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Diffstat (limited to 'fs/nfsd/nfsfh.c')
-rw-r--r--fs/nfsd/nfsfh.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index a8919444c460..cfe7500d5847 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -59,14 +59,20 @@ static int nfsd_acceptable(void *expv, struct dentry *dentry)
* the write call).
*/
static inline __be32
-nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, umode_t requested)
+nfsd_mode_check(struct svc_rqst *rqstp, struct dentry *dentry,
+ umode_t requested)
{
- mode &= S_IFMT;
+ umode_t mode = d_inode(dentry)->i_mode & S_IFMT;
if (requested == 0) /* the caller doesn't care */
return nfs_ok;
- if (mode == requested)
+ if (mode == requested) {
+ if (mode == S_IFDIR && !d_can_lookup(dentry)) {
+ WARN_ON_ONCE(1);
+ return nfserr_notdir;
+ }
return nfs_ok;
+ }
/*
* v4 has an error more specific than err_notdir which we should
* return in preference to err_notdir:
@@ -298,7 +304,7 @@ out:
* that it expects something not of the given type.
*
* @access is formed from the NFSD_MAY_* constants defined in
- * include/linux/nfsd/nfsd.h.
+ * fs/nfsd/vfs.h.
*/
__be32
fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type, int access)
@@ -340,7 +346,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type, int access)
if (error)
goto out;
- error = nfsd_mode_check(rqstp, d_inode(dentry)->i_mode, type);
+ error = nfsd_mode_check(rqstp, dentry, type);
if (error)
goto out;
@@ -533,7 +539,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
* the reference filehandle (if it is in the same export)
* or the export options.
*/
- set_version_and_fsid_type(fhp, exp, ref_fh);
+ set_version_and_fsid_type(fhp, exp, ref_fh);
if (ref_fh == fhp)
fh_put(ref_fh);