4 * Server-side procedures for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 * Note: some routines in this file are just trivial wrappers
38 * (e.g. nfsd4_lookup()) defined solely for the sake of consistent
39 * naming. Since all such routines have been declared "inline",
40 * there shouldn't be any associated overhead. At some point in
41 * the future, I might inline these "by hand" to clean up a
45 #include <linux/param.h>
46 #include <linux/major.h>
47 #include <linux/slab.h>
48 #include <linux/file.h>
50 #include <linux/sunrpc/svc.h>
51 #include <linux/nfsd/nfsd.h>
52 #include <linux/nfsd/cache.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfsd/state.h>
55 #include <linux/nfsd/xdr4.h>
56 #include <linux/nfs4_acl.h>
58 #define NFSDDBG_FACILITY NFSDDBG_PROC
61 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
66 cache_get(&src->fh_export->h);
71 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
75 if (open->op_truncate &&
76 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
80 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
82 if (open->op_share_deny & NFS4_SHARE_ACCESS_WRITE)
83 accmode |= (MAY_WRITE | MAY_TRUNC);
84 accmode |= MAY_OWNER_OVERRIDE;
86 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
92 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
97 fh_init(&resfh, NFS4_FHSIZE);
98 open->op_truncate = 0;
100 if (open->op_create) {
102 * Note: create modes (UNCHECKED,GUARDED...) are the same
105 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
106 open->op_fname.len, &open->op_iattr,
107 &resfh, open->op_createmode,
108 (u32 *)open->op_verf.data, &open->op_truncate);
111 status = nfsd_lookup(rqstp, current_fh,
112 open->op_fname.data, open->op_fname.len, &resfh);
113 fh_unlock(current_fh);
117 set_change_info(&open->op_cinfo, current_fh);
119 /* set reply cache */
120 fh_dup2(current_fh, &resfh);
121 open->op_stateowner->so_replay.rp_openfh_len =
122 resfh.fh_handle.fh_size;
123 memcpy(open->op_stateowner->so_replay.rp_openfh,
124 &resfh.fh_handle.fh_base,
125 resfh.fh_handle.fh_size);
127 status = do_open_permission(rqstp, current_fh, open);
135 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
139 /* Only reclaims from previously confirmed clients are valid */
140 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
143 /* We don't know the target directory, and therefore can not
144 * set the change info
147 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
149 /* set replay cache */
150 open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size;
151 memcpy(open->op_stateowner->so_replay.rp_openfh,
152 ¤t_fh->fh_handle.fh_base,
153 current_fh->fh_handle.fh_size);
155 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
156 (open->op_iattr.ia_size == 0);
158 status = do_open_permission(rqstp, current_fh, open);
165 nfsd4_open(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
168 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
169 (int)open->op_fname.len, open->op_fname.data,
170 open->op_stateowner);
172 if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
175 if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
176 return nfserr_no_grace;
178 /* This check required by spec. */
179 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
184 /* check seqid for replay. set nfs4_owner */
185 status = nfsd4_process_open1(open);
186 if (status == NFSERR_REPLAY_ME) {
187 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
189 current_fh->fh_handle.fh_size = rp->rp_openfh_len;
190 memcpy(¤t_fh->fh_handle.fh_base, rp->rp_openfh,
192 status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
194 dprintk("nfsd4_open: replay failed"
195 " restoring previous filehandle\n");
197 status = NFSERR_REPLAY_ME;
201 switch (open->op_claim_type) {
202 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
203 status = nfserr_inval;
207 case NFS4_OPEN_CLAIM_NULL:
209 * (1) set CURRENT_FH to the file being opened,
210 * creating it if necessary, (2) set open->op_cinfo,
211 * (3) set open->op_truncate if the file is to be
212 * truncated after opening, (4) do permission checking.
214 status = do_open_lookup(rqstp, current_fh, open);
218 case NFS4_OPEN_CLAIM_PREVIOUS:
220 * The CURRENT_FH is already set to the file being
221 * opened. (1) set open->op_cinfo, (2) set
222 * open->op_truncate if the file is to be truncated
223 * after opening, (3) do permission checking.
