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-rw-r--r--fs/nfsd/export.c26
-rw-r--r--fs/nfsd/export.h3
-rw-r--r--fs/nfsd/filecache.c24
-rw-r--r--fs/nfsd/filecache.h2
-rw-r--r--fs/nfsd/lockd.c13
-rw-r--r--fs/nfsd/nfs4acl.c2
-rw-r--r--fs/nfsd/nfs4callback.c139
-rw-r--r--fs/nfsd/nfs4proc.c116
-rw-r--r--fs/nfsd/nfs4recover.c3
-rw-r--r--fs/nfsd/nfs4state.c146
-rw-r--r--fs/nfsd/nfs4xdr.c71
-rw-r--r--fs/nfsd/nfsfh.c41
-rw-r--r--fs/nfsd/nfsfh.h3
-rw-r--r--fs/nfsd/state.h40
-rw-r--r--fs/nfsd/trace.h29
-rw-r--r--fs/nfsd/vfs.c26
-rw-r--r--fs/nfsd/vfs.h6
-rw-r--r--fs/nfsd/xdr4.h8
18 files changed, 472 insertions, 226 deletions
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index c82d8e3e0d4f..aa4712362b3b 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -1078,12 +1078,14 @@ static struct svc_export *exp_find(struct cache_detail *cd,
* check_nfsd_access - check if access to export is allowed.
* @exp: svc_export that is being accessed.
* @rqstp: svc_rqst attempting to access @exp (will be NULL for LOCALIO).
+ * @may_bypass_gss: reduce strictness of authorization check
*
* Return values:
* %nfs_ok if access is granted, or
* %nfserr_wrongsec if access is denied
*/
-__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp)
+__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp,
+ bool may_bypass_gss)
{
struct exp_flavor_info *f, *end = exp->ex_flavors + exp->ex_nflavors;
struct svc_xprt *xprt;
@@ -1140,6 +1142,23 @@ ok:
if (nfsd4_spo_must_allow(rqstp))
return nfs_ok;
+ /* Some calls may be processed without authentication
+ * on GSS exports. For example NFS2/3 calls on root
+ * directory, see section 2.3.2 of rfc 2623.
+ * For "may_bypass_gss" check that export has really
+ * enabled some flavor with authentication (GSS or any
+ * other) and also check that the used auth flavor is
+ * without authentication (none or sys).
+ */
+ if (may_bypass_gss && (
+ rqstp->rq_cred.cr_flavor == RPC_AUTH_NULL ||
+ rqstp->rq_cred.cr_flavor == RPC_AUTH_UNIX)) {
+ for (f = exp->ex_flavors; f < end; f++) {
+ if (f->pseudoflavor >= RPC_AUTH_DES)
+ return 0;
+ }
+ }
+
denied:
return nfserr_wrongsec;
}
@@ -1406,9 +1425,12 @@ static int e_show(struct seq_file *m, void *p)
return 0;
}
- exp_get(exp);
+ if (!cache_get_rcu(&exp->h))
+ return 0;
+
if (cache_check(cd, &exp->h, NULL))
return 0;
+
exp_put(exp);
return svc_export_show(m, cd, cp);
}
diff --git a/fs/nfsd/export.h b/fs/nfsd/export.h
index 3794ae253a70..4d92b99c1ffd 100644
--- a/fs/nfsd/export.h
+++ b/fs/nfsd/export.h
@@ -101,7 +101,8 @@ struct svc_expkey {
struct svc_cred;
int nfsexp_flags(struct svc_cred *cred, struct svc_export *exp);
-__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
+__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp,
+ bool may_bypass_gss);
/*
* Function declarations
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 2e6783f63712..a1cdba42c4fa 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -391,19 +391,19 @@ nfsd_file_put(struct nfsd_file *nf)
}
/**
- * nfsd_file_put_local - put the reference to nfsd_file and local nfsd_serv
- * @nf: nfsd_file of which to put the references
+ * nfsd_file_put_local - put nfsd_file reference and arm nfsd_serv_put in caller
+ * @nf: nfsd_file of which to put the reference
*
- * First put the reference of the nfsd_file and then put the
- * reference to the associated nn->nfsd_serv.
+ * First save the associated net to return to caller, then put
+ * the reference of the nfsd_file.
*/
-void
-nfsd_file_put_local(struct nfsd_file *nf) __must_hold(rcu)
+struct net *
+nfsd_file_put_local(struct nfsd_file *nf)
{
struct net *net = nf->nf_net;
nfsd_file_put(nf);
- nfsd_serv_put(net);
+ return net;
}
/**
@@ -487,7 +487,6 @@ void nfsd_file_net_dispose(struct nfsd_net *nn)
* nfsd_file_lru_cb - Examine an entry on the LRU list
* @item: LRU entry to examine
* @lru: controlling LRU
- * @lock: LRU list lock (unused)
* @arg: dispose list
*
* Return values:
@@ -497,9 +496,7 @@ void nfsd_file_net_dispose(struct nfsd_net *nn)
*/
static enum lru_status
nfsd_file_lru_cb(struct list_head *item, struct list_lru_one *lru,
- spinlock_t *lock, void *arg)
- __releases(lock)
- __acquires(lock)
+ void *arg)
{
struct list_head *head = arg;
struct nfsd_file *nf = list_entry(item, struct nfsd_file, nf_lru);
@@ -1050,7 +1047,7 @@ retry:
* the last one however, since we should hold another.
*/
if (nfsd_file_lru_remove(nf))
- WARN_ON_ONCE(refcount_dec_and_test(&nf->nf_ref));
+ refcount_dec(&nf->nf_ref);
goto wait_for_construction;
}
@@ -1123,8 +1120,7 @@ open_file:
status = nfs_ok;
trace_nfsd_file_opened(nf, status);
} else {
- ret = nfsd_open_verified(rqstp, fhp, may_flags,
- &nf->nf_file);
+ ret = nfsd_open_verified(fhp, may_flags, &nf->nf_file);
if (ret == -EOPENSTALE && stale_retry) {
stale_retry = false;
nfsd_file_unhash(nf);
diff --git a/fs/nfsd/filecache.h b/fs/nfsd/filecache.h
index cadf3c2689c4..d5db6b34ba30 100644
--- a/fs/nfsd/filecache.h
+++ b/fs/nfsd/filecache.h
@@ -55,7 +55,7 @@ void nfsd_file_cache_shutdown(void);
int nfsd_file_cache_start_net(struct net *net);
void nfsd_file_cache_shutdown_net(struct net *net);
void nfsd_file_put(struct nfsd_file *nf);
-void nfsd_file_put_local(struct nfsd_file *nf);
+struct net *nfsd_file_put_local(struct nfsd_file *nf);
struct nfsd_file *nfsd_file_get(struct nfsd_file *nf);
struct file *nfsd_file_file(struct nfsd_file *nf);
void nfsd_file_close_inode_sync(struct inode *inode);
diff --git a/fs/nfsd/lockd.c b/fs/nfsd/lockd.c
index 46a7f9b813e5..edc9f75dc75c 100644
--- a/fs/nfsd/lockd.c
+++ b/fs/nfsd/lockd.c
@@ -38,11 +38,20 @@ nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp,
memcpy(&fh.fh_handle.fh_raw, f->data, f->size);
fh.fh_export = NULL;
+ /*
+ * Allow BYPASS_GSS as some client implementations use AUTH_SYS
+ * for NLM even when GSS is used for NFS.
+ * Allow OWNER_OVERRIDE as permission might have been changed
+ * after the file was opened.
+ * Pass MAY_NLM so that authentication can be completely bypassed
+ * if NFSEXP_NOAUTHNLM is set. Some older clients use AUTH_NULL
+ * for NLM requests.
+ */
access = (mode == O_WRONLY) ? NFSD_MAY_WRITE : NFSD_MAY_READ;
- access |= NFSD_MAY_LOCK;
+ access |= NFSD_MAY_NLM | NFSD_MAY_OWNER_OVERRIDE | NFSD_MAY_BYPASS_GSS;
nfserr = nfsd_open(rqstp, &fh, S_IFREG, access, filp);
fh_put(&fh);
- /* We return nlm error codes as nlm doesn't know
+ /* We return nlm error codes as nlm doesn't know
* about nfsd, but nfsd does know about nlm..
*/
switch (nfserr) {
diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c
index 96e786b5e544..936ea1ad9586 100644
--- a/fs/nfsd/nfs4acl.c
+++ b/fs/nfsd/nfs4acl.c
@@ -198,8 +198,6 @@ summarize_posix_acl(struct posix_acl *acl, struct posix_acl_summary *pas)
memset(pas, 0, sizeof(*pas));
pas->mask = 07;
- pe = acl->a_entries + acl->a_count;
-
FOREACH_ACL_ENTRY(pa, acl, pe) {
switch (pa->e_tag) {
case ACL_USER_OBJ:
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index b5b3ab9d719a..c083e539e898 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -287,17 +287,17 @@ static int decode_cb_compound4res(struct xdr_stream *xdr,
u32 length;
__be32 *p;
- p = xdr_inline_decode(xdr, 4 + 4);
+ p = xdr_inline_decode(xdr, XDR_UNIT);
if (unlikely(p == NULL))
goto out_overflow;
- hdr->status = be32_to_cpup(p++);
+ hdr->status = be32_to_cpup(p);
/* Ignore the tag */
- length = be32_to_cpup(p++);
- p = xdr_inline_decode(xdr, length + 4);
- if (unlikely(p == NULL))
+ if (xdr_stream_decode_u32(xdr, &length) < 0)
+ goto out_overflow;
+ if (xdr_inline_decode(xdr, length) == NULL)
+ goto out_overflow;
+ if (xdr_stream_decode_u32(xdr, &hdr->nops) < 0)
goto out_overflow;
- p += XDR_QUADLEN(length);
- hdr->nops = be32_to_cpup(p);
return 0;
out_overflow:
return -EIO;
@@ -364,13 +364,29 @@ encode_cb_getattr4args(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr,
struct nfs4_delegation *dp =
container_of(fattr, struct nfs4_delegation, dl_cb_fattr);
struct knfsd_fh *fh = &dp->dl_stid.sc_file->fi_fhandle;
+ u32 bmap[1];
+
+ bmap[0] = FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE;
encode_nfs_cb_opnum4(xdr, OP_CB_GETATTR);
encode_nfs_fh4(xdr, fh);
- encode_bitmap4(xdr, fattr->ncf_cb_bmap, ARRAY_SIZE(fattr->ncf_cb_bmap));
+ encode_bitmap4(xdr, bmap, ARRAY_SIZE(bmap));
hdr->nops++;
}
+static u32 highest_slotid(struct nfsd4_session *ses)
+{
+ u32 idx;
+
+ spin_lock(&ses->se_lock);
+ idx = fls(~ses->se_cb_slot_avail);
+ if (idx > 0)
+ --idx;
+ idx = max(idx, ses->se_cb_highest_slot);
+ spin_unlock(&ses->se_lock);
+ return idx;
+}
+
/*
* CB_SEQUENCE4args
*
@@ -397,15 +413,40 @@ static void encode_cb_sequence4args(struct xdr_stream *xdr,
encode_sessionid4(xdr, session);
p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4 + 4);
- *p++ = cpu_to_be32(session->se_cb_seq_nr); /* csa_sequenceid */
- *p++ = xdr_zero; /* csa_slotid */
- *p++ = xdr_zero; /* csa_highest_slotid */
+ *p++ = cpu_to_be32(session->se_cb_seq_nr[cb->cb_held_slot]); /* csa_sequenceid */
+ *p++ = cpu_to_be32(cb->cb_held_slot); /* csa_slotid */
+ *p++ = cpu_to_be32(highest_slotid(session)); /* csa_highest_slotid */
*p++ = xdr_zero; /* csa_cachethis */
xdr_encode_empty_array(p); /* csa_referring_call_lists */
hdr->nops++;
}
+static void update_cb_slot_table(struct nfsd4_session *ses, u32 target)
+{
+ /* No need to do anything if nothing changed */
+ if (likely(target == READ_ONCE(ses->se_cb_highest_slot)))
+ return;
+
+ spin_lock(&ses->se_lock);
+ if (target > ses->se_cb_highest_slot) {
+ int i;
+
+ target = min(target, NFSD_BC_SLOT_TABLE_SIZE - 1);
+
+ /*
+ * Growing the slot table. Reset any new sequences to 1.
+ *
+ * NB: There is some debate about whether the RFC requires this,
+ * but the Linux client expects it.
+ */
+ for (i = ses->se_cb_highest_slot + 1; i <= target; ++i)
+ ses->se_cb_seq_nr[i] = 1;
+ }
+ ses->se_cb_highest_slot = target;
+ spin_unlock(&ses->se_lock);
+}
+
/*
* CB_SEQUENCE4resok
*
@@ -433,7 +474,7 @@ static int decode_cb_sequence4resok(struct xdr_stream *xdr,
struct nfsd4_session *session = cb->cb_clp->cl_cb_session;
int status = -ESERVERFAULT;
__be32 *p;
- u32 dummy;
+ u32 seqid, slotid, target;
/*
* If the server returns different values for sessionID, slotID or
@@ -449,21 +490,22 @@ static int decode_cb_sequence4resok(struct xdr_stream *xdr,
}
p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN);
- dummy = be32_to_cpup(p++);
- if (dummy != session->se_cb_seq_nr) {
+ seqid = be32_to_cpup(p++);
+ if (seqid != session->se_cb_seq_nr[cb->cb_held_slot]) {
dprintk("NFS: %s Invalid sequence number\n", __func__);
goto out;
}
- dummy = be32_to_cpup(p++);
- if (dummy != 0) {
+ slotid = be32_to_cpup(p++);
+ if (slotid != cb->cb_held_slot) {
dprintk("NFS: %s Invalid slotid\n", __func__);
goto out;
}
- /*
- * FIXME: process highest slotid and target highest slotid
- */
+ p++; // ignore current highest slot value
+
+ target = be32_to_cpup(p++);
+ update_cb_slot_table(session, target);
status = 0;
out:
cb->cb_seq_status = status;
@@ -1058,7 +1100,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
args.authflavor = clp->cl_cred.cr_flavor;
clp->cl_cb_ident = conn->cb_ident;
} else {
- if (!conn->cb_xprt)
+ if (!conn->cb_xprt || !ses)
return -EINVAL;
clp->cl_cb_session = ses;
args.bc_xprt = conn->cb_xprt;
@@ -1164,6 +1206,22 @@ void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
spin_unlock(&clp->cl_lock);
}
+static int grab_slot(struct nfsd4_session *ses)
+{
+ int idx;
+
+ spin_lock(&ses->se_lock);
+ idx = ffs(ses->se_cb_slot_avail) - 1;
+ if (idx < 0 || idx > ses->se_cb_highest_slot) {
+ spin_unlock(&ses->se_lock);
+ return -1;
+ }
+ /* clear the bit for the slot */
+ ses->se_cb_slot_avail &= ~BIT(idx);
+ spin_unlock(&ses->se_lock);
+ return idx;
+}
+
/*
* There's currently a single callback channel slot.
* If the slot is available, then mark it busy. Otherwise, set the
@@ -1172,28 +1230,32 @@ void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
static bool nfsd41_cb_get_slot(struct nfsd4_callback *cb, struct rpc_task *task)
{
struct nfs4_client *clp = cb->cb_clp;
+ struct nfsd4_session *ses = clp->cl_cb_session;
- if (!cb->cb_holds_slot &&
- test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
+ if (cb->cb_held_slot >= 0)
+ return true;
+ cb->cb_held_slot = grab_slot(ses);
+ if (cb->cb_held_slot < 0) {
rpc_sleep_on(&clp->cl_cb_waitq, task, NULL);
/* Race breaker */
- if (test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
- dprintk("%s slot is busy\n", __func__);
+ cb->cb_held_slot = grab_slot(ses);
+ if (cb->cb_held_slot < 0)
return false;
- }
rpc_wake_up_queued_task(&clp->cl_cb_waitq, task);
}
- cb->cb_holds_slot = true;
return true;
}
static void nfsd41_cb_release_slot(struct nfsd4_callback *cb)
{
struct nfs4_client *clp = cb->cb_clp;
+ struct nfsd4_session *ses = clp->cl_cb_session;
- if (cb->cb_holds_slot) {
- cb->cb_holds_slot = false;
- clear_bit(0, &clp->cl_cb_slot_busy);
+ if (cb->cb_held_slot >= 0) {
+ spin_lock(&ses->se_lock);
+ ses->se_cb_slot_avail |= BIT(cb->cb_held_slot);
+ spin_unlock(&ses->se_lock);
+ cb->cb_held_slot = -1;
rpc_wake_up_next(&clp->cl_cb_waitq);
}
}
@@ -1210,8 +1272,8 @@ static void nfsd41_destroy_cb(struct nfsd4_callback *cb)
}
/*
- * TODO: cb_sequence should support referring call lists, cachethis, multiple
- * slots, and mark callback channel down on communication errors.
+ * TODO: cb_sequence should support referring call lists, cachethis,
+ * and mark callback channel down on communication errors.
