#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/string.h>
+#include <linux/slab.h>
#include <linux/sunrpc/clnt.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
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);
static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
+ struct nfs_fattr *fattr, struct iattr *sattr,
+ struct nfs4_state *state);
/* Prevent leaks of NFSv4 errors into userland */
static int nfs4_map_errors(int err)
if (state == NULL)
break;
nfs4_state_mark_reclaim_nograce(clp, state);
- case -NFS4ERR_STALE_CLIENTID:
+ goto do_state_recovery;
case -NFS4ERR_STALE_STATEID:
- case -NFS4ERR_EXPIRED:
- nfs4_schedule_state_recovery(clp);
- ret = nfs4_wait_clnt_recover(clp);
- if (ret == 0)
- exception->retry = 1;
-#if !defined(CONFIG_NFS_V4_1)
- break;
-#else /* !defined(CONFIG_NFS_V4_1) */
- if (!nfs4_has_session(server->nfs_client))
+ if (state == NULL)
break;
- /* FALLTHROUGH */
+ nfs4_state_mark_reclaim_reboot(clp, state);
+ case -NFS4ERR_STALE_CLIENTID:
+ case -NFS4ERR_EXPIRED:
+ goto do_state_recovery;
+#if defined(CONFIG_NFS_V4_1)
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
nfs4_schedule_state_recovery(clp);
exception->retry = 1;
break;
-#endif /* !defined(CONFIG_NFS_V4_1) */
+#endif /* defined(CONFIG_NFS_V4_1) */
case -NFS4ERR_FILE_OPEN:
if (exception->timeout > HZ) {
/* We have retried a decent amount, time to
}
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
ret = nfs4_delay(server->client, &exception->timeout);
if (ret != 0)
break;
}
/* We failed to handle the error */
return nfs4_map_errors(ret);
+do_state_recovery:
+ nfs4_schedule_state_recovery(clp);
+ ret = nfs4_wait_clnt_recover(clp);
+ if (ret == 0)
+ exception->retry = 1;
+ return ret;
}
free_slotid, tbl->highest_used_slotid);
}
+/*
+ * Signal state manager thread if session is drained
+ */
+static void nfs41_check_drain_session_complete(struct nfs4_session *ses)
+{
+ struct rpc_task *task;
+
+ if (!test_bit(NFS4CLNT_SESSION_DRAINING, &ses->clp->cl_state)) {
+ task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq);
+ if (task)
+ rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
+ return;
+ }
+
+ if (ses->fc_slot_table.highest_used_slotid != -1)
+ return;
+
+ dprintk("%s COMPLETE: Session Drained\n", __func__);
+ complete(&ses->complete);
+}
+
static void nfs41_sequence_free_slot(const struct nfs_client *clp,
struct nfs4_sequence_res *res)
{
spin_lock(&tbl->slot_tbl_lock);
nfs4_free_slot(tbl, res->sr_slotid);
-
- /* Signal state manager thread if session is drained */
- if (test_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state)) {
- if (tbl->highest_used_slotid == -1) {
- dprintk("%s COMPLETE: Session Drained\n", __func__);
- complete(&clp->cl_session->complete);
- }
- } else
- rpc_wake_up_next(&tbl->slot_tbl_waitq);
+ nfs41_check_drain_session_complete(clp->cl_session);
spin_unlock(&tbl->slot_tbl_lock);
res->sr_slotid = NFS4_MAX_SLOT_TABLE;
}
clp->cl_last_renewal = timestamp;
spin_unlock(&clp->cl_lock);
/* Check sequence flags */
- nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
+ if (atomic_read(&clp->cl_count) > 1)
+ nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
}
out:
/* The session may be reset by one of the error handlers. */
* Note: must be called with under the slot_tbl_lock.
*/
static u8
-nfs4_find_slot(struct nfs4_slot_table *tbl, struct rpc_task *task)
+nfs4_find_slot(struct nfs4_slot_table *tbl)
{
int slotid;
u8 ret_id = NFS4_MAX_SLOT_TABLE;
tbl = &session->fc_slot_table;
spin_lock(&tbl->slot_tbl_lock);
- if (test_bit(NFS4CLNT_SESSION_DRAINING, &session->clp->cl_state)) {
+ if (test_bit(NFS4CLNT_SESSION_DRAINING, &session->clp->cl_state) &&
+ !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
/*
* The state manager will wait until the slot table is empty.