225 status = do_open_fhandle(rqstp, current_fh, open);
229 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
230 printk("NFSD: unsupported OPEN claim type %d\n",
231 open->op_claim_type);
232 status = nfserr_notsupp;
235 printk("NFSD: Invalid OPEN claim type %d\n",
236 open->op_claim_type);
237 status = nfserr_inval;
241 * nfsd4_process_open2() does the actual opening of the file. If
242 * successful, it (1) truncates the file if open->op_truncate was
243 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
245 status = nfsd4_process_open2(rqstp, current_fh, open);
247 if (open->op_stateowner)
248 nfs4_get_stateowner(open->op_stateowner);
254 * filehandle-manipulating ops.
257 nfsd4_getfh(struct svc_fh *current_fh, struct svc_fh **getfh)
259 if (!current_fh->fh_dentry)
260 return nfserr_nofilehandle;
267 nfsd4_putfh(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_putfh *putfh)
270 current_fh->fh_handle.fh_size = putfh->pf_fhlen;
271 memcpy(¤t_fh->fh_handle.fh_base, putfh->pf_fhval, putfh->pf_fhlen);
272 return fh_verify(rqstp, current_fh, 0, MAY_NOP);
276 nfsd4_putrootfh(struct svc_rqst *rqstp, struct svc_fh *current_fh)
281 status = exp_pseudoroot(rqstp->rq_client, current_fh,
284 status = nfserrno(nfsd_setuser(rqstp, current_fh->fh_export));
289 nfsd4_restorefh(struct svc_fh *current_fh, struct svc_fh *save_fh)
291 if (!save_fh->fh_dentry)
292 return nfserr_restorefh;
294 fh_dup2(current_fh, save_fh);
299 nfsd4_savefh(struct svc_fh *current_fh, struct svc_fh *save_fh)
301 if (!current_fh->fh_dentry)
302 return nfserr_nofilehandle;
304 fh_dup2(save_fh, current_fh);
312 nfsd4_access(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_access *access)
314 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
317 access->ac_resp_access = access->ac_req_access;
318 return nfsd_access(rqstp, current_fh, &access->ac_resp_access, &access->ac_supported);
322 nfsd4_commit(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_commit *commit)
326 u32 *p = (u32 *)commit->co_verf.data;
327 *p++ = nfssvc_boot.tv_sec;
328 *p++ = nfssvc_boot.tv_usec;
330 status = nfsd_commit(rqstp, current_fh, commit->co_offset, commit->co_count);
331 if (status == nfserr_symlink)
332 status = nfserr_inval;
337 nfsd4_create(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_create *create)
343 fh_init(&resfh, NFS4_FHSIZE);
345 status = fh_verify(rqstp, current_fh, S_IFDIR, MAY_CREATE);
346 if (status == nfserr_symlink)
347 status = nfserr_notdir;
351 switch (create->cr_type) {
353 /* ugh! we have to null-terminate the linktext, or
354 * vfs_symlink() will choke. it is always safe to
355 * null-terminate by brute force, since at worst we
356 * will overwrite the first byte of the create namelen
357 * in the XDR buffer, which has already been extracted
360 create->cr_linkname[create->cr_linklen] = 0;
362 status = nfsd_symlink(rqstp, current_fh, create->cr_name,
363 create->cr_namelen, create->cr_linkname,
364 create->cr_linklen, &resfh, &create->cr_iattr);
368 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
369 if (MAJOR(rdev) != create->cr_specdata1 ||
370 MINOR(rdev) != create->cr_specdata2)
372 status = nfsd_create(rqstp, current_fh, create->cr_name,
373 create->cr_namelen, &create->cr_iattr,
374 S_IFBLK, rdev, &resfh);
378 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
379 if (MAJOR(rdev) != create->cr_specdata1 ||
380 MINOR(rdev) != create->cr_specdata2)
382 status = nfsd_create(rqstp, current_fh, create->cr_name,
383 create->cr_namelen, &create->cr_iattr,
384 S_IFCHR, rdev, &resfh);
388 status = nfsd_create(rqstp, current_fh, create->cr_name,
389 create->cr_namelen, &create->cr_iattr,
390 S_IFSOCK, 0, &resfh);
394 status = nfsd_create(rqstp, current_fh, create->cr_name,
395 create->cr_namelen, &create->cr_iattr,
400 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
