nfs: make recovery state manager operations privileged
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
parent
689cf5c15b
commit
b257957e50
1 changed files with 97 additions and 18 deletions
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@ -64,6 +64,7 @@
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struct nfs4_opendata;
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struct nfs4_opendata;
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static int _nfs4_proc_open(struct nfs4_opendata *data);
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static int _nfs4_proc_open(struct nfs4_opendata *data);
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static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
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static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
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static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
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static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
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static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
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static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
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static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
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@ -567,6 +568,12 @@ static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
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rpc_call_start(task);
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rpc_call_start(task);
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}
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}
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static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
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{
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rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
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nfs41_call_sync_prepare(task, calldata);
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}
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static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
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static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
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{
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{
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struct nfs41_call_sync_data *data = calldata;
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struct nfs41_call_sync_data *data = calldata;
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@ -579,12 +586,18 @@ struct rpc_call_ops nfs41_call_sync_ops = {
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.rpc_call_done = nfs41_call_sync_done,
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.rpc_call_done = nfs41_call_sync_done,
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};
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};
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struct rpc_call_ops nfs41_call_priv_sync_ops = {
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.rpc_call_prepare = nfs41_call_priv_sync_prepare,
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.rpc_call_done = nfs41_call_sync_done,
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};
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static int nfs4_call_sync_sequence(struct nfs_client *clp,
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static int nfs4_call_sync_sequence(struct nfs_client *clp,
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struct rpc_clnt *clnt,
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struct rpc_clnt *clnt,
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struct rpc_message *msg,
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struct rpc_message *msg,
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struct nfs4_sequence_args *args,
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struct nfs4_sequence_args *args,
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struct nfs4_sequence_res *res,
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struct nfs4_sequence_res *res,
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int cache_reply)
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int cache_reply,
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int privileged)
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{
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{
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int ret;
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int ret;
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struct rpc_task *task;
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struct rpc_task *task;
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@ -602,6 +615,8 @@ static int nfs4_call_sync_sequence(struct nfs_client *clp,
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};
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};
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res->sr_slotid = NFS4_MAX_SLOT_TABLE;
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res->sr_slotid = NFS4_MAX_SLOT_TABLE;
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if (privileged)
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task_setup.callback_ops = &nfs41_call_priv_sync_ops;
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task = rpc_run_task(&task_setup);
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task = rpc_run_task(&task_setup);
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if (IS_ERR(task))
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if (IS_ERR(task))
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ret = PTR_ERR(task);
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ret = PTR_ERR(task);
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@ -619,7 +634,7 @@ int _nfs4_call_sync_session(struct nfs_server *server,
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int cache_reply)
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int cache_reply)
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{
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{
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return nfs4_call_sync_sequence(server->nfs_client, server->client,
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return nfs4_call_sync_sequence(server->nfs_client, server->client,
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msg, args, res, cache_reply);
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msg, args, res, cache_reply, 0);
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}
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}
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#endif /* CONFIG_NFS_V4_1 */
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#endif /* CONFIG_NFS_V4_1 */
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@ -1057,7 +1072,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmod
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memset(&opendata->o_res, 0, sizeof(opendata->o_res));
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memset(&opendata->o_res, 0, sizeof(opendata->o_res));
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memset(&opendata->c_res, 0, sizeof(opendata->c_res));
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memset(&opendata->c_res, 0, sizeof(opendata->c_res));
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nfs4_init_opendata_res(opendata);
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nfs4_init_opendata_res(opendata);
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ret = _nfs4_proc_open(opendata);
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ret = _nfs4_recover_proc_open(opendata);
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if (ret != 0)
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if (ret != 0)
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return ret;
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return ret;
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newstate = nfs4_opendata_to_nfs4_state(opendata);
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newstate = nfs4_opendata_to_nfs4_state(opendata);
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@ -1348,6 +1363,12 @@ out_no_action:
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}
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}
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static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
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{
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rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
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nfs4_open_prepare(task, calldata);
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}
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static void nfs4_open_done(struct rpc_task *task, void *calldata)
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static void nfs4_open_done(struct rpc_task *task, void *calldata)
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{
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{
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struct nfs4_opendata *data = calldata;
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struct nfs4_opendata *data = calldata;
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@ -1406,10 +1427,13 @@ static const struct rpc_call_ops nfs4_open_ops = {
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.rpc_release = nfs4_open_release,
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.rpc_release = nfs4_open_release,
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};
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};
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/*
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static const struct rpc_call_ops nfs4_recover_open_ops = {
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* Note: On error, nfs4_proc_open will free the struct nfs4_opendata
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.rpc_call_prepare = nfs4_recover_open_prepare,
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*/
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.rpc_call_done = nfs4_open_done,
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static int _nfs4_proc_open(struct nfs4_opendata *data)
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.rpc_release = nfs4_open_release,
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};
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static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
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{
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{
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struct inode *dir = data->dir->d_inode;
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struct inode *dir = data->dir->d_inode;
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struct nfs_server *server = NFS_SERVER(dir);
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struct nfs_server *server = NFS_SERVER(dir);
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@ -1436,16 +1460,55 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
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data->rpc_done = 0;
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data->rpc_done = 0;
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data->rpc_status = 0;
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data->rpc_status = 0;
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data->cancelled = 0;
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data->cancelled = 0;
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if (isrecover)
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task_setup_data.callback_ops = &nfs4_recover_open_ops;
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task = rpc_run_task(&task_setup_data);
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task = rpc_run_task(&task_setup_data);
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if (IS_ERR(task))
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if (IS_ERR(task))
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return PTR_ERR(task);
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return PTR_ERR(task);
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status = nfs4_wait_for_completion_rpc_task(task);
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status = nfs4_wait_for_completion_rpc_task(task);
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if (status != 0) {
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if (status != 0) {
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data->cancelled = 1;
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data->cancelled = 1;
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smp_wmb();
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smp_wmb();
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} else
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} else
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status = data->rpc_status;
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status = data->rpc_status;
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rpc_put_task(task);
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rpc_put_task(task);
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return status;
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}
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static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
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{
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struct inode *dir = data->dir->d_inode;
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struct nfs_openres *o_res = &data->o_res;
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int status;
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status = nfs4_run_open_task(data, 1);
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if (status != 0 || !data->rpc_done)
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return status;
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nfs_refresh_inode(dir, o_res->dir_attr);
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if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
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status = _nfs4_proc_open_confirm(data);
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if (status != 0)
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return status;
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}
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return status;
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}
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/*
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* Note: On error, nfs4_proc_open will free the struct nfs4_opendata
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*/
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static int _nfs4_proc_open(struct nfs4_opendata *data)
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{
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struct inode *dir = data->dir->d_inode;
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struct nfs_server *server = NFS_SERVER(dir);
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struct nfs_openargs *o_arg = &data->o_arg;
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struct nfs_openres *o_res = &data->o_res;
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int status;
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status = nfs4_run_open_task(data, 0);
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if (status != 0 || !data->rpc_done)
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if (status != 0 || !data->rpc_done)
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return status;
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return status;
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@ -3960,6 +4023,12 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
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dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
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dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
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}
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}
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static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
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{
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rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
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nfs4_lock_prepare(task, calldata);
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}
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static void nfs4_lock_done(struct rpc_task *task, void *calldata)
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static void nfs4_lock_done(struct rpc_task *task, void *calldata)
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{
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{
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struct nfs4_lockdata *data = calldata;
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struct nfs4_lockdata *data = calldata;
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@ -4015,6 +4084,12 @@ static const struct rpc_call_ops nfs4_lock_ops = {
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.rpc_release = nfs4_lock_release,
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.rpc_release = nfs4_lock_release,
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};
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};
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static const struct rpc_call_ops nfs4_recover_lock_ops = {
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.rpc_call_prepare = nfs4_recover_lock_prepare,
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.rpc_call_done = nfs4_lock_done,
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.rpc_release = nfs4_lock_release,
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};
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static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
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static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
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{
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{
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struct nfs4_lockdata *data;
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struct nfs4_lockdata *data;
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@ -4039,8 +4114,11 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
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return -ENOMEM;
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return -ENOMEM;
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if (IS_SETLKW(cmd))
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if (IS_SETLKW(cmd))
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data->arg.block = 1;
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data->arg.block = 1;
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if (recovery_type == NFS_LOCK_RECLAIM)
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if (recovery_type > NFS_LOCK_NEW) {
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if (recovery_type == NFS_LOCK_RECLAIM)
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data->arg.reclaim = NFS_LOCK_RECLAIM;
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data->arg.reclaim = NFS_LOCK_RECLAIM;
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task_setup_data.callback_ops = &nfs4_recover_lock_ops;
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}
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msg.rpc_argp = &data->arg,
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msg.rpc_argp = &data->arg,
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msg.rpc_resp = &data->res,
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msg.rpc_resp = &data->res,
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task_setup_data.callback_data = data;
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task_setup_data.callback_data = data;
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@ -4891,7 +4969,7 @@ static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
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args.sa_cache_this = 0;
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args.sa_cache_this = 0;
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return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args,
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return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args,
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&res, 0);
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&res, args.sa_cache_this, 1);
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}
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}
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void nfs41_sequence_call_done(struct rpc_task *task, void *data)
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void nfs41_sequence_call_done(struct rpc_task *task, void *data)
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@ -4973,6 +5051,7 @@ static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
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{
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{
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struct nfs4_reclaim_complete_data *calldata = data;
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struct nfs4_reclaim_complete_data *calldata = data;
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rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
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if (nfs4_setup_sequence(calldata->clp, &calldata->arg.seq_args,
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if (nfs4_setup_sequence(calldata->clp, &calldata->arg.seq_args,
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&calldata->res.seq_res, 0, task))
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&calldata->res.seq_res, 0, task))
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return;
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return;
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