405 : dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
2406 0 : nfsm_reply(cnt);
2407 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2408 0 : tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
2409 0 : txdr_hyper(at.va_filerev, tl);
2410 :
2411 : /* Loop through the records and build reply */
2412 0 : while (cpos < cend) {
2413 0 : if (dp->d_fileno != 0) {
2414 0 : nlen = dp->d_namlen;
2415 0 : pad = nfsm_padlen(nlen);
2416 :
2417 : /*
2418 : * For readdir_and_lookup get the vnode using
2419 : * the file number.
2420 : */
2421 0 : if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp))
2422 : goto invalid;
2423 0 : memset(nfhp, 0, NFSX_V3FH);
2424 0 : nfhp->fh_fsid =
2425 0 : nvp->v_mount->mnt_stat.f_fsid;
2426 0 : if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
2427 0 : vput(nvp);
2428 0 : goto invalid;
2429 : }
2430 0 : if (VOP_GETATTR(nvp, vap, cred, procp)) {
2431 : vput(nvp);
2432 : goto invalid;
2433 : }
2434 : vput(nvp);
2435 :
2436 : /*
2437 : * If either the dircount or maxcount will be
2438 : * exceeded, get out now. Both of these lengths
2439 : * are calculated conservatively, including all
2440 : * XDR overheads.
2441 : *
2442 : * Each entry:
2443 : * 2 * NFSX_UNSIGNED for fileid3
2444 : * 1 * NFSX_UNSIGNED for length of name
2445 : * nlen + pad == space the name takes up
2446 : * 2 * NFSX_UNSIGNED for the cookie
2447 : * 1 * NFSX_UNSIGNED to indicate if file handle present
2448 : * 1 * NFSX_UNSIGNED for the file handle length
2449 : * NFSX_V3FH == space our file handle takes up
2450 : * NFSX_V3POSTOPATTR == space the attributes take up
2451 : * 1 * NFSX_UNSIGNED for next pointer
2452 : */
2453 0 : len += (8 * NFSX_UNSIGNED + nlen + pad + NFSX_V3FH +
2454 : NFSX_V3POSTOPATTR);
2455 0 : dirlen += (6 * NFSX_UNSIGNED + nlen + pad);
2456 0 : if (len > cnt || dirlen > fullsiz) {
2457 0 : eofflag = 0;
2458 0 : break;
2459 : }
2460 :
2461 0 : tl = nfsm_build(&info.nmi_mb, 3 * NFSX_UNSIGNED);
2462 0 : *tl++ = nfs_true;
2463 0 : txdr_hyper(dp->d_fileno, tl);
2464 :
2465 : /* And copy the name */
2466 0 : nfsm_strtombuf(&info.nmi_mb, dp->d_name, nlen);
2467 :
2468 : /*
2469 : * Build the directory record xdr from
2470 : * the dirent entry.