401 status = nfsd_create(rqstp, current_fh, create->cr_name,
402 create->cr_namelen, &create->cr_iattr,
407 status = nfserr_badtype;
411 fh_unlock(current_fh);
412 set_change_info(&create->cr_cinfo, current_fh);
413 fh_dup2(current_fh, &resfh);
421 nfsd4_getattr(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_getattr *getattr)
425 status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
429 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
432 getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
433 getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
435 getattr->ga_fhp = current_fh;
440 nfsd4_link(struct svc_rqst *rqstp, struct svc_fh *current_fh,
441 struct svc_fh *save_fh, struct nfsd4_link *link)
443 int status = nfserr_nofilehandle;
445 if (!save_fh->fh_dentry)
447 status = nfsd_link(rqstp, current_fh, link->li_name, link->li_namelen, save_fh);
449 set_change_info(&link->li_cinfo, current_fh);
454 nfsd4_lookupp(struct svc_rqst *rqstp, struct svc_fh *current_fh)
456 struct svc_fh tmp_fh;
459 fh_init(&tmp_fh, NFS4_FHSIZE);
460 if((ret = exp_pseudoroot(rqstp->rq_client, &tmp_fh,
461 &rqstp->rq_chandle)) != 0)
463 if (tmp_fh.fh_dentry == current_fh->fh_dentry) {
468 return nfsd_lookup(rqstp, current_fh, "..", 2, current_fh);
472 nfsd4_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lookup *lookup)
474 return nfsd_lookup(rqstp, current_fh, lookup->lo_name, lookup->lo_len, current_fh);
478 nfsd4_read(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_read *read)
482 /* no need to check permission - this will be done in nfsd_read() */
484 read->rd_filp = NULL;
485 if (read->rd_offset >= OFFSET_MAX)
490 if ((status = nfs4_preprocess_stateid_op(current_fh, &read->rd_stateid,
491 CHECK_FH | RD_STATE, &read->rd_filp))) {
492 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
496 get_file(read->rd_filp);
500 read->rd_rqstp = rqstp;
501 read->rd_fhp = current_fh;
506 nfsd4_readdir(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_readdir *readdir)
508 u64 cookie = readdir->rd_cookie;
509 static const nfs4_verifier zeroverf;
511 /* no need to check permission - this will be done in nfsd_readdir() */
513 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
516 readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
517 readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
519 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
520 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
521 return nfserr_bad_cookie;
523 readdir->rd_rqstp = rqstp;
524 readdir->rd_fhp = current_fh;
529 nfsd4_readlink(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_readlink *readlink)
531 readlink->rl_rqstp = rqstp;
532 readlink->rl_fhp = current_fh;
537 nfsd4_remove(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_remove *remove)
543 status = nfsd_unlink(rqstp, current_fh, 0, remove->rm_name, remove->rm_namelen);
544 if (status == nfserr_symlink)
545 return nfserr_notdir;
547 fh_unlock(current_fh);
548 set_change_info(&remove->rm_cinfo, current_fh);
554 nfsd4_rename(struct svc_rqst *rqstp, struct svc_fh *current_fh,
555 struct svc_fh *save_fh, struct nfsd4_rename *rename)
557 int status = nfserr_nofilehandle;
559 if (!save_fh->fh_dentry)
561 if (nfs4_in_grace() && !(save_fh->fh_export->ex_flags
562 & NFSEXP_NOSUBTREECHECK))
564 status = nfsd_rename(rqstp, save_fh, rename->rn_sname,
565 rename->rn_snamelen, current_fh,
566 rename->rn_tname, rename->rn_tnamelen);
568 /* the underlying filesystem returns different error's than required
569 * by NFSv4. both save_fh and current_fh have been verified.. */
570 if (status == nfserr_isdir)
571 status = nfserr_exist;
572 else if ((status == nfserr_notdir) &&
573 (S_ISDIR(save_fh->fh_dentry->d_inode->i_mode) &&
574 S_ISDIR(current_fh->fh_dentry->d_inode->i_mode)))
575 status = nfserr_exist;
576 else if (status == nfserr_symlink)
