nfsfh.c (bf61c8840efe60fd8f91446860b63338fb424158) nfsfh.c (97e47fa11deae10ae72aa1109e700565c57152f5)
1/*
2 * NFS server file handle treatment.
3 *
4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
5 * Portions Copyright (C) 1999 G. Allen Morris III <gam3@acm.org>
6 * Extensive rewrite by Neil Brown <neilb@cse.unsw.edu.au> Southern-Spring 1999
7 * ... and again Southern-Winter 2001 to support export_operations
8 */

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42 if (err < 0) {
43 dput(parent);
44 break;
45 }
46 dput(tdentry);
47 tdentry = parent;
48 }
49 if (tdentry != exp->ex_path.dentry)
1/*
2 * NFS server file handle treatment.
3 *
4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
5 * Portions Copyright (C) 1999 G. Allen Morris III <gam3@acm.org>
6 * Extensive rewrite by Neil Brown <neilb@cse.unsw.edu.au> Southern-Spring 1999
7 * ... and again Southern-Winter 2001 to support export_operations
8 */

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42 if (err < 0) {
43 dput(parent);
44 break;
45 }
46 dput(tdentry);
47 tdentry = parent;
48 }
49 if (tdentry != exp->ex_path.dentry)
50 dprintk("nfsd_acceptable failed at %p %s\n", tdentry, tdentry->d_name.name);
50 dprintk("nfsd_acceptable failed at %p %pd\n", tdentry, tdentry);
51 rv = (tdentry == exp->ex_path.dentry);
52 dput(tdentry);
53 return rv;
54}
55
56/* Type check. The correct error return for type mismatches does not seem to be
57 * generally agreed upon. SunOS seems to use EISDIR if file isn't S_IFREG; a
58 * comment in the NFSv3 spec says this is incorrect (implementation notes for

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248 if (IS_ERR(dentry)) {
249 if (PTR_ERR(dentry) != -EINVAL)
250 error = nfserrno(PTR_ERR(dentry));
251 goto out;
252 }
253
254 if (S_ISDIR(dentry->d_inode->i_mode) &&
255 (dentry->d_flags & DCACHE_DISCONNECTED)) {
51 rv = (tdentry == exp->ex_path.dentry);
52 dput(tdentry);
53 return rv;
54}
55
56/* Type check. The correct error return for type mismatches does not seem to be
57 * generally agreed upon. SunOS seems to use EISDIR if file isn't S_IFREG; a
58 * comment in the NFSv3 spec says this is incorrect (implementation notes for

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248 if (IS_ERR(dentry)) {
249 if (PTR_ERR(dentry) != -EINVAL)
250 error = nfserrno(PTR_ERR(dentry));
251 goto out;
252 }
253
254 if (S_ISDIR(dentry->d_inode->i_mode) &&
255 (dentry->d_flags & DCACHE_DISCONNECTED)) {
256 printk("nfsd: find_fh_dentry returned a DISCONNECTED directory: %s/%s\n",
257 dentry->d_parent->d_name.name, dentry->d_name.name);
256 printk("nfsd: find_fh_dentry returned a DISCONNECTED directory: %pd2\n",
257 dentry);
258 }
259
260 fhp->fh_dentry = dentry;
261 fhp->fh_export = exp;
262 return 0;
263out:
264 exp_put(exp);
265 return error;

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356 if (error)
357 goto out;
358
359skip_pseudoflavor_check:
360 /* Finally, check access permissions. */
361 error = nfsd_permission(rqstp, exp, dentry, access);
362
363 if (error) {
258 }
259
260 fhp->fh_dentry = dentry;
261 fhp->fh_export = exp;
262 return 0;
263out:
264 exp_put(exp);
265 return error;

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356 if (error)
357 goto out;
358
359skip_pseudoflavor_check:
360 /* Finally, check access permissions. */
361 error = nfsd_permission(rqstp, exp, dentry, access);
362
363 if (error) {
364 dprintk("fh_verify: %s/%s permission failure, "
364 dprintk("fh_verify: %pd2 permission failure, "
365 "acc=%x, error=%d\n",
365 "acc=%x, error=%d\n",
366 dentry->d_parent->d_name.name,
367 dentry->d_name.name,
366 dentry,
368 access, ntohl(error));
369 }
370out:
371 if (error == nfserr_stale)
372 nfsdstats.fh_stale++;
373 return error;
374}
375

