2 * Server-side procedures for NFSv4.
4 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <linux/file.h>
36 #include <linux/slab.h>
43 #define NFSDDBG_FACILITY NFSDDBG_PROC
45 static u32 nfsd_attrmask[] = {
46 NFSD_WRITEABLE_ATTRS_WORD0,
47 NFSD_WRITEABLE_ATTRS_WORD1,
48 NFSD_WRITEABLE_ATTRS_WORD2
51 static u32 nfsd41_ex_attrmask[] = {
52 NFSD_SUPPATTR_EXCLCREAT_WORD0,
53 NFSD_SUPPATTR_EXCLCREAT_WORD1,
54 NFSD_SUPPATTR_EXCLCREAT_WORD2
58 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
59 u32 *bmval, u32 *writable)
61 struct dentry *dentry = cstate->current_fh.fh_dentry;
64 * Check about attributes are supported by the NFSv4 server or not.
65 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
67 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
68 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
69 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
70 return nfserr_attrnotsupp;
73 * Check FATTR4_WORD0_ACL can be supported
74 * in current environment or not.
76 if (bmval[0] & FATTR4_WORD0_ACL) {
77 if (!IS_POSIXACL(dentry->d_inode))
78 return nfserr_attrnotsupp;
82 * According to spec, read-only attributes return ERR_INVAL.
85 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
86 (bmval[2] & ~writable[2]))
94 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
95 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
97 __be32 status = nfs_ok;
99 if (open->op_create == NFS4_OPEN_CREATE) {
100 if (open->op_createmode == NFS4_CREATE_UNCHECKED
101 || open->op_createmode == NFS4_CREATE_GUARDED)
102 status = check_attr_support(rqstp, cstate,
103 open->op_bmval, nfsd_attrmask);
104 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
105 status = check_attr_support(rqstp, cstate,
106 open->op_bmval, nfsd41_ex_attrmask);
113 is_create_with_attrs(struct nfsd4_open *open)
115 return open->op_create == NFS4_OPEN_CREATE
116 && (open->op_createmode == NFS4_CREATE_UNCHECKED
117 || open->op_createmode == NFS4_CREATE_GUARDED
118 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
122 * if error occurs when setting the acl, just clear the acl bit
123 * in the returned attr bitmap.
126 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
127 struct nfs4_acl *acl, u32 *bmval)
131 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
134 * We should probably fail the whole open at this point,
135 * but we've already created the file, so it's too late;
136 * So this seems the least of evils:
138 bmval[0] &= ~FATTR4_WORD0_ACL;
142 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
145 dget(src->fh_dentry);
147 cache_get(&src->fh_export->h);
152 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
156 if (open->op_truncate &&
157 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
160 accmode |= NFSD_MAY_READ_IF_EXEC;
162 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
163 accmode |= NFSD_MAY_READ;
164 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
165 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
166 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
167 accmode |= NFSD_MAY_WRITE;
169 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
174 static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
176 umode_t mode = fh->fh_dentry->d_inode->i_mode;
183 * Using err_symlink as our catch-all case may look odd; but
184 * there's no other obvious error for this case in 4.0, and we
185 * happen to know that it will cause the linux v4 client to do
186 * the right thing on attempts to open something other than a
189 return nfserr_symlink;
193 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
198 fh_init(&resfh, NFS4_FHSIZE);
199 open->op_truncate = 0;
201 if (open->op_create) {
202 /* FIXME: check session persistence and pnfs flags.
203 * The nfsv4.1 spec requires the following semantics:
205 * Persistent | pNFS | Server REQUIRED | Client Allowed
206 * Reply Cache | server | |
207 * -------------+--------+-----------------+--------------------
208 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
210 * | | and EXCLUSIVE4 | or EXCLUSIVE4
212 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
213 * yes | no | GUARDED4 | GUARDED4
214 * yes | yes | GUARDED4 | GUARDED4
218 * Note: create modes (UNCHECKED,GUARDED...) are the same
219 * in NFSv4 as in v3 except EXCLUSIVE4_1.