* Schedule the reset thread
return -EAGAIN;
}
- slotid = nfs4_find_slot(tbl, task);
+ if (!rpc_queue_empty(&tbl->slot_tbl_waitq) &&
+ !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
+ rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
+ spin_unlock(&tbl->slot_tbl_lock);
+ dprintk("%s enforce FIFO order\n", __func__);
+ return -EAGAIN;
+ }
+
+ slotid = nfs4_find_slot(tbl);
if (slotid == NFS4_MAX_SLOT_TABLE) {
rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
spin_unlock(&tbl->slot_tbl_lock);
}
spin_unlock(&tbl->slot_tbl_lock);
+ rpc_task_set_priority(task, RPC_PRIORITY_NORMAL);
slot = tbl->slots + slotid;
args->sa_session = session;
args->sa_slotid = slotid;
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;
.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;
};
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);
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 */
p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
if (p->o_arg.seqid == NULL)
goto err_free;
- p->path.mnt = mntget(path->mnt);
- p->path.dentry = dget(path->dentry);
+ path_get(path);
+ p->path = *path;
p->dir = parent;
p->owner = sp;
atomic_inc(&sp->so_count);
goto out;
switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
- ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
+ ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
+ && state->n_rdonly != 0;
break;
case FMODE_WRITE:
- ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0;
+ ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
+ && state->n_wronly != 0;
break;
case FMODE_READ|FMODE_WRITE:
- ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
+ ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
+ && state->n_rdwr != 0;
}
out:
return ret;
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);
int err;
do {
err = _nfs4_do_open_reclaim(ctx, state);
- if (err != -NFS4ERR_DELAY)
+ if (err != -NFS4ERR_DELAY && err != -EKEYEXPIRED)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
}
+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;
.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);
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;
- if (o_res->fh.size == 0)
- _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr);
+ 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;
if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
nfs_post_op_update_inode(dir, o_res->dir_attr);
} else
nfs_refresh_inode(dir, o_res->dir_attr);
+ if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
+ server->caps &= ~NFS_CAP_POSIX_LOCK;
if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
status = _nfs4_proc_open_confirm(data);
if (status != 0)
goto out;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
nfs4_handle_exception(server, err, &exception);
err = 0;
}
if (status != 0)
goto err_opendata_put;
- if (opendata->o_arg.open_flags & O_EXCL)
- nfs4_exclusive_attrset(opendata, sattr);
-
state = nfs4_opendata_to_nfs4_state(opendata);
status = PTR_ERR(state);
if (IS_ERR(state))
goto err_opendata_put;
+ if (server->caps & NFS_CAP_POSIX_LOCK)
+ set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
+
+ if (opendata->o_arg.open_flags & O_EXCL) {
+ nfs4_exclusive_attrset(opendata, sattr);
+
+ nfs_fattr_init(opendata->o_res.f_attr);
+ status = nfs4_do_setattr(state->inode, cred,
+ opendata->o_res.f_attr, sattr,
+ state);
+ if (status == 0)
+ nfs_setattr_update_inode(state->inode, sattr);
+ nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+ }
nfs4_opendata_put(opendata);
nfs4_put_state_owner(sp);
*res = state;
kfree(calldata);
}
+static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
+ fmode_t fmode)
+{
+ spin_lock(&state->owner->so_lock);
+ if (!(fmode & FMODE_READ))
+ clear_bit(NFS_O_RDONLY_STATE, &state->flags);
+ if (!(fmode & FMODE_WRITE))
+ clear_bit(NFS_O_WRONLY_STATE, &state->flags);
+ clear_bit(NFS_O_RDWR_STATE, &state->flags);
+ spin_unlock(&state->owner->so_lock);
+}
+
static void nfs4_close_done(struct rpc_task *task, void *data)
{