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509 * if it is non-null and for the same filesystem, then we should compose
510 * a filehandle which is of the same version, where possible.
511 * Currently, that means that if ref_fh->fh_handle.fh_version == 0xca
512 * Then create a 32byte filehandle using nfs_fhbase_old
513 *
514 */
515
516 struct inode * inode = dentry->d_inode;
367 access, ntohl(error));
368 }
369out:
370 if (error == nfserr_stale)
371 nfsdstats.fh_stale++;
372 return error;
373}
374

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508 * if it is non-null and for the same filesystem, then we should compose
509 * a filehandle which is of the same version, where possible.
510 * Currently, that means that if ref_fh->fh_handle.fh_version == 0xca
511 * Then create a 32byte filehandle using nfs_fhbase_old
512 *
513 */
514
515 struct inode * inode = dentry->d_inode;
517 struct dentry *parent = dentry->d_parent;
518 __u32 *datap;
519 dev_t ex_dev = exp_sb(exp)->s_dev;
520
516 __u32 *datap;
517 dev_t ex_dev = exp_sb(exp)->s_dev;
518
521 dprintk("nfsd: fh_compose(exp %02x:%02x/%ld %s/%s, ino=%ld)\n",
519 dprintk("nfsd: fh_compose(exp %02x:%02x/%ld %pd2, ino=%ld)\n",
522 MAJOR(ex_dev), MINOR(ex_dev),
523 (long) exp->ex_path.dentry->d_inode->i_ino,
520 MAJOR(ex_dev), MINOR(ex_dev),
521 (long) exp->ex_path.dentry->d_inode->i_ino,
524 parent->d_name.name, dentry->d_name.name,
522 dentry,
525 (inode ? inode->i_ino : 0));
526
527 /* Choose filehandle version and fsid type based on
528 * the reference filehandle (if it is in the same export)
529 * or the export options.
530 */
531 set_version_and_fsid_type(fhp, exp, ref_fh);
532
533 if (ref_fh == fhp)
534 fh_put(ref_fh);
535
536 if (fhp->fh_locked || fhp->fh_dentry) {
523 (inode ? inode->i_ino : 0));
524
525 /* Choose filehandle version and fsid type based on
526 * the reference filehandle (if it is in the same export)
527 * or the export options.
528 */
529 set_version_and_fsid_type(fhp, exp, ref_fh);
530
531 if (ref_fh == fhp)
532 fh_put(ref_fh);
533
534 if (fhp->fh_locked || fhp->fh_dentry) {
537 printk(KERN_ERR "fh_compose: fh %s/%s not initialized!\n",
538 parent->d_name.name, dentry->d_name.name);
535 printk(KERN_ERR "fh_compose: fh %pd2 not initialized!\n",
536 dentry);
539 }
540 if (fhp->fh_maxsize < NFS_FHSIZE)
537 }
538 if (fhp->fh_maxsize < NFS_FHSIZE)
541 printk(KERN_ERR "fh_compose: called with maxsize %d! %s/%s\n",
539 printk(KERN_ERR "fh_compose: called with maxsize %d! %pd2\n",
542 fhp->fh_maxsize,
540 fhp->fh_maxsize,
543 parent->d_name.name, dentry->d_name.name);
541 dentry);
544
545 fhp->fh_dentry = dget(dentry); /* our internal copy */
546 fhp->fh_export = exp;
547 cache_get(&exp->h);
548
549 if (fhp->fh_handle.fh_version == 0xca) {
550 /* old style filehandle please */
551 memset(&fhp->fh_handle.fh_base, 0, NFS_FHSIZE);

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608 }
609out:
610 return 0;
611
612out_bad:
613 printk(KERN_ERR "fh_update: fh not verified!\n");
614 goto out;
615out_negative:
542
543 fhp->fh_dentry = dget(dentry); /* our internal copy */
544 fhp->fh_export = exp;
545 cache_get(&exp->h);
546
547 if (fhp->fh_handle.fh_version == 0xca) {
548 /* old style filehandle please */
549 memset(&fhp->fh_handle.fh_base, 0, NFS_FHSIZE);

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606 }
607out:
608 return 0;
609
610out_bad:
611 printk(KERN_ERR "fh_update: fh not verified!\n");
612 goto out;
613out_negative:
616 printk(KERN_ERR "fh_update: %s/%s still negative!\n",
617 dentry->d_parent->d_name.name, dentry->d_name.name);
614 printk(KERN_ERR "fh_update: %pd2 still negative!\n",
615 dentry);
618 goto out;
619}
620
621/*
622 * Release a file handle.
623 */
624void
625fh_put(struct svc_fh *fhp)

--- 66 unchanged lines hidden --- 		616 goto out;
617}
618
619/*
620 * Release a file handle.
621 */
622void
623fh_put(struct svc_fh *fhp)

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