577 status = nfserr_notdir;
580 set_change_info(&rename->rn_sinfo, current_fh);
581 set_change_info(&rename->rn_tinfo, save_fh);
587 nfsd4_setattr(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_setattr *setattr)
591 if (!current_fh->fh_dentry)
592 return nfserr_nofilehandle;
595 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
597 if ((status = nfs4_preprocess_stateid_op(current_fh,
598 &setattr->sa_stateid,
599 CHECK_FH | WR_STATE, NULL))) {
600 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
606 if (setattr->sa_acl != NULL)
607 status = nfsd4_set_nfs4_acl(rqstp, current_fh, setattr->sa_acl);
610 status = nfsd_setattr(rqstp, current_fh, &setattr->sa_iattr,
620 nfsd4_write(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_write *write)
622 stateid_t *stateid = &write->wr_stateid;
623 struct file *filp = NULL;
627 /* no need to check permission - this will be done in nfsd_write() */
629 if (write->wr_offset >= OFFSET_MAX)
633 if ((status = nfs4_preprocess_stateid_op(current_fh, stateid,
634 CHECK_FH | WR_STATE, &filp))) {
635 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
642 write->wr_bytes_written = write->wr_buflen;
643 write->wr_how_written = write->wr_stable_how;
644 p = (u32 *)write->wr_verifier.data;
645 *p++ = nfssvc_boot.tv_sec;
646 *p++ = nfssvc_boot.tv_usec;
648 status = nfsd_write(rqstp, current_fh, filp, write->wr_offset,
649 write->wr_vec, write->wr_vlen, write->wr_buflen,
650 &write->wr_how_written);
654 if (status == nfserr_symlink)
655 status = nfserr_inval;
662 /* This routine never returns NFS_OK! If there are no other errors, it
663 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
664 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
665 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
668 nfsd4_verify(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_verify *verify)
674 status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
678 if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
679 || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
680 return nfserr_attrnotsupp;
681 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
682 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
684 if (verify->ve_attrlen & 3)
688 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
690 count = 4 + (verify->ve_attrlen >> 2);
691 buf = kmalloc(count << 2, GFP_KERNEL);
693 return nfserr_resource;
695 status = nfsd4_encode_fattr(current_fh, current_fh->fh_export,
696 current_fh->fh_dentry, buf,
697 &count, verify->ve_bmval,
700 /* this means that nfsd4_encode_fattr() ran out of space */
701 if (status == nfserr_resource && count == 0)
702 status = nfserr_not_same;
707 status = nfserr_not_same;
708 if (ntohl(*p++) != verify->ve_attrlen)
710 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
711 status = nfserr_same;
722 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
732 nfsd4_proc_compound(struct svc_rqst *rqstp,
733 struct nfsd4_compoundargs *args,
734 struct nfsd4_compoundres *resp)
737 struct svc_fh *current_fh = NULL;
738 struct svc_fh *save_fh = NULL;
739 struct nfs4_stateowner *replay_owner = NULL;
740 int slack_space; /* in words, not bytes! */
743 status = nfserr_resource;
744 current_fh = kmalloc(sizeof(*current_fh), GFP_KERNEL);
745 if (current_fh == NULL)
747 fh_init(current_fh, NFS4_FHSIZE);
748 save_fh = kmalloc(sizeof(*save_fh), GFP_KERNEL);
751 fh_init(save_fh, NFS4_FHSIZE);
753 resp->xbuf = &rqstp->rq_res;
754 resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
755 resp->tagp = resp->p;
756 /* reserve space for: taglen, tag, and opcnt */
757 resp->p += 2 + XDR_QUADLEN(args->taglen);
758 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
759 resp->taglen = args->taglen;
760 resp->tag = args->tag;
765 * According to RFC3010, this takes precedence over all other errors.
767 status = nfserr_minor_vers_mismatch;
768 if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
772 while (!status && resp->opcnt < args->opcnt) {
773 op = &args->ops[resp->opcnt++];
776 * The XDR decode routines may have pre-set op->status;
777 * for example, if there is a miscellaneous XDR error
778 * it will be set to nfserr_bad_xdr.
783 /* We must be able to encode a successful response to
784 * this operation, with enough room left over to encode a
785 * failed response to the next operation. If we don't
786 * have enough room, fail with ERR_RESOURCE.
788 /* FIXME - is slack_space *really* words, or bytes??? - neilb */
789 slack_space = (char *)resp->end - (char *)resp->p;
790 if (slack_space < COMPOUND_SLACK_SPACE + COMPOUND_ERR_SLACK_SPACE) {
791 BUG_ON(slack_space < COMPOUND_ERR_SLACK_SPACE);
792 op->status = nfserr_resource;
796 /* All operations except RENEW, SETCLIENTID, RESTOREFH
797 * SETCLIENTID_CONFIRM, PUTFH and PUTROOTFH
798 * require a valid current filehandle
800 * SETATTR NOFILEHANDLE error handled in nfsd4_setattr
801 * due to required returned bitmap argument
803 if ((!current_fh->fh_dentry) &&
804 !((op->opnum == OP_PUTFH) || (op->opnum == OP_PUTROOTFH) ||
805 (op->opnum == OP_SETCLIENTID) ||
806 (op->opnum == OP_SETCLIENTID_CONFIRM) ||
807 (op->opnum == OP_RENEW) || (op->opnum == OP_RESTOREFH) ||
808 (op->opnum == OP_RELEASE_LOCKOWNER) ||
809 (op->opnum == OP_SETATTR))) {
810 op->status = nfserr_nofilehandle;
815 op->status = nfsd4_access(rqstp, current_fh, &op->u.access);
818 op->status = nfsd4_close(rqstp, current_fh, &op->u.close);
819 replay_owner = op->u.close.cl_stateowner;
822 op->status = nfsd4_commit(rqstp, current_fh, &op->u.commit);
825 op->status = nfsd4_create(rqstp, current_fh, &op->u.create);
828 op->status = nfsd4_delegreturn(rqstp, current_fh, &op->u.delegreturn);
831 op->status = nfsd4_getattr(rqstp, current_fh, &op->u.getattr);
834 op->status = nfsd4_getfh(current_fh, &op->u.getfh);
837 op->status = nfsd4_link(rqstp, current_fh, save_fh, &op->u.link);
840 op->status = nfsd4_lock(rqstp, current_fh, &op->u.lock);
841 replay_owner = op->u.lock.lk_stateowner;
844 op->status = nfsd4_lockt(rqstp, current_fh, &op->u.lockt);
847 op->status = nfsd4_locku(rqstp, current_fh, &op->u.locku);
848 replay_owner = op->u.locku.lu_stateowner;
851 op->status = nfsd4_lookup(rqstp, current_fh, &op->u.lookup);
854 op->status = nfsd4_lookupp(rqstp, current_fh);
857 op->status = nfsd4_verify(rqstp, current_fh, &op->u.nverify);
858 if (op->status == nfserr_not_same)
862 op->status = nfsd4_open(rqstp, current_fh, &op->u.open);
863 replay_owner = op->u.open.op_stateowner;
865 case OP_OPEN_CONFIRM:
866 op->status = nfsd4_open_confirm(rqstp, current_fh, &op->u.open_confirm);
867 replay_owner = op->u.open_confirm.oc_stateowner;
869 case OP_OPEN_DOWNGRADE:
870 op->status = nfsd4_open_downgrade(rqstp, current_fh, &op->u.open_downgrade);
871 replay_owner = op->u.open_downgrade.od_stateowner;