*/
static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
{
@@ -1253,7 +1315,7 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
return true;
}
- if (!cb->cb_holds_slot)
+ if (cb->cb_held_slot < 0)
goto need_restart;
/* This is the operation status code for CB_SEQUENCE */
@@ -1267,10 +1329,10 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
* If CB_SEQUENCE returns an error, then the state of the slot
* (sequence ID, cached reply) MUST NOT change.
*/
- ++session->se_cb_seq_nr;
+ ++session->se_cb_seq_nr[cb->cb_held_slot];
break;
case -ESERVERFAULT:
- ++session->se_cb_seq_nr;
+ ++session->se_cb_seq_nr[cb->cb_held_slot];
nfsd4_mark_cb_fault(cb->cb_clp);
ret = false;
break;
@@ -1296,17 +1358,16 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
case -NFS4ERR_BADSLOT:
goto retry_nowait;
case -NFS4ERR_SEQ_MISORDERED:
- if (session->se_cb_seq_nr != 1) {
- session->se_cb_seq_nr = 1;
+ if (session->se_cb_seq_nr[cb->cb_held_slot] != 1) {
+ session->se_cb_seq_nr[cb->cb_held_slot] = 1;
goto retry_nowait;
}
break;
default:
nfsd4_mark_cb_fault(cb->cb_clp);
}
- nfsd41_cb_release_slot(cb);
-
trace_nfsd_cb_free_slot(task, cb);
+ nfsd41_cb_release_slot(cb);
if (RPC_SIGNALLED(task))
goto need_restart;
@@ -1524,7 +1585,7 @@ void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
INIT_WORK(&cb->cb_work, nfsd4_run_cb_work);
cb->cb_status = 0;
cb->cb_need_restart = false;
- cb->cb_holds_slot = false;
+ cb->cb_held_slot = -1;
}
/**
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index d32f2dfd148f..ad44ad49274f 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -57,6 +57,8 @@ module_param(inter_copy_offload_enable, bool, 0644);
MODULE_PARM_DESC(inter_copy_offload_enable,
"Enable inter server to server copy offload. Default: false");
+static void cleanup_async_copy(struct nfsd4_copy *copy);
+
#ifdef CONFIG_NFSD_V4_2_INTER_SSC
static int nfsd4_ssc_umount_timeout = 900000; /* default to 15 mins */
module_param(nfsd4_ssc_umount_timeout, int, 0644);
@@ -1276,23 +1278,88 @@ out:
return status;
}
+/**
+ * nfsd4_has_active_async_copies - Check for ongoing copy operations
+ * @clp: Client to be checked
+ *
+ * NFSD maintains state for async COPY operations after they complete,
+ * and this state remains in the nfs4_client's async_copies list.
+ * Ongoing copies should block the destruction of the nfs4_client, but
+ * completed copies should not.
+ *
+ * Return values:
+ * %true: At least one active async COPY is ongoing
+ * %false: No active async COPY operations were found
+ */
+bool nfsd4_has_active_async_copies(struct nfs4_client *clp)
+{
+ struct nfsd4_copy *copy;
+ bool result = false;
+
+ spin_lock(&clp->async_lock);
+ list_for_each_entry(copy, &clp->async_copies, copies) {
+ if (!test_bit(NFSD4_COPY_F_COMPLETED, &copy->cp_flags) &&
+ !test_bit(NFSD4_COPY_F_STOPPED, &copy->cp_flags)) {
+ result = true;
+ break;
+ }
+ }
+ spin_unlock(&clp->async_lock);
+ return result;
+}
+
+/**
+ * nfsd4_async_copy_reaper - Purge completed copies
+ * @nn: Network namespace with possible active copy information
+ */
+void nfsd4_async_copy_reaper(struct nfsd_net *nn)
+{
+ struct nfs4_client *clp;
+ struct nfsd4_copy *copy;
+ LIST_HEAD(reaplist);
+
+ spin_lock(&nn->client_lock);
+ list_for_each_entry(clp, &nn->client_lru, cl_lru) {
+ struct list_head *pos, *next;
+
+ spin_lock(&clp->async_lock);
+ list_for_each_safe(pos, next, &clp->async_copies) {
+ copy = list_entry(pos, struct nfsd4_copy, copies);
+ if (test_bit(NFSD4_COPY_F_OFFLOAD_DONE, &copy->cp_flags)) {
+ if (--copy->cp_ttl) {
+ list_del_init(&copy->copies);
+ list_add(&copy->copies, &reaplist);
+ }
+ }
+ }
+ spin_unlock(&clp->async_lock);
+ }
+ spin_unlock(&nn->client_lock);
+
+ while (!list_empty(&reaplist)) {
+ copy = list_first_entry(&reaplist, struct nfsd4_copy, copies);
+ list_del_init(&copy->copies);
+ cleanup_async_copy(copy);
+ }
+}
+
static void nfs4_put_copy(struct nfsd4_copy *copy)
{
if (!refcount_dec_and_test(&copy->refcount))
return;
- atomic_dec(&copy->cp_nn->pending_async_copies);
kfree(copy->cp_src);
kfree(copy);
}
static void nfsd4_stop_copy(struct nfsd4_copy *copy)
{
+ trace_nfsd_copy_async_cancel(copy);
if (!test_and_set_bit(NFSD4_COPY_F_STOPPED, &copy->cp_flags))
kthread_stop(copy->copy_task);
nfs4_put_copy(copy);
}
-static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp)
+static struct nfsd4_copy *nfsd4_unhash_copy(struct nfs4_client *clp)
{
struct nfsd4_copy *copy = NULL;
@@ -1301,6 +1368,9 @@ static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp)
copy = list_first_entry(&clp->async_copies, struct nfsd4_copy,
copies);
refcount_inc(&copy->refcount);
+ copy->cp_clp = NULL;
+ if (!list_empty(&copy->copies))
+ list_del_init(&copy->copies);
}
spin_unlock(&clp->async_lock);
return copy;
@@ -1310,7 +1380,7 @@ void nfsd4_shutdown_copy(struct nfs4_client *clp)
{
struct nfsd4_copy *copy;
- while ((copy = nfsd4_get_copy(clp)) != NULL)
+ while ((copy = nfsd4_unhash_copy(clp)) != NULL)
nfsd4_stop_copy(copy);
}
#ifdef CONFIG_NFSD_V4_2_INTER_SSC
@@ -1598,8 +1668,10 @@ static void nfsd4_cb_offload_release(struct nfsd4_callback *cb)
{
struct nfsd4_cb_offload *cbo =
container_of(cb, struct nfsd4_cb_offload, co_cb);
+ struct nfsd4_copy *copy =
+ container_of(cbo, struct nfsd4_copy, cp_cb_offload);
- kfree(cbo);
+ set_bit(NFSD4_COPY_F_OFFLOAD_DONE, &copy->cp_flags);
}
static int nfsd4_cb_offload_done(struct nfsd4_callback *cb,
@@ -1609,6 +1681,13 @@ static int nfsd4_cb_offload_done(struct nfsd4_callback *cb,
container_of(cb, struct nfsd4_cb_offload, co_cb);
trace_nfsd_cb_offload_done(&cbo->co_res.cb_stateid, task);
+ switch (task->tk_status) {
+ case -NFS4ERR_DELAY:
+ if (cbo->co_retries--) {
+ rpc_delay(task, 1 * HZ);
+ return 0;
+ }
+ }
return 1;
}
@@ -1732,15 +1811,12 @@ static void cleanup_async_copy(struct nfsd4_copy *copy)
static void nfsd4_send_cb_offload(struct nfsd4_copy *copy)
{
- struct nfsd4_cb_offload *cbo;
-
- cbo = kzalloc(sizeof(*cbo), GFP_KERNEL);
- if (!cbo)
- return;
+ struct nfsd4_cb_offload *cbo = &copy->cp_cb_offload;
memcpy(&cbo->co_res, &copy->cp_res, sizeof(copy->cp_res));
memcpy(&cbo->co_fh, &copy->fh, sizeof(copy->fh));
cbo->co_nfserr = copy->nfserr;
