*/
#include <linux/mm.h>
-#include <linux/utsname.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_page.h>
-#include <linux/smp_lock.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/module.h>
+#include <linux/sunrpc/bc_xprt.h>
#include "nfs4_fs.h"
#include "delegation.h"
#define NFS4_POLL_RETRY_MIN (HZ/10)
#define NFS4_POLL_RETRY_MAX (15*HZ)
+#define NFS4_MAX_LOOP_ON_RECOVER (10)
+
struct nfs4_opendata;
static int _nfs4_proc_open(struct nfs4_opendata *data);
static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
/* Prevent leaks of NFSv4 errors into userland */
static int nfs4_map_errors(int err)
{
- if (err < -1000) {
+ if (err >= -1000)
+ return err;
+ switch (err) {
+ case -NFS4ERR_RESOURCE:
+ return -EREMOTEIO;
+ default:
dprintk("%s could not handle NFSv4 error %d\n",
__func__, -err);
- return -EIO;
+ break;
}
- return err;
+ return -EIO;
}
/*
static int nfs4_recover_session(struct nfs4_session *session)
{
struct nfs_client *clp = session->clp;
+ unsigned int loop;
int ret;
- for (;;) {
+ for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
ret = nfs4_wait_clnt_recover(clp);
if (ret != 0)
- return ret;
+ break;
if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))
break;
nfs4_schedule_state_manager(clp);
+ ret = -EIO;
}
- return 0;
+ return ret;
}
static int nfs41_setup_sequence(struct nfs4_session *session,
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,
p->o_arg.server = server;
p->o_arg.bitmask = server->attr_bitmask;
p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
- p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
if (flags & O_EXCL) {
u32 *s = (u32 *) p->o_arg.u.verifier.data;
s[0] = jiffies;
err = _nfs4_open_delegation_recall(ctx, state, stateid);
switch (err) {
case 0:
- return err;
+ case -ENOENT:
+ case -ESTALE:
+ goto out;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
/* Don't recall a delegation if it was lost */
nfs4_schedule_state_recovery(server->nfs_client);
- return err;
+ goto out;
+ case -ERESTARTSYS:
+ /*
+ * The show must go on: exit, but mark the
+ * stateid as needing recovery.
+ */
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_BAD_STATEID:
+ nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+ case -ENOMEM:
+ err = 0;
+ goto out;
}
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
+out:
return err;
}
static int nfs4_recover_expired_lease(struct nfs_server *server)
{
struct nfs_client *clp = server->nfs_client;
+ unsigned int loop;
int ret;
- for (;;) {
+ for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
ret = nfs4_wait_clnt_recover(clp);
if (ret != 0)
- return ret;
+ break;
if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
!test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
break;
nfs4_schedule_state_recovery(clp);
+ ret = -EIO;
}
- return 0;
+ return ret;
}
/*
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)
status = nfs4_call_sync(server, &msg, &args, &res, 0);
if (status == 0) {
memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
+ server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
+ NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
+ NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
+ NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
+ NFS_CAP_CTIME|NFS_CAP_MTIME);
if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
server->caps |= NFS_CAP_ACLS;
if (res.has_links != 0)
server->caps |= NFS_CAP_HARDLINKS;
if (res.has_symlinks != 0)
server->caps |= NFS_CAP_SYMLINKS;
+ if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
+ server->caps |= NFS_CAP_FILEID;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
+ server->caps |= NFS_CAP_MODE;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
+ server->caps |= NFS_CAP_NLINK;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
+ server->caps |= NFS_CAP_OWNER;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
+ server->caps |= NFS_CAP_OWNER_GROUP;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
+ server->caps |= NFS_CAP_ATIME;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
+ server->caps |= NFS_CAP_CTIME;
+ if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
+ server->caps |= NFS_CAP_MTIME;
+
memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
.rpc_argp = &args,
.rpc_resp = &res,
};
+
nfs_fattr_init(info->fattr);
return nfs4_call_sync(server, &msg, &args, &res, 0);
}
if (time_before(clp->cl_last_renewal,timestamp))
clp->cl_last_renewal = timestamp;
spin_unlock(&clp->cl_lock);
- dprintk("%s calling put_rpccred on rpc_cred %p\n", __func__,
- task->tk_msg.rpc_cred);
- put_rpccred(task->tk_msg.rpc_cred);
}
static const struct rpc_call_ops nfs4_renew_ops = {
ret = nfs_revalidate_inode(server, inode);
if (ret < 0)
return ret;
- if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
- nfs_zap_acl_cache(inode);
ret = nfs4_read_cached_acl(inode, buf, buflen);
if (ret != -ENOENT)
return ret;
ret = nfs4_wait_for_completion_rpc_task(task);
if (ret == 0) {
ret = data->rpc_status;
- if (ret == -NFS4ERR_DENIED)
- ret = -EAGAIN;
} else
data->cancelled = 1;
rpc_put_task(task);
int err;
do {
+ err = _nfs4_proc_setlk(state, cmd, request);
+ if (err == -NFS4ERR_DENIED)
+ err = -EAGAIN;
err = nfs4_handle_exception(NFS_SERVER(state->inode),
- _nfs4_proc_setlk(state, cmd, request),
- &exception);
+ err, &exception);
} while (exception.retry);
return err;
}
if (request->fl_start < 0 || request->fl_end < 0)
return -EINVAL;
- if (IS_GETLK(cmd))
- return nfs4_proc_getlk(state, F_GETLK, request);
+ if (IS_GETLK(cmd)) {
+ if (state != NULL)
+ return nfs4_proc_getlk(state, F_GETLK, request);
+ return 0;
+ }
if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
return -EINVAL;
- if (request->fl_type == F_UNLCK)
- return nfs4_proc_unlck(state, cmd, request);
+ if (request->fl_type == F_UNLCK) {
+ if (state != NULL)
+ return nfs4_proc_unlck(state, cmd, request);
+ return 0;
+ }
+ if (state == NULL)
+ return -ENOLCK;
do {
status = nfs4_proc_setlk(state, cmd, request);
if ((status != -EAGAIN) || IS_SETLK(cmd))
goto out;
do {
err = _nfs4_do_setlk(state, F_SETLK, fl, 0);
- if (err != -NFS4ERR_DELAY)
- break;
+ switch (err) {
+ default:
+ printk(KERN_ERR "%s: unhandled error %d.\n",
+ __func__, err);
+ case 0:
+ case -ESTALE:
+ goto out;
+ case -NFS4ERR_EXPIRED:
+ case -NFS4ERR_STALE_CLIENTID:
+ case -NFS4ERR_STALE_STATEID:
+ nfs4_schedule_state_recovery(server->nfs_client);
+ goto out;
+ case -ERESTARTSYS:
+ /*
+ * The show must go on: exit, but mark the
+ * stateid as needing recovery.
+ */
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_BAD_STATEID:
+ case -NFS4ERR_OPENMODE:
+ nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+ err = 0;
+ goto out;
+ case -ENOMEM:
+ case -NFS4ERR_DENIED:
+ /* kill_proc(fl->fl_pid, SIGLOST, 1); */
+ err = 0;
+ goto out;
+ case -NFS4ERR_DELAY:
+ break;
+ }
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
out:
return status;
}
-/* Reset a slot table */
-static int nfs4_reset_slot_table(struct nfs4_session *session)
+/*
+ * Reset a slot table
+ */
+static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots,
+ int old_max_slots, int ivalue)
{
- struct nfs4_slot_table *tbl = &session->fc_slot_table;
- int i, max_slots = session->fc_attrs.max_reqs;
- int old_max_slots = session->fc_slot_table.max_slots;
+ int i;
int ret = 0;
- dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__,
- session->fc_attrs.max_reqs, tbl);
+ dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__, max_slots, tbl);
- /* Until we have dynamic slot table adjustment, insist
- * upon the same slot table size */
+ /*
+ * 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__);
}
spin_lock(&tbl->slot_tbl_lock);
for (i = 0; i < max_slots; ++i)
- tbl->slots[i].seq_nr = 1;
+ tbl->slots[i].seq_nr = ivalue;
tbl->highest_used_slotid = -1;
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
}
/*
+ * Reset the forechannel and backchannel slot tables
+ */
+static int nfs4_reset_slot_tables(struct nfs4_session *session)
+{
+ int status;
+
+ status = nfs4_reset_slot_table(&session->fc_slot_table,
+ session->fc_attrs.max_reqs,
+ session->fc_slot_table.max_slots,
+ 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);
+ return status;
+}
+
+/* Destroy the slot table */
+static void nfs4_destroy_slot_tables(struct nfs4_session *session)
+{
+ if (session->fc_slot_table.slots != NULL) {
+ kfree(session->fc_slot_table.slots);
+ session->fc_slot_table.slots = NULL;
+ }
+ if (session->bc_slot_table.slots != NULL) {
+ kfree(session->bc_slot_table.slots);
+ session->bc_slot_table.slots = NULL;
+ }
+ return;
+}
+
+/*
* Initialize slot table
*/
-static int nfs4_init_slot_table(struct nfs4_session *session)
+static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
+ int max_slots, int ivalue)
{
- struct nfs4_slot_table *tbl = &session->fc_slot_table;
- int i, max_slots = session->fc_attrs.max_reqs;
+ int i;
struct nfs4_slot *slot;
int ret = -ENOMEM;
BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE);
- dprintk("--> %s: max_reqs=%u\n", __func__,
- session->fc_attrs.max_reqs);
+ dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL);
if (!slot)
goto out;
for (i = 0; i < max_slots; ++i)
- slot[i].seq_nr = 1;
+ slot[i].seq_nr = ivalue;
ret = 0;
spin_lock(&tbl->slot_tbl_lock);
out:
dprintk("<-- %s: return %d\n", __func__, ret);
return ret;
+
out_free:
kfree(slot);
goto out;
}
-/* Destroy the slot table */
-static void nfs4_destroy_slot_table(struct nfs4_session *session)
+/*
+ * Initialize the forechannel and backchannel tables
+ */
+static int nfs4_init_slot_tables(struct nfs4_session *session)
{
- if (session->fc_slot_table.slots == NULL)
- return;
- kfree(session->fc_slot_table.slots);
- session->fc_slot_table.slots = NULL;
- return;
+ int status;
+
+ status = nfs4_init_slot_table(&session->fc_slot_table,
+ session->fc_attrs.max_reqs, 1);
+ if (status)
+ return status;
+
+ status = nfs4_init_slot_table(&session->bc_slot_table,
+ session->bc_attrs.max_reqs, 0);
+ if (status)
+ nfs4_destroy_slot_tables(session);
+
+ return status;
}
struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
tbl = &session->fc_slot_table;
spin_lock_init(&tbl->slot_tbl_lock);
- rpc_init_wait_queue(&tbl->slot_tbl_waitq, "Slot table");
+ rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
+
+ tbl = &session->bc_slot_table;
+ spin_lock_init(&tbl->slot_tbl_lock);
+ rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
+
session->clp = clp;
return session;
}
void nfs4_destroy_session(struct nfs4_session *session)
{
- nfs4_destroy_slot_table(session);
+ nfs4_proc_destroy_session(session);
+ dprintk("%s Destroy backchannel for xprt %p\n",
+ __func__, session->clp->cl_rpcclient->cl_xprt);
+ xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
+ NFS41_BC_MIN_CALLBACKS);
+ nfs4_destroy_slot_tables(session);
kfree(session);
}
int status;
nfs4_init_channel_attrs(&args);
- args.flags = (SESSION4_PERSIST);
+ args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
/* Init or reset the fore channel */
if (reset)
- status = nfs4_reset_slot_table(session);
+ status = nfs4_reset_slot_tables(session);
else
- status = nfs4_init_slot_table(session);
+ status = nfs4_init_slot_tables(session);
dprintk("fore channel slot table initialization returned %d\n", status);
if (status)
goto out;
return status;
}
+int nfs4_init_session(struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+ int ret;
+
+ if (!nfs4_has_session(clp))
+ return 0;
+
+ clp->cl_session->fc_attrs.max_rqst_sz = server->wsize;
+ clp->cl_session->fc_attrs.max_resp_sz = server->rsize;
+ ret = nfs4_recover_expired_lease(server);
+ if (!ret)
+ ret = nfs4_check_client_ready(clp);
+ return ret;
+}
+
/*
* Renew the cl_session lease.
*/
nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
- put_rpccred(task->tk_msg.rpc_cred);
kfree(task->tk_msg.rpc_argp);
kfree(task->tk_msg.rpc_resp);