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>
49 #include <linux/sunrpc/svc.h>
50 #include <linux/nfsd/nfsd.h>
51 #include <linux/nfsd/cache.h>
52 #include <linux/nfs4.h>
53 #include <linux/nfsd/state.h>
54 #include <linux/nfsd/xdr4.h>
55 #include <linux/nfs4_acl.h>
57 #define NFSDDBG_FACILITY NFSDDBG_PROC
60 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
65 cache_get(&src->fh_export->h);
70 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
74 if (open->op_truncate &&
75 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
79 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
81 if (open->op_share_deny & NFS4_SHARE_ACCESS_WRITE)
82 accmode |= (MAY_WRITE | MAY_TRUNC);
83 accmode |= MAY_OWNER_OVERRIDE;
85 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
91 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
96 fh_init(&resfh, NFS4_FHSIZE);
97 open->op_truncate = 0;
99 if (open->op_create) {
101 * Note: create modes (UNCHECKED,GUARDED...) are the same
104 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
105 open->op_fname.len, &open->op_iattr,
106 &resfh, open->op_createmode,
107 (u32 *)open->op_verf.data, &open->op_truncate);
110 status = nfsd_lookup(rqstp, current_fh,
111 open->op_fname.data, open->op_fname.len, &resfh);
112 fh_unlock(current_fh);
116 set_change_info(&open->op_cinfo, current_fh);
118 /* set reply cache */
119 fh_dup2(current_fh, &resfh);
120 /* XXXJBF: keep a saved svc_fh struct instead?? */
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;
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 if (open->op_claim_type == NFS4_OPEN_CLAIM_NULL) {
203 * This block of code will (1) set CURRENT_FH to the file being opened,
204 * creating it if necessary, (2) set open->op_cinfo,
205 * (3) set open->op_truncate if the file is to be truncated
206 * after opening, (4) do permission checking.
208 status = do_open_lookup(rqstp, current_fh, open);
211 } else if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) {
213 * The CURRENT_FH is already set to the file being opened. This
214 * block of code will (1) set open->op_cinfo, (2) set
215 * open->op_truncate if the file is to be truncated after opening,
216 * (3) do permission checking.
218 status = do_open_fhandle(rqstp, current_fh, open);
222 printk("NFSD: unsupported OPEN claim type\n");
223 status = nfserr_inval;
227 * nfsd4_process_open2() does the actual opening of the file. If
228 * successful, it (1) truncates the file if open->op_truncate was
229 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
231 status = nfsd4_process_open2(rqstp, current_fh, open);
233 if (open->op_stateowner)
234 nfs4_get_stateowner(open->op_stateowner);
240 * filehandle-manipulating ops.
243 nfsd4_getfh(struct svc_fh *current_fh, struct svc_fh **getfh)
245 if (!current_fh->fh_dentry)
246 return nfserr_nofilehandle;
253 nfsd4_putfh(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_putfh *putfh)
256 current_fh->fh_handle.fh_size = putfh->pf_fhlen;
257 memcpy(¤t_fh->fh_handle.fh_base, putfh->pf_fhval, putfh->pf_fhlen);
258 return fh_verify(rqstp, current_fh, 0, MAY_NOP);
262 nfsd4_putrootfh(struct svc_rqst *rqstp, struct svc_fh *current_fh)
267 status = exp_pseudoroot(rqstp->rq_client, current_fh,
270 status = nfserrno(nfsd_setuser(rqstp, current_fh->fh_export));
275 nfsd4_restorefh(struct svc_fh *current_fh, struct svc_fh *save_fh)
277 if (!save_fh->fh_dentry)
278 return nfserr_restorefh;
280 fh_dup2(current_fh, save_fh);
285 nfsd4_savefh(struct svc_fh *current_fh, struct svc_fh *save_fh)
287 if (!current_fh->fh_dentry)
288 return nfserr_nofilehandle;
290 fh_dup2(save_fh, current_fh);
298 nfsd4_access(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_access *access)
300 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
303 access->ac_resp_access = access->ac_req_access;
304 return nfsd_access(rqstp, current_fh, &access->ac_resp_access, &access->ac_supported);
308 nfsd4_commit(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_commit *commit)
312 u32 *p = (u32 *)commit->co_verf.data;
313 *p++ = nfssvc_boot.tv_sec;
314 *p++ = nfssvc_boot.tv_usec;
316 status = nfsd_commit(rqstp, current_fh, commit->co_offset, commit->co_count);
317 if (status == nfserr_symlink)
318 status = nfserr_inval;
323 nfsd4_create(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_create *create)
329 fh_init(&resfh, NFS4_FHSIZE);
331 status = fh_verify(rqstp, current_fh, S_IFDIR, MAY_CREATE);
332 if (status == nfserr_symlink)
333 status = nfserr_notdir;
337 switch (create->cr_type) {
339 /* ugh! we have to null-terminate the linktext, or
340 * vfs_symlink() will choke. it is always safe to
341 * null-terminate by brute force, since at worst we
342 * will overwrite the first byte of the create namelen
343 * in the XDR buffer, which has already been extracted
346 create->cr_linkname[create->cr_linklen] = 0;
348 status = nfsd_symlink(rqstp, current_fh, create->cr_name,
349 create->cr_namelen, create->cr_linkname,
350 create->cr_linklen, &resfh, &create->cr_iattr);
354 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
355 if (MAJOR(rdev) != create->cr_specdata1 ||
356 MINOR(rdev) != create->cr_specdata2)
358 status = nfsd_create(rqstp, current_fh, create->cr_name,
359 create->cr_namelen, &create->cr_iattr,
360 S_IFBLK, rdev, &resfh);
364 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
365 if (MAJOR(rdev) != create->cr_specdata1 ||
366 MINOR(rdev) != create->cr_specdata2)
368 status = nfsd_create(rqstp, current_fh, create->cr_name,
369 create->cr_namelen, &create->cr_iattr,
370 S_IFCHR, rdev, &resfh);
374 status = nfsd_create(rqstp, current_fh, create->cr_name,
375 create->cr_namelen, &create->cr_iattr,
376 S_IFSOCK, 0, &resfh);
380 status = nfsd_create(rqstp, current_fh, create->cr_name,
381 create->cr_namelen, &create->cr_iattr,
386 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
387 status = nfsd_create(rqstp, current_fh, create->cr_name,
388 create->cr_namelen, &create->cr_iattr,
393 status = nfserr_badtype;
397 fh_unlock(current_fh);
398 set_change_info(&create->cr_cinfo, current_fh);
399 fh_dup2(current_fh, &resfh);
407 nfsd4_getattr(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_getattr *getattr)
411 status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
415 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
418 getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
419 getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
421 getattr->ga_fhp = current_fh;
426 nfsd4_link(struct svc_rqst *rqstp, struct svc_fh *current_fh,
427 struct svc_fh *save_fh, struct nfsd4_link *link)
429 int status = nfserr_nofilehandle;
431 if (!save_fh->fh_dentry)
433 status = nfsd_link(rqstp, current_fh, link->li_name, link->li_namelen, save_fh);
435 set_change_info(&link->li_cinfo, current_fh);
440 nfsd4_lookupp(struct svc_rqst *rqstp, struct svc_fh *current_fh)
442 struct svc_fh tmp_fh;
445 fh_init(&tmp_fh, NFS4_FHSIZE);
446 if((ret = exp_pseudoroot(rqstp->rq_client, &tmp_fh,
447 &rqstp->rq_chandle)) != 0)
449 if (tmp_fh.fh_dentry == current_fh->fh_dentry) {
454 return nfsd_lookup(rqstp, current_fh, "..", 2, current_fh);
458 nfsd4_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lookup *lookup)
460 return nfsd_lookup(rqstp, current_fh, lookup->lo_name, lookup->lo_len, current_fh);
464 nfsd4_read(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_read *read)
468 /* no need to check permission - this will be done in nfsd_read() */
472 if (read->rd_offset >= OFFSET_MAX)
477 /* For stateid -1, we don't check share reservations. */
478 if (ONE_STATEID(&read->rd_stateid)) {
479 dprintk("NFSD: nfsd4_read: -1 stateid...\n");
483 * For stateid 0, the client doesn't have to have the file open, but
484 * we still check for share reservation conflicts.