struct nfs4_closedata *calldata = data;
case 0:
nfs_set_open_stateid(state, &calldata->res.stateid, 0);
renew_lease(server, calldata->timestamp);
+ nfs4_close_clear_stateid_flags(state,
+ calldata->arg.fmode);
break;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_OLD_STATEID:
if (calldata->arg.fmode == 0)
break;
default:
- if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
- nfs_restart_rpc(task, server->nfs_client);
- return;
- }
+ if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
+ rpc_restart_call_prepare(task);
}
+ nfs_release_seqid(calldata->arg.seqid);
nfs_refresh_inode(calldata->inode, calldata->res.fattr);
}
{
struct nfs4_closedata *calldata = data;
struct nfs4_state *state = calldata->state;
- int clear_rd, clear_wr, clear_rdwr;
+ int call_close = 0;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
return;
- clear_rd = clear_wr = clear_rdwr = 0;
+ task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
+ calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
spin_lock(&state->owner->so_lock);
/* Calculate the change in open mode */
if (state->n_rdwr == 0) {
if (state->n_rdonly == 0) {
- clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags);
- clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags);
+ call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
+ call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
+ calldata->arg.fmode &= ~FMODE_READ;
}
if (state->n_wronly == 0) {
- clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags);
- clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags);
+ call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
+ call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
+ calldata->arg.fmode &= ~FMODE_WRITE;
}
}
spin_unlock(&state->owner->so_lock);
- if (!clear_rd && !clear_wr && !clear_rdwr) {
+
+ if (!call_close) {
/* Note: exit _without_ calling nfs4_close_done */
task->tk_action = NULL;
return;
}
+
+ if (calldata->arg.fmode == 0)
+ task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
+
nfs_fattr_init(calldata->res.fattr);
- if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
- task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.fmode = FMODE_READ;
- } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
- task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.fmode = FMODE_WRITE;
- }
calldata->timestamp = jiffies;
if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client,
&calldata->arg.seq_args, &calldata->res.seq_res,
calldata->state = state;
calldata->arg.fh = NFS_FH(state->inode);
calldata->arg.stateid = &state->open_stateid;
- if (nfs4_has_session(server->nfs_client))
- memset(calldata->arg.stateid->data, 0, 4); /* clear seqid */
/* Serialization for the sequence id */
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
- calldata->path.mnt = mntget(path->mnt);
- calldata->path.dentry = dget(path->dentry);
+ path_get(path);
+ calldata->path = *path;
msg.rpc_argp = &calldata->arg,
msg.rpc_resp = &calldata->res,
case -EDQUOT:
case -ENOSPC:
case -EROFS:
- lookup_instantiate_filp(nd, (struct dentry *)state, NULL);
- return 1;
+ return PTR_ERR(state);
default:
goto out_drop;
}
static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs_server *server = NFS_SERVER(inode);
- struct nfs_fattr fattr;
struct nfs4_accessargs args = {
.fh = NFS_FH(inode),
.bitmask = server->attr_bitmask,
};
struct nfs4_accessres res = {
.server = server,
- .fattr = &fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
if (mode & MAY_EXEC)
args.access |= NFS4_ACCESS_EXECUTE;
}
- nfs_fattr_init(&fattr);
+
+ res.fattr = nfs_alloc_fattr();
+ if (res.fattr == NULL)
+ return -ENOMEM;
+
status = nfs4_call_sync(server, &msg, &args, &res, 0);
if (!status) {
entry->mask = 0;
entry->mask |= MAY_WRITE;
if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
- nfs_refresh_inode(inode, &fattr);
+ nfs_refresh_inode(inode, res.fattr);
}
+ nfs_free_fattr(res.fattr);
return status;
}
}
d_add(dentry, igrab(state->inode));
