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>
42 #include "current_stateid.h"
44 #define NFSDDBG_FACILITY NFSDDBG_PROC
46 static u32 nfsd_attrmask[] = {
47 NFSD_WRITEABLE_ATTRS_WORD0,
48 NFSD_WRITEABLE_ATTRS_WORD1,
49 NFSD_WRITEABLE_ATTRS_WORD2
52 static u32 nfsd41_ex_attrmask[] = {
53 NFSD_SUPPATTR_EXCLCREAT_WORD0,
54 NFSD_SUPPATTR_EXCLCREAT_WORD1,
55 NFSD_SUPPATTR_EXCLCREAT_WORD2
59 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
60 u32 *bmval, u32 *writable)
62 struct dentry *dentry = cstate->current_fh.fh_dentry;
65 * Check about attributes are supported by the NFSv4 server or not.
66 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
68 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
69 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
70 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
71 return nfserr_attrnotsupp;
74 * Check FATTR4_WORD0_ACL can be supported
75 * in current environment or not.
77 if (bmval[0] & FATTR4_WORD0_ACL) {
78 if (!IS_POSIXACL(dentry->d_inode))
79 return nfserr_attrnotsupp;
83 * According to spec, read-only attributes return ERR_INVAL.
86 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
87 (bmval[2] & ~writable[2]))
95 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
96 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
98 __be32 status = nfs_ok;
100 if (open->op_create == NFS4_OPEN_CREATE) {
101 if (open->op_createmode == NFS4_CREATE_UNCHECKED
102 || open->op_createmode == NFS4_CREATE_GUARDED)
103 status = check_attr_support(rqstp, cstate,
104 open->op_bmval, nfsd_attrmask);
105 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
106 status = check_attr_support(rqstp, cstate,
107 open->op_bmval, nfsd41_ex_attrmask);
114 is_create_with_attrs(struct nfsd4_open *open)
116 return open->op_create == NFS4_OPEN_CREATE
117 && (open->op_createmode == NFS4_CREATE_UNCHECKED
118 || open->op_createmode == NFS4_CREATE_GUARDED
119 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
123 * if error occurs when setting the acl, just clear the acl bit
124 * in the returned attr bitmap.
127 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
128 struct nfs4_acl *acl, u32 *bmval)
132 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
135 * We should probably fail the whole open at this point,
136 * but we've already created the file, so it's too late;
137 * So this seems the least of evils:
139 bmval[0] &= ~FATTR4_WORD0_ACL;
143 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
146 dget(src->fh_dentry);
148 cache_get(&src->fh_export->h);
153 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
157 if (open->op_truncate &&
158 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
161 accmode |= NFSD_MAY_READ_IF_EXEC;
163 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
164 accmode |= NFSD_MAY_READ;
165 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
166 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
167 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
168 accmode |= NFSD_MAY_WRITE;
170 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
175 static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
177 umode_t mode = fh->fh_dentry->d_inode->i_mode;
184 * Using err_symlink as our catch-all case may look odd; but
185 * there's no other obvious error for this case in 4.0, and we
186 * happen to know that it will cause the linux v4 client to do
187 * the right thing on attempts to open something other than a
190 return nfserr_symlink;
194 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
196 struct svc_fh *resfh;
199 resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
201 return nfserr_jukebox;
202 fh_init(resfh, NFS4_FHSIZE);
203 open->op_truncate = 0;
205 if (open->op_create) {
206 /* FIXME: check session persistence and pnfs flags.
207 * The nfsv4.1 spec requires the following semantics:
209 * Persistent | pNFS | Server REQUIRED | Client Allowed
210 * Reply Cache | server | |
211 * -------------+--------+-----------------+--------------------
212 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
214 * | | and EXCLUSIVE4 | or EXCLUSIVE4
216 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
217 * yes | no | GUARDED4 | GUARDED4
218 * yes | yes | GUARDED4 | GUARDED4
222 * Note: create modes (UNCHECKED,GUARDED...) are the same
223 * in NFSv4 as in v3 except EXCLUSIVE4_1.
