void nfsd4_end_grace(struct nfsd_net *nn);
static void _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps);
static void nfsd4_file_hash_remove(struct nfs4_file *fi);
+static void deleg_reaper(struct nfsd_net *nn);
/* Locking: */
static const struct nfsd4_callback_ops nfsd4_cb_recall_ops;
static const struct nfsd4_callback_ops nfsd4_cb_notify_lock_ops;
+static const struct nfsd4_callback_ops nfsd4_cb_getattr_ops;
static struct workqueue_struct *laundry_wq;
struct nfsd4_blocked_lock *nbl;
nbl = container_of(kref, struct nfsd4_blocked_lock, nbl_kref);
+ locks_release_private(&nbl->nbl_lock);
kfree(nbl);
}
free_blocked_lock(struct nfsd4_blocked_lock *nbl)
{
locks_delete_block(&nbl->nbl_lock);
- locks_release_private(&nbl->nbl_lock);
kref_put(&nbl->nbl_kref, free_nbl);
}
dp->dl_recalled = false;
nfsd4_init_cb(&dp->dl_recall, dp->dl_stid.sc_client,
&nfsd4_cb_recall_ops, NFSPROC4_CLNT_CB_RECALL);
+ nfsd4_init_cb(&dp->dl_cb_fattr.ncf_getattr, dp->dl_stid.sc_client,
+ &nfsd4_cb_getattr_ops, NFSPROC4_CLNT_CB_GETATTR);
+ dp->dl_cb_fattr.ncf_file_modified = false;
+ dp->dl_cb_fattr.ncf_cb_bmap[0] = FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE;
get_nfs4_file(fp);
dp->dl_stid.sc_file = fp;
return dp;
return;
}
idr_remove(&clp->cl_stateids, s->sc_stateid.si_opaque.so_id);
+ if (s->sc_status & SC_STATUS_ADMIN_REVOKED)
+ atomic_dec(&s->sc_client->cl_admin_revoked);
nfs4_free_cpntf_statelist(clp->net, s);
spin_unlock(&clp->cl_lock);
s->sc_free(s);
WARN_ON_ONCE(!fp->fi_delegees);
- vfs_setlease(nf->nf_file, F_UNLCK, NULL, (void **)&dp);
+ kernel_setlease(nf->nf_file, F_UNLCK, NULL, (void **)&dp);
put_deleg_file(fp);
}
nfs4_put_stid(&dp->dl_stid);
}
-void nfs4_unhash_stid(struct nfs4_stid *s)
-{
- s->sc_type = 0;
-}
-
/**
* nfs4_delegation_exists - Discover if this delegation already exists
* @clp: a pointer to the nfs4_client we're granting a delegation to
lockdep_assert_held(&state_lock);
lockdep_assert_held(&fp->fi_lock);
+ lockdep_assert_held(&clp->cl_lock);
if (nfs4_delegation_exists(clp, fp))
return -EAGAIN;
refcount_inc(&dp->dl_stid.sc_count);
- dp->dl_stid.sc_type = NFS4_DELEG_STID;
+ dp->dl_stid.sc_type = SC_TYPE_DELEG;
list_add(&dp->dl_perfile, &fp->fi_delegations);
list_add(&dp->dl_perclnt, &clp->cl_delegations);
return 0;
}
static bool
-unhash_delegation_locked(struct nfs4_delegation *dp)
+unhash_delegation_locked(struct nfs4_delegation *dp, unsigned short statusmask)
{
struct nfs4_file *fp = dp->dl_stid.sc_file;
if (!delegation_hashed(dp))
return false;
- dp->dl_stid.sc_type = NFS4_CLOSED_DELEG_STID;
+ if (statusmask == SC_STATUS_REVOKED &&
+ dp->dl_stid.sc_client->cl_minorversion == 0)
+ statusmask = SC_STATUS_CLOSED;
+ dp->dl_stid.sc_status |= statusmask;
+ if (statusmask & SC_STATUS_ADMIN_REVOKED)
+ atomic_inc(&dp->dl_stid.sc_client->cl_admin_revoked);
+
/* Ensure that deleg break won't try to requeue it */
++dp->dl_time;
spin_lock(&fp->fi_lock);
bool unhashed;
spin_lock(&state_lock);
- unhashed = unhash_delegation_locked(dp);
+ unhashed = unhash_delegation_locked(dp, SC_STATUS_CLOSED);
spin_unlock(&state_lock);
if (unhashed)
destroy_unhashed_deleg(dp);
trace_nfsd_stid_revoke(&dp->dl_stid);
- if (clp->cl_minorversion) {
+ if (dp->dl_stid.sc_status &
+ (SC_STATUS_REVOKED | SC_STATUS_ADMIN_REVOKED)) {
spin_lock(&clp->cl_lock);
- dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID;
refcount_inc(&dp->dl_stid.sc_count);
list_add(&dp->dl_recall_lru, &clp->cl_revoked);
spin_unlock(&clp->cl_lock);
destroy_unhashed_deleg(dp);
}
-/*
- * SETCLIENTID state
+/*
+ * SETCLIENTID state
*/
static unsigned int clientid_hashval(u32 id)
}
idr_remove(&clp->cl_stateids, s->sc_stateid.si_opaque.so_id);
+ if (s->sc_status & SC_STATUS_ADMIN_REVOKED)
+ atomic_dec(&s->sc_client->cl_admin_revoked);
list_add(&stp->st_locks, reaplist);
}
if (!unhash_ol_stateid(stp))
return false;
list_del_init(&stp->st_locks);
- nfs4_unhash_stid(&stp->st_stid);
+ stp->st_stid.sc_status |= SC_STATUS_CLOSED;
return true;
}
while (!list_empty(&open_stp->st_locks)) {
stp = list_entry(open_stp->st_locks.next,
struct nfs4_ol_stateid, st_locks);
- WARN_ON(!unhash_lock_stateid(stp));
+ unhash_lock_stateid(stp);
put_ol_stateid_locked(stp, reaplist);
}
}
LIST_HEAD(reaplist);
spin_lock(&stp->st_stid.sc_client->cl_lock);
+ stp->st_stid.sc_status |= SC_STATUS_CLOSED;
if (unhash_open_stateid(stp, &reaplist))
put_ol_stateid_locked(stp, &reaplist);
spin_unlock(&stp->st_stid.sc_client->cl_lock);
nfs4_put_stateowner(&oo->oo_owner);
}
+static struct nfs4_stid *find_one_sb_stid(struct nfs4_client *clp,
+ struct super_block *sb,
+ unsigned int sc_types)
+{
+ unsigned long id, tmp;
+ struct nfs4_stid *stid;
+
+ spin_lock(&clp->cl_lock);
+ idr_for_each_entry_ul(&clp->cl_stateids, stid, tmp, id)
+ if ((stid->sc_type & sc_types) &&
+ stid->sc_status == 0 &&
+ stid->sc_file->fi_inode->i_sb == sb) {
+ refcount_inc(&stid->sc_count);
+ break;
+ }
+ spin_unlock(&clp->cl_lock);
+ return stid;
+}
+
+/**
+ * nfsd4_revoke_states - revoke all nfsv4 states associated with given filesystem
+ * @net: used to identify instance of nfsd (there is one per net namespace)
+ * @sb: super_block used to identify target filesystem
+ *
+ * All nfs4 states (open, lock, delegation, layout) held by the server instance
+ * and associated with a file on the given filesystem will be revoked resulting
+ * in any files being closed and so all references from nfsd to the filesystem
+ * being released. Thus nfsd will no longer prevent the filesystem from being
+ * unmounted.
+ *
+ * The clients which own the states will subsequently being notified that the
+ * states have been "admin-revoked".
+ */
+void nfsd4_revoke_states(struct net *net, struct super_block *sb)
+{
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ unsigned int idhashval;
+ unsigned int sc_types;
+
+ sc_types = SC_TYPE_OPEN | SC_TYPE_LOCK | SC_TYPE_DELEG | SC_TYPE_LAYOUT;
+
+ spin_lock(&nn->client_lock);
+ for (idhashval = 0; idhashval < CLIENT_HASH_MASK; idhashval++) {
+ struct list_head *head = &nn->conf_id_hashtbl[idhashval];
+ struct nfs4_client *clp;
+ retry:
+ list_for_each_entry(clp, head, cl_idhash) {
+ struct nfs4_stid *stid = find_one_sb_stid(clp, sb,
+ sc_types);
+ if (stid) {
+ struct nfs4_ol_stateid *stp;
+ struct nfs4_delegation *dp;
+ struct nfs4_layout_stateid *ls;
+
+ spin_unlock(&nn->client_lock);
+ switch (stid->sc_type) {
+ case SC_TYPE_OPEN:
+ stp = openlockstateid(stid);
+ mutex_lock_nested(&stp->st_mutex,
+ OPEN_STATEID_MUTEX);
+
+ spin_lock(&clp->cl_lock);
+ if (stid->sc_status == 0) {
+ stid->sc_status |=
+ SC_STATUS_ADMIN_REVOKED;
+ atomic_inc(&clp->cl_admin_revoked);
+ spin_unlock(&clp->cl_lock);
+ release_all_access(stp);
+ } else
+ spin_unlock(&clp->cl_lock);
+ mutex_unlock(&stp->st_mutex);
+ break;
+ case SC_TYPE_LOCK:
+ stp = openlockstateid(stid);
+ mutex_lock_nested(&stp->st_mutex,
+ LOCK_STATEID_MUTEX);
+ spin_lock(&clp->cl_lock);
+ if (stid->sc_status == 0) {
+ struct nfs4_lockowner *lo =
+ lockowner(stp->st_stateowner);
+ struct nfsd_file *nf;
+
+ stid->sc_status |=
+ SC_STATUS_ADMIN_REVOKED;
+ atomic_inc(&clp->cl_admin_revoked);
+ spin_unlock(&clp->cl_lock);
+ nf = find_any_file(stp->st_stid.sc_file);
+ if (nf) {
+ get_file(nf->nf_file);
+ filp_close(nf->nf_file,
+ (fl_owner_t)lo);
+ nfsd_file_put(nf);
+ }
+ release_all_access(stp);
+ } else
+ spin_unlock(&clp->cl_lock);
+ mutex_unlock(&stp->st_mutex);
+ break;
+ case SC_TYPE_DELEG:
+ dp = delegstateid(stid);
+ spin_lock(&state_lock);
+ if (!unhash_delegation_locked(
+ dp, SC_STATUS_ADMIN_REVOKED))
+ dp = NULL;
+ spin_unlock(&state_lock);
+ if (dp)
+ revoke_delegation(dp);
+ break;
+ case SC_TYPE_LAYOUT:
+ ls = layoutstateid(stid);
+ nfsd4_close_layout(ls);
+ break;
+ }
+ nfs4_put_stid(stid);
+ spin_lock(&nn->client_lock);
+ if (clp->cl_minorversion == 0)
+ /* Allow cleanup after a lease period.
+ * store_release ensures cleanup will
+ * see any newly revoked states if it
+ * sees the time updated.
+ */
+ nn->nfs40_last_revoke =
+ ktime_get_boottime_seconds();
+ goto retry;
+ }
+ }
+ }
+ spin_unlock(&nn->client_lock);
+}
+
static inline int
hash_sessionid(struct nfs4_sessionid *sessionid)
{
spin_lock(&state_lock);
while (!list_empty(&clp->cl_delegations)) {
dp = list_entry(clp->cl_delegations.next, struct nfs4_delegation, dl_perclnt);
- WARN_ON(!unhash_delegation_locked(dp));
+ unhash_delegation_locked(dp, SC_STATUS_CLOSED);
list_add(&dp->dl_recall_lru, &reaplist);
}
spin_unlock(&state_lock);
}
static struct nfs4_stid *
-find_stateid_by_type(struct nfs4_client *cl, stateid_t *t, char typemask)
+find_stateid_by_type(struct nfs4_client *cl, stateid_t *t,
+ unsigned short typemask, unsigned short ok_states)
{
struct nfs4_stid *s;
spin_lock(&cl->cl_lock);
s = find_stateid_locked(cl, t);
if (s != NULL) {
- if (typemask & s->sc_type)
+ if ((s->sc_status & ~ok_states) == 0 &&
+ (typemask & s->sc_type))
refcount_inc(&s->sc_count);
else
s = NULL;
static void seq_quote_mem(struct seq_file *m, char *data, int len)
{
- seq_printf(m, "\"");
+ seq_puts(m, "\"");
seq_escape_mem(m, data, len, ESCAPE_HEX | ESCAPE_NAP | ESCAPE_APPEND, "\"\\");
- seq_printf(m, "\"");
+ seq_puts(m, "\"");
}
static const char *cb_state2str(int state)
seq_puts(m, "status: unconfirmed\n");
seq_printf(m, "seconds from last renew: %lld\n",
ktime_get_boottime_seconds() - clp->cl_time);
- seq_printf(m, "name: ");
+ seq_puts(m, "name: ");
seq_quote_mem(m, clp->cl_name.data, clp->cl_name.len);
seq_printf(m, "\nminor version: %d\n", clp->cl_minorversion);
if (clp->cl_nii_domain.data) {
- seq_printf(m, "Implementation domain: ");
+ seq_puts(m, "Implementation domain: ");
seq_quote_mem(m, clp->cl_nii_domain.data,
clp->cl_nii_domain.len);
- seq_printf(m, "\nImplementation name: ");
+ seq_puts(m, "\nImplementation name: ");
seq_quote_mem(m, clp->cl_nii_name.data, clp->cl_nii_name.len);
seq_printf(m, "\nImplementation time: [%lld, %ld]\n",
clp->cl_nii_time.tv_sec, clp->cl_nii_time.tv_nsec);
}
seq_printf(m, "callback state: %s\n", cb_state2str(clp->cl_cb_state));
seq_printf(m, "callback address: %pISpc\n", &clp->cl_cb_conn.cb_addr);
+ seq_printf(m, "admin-revoked states: %d\n",
+ atomic_read(&clp->cl_admin_revoked));
drop_client(clp);
return 0;
static void nfs4_show_owner(struct seq_file *s, struct nfs4_stateowner *oo)
{
- seq_printf(s, "owner: ");
+ seq_puts(s, "owner: ");
seq_quote_mem(s, oo->so_owner.data, oo->so_owner.len);
}
struct nfs4_stateowner *oo;
unsigned int access, deny;
- if (st->sc_type != NFS4_OPEN_STID && st->sc_type != NFS4_LOCK_STID)
- return 0; /* XXX: or SEQ_SKIP? */
ols = openlockstateid(st);
oo = ols->st_stateowner;
nf = st->sc_file;
- spin_lock(&nf->fi_lock);
- file = find_any_file_locked(nf);
- if (!file)
- goto out;
-
- seq_printf(s, "- ");
+ seq_puts(s, "- ");
nfs4_show_stateid(s, &st->sc_stateid);
- seq_printf(s, ": { type: open, ");
+ seq_puts(s, ": { type: open, ");
access = bmap_to_share_mode(ols->st_access_bmap);
deny = bmap_to_share_mode(ols->st_deny_bmap);
deny & NFS4_SHARE_ACCESS_READ ? "r" : "-",
deny & NFS4_SHARE_ACCESS_WRITE ? "w" : "-");
- nfs4_show_superblock(s, file);
- seq_printf(s, ", ");
- nfs4_show_fname(s, file);
- seq_printf(s, ", ");
- nfs4_show_owner(s, oo);
- seq_printf(s, " }\n");
-out:
+ spin_lock(&nf->fi_lock);
+ file = find_any_file_locked(nf);
+ if (file) {
+ nfs4_show_superblock(s, file);
+ seq_puts(s, ", ");
+ nfs4_show_fname(s, file);
+ seq_puts(s, ", ");
+ }
spin_unlock(&nf->fi_lock);
+ nfs4_show_owner(s, oo);
+ if (st->sc_status & SC_STATUS_ADMIN_REVOKED)
+ seq_puts(s, ", admin-revoked");
+ seq_puts(s, " }\n");
return 0;
}
ols = openlockstateid(st);
oo = ols->st_stateowner;
nf = st->sc_file;
- spin_lock(&nf->fi_lock);
- file = find_any_file_locked(nf);
- if (!file)
- goto out;
- seq_printf(s, "- ");
+ seq_puts(s, "- ");
nfs4_show_stateid(s, &st->sc_stateid);
- seq_printf(s, ": { type: lock, ");
+ seq_puts(s, ": { type: lock, ");
- /*
- * Note: a lock stateid isn't really the same thing as a lock,
- * it's the locking state held by one owner on a file, and there
- * may be multiple (or no) lock ranges associated with it.
- * (Same for the matter is true of open stateids.)
- */
+ spin_lock(&nf->fi_lock);
+ file = find_any_file_locked(nf);
+ if (file) {
+ /*
+ * Note: a lock stateid isn't really the same thing as a lock,
+ * it's the locking state held by one owner on a file, and there
+ * may be multiple (or no) lock ranges associated with it.
+ * (Same for the matter is true of open stateids.)