2471 : */
2472 0 : fp = (struct nfs_fattr *)&fl.fl_fattr;
2473 0 : nfsm_srvfattr(nfsd, vap, fp);
2474 0 : fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
2475 0 : fl.fl_fhok = nfs_true;
2476 0 : fl.fl_postopok = nfs_true;
2477 0 : txdr_hyper(dp->d_off, fl.fl_off.nfsuquad);
2478 :
2479 : /* Now copy the flrep structure out. */
2480 0 : nfsm_buftombuf(&info.nmi_mb, &fl, sizeof(struct flrep));
2481 0 : }
2482 : invalid:
2483 0 : cpos += dp->d_reclen;
2484 0 : dp = (struct dirent *)cpos;
2485 : }
2486 0 : vrele(vp);
2487 0 : tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
2488 0 : *tl++ = nfs_false;
2489 0 : if (eofflag)
2490 0 : *tl = nfs_true;
2491 : else
2492 0 : *tl = nfs_false;
2493 0 : free(rbuf, M_TEMP, fullsiz);
2494 : nfsmout:
2495 0 : return(error);
2496 0 : }
2497 :
2498 : /*
2499 : * nfs commit service
2500 : */
2501 : int
2502 0 : nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2503 : struct proc *procp, struct mbuf **mrq)
2504 : {
2505 0 : struct mbuf *nam = nfsd->nd_nam;
2506 0 : struct ucred *cred = &nfsd->nd_cr;
2507 0 : struct vattr bfor, aft;
2508 0 : struct vnode *vp;
2509 0 : struct nfsm_info info;
2510 0 : nfsfh_t nfh;
2511 : fhandle_t *fhp;
2512 : u_int32_t *tl;
2513 : int32_t t1;
2514 0 : int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt;
2515 0 : char *cp2;
2516 : u_quad_t off;
2517 :
2518 0 : info.nmi_mreq = NULL;
2519 0 : info.nmi_mrep = nfsd->nd_mrep;
2520 0 : info.nmi_md = nfsd->nd_md;
2521 0 : info.nmi_dpos = nfsd->nd_dpos;
2522 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2523 :
2524 0 : fhp = &nfh.fh_generic;
2525 0 : nfsm_srvmtofh(fhp);
2526 0 : nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2527 :
2528 : /*
2529 : * XXX At this time VOP_FSYNC() does not accept offset and byte
2530 : * count parameters, so these arguments are useless (someday maybe).
2531 : */
2532 0 : off = fxdr_hyper(tl);
2533 0 : tl += 2;
2534 0 : cnt = fxdr_unsigned(int, *tl);
2535 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
2536 0 : if (error) {
2537 0 : nfsm_reply(2 * NFSX_UNSIGNED);
2538 0 : nfsm_srvwcc(nfsd, for_ret, &bfor, aft_ret, &aft, &info);
2539 : error = 0;
2540 0 : goto nfsmout;
2541 : }
2542 0 : for_ret = VOP_GETATTR(vp, &bfor, cred, procp);
2543 0 : error = VOP_FSYNC(vp, cred, MNT_WAIT, procp);
2544 0 : aft_ret = VOP_GETATTR(vp, &aft, cred, procp);
2545 0 : vput(vp);
2546 0 : nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
2547 0 : nfsm_srvwcc(nfsd, for_ret, &bfor, aft_ret, &aft, &info);
2548 0 : if (!error) {
2549 0 : tl = nfsm_build(&info.nmi_mb, NFSX_V3WRITEVERF);
2550 0 : *tl++ = txdr_unsigned(boottime.tv_sec);
2551 0 : *tl = txdr_unsigned(boottime.tv_nsec/1000);
2552 0 : } else
2553 : error = 0;
2554 : nfsmout:
2555 0 : return(error);
2556 0 : }
2557 :
2558 : /*
2559 : * nfs statfs service
2560 : */
2561 : int
2562 0 : nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2563 : struct proc *procp, struct mbuf **mrq)
2564 : {
2565 0 : struct mbuf *nam = nfsd->nd_nam;
2566 0 : struct ucred *cred = &nfsd->nd_cr;
2567 : struct statfs *sf;
2568 : struct nfs_statfs *sfp;
2569 0 : struct nfsm_info info;
2570 : u_int32_t *tl;
2571 : int32_t t1;
2572 0 : int error = 0, rdonly, getret = 1;
2573 0 : char *cp2;
2574 0 : struct vnode *vp;
2575 0 : struct vattr at;
2576 0 : nfsfh_t nfh;
2577 : fhandle_t *fhp;
2578 0 : struct statfs statfs;
2579 : u_quad_t tval;
2580 :
2581 0 : info.nmi_mreq = NULL;
2582 0 : info.nmi_mrep = nfsd->nd_mrep;
2583 0 : info.nmi_md = nfsd->nd_md;
2584 0 : info.nmi_dpos = nfsd->nd_dpos;
2585 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2586 :
2587 0 : fhp = &nfh.fh_generic;
2588 0 : nfsm_srvmtofh(fhp);
2589 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
2590 0 : if (error) {
2591 0 : nfsm_reply(NFSX_UNSIGNED);
2592 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2593 : error = 0;
2594 0 : goto nfsmout;
2595 : }
2596 : sf = &statfs;
2597 0 : error = VFS_STATFS(vp->v_mount, sf, procp);
2598 0 : getret = VOP_GETATTR(vp, &at, cred, procp);
2599 0 : vput(vp);
2600 0 : nfsm_reply(NFSX_POSTOPATTR(info.nmi_v3) + NFSX_STATFS(info.nmi_v3));
2601 0 : if (info.nmi_v3)
2602 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2603 0 : if (error) {
2604 : error = 0;
2605 0 : goto nfsmout;
2606 : }
2607 0 : sfp = nfsm_build(&info.nmi_mb, NFSX_STATFS(info.nmi_v3));
2608 0 : if (info.nmi_v3) {
2609 0 : tval = (u_quad_t)sf->f_blocks;
2610 0 : tval *= (u_quad_t)sf->f_bsize;
2611 0 : txdr_hyper(tval, &sfp->sf_tbytes);
2612 0 : tval = (u_quad_t)sf->f_bfree;
2613 0 : tval *= (u_quad_t)sf->f_bsize;
2614 0 : txdr_hyper(tval, &sfp->sf_fbytes);
2615 0 : tval = (u_quad_t)sf->f_bavail;
2616 0 : tval *= (u_quad_t)sf->f_bsize;
2617 0 : txdr_hyper(tval, &sfp->sf_abytes);
2618 0 : tval = (u_quad_t)sf->f_files;
2619 0 : txdr_hyper(tval, &sfp->sf_tfiles);
2620 0 : tval = (u_quad_t)sf->f_ffree;
2621 0 : txdr_hyper(tval, &sfp->sf_ffiles);
2622 0 : txdr_hyper(tval, &sfp->sf_afiles);
2623 0 : sfp->sf_invarsec = 0;
2624 0 : } else {
2625 0 : sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
2626 0 : sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
2627 0 : sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
2628 0 : sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
2629 0 : sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
2630 : }
2631 : nfsmout:
2632 0 : return(error);
2633 0 : }
2634 :
2635 : /*
2636 : * nfs fsinfo service
2637 : */
2638 : int
2639 0 : nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2640 : struct proc *procp, struct mbuf **mrq)
2641 : {
2642 0 : struct mbuf *nam = nfsd->nd_nam;
2643 0 : struct ucred *cred = &nfsd->nd_cr;
2644 0 : struct nfsm_info info;
2645 : u_int32_t *tl;
2646 : struct nfsv3_fsinfo *sip;
2647 : int32_t t1;
2648 0 : int error = 0, rdonly, getret = 1, pref;
2649 0 : char *cp2;
2650 0 : struct vnode *vp;
2651 0 : struct vattr at;
2652 0 : nfsfh_t nfh;
2653 : fhandle_t *fhp;
2654 :
2655 0 : info.nmi_mreq = NULL;
2656 0 : info.nmi_mrep = nfsd->nd_mrep;
2657 0 : info.nmi_md = nfsd->nd_md;
2658 0 : info.nmi_dpos = nfsd->nd_dpos;
2659 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2660 :
2661 0 : fhp = &nfh.fh_generic;
2662 0 : nfsm_srvmtofh(fhp);
2663 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
2664 0 : if (error) {
2665 0 : nfsm_reply(NFSX_UNSIGNED);
2666 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2667 : error = 0;
2668 0 : goto nfsmout;
2669 : }
2670 0 : getret = VOP_GETATTR(vp, &at, cred, procp);
2671 0 : vput(vp);
2672 0 : nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
2673 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2674 0 : sip = nfsm_build(&info.nmi_mb, NFSX_V3FSINFO);
2675 :
2676 : /*
2677 : * XXX
2678 : * There should be file system VFS OP(s) to get this information.
2679 : * For now, assume ufs.