225 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
226 open->op_fname.len, &open->op_iattr,
227 resfh, open->op_createmode,
228 (u32 *)open->op_verf.data,
229 &open->op_truncate, &open->op_created);
232 * Following rfc 3530 14.2.16, use the returned bitmask
233 * to indicate which attributes we used to store the
236 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
237 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
238 FATTR4_WORD1_TIME_MODIFY);
240 status = nfsd_lookup(rqstp, current_fh,
241 open->op_fname.data, open->op_fname.len, resfh);
242 fh_unlock(current_fh);
245 status = nfsd_check_obj_isreg(resfh);
250 if (is_create_with_attrs(open) && open->op_acl != NULL)
251 do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval);
253 /* set reply cache */
254 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
256 if (!open->op_created)
257 status = do_open_permission(rqstp, resfh, open,
259 set_change_info(&open->op_cinfo, current_fh);
260 fh_dup2(current_fh, resfh);
268 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
272 /* We don't know the target directory, and therefore can not
273 * set the change info
276 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
278 /* set replay cache */
279 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
280 ¤t_fh->fh_handle);
282 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
283 (open->op_iattr.ia_size == 0);
285 status = do_open_permission(rqstp, current_fh, open,
286 NFSD_MAY_OWNER_OVERRIDE);
292 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
294 struct nfsd4_sessionid *sid =
295 (struct nfsd4_sessionid *)session->se_sessionid.data;
297 clid->cl_boot = sid->clientid.cl_boot;
298 clid->cl_id = sid->clientid.cl_id;
302 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
303 struct nfsd4_open *open)
306 struct nfsd4_compoundres *resp;
308 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
309 (int)open->op_fname.len, open->op_fname.data,
312 /* This check required by spec. */
313 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
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);
455 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
456 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
457 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
463 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
466 if (!cstate->current_fh.fh_dentry)
467 return nfserr_nofilehandle;
469 fh_dup2(&cstate->save_fh, &cstate->current_fh);
470 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
471 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
472 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
481 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
482 struct nfsd4_access *access)
484 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
487 access->ac_resp_access = access->ac_req_access;
488 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
489 &access->ac_supported);
493 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
494 struct nfsd4_commit *commit)
496 u32 *p = (u32 *)commit->co_verf.data;
497 *p++ = nfssvc_boot.tv_sec;
498 *p++ = nfssvc_boot.tv_usec;
500 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
505 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
506 struct nfsd4_create *create)
512 fh_init(&resfh, NFS4_FHSIZE);
514 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
519 status = check_attr_support(rqstp, cstate, create->cr_bmval,
524 switch (create->cr_type) {
526 /* ugh! we have to null-terminate the linktext, or
527 * vfs_symlink() will choke. it is always safe to
528 * null-terminate by brute force, since at worst we
529 * will overwrite the first byte of the create namelen
530 * in the XDR buffer, which has already been extracted
533 create->cr_linkname[create->cr_linklen] = 0;
535 status = nfsd_symlink(rqstp, &cstate->current_fh,
536 create->cr_name, create->cr_namelen,
537 create->cr_linkname, create->cr_linklen,
538 &resfh, &create->cr_iattr);
542 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
543 if (MAJOR(rdev) != create->cr_specdata1 ||
544 MINOR(rdev) != create->cr_specdata2)
546 status = nfsd_create(rqstp, &cstate->current_fh,
547 create->cr_name, create->cr_namelen,
548 &create->cr_iattr, S_IFBLK, rdev, &resfh);
552 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
553 if (MAJOR(rdev) != create->cr_specdata1 ||
554 MINOR(rdev) != create->cr_specdata2)
556 status = nfsd_create(rqstp, &cstate->current_fh,
557 create->cr_name, create->cr_namelen,
558 &create->cr_iattr,S_IFCHR, rdev, &resfh);
562 status = nfsd_create(rqstp, &cstate->current_fh,
563 create->cr_name, create->cr_namelen,
564 &create->cr_iattr, S_IFSOCK, 0, &resfh);
568 status = nfsd_create(rqstp, &cstate->current_fh,
569 create->cr_name, create->cr_namelen,
570 &create->cr_iattr, S_IFIFO, 0, &resfh);
574 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
575 status = nfsd_create(rqstp, &cstate->current_fh,
576 create->cr_name, create->cr_namelen,
577 &create->cr_iattr, S_IFDIR, 0, &resfh);
581 status = nfserr_badtype;
587 if (create->cr_acl != NULL)
588 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
591 fh_unlock(&cstate->current_fh);