+ */
- nfs4_show_superblock(s, file);
- /* XXX: open stateid? */
- seq_printf(s, ", ");
- nfs4_show_fname(s, file);
- seq_printf(s, ", ");
+ nfs4_show_superblock(s, file);
+ /* XXX: open stateid? */
+ seq_puts(s, ", ");
+ nfs4_show_fname(s, file);
+ seq_puts(s, ", ");
+ }
nfs4_show_owner(s, oo);
- seq_printf(s, " }\n");
-out:
+ if (st->sc_status & SC_STATUS_ADMIN_REVOKED)
+ seq_puts(s, ", admin-revoked");
+ seq_puts(s, " }\n");
spin_unlock(&nf->fi_lock);
return 0;
}
ds = delegstateid(st);
nf = st->sc_file;
- spin_lock(&nf->fi_lock);
- file = nf->fi_deleg_file;
- if (!file)
- goto out;
- seq_printf(s, "- ");
+ seq_puts(s, "- ");
nfs4_show_stateid(s, &st->sc_stateid);
- seq_printf(s, ": { type: deleg, ");
+ seq_puts(s, ": { type: deleg, ");
- /* Kinda dead code as long as we only support read delegs: */
- seq_printf(s, "access: %s, ",
- ds->dl_type == NFS4_OPEN_DELEGATE_READ ? "r" : "w");
+ seq_printf(s, "access: %s",
+ ds->dl_type == NFS4_OPEN_DELEGATE_READ ? "r" : "w");
/* XXX: lease time, whether it's being recalled. */
- nfs4_show_superblock(s, file);
- seq_printf(s, ", ");
- nfs4_show_fname(s, file);
- seq_printf(s, " }\n");
-out:
+ spin_lock(&nf->fi_lock);
+ file = nf->fi_deleg_file;
+ if (file) {
+ seq_puts(s, ", ");
+ nfs4_show_superblock(s, file);
+ seq_puts(s, ", ");
+ nfs4_show_fname(s, file);
+ }
spin_unlock(&nf->fi_lock);
+ if (st->sc_status & SC_STATUS_ADMIN_REVOKED)
+ seq_puts(s, ", admin-revoked");
+ seq_puts(s, " }\n");
return 0;
}
struct nfsd_file *file;
ls = container_of(st, struct nfs4_layout_stateid, ls_stid);
- file = ls->ls_file;
- seq_printf(s, "- ");
+ seq_puts(s, "- ");
nfs4_show_stateid(s, &st->sc_stateid);
- seq_printf(s, ": { type: layout, ");
+ seq_puts(s, ": { type: layout");
/* XXX: What else would be useful? */
- nfs4_show_superblock(s, file);
- seq_printf(s, ", ");
- nfs4_show_fname(s, file);
- seq_printf(s, " }\n");
+ spin_lock(&ls->ls_stid.sc_file->fi_lock);
+ file = ls->ls_file;
+ if (file) {
+ seq_puts(s, ", ");
+ nfs4_show_superblock(s, file);
+ seq_puts(s, ", ");
+ nfs4_show_fname(s, file);
+ }
+ spin_unlock(&ls->ls_stid.sc_file->fi_lock);
+ if (st->sc_status & SC_STATUS_ADMIN_REVOKED)
+ seq_puts(s, ", admin-revoked");
+ seq_puts(s, " }\n");
return 0;
}
struct nfs4_stid *st = v;
switch (st->sc_type) {
- case NFS4_OPEN_STID:
+ case SC_TYPE_OPEN:
return nfs4_show_open(s, st);
- case NFS4_LOCK_STID:
+ case SC_TYPE_LOCK:
return nfs4_show_lock(s, st);
- case NFS4_DELEG_STID:
+ case SC_TYPE_DELEG:
return nfs4_show_deleg(s, st);
- case NFS4_LAYOUT_STID:
+ case SC_TYPE_LAYOUT:
return nfs4_show_layout(s, st);
default:
return 0; /* XXX: or SEQ_SKIP? */
spin_unlock(&nn->client_lock);
}
+static int
+nfsd4_cb_getattr_done(struct nfsd4_callback *cb, struct rpc_task *task)
+{
+ struct nfs4_cb_fattr *ncf =
+ container_of(cb, struct nfs4_cb_fattr, ncf_getattr);
+
+ ncf->ncf_cb_status = task->tk_status;
+ switch (task->tk_status) {
+ case -NFS4ERR_DELAY:
+ rpc_delay(task, 2 * HZ);
+ return 0;
+ default:
+ return 1;
+ }
+}
+
+static void
+nfsd4_cb_getattr_release(struct nfsd4_callback *cb)
+{
+ struct nfs4_cb_fattr *ncf =
+ container_of(cb, struct nfs4_cb_fattr, ncf_getattr);
+ struct nfs4_delegation *dp =
+ container_of(ncf, struct nfs4_delegation, dl_cb_fattr);
+
+ nfs4_put_stid(&dp->dl_stid);
+ clear_bit(CB_GETATTR_BUSY, &ncf->ncf_cb_flags);
+ wake_up_bit(&ncf->ncf_cb_flags, CB_GETATTR_BUSY);
+}
+
static const struct nfsd4_callback_ops nfsd4_cb_recall_any_ops = {
.done = nfsd4_cb_recall_any_done,
.release = nfsd4_cb_recall_any_release,
};
+static const struct nfsd4_callback_ops nfsd4_cb_getattr_ops = {
+ .done = nfsd4_cb_getattr_done,
+ .release = nfsd4_cb_getattr_release,
+};
+
+static void nfs4_cb_getattr(struct nfs4_cb_fattr *ncf)
+{
+ struct nfs4_delegation *dp =
+ container_of(ncf, struct nfs4_delegation, dl_cb_fattr);
+
+ if (test_and_set_bit(CB_GETATTR_BUSY, &ncf->ncf_cb_flags))
+ return;
+ /* set to proper status when nfsd4_cb_getattr_done runs */
+ ncf->ncf_cb_status = NFS4ERR_IO;
+
+ refcount_inc(&dp->dl_stid.sc_count);
+ nfsd4_run_cb(&ncf->ncf_getattr);
+}
+
static struct nfs4_client *create_client(struct xdr_netobj name,
struct svc_rqst *rqstp, nfs4_verifier *verf)
{
new->cl_spo_must_allow.u.words[0] = exid->spo_must_allow[0];
new->cl_spo_must_allow.u.words[1] = exid->spo_must_allow[1];
+ /* Contrived initial CREATE_SESSION response */
+ new->cl_cs_slot.sl_status = nfserr_seq_misordered;
+
add_to_unconfirmed(new);
swap(new, conf);
out_copy:
struct nfsd4_create_session *cr_ses = &u->create_session;
struct sockaddr *sa = svc_addr(rqstp);
struct nfs4_client *conf, *unconf;
+ struct nfsd4_clid_slot *cs_slot;
struct nfs4_client *old = NULL;
struct nfsd4_session *new;
struct nfsd4_conn *conn;
- struct nfsd4_clid_slot *cs_slot = NULL;
__be32 status = 0;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
goto out_free_session;
spin_lock(&nn->client_lock);
+
+ /* RFC 8881 Section 18.36.4 Phase 1: Client record look-up. */
unconf = find_unconfirmed_client(&cr_ses->clientid, true, nn);
conf = find_confirmed_client(&cr_ses->clientid, true, nn);
- WARN_ON_ONCE(conf && unconf);
+ if (!conf && !unconf) {
+ status = nfserr_stale_clientid;
+ goto out_free_conn;
+ }
+
+ /* RFC 8881 Section 18.36.4 Phase 2: Sequence ID processing. */
+ if (conf)
+ cs_slot = &conf->cl_cs_slot;
+ else
+ cs_slot = &unconf->cl_cs_slot;
+ status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
+ switch (status) {
+ case nfs_ok:
+ cs_slot->sl_seqid++;
+ cr_ses->seqid = cs_slot->sl_seqid;
+ break;
+ case nfserr_replay_cache:
+ status = nfsd4_replay_create_session(cr_ses, cs_slot);
+ fallthrough;
+ case nfserr_jukebox:
+ /* The server MUST NOT cache NFS4ERR_DELAY */
+ goto out_free_conn;
+ default:
+ goto out_cache_error;
+ }
+ /* RFC 8881 Section 18.36.4 Phase 3: Client ID confirmation. */
if (conf) {
status = nfserr_wrong_cred;
if (!nfsd4_mach_creds_match(conf, rqstp))
- goto out_free_conn;
- cs_slot = &conf->cl_cs_slot;
- status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
- if (status) {
- if (status == nfserr_replay_cache)
- status = nfsd4_replay_create_session(cr_ses, cs_slot);
- goto out_free_conn;
- }
- } else if (unconf) {
+ goto out_cache_error;
+ } else {
status = nfserr_clid_inuse;
if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) ||
!rpc_cmp_addr(sa, (struct sockaddr *) &unconf->cl_addr)) {
trace_nfsd_clid_cred_mismatch(unconf, rqstp);
- goto out_free_conn;
+ goto out_cache_error;
}
status = nfserr_wrong_cred;
if (!nfsd4_mach_creds_match(unconf, rqstp))
- goto out_free_conn;
- cs_slot = &unconf->cl_cs_slot;
- status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
- if (status) {
- /* an unconfirmed replay returns misordered */
- status = nfserr_seq_misordered;
- goto out_free_conn;
- }
+ goto out_cache_error;
old = find_confirmed_client_by_name(&unconf->cl_name, nn);
if (old) {
status = mark_client_expired_locked(old);
- if (status) {
- old = NULL;
- goto out_free_conn;
- }
+ if (status)
+ goto out_expired_error;
trace_nfsd_clid_replaced(&old->cl_clientid);
}
move_to_confirmed(unconf);
conf = unconf;
- } else {
- status = nfserr_stale_clientid;
- goto out_free_conn;
}
+
+ /* RFC 8881 Section 18.36.4 Phase 4: Session creation. */
status = nfs_ok;
/* Persistent sessions are not supported */
cr_ses->flags &= ~SESSION4_PERSIST;
memcpy(cr_ses->sessionid.data, new->se_sessionid.data,
NFS4_MAX_SESSIONID_LEN);
- cs_slot->sl_seqid++;
- cr_ses->seqid = cs_slot->sl_seqid;
/* cache solo and embedded create sessions under the client_lock */
nfsd4_cache_create_session(cr_ses, cs_slot, status);
if (old)
expire_client(old);
return status;
+
+out_expired_error:
+ old = NULL;
+ /*
+ * Revert the slot seq_nr change so the server will process
+ * the client's resend instead of returning a cached response.
