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SUNRPC: Ensure that rpc_mkpipe returns a refcounted dentry

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If not, we cannot guarantee that idmap->idmap_dentry, gss_auth->dentry and
clnt->cl_dentry are valid dentries.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2006-03-20 13:44:09 -05:00
parent 24c5d9d7ea
commit 12de3b35ea
4 changed files with 9 additions and 2 deletions
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2
fs/nfs/idmap.c
View File

@ -132,6 +132,8 @@ nfs_idmap_delete(struct nfs4_client *clp)
if (!idmap)
return;
dput(idmap->idmap_dentry);
idmap->idmap_dentry = NULL;
rpc_unlink(idmap->idmap_path);
clp->cl_idmap = NULL;
kfree(idmap);

2
net/sunrpc/auth_gss/auth_gss.c
View File

@ -721,6 +721,8 @@ gss_destroy(struct rpc_auth *auth)
gss_auth = container_of(auth, struct gss_auth, rpc_auth);
rpc_unlink(gss_auth->path);
dput(gss_auth->dentry);
gss_auth->dentry = NULL;
gss_mech_put(gss_auth->mech);
rpcauth_free_credcache(auth);

3
net/sunrpc/clnt.c
View File

@ -240,6 +240,7 @@ rpc_clone_client(struct rpc_clnt *clnt)
new->cl_autobind = 0;
new->cl_oneshot = 0;
new->cl_dead = 0;
dget(new->cl_dentry);
rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
if (new->cl_auth)
atomic_inc(&new->cl_auth->au_count);
@ -314,6 +315,8 @@ rpc_destroy_client(struct rpc_clnt *clnt)
if (clnt->cl_server != clnt->cl_inline_name)
kfree(clnt->cl_server);
out_free:
if (clnt->cl_dentry)
dput(clnt->cl_dentry);
kfree(clnt);
return 0;
}

4
net/sunrpc/rpc_pipe.c
View File

@ -669,7 +669,7 @@ rpc_mkdir(char *path, struct rpc_clnt *rpc_client)
out:
mutex_unlock(&dir->i_mutex);
rpc_release_path(&nd);
return dentry;
return dget(dentry);
err_depopulate:
rpc_depopulate(dentry);
__rpc_rmdir(dir, dentry);
@ -733,7 +733,7 @@ rpc_mkpipe(char *path, void *private, struct rpc_pipe_ops *ops, int flags)
out:
mutex_unlock(&dir->i_mutex);
rpc_release_path(&nd);
return dentry;
return dget(dentry);
err_dput:
dput(dentry);
dentry = ERR_PTR(-ENOMEM);