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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:
Alexandros Batsakis 2009-12-14 21:27:57 -08:00 committed by Trond Myklebust
parent 689cf5c15b
commit b257957e50
1 changed files with 97 additions and 18 deletions
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115
fs/nfs/nfs4proc.c
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@ -64,6 +64,7 @@
struct nfs4_opendata;
static int _nfs4_proc_open(struct nfs4_opendata *data);
static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
@ -567,6 +568,12 @@ static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
rpc_call_start(task);
}
static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
{
rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
nfs41_call_sync_prepare(task, calldata);
}
static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
{
struct nfs41_call_sync_data *data = calldata;
@ -579,12 +586,18 @@ struct rpc_call_ops nfs41_call_sync_ops = {
.rpc_call_done = nfs41_call_sync_done,
};
struct rpc_call_ops nfs41_call_priv_sync_ops = {
.rpc_call_prepare = nfs41_call_priv_sync_prepare,
.rpc_call_done = nfs41_call_sync_done,
};
static int nfs4_call_sync_sequence(struct nfs_client *clp,
struct rpc_clnt *clnt,
struct rpc_message *msg,
struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res,
int cache_reply)
int cache_reply,
int privileged)
{
int ret;
struct rpc_task *task;
@ -602,6 +615,8 @@ static int nfs4_call_sync_sequence(struct nfs_client *clp,
};
res->sr_slotid = NFS4_MAX_SLOT_TABLE;
if (privileged)
task_setup.callback_ops = &nfs41_call_priv_sync_ops;
task = rpc_run_task(&task_setup);
if (IS_ERR(task))
ret = PTR_ERR(task);
@ -619,7 +634,7 @@ int _nfs4_call_sync_session(struct nfs_server *server,
int cache_reply)
{
return nfs4_call_sync_sequence(server->nfs_client, server->client,
msg, args, res, cache_reply);
msg, args, res, cache_reply, 0);
}
#endif /* CONFIG_NFS_V4_1 */
@ -1057,7 +1072,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmod
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
ret = _nfs4_proc_open(opendata);
ret = _nfs4_recover_proc_open(opendata);
if (ret != 0)
return ret;
newstate = nfs4_opendata_to_nfs4_state(opendata);
@ -1348,6 +1363,12 @@ out_no_action:
}
static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
{
rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
nfs4_open_prepare(task, calldata);
}
static void nfs4_open_done(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
@ -1406,10 +1427,13 @@ static const struct rpc_call_ops nfs4_open_ops = {
.rpc_release = nfs4_open_release,
};
/*
* Note: On error, nfs4_proc_open will free the struct nfs4_opendata
*/
static int _nfs4_proc_open(struct nfs4_opendata *data)
static const struct rpc_call_ops nfs4_recover_open_ops = {
.rpc_call_prepare = nfs4_recover_open_prepare,
.rpc_call_done = nfs4_open_done,
.rpc_release = nfs4_open_release,
};
static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
{
struct inode *dir = data->dir->d_inode;
struct nfs_server *server = NFS_SERVER(dir);
@ -1436,16 +1460,55 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
data->rpc_done = 0;
data->rpc_status = 0;
data->cancelled = 0;
if (isrecover)
task_setup_data.callback_ops = &nfs4_recover_open_ops;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0) {
data->cancelled = 1;
smp_wmb();
} else
status = data->rpc_status;
rpc_put_task(task);
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0) {
data->cancelled = 1;
smp_wmb();
} else
status = data->rpc_status;
rpc_put_task(task);
return status;
}
static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
{
struct inode *dir = data->dir->d_inode;
struct nfs_openres *o_res = &data->o_res;
int status;
status = nfs4_run_open_task(data, 1);
if (status != 0 || !data->rpc_done)
return status;
nfs_refresh_inode(dir, o_res->dir_attr);
if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
status = _nfs4_proc_open_confirm(data);
if (status != 0)
return status;
}
return status;
}
/*
* Note: On error, nfs4_proc_open will free the struct nfs4_opendata
*/
static int _nfs4_proc_open(struct nfs4_opendata *data)
{
struct inode *dir = data->dir->d_inode;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_openargs *o_arg = &data->o_arg;
struct nfs_openres *o_res = &data->o_res;
int status;
status = nfs4_run_open_task(data, 0);
if (status != 0 || !data->rpc_done)
return status;
@ -3960,6 +4023,12 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
}
static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
{
rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
nfs4_lock_prepare(task, calldata);
}
static void nfs4_lock_done(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
@ -4015,6 +4084,12 @@ static const struct rpc_call_ops nfs4_lock_ops = {
.rpc_release = nfs4_lock_release,
};
static const struct rpc_call_ops nfs4_recover_lock_ops = {
.rpc_call_prepare = nfs4_recover_lock_prepare,
.rpc_call_done = nfs4_lock_done,
.rpc_release = nfs4_lock_release,
};
static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
{
struct nfs4_lockdata *data;
@ -4039,8 +4114,11 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
return -ENOMEM;
if (IS_SETLKW(cmd))
data->arg.block = 1;
if (recovery_type == NFS_LOCK_RECLAIM)
if (recovery_type > NFS_LOCK_NEW) {
if (recovery_type == NFS_LOCK_RECLAIM)
data->arg.reclaim = NFS_LOCK_RECLAIM;
task_setup_data.callback_ops = &nfs4_recover_lock_ops;
}
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
@ -4891,7 +4969,7 @@ static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
args.sa_cache_this = 0;
return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args,
&res, 0);
&res, args.sa_cache_this, 1);
}
void nfs41_sequence_call_done(struct rpc_task *task, void *data)
@ -4973,6 +5051,7 @@ static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
{
struct nfs4_reclaim_complete_data *calldata = data;
rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
if (nfs4_setup_sequence(calldata->clp, &calldata->arg.seq_args,
&calldata->res.seq_res, 0, task))
return;