+ */
+ if (status == nfserr_jukebox) {
+ cs_slot->sl_seqid--;
+ cr_ses->seqid = cs_slot->sl_seqid;
+ goto out_free_conn;
+ }
+out_cache_error:
+ nfsd4_cache_create_session(cr_ses, cs_slot, status);
out_free_conn:
spin_unlock(&nn->client_lock);
free_conn(conn);
}
if (!list_empty(&clp->cl_revoked))
seq->status_flags |= SEQ4_STATUS_RECALLABLE_STATE_REVOKED;
+ if (atomic_read(&clp->cl_admin_revoked))
+ seq->status_flags |= SEQ4_STATUS_ADMIN_STATE_REVOKED;
+ trace_nfsd_seq4_status(rqstp, seq);
out_no_session:
if (conn)
free_conn(conn);
int
nfsd4_init_slabs(void)
{
- client_slab = kmem_cache_create("nfsd4_clients",
- sizeof(struct nfs4_client), 0, 0, NULL);
+ client_slab = KMEM_CACHE(nfs4_client, 0);
if (client_slab == NULL)
goto out;
- openowner_slab = kmem_cache_create("nfsd4_openowners",
- sizeof(struct nfs4_openowner), 0, 0, NULL);
+ openowner_slab = KMEM_CACHE(nfs4_openowner, 0);
if (openowner_slab == NULL)
goto out_free_client_slab;
- lockowner_slab = kmem_cache_create("nfsd4_lockowners",
- sizeof(struct nfs4_lockowner), 0, 0, NULL);
+ lockowner_slab = KMEM_CACHE(nfs4_lockowner, 0);
if (lockowner_slab == NULL)
goto out_free_openowner_slab;
- file_slab = kmem_cache_create("nfsd4_files",
- sizeof(struct nfs4_file), 0, 0, NULL);
+ file_slab = KMEM_CACHE(nfs4_file, 0);
if (file_slab == NULL)
goto out_free_lockowner_slab;
- stateid_slab = kmem_cache_create("nfsd4_stateids",
- sizeof(struct nfs4_ol_stateid), 0, 0, NULL);
+ stateid_slab = KMEM_CACHE(nfs4_ol_stateid, 0);
if (stateid_slab == NULL)
goto out_free_file_slab;
- deleg_slab = kmem_cache_create("nfsd4_delegations",
- sizeof(struct nfs4_delegation), 0, 0, NULL);
+ deleg_slab = KMEM_CACHE(nfs4_delegation, 0);
if (deleg_slab == NULL)
goto out_free_stateid_slab;
- odstate_slab = kmem_cache_create("nfsd4_odstate",
- sizeof(struct nfs4_clnt_odstate), 0, 0, NULL);
+ odstate_slab = KMEM_CACHE(nfs4_clnt_odstate, 0);
if (odstate_slab == NULL)
goto out_free_deleg_slab;
return 0;
continue;
if (local->st_stateowner != &oo->oo_owner)
continue;
- if (local->st_stid.sc_type == NFS4_OPEN_STID) {
+ if (local->st_stid.sc_type == SC_TYPE_OPEN &&
+ !local->st_stid.sc_status) {
ret = local;
refcount_inc(&ret->st_stid.sc_count);
break;
return ret;
}
-static __be32
-nfsd4_verify_open_stid(struct nfs4_stid *s)
+static void nfsd4_drop_revoked_stid(struct nfs4_stid *s)
+ __releases(&s->sc_client->cl_lock)
{
- __be32 ret = nfs_ok;
+ struct nfs4_client *cl = s->sc_client;
+ LIST_HEAD(reaplist);
+ struct nfs4_ol_stateid *stp;
+ struct nfs4_delegation *dp;
+ bool unhashed;
switch (s->sc_type) {
- default:
+ case SC_TYPE_OPEN:
+ stp = openlockstateid(s);
+ if (unhash_open_stateid(stp, &reaplist))
+ put_ol_stateid_locked(stp, &reaplist);
+ spin_unlock(&cl->cl_lock);
+ free_ol_stateid_reaplist(&reaplist);
break;
- case 0:
- case NFS4_CLOSED_STID:
- case NFS4_CLOSED_DELEG_STID:
- ret = nfserr_bad_stateid;
+ case SC_TYPE_LOCK:
+ stp = openlockstateid(s);
+ unhashed = unhash_lock_stateid(stp);
+ spin_unlock(&cl->cl_lock);
+ if (unhashed)
+ nfs4_put_stid(s);
break;
- case NFS4_REVOKED_DELEG_STID:
- ret = nfserr_deleg_revoked;
+ case SC_TYPE_DELEG:
+ dp = delegstateid(s);
+ list_del_init(&dp->dl_recall_lru);
+ spin_unlock(&cl->cl_lock);
+ nfs4_put_stid(s);
+ break;
+ default:
+ spin_unlock(&cl->cl_lock);
}
+}
+
+static void nfsd40_drop_revoked_stid(struct nfs4_client *cl,
+ stateid_t *stid)
+{
+ /* NFSv4.0 has no way for the client to tell the server
+ * that it can forget an admin-revoked stateid.
+ * So we keep it around until the first time that the
+ * client uses it, and drop it the first time
+ * nfserr_admin_revoked is returned.
+ * For v4.1 and later we wait until explicitly told
+ * to free the stateid.
