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| author | J. Bruce Fields <bfields@redhat.com> | 2011-01-11 13:55:46 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2011-01-13 21:04:09 -0500 |
| commit | 4795bb37effb7b8fe77e2d2034545d062d3788a8 (patch) | |
| tree | 1c87d2880d5552005cd7e845594672d0b4babc7f /fs/nfsd | |
| parent | 6a76bebefe15d9a08864f824d7f8d5beaf37c997 (diff) | |
| download | linux-4795bb37effb7b8fe77e2d2034545d062d3788a8.tar.gz linux-4795bb37effb7b8fe77e2d2034545d062d3788a8.tar.bz2 linux-4795bb37effb7b8fe77e2d2034545d062d3788a8.zip | |
nfsd: break lease on unlink, link, and rename
Any change to any of the links pointing to an entry should also break
delegations.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/vfs.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index f97d4356431b..a110adbb3673 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -272,6 +272,13 @@ out: return err; } +static int nfsd_break_lease(struct inode *inode) +{ + if (!S_ISREG(inode->i_mode)) + return 0; + return break_lease(inode, O_WRONLY | O_NONBLOCK); +} + /* * Commit metadata changes to stable storage. */ @@ -414,7 +421,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, err = nfserr_notsync; if (!check_guard || guardtime == inode->i_ctime.tv_sec) { - host_err = break_lease(inode, O_WRONLY | O_NONBLOCK); + host_err = nfsd_break_lease(inode); if (host_err) goto out_nfserr; fh_lock(fhp); @@ -1639,6 +1646,12 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, err = nfserrno(host_err); goto out_dput; } + err = nfserr_noent; + if (!dold->d_inode) + goto out_drop_write; + host_err = nfsd_break_lease(dold->d_inode); + if (host_err) + goto out_drop_write; host_err = vfs_link(dold, dirp, dnew); if (!host_err) { err = nfserrno(commit_metadata(ffhp)); @@ -1650,6 +1663,7 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, else err = nfserrno(host_err); } +out_drop_write: mnt_drop_write(tfhp->fh_export->ex_path.mnt); out_dput: dput(dnew); @@ -1731,15 +1745,17 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen, if (host_err) goto out_dput_new; + host_err = nfsd_break_lease(odentry->d_inode); + if (host_err) + goto out_drop_write; host_err = vfs_rename(fdir, odentry, tdir, ndentry); if (!host_err) { host_err = commit_metadata(tfhp); if (!host_err) host_err = commit_metadata(ffhp); } - +out_drop_write: mnt_drop_write(ffhp->fh_export->ex_path.mnt); - out_dput_new: dput(ndentry); out_dput_old: @@ -1802,11 +1818,14 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, if (host_err) goto out_nfserr; + host_err = nfsd_break_lease(rdentry->d_inode); + if (host_err) + goto out_put; if (type != S_IFDIR) host_err = vfs_unlink(dirp, rdentry); else host_err = vfs_rmdir(dirp, rdentry); - +out_put: dput(rdentry); if (!host_err) |