#include "internal.h"
#include "iostat.h"
#include "callback.h"
+#include "pnfs.h"
#define NFSDBG_FACILITY NFSDBG_PROC
| FATTR4_WORD0_MAXREAD
| FATTR4_WORD0_MAXWRITE
| FATTR4_WORD0_LEASE_TIME,
- 0
+ FATTR4_WORD1_TIME_DELTA
+ | FATTR4_WORD1_FS_LAYOUT_TYPES
};
const u32 nfs4_fs_locations_bitmap[2] = {
nfs4_state_mark_reclaim_nograce(clp, state);
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:
goto do_state_recovery;
* Must be called while holding tbl->slot_tbl_lock
*/
static void
-nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
+nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
{
+ int free_slotid = free_slot - tbl->slots;
int slotid = free_slotid;
+ BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
/* clear used bit in bitmap */
__clear_bit(slotid, tbl->used_slots);
struct nfs4_slot_table *tbl;
tbl = &res->sr_session->fc_slot_table;
- if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
+ if (!res->sr_slot) {
/* just wake up the next guy waiting since
* we may have not consumed a slot after all */
dprintk("%s: No slot\n", __func__);
}
spin_lock(&tbl->slot_tbl_lock);
- nfs4_free_slot(tbl, res->sr_slotid);
+ nfs4_free_slot(tbl, res->sr_slot);
nfs41_check_drain_session_complete(res->sr_session);
spin_unlock(&tbl->slot_tbl_lock);
- res->sr_slotid = NFS4_MAX_SLOT_TABLE;
+ res->sr_slot = NULL;
}
static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
{
unsigned long timestamp;
- struct nfs4_slot_table *tbl;
- struct nfs4_slot *slot;
struct nfs_client *clp;
/*
res->sr_status = NFS_OK;
/* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
- if (res->sr_slotid == NFS4_MAX_SLOT_TABLE)
+ if (!res->sr_slot)
goto out;
- tbl = &res->sr_session->fc_slot_table;
- slot = tbl->slots + res->sr_slotid;
-
/* Check the SEQUENCE operation status */
switch (res->sr_status) {
case 0:
/* Update the slot's sequence and clientid lease timer */
- ++slot->seq_nr;
+ ++res->sr_slot->seq_nr;
timestamp = res->sr_renewal_time;
clp = res->sr_session->clp;
do_renew_lease(clp, timestamp);
* returned NFS4ERR_DELAY as per Section 2.10.6.2
* of RFC5661.
*/
- dprintk("%s: slot=%d seq=%d: Operation in progress\n",
- __func__, res->sr_slotid, slot->seq_nr);
+ dprintk("%s: slot=%ld seq=%d: Operation in progress\n",
+ __func__,
+ res->sr_slot - res->sr_session->fc_slot_table.slots,
+ res->sr_slot->seq_nr);
goto out_retry;
default:
/* Just update the slot sequence no. */
- ++slot->seq_nr;
+ ++res->sr_slot->seq_nr;
}
out:
/* The session may be reset by one of the error handlers. */
dprintk("--> %s\n", __func__);
/* slot already allocated? */
- if (res->sr_slotid != NFS4_MAX_SLOT_TABLE)
+ if (res->sr_slot != NULL)
return 0;
- res->sr_slotid = NFS4_MAX_SLOT_TABLE;
tbl = &session->fc_slot_table;
spin_lock(&tbl->slot_tbl_lock);
dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr);
res->sr_session = session;
- res->sr_slotid = slotid;
+ res->sr_slot = slot;
res->sr_renewal_time = jiffies;
res->sr_status_flags = 0;
/*
goto out;
}
- dprintk("--> %s clp %p session %p sr_slotid %d\n",
- __func__, session->clp, session, res->sr_slotid);
+ dprintk("--> %s clp %p session %p sr_slot %ld\n",
+ __func__, session->clp, session, res->sr_slot ?
+ res->sr_slot - session->fc_slot_table.slots : -1);
ret = nfs41_setup_sequence(session, args, res, cache_reply,
task);
.callback_data = &data
};
- res->sr_slotid = NFS4_MAX_SLOT_TABLE;
+ res->sr_slot = NULL;
if (privileged)
task_setup.callback_ops = &nfs41_call_priv_sync_ops;
task = rpc_run_task(&task_setup);
p->o_res.server = p->o_arg.server;
nfs_fattr_init(&p->f_attr);
nfs_fattr_init(&p->dir_attr);
- p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
clear_bit(NFS_DELEGATED_STATE, &state->flags);
smp_rmb();
if (state->n_rdwr != 0) {
+ clear_bit(NFS_O_RDWR_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
return -ESTALE;
}
if (state->n_wronly != 0) {
+ clear_bit(NFS_O_WRONLY_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
return -ESTALE;
}
if (state->n_rdonly != 0) {
+ clear_bit(NFS_O_RDONLY_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
if (ret != 0)
return ret;
int err;
do {
err = _nfs4_do_open_reclaim(ctx, state);
- if (err != -NFS4ERR_DELAY && err != -EKEYEXPIRED)
+ if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+ case -EKEYEXPIRED:
+ /*
+ * User RPCSEC_GSS context has expired.
+ * We cannot recover this stateid now, so
+ * skip it and allow recovery thread to
+ * proceed.
+ */
case -ENOMEM:
err = 0;
goto out;
goto out;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
- case -EKEYEXPIRED:
nfs4_handle_exception(server, err, &exception);
err = 0;
}
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
- calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
path_get(path);
calldata->path = *path;
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
+static struct inode *
+nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
{
- struct file *filp;
- int ret;
-
- /* If the open_intent is for execute, we have an extra check to make */
- if (fmode & FMODE_EXEC) {
- ret = nfs_may_open(state->inode,
- state->owner->so_cred,
- nd->intent.open.flags);
- if (ret < 0)
- goto out_close;
- }
- filp = lookup_instantiate_filp(nd, path->dentry, NULL);
- if (!IS_ERR(filp)) {
- struct nfs_open_context *ctx;
- ctx = nfs_file_open_context(filp);
- ctx->state = state;
- return 0;
- }
- ret = PTR_ERR(filp);
-out_close:
- nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
- return ret;
-}
-
-struct dentry *
-nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
-{
- struct path path = {
- .mnt = nd->path.mnt,
- .dentry = dentry,
- };
- struct dentry *parent;
- struct iattr attr;
- struct rpc_cred *cred;
struct nfs4_state *state;
- struct dentry *res;
- int open_flags = nd->intent.open.flags;
- fmode_t fmode = open_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
-
- if (nd->flags & LOOKUP_CREATE) {
- attr.ia_mode = nd->intent.open.create_mode;
- attr.ia_valid = ATTR_MODE;
- if (!IS_POSIXACL(dir))
- attr.ia_mode &= ~current_umask();
- } else {
- open_flags &= ~O_EXCL;
- attr.ia_valid = 0;
- BUG_ON(open_flags & O_CREAT);
- }
- cred = rpc_lookup_cred();
- if (IS_ERR(cred))
- return (struct dentry *)cred;
- parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
- nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, fmode, open_flags, &attr, cred);
- put_rpccred(cred);
- if (IS_ERR(state)) {
- if (PTR_ERR(state) == -ENOENT) {
- d_add(dentry, NULL);
- nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- }
- nfs_unblock_sillyrename(parent);
- return (struct dentry *)state;
- }
- res = d_add_unique(dentry, igrab(state->inode));
- if (res != NULL)
- path.dentry = res;
- nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
- nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state, fmode);
- return res;
-}
-
-int
-nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd)
-{
- struct path path = {
- .mnt = nd->path.mnt,
- .dentry = dentry,
- };
- struct rpc_cred *cred;
- struct nfs4_state *state;
- fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
-
- cred = rpc_lookup_cred();
- if (IS_ERR(cred))
- return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
- put_rpccred(cred);
- if (IS_ERR(state)) {
- switch (PTR_ERR(state)) {
- case -EPERM:
- case -EACCES:
- case -EDQUOT:
- case -ENOSPC:
- case -EROFS:
- return PTR_ERR(state);
- default:
- goto out_drop;
- }
- }
- if (state->inode == dentry->d_inode) {
- nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state, fmode);
- return 1;
- }
- nfs4_close_sync(&path, state, fmode);
-out_drop:
- d_drop(dentry);
- return 0;
+ state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred);
+ if (IS_ERR(state))
+ return ERR_CAST(state);
+ ctx->state = state;
+ return igrab(state->inode);
}
static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
static int
nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
- int flags, struct nameidata *nd)
+ int flags, struct nfs_open_context *ctx)
{
- struct path path = {
- .mnt = nd->path.mnt,
+ struct path my_path = {
.dentry = dentry,
};
+ struct path *path = &my_path;
struct nfs4_state *state;
- struct rpc_cred *cred;
- fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
+ struct rpc_cred *cred = NULL;
+ fmode_t fmode = 0;
int status = 0;
- cred = rpc_lookup_cred();
- if (IS_ERR(cred)) {
- status = PTR_ERR(cred);
- goto out;
+ if (ctx != NULL) {
+ cred = ctx->cred;
+ path = &ctx->path;
+ fmode = ctx->mode;
}
- state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
+ state = nfs4_do_open(dir, path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
- goto out_putcred;
+ goto out;
}
d_add(dentry, igrab(state->inode));
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state, fmode);
+ if (ctx != NULL)
+ ctx->state = state;
else
- nfs4_close_sync(&path, state, fmode);
-out_putcred:
- put_rpccred(cred);
+ nfs4_close_sync(path, state, fmode);
out:
return status;
}
args->bitmask = server->cache_consistency_bitmask;
res->server = server;
+ res->seq_res.sr_slot = NULL;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
}
return 1;
}
+static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
+{
+ struct nfs_server *server = NFS_SERVER(dir);
+ struct nfs_renameargs *arg = msg->rpc_argp;
+ struct nfs_renameres *res = msg->rpc_resp;
+
+ msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
+ arg->bitmask = server->attr_bitmask;
+ res->server = server;
+}
+
+static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
+ struct inode *new_dir)
+{
+ struct nfs_renameres *res = task->tk_msg.rpc_resp;
+
+ if (!nfs4_sequence_done(task, &res->seq_res))
+ return 0;
+ if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
+ return 0;
+
+ 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);
+ return 1;
+}
+
static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_server *server = NFS_SERVER(old_dir);
- struct nfs4_rename_arg arg = {
+ struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.new_dir = NFS_FH(new_dir),
.old_name = old_name,
.new_name = new_name,
.bitmask = server->attr_bitmask,
};
- struct nfs4_rename_res res = {
+ struct nfs_renameres res = {
.server = server,
};
struct rpc_message msg = {
}
static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
- u64 cookie, struct page *page, unsigned int count, int plus)
+ u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs4_readdir_arg args = {
.fh = NFS_FH(dir),
- .pages = &page,
+ .pages = pages,
.pgbase = 0,
.count = count,
.bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
+ .plus = plus,
};
struct nfs4_readdir_res res;
struct rpc_message msg = {
}
static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
- u64 cookie, struct page *page, unsigned int count, int plus)
+ u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
_nfs4_proc_readdir(dentry, cred, cookie,
- page, count, plus),
+ pages, count, plus),
&exception);
} while (exception.retry);
return err;
nfs4_state_mark_reclaim_nograce(clp, state);
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:
goto do_state_recovery;
case -NFS4ERR_RESOURCE:
/* The IBM lawyers misread another document! */
case -NFS4ERR_DELAY:
- case -EKEYEXPIRED:
err = nfs4_delay(clp->cl_rpcclient, &timeout);
}
} while (err == 0);
memcpy(&data->stateid, stateid, sizeof(data->stateid));
data->res.fattr = &data->fattr;
data->res.server = server;
- data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
nfs_fattr_init(data->res.fattr);
data->timestamp = jiffies;
data->rpc_status = 0;
p->arg.fl = &p->fl;
p->arg.seqid = seqid;
p->res.seqid = seqid;
- p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
p->arg.stateid = &lsp->ls_stateid;
p->lsp = lsp;
atomic_inc(&lsp->ls_count);
p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
p->arg.lock_owner.id = lsp->ls_id.id;
p->res.lock_seqid = p->arg.lock_seqid;
- p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
p->lsp = lsp;
p->server = server;
atomic_inc(&lsp->ls_count);
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
- if (err != -NFS4ERR_DELAY && err != -EKEYEXPIRED)
+ if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
goto out;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
- case -EKEYEXPIRED:
nfs4_handle_exception(server, err, &exception);
err = 0;
}
nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
err = 0;
goto out;
+ case -EKEYEXPIRED:
+ /*
+ * User RPCSEC_GSS context has expired.
+ * We cannot recover this stateid now, so
+ * skip it and allow recovery thread to
+ * proceed.
+ */
+ err = 0;
+ goto out;
case -ENOMEM:
case -NFS4ERR_DENIED:
/* kill_proc(fl->fl_pid, SIGLOST, 1); */
err = 0;
goto out;
case -NFS4ERR_DELAY:
- case -EKEYEXPIRED:
break;
}
err = nfs4_handle_exception(server, err, &exception);
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;
};
int status;
- res.lr_seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
dprintk("--> %s\n", __func__);
task = rpc_run_task(&task_setup);
args->bc_attrs.max_reqs);
}
-static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd)
+static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
{
- if (rcvd <= sent)
- return 0;
- printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. "
- "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd);
- return -EINVAL;
+ struct nfs4_channel_attrs *sent = &args->fc_attrs;
+ struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
+
+ if (rcvd->headerpadsz > sent->headerpadsz)
+ return -EINVAL;
+ if (rcvd->max_resp_sz > sent->max_resp_sz)
+ return -EINVAL;
+ /*
+ * Our requested max_ops is the minimum we need; we're not
+ * prepared to break up compounds into smaller pieces than that.
+ * So, no point even trying to continue if the server won't
+ * cooperate:
+ */
+ if (rcvd->max_ops < sent->max_ops)
+ return -EINVAL;
+ if (rcvd->max_reqs == 0)
+ return -EINVAL;
+ return 0;
}
-#define _verify_fore_channel_attr(_name_) \
- _verify_channel_attr("fore", #_name_, \
- args->fc_attrs._name_, \
- session->fc_attrs._name_)
+static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
+{
+ struct nfs4_channel_attrs *sent = &args->bc_attrs;
+ struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
-#define _verify_back_channel_attr(_name_) \
- _verify_channel_attr("back", #_name_, \
- args->bc_attrs._name_, \
- session->bc_attrs._name_)
+ if (rcvd->max_rqst_sz > sent->max_rqst_sz)
+ return -EINVAL;
+ if (rcvd->max_resp_sz < sent->max_resp_sz)
+ return -EINVAL;
+ if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
+ return -EINVAL;
+ /* These would render the backchannel useless: */
+ if (rcvd->max_ops == 0)
+ return -EINVAL;
+ if (rcvd->max_reqs == 0)
+ return -EINVAL;
+ return 0;
+}
-/*
- * The server is not allowed to increase the fore channel header pad size,
- * maximum response size, or maximum number of operations.
- *
- * The back channel attributes are only negotiatied down: We send what the
- * (back channel) server insists upon.
- */
static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
struct nfs4_session *session)
{
- int ret = 0;
-
- ret |= _verify_fore_channel_attr(headerpadsz);
- ret |= _verify_fore_channel_attr(max_resp_sz);
- ret |= _verify_fore_channel_attr(max_ops);
-
- ret |= _verify_back_channel_attr(headerpadsz);
- ret |= _verify_back_channel_attr(max_rqst_sz);
- ret |= _verify_back_channel_attr(max_resp_sz);
- ret |= _verify_back_channel_attr(max_resp_sz_cached);
- ret |= _verify_back_channel_attr(max_ops);
- ret |= _verify_back_channel_attr(max_reqs);
+ int ret;
- return ret;
+ ret = nfs4_verify_fore_channel_attrs(args, session);
+ if (ret)
+ return ret;
+ return nfs4_verify_back_channel_attrs(args, session);
}
static int _nfs4_proc_create_session(struct nfs_client *clp)
{
switch(task->tk_status) {
case -NFS4ERR_DELAY:
- case -EKEYEXPIRED:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
return -EAGAIN;
default:
if (!atomic_inc_not_zero(&clp->cl_count))
return ERR_PTR(-EIO);
- calldata = kmalloc(sizeof(*calldata), GFP_NOFS);
+ calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
if (calldata == NULL) {
nfs_put_client(clp);
return ERR_PTR(-ENOMEM);
}
- calldata->res.sr_slotid = NFS4_MAX_SLOT_TABLE;
msg.rpc_argp = &calldata->args;
msg.rpc_resp = &calldata->res;
calldata->clp = clp;
case -NFS4ERR_WRONG_CRED: /* What to do here? */
break;
case -NFS4ERR_DELAY:
- case -EKEYEXPIRED:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
return -EAGAIN;
default:
goto out;
calldata->clp = clp;
calldata->arg.one_fs = 0;
- calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
msg.rpc_argp = &calldata->arg;
msg.rpc_resp = &calldata->res;
dprintk("<-- %s status=%d\n", __func__, status);
return status;
}
+
+static void
+nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
+{
+ struct nfs4_layoutget *lgp = calldata;
+ struct inode *ino = lgp->args.inode;
+ struct nfs_server *server = NFS_SERVER(ino);
+
+ dprintk("--> %s\n", __func__);
+ if (nfs4_setup_sequence(server, &lgp->args.seq_args,
+ &lgp->res.seq_res, 0, task))
+ return;
+ rpc_call_start(task);
+}
+
+static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
+{
+ struct nfs4_layoutget *lgp = calldata;
+ struct nfs_server *server = NFS_SERVER(lgp->args.inode);
+
+ dprintk("--> %s\n", __func__);
+
+ if (!nfs4_sequence_done(task, &lgp->res.seq_res))
+ return;
+
+ switch (task->tk_status) {
+ case 0:
+ break;
+ case -NFS4ERR_LAYOUTTRYLATER:
+ case -NFS4ERR_RECALLCONFLICT:
+ task->tk_status = -NFS4ERR_DELAY;
+ /* Fall through */
+ default:
+ if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
+ rpc_restart_call_prepare(task);
+ return;
+ }
+ }
+ lgp->status = task->tk_status;
+ dprintk("<-- %s\n", __func__);
+}
+
+static void nfs4_layoutget_release(void *calldata)
+{
+ struct nfs4_layoutget *lgp = calldata;
+
+ dprintk("--> %s\n", __func__);
+ put_layout_hdr(lgp->args.inode);
+ if (lgp->res.layout.buf != NULL)
+ free_page((unsigned long) lgp->res.layout.buf);
+ put_nfs_open_context(lgp->args.ctx);
+ kfree(calldata);
+ dprintk("<-- %s\n", __func__);
+}
+
+static const struct rpc_call_ops nfs4_layoutget_call_ops = {
+ .rpc_call_prepare = nfs4_layoutget_prepare,
+ .rpc_call_done = nfs4_layoutget_done,
+ .rpc_release = nfs4_layoutget_release,
+};
+
+int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
+{
+ struct nfs_server *server = NFS_SERVER(lgp->args.inode);
+ struct rpc_task *task;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
+ .rpc_argp = &lgp->args,
+ .rpc_resp = &lgp->res,
+ };
+ struct rpc_task_setup task_setup_data = {
+ .rpc_client = server->client,
+ .rpc_message = &msg,
+ .callback_ops = &nfs4_layoutget_call_ops,
+ .callback_data = lgp,
+ .flags = RPC_TASK_ASYNC,
+ };
+ int status = 0;
+
+ dprintk("--> %s\n", __func__);
+
+ lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS);
+ if (lgp->res.layout.buf == NULL) {
+ nfs4_layoutget_release(lgp);
+ return -ENOMEM;
+ }
+
+ lgp->res.seq_res.sr_slot = NULL;
+ 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)
+ goto out;
+ status = lgp->status;
+ if (status != 0)
+ goto out;
+ status = pnfs_layout_process(lgp);
+out:
+ rpc_put_task(task);
+ dprintk("<-- %s status=%d\n", __func__, status);
+ return status;
+}
+
+static int
+_nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
+{
+ struct nfs4_getdeviceinfo_args args = {
+ .pdev = pdev,
+ };
+ struct nfs4_getdeviceinfo_res res = {
+ .pdev = pdev,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ };
+ int status;
+
+ dprintk("--> %s\n", __func__);
+ status = nfs4_call_sync(server, &msg, &args, &res, 0);
+ dprintk("<-- %s status=%d\n", __func__, status);
+
+ return status;
+}
+
+int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
+{
+ struct nfs4_exception exception = { };
+ int err;
+
+ do {
+ err = nfs4_handle_exception(server,
+ _nfs4_proc_getdeviceinfo(server, pdev),
+ &exception);
+ } while (exception.retry);
+ return err;
+}
+EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
+
#endif /* CONFIG_NFS_V4_1 */
struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
.unlink_setup = nfs4_proc_unlink_setup,
.unlink_done = nfs4_proc_unlink_done,
.rename = nfs4_proc_rename,
+ .rename_setup = nfs4_proc_rename_setup,
+ .rename_done = nfs4_proc_rename_done,
.link = nfs4_proc_link,
.symlink = nfs4_proc_symlink,
.mkdir = nfs4_proc_mkdir,
.lock = nfs4_proc_lock,
.clear_acl_cache = nfs4_zap_acl_attr,
.close_context = nfs4_close_context,
+ .open_context = nfs4_atomic_open,
};
/*
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff