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authorTrond Myklebust <Trond.Myklebust@netapp.com>2010-11-20 18:43:45 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-11-22 19:24:44 +0100
commit5c346854d8ce6ca91931f8fc9177934257a667d0 (patch)
treede10054f20a2bc3a2fc58ca394854d40aebc8654 /fs/nfs
parentNFS: Buffer overflow in ->decode_dirent() should not be fatal (diff)
downloadlinux-5c346854d8ce6ca91931f8fc9177934257a667d0.tar.xz
linux-5c346854d8ce6ca91931f8fc9177934257a667d0.zip
NFS: Assume eof if the server returns no readdir records
Some servers are known to be buggy w.r.t. this. Deal with them... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/dir.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 662df2a5fad5..2789cb3fc425 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -466,8 +466,9 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
struct xdr_stream stream;
struct xdr_buf buf;
__be32 *ptr = xdr_page;
- int status;
struct nfs_cache_array *array;
+ unsigned int count = 0;
+ int status;
buf.head->iov_base = xdr_page;
buf.head->iov_len = buflen;
@@ -488,6 +489,8 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
break;
}
+ count++;
+
if (desc->plus == 1)
nfs_prime_dcache(desc->file->f_path.dentry, entry);
@@ -496,13 +499,14 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
break;
} while (!entry->eof);
- if (status == -EBADCOOKIE && entry->eof) {
+ if (count == 0 || (status == -EBADCOOKIE && entry->eof == 1)) {
array = nfs_readdir_get_array(page);
if (!IS_ERR(array)) {
array->eof_index = array->size;
status = 0;
nfs_readdir_release_array(page);
- }
+ } else
+ status = PTR_ERR(array);
}
return status;
}