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- if (flags & O_EXCL) {
- struct nfs_fattr fattr;
- status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state);
- if (status == 0)
- nfs_setattr_update_inode(state->inode, sattr);
- nfs_post_op_update_inode(state->inode, &fattr);
- }
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
status = nfs4_intent_set_file(nd, &path, state, fmode);
else
.rpc_argp = &args,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
+
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.dir_attr == NULL)
+ goto out;
- nfs_fattr_init(&res.dir_attr);
status = nfs4_call_sync(server, &msg, &args, &res, 1);
if (status == 0) {
update_changeattr(dir, &res.cinfo);
- nfs_post_op_update_inode(dir, &res.dir_attr);
+ nfs_post_op_update_inode(dir, res.dir_attr);
}
+ nfs_free_fattr(res.dir_attr);
+out:
return status;
}
if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
return 0;
update_changeattr(dir, &res->cinfo);
- nfs_post_op_update_inode(dir, &res->dir_attr);
+ nfs_post_op_update_inode(dir, res->dir_attr);
return 1;
}
.new_name = new_name,
.bitmask = server->attr_bitmask,
};
- struct nfs_fattr old_fattr, new_fattr;
struct nfs4_rename_res res = {
.server = server,
- .old_fattr = &old_fattr,
- .new_fattr = &new_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
- nfs_fattr_init(res.old_fattr);
- nfs_fattr_init(res.new_fattr);
- status = nfs4_call_sync(server, &msg, &arg, &res, 1);
+ res.old_fattr = nfs_alloc_fattr();
+ res.new_fattr = nfs_alloc_fattr();
+ if (res.old_fattr == NULL || res.new_fattr == NULL)
+ goto out;
+ status = nfs4_call_sync(server, &msg, &arg, &res, 1);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
nfs_post_op_update_inode(old_dir, res.old_fattr);
update_changeattr(new_dir, &res.new_cinfo);
nfs_post_op_update_inode(new_dir, res.new_fattr);
}
+out:
+ nfs_free_fattr(res.new_fattr);
+ nfs_free_fattr(res.old_fattr);
return status;
}
.name = name,
.bitmask = server->attr_bitmask,
};
- struct nfs_fattr fattr, dir_attr;
struct nfs4_link_res res = {
.server = server,
- .fattr = &fattr,
- .dir_attr = &dir_attr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
+
+ res.fattr = nfs_alloc_fattr();
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.fattr == NULL || res.dir_attr == NULL)
+ goto out;
- nfs_fattr_init(res.fattr);
- nfs_fattr_init(res.dir_attr);
status = nfs4_call_sync(server, &msg, &arg, &res, 1);
if (!status) {
update_changeattr(dir, &res.cinfo);
nfs_post_op_update_inode(dir, res.dir_attr);
nfs_post_op_update_inode(inode, res.fattr);
}
-
+out:
+ nfs_free_fattr(res.dir_attr);
+ nfs_free_fattr(res.fattr);
return status;
}
* nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
* standalone procedure for queueing an asynchronous RENEW.
*/
+static void nfs4_renew_release(void *data)
+{
+ struct nfs_client *clp = data;
+
+ if (atomic_read(&clp->cl_count) > 1)
+ nfs4_schedule_state_renewal(clp);
+ nfs_put_client(clp);
+}
+
static void nfs4_renew_done(struct rpc_task *task, void *data)
{
- struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp;
- unsigned long timestamp = (unsigned long)data;
+ struct nfs_client *clp = data;
+ unsigned long timestamp = task->tk_start;
if (task->tk_status < 0) {
/* Unless we're shutting down, schedule state recovery! */
static const struct rpc_call_ops nfs4_renew_ops = {
.rpc_call_done = nfs4_renew_done,
+ .rpc_release = nfs4_renew_release,
};
int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
.rpc_cred = cred,
};
+ if (!atomic_inc_not_zero(&clp->cl_count))
+ return -EIO;
return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
- &nfs4_renew_ops, (void *)jiffies);
+ &nfs4_renew_ops, clp);
}
int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
if (state == NULL)
break;
nfs4_state_mark_reclaim_nograce(clp, state);
- case -NFS4ERR_STALE_CLIENTID:
+ goto do_state_recovery;
case -NFS4ERR_STALE_STATEID:
+ if (state == NULL)
+ break;
+ nfs4_state_mark_reclaim_reboot(clp, state);
+ case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_EXPIRED:
- rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
- nfs4_schedule_state_recovery(clp);
- if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
- rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
- task->tk_status = 0;
- return -EAGAIN;
+ goto do_state_recovery;
#if defined(CONFIG_NFS_V4_1)
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
if (server)
nfs_inc_server_stats(server, NFSIOS_DELAY);
case -NFS4ERR_GRACE:
+ case -EKEYEXPIRED:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
task->tk_status = 0;
return -EAGAIN;
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
+do_state_recovery:
+ rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
+ nfs4_schedule_state_recovery(clp);
+ if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
+ rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
+ task->tk_status = 0;
+ return -EAGAIN;
}
static int
return _nfs4_async_handle_error(task, server, server->nfs_client, state);
}
-int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)
+int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
+ unsigned short port, struct rpc_cred *cred,
+ struct nfs4_setclientid_res *res)
{
nfs4_verifier sc_verifier;
struct nfs4_setclientid setclientid = {
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
.rpc_argp = &setclientid,
- .rpc_resp = clp,
+ .rpc_resp = res,
.rpc_cred = cred,
};
__be32 *p;
return status;
}
-static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
+static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp,
+ struct nfs4_setclientid_res *arg,
+ struct rpc_cred *cred)
{
struct nfs_fsinfo fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
- .rpc_argp = clp,
+ .rpc_argp = arg,
.rpc_resp = &fsinfo,
.rpc_cred = cred,
};
return status;
}
-int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
+int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
+ struct nfs4_setclientid_res *arg,
+ struct rpc_cred *cred)
{
long timeout = 0;
int err;
do {
- err = _nfs4_proc_setclientid_confirm(clp, cred);
+ err = _nfs4_proc_setclientid_confirm(clp, arg, cred);
switch (err) {
case 0:
return err;
case -NFS4ERR_RESOURCE:
/* The IBM lawyers misread another document! */
case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
err = nfs4_delay(clp->cl_rpcclient, &timeout);
}
} while (err == 0);
nfs4_sequence_done(data->res.server, &data->res.seq_res,
task->tk_status);
- data->rpc_status = task->tk_status;
- if (data->rpc_status == 0)
+ switch (task->tk_status) {
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_EXPIRED:
+ case 0:
renew_lease(data->res.server, data->timestamp);
+ break;
+ default:
+ if (nfs4_async_handle_error(task, data->res.server, NULL) ==
+ -EAGAIN) {
+ nfs_restart_rpc(task, data->res.server->nfs_client);
+ return;
+ }
+ }
+ data->rpc_status = task->tk_status;
}
static void nfs4_delegreturn_release(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;
.rpc_release = nfs4_lock_release,
};
-static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim)
+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 void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
+{
+ struct nfs_client *clp = server->nfs_client;
+ struct nfs4_state *state = lsp->ls_state;
+
+ switch (error) {
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_BAD_STATEID:
+ case -NFS4ERR_EXPIRED:
+ if (new_lock_owner != 0 ||
+ (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
+ nfs4_state_mark_reclaim_nograce(clp, state);
+ lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+ break;
+ case -NFS4ERR_STALE_STATEID:
+ if (new_lock_owner != 0 ||
+ (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
+ nfs4_state_mark_reclaim_reboot(clp, state);
+ lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+ };
+}
+
+static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
{
struct nfs4_lockdata *data;
struct rpc_task *task;
return -ENOMEM;
if (IS_SETLKW(cmd))
data->arg.block = 1;
- if (reclaim != 0)
- data->arg.reclaim = 1;
+ 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;
ret = nfs4_wait_for_completion_rpc_task(task);
if (ret == 0) {
ret = data->rpc_status;
+ if (ret)
+ nfs4_handle_setlk_error(data->server, data->lsp,
+ data->arg.new_lock_owner, ret);
} else
data->cancelled = 1;
rpc_put_task(task);
/* Cache the lock if possible... */
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
- err = _nfs4_do_setlk(state, F_SETLK, request, 1);
- if (err != -NFS4ERR_DELAY)
+ err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
+ if (err != -NFS4ERR_DELAY && err != -EKEYEXPIRED)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
do {
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
- err = _nfs4_do_setlk(state, F_SETLK, request, 0);
+ err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
switch (err) {
default:
goto out;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
nfs4_handle_exception(server, err, &exception);
err = 0;
}
{
struct nfs_inode *nfsi = NFS_I(state->inode);
unsigned char fl_flags = request->fl_flags;
- int status;
+ int status = -ENOLCK;
+ if ((fl_flags & FL_POSIX) &&
+ !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
+ goto out;
/* Is this a delegated open? */
status = nfs4_set_lock_state(state, request);
if (status != 0)
status = do_vfs_lock(request->fl_file, request);
goto out_unlock;
}
- status = _nfs4_do_setlk(state, cmd, request, 0);
+ status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
if (status != 0)
goto out_unlock;
/* Note: we always want to sleep here! */
if (err != 0)
goto out;
do {
- err = _nfs4_do_setlk(state, F_SETLK, fl, 0);
+ err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
switch (err) {
default:
printk(KERN_ERR "%s: unhandled error %d.\n",
case -NFS4ERR_EXPIRED:
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_BADSESSION:
+ case -NFS4ERR_BADSLOT:
+ case -NFS4ERR_BAD_HIGH_SLOT:
+ case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
+ case -NFS4ERR_DEADSESSION:
nfs4_schedule_state_recovery(server->nfs_client);
goto out;
case -ERESTARTSYS:
err = 0;
goto out;
case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
break;
}
err = nfs4_handle_exception(server, err, &exception);
status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
- if (status != NFS4ERR_CLID_INUSE)
+ if (status != -NFS4ERR_CLID_INUSE)
break;
if (signalled())
(struct nfs4_get_lease_time_data *)calldata;
dprintk("--> %s\n", __func__);
+ rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
/* just setup sequence, do not trigger session recovery
since we're invoked within one */
ret = nfs41_setup_sequence(data->clp->cl_session,
- &data->args->la_seq_args,
- &data->res->lr_seq_res, 0, task);
+ &data->args->la_seq_args,
+ &data->res->lr_seq_res, 0, task);
BUG_ON(ret == -EAGAIN);
rpc_call_start(task);
switch (task->tk_status) {
case -NFS4ERR_DELAY:
case -NFS4ERR_GRACE:
+ case -EKEYEXPIRED:
dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
rpc_delay(task, NFS4_POLL_RETRY_MIN);
task->tk_status = 0;
/*
* Reset a slot table
*/
-static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots,
- int old_max_slots, int ivalue)
+static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
+ int ivalue)
{
+ struct nfs4_slot *new = NULL;
int i;
int ret = 0;
- dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__, max_slots, tbl);
+ dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__,
+ max_reqs, tbl->max_slots);
- /*
- * Until we have dynamic slot table adjustment, insist
- * upon the same slot table size
- */
- if (max_slots != old_max_slots) {
- dprintk("%s reset slot table does't match old\n",
- __func__);
- ret = -EINVAL; /*XXX NFS4ERR_REQ_TOO_BIG ? */
- goto out;
+ /* Does the newly negotiated max_reqs match the existing slot table? */
+ if (max_reqs != tbl->max_slots) {
+ ret = -ENOMEM;
+ new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
+ GFP_KERNEL);
+ if (!new)
+ goto out;
+ ret = 0;
+ kfree(tbl->slots);
}
spin_lock(&tbl->slot_tbl_lock);
- for (i = 0; i < max_slots; ++i)
+ if (new) {
+ tbl->slots = new;
