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-rw-r--r--fs/nfsd/Kconfig3
-rw-r--r--fs/nfsd/filecache.c2
-rw-r--r--fs/nfsd/nfs4callback.c104
-rw-r--r--fs/nfsd/nfs4proc.c6
-rw-r--r--fs/nfsd/nfs4recover.c23
-rw-r--r--fs/nfsd/nfs4state.c19
-rw-r--r--fs/nfsd/nfs4xdr.c2
-rw-r--r--fs/nfsd/nfsd.h3
-rw-r--r--fs/nfsd/nfssvc.c3
-rw-r--r--fs/nfsd/state.h1
-rw-r--r--fs/nfsd/vfs.c20
-rw-r--r--fs/nfsd/vfs.h2
12 files changed, 136 insertions, 52 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 10cefb0c07c7..f2f81561ebb6 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -73,7 +73,8 @@ config NFSD_V4
select NFSD_V3
select FS_POSIX_ACL
select SUNRPC_GSS
- select CRYPTO
+ select CRYPTO_MD5
+ select CRYPTO_SHA256
select GRACE_PERIOD
help
This option enables support in your system's NFS server for
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index ef55e9b1cd4e..32a9bf22ac08 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -685,8 +685,6 @@ nfsd_file_cache_purge(struct net *net)
void
nfsd_file_cache_shutdown(void)
{
- LIST_HEAD(dispose);
-
set_bit(NFSD_FILE_SHUTDOWN, &nfsd_file_lru_flags);
lease_unregister_notifier(&nfsd_file_lease_notifier);
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 524111420b48..24534db87e86 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -826,6 +826,31 @@ static int max_cb_time(struct net *net)
return max(nn->nfsd4_lease/10, (time_t)1) * HZ;
}
+static struct workqueue_struct *callback_wq;
+
+static bool nfsd4_queue_cb(struct nfsd4_callback *cb)
+{
+ return queue_work(callback_wq, &cb->cb_work);
+}
+
+static void nfsd41_cb_inflight_begin(struct nfs4_client *clp)
+{
+ atomic_inc(&clp->cl_cb_inflight);
+}
+
+static void nfsd41_cb_inflight_end(struct nfs4_client *clp)
+{
+
+ if (atomic_dec_and_test(&clp->cl_cb_inflight))
+ wake_up_var(&clp->cl_cb_inflight);
+}
+
+static void nfsd41_cb_inflight_wait_complete(struct nfs4_client *clp)
+{
+ wait_var_event(&clp->cl_cb_inflight,
+ !atomic_read(&clp->cl_cb_inflight));
+}
+
static const struct cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc_clnt *client, struct nfsd4_session *ses)
{
if (clp->cl_minorversion == 0) {
@@ -937,14 +962,21 @@ static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
clp->cl_cb_state = NFSD4_CB_UP;
}
+static void nfsd4_cb_probe_release(void *calldata)
+{
+ struct nfs4_client *clp = container_of(calldata, struct nfs4_client, cl_cb_null);
+
+ nfsd41_cb_inflight_end(clp);
+
+}
+
static const struct rpc_call_ops nfsd4_cb_probe_ops = {
/* XXX: release method to ensure we set the cb channel down if
* necessary on early failure? */
.rpc_call_done = nfsd4_cb_probe_done,
+ .rpc_release = nfsd4_cb_probe_release,
};
-static struct workqueue_struct *callback_wq;
-
/*
* Poke the callback thread to process any updates to the callback
* parameters, and send a null probe.
@@ -975,9 +1007,12 @@ void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
* If the slot is available, then mark it busy. Otherwise, set the
* thread for sleeping on the callback RPC wait queue.
