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[PATCH] RPC: [PATCH] improve rpcauthauth_create error returns

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Currently we return -ENOMEM for every single failure to create a new auth.
 This is actually accurate for auth_null and auth_unix, but for auth_gss it's a
 bit confusing.

 Allow rpcauth_create (and the ->create methods) to return errors.  With this
 patch, the user may sometimes see an EINVAL instead.  Whee.

 Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
J. Bruce Fields
2005-06-22 17:16:23 +00:00
committed by Trond Myklebust
parent 438b6fdebf
commit 6a19275ada
5 changed files with 35 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
fs/nfs/inode.c
View File

@ -160,11 +160,10 @@ nfs_clear_inode(struct inode *inode)
void
nfs_umount_begin(struct super_block *sb)
{
struct nfs_server *server = NFS_SB(sb);
struct rpc_clnt *rpc;
struct rpc_clnt *rpc = NFS_SB(sb)->client;
/* -EIO all pending I/O */
if ((rpc = server->client) != NULL)
if (!IS_ERR(rpc))
rpc_killall_tasks(rpc);
}
@ -450,11 +449,14 @@ nfs_fill_super(struct super_block *sb, struct nfs_mount_data *data, int silent)
return PTR_ERR(server->client);
/* RFC 2623, sec 2.3.2 */
if (authflavor != RPC_AUTH_UNIX) {
struct rpc_auth *auth;
server->client_sys = rpc_clone_client(server->client);
if (IS_ERR(server->client_sys))
return PTR_ERR(server->client_sys);
if (!rpcauth_create(RPC_AUTH_UNIX, server->client_sys))
return -ENOMEM;
auth = rpcauth_create(RPC_AUTH_UNIX, server->client_sys);
if (IS_ERR(auth))
return PTR_ERR(auth);
} else {
atomic_inc(&server->client->cl_count);
server->client_sys = server->client;
@ -1450,6 +1452,7 @@ static struct super_block *nfs_get_sb(struct file_system_type *fs_type,
memset(server, 0, sizeof(struct nfs_server));
/* Zero out the NFS state stuff */
init_nfsv4_state(server);
server->client = server->client_sys = ERR_PTR(-EINVAL);
root = &server->fh;
if (data->flags & NFS_MOUNT_VER3)
@ -1506,9 +1509,9 @@ static void nfs_kill_super(struct super_block *s)
kill_anon_super(s);
if (server->client != NULL && !IS_ERR(server->client))
if (!IS_ERR(server->client))
rpc_shutdown_client(server->client);
if (server->client_sys != NULL && !IS_ERR(server->client_sys))
if (!IS_ERR(server->client_sys))
rpc_shutdown_client(server->client_sys);
if (!(server->flags & NFS_MOUNT_NONLM))
@ -1650,7 +1653,7 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data,
}
down_write(&clp->cl_sem);
if (clp->cl_rpcclient == NULL) {
if (IS_ERR(clp->cl_rpcclient)) {
xprt = xprt_create_proto(proto, &server->addr, &timeparms);
if (IS_ERR(xprt)) {
up_write(&clp->cl_sem);
@ -1711,9 +1714,12 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data,
}
if (clnt->cl_auth->au_flavor != authflavour) {
if (rpcauth_create(authflavour, clnt) == NULL) {
struct rpc_auth *auth;
auth = rpcauth_create(authflavour, clnt);
if (IS_ERR(auth)) {
dprintk("%s: couldn't create credcache!\n", __FUNCTION__);
return -ENOMEM;
return PTR_ERR(auth);
}
}
@ -1788,6 +1794,7 @@ static struct super_block *nfs4_get_sb(struct file_system_type *fs_type,
memset(server, 0, sizeof(struct nfs_server));
/* Zero out the NFS state stuff */
init_nfsv4_state(server);
server->client = server->client_sys = ERR_PTR(-EINVAL);
p = nfs_copy_user_string(NULL, &data->hostname, 256);
if (IS_ERR(p))

3
fs/nfs/nfs4state.c
View File

@ -110,6 +110,7 @@ nfs4_alloc_client(struct in_addr *addr)
INIT_LIST_HEAD(&clp->cl_superblocks);
init_waitqueue_head(&clp->cl_waitq);
rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS4 client");
clp->cl_rpcclient = ERR_PTR(-EINVAL);
clp->cl_boot_time = CURRENT_TIME;
clp->cl_state = 1 << NFS4CLNT_OK;
return clp;
@ -131,7 +132,7 @@ nfs4_free_client(struct nfs4_client *clp)
if (clp->cl_cred)
put_rpccred(clp->cl_cred);
nfs_idmap_delete(clp);
if (clp->cl_rpcclient)
if (!IS_ERR(clp->cl_rpcclient))
rpc_shutdown_client(clp->cl_rpcclient);
kfree(clp);
nfs_callback_down();