+ cbo->co_retries = 5;
nfsd4_init_cb(&cbo->co_cb, copy->cp_clp, &nfsd4_cb_offload_ops,
NFSPROC4_CLNT_CB_OFFLOAD);
@@ -1786,10 +1862,14 @@ static int nfsd4_do_async_copy(void *data)
}
do_callback:
+ /* The kthread exits forthwith. Ensure that a subsequent
+ * OFFLOAD_CANCEL won't try to kill it again. */
+ set_bit(NFSD4_COPY_F_STOPPED, &copy->cp_flags);
+
set_bit(NFSD4_COPY_F_COMPLETED, &copy->cp_flags);
trace_nfsd_copy_async_done(copy);
nfsd4_send_cb_offload(copy);
- cleanup_async_copy(copy);
+ atomic_dec(&copy->cp_nn->pending_async_copies);
return 0;
}
@@ -1843,22 +1923,23 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
async_copy->cp_nn = nn;
INIT_LIST_HEAD(&async_copy->copies);
refcount_set(&async_copy->refcount, 1);
+ async_copy->cp_ttl = NFSD_COPY_INITIAL_TTL;
/* Arbitrary cap on number of pending async copy operations */
if (atomic_inc_return(&nn->pending_async_copies) >
(int)rqstp->rq_pool->sp_nrthreads)
- goto out_err;
+ goto out_dec_async_copy_err;
async_copy->cp_src = kmalloc(sizeof(*async_copy->cp_src), GFP_KERNEL);
if (!async_copy->cp_src)
- goto out_err;
+ goto out_dec_async_copy_err;
if (!nfs4_init_copy_state(nn, copy))
- goto out_err;
+ goto out_dec_async_copy_err;
memcpy(&result->cb_stateid, &copy->cp_stateid.cs_stid,
sizeof(result->cb_stateid));
dup_copy_fields(copy, async_copy);
async_copy->copy_task = kthread_create(nfsd4_do_async_copy,
async_copy, "%s", "copy thread");
if (IS_ERR(async_copy->copy_task))
- goto out_err;
+ goto out_dec_async_copy_err;
spin_lock(&async_copy->cp_clp->async_lock);
list_add(&async_copy->copies,
&async_copy->cp_clp->async_copies);
@@ -1873,6 +1954,9 @@ out:
trace_nfsd_copy_done(copy, status);
release_copy_files(copy);
return status;
+out_dec_async_copy_err:
+ if (async_copy)
+ atomic_dec(&nn->pending_async_copies);
out_err:
if (nfsd4_ssc_is_inter(copy)) {
/*
@@ -2780,6 +2864,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp)
if (op->opdesc->op_get_currentstateid)
op->opdesc->op_get_currentstateid(cstate, &op->u);
op->status = op->opdesc->op_func(rqstp, cstate, &op->u);
+ trace_nfsd_compound_op_err(rqstp, op->opnum, op->status);
/* Only from SEQUENCE */
if (cstate->status == nfserr_replay_cache) {
@@ -2796,7 +2881,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp)
if (current_fh->fh_export &&
need_wrongsec_check(rqstp))
- op->status = check_nfsd_access(current_fh->fh_export, rqstp);
+ op->status = check_nfsd_access(current_fh->fh_export, rqstp, false);
}
encode_op:
if (op->status == nfserr_replay_me) {
@@ -3452,6 +3537,7 @@ static const struct nfsd4_operation nfsd4_ops[] = {
/* NFSv4.1 operations */
[OP_EXCHANGE_ID] = {
.op_func = nfsd4_exchange_id,
+ .op_release = nfsd4_exchange_id_release,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
| OP_MODIFIES_SOMETHING,
.op_name = "OP_EXCHANGE_ID",
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index b7d61eb8afe9..4a765555bf84 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -659,7 +659,8 @@ nfs4_reset_recoverydir(char *recdir)
return status;
status = -ENOTDIR;
if (d_is_dir(path.dentry)) {
- strcpy(user_recovery_dirname, recdir);
+ strscpy(user_recovery_dirname, recdir,
+ sizeof(user_recovery_dirname));
status = 0;
}
path_put(&path);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 551d2958ec29..741b9449f727 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -149,14 +149,14 @@ void nfsd4_destroy_laundry_wq(void)
static bool is_session_dead(struct nfsd4_session *ses)
{
- return ses->se_flags & NFS4_SESSION_DEAD;
+ return ses->se_dead;
}
static __be32 mark_session_dead_locked(struct nfsd4_session *ses, int ref_held_by_me)
{
if (atomic_read(&ses->se_ref) > ref_held_by_me)
return nfserr_jukebox;
- ses->se_flags |= NFS4_SESSION_DEAD;
+ ses->se_dead = true;
return nfs_ok;
}
@@ -572,13 +572,6 @@ opaque_hashval(const void *ptr, int nbytes)
return x;
}
-static void nfsd4_free_file_rcu(struct rcu_head *rcu)
-{
- struct nfs4_file *fp = container_of(rcu, struct nfs4_file, fi_rcu);
-
- kmem_cache_free(file_slab, fp);
-}
-
void
put_nfs4_file(struct nfs4_file *fi)
{
@@ -586,7 +579,7 @@ put_nfs4_file(struct nfs4_file *fi)
nfsd4_file_hash_remove(fi);
WARN_ON_ONCE(!list_empty(&fi->fi_clnt_odstate));
WARN_ON_ONCE(!list_empty(&fi->fi_delegations));
- call_rcu(&fi->fi_rcu, nfsd4_free_file_rcu);
+ kfree_rcu(fi, fi_rcu);
}
}
@@ -1184,7 +1177,6 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_file *fp,
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;
@@ -1660,6 +1652,14 @@ static void release_open_stateid(struct nfs4_ol_stateid *stp)
free_ol_stateid_reaplist(&reaplist);
}
+static bool nfs4_openowner_unhashed(struct nfs4_openowner *oo)
+{
+ lockdep_assert_held(&oo->oo_owner.so_client->cl_lock);
+
+ return list_empty(&oo->oo_owner.so_strhash) &&
+ list_empty(&oo->oo_perclient);
+}
+
static void unhash_openowner_locked(struct nfs4_openowner *oo)
{
struct nfs4_client *clp = oo->oo_owner.so_client;
@@ -2010,8 +2010,10 @@ static struct nfsd4_session *alloc_session(struct nfsd4_channel_attrs *fattrs,
}
memcpy(&new->se_fchannel, fattrs, sizeof(struct nfsd4_channel_attrs));
- memcpy(&new->se_bchannel, battrs, sizeof(struct nfsd4_channel_attrs));
-
+ new->se_cb_slot_avail = ~0U;
+ new->se_cb_highest_slot = min(battrs->maxreqs - 1,
+ NFSD_BC_SLOT_TABLE_SIZE - 1);
+ spin_lock_init(&new->se_lock);
return new;
out_free:
while (i--)
@@ -2142,11 +2144,14 @@ static void init_session(struct svc_rqst *rqstp, struct nfsd4_session *new, stru
INIT_LIST_HEAD(&new->se_conns);
- new->se_cb_seq_nr = 1;
- new->se_flags = cses->flags;
+ atomic_set(&new->se_ref, 0);
+ new->se_dead = false;
new->se_cb_prog = cses->callback_prog;
new->se_cb_sec = cses->cb_sec;
- atomic_set(&new->se_ref, 0);
+
+ for (idx = 0; idx < NFSD_BC_SLOT_TABLE_SIZE; ++idx)
+ new->se_cb_seq_nr[idx] = 1;
+
idx = hash_sessionid(&new->se_sessionid);
list_add(&new->se_hash, &nn->sessionid_hashtbl[idx]);
spin_lock(&clp->cl_lock);
@@ -2239,21 +2244,16 @@ STALE_CLIENTID(clientid_t *clid, struct nfsd_net *nn)
return 1;
}
-/*
- * XXX Should we use a slab cache ?
- * This type of memory management is somewhat inefficient, but we use it
- * anyway since SETCLIENTID is not a common operation.
- */
static struct nfs4_client *alloc_client(struct xdr_netobj name,
struct nfsd_net *nn)
{
struct nfs4_client *clp;
int i;
- if (atomic_read(&nn->nfs4_client_count) >= nn->nfs4_max_clients) {
+ if (atomic_read(&nn->nfs4_client_count) >= nn->nfs4_max_clients &&
+ atomic_read(&nn->nfsd_courtesy_clients) > 0)
mod_delayed_work(laundry_wq, &nn->laundromat_work, 0);
- return NULL;
- }
+
clp = kmem_cache_zalloc(client_slab, GFP_KERNEL);
if (clp == NULL)
return NULL;
@@ -3160,7 +3160,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name,
kref_init(&clp->cl_nfsdfs.cl_ref);
nfsd4_init_cb(&clp->cl_cb_null, clp, NULL, NFSPROC4_CLNT_CB_NULL);
clp->cl_time = ktime_get_boottime_seconds();
- clear_bit(0, &clp->cl_cb_slot_busy);
copy_verf(clp, verf);
memcpy(&clp->cl_addr, sa, sizeof(struct sockaddr_storage));
clp->cl_cb_session = NULL;
@@ -3487,7 +3486,7 @@ static bool client_has_state(struct nfs4_client *clp)
#endif
|| !list_empty(&clp->cl_delegations)
|| !list_empty(&clp->cl_sessions)
- || !list_empty(&clp->async_copies);
+ || nfsd4_has_active_async_copies(clp);
}
static __be32 copy_impl_id(struct nfs4_client *clp,
@@ -3525,6 +3524,12 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
__func__, rqstp, exid, exid->clname.len, exid->clname.data,
addr_str, exid->flags, exid->spa_how);
+ exid->server_impl_name = kasprintf(GFP_KERNEL, "%s %s %s %s",
+ utsname()->sysname, utsname()->release,
+ utsname()->version, utsname()->machine);
+ if (!exid->server_impl_name)
+ return nfserr_jukebox;
+
if (exid->flags & ~EXCHGID4_FLAG_MASK_A)
return nfserr_inval;
@@ -3662,6 +3667,23 @@ out_copy:
exid->seqid = conf->cl_cs_slot.sl_seqid + 1;
nfsd4_set_ex_flags(conf, exid);
+ exid->nii_domain.len = sizeof("kernel.org") - 1;
+ exid->nii_domain.data = "kernel.org";
+
+ /*
+ * Note that RFC 8881 places no length limit on
+ * nii_name, but this implementation permits no
+ * more than NFS4_OPAQUE_LIMIT bytes.
+ */
+ exid->nii_name.len = strlen(exid->server_impl_name);
+ if (exid->nii_name.len > NFS4_OPAQUE_LIMIT)
+ exid->nii_name.len = NFS4_OPAQUE_LIMIT;
+ exid->nii_name.data = exid->server_impl_name;
+
+ /* just send zeros - the date is in nii_name */
+ exid->nii_time.tv_sec = 0;
+ exid->nii_time.tv_nsec = 0;
+
dprintk("nfsd4_exchange_id seqid %d flags %x\n",
conf->cl_cs_slot.sl_seqid, conf->cl_exchange_flags);
status = nfs_ok;
@@ -3678,6 +3700,14 @@ out_nolock:
return status;
}
+void
+nfsd4_exchange_id_release(union nfsd4_op_u *u)
+{
+ struct nfsd4_exchange_id *exid = &u->exchange_id;
+
+ kfree(exid->server_impl_name);
+}
+
static __be32 check_slot_seqid(u32 seqid, u32 slot_seqid, bool slot_inuse)
{
/* The slot is in use, and no response has been sent. */
@@ -3911,6 +3941,8 @@ nfsd4_create_session(struct svc_rqst *rqstp,
cr_ses->flags &= ~SESSION4_PERSIST;
/* Upshifting from TCP to RDMA is not supported */
cr_ses->flags &= ~SESSION4_RDMA;
+ /* Report the correct number of backchannel slots */
+ cr_ses->back_channel.maxreqs = new->se_cb_highest_slot + 1;
init_session(rqstp, new, conf, cr_ses);
nfsd4_get_session_locked(new);
@@ -3931,7 +3963,6 @@ nfsd4_create_session(struct svc_rqst *rqstp,
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.
@@ -3946,8 +3977,6 @@ out_cache_error:
out_free_conn:
spin_unlock(&nn->client_lock);
free_conn(conn);
- if (old)
- expire_client(old);
out_free_session:
__free_session(new);
out_release_drc_mem:
@@ -4975,6 +5004,12 @@ retry:
spin_lock(&oo->oo_owner.so_client->cl_lock);
spin_lock(&fp->fi_lock);
+ if (nfs4_openowner_unhashed(oo)) {
+ mutex_unlock(&stp->st_mutex);
+ stp = NULL;
+ goto out_unlock;
+ }
+
retstp = nfsd4_find_existing_open(fp, open);
if (retstp)
goto out_unlock;
@@ -5957,7 +5992,7 @@ nfs4_delegation_stat(struct nfs4_delegation *dp, struct svc_fh *currentfh,
path.dentry = file_dentry(nf->nf_file);
rc = vfs_getattr(&path, stat,
- (STATX_SIZE | STATX_CTIME | STATX_CHANGE_COOKIE),
+ (STATX_MODE | STATX_SIZE | STATX_CTIME | STATX_CHANGE_COOKIE),
AT_STATX_SYNC_AS_STAT);
nfsd_file_put(nf);
@@ -6041,8 +6076,7 @@ nfs4_open_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp,
}
open->op_delegate_type = NFS4_OPEN_DELEGATE_WRITE;
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));
+ dp->dl_cb_fattr.ncf_initial_cinfo = nfsd4_change_attribute(&stat);
trace_nfsd_deleg_write(&dp->dl_stid.sc_stateid);
} else {
open->op_delegate_type = NFS4_OPEN_DELEGATE_READ;
@@ -6127,6 +6161,11 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
if (!stp) {
stp = init_open_stateid(fp, open);
+ if (!stp) {
+ status = nfserr_jukebox;
+ goto out;
+ }
+
if (!open->op_stp)
new_stp = true;
}
@@ -6562,6 +6601,7 @@ nfs4_laundromat(struct nfsd_net *nn)
_free_cpntf_state_locked(nn, cps);
}
spin_unlock(&nn->s2s_cp_lock);
+ nfsd4_async_copy_reaper(nn);
nfs4_get_client_reaplist(nn, &reaplist, &lt);
nfs4_process_client_reaplist(&reaplist);
@@ -7943,11 +7983,9 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (check_lock_length(lock->lk_offset, lock->lk_length))
return nfserr_inval;
- if ((status = fh_verify(rqstp, &cstate->current_fh,
- S_IFREG, NFSD_MAY_LOCK))) {
- dprintk("NFSD: nfsd4_lock: permission denied!\n");
+ status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0);
+ if (status != nfs_ok)
return status;
- }
sb = cstate->current_fh.fh_dentry->d_sb;
if (lock->lk_is_new) {
@@ -8001,9 +8039,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
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))
- flags |= FL_SLEEP;
fallthrough;
case NFS4_READ_LT:
spin_lock(&fp->fi_lock);
@@ -8014,9 +8049,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
type = F_RDLCK;
break;
case NFS4_WRITEW_LT:
- if (nfsd4_has_session(cstate) ||
- exportfs_lock_op_is_async(sb->s_export_op))
- flags |= FL_SLEEP;
fallthrough;
case NFS4_WRITE_LT:
spin_lock(&fp->fi_lock);
@@ -8036,15 +8068,10 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
}
- /*
- * Most filesystems with their own ->lock operations will block
- * the nfsd thread waiting to acquire the lock. That leads to
- * deadlocks (we don't want every nfsd thread tied up waiting
- * for file locks), so don't attempt blocking lock notifications
- * on those filesystems:
- */
- if (!exportfs_lock_op_is_async(sb->s_export_op))
- flags &= ~FL_SLEEP;
+ if (lock->lk_type & (NFS4_READW_LT | NFS4_WRITEW_LT) &&
+ nfsd4_has_session(cstate) &&
+ locks_can_async_lock(nf->nf_file->f_op))
+ flags |= FL_SLEEP;
nbl = find_or_allocate_block(lock_sop, &fp->fi_fhandle, nn);
if (!nbl) {
@@ -8865,8 +8892,7 @@ nfsd4_get_writestateid(struct nfsd4_compound_state *cstate,
* nfsd4_deleg_getattr_conflict - Recall if GETATTR causes conflict
* @rqstp: RPC transaction context
* @dentry: dentry of inode to be checked for a conflict
- * @modified: return true if file was modified
- * @size: new size of file if modified is true
+ * @pdp: returned WRITE delegation, if one was found
*
* This function is called when there is a conflict between a write
* delegation and a change/size GETATTR from another client. The server
@@ -8876,11 +8902,12 @@ nfsd4_get_writestateid(struct nfsd4_compound_state *cstate,
* 18.7.4.
*
* Returns 0 if there is no conflict; otherwise an nfs_stat
- * code is returned.
+ * code is returned. If @pdp is set to a non-NULL value, then the
+ * caller must put the reference.
*/
__be32
nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct dentry *dentry,
- bool *modified, u64 *size)
+ struct nfs4_delegation **pdp)
{
__be32 status;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
@@ -8891,10 +8918,9 @@ nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct dentry *dentry,
struct nfs4_cb_fattr *ncf;
struct inode *inode = d_inode(dentry);
- *modified = false;
ctx = locks_inode_context(inode);
if (!ctx)
- return 0;
+ return nfs_ok;
#define NON_NFSD_LEASE ((void *)1)
@@ -8960,10 +8986,10 @@ nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct dentry *dentry,
goto out_status;
}
ncf->ncf_cur_fsize = ncf->ncf_cb_fsize;
- *size = ncf->ncf_cur_fsize;
- *modified = true;
+ *pdp = dp;
+ return nfs_ok;
}
- status = 0;
+ status = nfs_ok;
out_status:
nfs4_put_stid(&dp->dl_stid);
return status;
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f118921250c3..53fac037611c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2652,13 +2652,10 @@ static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep,
strlen = end - str;
if (strlen) {
- p = xdr_reserve_space(xdr, strlen + 4);
- if (!p)
+ if (xdr_stream_encode_opaque(xdr, str, strlen) < 0)
return nfserr_resource;
- p = xdr_encode_opaque(p, str, strlen);
count++;
- }
- else
+ } else
end++;
if (found_esc)
end = next;
@@ -2699,7 +2696,6 @@ static __be32 nfsd4_encode_pathname4(struct xdr_stream *xdr,
const struct path *path)
{
struct path cur = *path;
- __be32 *p;
struct dentry **components = NULL;
unsigned int ncomponents = 0;
__be32 err = nfserr_jukebox;
@@ -2730,24 +2726,19 @@ static __be32 nfsd4_encode_pathname4(struct xdr_stream *xdr,
components[ncomponents++] = cur.dentry;
cur.dentry = dget_parent(cur.dentry);
}
+
err = nfserr_resource;
- p = xdr_reserve_space(xdr, 4);
- if (!p)
+ if (xdr_stream_encode_u32(xdr, ncomponents) != XDR_UNIT)
goto out_free;
- *p++ = cpu_to_be32(ncomponents);
-
while (ncomponents) {
struct dentry *dentry = components[ncomponents - 1];
- unsigned int len;
spin_lock(&dentry->d_lock);
- len = dentry->d_name.len;
- p = xdr_reserve_space(xdr, len + 4);
- if (!p) {
+ if (xdr_stream_encode_opaque(xdr, dentry->d_name.name,
+ dentry->d_name.len) < 0) {
spin_unlock(&dentry->d_lock);
goto out_free;
}
- p = xdr_encode_opaque(p, dentry->d_name.name, len);
dprintk("/%pd", dentry);
spin_unlock(&dentry->d_lock);
dput(dentry);
@@ -2928,7 +2919,6 @@ struct nfsd4_fattr_args {
struct kstat stat;
struct kstatfs statfs;
struct nfs4_acl *acl;
- u64 size;
#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
void *context;
int contextlen;
@@ -3040,14 +3030,14 @@ static __be32 nfsd4_encode_fattr4_change(struct xdr_stream *xdr,
return nfs_ok;
}
- c = nfsd4_change_attribute(&args->stat, d_inode(args->dentry));
+ c = nfsd4_change_attribute(&args->stat);
return nfsd4_encode_changeid4(xdr, c);
}
static __be32 nfsd4_encode_fattr4_size(struct xdr_stream *xdr,
const struct nfsd4_fattr_args *args)
{
- return nfsd4_encode_uint64_t(xdr, args->size);
+ return nfsd4_encode_uint64_t(xdr, args->stat.size);
}
static __be32 nfsd4_encode_fattr4_fsid(struct xdr_stream *xdr,
@@ -3512,6 +3502,7 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,
int ignore_crossmnt)
{
DECLARE_BITMAP(attr_bitmap, ARRAY_SIZE(nfsd4_enc_fattr4_encode_ops));
+ struct nfs4_delegation *dp = NULL;
struct nfsd4_fattr_args args;
struct svc_fh *tempfh = NULL;
int starting_len = xdr->buf->len;
@@ -3526,8 +3517,6 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,
.dentry = dentry,
};
unsigned long bit;
- bool file_modified = false;
- u64 size = 0;
WARN_ON_ONCE(bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1);
WARN_ON_ONCE(!nfsd_attrs_supported(minorversion, bmval));
@@ -3555,10 +3544,8 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,
if (status)
goto out;
}
- args.size = 0;
if (attrmask[0] & (FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE)) {
- status = nfsd4_deleg_getattr_conflict(rqstp, dentry,
- &file_modified, &size);
+ status = nfsd4_deleg_getattr_conflict(rqstp, dentry, &dp);
if (status)
goto out;
}
@@ -3566,12 +3553,16 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,
err = vfs_getattr(&path, &args.stat,
STATX_BASIC_STATS | STATX_BTIME | STATX_CHANGE_COOKIE,
AT_STATX_SYNC_AS_STAT);
+ if (dp) {
+ struct nfs4_cb_fattr *ncf = &dp->dl_cb_fattr;
+
+ if (ncf->ncf_file_modified)
+ args.stat.size = ncf->ncf_cur_fsize;
+
+ nfs4_put_stid(&dp->dl_stid);
+ }
if (err)
goto out_nfserr;
- if (file_modified)
- args.size = size;
- else
- args.size = args.stat.size;
if (!(args.stat.result_mask & STATX_BTIME))
/* underlying FS does not offer btime so we can't share it */
@@ -3767,7 +3758,7 @@ nfsd4_encode_entry4_fattr(struct nfsd4_readdir *cd, const char *name,
nfserr = nfserrno(err);
goto out_put;
}
- nfserr = check_nfsd_access(exp, cd->rd_rqstp);
+ nfserr = check_nfsd_access(exp, cd->rd_rqstp, false);
if (nfserr)
goto out_put;
@@ -4826,6 +4817,25 @@ nfsd4_encode_server_owner4(struct xdr_stream *xdr, struct svc_rqst *rqstp)
}
static __be32
+nfsd4_encode_nfs_impl_id4(struct xdr_stream *xdr, struct nfsd4_exchange_id *exid)
+{
+ __be32 status;
+
+ /* nii_domain */
+ status = nfsd4_encode_opaque(xdr, exid->nii_domain.data,
+ exid->nii_domain.len);
+ if (status != nfs_ok)
+ return status;
+ /* nii_name */
+ status = nfsd4_encode_opaque(xdr, exid->nii_name.data,
+ exid->nii_name.len);
+ if (status != nfs_ok)
+ return status;
+ /* nii_time */
+ return nfsd4_encode_nfstime4(xdr, &exid->nii_time);
+}
+
+static __be32
nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr,
union nfsd4_op_u *u)
{
@@ -4859,8 +4869,11 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr,
if (nfserr != nfs_ok)
return nfserr;
/* eir_server_impl_id<1> */
- if (xdr_stream_encode_u32(xdr, 0) != XDR_UNIT)
+ if (xdr_stream_encode_u32(xdr, 1) != XDR_UNIT)
return nfserr_resource;
+ nfserr = nfsd4_encode_nfs_impl_id4(xdr, exid);
+ if (nfserr != nfs_ok)
+ return nfserr;
return nfs_ok;
}
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 40ad58a6a036..6a831cb242df 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -320,6 +320,7 @@ __fh_verify(struct svc_rqst *rqstp,
{
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct svc_export *exp = NULL;
+ bool may_bypass_gss = false;
struct dentry *dentry;
__be32 error;
@@ -362,13 +363,12 @@ __fh_verify(struct svc_rqst *rqstp,
if (error)
goto out;
- /*
- * pseudoflavor restrictions are not enforced on NLM,
- * which clients virtually always use auth_sys for,
- * even while using RPCSEC_GSS for NFS.
- */
- if (access & NFSD_MAY_LOCK || access & NFSD_MAY_BYPASS_GSS)
- goto skip_pseudoflavor_check;
+ if ((access & NFSD_MAY_NLM) && (exp->ex_flags & NFSEXP_NOAUTHNLM))
+ /* NLM is allowed to fully bypass authentication */
+ goto out;
+
+ if (access & NFSD_MAY_BYPASS_GSS)
+ may_bypass_gss = true;
/*
* Clients may expect to be able to use auth_sys during mount,
* even if they use gss for everything else; see section 2.3.2
@@ -376,13 +376,12 @@ __fh_verify(struct svc_rqst *rqstp,
*/
if (access & NFSD_MAY_BYPASS_GSS_ON_ROOT
&& exp->ex_path.dentry == dentry)
- goto skip_pseudoflavor_check;
+ may_bypass_gss = true;
- error = check_nfsd_access(exp, rqstp);
+ error = check_nfsd_access(exp, rqstp, may_bypass_gss);
if (error)
goto out;
-skip_pseudoflavor_check:
/* Finally, check access permissions. */
error = nfsd_permission(cred, exp, dentry, access);
out:
@@ -667,20 +666,18 @@ out_negative:
__be32 __must_check fh_fill_pre_attrs(struct svc_fh *fhp)
{
bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE);
- struct inode *inode;
struct kstat stat;
__be32 err;
if (fhp->fh_no_wcc || fhp->fh_pre_saved)
return nfs_ok;
- inode = d_inode(fhp->fh_dentry);
err = fh_getattr(fhp, &stat);
if (err)
return err;
if (v4)
- fhp->fh_pre_change = nfsd4_change_attribute(&stat, inode);
+ fhp->fh_pre_change = nfsd4_change_attribute(&stat);
fhp->fh_pre_mtime = stat.mtime;
fhp->fh_pre_ctime = stat.ctime;
@@ -697,7 +694,6 @@ __be32 __must_check fh_fill_pre_attrs(struct svc_fh *fhp)
__be32 fh_fill_post_attrs(struct svc_fh *fhp)
{
bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE);
- struct inode *inode = d_inode(fhp->fh_dentry);
__be32 err;
if (fhp->fh_no_wcc)
@@ -713,7 +709,7 @@ __be32 fh_fill_post_attrs(struct svc_fh *fhp)
fhp->fh_post_saved = true;
if (v4)
fhp->fh_post_change =
- nfsd4_change_attribute(&fhp->fh_post_attr, inode);
+ nfsd4_change_attribute(&fhp->fh_post_attr);
return nfs_ok;
}
@@ -770,7 +766,7 @@ char * SVCFH_fmt(struct svc_fh *fhp)
struct knfsd_fh *fh = &fhp->fh_handle;
static char buf[2+1+1+64*3+1];
- if (fh->fh_size < 0 || fh->fh_size> 64)
+ if (fh->fh_size > 64)
return "bad-fh";
sprintf(buf, "%d: %*ph", fh->fh_size, fh->fh_size, fh->fh_raw);
return buf;
@@ -804,7 +800,14 @@ enum fsid_source fsid_source(const struct svc_fh *fhp)
return FSIDSOURCE_DEV;
}
-/*
+/**
+ * nfsd4_change_attribute - Generate an NFSv4 change_attribute value
+ * @stat: inode attributes
+ *
+ * Caller must fill in @stat before calling, typically by invoking
+ * vfs_getattr() with STATX_MODE, STATX_CTIME, and STATX_CHANGE_COOKIE.
+ * Returns an unsigned 64-bit changeid4 value (RFC 8881 Section 3.2).
+ *
* We could use i_version alone as the change attribute. However, i_version
* can go backwards on a regular file after an unclean shutdown. On its own
* that doesn't necessarily cause a problem, but if i_version goes backwards
@@ -821,13 +824,13 @@ enum fsid_source fsid_source(const struct svc_fh *fhp)
* assume that the new change attr is always logged to stable storage in some
* fashion before the results can be seen.
*/
-u64 nfsd4_change_attribute(const struct kstat *stat, const struct inode *inode)
+u64 nfsd4_change_attribute(const struct kstat *stat)
{
u64 chattr;
if (stat->result_mask & STATX_CHANGE_COOKIE) {
chattr = stat->change_cookie;
- if (S_ISREG(inode->i_mode) &&
+ if (S_ISREG(stat->mode) &&
!(stat->attributes & STATX_ATTR_CHANGE_MONOTONIC)) {
chattr += (u64)stat->ctime.tv_sec << 30;
chattr += stat->ctime.tv_nsec;
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index 5b7394801dc4..876152a91f12 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -297,8 +297,7 @@ static inline void fh_clear_pre_post_attrs(struct svc_fh *fhp)
fhp->fh_pre_saved = false;
}
-u64 nfsd4_change_attribute(const struct kstat *stat,
- const struct inode *inode);
+u64 nfsd4_change_attribute(const struct kstat *stat);
__be32 __must_check fh_fill_pre_attrs(struct svc_fh *fhp);
__be32 fh_fill_post_attrs(struct svc_fh *fhp);
__be32 __must_check fh_fill_both_attrs(struct svc_fh *fhp);
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 35b3564c065f..e16bb3717fb9 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -71,8 +71,8 @@ struct nfsd4_callback {
struct work_struct cb_work;
int cb_seq_status;
int cb_status;
+ int cb_held_slot;
bool cb_need_restart;
- bool cb_holds_slot;
};
struct nfsd4_callback_ops {
@@ -137,10 +137,24 @@ struct nfs4_cpntf_state {
time64_t cpntf_time; /* last time stateid used */
};
+/*
+ * RFC 7862 Section 4.8 states:
+ *
+ * | A copy offload stateid will be valid until either (A) the client
+ * | or server restarts or (B) the client returns the resource by
+ * | issuing an OFFLOAD_CANCEL operation or the client replies to a
+ * | CB_OFFLOAD operation.
+ *
+ * Because a client might not reply to a CB_OFFLOAD, or a reply
+ * might get lost due to connection loss, NFSD purges async copy
+ * state after a short period to prevent it from accumulating
+ * over time.
+ */
+#define NFSD_COPY_INITIAL_TTL 10
+
struct nfs4_cb_fattr {
struct nfsd4_callback ncf_getattr;
u32 ncf_cb_status;
- u32 ncf_cb_bmap[1];
/* from CB_GETATTR reply */
u64 ncf_cb_change;
@@ -290,6 +304,9 @@ struct nfsd4_conn {
unsigned char cn_flags;
};
+/* Maximum number of slots that nfsd will use in the backchannel */
+#define NFSD_BC_SLOT_TABLE_SIZE (sizeof(u32) * 8)
+
/*
* Representation of a v4.1+ session. These are refcounted in a similar fashion
* to the nfs4_client. References are only taken when the server is actively
@@ -297,19 +314,19 @@ struct nfsd4_conn {
*/
struct nfsd4_session {
atomic_t se_ref;
+ spinlock_t se_lock;
+ u32 se_cb_slot_avail; /* bitmap of available slots */
+ u32 se_cb_highest_slot; /* highest slot client wants */
+ u32 se_cb_prog;
+ bool se_dead;
struct list_head se_hash; /* hash by sessionid */
struct list_head se_perclnt;
-/* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */
-#define NFS4_SESSION_DEAD 0x010
- u32 se_flags;
struct nfs4_client *se_client;
struct nfs4_sessionid se_sessionid;
struct nfsd4_channel_attrs se_fchannel;
- struct nfsd4_channel_attrs se_bchannel;
struct nfsd4_cb_sec se_cb_sec;
struct list_head se_conns;
- u32 se_cb_prog;
- u32 se_cb_seq_nr;
+ u32 se_cb_seq_nr[NFSD_BC_SLOT_TABLE_SIZE];
struct nfsd4_slot *se_slots[]; /* forward channel slots */
};
@@ -443,9 +460,6 @@ struct nfs4_client {
*/
struct dentry *cl_nfsd_info_dentry;
- /* for nfs41 callbacks */
- /* We currently support a single back channel with a single slot */
- unsigned long cl_cb_slot_busy;
struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */
/* wait here for slots */
struct net *net;
@@ -742,6 +756,8 @@ extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
extern bool nfsd4_run_cb(struct nfsd4_callback *cb);
extern void nfsd4_shutdown_callback(struct nfs4_client *);
extern void nfsd4_shutdown_copy(struct nfs4_client *clp);
+void nfsd4_async_copy_reaper(struct nfsd_net *nn);
+bool nfsd4_has_active_async_copies(struct nfs4_client *clp);
extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(struct xdr_netobj name,
struct xdr_netobj princhash, struct nfsd_net *nn);
extern bool nfs4_has_reclaimed_state(struct xdr_netobj name, struct nfsd_net *nn);
@@ -784,5 +800,5 @@ static inline bool try_to_expire_client(struct nfs4_client *clp)
}
extern __be32 nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp,
- struct dentry *dentry, bool *file_modified, u64 *size);
+ struct dentry *dentry, struct nfs4_delegation **pdp);
#endif /* NFSD4_STATE_H */
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index b8470d4cbe99..696c89f68a9e 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -79,7 +79,7 @@ DEFINE_NFSD_XDR_ERR_EVENT(cant_encode);
{ NFSD_MAY_READ, "READ" }, \
{ NFSD_MAY_SATTR, "SATTR" }, \
{ NFSD_MAY_TRUNC, "TRUNC" }, \
- { NFSD_MAY_LOCK, "LOCK" }, \
+ { NFSD_MAY_NLM, "NLM" }, \
{ NFSD_MAY_OWNER_OVERRIDE, "OWNER_OVERRIDE" }, \
{ NFSD_MAY_LOCAL_ACCESS, "LOCAL_ACCESS" }, \
{ NFSD_MAY_BYPASS_GSS_ON_ROOT, "BYPASS_GSS_ON_ROOT" }, \
@@ -163,7 +163,7 @@ TRACE_EVENT(nfsd_compound_decode_err,
__entry->opnum, __entry->status)
);
-TRACE_EVENT(nfsd_compound_encode_err,
+DECLARE_EVENT_CLASS(nfsd_compound_err_class,
TP_PROTO(
const struct svc_rqst *rqstp,
u32 opnum,
@@ -184,6 +184,18 @@ TRACE_EVENT(nfsd_compound_encode_err,
__entry->opnum, __entry->status)
);
+#define DEFINE_NFSD_COMPOUND_ERR_EVENT(name) \
+DEFINE_EVENT(nfsd_compound_err_class, nfsd_compound_##name##_err, \
+ TP_PROTO( \
+ const struct svc_rqst *rqstp, \
+ u32 opnum, \
+ __be32 status \
+ ), \
+ TP_ARGS(rqstp, opnum, status))
+
+DEFINE_NFSD_COMPOUND_ERR_EVENT(op);
+DEFINE_NFSD_COMPOUND_ERR_EVENT(encode);
+
#define show_fs_file_type(x) \
__print_symbolic(x, \
{ S_IFLNK, "LNK" }, \
@@ -1685,7 +1697,7 @@ TRACE_EVENT(nfsd_cb_free_slot,
__entry->cl_id = sid->clientid.cl_id;
__entry->seqno = sid->sequence;
__entry->reserved = sid->reserved;
- __entry->slot_seqno = session->se_cb_seq_nr;
+ __entry->slot_seqno = session->se_cb_seq_nr[cb->cb_held_slot];
),
TP_printk(SUNRPC_TRACE_TASK_SPECIFIER
" sessionid=%08x:%08x:%08x:%08x new slot seqno=%u",
@@ -2232,7 +2244,7 @@ TRACE_EVENT(nfsd_copy_done,
)
);
-TRACE_EVENT(nfsd_copy_async_done,
+DECLARE_EVENT_CLASS(nfsd_copy_async_done_class,
TP_PROTO(
const struct nfsd4_copy *copy
),
@@ -2301,6 +2313,15 @@ TRACE_EVENT(nfsd_copy_async_done,
)
);
+#define DEFINE_COPY_ASYNC_DONE_EVENT(name) \
+DEFINE_EVENT(nfsd_copy_async_done_class, \
+ nfsd_copy_async_##name, \
+ TP_PROTO(const struct nfsd4_copy *copy), \
+ TP_ARGS(copy))
+
+DEFINE_COPY_ASYNC_DONE_EVENT(done);
+DEFINE_COPY_ASYNC_DONE_EVENT(cancel);
+
#endif /* _NFSD_TRACE_H */
#undef TRACE_INCLUDE_PATH
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d6d4f2a0e898..29cb7b812d71 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -35,7 +35,6 @@
#include "xdr3.h"
#ifdef CONFIG_NFSD_V4
-#include "../internal.h"
#include "acl.h"
#include "idmap.h"
#include "xdr4.h"
@@ -321,7 +320,7 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
err = nfsd_lookup_dentry(rqstp, fhp, name, len, &exp, &dentry);
if (err)
return err;
- err = check_nfsd_access(exp, rqstp);
+ err = check_nfsd_access(exp, rqstp, false);
if (err)
goto out;
/*
@@ -861,8 +860,7 @@ int nfsd_open_break_lease(struct inode *inode, int access)
* N.B. After this call fhp needs an fh_put
*/
static int
-__nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
- int may_flags, struct file **filp)
+__nfsd_open(struct svc_fh *fhp, umode_t type, int may_flags, struct file **filp)
{
struct path path;
struct inode *inode;
@@ -932,7 +930,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
retry:
err = fh_verify(rqstp, fhp, type, may_flags);
if (!err) {
- host_err = __nfsd_open(rqstp, fhp, type, may_flags, filp);
+ host_err = __nfsd_open(fhp, type, may_flags, filp);
if (host_err == -EOPENSTALE && !retried) {
retried = true;
fh_put(fhp);
@@ -945,7 +943,6 @@ retry:
/**
* nfsd_open_verified - Open a regular file for the filecache
- * @rqstp: RPC request
* @fhp: NFS filehandle of the file to open
* @may_flags: internal permission flags
* @filp: OUT: open "struct file *"
@@ -953,10 +950,9 @@ retry:
* Returns zero on success, or a negative errno value.
*/
int
-nfsd_open_verified(struct svc_rqst *rqstp, struct svc_fh *fhp, int may_flags,
- struct file **filp)
+nfsd_open_verified(struct svc_fh *fhp, int may_flags, struct file **filp)
{
- return __nfsd_open(rqstp, fhp, S_IFREG, may_flags, filp);
+ return __nfsd_open(fhp, S_IFREG, may_flags, filp);
}
/*
@@ -2509,7 +2505,7 @@ nfsd_permission(struct svc_cred *cred, struct svc_export *exp,
(acc & NFSD_MAY_EXEC)? " exec" : "",
(acc & NFSD_MAY_SATTR)? " sattr" : "",
(acc & NFSD_MAY_TRUNC)? " trunc" : "",
- (acc & NFSD_MAY_LOCK)? " lock" : "",
+ (acc & NFSD_MAY_NLM)? " nlm" : "",
(acc & NFSD_MAY_OWNER_OVERRIDE)? " owneroverride" : "",
inode->i_mode,
IS_IMMUTABLE(inode)? " immut" : "",
@@ -2534,16 +2530,6 @@ nfsd_permission(struct svc_cred *cred, struct svc_export *exp,
if ((acc & NFSD_MAY_TRUNC) && IS_APPEND(inode))
return nfserr_perm;
- if (acc & NFSD_MAY_LOCK) {
- /* If we cannot rely on authentication in NLM requests,
- * just allow locks, otherwise require read permission, or
- * ownership
- */
- if (exp->ex_flags & NFSEXP_NOAUTHNLM)
- return 0;
- else
- acc = NFSD_MAY_READ | NFSD_MAY_OWNER_OVERRIDE;
- }
/*
* The file owner always gets access permission for accesses that
* would normally be checked at open time. This is to make
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index 3ff146522556..f9b09b842856 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -20,7 +20,7 @@
#define NFSD_MAY_READ 0x004 /* == MAY_READ */
#define NFSD_MAY_SATTR 0x008
#define NFSD_MAY_TRUNC 0x010
-#define NFSD_MAY_LOCK 0x020
+#define NFSD_MAY_NLM 0x020 /* request is from lockd */
#define NFSD_MAY_MASK 0x03f
/* extra hints to permission and open routines: */
@@ -114,8 +114,8 @@ __be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
int nfsd_open_break_lease(struct inode *, int);
__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
int, struct file **);
-int nfsd_open_verified(struct svc_rqst *rqstp, struct svc_fh *fhp,
- int may_flags, struct file **filp);
+int nfsd_open_verified(struct svc_fh *fhp, int may_flags,
+ struct file **filp);
__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
struct file *file, loff_t offset,
unsigned long *count,
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 2a21a7662e03..382cc1389396 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -567,6 +567,7 @@ struct nfsd4_exchange_id {
struct xdr_netobj nii_domain;
struct xdr_netobj nii_name;
struct timespec64 nii_time;
+ char *server_impl_name;
};
struct nfsd4_sequence {
@@ -675,6 +676,7 @@ struct nfsd4_cb_offload {
struct nfsd4_callback co_cb;
struct nfsd42_write_res co_res;
__be32 co_nfserr;
+ unsigned int co_retries;
struct knfsd_fh co_fh;
};
@@ -693,12 +695,16 @@ struct nfsd4_copy {
#define NFSD4_COPY_F_SYNCHRONOUS (2)
#define NFSD4_COPY_F_COMMITTED (3)
#define NFSD4_COPY_F_COMPLETED (4)
+#define NFSD4_COPY_F_OFFLOAD_DONE (5)
/* response */
__be32 nfserr;
struct nfsd42_write_res cp_res;
struct knfsd_fh fh;
+ /* offload callback */
+ struct nfsd4_cb_offload cp_cb_offload;
+
struct nfs4_client *cp_clp;
struct nfsd_file *nf_src;
@@ -709,6 +715,7 @@ struct nfsd4_copy {
struct list_head copies;
struct task_struct *copy_task;
refcount_t refcount;
+ unsigned int cp_ttl;
struct nfsd4_ssc_umount_item *ss_nsui;
struct nfs_fh c_fh;
@@ -930,6 +937,7 @@ extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, union nfsd4_op_u *u);
extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, union nfsd4_op_u *u);
+void nfsd4_exchange_id_release(union nfsd4_op_u *u);
extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, union nfsd4_op_u *u);
extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *,
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