592 set_change_info(&create->cr_cinfo, &cstate->current_fh);
593 fh_dup2(&cstate->current_fh, &resfh);
600 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
601 struct nfsd4_getattr *getattr)
605 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
609 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
612 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
613 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
614 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
616 getattr->ga_fhp = &cstate->current_fh;
621 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
622 struct nfsd4_link *link)
624 __be32 status = nfserr_nofilehandle;
626 if (!cstate->save_fh.fh_dentry)
628 status = nfsd_link(rqstp, &cstate->current_fh,
629 link->li_name, link->li_namelen, &cstate->save_fh);
631 set_change_info(&link->li_cinfo, &cstate->current_fh);
635 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
637 struct svc_fh tmp_fh;
640 fh_init(&tmp_fh, NFS4_FHSIZE);
641 ret = exp_pseudoroot(rqstp, &tmp_fh);
644 if (tmp_fh.fh_dentry == fh->fh_dentry) {
649 return nfsd_lookup(rqstp, fh, "..", 2, fh);
653 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
656 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
660 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
661 struct nfsd4_lookup *lookup)
663 return nfsd_lookup(rqstp, &cstate->current_fh,
664 lookup->lo_name, lookup->lo_len,
665 &cstate->current_fh);
669 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
670 struct nfsd4_read *read)
674 /* no need to check permission - this will be done in nfsd_read() */
676 read->rd_filp = NULL;
677 if (read->rd_offset >= OFFSET_MAX)
682 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
683 RD_STATE, &read->rd_filp))) {
684 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
688 get_file(read->rd_filp);
692 read->rd_rqstp = rqstp;
693 read->rd_fhp = &cstate->current_fh;
698 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
699 struct nfsd4_readdir *readdir)
701 u64 cookie = readdir->rd_cookie;
702 static const nfs4_verifier zeroverf;
704 /* no need to check permission - this will be done in nfsd_readdir() */
706 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
709 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
710 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
711 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
713 if ((cookie == 1) || (cookie == 2) ||
714 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
715 return nfserr_bad_cookie;
717 readdir->rd_rqstp = rqstp;
718 readdir->rd_fhp = &cstate->current_fh;
723 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
724 struct nfsd4_readlink *readlink)
726 readlink->rl_rqstp = rqstp;
727 readlink->rl_fhp = &cstate->current_fh;
732 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
733 struct nfsd4_remove *remove)
737 if (locks_in_grace())
739 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
740 remove->rm_name, remove->rm_namelen);
742 fh_unlock(&cstate->current_fh);
743 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
749 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
750 struct nfsd4_rename *rename)
752 __be32 status = nfserr_nofilehandle;
754 if (!cstate->save_fh.fh_dentry)
756 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
757 & NFSEXP_NOSUBTREECHECK))
759 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
760 rename->rn_snamelen, &cstate->current_fh,
761 rename->rn_tname, rename->rn_tnamelen);
763 /* the underlying filesystem returns different error's than required
764 * by NFSv4. both save_fh and current_fh have been verified.. */
765 if (status == nfserr_isdir)
766 status = nfserr_exist;
767 else if ((status == nfserr_notdir) &&
768 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
769 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
770 status = nfserr_exist;
773 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
774 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
780 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
781 struct nfsd4_secinfo *secinfo)
784 struct svc_export *exp;
785 struct dentry *dentry;
788 fh_init(&resfh, NFS4_FHSIZE);
789 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
792 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
793 secinfo->si_name, secinfo->si_namelen,
797 if (dentry->d_inode == NULL) {
801 secinfo->si_exp = exp;
803 if (cstate->minorversion)
804 /* See rfc 5661 section 2.6.3.1.1.8 */
805 fh_put(&cstate->current_fh);
810 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
811 struct nfsd4_secinfo_no_name *sin)
815 switch (sin->sin_style) {
816 case NFS4_SECINFO_STYLE4_CURRENT_FH:
818 case NFS4_SECINFO_STYLE4_PARENT:
819 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
826 exp_get(cstate->current_fh.fh_export);
827 sin->sin_exp = cstate->current_fh.fh_export;
828 fh_put(&cstate->current_fh);
833 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
834 struct nfsd4_setattr *setattr)
836 __be32 status = nfs_ok;
838 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
840 status = nfs4_preprocess_stateid_op(cstate,
841 &setattr->sa_stateid, WR_STATE, NULL);