+ */
+ if (cl->cl_minorversion == 0) {
+ struct nfs4_stid *st;
+
+ spin_lock(&cl->cl_lock);
+ st = find_stateid_locked(cl, stid);
+ if (st)
+ nfsd4_drop_revoked_stid(st);
+ else
+ spin_unlock(&cl->cl_lock);
+ }
+}
+
+static __be32
+nfsd4_verify_open_stid(struct nfs4_stid *s)
+{
+ __be32 ret = nfs_ok;
+
+ if (s->sc_status & SC_STATUS_ADMIN_REVOKED)
+ ret = nfserr_admin_revoked;
+ else if (s->sc_status & SC_STATUS_REVOKED)
+ ret = nfserr_deleg_revoked;
+ else if (s->sc_status & SC_STATUS_CLOSED)
+ ret = nfserr_bad_stateid;
return ret;
}
mutex_lock_nested(&stp->st_mutex, LOCK_STATEID_MUTEX);
ret = nfsd4_verify_open_stid(&stp->st_stid);
+ if (ret == nfserr_admin_revoked)
+ nfsd40_drop_revoked_stid(stp->st_stid.sc_client,
+ &stp->st_stid.sc_stateid);
+
if (ret != nfs_ok)
mutex_unlock(&stp->st_mutex);
return ret;
open->op_stp = NULL;
refcount_inc(&stp->st_stid.sc_count);
- stp->st_stid.sc_type = NFS4_OPEN_STID;
+ stp->st_stid.sc_type = SC_TYPE_OPEN;
INIT_LIST_HEAD(&stp->st_locks);
stp->st_stateowner = nfs4_get_stateowner(&oo->oo_owner);
get_nfs4_file(fp);
trace_nfsd_cb_recall_done(&dp->dl_stid.sc_stateid, task);
- if (dp->dl_stid.sc_type == NFS4_CLOSED_DELEG_STID ||
- dp->dl_stid.sc_type == NFS4_REVOKED_DELEG_STID)
- return 1;
+ if (dp->dl_stid.sc_status)
+ /* CLOSED or REVOKED */
+ return 1;
switch (task->tk_status) {
case 0:
/* Called from break_lease() with flc_lock held. */
static bool
-nfsd_break_deleg_cb(struct file_lock *fl)
+nfsd_break_deleg_cb(struct file_lease *fl)
{
- struct nfs4_delegation *dp = (struct nfs4_delegation *)fl->fl_owner;
+ struct nfs4_delegation *dp = (struct nfs4_delegation *) fl->c.flc_owner;
struct nfs4_file *fp = dp->dl_stid.sc_file;
struct nfs4_client *clp = dp->dl_stid.sc_client;
struct nfsd_net *nn;
* %true: Lease conflict was resolved
* %false: Lease conflict was not resolved.
*/
-static bool nfsd_breaker_owns_lease(struct file_lock *fl)
+static bool nfsd_breaker_owns_lease(struct file_lease *fl)
{
- struct nfs4_delegation *dl = fl->fl_owner;
+ struct nfs4_delegation *dl = fl->c.flc_owner;
struct svc_rqst *rqst;
struct nfs4_client *clp;
}
static int
-nfsd_change_deleg_cb(struct file_lock *onlist, int arg,
+nfsd_change_deleg_cb(struct file_lease *onlist, int arg,
struct list_head *dispose)
{
- struct nfs4_delegation *dp = (struct nfs4_delegation *)onlist->fl_owner;
+ struct nfs4_delegation *dp = (struct nfs4_delegation *) onlist->c.flc_owner;
struct nfs4_client *clp = dp->dl_stid.sc_client;
if (arg & F_UNLCK) {
return -EAGAIN;
}
-static const struct lock_manager_operations nfsd_lease_mng_ops = {
+static const struct lease_manager_operations nfsd_lease_mng_ops = {
.lm_breaker_owns_lease = nfsd_breaker_owns_lease,
.lm_break = nfsd_break_deleg_cb,
.lm_change = nfsd_change_deleg_cb,
return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
}
-static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl, stateid_t *s)
+static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl,
+ stateid_t *s)
{
struct nfs4_stid *ret;
- ret = find_stateid_by_type(cl, s,
- NFS4_DELEG_STID|NFS4_REVOKED_DELEG_STID);
+ ret = find_stateid_by_type(cl, s, SC_TYPE_DELEG, SC_STATUS_REVOKED);
if (!ret)
return NULL;
return delegstateid(ret);
deleg = find_deleg_stateid(cl, &open->op_delegate_stateid);
if (deleg == NULL)
goto out;
- if (deleg->dl_stid.sc_type == NFS4_REVOKED_DELEG_STID) {
+ if (deleg->dl_stid.sc_status & SC_STATUS_ADMIN_REVOKED) {
nfs4_put_stid(&deleg->dl_stid);
- if (cl->cl_minorversion)
- status = nfserr_deleg_revoked;
+ status = nfserr_admin_revoked;
+ goto out;
+ }
+ if (deleg->dl_stid.sc_status & SC_STATUS_REVOKED) {
+ nfs4_put_stid(&deleg->dl_stid);
+ nfsd40_drop_revoked_stid(cl, &open->op_delegate_stateid);
+ status = nfserr_deleg_revoked;
goto out;
}
flags = share_access_to_flags(open->op_share_access);
return 0;
if (!(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
return nfserr_inval;
- return nfsd_setattr(rqstp, fh, &attrs, 0, (time64_t)0);
+ return nfsd_setattr(rqstp, fh, &attrs, NULL);
}
static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
return clp->cl_minorversion && clp->cl_cb_state == NFSD4_CB_UNKNOWN;
}
-static struct file_lock *nfs4_alloc_init_lease(struct nfs4_delegation *dp,
+static struct file_lease *nfs4_alloc_init_lease(struct nfs4_delegation *dp,
int flag)
{
- struct file_lock *fl;
+ struct file_lease *fl;
- fl = locks_alloc_lock();
+ fl = locks_alloc_lease();
if (!fl)
return NULL;
fl->fl_lmops = &nfsd_lease_mng_ops;
- fl->fl_flags = FL_DELEG;
- fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
- fl->fl_end = OFFSET_MAX;
- fl->fl_owner = (fl_owner_t)dp;
- fl->fl_pid = current->tgid;
- fl->fl_file = dp->dl_stid.sc_file->fi_deleg_file->nf_file;
+ fl->c.flc_flags = FL_DELEG;
+ fl->c.flc_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
+ fl->c.flc_owner = (fl_owner_t)dp;
+ fl->c.flc_pid = current->tgid;
+ fl->c.flc_file = dp->dl_stid.sc_file->fi_deleg_file->nf_file;
return fl;
}
struct nfs4_clnt_odstate *odstate = stp->st_clnt_odstate;
struct nfs4_delegation *dp;
struct nfsd_file *nf = NULL;
- struct file_lock *fl;
+ struct file_lease *fl;
u32 dl_type;
/*
if (!fl)
goto out_clnt_odstate;
- status = vfs_setlease(fp->fi_deleg_file->nf_file, fl->fl_type, &fl, NULL);
+ status = kernel_setlease(fp->fi_deleg_file->nf_file,
+ fl->c.flc_type, &fl, NULL);
if (fl)
- locks_free_lock(fl);
+ locks_free_lease(fl);
if (status)
goto out_clnt_odstate;
goto out_unlock;
spin_lock(&state_lock);
+ spin_lock(&clp->cl_lock);
spin_lock(&fp->fi_lock);
status = hash_delegation_locked(dp, fp);
spin_unlock(&fp->fi_lock);
+ spin_unlock(&clp->cl_lock);
spin_unlock(&state_lock);
if (status)
return dp;
out_unlock:
- vfs_setlease(fp->fi_deleg_file->nf_file, F_UNLCK, NULL, (void **)&dp);
+ kernel_setlease(fp->fi_deleg_file->nf_file, F_UNLCK, NULL, (void **)&dp);
out_clnt_odstate:
put_clnt_odstate(dp->dl_clnt_odstate);
nfs4_put_stid(&dp->dl_stid);
struct svc_fh *parent = NULL;
int cb_up;
int status = 0;
+ struct kstat stat;
+ struct path path;
cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client);
open->op_recall = false;
if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) {
open->op_delegate_type = NFS4_OPEN_DELEGATE_WRITE;
trace_nfsd_deleg_write(&dp->dl_stid.sc_stateid);
+ path.mnt = currentfh->fh_export->ex_path.mnt;
+ path.dentry = currentfh->fh_dentry;
+ if (vfs_getattr(&path, &stat,
+ (STATX_SIZE | STATX_CTIME | STATX_CHANGE_COOKIE),
+ AT_STATX_SYNC_AS_STAT)) {
+ nfs4_put_stid(&dp->dl_stid);
+ destroy_delegation(dp);
+ goto out_no_deleg;
+ }
+ dp->dl_cb_fattr.ncf_cur_fsize = stat.size;
+ dp->dl_cb_fattr.ncf_initial_cinfo =
+ nfsd4_change_attribute(&stat, d_inode(currentfh->fh_dentry));
} else {
open->op_delegate_type = NFS4_OPEN_DELEGATE_READ;
trace_nfsd_deleg_read(&dp->dl_stid.sc_stateid);
} else {
status = nfs4_get_vfs_file(rqstp, fp, current_fh, stp, open, true);
if (status) {
- stp->st_stid.sc_type = NFS4_CLOSED_STID;
release_open_stateid(stp);
mutex_unlock(&stp->st_mutex);
goto out;
}
}
+static void nfs40_clean_admin_revoked(struct nfsd_net *nn,
+ struct laundry_time *lt)
+{
+ struct nfs4_client *clp;
+
+ spin_lock(&nn->client_lock);
+ if (nn->nfs40_last_revoke == 0 ||
+ nn->nfs40_last_revoke > lt->cutoff) {
+ spin_unlock(&nn->client_lock);
+ return;
+ }
+ nn->nfs40_last_revoke = 0;
+
+retry:
+ list_for_each_entry(clp, &nn->client_lru, cl_lru) {
+ unsigned long id, tmp;
+ struct nfs4_stid *stid;
+
+ if (atomic_read(&clp->cl_admin_revoked) == 0)
+ continue;
+
+ spin_lock(&clp->cl_lock);
+ idr_for_each_entry_ul(&clp->cl_stateids, stid, tmp, id)
+ if (stid->sc_status & SC_STATUS_ADMIN_REVOKED) {
+ refcount_inc(&stid->sc_count);
+ spin_unlock(&nn->client_lock);
+ /* this function drops ->cl_lock */
+ nfsd4_drop_revoked_stid(stid);
+ nfs4_put_stid(stid);
+ spin_lock(&nn->client_lock);
+ goto retry;
+ }
+ spin_unlock(&clp->cl_lock);
+ }
+ spin_unlock(&nn->client_lock);
+}
+
static time64_t
nfs4_laundromat(struct nfsd_net *nn)
{
nfs4_get_client_reaplist(nn, &reaplist, <);
nfs4_process_client_reaplist(&reaplist);
+ nfs40_clean_admin_revoked(nn, <);
+
spin_lock(&state_lock);
list_for_each_safe(pos, next, &nn->del_recall_lru) {
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
if (!state_expired(<, dp->dl_time))
break;
- WARN_ON(!unhash_delegation_locked(dp));
+ unhash_delegation_locked(dp, SC_STATUS_REVOKED);
list_add(&dp->dl_recall_lru, &reaplist);
}
spin_unlock(&state_lock);
/* service the server-to-server copy delayed unmount list */
nfsd4_ssc_expire_umount(nn);
#endif
+ if (atomic_long_read(&num_delegations) >= max_delegations)
+ deleg_reaper(nn);
out:
return max_t(time64_t, lt.new_timeo, NFSD_LAUNDROMAT_MINTIMEOUT);
}
list_del_init(&clp->cl_ra_cblist);
clp->cl_ra->ra_keep = 0;
clp->cl_ra->ra_bmval[0] = BIT(RCA4_TYPE_MASK_RDATA_DLG);
+ clp->cl_ra->ra_bmval[0] = BIT(RCA4_TYPE_MASK_RDATA_DLG) |
+ BIT(RCA4_TYPE_MASK_WDATA_DLG);
trace_nfsd_cb_recall_any(clp->cl_ra);
nfsd4_run_cb(&clp->cl_ra->ra_cb);
}
if (ret == nfs_ok)
ret = check_stateid_generation(in, &s->sc_stateid, has_session);
spin_unlock(&s->sc_lock);
+ if (ret == nfserr_admin_revoked)
+ nfsd40_drop_revoked_stid(s->sc_client,
+ &s->sc_stateid);
return ret;
}
status = nfsd4_stid_check_stateid_generation(stateid, s, 1);
if (status)
goto out_unlock;
+ status = nfsd4_verify_open_stid(s);
+ if (status)
+ goto out_unlock;
+
switch (s->sc_type) {
- case NFS4_DELEG_STID:
+ case SC_TYPE_DELEG:
status = nfs_ok;
break;
- case NFS4_REVOKED_DELEG_STID:
- status = nfserr_deleg_revoked;
- break;
- case NFS4_OPEN_STID:
- case NFS4_LOCK_STID:
+ case SC_TYPE_OPEN:
+ case SC_TYPE_LOCK:
status = nfsd4_check_openowner_confirmed(openlockstateid(s));
break;
default:
printk("unknown stateid type %x\n", s->sc_type);
- fallthrough;
- case NFS4_CLOSED_STID:
- case NFS4_CLOSED_DELEG_STID:
status = nfserr_bad_stateid;
}
out_unlock:
spin_unlock(&cl->cl_lock);
+ if (status == nfserr_admin_revoked)
+ nfsd40_drop_revoked_stid(cl, stateid);
return status;
}
__be32
nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
- stateid_t *stateid, unsigned char typemask,
+ stateid_t *stateid,
+ unsigned short typemask, unsigned short statusmask,
struct nfs4_stid **s, struct nfsd_net *nn)
{
__be32 status;
* only return revoked delegations if explicitly asked.
* otherwise we report revoked or bad_stateid status.
*/
- if (typemask & NFS4_REVOKED_DELEG_STID)
+ if (statusmask & SC_STATUS_REVOKED)
return_revoked = true;
- else if (typemask & NFS4_DELEG_STID)
- typemask |= NFS4_REVOKED_DELEG_STID;
+ if (typemask & SC_TYPE_DELEG)
+ /* Always allow REVOKED for DELEG so we can
+ * retturn the appropriate error.
+ */
+ statusmask |= SC_STATUS_REVOKED;
+
+ statusmask |= SC_STATUS_ADMIN_REVOKED;
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
CLOSE_STATEID(stateid))
}
if (status)
return status;
- stid = find_stateid_by_type(cstate->clp, stateid, typemask);
+ stid = find_stateid_by_type(cstate->clp, stateid, typemask, statusmask);
if (!stid)
return nfserr_bad_stateid;
- if ((stid->sc_type == NFS4_REVOKED_DELEG_STID) && !return_revoked) {
+ if ((stid->sc_status & SC_STATUS_REVOKED) && !return_revoked) {
nfs4_put_stid(stid);
- if (cstate->minorversion)
- return nfserr_deleg_revoked;
- return nfserr_bad_stateid;
+ return nfserr_deleg_revoked;
+ }
+ if (stid->sc_status & SC_STATUS_ADMIN_REVOKED) {
+ nfsd40_drop_revoked_stid(cstate->clp, stateid);
+ nfs4_put_stid(stid);
+ return nfserr_admin_revoked;
}
*s = stid;
return nfs_ok;
{
struct nfsd_file *ret = NULL;
- if (!s)
+ if (!s || s->sc_status)
return NULL;
switch (s->sc_type) {
- case NFS4_DELEG_STID:
+ case SC_TYPE_DELEG:
spin_lock(&s->sc_file->fi_lock);
ret = nfsd_file_get(s->sc_file->fi_deleg_file);
spin_unlock(&s->sc_file->fi_lock);
break;
- case NFS4_OPEN_STID:
- case NFS4_LOCK_STID:
+ case SC_TYPE_OPEN:
+ case SC_TYPE_LOCK:
if (flags & RD_STATE)
ret = find_readable_file(s->sc_file);
else
goto out;
*stid = find_stateid_by_type(found, &cps->cp_p_stateid,
- NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID);
+ SC_TYPE_DELEG|SC_TYPE_OPEN|SC_TYPE_LOCK,
+ 0);
if (*stid)
status = nfs_ok;
else
}
status = nfsd4_lookup_stateid(cstate, stateid,
- NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
- &s, nn);
+ SC_TYPE_DELEG|SC_TYPE_OPEN|SC_TYPE_LOCK,
+ 0, &s, nn);
if (status == nfserr_bad_stateid)
status = find_cpntf_state(nn, stateid, &s);
if (status)
goto out;
switch (s->sc_type) {
- case NFS4_DELEG_STID:
+ case SC_TYPE_DELEG:
status = nfs4_check_delegmode(delegstateid(s), flags);
break;
- case NFS4_OPEN_STID:
- case NFS4_LOCK_STID:
+ case SC_TYPE_OPEN:
+ case SC_TYPE_LOCK:
status = nfs4_check_olstateid(openlockstateid(s), flags);
break;
- default:
- status = nfserr_bad_stateid;
- break;
}
if (status)
goto out;
spin_lock(&cl->cl_lock);
s = find_stateid_locked(cl, stateid);
- if (!s)
+ if (!s || s->sc_status & SC_STATUS_CLOSED)
goto out_unlock;
+ if (s->sc_status & SC_STATUS_ADMIN_REVOKED) {
+ nfsd4_drop_revoked_stid(s);
+ ret = nfs_ok;
+ goto out;
+ }
spin_lock(&s->sc_lock);
switch (s->sc_type) {
- case NFS4_DELEG_STID:
+ case SC_TYPE_DELEG:
+ if (s->sc_status & SC_STATUS_REVOKED) {
+ spin_unlock(&s->sc_lock);
+ dp = delegstateid(s);
+ list_del_init(&dp->dl_recall_lru);
+ spin_unlock(&cl->cl_lock);
+ nfs4_put_stid(s);
+ ret = nfs_ok;
+ goto out;
+ }
ret = nfserr_locks_held;
break;
- case NFS4_OPEN_STID:
+ case SC_TYPE_OPEN:
ret = check_stateid_generation(stateid, &s->sc_stateid, 1);
if (ret)
break;
ret = nfserr_locks_held;
break;
- case NFS4_LOCK_STID:
+ case SC_TYPE_LOCK:
spin_unlock(&s->sc_lock);
refcount_inc(&s->sc_count);
spin_unlock(&cl->cl_lock);
ret = nfsd4_free_lock_stateid(stateid, s);
goto out;
- case NFS4_REVOKED_DELEG_STID:
- spin_unlock(&s->sc_lock);
- dp = delegstateid(s);
- list_del_init(&dp->dl_recall_lru);
- spin_unlock(&cl->cl_lock);
- nfs4_put_stid(s);
- ret = nfs_ok;
- goto out;
- /* Default falls through and returns nfserr_bad_stateid */
}
spin_unlock(&s->sc_lock);
out_unlock:
* @seqid: seqid (provided by client)
* @stateid: stateid (provided by client)
* @typemask: mask of allowable types for this operation
+ * @statusmask: mask of allowed states: 0 or STID_CLOSED
* @stpp: return pointer for the stateid found
* @nn: net namespace for request
*
*/
static __be32
nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
- stateid_t *stateid, char typemask,
+ stateid_t *stateid,
+ unsigned short typemask, unsigned short statusmask,
struct nfs4_ol_stateid **stpp,
struct nfsd_net *nn)
{
trace_nfsd_preprocess(seqid, stateid);
*stpp = NULL;
- status = nfsd4_lookup_stateid(cstate, stateid, typemask, &s, nn);
+ status = nfsd4_lookup_stateid(cstate, stateid,
+ typemask, statusmask, &s, nn);
if (status)
return status;
stp = openlockstateid(s);
struct nfs4_ol_stateid *stp;
status = nfs4_preprocess_seqid_op(cstate, seqid, stateid,
- NFS4_OPEN_STID, &stp, nn);
+ SC_TYPE_OPEN, 0, &stp, nn);
if (status)
return status;
oo = openowner(stp->st_stateowner);
return status;
status = nfs4_preprocess_seqid_op(cstate,
- oc->oc_seqid, &oc->oc_req_stateid,
- NFS4_OPEN_STID, &stp, nn);
+ oc->oc_seqid, &oc->oc_req_stateid,
+ SC_TYPE_OPEN, 0, &stp, nn);
if (status)
goto out;
oo = openowner(stp->st_stateowner);
struct net *net = SVC_NET(rqstp);
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
- dprintk("NFSD: nfsd4_close on file %pd\n",
+ dprintk("NFSD: nfsd4_close on file %pd\n",
cstate->current_fh.fh_dentry);
status = nfs4_preprocess_seqid_op(cstate, close->cl_seqid,
- &close->cl_stateid,
- NFS4_OPEN_STID|NFS4_CLOSED_STID,
- &stp, nn);
+ &close->cl_stateid,
+ SC_TYPE_OPEN, SC_STATUS_CLOSED,
+ &stp, nn);
nfsd4_bump_seqid(cstate, status);
if (status)
- goto out;
+ goto out;
- stp->st_stid.sc_type = NFS4_CLOSED_STID;
+ spin_lock(&stp->st_stid.sc_client->cl_lock);
+ stp->st_stid.sc_status |= SC_STATUS_CLOSED;
+ spin_unlock(&stp->st_stid.sc_client->cl_lock);
/*
* Technically we don't _really_ have to increment or copy it, since
if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
return status;
- status = nfsd4_lookup_stateid(cstate, stateid, NFS4_DELEG_STID, &s, nn);
+ status = nfsd4_lookup_stateid(cstate, stateid, SC_TYPE_DELEG, 0, &s, nn);
if (status)
goto out;
dp = delegstateid(s);
static bool
nfsd4_lm_lock_expirable(struct file_lock *cfl)
{
- struct nfs4_lockowner *lo = (struct nfs4_lockowner *)cfl->fl_owner;
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *) cfl->c.flc_owner;
struct nfs4_client *clp = lo->lo_owner.so_client;
struct nfsd_net *nn;
static void
nfsd4_lm_notify(struct file_lock *fl)
{
- struct nfs4_lockowner *lo = (struct nfs4_lockowner *)fl->fl_owner;
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *) fl->c.flc_owner;
struct net *net = lo->lo_owner.so_client->net;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd4_blocked_lock *nbl = container_of(fl,
struct nfs4_lockowner *lo;
if (fl->fl_lmops == &nfsd_posix_mng_ops) {
- lo = (struct nfs4_lockowner *) fl->fl_owner;
+ lo = (struct nfs4_lockowner *) fl->c.flc_owner;
xdr_netobj_dup(&deny->ld_owner, &lo->lo_owner.so_owner,
GFP_KERNEL);
if (!deny->ld_owner.data)
if (fl->fl_end != NFS4_MAX_UINT64)
deny->ld_length = fl->fl_end - fl->fl_start + 1;
deny->ld_type = NFS4_READ_LT;
- if (fl->fl_type != F_RDLCK)
+ if (fl->c.flc_type != F_RDLCK)
deny->ld_type = NFS4_WRITE_LT;
}
if (retstp)
goto out_found;
refcount_inc(&stp->st_stid.sc_count);
- stp->st_stid.sc_type = NFS4_LOCK_STID;
+ stp->st_stid.sc_type = SC_TYPE_LOCK;
stp->st_stateowner = nfs4_get_stateowner(&lo->lo_owner);
get_nfs4_file(fp);
stp->st_stid.sc_file = fp;
int lkflg;
int err;
bool new = false;
- unsigned char fl_type;
- unsigned int fl_flags = FL_POSIX;
+ unsigned char type;
+ unsigned int flags = FL_POSIX;
struct net *net = SVC_NET(rqstp);
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
&lock_stp, &new);
} else {
status = nfs4_preprocess_seqid_op(cstate,
- lock->lk_old_lock_seqid,
- &lock->lk_old_lock_stateid,
- NFS4_LOCK_STID, &lock_stp, nn);
+ lock->lk_old_lock_seqid,
+ &lock->lk_old_lock_stateid,
+ SC_TYPE_LOCK, 0, &lock_stp,
+ nn);
}
if (status)
goto out;
goto out;
if (lock->lk_reclaim)
- fl_flags |= FL_RECLAIM;
+ flags |= FL_RECLAIM;
fp = lock_stp->st_stid.sc_file;
switch (lock->lk_type) {
case NFS4_READW_LT:
if (nfsd4_has_session(cstate) ||
exportfs_lock_op_is_async(sb->s_export_op))
- fl_flags |= FL_SLEEP;
+ flags |= FL_SLEEP;
fallthrough;
case NFS4_READ_LT:
spin_lock(&fp->fi_lock);
if (nf)
get_lock_access(lock_stp, NFS4_SHARE_ACCESS_READ);
spin_unlock(&fp->fi_lock);
- fl_type = F_RDLCK;
+ type = F_RDLCK;
break;
case NFS4_WRITEW_LT:
if (nfsd4_has_session(cstate) ||
exportfs_lock_op_is_async(sb->s_export_op))
- fl_flags |= FL_SLEEP;
+ flags |= FL_SLEEP;
fallthrough;
case NFS4_WRITE_LT:
spin_lock(&fp->fi_lock);
if (nf)
get_lock_access(lock_stp, NFS4_SHARE_ACCESS_WRITE);
spin_unlock(&fp->fi_lock);
- fl_type = F_WRLCK;
+ type = F_WRLCK;
break;
default:
status = nfserr_inval;
* on those filesystems:
*/
if (!exportfs_lock_op_is_async(sb->s_export_op))
- fl_flags &= ~FL_SLEEP;
+ flags &= ~FL_SLEEP;
nbl = find_or_allocate_block(lock_sop, &fp->fi_fhandle, nn);
if (!nbl) {
}
file_lock = &nbl->nbl_lock;
- file_lock->fl_type = fl_type;
- file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
- file_lock->fl_pid = current->tgid;
- file_lock->fl_file = nf->nf_file;
- file_lock->fl_flags = fl_flags;
+ file_lock->c.flc_type = type;
+ file_lock->c.flc_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
+ file_lock->c.flc_pid = current->tgid;
+ file_lock->c.flc_file = nf->nf_file;
+ file_lock->c.flc_flags = flags;
file_lock->fl_lmops = &nfsd_posix_mng_ops;
file_lock->fl_start = lock->lk_offset;
