diff options
| author | Dave Hansen <haveblue@us.ibm.com> | 2008-02-16 01:37:45 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-04-19 08:25:34 +0400 |
| commit | 75c3f29de7451677c59580b0a959f694f36aac28 (patch) | |
| tree | c82ad50102bfa38f2dc6bb0f763cde9f3dff3790 /fs/nfsd | |
| parent | 463c3197263bd26ac59a00d2484990e17e35c50e (diff) | |
| download | linux-75c3f29de7451677c59580b0a959f694f36aac28.tar.xz | |
[PATCH] r/o bind mounts: write counts for link/symlink
[AV: add missing nfsd pieces]
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/vfs.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 14d582467029..71f899482306 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1542,6 +1542,10 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp, if (iap && (iap->ia_valid & ATTR_MODE)) mode = iap->ia_mode & S_IALLUGO; + host_err = mnt_want_write(fhp->fh_export->ex_path.mnt); + if (host_err) + goto out_nfserr; + if (unlikely(path[plen] != 0)) { char *path_alloced = kmalloc(plen+1, GFP_KERNEL); if (path_alloced == NULL) @@ -1562,6 +1566,8 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp, err = nfserrno(host_err); fh_unlock(fhp); + mnt_drop_write(fhp->fh_export->ex_path.mnt); + cerr = fh_compose(resfhp, fhp->fh_export, dnew, fhp); dput(dnew); if (err==0) err = cerr; @@ -1612,6 +1618,11 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, dold = tfhp->fh_dentry; dest = dold->d_inode; + host_err = mnt_want_write(tfhp->fh_export->ex_path.mnt); + if (host_err) { + err = nfserrno(host_err); + goto out_dput; + } host_err = vfs_link(dold, dirp, dnew); if (!host_err) { if (EX_ISSYNC(ffhp->fh_export)) { @@ -1625,7 +1636,8 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, else err = nfserrno(host_err); } - + mnt_drop_write(tfhp->fh_export->ex_path.mnt); +out_dput: dput(dnew); out_unlock: fh_unlock(ffhp); |