486 if (ZERO_STATEID(&read->rd_stateid)) {
487 dprintk("NFSD: nfsd4_read: zero stateid...\n");
488 if ((status = nfs4_share_conflict(current_fh, NFS4_SHARE_DENY_READ))) {
489 dprintk("NFSD: nfsd4_read: conflicting share reservation!\n");
496 if ((status = nfs4_preprocess_stateid_op(current_fh, &read->rd_stateid,
497 CHECK_FH | RD_STATE))) {
498 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
504 read->rd_rqstp = rqstp;
505 read->rd_fhp = current_fh;
510 nfsd4_readdir(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_readdir *readdir)
512 u64 cookie = readdir->rd_cookie;
513 static const nfs4_verifier zeroverf;
515 /* no need to check permission - this will be done in nfsd_readdir() */
517 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
520 readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
521 readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
523 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
524 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
525 return nfserr_bad_cookie;
527 readdir->rd_rqstp = rqstp;
528 readdir->rd_fhp = current_fh;
533 nfsd4_readlink(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_readlink *readlink)
535 readlink->rl_rqstp = rqstp;
536 readlink->rl_fhp = current_fh;
541 nfsd4_remove(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_remove *remove)
545 status = nfsd_unlink(rqstp, current_fh, 0, remove->rm_name, remove->rm_namelen);
546 if (status == nfserr_symlink)
547 return nfserr_notdir;
549 fh_unlock(current_fh);
550 set_change_info(&remove->rm_cinfo, current_fh);
556 nfsd4_rename(struct svc_rqst *rqstp, struct svc_fh *current_fh,
557 struct svc_fh *save_fh, struct nfsd4_rename *rename)
559 int status = nfserr_nofilehandle;
561 if (!save_fh->fh_dentry)
563 status = nfsd_rename(rqstp, save_fh, rename->rn_sname,
564 rename->rn_snamelen, current_fh,
565 rename->rn_tname, rename->rn_tnamelen);
567 /* the underlying filesystem returns different error's than required
568 * by NFSv4. both save_fh and current_fh have been verified.. */
569 if (status == nfserr_isdir)
570 status = nfserr_exist;
571 else if ((status == nfserr_notdir) &&
572 (S_ISDIR(save_fh->fh_dentry->d_inode->i_mode) &&
573 S_ISDIR(current_fh->fh_dentry->d_inode->i_mode)))
574 status = nfserr_exist;
575 else if (status == nfserr_symlink)
576 status = nfserr_notdir;
579 set_change_info(&rename->rn_sinfo, current_fh);
580 set_change_info(&rename->rn_tinfo, save_fh);
586 nfsd4_setattr(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_setattr *setattr)
593 if (!current_fh->fh_dentry)
594 return nfserr_nofilehandle;
597 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
599 status = nfserr_bad_stateid;
600 if (ZERO_STATEID(&setattr->sa_stateid) || ONE_STATEID(&setattr->sa_stateid)) {
601 dprintk("NFSD: nfsd4_setattr: magic stateid!\n");
606 if ((status = nfs4_preprocess_stateid_op(current_fh,
607 &setattr->sa_stateid,
608 CHECK_FH | WR_STATE))) {
609 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
615 if (setattr->sa_acl != NULL)
616 status = nfsd4_set_nfs4_acl(rqstp, current_fh, setattr->sa_acl);
619 status = nfsd_setattr(rqstp, current_fh, &setattr->sa_iattr,
629 nfsd4_write(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_write *write)
631 stateid_t *stateid = &write->wr_stateid;
638 /* no need to check permission - this will be done in nfsd_write() */
640 if (write->wr_offset >= OFFSET_MAX)
644 if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) {
645 dprintk("NFSD: nfsd4_write: zero stateid...\n");
646 if ((status = nfs4_share_conflict(current_fh, NFS4_SHARE_DENY_WRITE))) {
647 dprintk("NFSD: nfsd4_write: conflicting share reservation!\n");
652 if ((status = nfs4_preprocess_stateid_op(current_fh, stateid,
653 CHECK_FH | WR_STATE))) {
654 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
661 write->wr_bytes_written = write->wr_buflen;
662 write->wr_how_written = write->wr_stable_how;
663 p = (u32 *)write->wr_verifier.data;
664 *p++ = nfssvc_boot.tv_sec;
665 *p++ = nfssvc_boot.tv_usec;
667 status = nfsd_write(rqstp, current_fh, write->wr_offset,
668 write->wr_vec, write->wr_vlen, write->wr_buflen,
669 &write->wr_how_written);
670 if (status == nfserr_symlink)
671 status = nfserr_inval;
678 /* This routine never returns NFS_OK! If there are no other errors, it
679 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
680 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
681 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
684 nfsd4_verify(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_verify *verify)
690 status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
694 if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
695 || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
696 return nfserr_attrnotsupp;
697 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
698 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
700 if (verify->ve_attrlen & 3)
704 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
706 count = 4 + (verify->ve_attrlen >> 2);
707 buf = kmalloc(count << 2, GFP_KERNEL);
709 return nfserr_resource;
711 status = nfsd4_encode_fattr(current_fh, current_fh->fh_export,
712 current_fh->fh_dentry, buf,
713 &count, verify->ve_bmval,
716 /* this means that nfsd4_encode_fattr() ran out of space */
717 if (status == nfserr_resource && count == 0)
718 status = nfserr_not_same;
723 status = nfserr_not_same;
724 if (ntohl(*p++) != verify->ve_attrlen)
726 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
727 status = nfserr_same;
738 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
748 nfsd4_proc_compound(struct svc_rqst *rqstp,
749 struct nfsd4_compoundargs *args,
750 struct nfsd4_compoundres *resp)
753 struct svc_fh *current_fh = NULL;
754 struct svc_fh *save_fh = NULL;
755 struct nfs4_stateowner *replay_owner = NULL;
756 int slack_space; /* in words, not bytes! */
759 status = nfserr_resource;
760 current_fh = kmalloc(sizeof(*current_fh), GFP_KERNEL);
761 if (current_fh == NULL)
763 fh_init(current_fh, NFS4_FHSIZE);
764 save_fh = kmalloc(sizeof(*save_fh), GFP_KERNEL);
767 fh_init(save_fh, NFS4_FHSIZE);
769 resp->xbuf = &rqstp->rq_res;
770 resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
771 resp->tagp = resp->p;
772 /* reserve space for: taglen, tag, and opcnt */
773 resp->p += 2 + XDR_QUADLEN(args->taglen);
774 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
775 resp->taglen = args->taglen;
776 resp->tag = args->tag;
781 * According to RFC3010, this takes precedence over all other errors.
783 status = nfserr_minor_vers_mismatch;
784 if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
788 while (!status && resp->opcnt < args->opcnt) {
789 op = &args->ops[resp->opcnt++];
792 * The XDR decode routines may have pre-set op->status;
793 * for example, if there is a miscellaneous XDR error
794 * it will be set to nfserr_bad_xdr.
799 /* We must be able to encode a successful response to
800 * this operation, with enough room left over to encode a
801 * failed response to the next operation. If we don't
802 * have enough room, fail with ERR_RESOURCE.
804 /* FIXME - is slack_space *really* words, or bytes??? - neilb */
805 slack_space = (char *)resp->end - (char *)resp->p;
806 if (slack_space < COMPOUND_SLACK_SPACE + COMPOUND_ERR_SLACK_SPACE) {
807 BUG_ON(slack_space < COMPOUND_ERR_SLACK_SPACE);
808 op->status = nfserr_resource;
812 /* All operations except RENEW, SETCLIENTID, RESTOREFH
813 * SETCLIENTID_CONFIRM, PUTFH and PUTROOTFH
814 * require a valid current filehandle
816 * SETATTR NOFILEHANDLE error handled in nfsd4_setattr
817 * due to required returned bitmap argument
819 if ((!current_fh->fh_dentry) &&
820 !((op->opnum == OP_PUTFH) || (op->opnum == OP_PUTROOTFH) ||
821 (op->opnum == OP_SETCLIENTID) ||
822 (op->opnum == OP_SETCLIENTID_CONFIRM) ||
823 (op->opnum == OP_RENEW) || (op->opnum == OP_RESTOREFH) ||
824 (op->opnum == OP_RELEASE_LOCKOWNER) ||
825 (op->opnum == OP_SETATTR))) {
826 op->status = nfserr_nofilehandle;
831 op->status = nfsd4_access(rqstp, current_fh, &op->u.access);
834 op->status = nfsd4_close(rqstp, current_fh, &op->u.close);
835 replay_owner = op->u.close.cl_stateowner;
838 op->status = nfsd4_commit(rqstp, current_fh, &op->u.commit);
841 op->status = nfsd4_create(rqstp, current_fh, &op->u.create);
844 op->status = nfsd4_delegreturn(rqstp, current_fh, &op->u.delegreturn);
847 op->status = nfsd4_getattr(rqstp, current_fh, &op->u.getattr);
850 op->status = nfsd4_getfh(current_fh, &op->u.getfh);
853 op->status = nfsd4_link(rqstp, current_fh, save_fh, &op->u.link);
856 op->status = nfsd4_lock(rqstp, current_fh, &op->u.lock);
857 replay_owner = op->u.lock.lk_stateowner;
860 op->status = nfsd4_lockt(rqstp, current_fh, &op->u.lockt);
863 op->status = nfsd4_locku(rqstp, current_fh, &op->u.locku);
864 replay_owner = op->u.locku.lu_stateowner;
867 op->status = nfsd4_lookup(rqstp, current_fh, &op->u.lookup);
870 op->status = nfsd4_lookupp(rqstp, current_fh);
873 op->status = nfsd4_verify(rqstp, current_fh, &op->u.nverify);
874 if (op->status == nfserr_not_same)
878 op->status = nfsd4_open(rqstp, current_fh, &op->u.open);
879 replay_owner = op->u.open.op_stateowner;
881 case OP_OPEN_CONFIRM:
882 op->status = nfsd4_open_confirm(rqstp, current_fh, &op->u.open_confirm);
883 replay_owner = op->u.open_confirm.oc_stateowner;
885 case OP_OPEN_DOWNGRADE:
886 op->status = nfsd4_open_downgrade(rqstp, current_fh, &op->u.open_downgrade);
887 replay_owner = op->u.open_downgrade.od_stateowner;
890 op->status = nfsd4_putfh(rqstp, current_fh, &op->u.putfh);
893 op->status = nfsd4_putrootfh(rqstp, current_fh);
896 op->status = nfsd4_read(rqstp, current_fh, &op->u.read);
899 op->status = nfsd4_readdir(rqstp, current_fh, &op->u.readdir);
902 op->status = nfsd4_readlink(rqstp, current_fh, &op->u.readlink);
905 op->status = nfsd4_remove(rqstp, current_fh, &op->u.remove);
908 op->status = nfsd4_rename(rqstp, current_fh, save_fh, &op->u.rename);
911 op->status = nfsd4_renew(&op->u.renew);
914 op->status = nfsd4_restorefh(current_fh, save_fh);
917 op->status = nfsd4_savefh(current_fh, save_fh);
920 op->status = nfsd4_setattr(rqstp, current_fh, &op->u.setattr);
923 op->status = nfsd4_setclientid(rqstp, &op->u.setclientid);
925 case OP_SETCLIENTID_CONFIRM:
926 op->status = nfsd4_setclientid_confirm(rqstp, &op->u.setclientid_confirm);
929 op->status = nfsd4_verify(rqstp, current_fh, &op->u.verify);
930 if (op->status == nfserr_same)
934 op->status = nfsd4_write(rqstp, current_fh, &op->u.write);
936 case OP_RELEASE_LOCKOWNER:
937 op->status = nfsd4_release_lockowner(rqstp, &op->u.release_lockowner);
940 BUG_ON(op->status == nfs_ok);
945 if (op->status == NFSERR_REPLAY_ME) {
946 op->replay = &replay_owner->so_replay;
947 nfsd4_encode_replay(resp, op);
948 status = op->status = op->replay->rp_status;
950 nfsd4_encode_operation(resp, op);
953 if (replay_owner && (replay_owner != (void *)(-1))) {
954 nfs4_put_stateowner(replay_owner);
960 nfsd4_release_compoundargs(args);
970 #define nfs4svc_decode_voidargs NULL
971 #define nfs4svc_release_void NULL
972 #define nfsd4_voidres nfsd4_voidargs
973 #define nfs4svc_release_compound NULL
974 struct nfsd4_voidargs { int dummy; };
976 #define PROC(name, argt, rest, relt, cache, respsize) \
977 { (svc_procfunc) nfsd4_proc_##name, \
978 (kxdrproc_t) nfs4svc_decode_##argt##args, \
979 (kxdrproc_t) nfs4svc_encode_##rest##res, \
980 (kxdrproc_t) nfs4svc_release_##relt, \
981 sizeof(struct nfsd4_##argt##args), \
982 sizeof(struct nfsd4_##rest##res), \
989 * TODO: At the present time, the NFSv4 server does not do XID caching
990 * of requests. Implementing XID caching would not be a serious problem,
991 * although it would require a mild change in interfaces since one
992 * doesn't know whether an NFSv4 request is idempotent until after the
993 * XDR decode. However, XID caching totally confuses pynfs (Peter
994 * Astrand's regression testsuite for NFSv4 servers), which reuses
995 * XID's liberally, so I've left it unimplemented until pynfs generates
998 static struct svc_procedure nfsd_procedures4[2] = {
999 PROC(null, void, void, void, RC_NOCACHE, 1),
1000 PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE)
1003 struct svc_version nfsd_version4 = {
1006 .vs_proc = nfsd_procedures4,
1007 .vs_dispatch = nfsd_dispatch,
1008 .vs_xdrsize = NFS4_SVC_XDRSIZE,