file_lock->fl_end = last_byte_offset(lock->lk_offset, lock->lk_length);
goto out;
}
- if (fl_flags & FL_SLEEP) {
+ if (flags & FL_SLEEP) {
nbl->nbl_time = ktime_get_boottime_seconds();
spin_lock(&nn->blocked_locks_lock);
list_add_tail(&nbl->nbl_list, &lock_sop->lo_blocked);
out:
if (nbl) {
/* dequeue it if we queued it before */
- if (fl_flags & FL_SLEEP) {
+ if (flags & FL_SLEEP) {
spin_lock(&nn->blocked_locks_lock);
if (!list_empty(&nbl->nbl_list) &&
!list_empty(&nbl->nbl_lru)) {
err = nfserrno(nfsd_open_break_lease(inode, NFSD_MAY_READ));
if (err)
goto out;
- lock->fl_file = nf->nf_file;
+ lock->c.flc_file = nf->nf_file;
err = nfserrno(vfs_test_lock(nf->nf_file, lock));
- lock->fl_file = NULL;
+ lock->c.flc_file = NULL;
out:
inode_unlock(inode);
nfsd_file_put(nf);
switch (lockt->lt_type) {
case NFS4_READ_LT:
case NFS4_READW_LT:
- file_lock->fl_type = F_RDLCK;
+ file_lock->c.flc_type = F_RDLCK;
break;
case NFS4_WRITE_LT:
case NFS4_WRITEW_LT:
- file_lock->fl_type = F_WRLCK;
+ file_lock->c.flc_type = F_WRLCK;
break;
default:
dprintk("NFSD: nfs4_lockt: bad lock type!\n");
lo = find_lockowner_str(cstate->clp, &lockt->lt_owner);
if (lo)
- file_lock->fl_owner = (fl_owner_t)lo;
- file_lock->fl_pid = current->tgid;
- file_lock->fl_flags = FL_POSIX;
+ file_lock->c.flc_owner = (fl_owner_t)lo;
+ file_lock->c.flc_pid = current->tgid;
+ file_lock->c.flc_flags = FL_POSIX;
file_lock->fl_start = lockt->lt_offset;
file_lock->fl_end = last_byte_offset(lockt->lt_offset, lockt->lt_length);
if (status)
goto out;
- if (file_lock->fl_type != F_UNLCK) {
+ if (file_lock->c.flc_type != F_UNLCK) {
status = nfserr_denied;
nfs4_set_lock_denied(file_lock, &lockt->lt_denied);
}
return nfserr_inval;
status = nfs4_preprocess_seqid_op(cstate, locku->lu_seqid,
- &locku->lu_stateid, NFS4_LOCK_STID,
- &stp, nn);
+ &locku->lu_stateid, SC_TYPE_LOCK, 0,
+ &stp, nn);
if (status)
goto out;
nf = find_any_file(stp->st_stid.sc_file);
goto put_file;
}
- file_lock->fl_type = F_UNLCK;
- file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner));
- file_lock->fl_pid = current->tgid;
- file_lock->fl_file = nf->nf_file;
- file_lock->fl_flags = FL_POSIX;
+ file_lock->c.flc_type = F_UNLCK;
+ file_lock->c.flc_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner));
+ file_lock->c.flc_pid = current->tgid;
+ file_lock->c.flc_file = nf->nf_file;
+ file_lock->c.flc_flags = FL_POSIX;
file_lock->fl_lmops = &nfsd_posix_mng_ops;
file_lock->fl_start = locku->lu_offset;
if (flctx && !list_empty_careful(&flctx->flc_posix)) {
spin_lock(&flctx->flc_lock);
- list_for_each_entry(fl, &flctx->flc_posix, fl_list) {
- if (fl->fl_owner == (fl_owner_t)lowner) {
+ for_each_file_lock(fl, &flctx->flc_posix) {
+ if (fl->c.flc_owner == (fl_owner_t)lowner) {
status = true;
break;
}
stp = list_first_entry(&lo->lo_owner.so_stateids,
struct nfs4_ol_stateid,
st_perstateowner);
- WARN_ON(!unhash_lock_stateid(stp));
+ unhash_lock_stateid(stp);
put_ol_stateid_locked(stp, &reaplist);
}
spin_unlock(&clp->cl_lock);
spin_lock(&state_lock);
list_for_each_safe(pos, next, &nn->del_recall_lru) {
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
- WARN_ON(!unhash_delegation_locked(dp));
+ unhash_delegation_locked(dp, SC_STATUS_CLOSED);
list_add(&dp->dl_recall_lru, &reaplist);
}
spin_unlock(&state_lock);
* nfsd4_deleg_getattr_conflict - Recall if GETATTR causes conflict
* @rqstp: RPC transaction context
* @inode: file to be checked for a conflict
+ * @modified: return true if file was modified
+ * @size: new size of file if modified is true
*
* This function is called when there is a conflict between a write
* delegation and a change/size GETATTR from another client. The server
* delegation before replying to the GETATTR. See RFC 8881 section
* 18.7.4.
*
- * The current implementation does not support CB_GETATTR yet. However
- * this can avoid recalling the delegation could be added in follow up
- * work.
- *
* Returns 0 if there is no conflict; otherwise an nfs_stat
* code is returned.
*/
__be32
-nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct inode *inode)
+nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct inode *inode,
+ bool *modified, u64 *size)
{
__be32 status;
+ struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
struct file_lock_context *ctx;
- struct file_lock *fl;
+ struct file_lease *fl;
struct nfs4_delegation *dp;
+ struct iattr attrs;
+ struct nfs4_cb_fattr *ncf;
+ *modified = false;
ctx = locks_inode_context(inode);
if (!ctx)
return 0;
spin_lock(&ctx->flc_lock);
- list_for_each_entry(fl, &ctx->flc_lease, fl_list) {
- if (fl->fl_flags == FL_LAYOUT)
+ for_each_file_lock(fl, &ctx->flc_lease) {
+ unsigned char type = fl->c.flc_type;
+
+ if (fl->c.flc_flags == FL_LAYOUT)
continue;
if (fl->fl_lmops != &nfsd_lease_mng_ops) {
/*
* we are done; there isn't any write delegation
* on this inode
*/
- if (fl->fl_type == F_RDLCK)
+ if (type == F_RDLCK)
break;
goto break_lease;
}
- if (fl->fl_type == F_WRLCK) {
- dp = fl->fl_owner;
+ if (type == F_WRLCK) {
+ dp = fl->c.flc_owner;
if (dp->dl_recall.cb_clp == *(rqstp->rq_lease_breaker)) {
spin_unlock(&ctx->flc_lock);
return 0;
}
break_lease:
+ nfsd_stats_wdeleg_getattr_inc(nn);
+ dp = fl->c.flc_owner;
+ ncf = &dp->dl_cb_fattr;
+ nfs4_cb_getattr(&dp->dl_cb_fattr);
spin_unlock(&ctx->flc_lock);
- nfsd_stats_wdeleg_getattr_inc();
- status = nfserrno(nfsd_open_break_lease(inode, NFSD_MAY_READ));
- if (status != nfserr_jukebox ||
- !nfsd_wait_for_delegreturn(rqstp, inode))
- return status;
+ wait_on_bit_timeout(&ncf->ncf_cb_flags, CB_GETATTR_BUSY,
+ TASK_INTERRUPTIBLE, NFSD_CB_GETATTR_TIMEOUT);
+ if (ncf->ncf_cb_status) {
+ /* Recall delegation only if client didn't respond */
+ status = nfserrno(nfsd_open_break_lease(inode, NFSD_MAY_READ));
+ if (status != nfserr_jukebox ||
+ !nfsd_wait_for_delegreturn(rqstp, inode))
+ return status;
+ }
+ if (!ncf->ncf_file_modified &&
+ (ncf->ncf_initial_cinfo != ncf->ncf_cb_change ||
+ ncf->ncf_cur_fsize != ncf->ncf_cb_fsize))
+ ncf->ncf_file_modified = true;
+ if (ncf->ncf_file_modified) {
+ /*
+ * Per section 10.4.3 of RFC 8881, the server would
+ * not update the file's metadata with the client's
+ * modified size
+ */
+ attrs.ia_mtime = attrs.ia_ctime = current_time(inode);
+ attrs.ia_valid = ATTR_MTIME | ATTR_CTIME;
+ setattr_copy(&nop_mnt_idmap, inode, &attrs);
+ mark_inode_dirty(inode);
+ ncf->ncf_cur_fsize = ncf->ncf_cb_fsize;
+ *size = ncf->ncf_cur_fsize;
+ *modified = true;
+ }
return 0;
}
break;
git.samba.org / sfrench / cifs-2.6.git / blobdiff