221 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
222 open->op_fname.len, &open->op_iattr,
223 &resfh, open->op_createmode,
224 (u32 *)open->op_verf.data,
225 &open->op_truncate, &open->op_created);
228 * Following rfc 3530 14.2.16, use the returned bitmask
229 * to indicate which attributes we used to store the
232 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
233 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
234 FATTR4_WORD1_TIME_MODIFY);
236 status = nfsd_lookup(rqstp, current_fh,
237 open->op_fname.data, open->op_fname.len, &resfh);
238 fh_unlock(current_fh);
241 status = nfsd_check_obj_isreg(&resfh);
246 if (is_create_with_attrs(open) && open->op_acl != NULL)
247 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
249 set_change_info(&open->op_cinfo, current_fh);
250 fh_dup2(current_fh, &resfh);
252 /* set reply cache */
253 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
255 if (!open->op_created)
256 status = do_open_permission(rqstp, current_fh, open,
265 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
269 /* We don't know the target directory, and therefore can not
270 * set the change info
273 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
275 /* set replay cache */
276 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
277 ¤t_fh->fh_handle);
279 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
280 (open->op_iattr.ia_size == 0);
282 status = do_open_permission(rqstp, current_fh, open,
283 NFSD_MAY_OWNER_OVERRIDE);
289 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
291 struct nfsd4_sessionid *sid =
292 (struct nfsd4_sessionid *)session->se_sessionid.data;
294 clid->cl_boot = sid->clientid.cl_boot;
295 clid->cl_id = sid->clientid.cl_id;
299 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
300 struct nfsd4_open *open)
303 struct nfsd4_compoundres *resp;
305 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
306 (int)open->op_fname.len, open->op_fname.data,
309 /* This check required by spec. */
310 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
313 /* We don't yet support WANT bits: */
314 open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
316 open->op_created = 0;
319 * Before RECLAIM_COMPLETE done, server should deny new lock
321 if (nfsd4_has_session(cstate) &&
322 !cstate->session->se_client->cl_firststate &&
323 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
326 if (nfsd4_has_session(cstate))
327 copy_clientid(&open->op_clientid, cstate->session);
331 /* check seqid for replay. set nfs4_owner */
332 resp = rqstp->rq_resp;
333 status = nfsd4_process_open1(&resp->cstate, open);
334 if (status == nfserr_replay_me) {
335 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
336 fh_put(&cstate->current_fh);
337 fh_copy_shallow(&cstate->current_fh.fh_handle,
339 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
341 dprintk("nfsd4_open: replay failed"
342 " restoring previous filehandle\n");
344 status = nfserr_replay_me;
349 status = nfsd4_check_open_attributes(rqstp, cstate, open);
353 /* Openowner is now set, so sequence id will get bumped. Now we need
354 * these checks before we do any creates: */
355 status = nfserr_grace;
356 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
358 status = nfserr_no_grace;
359 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
362 switch (open->op_claim_type) {
363 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
364 case NFS4_OPEN_CLAIM_NULL:
365 status = do_open_lookup(rqstp, &cstate->current_fh,
370 case NFS4_OPEN_CLAIM_PREVIOUS:
371 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
372 status = nfs4_check_open_reclaim(&open->op_clientid);
375 case NFS4_OPEN_CLAIM_FH:
376 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
377 status = do_open_fhandle(rqstp, &cstate->current_fh,
382 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
383 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
384 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
385 dprintk("NFSD: unsupported OPEN claim type %d\n",
386 open->op_claim_type);
387 status = nfserr_notsupp;
390 dprintk("NFSD: Invalid OPEN claim type %d\n",
391 open->op_claim_type);
392 status = nfserr_inval;
396 * nfsd4_process_open2() does the actual opening of the file. If
397 * successful, it (1) truncates the file if open->op_truncate was
398 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
400 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
401 WARN_ON(status && open->op_created);
403 nfsd4_cleanup_open_state(open, status);
404 if (open->op_openowner)
405 cstate->replay_owner = &open->op_openowner->oo_owner;
412 * filehandle-manipulating ops.