844 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
848 status = fh_want_write(&cstate->current_fh);
853 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
858 if (setattr->sa_acl != NULL)
859 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
863 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
866 fh_drop_write(&cstate->current_fh);
871 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
872 struct nfsd4_write *write)
874 stateid_t *stateid = &write->wr_stateid;
875 struct file *filp = NULL;
877 __be32 status = nfs_ok;
880 /* no need to check permission - this will be done in nfsd_write() */
882 if (write->wr_offset >= OFFSET_MAX)
886 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
892 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
896 cnt = write->wr_buflen;
897 write->wr_how_written = write->wr_stable_how;
898 p = (u32 *)write->wr_verifier.data;
899 *p++ = nfssvc_boot.tv_sec;
900 *p++ = nfssvc_boot.tv_usec;
902 status = nfsd_write(rqstp, &cstate->current_fh, filp,
903 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
904 &cnt, &write->wr_how_written);
908 write->wr_bytes_written = cnt;
913 /* This routine never returns NFS_OK! If there are no other errors, it
914 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
915 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
916 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
919 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
920 struct nfsd4_verify *verify)
926 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
930 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
934 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
935 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
937 if (verify->ve_attrlen & 3)
941 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
943 count = 4 + (verify->ve_attrlen >> 2);
944 buf = kmalloc(count << 2, GFP_KERNEL);
946 return nfserr_jukebox;
948 status = nfsd4_encode_fattr(&cstate->current_fh,
949 cstate->current_fh.fh_export,
950 cstate->current_fh.fh_dentry, buf,
951 &count, verify->ve_bmval,
954 /* this means that nfsd4_encode_fattr() ran out of space */
955 if (status == nfserr_resource && count == 0)
956 status = nfserr_not_same;
961 p = buf + 1 + ntohl(buf[0]);
962 status = nfserr_not_same;
963 if (ntohl(*p++) != verify->ve_attrlen)
965 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
966 status = nfserr_same;
974 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
975 struct nfsd4_verify *verify)
979 status = _nfsd4_verify(rqstp, cstate, verify);
980 return status == nfserr_not_same ? nfs_ok : status;
984 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
985 struct nfsd4_verify *verify)
989 status = _nfsd4_verify(rqstp, cstate, verify);
990 return status == nfserr_same ? nfs_ok : status;
997 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1002 static inline void nfsd4_increment_op_stats(u32 opnum)
1004 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1005 nfsdstats.nfs4_opcount[opnum]++;
1008 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1010 typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
1011 typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1012 typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
1014 enum nfsd4_op_flags {
1015 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
1016 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1017 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
1018 /* For rfc 5661 section 2.6.3.1.1: */
1019 OP_HANDLES_WRONGSEC = 1 << 3,
1020 OP_IS_PUTFH_LIKE = 1 << 4,
1022 * These are the ops whose result size we estimate before
1023 * encoding, to avoid performing an op then not being able to
1024 * respond or cache a response. This includes writes and setattrs
1025 * as well as the operations usually called "nonidempotent":
1027 OP_MODIFIES_SOMETHING = 1 << 5,
1029 * Cache compounds containing these ops in the xid-based drc:
1030 * We use the DRC for compounds containing non-idempotent
1031 * operations, *except* those that are 4.1-specific (since
1032 * sessions provide their own EOS), and except for stateful
1033 * operations other than setclientid and setclientid_confirm
1034 * (since sequence numbers provide EOS for open, lock, etc in
1037 OP_CACHEME = 1 << 6,
1039 * These are ops which clear current state id.
1041 OP_CLEAR_STATEID = 1 << 7,
1044 struct nfsd4_operation {
1045 nfsd4op_func op_func;
1048 /* Try to get response size before operation */
1049 nfsd4op_rsize op_rsize_bop;
1050 stateid_setter op_get_currentstateid;
1051 stateid_getter op_set_currentstateid;
1054 static struct nfsd4_operation nfsd4_ops[];
1057 static const char *nfsd4_op_name(unsigned opnum);
1061 * Enforce NFSv4.1 COMPOUND ordering rules:
1063 * Also note, enforced elsewhere:
1064 * - SEQUENCE other than as first op results in
1065 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1066 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1067 * (Enforced in nfsd4_bind_conn_to_session().)
1068 * - DESTROY_SESSION must be the final operation in a compound, if
1069 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1070 * (Enforced in nfsd4_destroy_session().)
1072 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
1074 struct nfsd4_op *op = &args->ops[0];
1076 /* These ordering requirements don't apply to NFSv4.0: */
1077 if (args->minorversion == 0)
1079 /* This is weird, but OK, not our problem: */
1080 if (args->opcnt == 0)
1082 if (op->status == nfserr_op_illegal)
1084 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1085 return nfserr_op_not_in_session;
1086 if (op->opnum == OP_SEQUENCE)
1088 if (args->opcnt != 1)
1089 return nfserr_not_only_op;
1093 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1095 return &nfsd4_ops[op->opnum];
1098 bool nfsd4_cache_this_op(struct nfsd4_op *op)
1100 return OPDESC(op)->op_flags & OP_CACHEME;
1103 static bool need_wrongsec_check(struct svc_rqst *rqstp)
1105 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1106 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1107 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1108 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1109 struct nfsd4_operation *thisd;
1110 struct nfsd4_operation *nextd;
1112 thisd = OPDESC(this);
1114 * Most ops check wronsec on our own; only the putfh-like ops
1115 * have special rules.
1117 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1120 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1121 * put-filehandle operation if we're not going to use the
1124 if (argp->opcnt == resp->opcnt)
1127 nextd = OPDESC(next);
1129 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1130 * errors themselves as necessary; others should check for them
1133 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1140 nfsd4_proc_compound(struct svc_rqst *rqstp,
1141 struct nfsd4_compoundargs *args,
1142 struct nfsd4_compoundres *resp)
1144 struct nfsd4_op *op;
1145 struct nfsd4_operation *opdesc;
1146 struct nfsd4_compound_state *cstate = &resp->cstate;
1151 resp->xbuf = &rqstp->rq_res;
1152 resp->p = rqstp->rq_res.head[0].iov_base +
1153 rqstp->rq_res.head[0].iov_len;
1154 resp->tagp = resp->p;
1155 /* reserve space for: taglen, tag, and opcnt */
1156 resp->p += 2 + XDR_QUADLEN(args->taglen);
1157 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1158 resp->taglen = args->taglen;
1159 resp->tag = args->tag;
1161 resp->rqstp = rqstp;
1162 resp->cstate.minorversion = args->minorversion;
1163 resp->cstate.replay_owner = NULL;
1164 resp->cstate.session = NULL;
1165 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1166 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
1168 * Don't use the deferral mechanism for NFSv4; compounds make it
1169 * too hard to avoid non-idempotency problems.
1171 rqstp->rq_usedeferral = 0;
1174 * According to RFC3010, this takes precedence over all other errors.
1176 status = nfserr_minor_vers_mismatch;
1177 if (args->minorversion > nfsd_supported_minorversion)
1180 status = nfs41_check_op_ordering(args);
1183 op->status = status;
1187 while (!status && resp->opcnt < args->opcnt) {
1188 op = &args->ops[resp->opcnt++];
1190 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1191 resp->opcnt, args->opcnt, op->opnum,
1192 nfsd4_op_name(op->opnum));
1194 * The XDR decode routines may have pre-set op->status;
1195 * for example, if there is a miscellaneous XDR error
1196 * it will be set to nfserr_bad_xdr.
1201 /* We must be able to encode a successful response to
1202 * this operation, with enough room left over to encode a
1203 * failed response to the next operation. If we don't
1204 * have enough room, fail with ERR_RESOURCE.
1206 slack_bytes = (char *)resp->end - (char *)resp->p;
1207 if (slack_bytes < COMPOUND_SLACK_SPACE
1208 + COMPOUND_ERR_SLACK_SPACE) {
1209 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
1210 op->status = nfserr_resource;
1214 opdesc = OPDESC(op);
1216 if (!cstate->current_fh.fh_dentry) {
1217 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1218 op->status = nfserr_nofilehandle;
1221 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1222 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1223 op->status = nfserr_moved;
1227 /* If op is non-idempotent */
1228 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1229 plen = opdesc->op_rsize_bop(rqstp, op);
1230 op->status = nfsd4_check_resp_size(resp, plen);
1236 if (opdesc->op_func) {
1237 if (opdesc->op_get_currentstateid)
1238 opdesc->op_get_currentstateid(cstate, &op->u);
1239 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1241 BUG_ON(op->status == nfs_ok);
1244 if (opdesc->op_set_currentstateid)
1245 opdesc->op_set_currentstateid(cstate, &op->u);
1247 if (opdesc->op_flags & OP_CLEAR_STATEID)
1248 clear_current_stateid(cstate);
1250 if (need_wrongsec_check(rqstp))
1251 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1255 /* Only from SEQUENCE */
1256 if (resp->cstate.status == nfserr_replay_cache) {
1257 dprintk("%s NFS4.1 replay from cache\n", __func__);
1258 status = op->status;
1261 if (op->status == nfserr_replay_me) {
1262 op->replay = &cstate->replay_owner->so_replay;
1263 nfsd4_encode_replay(resp, op);
1264 status = op->status = op->replay->rp_status;
1266 nfsd4_encode_operation(resp, op);
1267 status = op->status;
1270 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1271 args->ops, args->opcnt, resp->opcnt, op->opnum,
1272 be32_to_cpu(status));
1274 if (cstate->replay_owner) {
1275 nfs4_unlock_state();
1276 cstate->replay_owner = NULL;
1278 /* XXX Ugh, we need to get rid of this kind of special case: */
1279 if (op->opnum == OP_READ && op->u.read.rd_filp)
1280 fput(op->u.read.rd_filp);
1282 nfsd4_increment_op_stats(op->opnum);
1285 resp->cstate.status = status;
1286 fh_put(&resp->cstate.current_fh);
1287 fh_put(&resp->cstate.save_fh);
1288 BUG_ON(resp->cstate.replay_owner);
1290 /* Reset deferral mechanism for RPC deferrals */
1291 rqstp->rq_usedeferral = 1;
1292 dprintk("nfsv4 compound returned %d\n", ntohl(status));
1296 #define op_encode_hdr_size (2)
1297 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1298 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1299 #define op_encode_change_info_maxsz (5)
1300 #define nfs4_fattr_bitmap_maxsz (4)
1302 #define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1303 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1305 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1307 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1308 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1309 op_encode_ace_maxsz)
1311 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1313 static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1315 return (op_encode_hdr_size) * sizeof(__be32);
1318 static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1320 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1323 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1325 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1328 static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1330 return (op_encode_hdr_size + op_encode_change_info_maxsz
1331 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1334 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1336 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1340 static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1342 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1346 static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1348 return (op_encode_hdr_size + op_encode_stateid_maxsz
1349 + op_encode_change_info_maxsz + 1
1350 + nfs4_fattr_bitmap_maxsz
1351 + op_encode_delegation_maxsz) * sizeof(__be32);
1354 static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1356 u32 maxcount = 0, rlen = 0;
1358 maxcount = svc_max_payload(rqstp);
1359 rlen = op->u.read.rd_length;
1361 if (rlen > maxcount)
1364 return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
1367 static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1369 u32 rlen = op->u.readdir.rd_maxcount;
1371 if (rlen > PAGE_SIZE)
1374 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1375 * sizeof(__be32) + rlen;
1378 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1380 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1384 static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1386 return (op_encode_hdr_size + op_encode_change_info_maxsz
1387 + op_encode_change_info_maxsz) * sizeof(__be32);
1390 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1392 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1395 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1397 return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32);
1400 static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1402 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1405 static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1407 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1408 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1409 2 + /*eir_server_owner.so_minor_id */\
1410 /* eir_server_owner.so_major_id<> */\
1411 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1412 /* eir_server_scope<> */\
1413 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1414 1 + /* eir_server_impl_id array length */\
1415 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1418 static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1420 return (op_encode_hdr_size + \
1421 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1422 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1425 static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1427 return (op_encode_hdr_size + \
1428 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1429 2 + /* csr_sequence, csr_flags */\
1430 op_encode_channel_attrs_maxsz + \
1431 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1434 static struct nfsd4_operation nfsd4_ops[] = {
1436 .op_func = (nfsd4op_func)nfsd4_access,
1437 .op_name = "OP_ACCESS",
1440 .op_func = (nfsd4op_func)nfsd4_close,
1441 .op_flags = OP_MODIFIES_SOMETHING,
1442 .op_name = "OP_CLOSE",
1443 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1444 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1445 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
1448 .op_func = (nfsd4op_func)nfsd4_commit,
1449 .op_flags = OP_MODIFIES_SOMETHING,
1450 .op_name = "OP_COMMIT",
1451 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
1454 .op_func = (nfsd4op_func)nfsd4_create,
1455 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
1456 .op_name = "OP_CREATE",
1457 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
1459 [OP_DELEGRETURN] = {
1460 .op_func = (nfsd4op_func)nfsd4_delegreturn,
1461 .op_flags = OP_MODIFIES_SOMETHING,
1462 .op_name = "OP_DELEGRETURN",
1463 .op_rsize_bop = nfsd4_only_status_rsize,
1464 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
1467 .op_func = (nfsd4op_func)nfsd4_getattr,
1468 .op_flags = ALLOWED_ON_ABSENT_FS,
1469 .op_name = "OP_GETATTR",
1472 .op_func = (nfsd4op_func)nfsd4_getfh,
1473 .op_name = "OP_GETFH",
1476 .op_func = (nfsd4op_func)nfsd4_link,
1477 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1479 .op_name = "OP_LINK",
1480 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
1483 .op_func = (nfsd4op_func)nfsd4_lock,
1484 .op_flags = OP_MODIFIES_SOMETHING,
1485 .op_name = "OP_LOCK",
1486 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
1487 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
1490 .op_func = (nfsd4op_func)nfsd4_lockt,
1491 .op_name = "OP_LOCKT",
1494 .op_func = (nfsd4op_func)nfsd4_locku,
1495 .op_flags = OP_MODIFIES_SOMETHING,
1496 .op_name = "OP_LOCKU",
1497 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1498 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
1501 .op_func = (nfsd4op_func)nfsd4_lookup,
1502 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
1503 .op_name = "OP_LOOKUP",
1506 .op_func = (nfsd4op_func)nfsd4_lookupp,
1507 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
1508 .op_name = "OP_LOOKUPP",
1511 .op_func = (nfsd4op_func)nfsd4_nverify,
1512 .op_name = "OP_NVERIFY",
1515 .op_func = (nfsd4op_func)nfsd4_open,
1516 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1517 .op_name = "OP_OPEN",
1518 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
1519 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
1521 [OP_OPEN_CONFIRM] = {
1522 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1523 .op_flags = OP_MODIFIES_SOMETHING,
1524 .op_name = "OP_OPEN_CONFIRM",
1525 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1527 [OP_OPEN_DOWNGRADE] = {
1528 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1529 .op_flags = OP_MODIFIES_SOMETHING,
1530 .op_name = "OP_OPEN_DOWNGRADE",
1531 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1532 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
1533 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
1536 .op_func = (nfsd4op_func)nfsd4_putfh,
1537 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1538 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1540 .op_name = "OP_PUTFH",
1541 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1544 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1545 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1546 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1548 .op_name = "OP_PUTPUBFH",
1549 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1552 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1553 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1554 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1556 .op_name = "OP_PUTROOTFH",
1557 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1560 .op_func = (nfsd4op_func)nfsd4_read,
1561 .op_flags = OP_MODIFIES_SOMETHING,
1562 .op_name = "OP_READ",
1563 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
1564 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
1567 .op_func = (nfsd4op_func)nfsd4_readdir,
1568 .op_flags = OP_MODIFIES_SOMETHING,
1569 .op_name = "OP_READDIR",
1570 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
1573 .op_func = (nfsd4op_func)nfsd4_readlink,
1574 .op_name = "OP_READLINK",
1577 .op_func = (nfsd4op_func)nfsd4_remove,
1578 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1579 .op_name = "OP_REMOVE",
1580 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
1583 .op_func = (nfsd4op_func)nfsd4_rename,
1584 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1585 .op_name = "OP_RENAME",
1586 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
1589 .op_func = (nfsd4op_func)nfsd4_renew,
1590 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1591 | OP_MODIFIES_SOMETHING,
1592 .op_name = "OP_RENEW",
1593 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1597 .op_func = (nfsd4op_func)nfsd4_restorefh,
1598 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1599 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1600 .op_name = "OP_RESTOREFH",
1601 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1604 .op_func = (nfsd4op_func)nfsd4_savefh,
1605 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1606 .op_name = "OP_SAVEFH",
1607 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1610 .op_func = (nfsd4op_func)nfsd4_secinfo,
1611 .op_flags = OP_HANDLES_WRONGSEC,
1612 .op_name = "OP_SECINFO",
1615 .op_func = (nfsd4op_func)nfsd4_setattr,
1616 .op_name = "OP_SETATTR",
1617 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1618 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
1619 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
1621 [OP_SETCLIENTID] = {
1622 .op_func = (nfsd4op_func)nfsd4_setclientid,
1623 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1624 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1625 .op_name = "OP_SETCLIENTID",
1626 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
1628 [OP_SETCLIENTID_CONFIRM] = {
1629 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1630 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1631 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1632 .op_name = "OP_SETCLIENTID_CONFIRM",
1633 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1636 .op_func = (nfsd4op_func)nfsd4_verify,
1637 .op_name = "OP_VERIFY",
1640 .op_func = (nfsd4op_func)nfsd4_write,
1641 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1642 .op_name = "OP_WRITE",
1643 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1644 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
1646 [OP_RELEASE_LOCKOWNER] = {
1647 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1648 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1649 | OP_MODIFIES_SOMETHING,
1650 .op_name = "OP_RELEASE_LOCKOWNER",
1651 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1654 /* NFSv4.1 operations */
1655 [OP_EXCHANGE_ID] = {
1656 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1657 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1658 | OP_MODIFIES_SOMETHING,
1659 .op_name = "OP_EXCHANGE_ID",
1660 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
1662 [OP_BIND_CONN_TO_SESSION] = {
1663 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1664 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1665 | OP_MODIFIES_SOMETHING,
1666 .op_name = "OP_BIND_CONN_TO_SESSION",
1667 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
1669 [OP_CREATE_SESSION] = {
1670 .op_func = (nfsd4op_func)nfsd4_create_session,
1671 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1672 | OP_MODIFIES_SOMETHING,
1673 .op_name = "OP_CREATE_SESSION",
1674 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
1676 [OP_DESTROY_SESSION] = {
1677 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1678 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1679 | OP_MODIFIES_SOMETHING,
1680 .op_name = "OP_DESTROY_SESSION",
1681 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1684 .op_func = (nfsd4op_func)nfsd4_sequence,
1685 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1686 .op_name = "OP_SEQUENCE",
1688 [OP_DESTROY_CLIENTID] = {
1689 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
1690 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1691 | OP_MODIFIES_SOMETHING,
1692 .op_name = "OP_DESTROY_CLIENTID",
1693 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1695 [OP_RECLAIM_COMPLETE] = {
1696 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1697 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1698 .op_name = "OP_RECLAIM_COMPLETE",
1699 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1701 [OP_SECINFO_NO_NAME] = {
1702 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
1703 .op_flags = OP_HANDLES_WRONGSEC,
1704 .op_name = "OP_SECINFO_NO_NAME",
1706 [OP_TEST_STATEID] = {
1707 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1708 .op_flags = ALLOWED_WITHOUT_FH,
1709 .op_name = "OP_TEST_STATEID",
1711 [OP_FREE_STATEID] = {
1712 .op_func = (nfsd4op_func)nfsd4_free_stateid,
1713 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1714 .op_name = "OP_FREE_STATEID",
1715 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1720 static const char *nfsd4_op_name(unsigned opnum)
1722 if (opnum < ARRAY_SIZE(nfsd4_ops))
1723 return nfsd4_ops[opnum].op_name;
1724 return "unknown_operation";
1728 #define nfsd4_voidres nfsd4_voidargs
1729 struct nfsd4_voidargs { int dummy; };
1731 static struct svc_procedure nfsd_procedures4[2] = {
1733 .pc_func = (svc_procfunc) nfsd4_proc_null,
1734 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1735 .pc_argsize = sizeof(struct nfsd4_voidargs),
1736 .pc_ressize = sizeof(struct nfsd4_voidres),
1737 .pc_cachetype = RC_NOCACHE,
1740 [NFSPROC4_COMPOUND] = {
1741 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1742 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1743 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1744 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1745 .pc_ressize = sizeof(struct nfsd4_compoundres),
1746 .pc_release = nfsd4_release_compoundargs,
1747 .pc_cachetype = RC_NOCACHE,
1748 .pc_xdrressize = NFSD_BUFSIZE/4,
1752 struct svc_version nfsd_version4 = {
1755 .vs_proc = nfsd_procedures4,
1756 .vs_dispatch = nfsd_dispatch,
1757 .vs_xdrsize = NFS4_SVC_XDRSIZE,