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Diffstat (limited to 'fs/exportfs/expfs.c')
-rw-r--r--fs/exportfs/expfs.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 07ea3d62b298..4f2dd4ab4486 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -427,7 +427,7 @@ EXPORT_SYMBOL_GPL(exportfs_encode_fh);
struct dentry *
exportfs_decode_fh_raw(struct vfsmount *mnt, struct fid *fid, int fh_len,
- int fileid_type,
+ int fileid_type, unsigned int flags,
int (*acceptable)(void *, struct dentry *),
void *context)
{
@@ -445,6 +445,11 @@ exportfs_decode_fh_raw(struct vfsmount *mnt, struct fid *fid, int fh_len,
if (IS_ERR_OR_NULL(result))
return result;
+ if ((flags & EXPORT_FH_DIR_ONLY) && !d_is_dir(result)) {
+ err = -ENOTDIR;
+ goto err_result;
+ }
+
/*
* If no acceptance criteria was specified by caller, a disconnected
* dentry is also accepatable. Callers may use this mode to query if
@@ -581,7 +586,7 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
{
struct dentry *ret;
- ret = exportfs_decode_fh_raw(mnt, fid, fh_len, fileid_type,
+ ret = exportfs_decode_fh_raw(mnt, fid, fh_len, fileid_type, 0,
acceptable, context);
if (IS_ERR_OR_NULL(ret)) {
if (ret == ERR_PTR(-ENOMEM))