*/
-static bool nfsd41_cb_get_slot(struct nfs4_client *clp, struct rpc_task *task)
+static bool nfsd41_cb_get_slot(struct nfsd4_callback *cb, struct rpc_task *task)
{
- if (test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
+ struct nfs4_client *clp = cb->cb_clp;
+
+ if (!cb->cb_holds_slot &&
+ test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
rpc_sleep_on(&clp->cl_cb_waitq, task, NULL);
/* Race breaker */
if (test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
@@ -986,9 +1021,31 @@ static bool nfsd41_cb_get_slot(struct nfs4_client *clp, struct rpc_task *task)
}
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;
+
+ if (cb->cb_holds_slot) {
+ cb->cb_holds_slot = false;
+ clear_bit(0, &clp->cl_cb_slot_busy);
+ rpc_wake_up_next(&clp->cl_cb_waitq);
+ }
+}
+
+static void nfsd41_destroy_cb(struct nfsd4_callback *cb)
+{
+ struct nfs4_client *clp = cb->cb_clp;
+
+ nfsd41_cb_release_slot(cb);
+ if (cb->cb_ops && cb->cb_ops->release)
+ cb->cb_ops->release(cb);
+ nfsd41_cb_inflight_end(clp);
+}
+
/*
* TODO: cb_sequence should support referring call lists, cachethis, multiple
* slots, and mark callback channel down on communication errors.
@@ -1005,11 +1062,8 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
*/
cb->cb_seq_status = 1;
cb->cb_status = 0;
- if (minorversion) {
- if (!cb->cb_holds_slot && !nfsd41_cb_get_slot(clp, task))
- return;
- cb->cb_holds_slot = true;
- }
+ if (minorversion && !nfsd41_cb_get_slot(cb, task))
+ return;
rpc_call_start(task);
}
@@ -1072,13 +1126,12 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
}
break;
default:
+ nfsd4_mark_cb_fault(cb->cb_clp, cb->cb_seq_status);
dprintk("%s: unprocessed error %d\n", __func__,
cb->cb_seq_status);
}
- cb->cb_holds_slot = false;
- clear_bit(0, &clp->cl_cb_slot_busy);
- rpc_wake_up_next(&clp->cl_cb_waitq);
+ nfsd41_cb_release_slot(cb);
dprintk("%s: freed slot, new seqid=%d\n", __func__,
clp->cl_cb_session->se_cb_seq_nr);
@@ -1091,8 +1144,10 @@ retry_nowait:
ret = false;
goto out;
need_restart:
- task->tk_status = 0;
- cb->cb_need_restart = true;
+ if (!test_bit(NFSD4_CLIENT_CB_KILL, &clp->cl_flags)) {
+ task->tk_status = 0;
+ cb->cb_need_restart = true;
+ }
return false;
}
@@ -1134,9 +1189,9 @@ static void nfsd4_cb_release(void *calldata)
struct nfsd4_callback *cb = calldata;
if (cb->cb_need_restart)
- nfsd4_run_cb(cb);
+ nfsd4_queue_cb(cb);
else
- cb->cb_ops->release(cb);
+ nfsd41_destroy_cb(cb);
}
@@ -1170,6 +1225,7 @@ void nfsd4_shutdown_callback(struct nfs4_client *clp)
*/
nfsd4_run_cb(&clp->cl_cb_null);
flush_workqueue(callback_wq);
+ nfsd41_cb_inflight_wait_complete(clp);
}
/* requires cl_lock: */
@@ -1187,6 +1243,12 @@ static struct nfsd4_conn * __nfsd4_find_backchannel(struct nfs4_client *clp)
return NULL;
}
+/*
+ * Note there isn't a lot of locking in this code; instead we depend on
+ * the fact that it is run from the callback_wq, which won't run two
+ * work items at once. So, for example, callback_wq handles all access
+ * of cl_cb_client and all calls to rpc_create or rpc_shutdown_client.