415 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
416 struct svc_fh **getfh)
418 if (!cstate->current_fh.fh_dentry)
419 return nfserr_nofilehandle;
421 *getfh = &cstate->current_fh;
426 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
427 struct nfsd4_putfh *putfh)
429 fh_put(&cstate->current_fh);
430 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
431 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
433 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
437 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
442 fh_put(&cstate->current_fh);
443 status = exp_pseudoroot(rqstp, &cstate->current_fh);
448 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
451 if (!cstate->save_fh.fh_dentry)
452 return nfserr_restorefh;
454 fh_dup2(&cstate->current_fh, &cstate->save_fh);
459 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
462 if (!cstate->current_fh.fh_dentry)
463 return nfserr_nofilehandle;
465 fh_dup2(&cstate->save_fh, &cstate->current_fh);
473 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
474 struct nfsd4_access *access)
476 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
479 access->ac_resp_access = access->ac_req_access;
480 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
481 &access->ac_supported);
485 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
486 struct nfsd4_commit *commit)
488 u32 *p = (u32 *)commit->co_verf.data;
489 *p++ = nfssvc_boot.tv_sec;
490 *p++ = nfssvc_boot.tv_usec;
492 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
497 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
498 struct nfsd4_create *create)
504 fh_init(&resfh, NFS4_FHSIZE);
506 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
511 status = check_attr_support(rqstp, cstate, create->cr_bmval,
516 switch (create->cr_type) {
518 /* ugh! we have to null-terminate the linktext, or
519 * vfs_symlink() will choke. it is always safe to
520 * null-terminate by brute force, since at worst we
521 * will overwrite the first byte of the create namelen
522 * in the XDR buffer, which has already been extracted
525 create->cr_linkname[create->cr_linklen] = 0;
527 status = nfsd_symlink(rqstp, &cstate->current_fh,
528 create->cr_name, create->cr_namelen,
529 create->cr_linkname, create->cr_linklen,
530 &resfh, &create->cr_iattr);
534 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
535 if (MAJOR(rdev) != create->cr_specdata1 ||
536 MINOR(rdev) != create->cr_specdata2)
538 status = nfsd_create(rqstp, &cstate->current_fh,
539 create->cr_name, create->cr_namelen,
540 &create->cr_iattr, S_IFBLK, rdev, &resfh);
544 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
545 if (MAJOR(rdev) != create->cr_specdata1 ||
546 MINOR(rdev) != create->cr_specdata2)
548 status = nfsd_create(rqstp, &cstate->current_fh,
549 create->cr_name, create->cr_namelen,
550 &create->cr_iattr,S_IFCHR, rdev, &resfh);
554 status = nfsd_create(rqstp, &cstate->current_fh,
555 create->cr_name, create->cr_namelen,
556 &create->cr_iattr, S_IFSOCK, 0, &resfh);
560 status = nfsd_create(rqstp, &cstate->current_fh,
561 create->cr_name, create->cr_namelen,
562 &create->cr_iattr, S_IFIFO, 0, &resfh);
566 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
567 status = nfsd_create(rqstp, &cstate->current_fh,
568 create->cr_name, create->cr_namelen,
569 &create->cr_iattr, S_IFDIR, 0, &resfh);
573 status = nfserr_badtype;
579 if (create->cr_acl != NULL)
580 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
583 fh_unlock(&cstate->current_fh);
584 set_change_info(&create->cr_cinfo, &cstate->current_fh);
585 fh_dup2(&cstate->current_fh, &resfh);
592 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
593 struct nfsd4_getattr *getattr)
597 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
601 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
604 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
605 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
606 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
608 getattr->ga_fhp = &cstate->current_fh;
613 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
614 struct nfsd4_link *link)
616 __be32 status = nfserr_nofilehandle;
618 if (!cstate->save_fh.fh_dentry)
620 status = nfsd_link(rqstp, &cstate->current_fh,
621 link->li_name, link->li_namelen, &cstate->save_fh);
623 set_change_info(&link->li_cinfo, &cstate->current_fh);
627 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
629 struct svc_fh tmp_fh;
632 fh_init(&tmp_fh, NFS4_FHSIZE);
633 ret = exp_pseudoroot(rqstp, &tmp_fh);
636 if (tmp_fh.fh_dentry == fh->fh_dentry) {
641 return nfsd_lookup(rqstp, fh, "..", 2, fh);
645 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
648 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
652 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
653 struct nfsd4_lookup *lookup)
655 return nfsd_lookup(rqstp, &cstate->current_fh,
656 lookup->lo_name, lookup->lo_len,
657 &cstate->current_fh);
661 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
662 struct nfsd4_read *read)
666 /* no need to check permission - this will be done in nfsd_read() */
668 read->rd_filp = NULL;
669 if (read->rd_offset >= OFFSET_MAX)
674 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
675 RD_STATE, &read->rd_filp))) {
676 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
680 get_file(read->rd_filp);
684 read->rd_rqstp = rqstp;
685 read->rd_fhp = &cstate->current_fh;
690 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
691 struct nfsd4_readdir *readdir)
693 u64 cookie = readdir->rd_cookie;
694 static const nfs4_verifier zeroverf;
696 /* no need to check permission - this will be done in nfsd_readdir() */
698 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
701 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
702 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
703 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
705 if ((cookie == 1) || (cookie == 2) ||
706 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
707 return nfserr_bad_cookie;
709 readdir->rd_rqstp = rqstp;
710 readdir->rd_fhp = &cstate->current_fh;
715 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
716 struct nfsd4_readlink *readlink)
718 readlink->rl_rqstp = rqstp;
719 readlink->rl_fhp = &cstate->current_fh;
724 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
725 struct nfsd4_remove *remove)
729 if (locks_in_grace())
731 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
732 remove->rm_name, remove->rm_namelen);
734 fh_unlock(&cstate->current_fh);
735 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
741 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
742 struct nfsd4_rename *rename)
744 __be32 status = nfserr_nofilehandle;
746 if (!cstate->save_fh.fh_dentry)
748 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
749 & NFSEXP_NOSUBTREECHECK))
751 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
752 rename->rn_snamelen, &cstate->current_fh,
753 rename->rn_tname, rename->rn_tnamelen);
755 /* the underlying filesystem returns different error's than required
756 * by NFSv4. both save_fh and current_fh have been verified.. */
757 if (status == nfserr_isdir)
758 status = nfserr_exist;
759 else if ((status == nfserr_notdir) &&
760 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
761 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
762 status = nfserr_exist;
765 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
766 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
772 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
773 struct nfsd4_secinfo *secinfo)
776 struct svc_export *exp;
777 struct dentry *dentry;
780 fh_init(&resfh, NFS4_FHSIZE);
781 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
784 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
785 secinfo->si_name, secinfo->si_namelen,
789 if (dentry->d_inode == NULL) {
793 secinfo->si_exp = exp;
795 if (cstate->minorversion)
796 /* See rfc 5661 section 2.6.3.1.1.8 */
797 fh_put(&cstate->current_fh);
802 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
803 struct nfsd4_secinfo_no_name *sin)
807 switch (sin->sin_style) {
808 case NFS4_SECINFO_STYLE4_CURRENT_FH:
810 case NFS4_SECINFO_STYLE4_PARENT:
811 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
818 exp_get(cstate->current_fh.fh_export);
819 sin->sin_exp = cstate->current_fh.fh_export;
820 fh_put(&cstate->current_fh);
825 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
826 struct nfsd4_setattr *setattr)
828 __be32 status = nfs_ok;
830 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
832 status = nfs4_preprocess_stateid_op(cstate,
833 &setattr->sa_stateid, WR_STATE, NULL);
836 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
840 status = fh_want_write(&cstate->current_fh);
845 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
850 if (setattr->sa_acl != NULL)
851 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
855 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
858 fh_drop_write(&cstate->current_fh);
863 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
864 struct nfsd4_write *write)
866 stateid_t *stateid = &write->wr_stateid;
867 struct file *filp = NULL;
869 __be32 status = nfs_ok;
872 /* no need to check permission - this will be done in nfsd_write() */
874 if (write->wr_offset >= OFFSET_MAX)
878 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
884 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
888 cnt = write->wr_buflen;
889 write->wr_how_written = write->wr_stable_how;
890 p = (u32 *)write->wr_verifier.data;
891 *p++ = nfssvc_boot.tv_sec;
892 *p++ = nfssvc_boot.tv_usec;
894 status = nfsd_write(rqstp, &cstate->current_fh, filp,
895 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
896 &cnt, &write->wr_how_written);
900 write->wr_bytes_written = cnt;
905 /* This routine never returns NFS_OK! If there are no other errors, it
906 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
907 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
908 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
911 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
912 struct nfsd4_verify *verify)
918 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
922 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
926 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
927 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
929 if (verify->ve_attrlen & 3)
933 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
935 count = 4 + (verify->ve_attrlen >> 2);
936 buf = kmalloc(count << 2, GFP_KERNEL);
938 return nfserr_jukebox;
940 status = nfsd4_encode_fattr(&cstate->current_fh,
941 cstate->current_fh.fh_export,
942 cstate->current_fh.fh_dentry, buf,
943 &count, verify->ve_bmval,
946 /* this means that nfsd4_encode_fattr() ran out of space */
947 if (status == nfserr_resource && count == 0)
948 status = nfserr_not_same;
953 p = buf + 1 + ntohl(buf[0]);
954 status = nfserr_not_same;
955 if (ntohl(*p++) != verify->ve_attrlen)
957 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
958 status = nfserr_same;
966 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
967 struct nfsd4_verify *verify)
971 status = _nfsd4_verify(rqstp, cstate, verify);
972 return status == nfserr_not_same ? nfs_ok : status;
976 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
977 struct nfsd4_verify *verify)
981 status = _nfsd4_verify(rqstp, cstate, verify);
982 return status == nfserr_same ? nfs_ok : status;
989 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
994 static inline void nfsd4_increment_op_stats(u32 opnum)
996 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
997 nfsdstats.nfs4_opcount[opnum]++;
1000 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1002 typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
1004 enum nfsd4_op_flags {
1005 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
1006 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1007 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
1008 /* For rfc 5661 section 2.6.3.1.1: */
1009 OP_HANDLES_WRONGSEC = 1 << 3,
1010 OP_IS_PUTFH_LIKE = 1 << 4,
1012 * These are the ops whose result size we estimate before
1013 * encoding, to avoid performing an op then not being able to
1014 * respond or cache a response. This includes writes and setattrs
1015 * as well as the operations usually called "nonidempotent":
1017 OP_MODIFIES_SOMETHING = 1 << 5,
1019 * Cache compounds containing these ops in the xid-based drc:
1020 * We use the DRC for compounds containing non-idempotent
1021 * operations, *except* those that are 4.1-specific (since
1022 * sessions provide their own EOS), and except for stateful
1023 * operations other than setclientid and setclientid_confirm
1024 * (since sequence numbers provide EOS for open, lock, etc in
1027 OP_CACHEME = 1 << 6,
1030 struct nfsd4_operation {
1031 nfsd4op_func op_func;
1034 /* Try to get response size before operation */
1035 nfsd4op_rsize op_rsize_bop;
1038 static struct nfsd4_operation nfsd4_ops[];
1040 static const char *nfsd4_op_name(unsigned opnum);
1043 * Enforce NFSv4.1 COMPOUND ordering rules:
1045 * Also note, enforced elsewhere:
1046 * - SEQUENCE other than as first op results in
1047 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1048 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1049 * (Enforced in nfsd4_bind_conn_to_session().)
1050 * - DESTROY_SESSION must be the final operation in a compound, if
1051 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1052 * (Enforced in nfsd4_destroy_session().)
1054 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
1056 struct nfsd4_op *op = &args->ops[0];
1058 /* These ordering requirements don't apply to NFSv4.0: */
1059 if (args->minorversion == 0)
1061 /* This is weird, but OK, not our problem: */
1062 if (args->opcnt == 0)
1064 if (op->status == nfserr_op_illegal)
1066 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1067 return nfserr_op_not_in_session;
1068 if (op->opnum == OP_SEQUENCE)
1070 if (args->opcnt != 1)
1071 return nfserr_not_only_op;
1075 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1077 return &nfsd4_ops[op->opnum];
1080 bool nfsd4_cache_this_op(struct nfsd4_op *op)
1082 return OPDESC(op)->op_flags & OP_CACHEME;
1085 static bool need_wrongsec_check(struct svc_rqst *rqstp)
1087 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1088 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1089 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1090 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1091 struct nfsd4_operation *thisd;
1092 struct nfsd4_operation *nextd;
1094 thisd = OPDESC(this);
1096 * Most ops check wronsec on our own; only the putfh-like ops
1097 * have special rules.
1099 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1102 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1103 * put-filehandle operation if we're not going to use the
1106 if (argp->opcnt == resp->opcnt)
1109 nextd = OPDESC(next);
1111 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1112 * errors themselves as necessary; others should check for them
1115 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1122 nfsd4_proc_compound(struct svc_rqst *rqstp,
1123 struct nfsd4_compoundargs *args,
1124 struct nfsd4_compoundres *resp)
1126 struct nfsd4_op *op;
1127 struct nfsd4_operation *opdesc;
1128 struct nfsd4_compound_state *cstate = &resp->cstate;
1133 resp->xbuf = &rqstp->rq_res;
1134 resp->p = rqstp->rq_res.head[0].iov_base +
1135 rqstp->rq_res.head[0].iov_len;
1136 resp->tagp = resp->p;
1137 /* reserve space for: taglen, tag, and opcnt */
1138 resp->p += 2 + XDR_QUADLEN(args->taglen);
1139 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1140 resp->taglen = args->taglen;
1141 resp->tag = args->tag;
1143 resp->rqstp = rqstp;
1144 resp->cstate.minorversion = args->minorversion;
1145 resp->cstate.replay_owner = NULL;
1146 resp->cstate.session = NULL;
1147 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1148 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
1150 * Don't use the deferral mechanism for NFSv4; compounds make it
1151 * too hard to avoid non-idempotency problems.
1153 rqstp->rq_usedeferral = 0;
1156 * According to RFC3010, this takes precedence over all other errors.
1158 status = nfserr_minor_vers_mismatch;
1159 if (args->minorversion > nfsd_supported_minorversion)
1162 status = nfs41_check_op_ordering(args);
1165 op->status = status;
1169 while (!status && resp->opcnt < args->opcnt) {
1170 op = &args->ops[resp->opcnt++];
1172 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1173 resp->opcnt, args->opcnt, op->opnum,
1174 nfsd4_op_name(op->opnum));
1176 * The XDR decode routines may have pre-set op->status;
1177 * for example, if there is a miscellaneous XDR error
1178 * it will be set to nfserr_bad_xdr.
1183 /* We must be able to encode a successful response to
1184 * this operation, with enough room left over to encode a
1185 * failed response to the next operation. If we don't
1186 * have enough room, fail with ERR_RESOURCE.
1188 slack_bytes = (char *)resp->end - (char *)resp->p;
1189 if (slack_bytes < COMPOUND_SLACK_SPACE
1190 + COMPOUND_ERR_SLACK_SPACE) {
1191 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
1192 op->status = nfserr_resource;
1196 opdesc = OPDESC(op);
1198 if (!cstate->current_fh.fh_dentry) {
1199 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1200 op->status = nfserr_nofilehandle;
1203 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1204 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1205 op->status = nfserr_moved;
1209 /* If op is non-idempotent */
1210 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1211 plen = opdesc->op_rsize_bop(rqstp, op);
1212 op->status = nfsd4_check_resp_size(resp, plen);
1218 if (opdesc->op_func)
1219 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1221 BUG_ON(op->status == nfs_ok);
1223 if (!op->status && need_wrongsec_check(rqstp))
1224 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1227 /* Only from SEQUENCE */
1228 if (resp->cstate.status == nfserr_replay_cache) {
1229 dprintk("%s NFS4.1 replay from cache\n", __func__);
1230 status = op->status;
1233 if (op->status == nfserr_replay_me) {
1234 op->replay = &cstate->replay_owner->so_replay;
1235 nfsd4_encode_replay(resp, op);
1236 status = op->status = op->replay->rp_status;
1238 nfsd4_encode_operation(resp, op);
1239 status = op->status;
1242 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1243 args->ops, args->opcnt, resp->opcnt, op->opnum,
1244 be32_to_cpu(status));
1246 if (cstate->replay_owner) {
1247 nfs4_unlock_state();
1248 cstate->replay_owner = NULL;
1250 /* XXX Ugh, we need to get rid of this kind of special case: */
1251 if (op->opnum == OP_READ && op->u.read.rd_filp)
1252 fput(op->u.read.rd_filp);
1254 nfsd4_increment_op_stats(op->opnum);
1257 resp->cstate.status = status;
1258 fh_put(&resp->cstate.current_fh);
1259 fh_put(&resp->cstate.save_fh);
1260 BUG_ON(resp->cstate.replay_owner);
1262 /* Reset deferral mechanism for RPC deferrals */
1263 rqstp->rq_usedeferral = 1;
1264 dprintk("nfsv4 compound returned %d\n", ntohl(status));
1268 #define op_encode_hdr_size (2)
1269 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1270 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1271 #define op_encode_change_info_maxsz (5)
1272 #define nfs4_fattr_bitmap_maxsz (4)
1274 #define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1275 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1277 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1279 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1280 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1281 op_encode_ace_maxsz)
1283 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1285 static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1287 return (op_encode_hdr_size) * sizeof(__be32);
1290 static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1292 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1295 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1297 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1300 static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1302 return (op_encode_hdr_size + op_encode_change_info_maxsz
1303 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1306 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1308 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1312 static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1314 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1318 static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1320 return (op_encode_hdr_size + op_encode_stateid_maxsz
1321 + op_encode_change_info_maxsz + 1
1322 + nfs4_fattr_bitmap_maxsz
1323 + op_encode_delegation_maxsz) * sizeof(__be32);
1326 static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1328 u32 maxcount = 0, rlen = 0;
1330 maxcount = svc_max_payload(rqstp);
1331 rlen = op->u.read.rd_length;
1333 if (rlen > maxcount)
1336 return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
1339 static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1341 u32 rlen = op->u.readdir.rd_maxcount;
1343 if (rlen > PAGE_SIZE)
1346 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1347 * sizeof(__be32) + rlen;
1350 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1352 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1356 static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1358 return (op_encode_hdr_size + op_encode_change_info_maxsz
1359 + op_encode_change_info_maxsz) * sizeof(__be32);
1362 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1364 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1367 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1369 return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32);
1372 static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1374 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1377 static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1379 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1380 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1381 2 + /*eir_server_owner.so_minor_id */\
1382 /* eir_server_owner.so_major_id<> */\
1383 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1384 /* eir_server_scope<> */\
1385 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1386 1 + /* eir_server_impl_id array length */\
1387 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1390 static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1392 return (op_encode_hdr_size + \
1393 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1394 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1397 static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1399 return (op_encode_hdr_size + \
1400 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1401 2 + /* csr_sequence, csr_flags */\
1402 op_encode_channel_attrs_maxsz + \
1403 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1406 static struct nfsd4_operation nfsd4_ops[] = {
1408 .op_func = (nfsd4op_func)nfsd4_access,
1409 .op_name = "OP_ACCESS",
1412 .op_func = (nfsd4op_func)nfsd4_close,
1413 .op_flags = OP_MODIFIES_SOMETHING,
1414 .op_name = "OP_CLOSE",
1415 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1418 .op_func = (nfsd4op_func)nfsd4_commit,
1419 .op_flags = OP_MODIFIES_SOMETHING,
1420 .op_name = "OP_COMMIT",
1421 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
1424 .op_func = (nfsd4op_func)nfsd4_create,
1425 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1426 .op_name = "OP_CREATE",
1427 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
1429 [OP_DELEGRETURN] = {
1430 .op_func = (nfsd4op_func)nfsd4_delegreturn,
1431 .op_flags = OP_MODIFIES_SOMETHING,
1432 .op_name = "OP_DELEGRETURN",
1433 .op_rsize_bop = nfsd4_only_status_rsize,
1436 .op_func = (nfsd4op_func)nfsd4_getattr,
1437 .op_flags = ALLOWED_ON_ABSENT_FS,
1438 .op_name = "OP_GETATTR",
1441 .op_func = (nfsd4op_func)nfsd4_getfh,
1442 .op_name = "OP_GETFH",
1445 .op_func = (nfsd4op_func)nfsd4_link,
1446 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1448 .op_name = "OP_LINK",
1449 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
1452 .op_func = (nfsd4op_func)nfsd4_lock,
1453 .op_flags = OP_MODIFIES_SOMETHING,
1454 .op_name = "OP_LOCK",
1455 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
1458 .op_func = (nfsd4op_func)nfsd4_lockt,
1459 .op_name = "OP_LOCKT",
1462 .op_func = (nfsd4op_func)nfsd4_locku,
1463 .op_flags = OP_MODIFIES_SOMETHING,
1464 .op_name = "OP_LOCKU",
1465 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1468 .op_func = (nfsd4op_func)nfsd4_lookup,
1469 .op_flags = OP_HANDLES_WRONGSEC,
1470 .op_name = "OP_LOOKUP",
1473 .op_func = (nfsd4op_func)nfsd4_lookupp,
1474 .op_flags = OP_HANDLES_WRONGSEC,
1475 .op_name = "OP_LOOKUPP",
1478 .op_func = (nfsd4op_func)nfsd4_nverify,
1479 .op_name = "OP_NVERIFY",
1482 .op_func = (nfsd4op_func)nfsd4_open,
1483 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1484 .op_name = "OP_OPEN",
1485 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
1487 [OP_OPEN_CONFIRM] = {
1488 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1489 .op_flags = OP_MODIFIES_SOMETHING,
1490 .op_name = "OP_OPEN_CONFIRM",
1491 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1493 [OP_OPEN_DOWNGRADE] = {
1494 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1495 .op_flags = OP_MODIFIES_SOMETHING,
1496 .op_name = "OP_OPEN_DOWNGRADE",
1497 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1500 .op_func = (nfsd4op_func)nfsd4_putfh,
1501 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1502 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1503 .op_name = "OP_PUTFH",
1504 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1507 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1508 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1509 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1510 .op_name = "OP_PUTPUBFH",
1511 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1514 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1515 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1516 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1517 .op_name = "OP_PUTROOTFH",
1518 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1521 .op_func = (nfsd4op_func)nfsd4_read,
1522 .op_flags = OP_MODIFIES_SOMETHING,
1523 .op_name = "OP_READ",
1524 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
1527 .op_func = (nfsd4op_func)nfsd4_readdir,
1528 .op_flags = OP_MODIFIES_SOMETHING,
1529 .op_name = "OP_READDIR",
1530 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
1533 .op_func = (nfsd4op_func)nfsd4_readlink,
1534 .op_name = "OP_READLINK",
1537 .op_func = (nfsd4op_func)nfsd4_remove,
1538 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1539 .op_name = "OP_REMOVE",
1540 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
1543 .op_func = (nfsd4op_func)nfsd4_rename,
1544 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1545 .op_name = "OP_RENAME",
1546 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
1549 .op_func = (nfsd4op_func)nfsd4_renew,
1550 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1551 | OP_MODIFIES_SOMETHING,
1552 .op_name = "OP_RENEW",
1553 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1557 .op_func = (nfsd4op_func)nfsd4_restorefh,
1558 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1559 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1560 .op_name = "OP_RESTOREFH",
1561 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1564 .op_func = (nfsd4op_func)nfsd4_savefh,
1565 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1566 .op_name = "OP_SAVEFH",
1567 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1570 .op_func = (nfsd4op_func)nfsd4_secinfo,
1571 .op_flags = OP_HANDLES_WRONGSEC,
1572 .op_name = "OP_SECINFO",
1575 .op_func = (nfsd4op_func)nfsd4_setattr,
1576 .op_name = "OP_SETATTR",
1577 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1578 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
1580 [OP_SETCLIENTID] = {
1581 .op_func = (nfsd4op_func)nfsd4_setclientid,
1582 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1583 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1584 .op_name = "OP_SETCLIENTID",
1585 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
1587 [OP_SETCLIENTID_CONFIRM] = {
1588 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1589 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1590 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1591 .op_name = "OP_SETCLIENTID_CONFIRM",
1592 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1595 .op_func = (nfsd4op_func)nfsd4_verify,
1596 .op_name = "OP_VERIFY",
1599 .op_func = (nfsd4op_func)nfsd4_write,
1600 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1601 .op_name = "OP_WRITE",
1602 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1604 [OP_RELEASE_LOCKOWNER] = {
1605 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1606 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1607 | OP_MODIFIES_SOMETHING,
1608 .op_name = "OP_RELEASE_LOCKOWNER",
1609 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1612 /* NFSv4.1 operations */
1613 [OP_EXCHANGE_ID] = {
1614 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1615 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1616 | OP_MODIFIES_SOMETHING,
1617 .op_name = "OP_EXCHANGE_ID",
1618 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
1620 [OP_BIND_CONN_TO_SESSION] = {
1621 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1622 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1623 | OP_MODIFIES_SOMETHING,
1624 .op_name = "OP_BIND_CONN_TO_SESSION",
1625 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
1627 [OP_CREATE_SESSION] = {
1628 .op_func = (nfsd4op_func)nfsd4_create_session,
1629 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1630 | OP_MODIFIES_SOMETHING,
1631 .op_name = "OP_CREATE_SESSION",
1632 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
1634 [OP_DESTROY_SESSION] = {
1635 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1636 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1637 | OP_MODIFIES_SOMETHING,
1638 .op_name = "OP_DESTROY_SESSION",
1639 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1642 .op_func = (nfsd4op_func)nfsd4_sequence,
1643 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1644 .op_name = "OP_SEQUENCE",
1646 [OP_DESTROY_CLIENTID] = {
1647 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
1648 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1649 | OP_MODIFIES_SOMETHING,
1650 .op_name = "OP_DESTROY_CLIENTID",
1651 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1653 [OP_RECLAIM_COMPLETE] = {
1654 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1655 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1656 .op_name = "OP_RECLAIM_COMPLETE",
1657 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1659 [OP_SECINFO_NO_NAME] = {
1660 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
1661 .op_flags = OP_HANDLES_WRONGSEC,
1662 .op_name = "OP_SECINFO_NO_NAME",
1664 [OP_TEST_STATEID] = {
1665 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1666 .op_flags = ALLOWED_WITHOUT_FH,
1667 .op_name = "OP_TEST_STATEID",
1669 [OP_FREE_STATEID] = {
1670 .op_func = (nfsd4op_func)nfsd4_free_stateid,
1671 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1672 .op_name = "OP_FREE_STATEID",
1673 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1677 static const char *nfsd4_op_name(unsigned opnum)
1679 if (opnum < ARRAY_SIZE(nfsd4_ops))
1680 return nfsd4_ops[opnum].op_name;
1681 return "unknown_operation";
1684 #define nfsd4_voidres nfsd4_voidargs
1685 struct nfsd4_voidargs { int dummy; };
1687 static struct svc_procedure nfsd_procedures4[2] = {
1689 .pc_func = (svc_procfunc) nfsd4_proc_null,
1690 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1691 .pc_argsize = sizeof(struct nfsd4_voidargs),
1692 .pc_ressize = sizeof(struct nfsd4_voidres),
1693 .pc_cachetype = RC_NOCACHE,
1696 [NFSPROC4_COMPOUND] = {
1697 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1698 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1699 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1700 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1701 .pc_ressize = sizeof(struct nfsd4_compoundres),
1702 .pc_release = nfsd4_release_compoundargs,
1703 .pc_cachetype = RC_NOCACHE,
1704 .pc_xdrressize = NFSD_BUFSIZE/4,
1708 struct svc_version nfsd_version4 = {
1711 .vs_proc = nfsd_procedures4,
1712 .vs_dispatch = nfsd_dispatch,
1713 .vs_xdrsize = NFS4_SVC_XDRSIZE,