874 op->status = nfsd4_putfh(rqstp, current_fh, &op->u.putfh);
877 op->status = nfsd4_putrootfh(rqstp, current_fh);
880 op->status = nfsd4_read(rqstp, current_fh, &op->u.read);
883 op->status = nfsd4_readdir(rqstp, current_fh, &op->u.readdir);
886 op->status = nfsd4_readlink(rqstp, current_fh, &op->u.readlink);
889 op->status = nfsd4_remove(rqstp, current_fh, &op->u.remove);
892 op->status = nfsd4_rename(rqstp, current_fh, save_fh, &op->u.rename);
895 op->status = nfsd4_renew(&op->u.renew);
898 op->status = nfsd4_restorefh(current_fh, save_fh);
901 op->status = nfsd4_savefh(current_fh, save_fh);
904 op->status = nfsd4_setattr(rqstp, current_fh, &op->u.setattr);
907 op->status = nfsd4_setclientid(rqstp, &op->u.setclientid);
909 case OP_SETCLIENTID_CONFIRM:
910 op->status = nfsd4_setclientid_confirm(rqstp, &op->u.setclientid_confirm);
913 op->status = nfsd4_verify(rqstp, current_fh, &op->u.verify);
914 if (op->status == nfserr_same)
918 op->status = nfsd4_write(rqstp, current_fh, &op->u.write);
920 case OP_RELEASE_LOCKOWNER:
921 op->status = nfsd4_release_lockowner(rqstp, &op->u.release_lockowner);
924 BUG_ON(op->status == nfs_ok);
929 if (op->status == NFSERR_REPLAY_ME) {
930 op->replay = &replay_owner->so_replay;
931 nfsd4_encode_replay(resp, op);
932 status = op->status = op->replay->rp_status;
934 nfsd4_encode_operation(resp, op);
937 if (replay_owner && (replay_owner != (void *)(-1))) {
938 nfs4_put_stateowner(replay_owner);
941 /* XXX Ugh, we need to get rid of this kind of special case: */
942 if (op->opnum == OP_READ && op->u.read.rd_filp)
943 fput(op->u.read.rd_filp);
947 nfsd4_release_compoundargs(args);
957 #define nfs4svc_decode_voidargs NULL
958 #define nfs4svc_release_void NULL
959 #define nfsd4_voidres nfsd4_voidargs
960 #define nfs4svc_release_compound NULL
961 struct nfsd4_voidargs { int dummy; };
963 #define PROC(name, argt, rest, relt, cache, respsize) \
964 { (svc_procfunc) nfsd4_proc_##name, \
965 (kxdrproc_t) nfs4svc_decode_##argt##args, \
966 (kxdrproc_t) nfs4svc_encode_##rest##res, \
967 (kxdrproc_t) nfs4svc_release_##relt, \
968 sizeof(struct nfsd4_##argt##args), \
969 sizeof(struct nfsd4_##rest##res), \
976 * TODO: At the present time, the NFSv4 server does not do XID caching
977 * of requests. Implementing XID caching would not be a serious problem,
978 * although it would require a mild change in interfaces since one
979 * doesn't know whether an NFSv4 request is idempotent until after the
980 * XDR decode. However, XID caching totally confuses pynfs (Peter
981 * Astrand's regression testsuite for NFSv4 servers), which reuses
982 * XID's liberally, so I've left it unimplemented until pynfs generates
985 static struct svc_procedure nfsd_procedures4[2] = {
986 PROC(null, void, void, void, RC_NOCACHE, 1),
987 PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE)
990 struct svc_version nfsd_version4 = {
993 .vs_proc = nfsd_procedures4,
994 .vs_dispatch = nfsd_dispatch,
995 .vs_xdrsize = NFS4_SVC_XDRSIZE,