NFS: Fix double d_drop in nfs_instantiate() error path

[linux-2.6-block.git] / fs / nfs / proc.c

diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 5a8b9407ee9a85fce78edf8fb883297a126bc573..0b507bf0f330a9b84cf4373217ca8fdeba46e2b0 100644 (file)
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -425,14 +425,15 @@ nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 }
 
 static int
-nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
-                struct iattr *sattr, struct nfs_fh *fhandle,
-                struct nfs_fattr *fattr)
+nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct qstr *path,
+                struct iattr *sattr)
 {
+       struct nfs_fh fhandle;
+       struct nfs_fattr fattr;
        struct nfs_symlinkargs  arg = {
                .fromfh         = NFS_FH(dir),
-               .fromname       = name->name,
-               .fromlen        = name->len,
+               .fromname       = dentry->d_name.name,
+               .fromlen        = dentry->d_name.len,
                .topath         = path->name,
                .tolen          = path->len,
                .sattr          = sattr
@@ -445,11 +446,23 @@ nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
 
        if (path->len > NFS2_MAXPATHLEN)
                return -ENAMETOOLONG;
-       dprintk("NFS call  symlink %s -> %s\n", name->name, path->name);
-       nfs_fattr_init(fattr);
-       fhandle->size = 0;
+
+       dprintk("NFS call  symlink %s -> %s\n", dentry->d_name.name,
+                       path->name);
        status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
        nfs_mark_for_revalidate(dir);
+
+       /*
+        * V2 SYMLINK requests don't return any attributes.  Setting the
+        * filehandle size to zero indicates to nfs_instantiate that it
+        * should fill in the data with a LOOKUP call on the wire.
+        */
+       if (status == 0) {
+               nfs_fattr_init(&fattr);
+               fhandle.size = 0;
+               status = nfs_instantiate(dentry, &fhandle, &fattr);
+       }
+
        dprintk("NFS reply symlink: %d\n", status);
        return status;
 }