+ tbl->max_slots = max_reqs;
+ }
+ for (i = 0; i < tbl->max_slots; ++i)
tbl->slots[i].seq_nr = ivalue;
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
int status;
status = nfs4_reset_slot_table(&session->fc_slot_table,
- session->fc_attrs.max_reqs,
- session->fc_slot_table.max_slots,
- 1);
+ session->fc_attrs.max_reqs, 1);
if (status)
return status;
status = nfs4_reset_slot_table(&session->bc_slot_table,
- session->bc_attrs.max_reqs,
- session->bc_slot_table.max_slots,
- 0);
+ session->bc_attrs.max_reqs, 0);
return status;
}
tbl = &session->fc_slot_table;
tbl->highest_used_slotid = -1;
spin_lock_init(&tbl->slot_tbl_lock);
- rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
+ rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
tbl = &session->bc_slot_table;
tbl->highest_used_slotid = -1;
args->fc_attrs.headerpadsz = 0;
args->fc_attrs.max_rqst_sz = mxrqst_sz;
args->fc_attrs.max_resp_sz = mxresp_sz;
- args->fc_attrs.max_resp_sz_cached = mxresp_sz;
args->fc_attrs.max_ops = NFS4_MAX_OPS;
args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs;
dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
- "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
+ "max_ops=%u max_reqs=%u\n",
__func__,
args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
- args->fc_attrs.max_resp_sz_cached, args->fc_attrs.max_ops,
- args->fc_attrs.max_reqs);
+ args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
/* Back channel attributes */
args->bc_attrs.headerpadsz = 0;
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_session *session;
+ unsigned int rsize, wsize;
int ret;
if (!nfs4_has_session(clp))
return 0;
+ rsize = server->rsize;
+ if (rsize == 0)
+ rsize = NFS_MAX_FILE_IO_SIZE;
+ wsize = server->wsize;
+ if (wsize == 0)
+ wsize = NFS_MAX_FILE_IO_SIZE;
+
session = clp->cl_session;
- session->fc_attrs.max_rqst_sz = server->wsize + nfs41_maxwrite_overhead;
- session->fc_attrs.max_resp_sz = server->rsize + nfs41_maxread_overhead;
+ session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
+ session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
ret = nfs4_recover_expired_lease(server);
if (!ret)
args.sa_cache_this = 0;
return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args,
- &res, 0);
+ &res, args.sa_cache_this, 1);
+}
+
+static void nfs41_sequence_release(void *data)
+{
+ struct nfs_client *clp = (struct nfs_client *)data;
+
+ if (atomic_read(&clp->cl_count) > 1)
+ nfs4_schedule_state_renewal(clp);
+ nfs_put_client(clp);
}
-void nfs41_sequence_call_done(struct rpc_task *task, void *data)
+static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
{
struct nfs_client *clp = (struct nfs_client *)data;
if (task->tk_status < 0) {
dprintk("%s ERROR %d\n", __func__, task->tk_status);
+ if (atomic_read(&clp->cl_count) == 1)
+ goto out;
if (_nfs4_async_handle_error(task, NULL, clp, NULL)
== -EAGAIN) {
}
}
dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
-
+out:
kfree(task->tk_msg.rpc_argp);
kfree(task->tk_msg.rpc_resp);
static const struct rpc_call_ops nfs41_sequence_ops = {
.rpc_call_done = nfs41_sequence_call_done,
.rpc_call_prepare = nfs41_sequence_prepare,
+ .rpc_release = nfs41_sequence_release,
};
static int nfs41_proc_async_sequence(struct nfs_client *clp,
.rpc_cred = cred,
};
+ if (!atomic_inc_not_zero(&clp->cl_count))
+ return -EIO;
args = kzalloc(sizeof(*args), GFP_KERNEL);
- if (!args)
- return -ENOMEM;
res = kzalloc(sizeof(*res), GFP_KERNEL);
- if (!res) {
+ if (!args || !res) {
kfree(args);
+ kfree(res);
+ nfs_put_client(clp);
return -ENOMEM;
}
res->sr_slotid = NFS4_MAX_SLOT_TABLE;
{
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;
msg.rpc_resp = &calldata->res;
task_setup_data.callback_data = calldata;
task = rpc_run_task(&task_setup_data);
- if (IS_ERR(task))
+ if (IS_ERR(task)) {
status = PTR_ERR(task);
+ goto out;
+ }
rpc_put_task(task);
+ return 0;
out:
dprintk("<-- %s status=%d\n", __func__, status);
return status;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff