NFS: Ensure we return the dirent->d_type when it is known

Store the dirent->d_type in the struct nfs_cache_array_entry so that we
can use it in getdents() calls.

This fixes a regression with the new readdir code.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index ced7291..8ea4a41 100644 (file)
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -162,6 +162,7 @@ struct nfs_cache_array_entry {
        u64 cookie;
        u64 ino;
        struct qstr string;
+       unsigned char d_type;
 };
 
 struct nfs_cache_array {
@@ -265,6 +266,7 @@ int nfs_readdir_add_to_array(struct nfs_entry *entry, struct page *page)
 
        cache_entry->cookie = entry->prev_cookie;
        cache_entry->ino = entry->ino;
+       cache_entry->d_type = entry->d_type;
        ret = nfs_readdir_make_qstr(&cache_entry->string, entry->name, entry->len);
        if (ret)
                goto out;
@@ -701,7 +703,6 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
        int i = 0;
        int res = 0;
        struct nfs_cache_array *array = NULL;
-       unsigned int d_type = DT_UNKNOWN;
 
        array = nfs_readdir_get_array(desc->page);
        if (IS_ERR(array)) {
@@ -711,11 +712,11 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
 
        for (i = desc->cache_entry_index; i < array->size; i++) {
                struct nfs_cache_array_entry *ent;
-               d_type = DT_UNKNOWN;
 
                ent = &array->array[i];
                if (filldir(dirent, ent->string.name, ent->string.len,
-                   file->f_pos, nfs_compat_user_ino64(ent->ino), d_type) < 0) {
+                   file->f_pos, nfs_compat_user_ino64(ent->ino),
+                   ent->d_type) < 0) {
                        desc->eof = 1;
                        break;
                }

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index db08ff3..e6356b7 100644 (file)
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -361,6 +361,15 @@ unsigned int nfs_page_length(struct page *page)
        return 0;
 }
 
+/*
+ * Convert a umode to a dirent->d_type
+ */
+static inline
+unsigned char nfs_umode_to_dtype(umode_t mode)
+{
+       return (mode >> 12) & 15;
+}
+
 /*
  * Determine the number of pages in an array of length 'len' and
  * with a base offset of 'base'

diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index ab59377..5914a19 100644 (file)
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -485,6 +485,8 @@ nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_se
        entry->prev_cookie        = entry->cookie;
        entry->cookie     = ntohl(*p++);
 
+       entry->d_type = DT_UNKNOWN;
+
        p = xdr_inline_peek(xdr, 8);
        if (p != NULL)
                entry->eof = !p[0] && p[1];

diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index e79e4f5..f6cc60f 100644 (file)
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -622,11 +622,13 @@ nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_s
        entry->prev_cookie = entry->cookie;
        p = xdr_decode_hyper(p, &entry->cookie);
 
+       entry->d_type = DT_UNKNOWN;
        if (plus) {
                entry->fattr->valid = 0;
                p = xdr_decode_post_op_attr_stream(xdr, entry->fattr);
                if (IS_ERR(p))
                        goto out_overflow_exit;
+               entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
                /* In fact, a post_op_fh3: */
                p = xdr_inline_decode(xdr, 4);
                if (unlikely(!p))

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index a3b39cb..9f1826b 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -6208,6 +6208,10 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
        if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
                entry->ino = entry->fattr->fileid;
 
+       entry->d_type = DT_UNKNOWN;
+       if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
+               entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
+
        if (verify_attr_len(xdr, p, len) < 0)
                goto out_overflow;
 

diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index ba6cc8f..80f0719 100644 (file)
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -483,6 +483,7 @@ struct nfs_entry {
        int                     eof;
        struct nfs_fh *         fh;
        struct nfs_fattr *      fattr;
+       unsigned char           d_type;
 };
 
 /*