2680 : */
2681 0 : if (slp->ns_so->so_type == SOCK_DGRAM)
2682 0 : pref = NFS_MAXDGRAMDATA;
2683 : else
2684 : pref = NFS_MAXDATA;
2685 0 : sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
2686 0 : sip->fs_rtpref = txdr_unsigned(pref);
2687 0 : sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
2688 0 : sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
2689 0 : sip->fs_wtpref = txdr_unsigned(pref);
2690 0 : sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
2691 0 : sip->fs_dtpref = txdr_unsigned(pref);
2692 0 : sip->fs_maxfilesize.nfsuquad[0] = 0xffffffff;
2693 0 : sip->fs_maxfilesize.nfsuquad[1] = 0xffffffff;
2694 0 : sip->fs_timedelta.nfsv3_sec = 0;
2695 0 : sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
2696 0 : sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
2697 : NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
2698 : NFSV3FSINFO_CANSETTIME);
2699 : nfsmout:
2700 0 : return(error);
2701 0 : }
2702 :
2703 : /*
2704 : * nfs pathconf service
2705 : */
2706 : int
2707 0 : nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2708 : struct proc *procp, struct mbuf **mrq)
2709 : {
2710 0 : struct mbuf *nam = nfsd->nd_nam;
2711 0 : struct ucred *cred = &nfsd->nd_cr;
2712 0 : struct nfsm_info info;
2713 : u_int32_t *tl;
2714 : struct nfsv3_pathconf *pc;
2715 : int32_t t1;
2716 0 : int error = 0, rdonly, getret = 1;
2717 0 : register_t linkmax, namemax, chownres, notrunc;
2718 0 : char *cp2;
2719 0 : struct vnode *vp;
2720 0 : struct vattr at;
2721 0 : nfsfh_t nfh;
2722 : fhandle_t *fhp;
2723 :
2724 0 : info.nmi_mreq = NULL;
2725 0 : info.nmi_mrep = nfsd->nd_mrep;
2726 0 : info.nmi_md = nfsd->nd_md;
2727 0 : info.nmi_dpos = nfsd->nd_dpos;
2728 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2729 :
2730 0 : fhp = &nfh.fh_generic;
2731 0 : nfsm_srvmtofh(fhp);
2732 0 : error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly);
2733 0 : if (error) {
2734 0 : nfsm_reply(NFSX_UNSIGNED);
2735 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2736 : error = 0;
2737 0 : goto nfsmout;
2738 : }
2739 0 : error = VOP_PATHCONF(vp, _PC_LINK_MAX, &linkmax);
2740 0 : if (!error)
2741 0 : error = VOP_PATHCONF(vp, _PC_NAME_MAX, &namemax);
2742 0 : if (!error)
2743 0 : error = VOP_PATHCONF(vp, _PC_CHOWN_RESTRICTED, &chownres);
2744 0 : if (!error)
2745 0 : error = VOP_PATHCONF(vp, _PC_NO_TRUNC, ¬runc);
2746 0 : getret = VOP_GETATTR(vp, &at, cred, procp);
2747 0 : vput(vp);
2748 0 : nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3PATHCONF);
2749 0 : nfsm_srvpostop_attr(nfsd, getret, &at, &info);
2750 0 : if (error) {
2751 : error = 0;
2752 0 : goto nfsmout;
2753 : }
2754 0 : pc = nfsm_build(&info.nmi_mb, NFSX_V3PATHCONF);
2755 :
2756 0 : pc->pc_linkmax = txdr_unsigned(linkmax);
2757 0 : pc->pc_namemax = txdr_unsigned(namemax);
2758 0 : pc->pc_notrunc = txdr_unsigned(notrunc);
2759 0 : pc->pc_chownrestricted = txdr_unsigned(chownres);
2760 :
2761 : /*
2762 : * These should probably be supported by VOP_PATHCONF(), but
2763 : * until msdosfs is exportable (why would you want to?), the
2764 : * Unix defaults should be ok.