+ */
static void nfsd4_process_cb_update(struct nfsd4_callback *cb)
{
struct nfs4_cb_conn conn;
@@ -1255,8 +1317,7 @@ nfsd4_run_cb_work(struct work_struct *work)
clnt = clp->cl_cb_client;
if (!clnt) {
/* Callback channel broken, or client killed; give up: */
- if (cb->cb_ops && cb->cb_ops->release)
- cb->cb_ops->release(cb);
+ nfsd41_destroy_cb(cb);
return;
}
@@ -1265,6 +1326,7 @@ nfsd4_run_cb_work(struct work_struct *work)
*/
if (!cb->cb_ops && clp->cl_minorversion) {
clp->cl_cb_state = NFSD4_CB_UP;
+ nfsd41_destroy_cb(cb);
return;
}
@@ -1290,5 +1352,9 @@ void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
void nfsd4_run_cb(struct nfsd4_callback *cb)
{
- queue_work(callback_wq, &cb->cb_work);
+ struct nfs4_client *clp = cb->cb_clp;
+
+ nfsd41_cb_inflight_begin(clp);
+ if (!nfsd4_queue_cb(cb))
+ nfsd41_cb_inflight_end(clp);
}
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 4e3e77b76411..4798667af647 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1077,7 +1077,8 @@ nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
status = nfsd4_clone_file_range(src->nf_file, clone->cl_src_pos,
- dst->nf_file, clone->cl_dst_pos, clone->cl_count);
+ dst->nf_file, clone->cl_dst_pos, clone->cl_count,
+ EX_ISSYNC(cstate->current_fh.fh_export));
nfsd_file_put(dst);
nfsd_file_put(src);
@@ -1297,7 +1298,8 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
out:
return status;
out_err:
- cleanup_async_copy(async_copy);
+ if (async_copy)
+ cleanup_async_copy(async_copy);
goto out;
}
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index cdc75ad4438b..2481e7662128 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -1578,6 +1578,7 @@ nfsd4_cld_tracking_init(struct net *net)
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
bool running;
int retries = 10;
+ struct crypto_shash *tfm;
status = nfs4_cld_state_init(net);
if (status)
@@ -1586,11 +1587,6 @@ nfsd4_cld_tracking_init(struct net *net)
status = __nfsd4_init_cld_pipe(net);
if (status)
goto err_shutdown;
- nn->cld_net->cn_tfm = crypto_alloc_shash("sha256", 0, 0);
- if (IS_ERR(nn->cld_net->cn_tfm)) {
- status = PTR_ERR(nn->cld_net->cn_tfm);
- goto err_remove;
- }
/*
* rpc pipe upcalls take 30 seconds to time out, so we don't want to
@@ -1607,6 +1603,12 @@ nfsd4_cld_tracking_init(struct net *net)
status = -ETIMEDOUT;
goto err_remove;
}
+ tfm = crypto_alloc_shash("sha256", 0, 0);
+ if (IS_ERR(tfm)) {
+ status = PTR_ERR(tfm);
+ goto err_remove;
+ }
+ nn->cld_net->cn_tfm = tfm;
status = nfsd4_cld_get_version(nn);
if (status == -EOPNOTSUPP)
@@ -1850,19 +1852,14 @@ nfsd4_umh_cltrack_upcall(char *cmd, char *arg, char *env0, char *env1)
static char *
bin_to_hex_dup(const unsigned char *src, int srclen)
{
- int i;
- char *buf, *hex;
+ char *buf;
/* +1 for terminating NULL */
- buf = kmalloc((srclen * 2) + 1, GFP_KERNEL);
+ buf = kzalloc((srclen * 2) + 1, GFP_KERNEL);
if (!buf)
return buf;
- hex = buf;
- for (i = 0; i < srclen; i++) {
- sprintf(hex, "%2.2x", *src++);
- hex += 2;
- }
+ bin2hex(buf, src, srclen);
return buf;
}
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c65aeaa812d4..369e574c5092 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2382,10 +2382,10 @@ static int nfs4_show_open(struct seq_file *s, struct nfs4_stid *st)
access = bmap_to_share_mode(ols->st_access_bmap);
deny = bmap_to_share_mode(ols->st_deny_bmap);
- seq_printf(s, "access: \%s\%s, ",
+ seq_printf(s, "access: %s%s, ",
access & NFS4_SHARE_ACCESS_READ ? "r" : "-",
access & NFS4_SHARE_ACCESS_WRITE ? "w" : "-");
- seq_printf(s, "deny: \%s\%s, ",
+ seq_printf(s, "deny: %s%s, ",
deny & NFS4_SHARE_ACCESS_READ ? "r" : "-",
deny & NFS4_SHARE_ACCESS_WRITE ? "w" : "-");
@@ -3548,12 +3548,17 @@ static bool replay_matches_cache(struct svc_rqst *rqstp,
(bool)seq->cachethis)
return false;
/*
- * If there's an error than the reply can have fewer ops than
- * the call. But if we cached a reply with *more* ops than the
- * call you're sending us now, then this new call is clearly not
- * really a replay of the old one:
+ * If there's an error then the reply can have fewer ops than
+ * the call.
*/
- if (slot->sl_opcnt < argp->opcnt)
+ if (slot->sl_opcnt < argp->opcnt && !slot->sl_status)
+ return false;
+ /*
+ * But if we cached a reply with *more* ops than the call you're
+ * sending us now, then this new call is clearly not really a
+ * replay of the old one:
+ */
+ if (slot->sl_opcnt > argp->opcnt)
return false;
/* This is the only check explicitly called by spec: */
if (!same_creds(&rqstp->rq_cred, &slot->sl_cred))
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index b09237431ae2..d2dc4c0e22e8 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3452,7 +3452,6 @@ static __be32 nfsd4_encode_splice_read(
struct xdr_stream *xdr = &resp->xdr;
struct xdr_buf *buf = xdr->buf;
u32 eof;
- long len;
int space_left;
__be32 nfserr;
__be32 *p = xdr->p - 2;
@@ -3461,7 +3460,6 @@ static __be32 nfsd4_encode_splice_read(
if (xdr->end - xdr->p < 1)
return nfserr_resource;
- len = maxcount;
nfserr = nfsd_splice_read(read->rd_rqstp, read->rd_fhp,
file, read->rd_offset, &maxcount, &eof);
read->rd_length = maxcount;
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index af2947551e9c..57b93d95fa5c 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -280,7 +280,8 @@ void nfsd_lockd_shutdown(void);
#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
#define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED)
#define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS)
-#define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
+#define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
+#define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN)
/* error codes for internal use */
/* if a request fails due to kmalloc failure, it gets dropped.
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index fdf7ed4bd5dd..e8bee8ff30c5 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -95,12 +95,11 @@ static const struct svc_version *nfsd_acl_version[] = {
#define NFSD_ACL_MINVERS 2
#define NFSD_ACL_NRVERS ARRAY_SIZE(nfsd_acl_version)
-static const struct svc_version *nfsd_acl_versions[NFSD_ACL_NRVERS];
static struct svc_program nfsd_acl_program = {
.pg_prog = NFS_ACL_PROGRAM,
.pg_nvers = NFSD_ACL_NRVERS,
- .pg_vers = nfsd_acl_versions,
+ .pg_vers = nfsd_acl_version,
.pg_name = "nfsacl",
.pg_class = "nfsd",
.pg_stats = &nfsd_acl_svcstats,
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 46f56afb6cb8..d61b83b9654c 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -367,6 +367,7 @@ struct nfs4_client {
struct net *net;
struct list_head async_copies; /* list of async copies */
spinlock_t async_lock; /* lock for async copies */
+ atomic_t cl_cb_inflight; /* Outstanding callbacks */
};
/* struct nfs4_client_reset
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index bd0a385df3fc..c0dc491537a6 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -525,7 +525,7 @@ __be32 nfsd4_set_nfs4_label(struct svc_rqst *rqstp, struct svc_fh *fhp,
#endif
__be32 nfsd4_clone_file_range(struct file *src, u64 src_pos, struct file *dst,
- u64 dst_pos, u64 count)
+ u64 dst_pos, u64 count, bool sync)
{
loff_t cloned;
@@ -534,6 +534,12 @@ __be32 nfsd4_clone_file_range(struct file *src, u64 src_pos, struct file *dst,
return nfserrno(cloned);
if (count && cloned != count)
return nfserrno(-EINVAL);
+ if (sync) {
+ loff_t dst_end = count ? dst_pos + count - 1 : LLONG_MAX;
+ int status = vfs_fsync_range(dst, dst_pos, dst_end, 0);
+ if (status < 0)
+ return nfserrno(status);
+ }
return 0;
}
@@ -1809,7 +1815,17 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
out_drop_write:
fh_drop_write(fhp);
out_nfserr:
- err = nfserrno(host_err);
+ if (host_err == -EBUSY) {
+ /* name is mounted-on. There is no perfect
+ * error status.
+ */
+ if (nfsd_v4client(rqstp))
+ err = nfserr_file_open;
+ else
+ err = nfserr_acces;
+ } else {
+ err = nfserrno(host_err);
+ }
out:
return err;
}
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index a13fd9d7e1f5..cc110a10bfe8 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -56,7 +56,7 @@ __be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
struct file *, loff_t, loff_t, int);
__be32 nfsd4_clone_file_range(struct file *, u64, struct file *,
- u64, u64);
+ u64, u64, bool);
#endif /* CONFIG_NFSD_V4 */
__be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *,
char *name, int len, struct iattr *attrs,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.