From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
In order to use the open_by_filehandle() operations on NFSv3, we need
to be able to emulate lookupp() so that nfs_get_parent() can be used
to convert disconnected dentries into connected ones.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/nfs3proc.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index acbdf7496d31..6b66b73a50eb 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -209,6 +209,20 @@ nfs3_proc_lookup(struct inode *dir, struct dentry *dentry,
task_flags);
}
+static int nfs3_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr, struct nfs4_label *label)
+{
+ const char dotdot[] = "..";
+ const size_t len = strlen(dotdot);
+ unsigned short task_flags = 0;
+
+ if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL)
+ task_flags |= RPC_TASK_TIMEOUT;
+
+ return __nfs3_proc_lookup(inode, dotdot, len, fhandle, fattr,
+ task_flags);
+}
+
static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs3_accessargs arg = {
@@ -1015,6 +1029,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
+ .lookupp = nfs3_proc_lookupp,
.access = nfs3_proc_access,
.readlink = nfs3_proc_readlink,
.create = nfs3_proc_create,
--
2.26.2