2765 : */
2766 0 : pc->pc_caseinsensitive = nfs_false;
2767 0 : pc->pc_casepreserving = nfs_true;
2768 : nfsmout:
2769 0 : return(error);
2770 0 : }
2771 :
2772 : /*
2773 : * Null operation, used by clients to ping server
2774 : */
2775 : /* ARGSUSED */
2776 : int
2777 0 : nfsrv_null(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2778 : struct proc *procp, struct mbuf **mrq)
2779 : {
2780 0 : struct nfsm_info info;
2781 : int error = NFSERR_RETVOID;
2782 :
2783 0 : info.nmi_mreq = NULL;
2784 0 : info.nmi_mrep = nfsd->nd_mrep;
2785 0 : info.nmi_md = nfsd->nd_md;
2786 0 : info.nmi_dpos = nfsd->nd_dpos;
2787 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2788 :
2789 0 : nfsm_reply(0);
2790 0 : return (0);
2791 0 : }
2792 :
2793 : /*
2794 : * No operation, used for obsolete procedures
2795 : */
2796 : /* ARGSUSED */
2797 : int
2798 0 : nfsrv_noop(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2799 : struct proc *procp, struct mbuf **mrq)
2800 : {
2801 0 : struct nfsm_info info;
2802 : int error;
2803 :
2804 0 : info.nmi_mreq = NULL;
2805 0 : info.nmi_mrep = nfsd->nd_mrep;
2806 0 : info.nmi_md = nfsd->nd_md;
2807 0 : info.nmi_dpos = nfsd->nd_dpos;
2808 0 : info.nmi_v3 = (nfsd->nd_flag & ND_NFSV3);
2809 :
2810 0 : if (nfsd->nd_repstat)
2811 0 : error = nfsd->nd_repstat;
2812 : else
2813 : error = EPROCUNAVAIL;
2814 0 : nfsm_reply(0);
2815 0 : return (0);
2816 0 : }
2817 :
2818 : /*
2819 : * Perform access checking for vnodes obtained from file handles that would
2820 : * refer to files already opened by a Unix client.
2821 : * You cannot just use vn_writechk() and VOP_ACCESS() for two reasons:
2822 : * 1 - You must check for exported rdonly as well as MNT_RDONLY for the
2823 : * write case
2824 : * 2 - The owner is to be given access irrespective of mode bits for some
2825 : * operations, so that processes that chmod after opening a file don't
2826 : * break. I don't like this because it opens a security hole, but since
2827 : * the nfs server opens a security hole the size of a barn door anyhow,
2828 : * what the heck. A notable exception to this rule is when VOP_ACCESS()
2829 : * returns EPERM (e.g. when a file is immutable) which is always an
2830 : * error.
2831 : */
2832 : int
2833 0 : nfsrv_access(struct vnode *vp, int flags, struct ucred *cred, int rdonly,
2834 : struct proc *p, int override)
2835 : {
2836 0 : struct vattr vattr;
2837 : int error;
2838 :
2839 0 : if (flags & VWRITE) {
2840 : /* Just vn_writechk() changed to check rdonly */
2841 : /*
2842 : * Disallow write attempts on read-only file systems;
2843 : * unless the file is a socket or a block or character
2844 : * device resident on the file system.
2845 : */
2846 0 : if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
2847 0 : switch (vp->v_type) {
2848 : case VREG:
2849 : case VDIR:
2850 : case VLNK:
2851 0 : return (EROFS);
2852 : default:
2853 : break;
2854 : }
2855 : }
2856 : /*
2857 : * If there's shared text associated with
2858 : * the inode, try to free it up once. If
2859 : * we fail, we can't allow writing.
2860 : */
2861 0 : if ((vp->v_flag & VTEXT) && !uvm_vnp_uncache(vp))
2862 0 : return (ETXTBSY);
2863 : }
2864 0 : error = VOP_ACCESS(vp, flags, cred, p);
2865 : /*
2866 : * Allow certain operations for the owner (reads and writes
2867 : * on files that are already open).
2868 : */
2869 0 : if (override && error == EACCES &&
2870 0 : VOP_GETATTR(vp, &vattr, cred, p) == 0 &&
2871 0 : cred->cr_uid == vattr.va_uid)
2872 0 : error = 0;
2873 0 : return error;
2874 0 : }
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