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-rw-r--r--fs/nfsd/lockd.c2
-rw-r--r--fs/nfsd/netns.h2
-rw-r--r--fs/nfsd/nfs3xdr.c2
-rw-r--r--fs/nfsd/nfs4callback.c6
-rw-r--r--fs/nfsd/nfs4layouts.c39
-rw-r--r--fs/nfsd/nfs4proc.c67
-rw-r--r--fs/nfsd/nfs4recover.c18
-rw-r--r--fs/nfsd/nfs4state.c70
-rw-r--r--fs/nfsd/nfs4xdr.c29
-rw-r--r--fs/nfsd/nfsfh.h27
-rw-r--r--fs/nfsd/nfssvc.c75
-rw-r--r--fs/nfsd/state.h8
-rw-r--r--fs/nfsd/trace.h41
-rw-r--r--fs/nfsd/vfs.c50
-rw-r--r--fs/nfsd/vfs.h2
-rw-r--r--fs/nfsd/xdr4.h10
16 files changed, 363 insertions, 85 deletions
diff --git a/fs/nfsd/lockd.c b/fs/nfsd/lockd.c
index 77e7a5cca888..1a03bc3059e8 100644
--- a/fs/nfsd/lockd.c
+++ b/fs/nfsd/lockd.c
@@ -58,7 +58,7 @@ nlm_fclose(struct file *filp)
fput(filp);
}
-static struct nlmsvc_binding nfsd_nlm_ops = {
+static const struct nlmsvc_binding nfsd_nlm_ops = {
.fopen = nlm_fopen, /* open file for locking */
.fclose = nlm_fclose, /* close file */
};
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index d8b16c2568f3..5fbf3bbd00d0 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -92,7 +92,7 @@ struct nfsd_net {
struct file *rec_file;
bool in_grace;
- struct nfsd4_client_tracking_ops *client_tracking_ops;
+ const struct nfsd4_client_tracking_ops *client_tracking_ops;
time_t nfsd4_lease;
time_t nfsd4_grace;
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 00575d776d91..2246454dec76 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -823,7 +823,7 @@ compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp,
} else
dchild = dget(dparent);
} else
- dchild = lookup_one_len(name, dparent, namlen);
+ dchild = lookup_one_len_unlocked(name, dparent, namlen);
if (IS_ERR(dchild))
return rv;
if (d_mountpoint(dchild))
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index e7f50c4081d6..7389cb1d7409 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -792,12 +792,16 @@ static void warn_no_callback_path(struct nfs4_client *clp, int reason)
static void nfsd4_mark_cb_down(struct nfs4_client *clp, int reason)
{
+ if (test_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags))
+ return;
clp->cl_cb_state = NFSD4_CB_DOWN;
warn_no_callback_path(clp, reason);
}
static void nfsd4_mark_cb_fault(struct nfs4_client *clp, int reason)
{
+ if (test_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags))
+ return;
clp->cl_cb_state = NFSD4_CB_FAULT;
warn_no_callback_path(clp, reason);
}
@@ -1143,7 +1147,7 @@ nfsd4_run_cb_work(struct work_struct *work)
}
void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
- struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op)
+ const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op)
{
cb->cb_clp = clp;
cb->cb_msg.rpc_proc = &nfs4_cb_procedures[op];
diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c
index c9d6c715c0fb..ce2d010d3b17 100644
--- a/fs/nfsd/nfs4layouts.c
+++ b/fs/nfsd/nfs4layouts.c
@@ -22,7 +22,7 @@ struct nfs4_layout {
static struct kmem_cache *nfs4_layout_cache;
static struct kmem_cache *nfs4_layout_stateid_cache;
-static struct nfsd4_callback_ops nfsd4_cb_layout_ops;
+static const struct nfsd4_callback_ops nfsd4_cb_layout_ops;
static const struct lock_manager_operations nfsd4_layouts_lm_ops;
const struct nfsd4_layout_ops *nfsd4_layout_ops[LAYOUT_TYPE_MAX] = {
@@ -624,24 +624,39 @@ nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task)
{
struct nfs4_layout_stateid *ls =
container_of(cb, struct nfs4_layout_stateid, ls_recall);
+ struct nfsd_net *nn;
+ ktime_t now, cutoff;
LIST_HEAD(reaplist);
+
switch (task->tk_status) {
case 0:
- return 1;
+ case -NFS4ERR_DELAY:
+ /*
+ * Anything left? If not, then call it done. Note that we don't
+ * take the spinlock since this is an optimization and nothing
+ * should get added until the cb counter goes to zero.
+ */
+ if (list_empty(&ls->ls_layouts))
+ return 1;
+
+ /* Poll the client until it's done with the layout */
+ now = ktime_get();
+ nn = net_generic(ls->ls_stid.sc_client->net, nfsd_net_id);
+
+ /* Client gets 2 lease periods to return it */
+ cutoff = ktime_add_ns(task->tk_start,
+ nn->nfsd4_lease * NSEC_PER_SEC * 2);
+
+ if (ktime_before(now, cutoff)) {
+ rpc_delay(task, HZ/100); /* 10 mili-seconds */
+ return 0;
+ }
+ /* Fallthrough */
case -NFS4ERR_NOMATCHING_LAYOUT:
trace_layout_recall_done(&ls->ls_stid.sc_stateid);
task->tk_status = 0;
return 1;
- case -NFS4ERR_DELAY:
- /* Poll the client until it's done with the layout */
- /* FIXME: cap number of retries.
- * The pnfs standard states that we need to only expire
- * the client after at-least "lease time" .eg lease-time * 2
- * when failing to communicate a recall
- */
- rpc_delay(task, HZ/100); /* 10 mili-seconds */
- return 0;
default:
/*
* Unknown error or non-responding client, we'll need to fence.
@@ -665,7 +680,7 @@ nfsd4_cb_layout_release(struct nfsd4_callback *cb)
nfs4_put_stid(&ls->ls_stid);
}
-static struct nfsd4_callback_ops nfsd4_cb_layout_ops = {
+static const struct nfsd4_callback_ops nfsd4_cb_layout_ops = {
.prepare = nfsd4_cb_layout_prepare,
.done = nfsd4_cb_layout_done,
.release = nfsd4_cb_layout_release,
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index a9f096c7e99f..4cba7865f496 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -55,10 +55,10 @@ nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u
struct inode *inode = d_inode(resfh->fh_dentry);
int status;
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
status = security_inode_setsecctx(resfh->fh_dentry,
label->data, label->len);
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
if (status)
/*
@@ -774,8 +774,9 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
/* check stateid */
- status = nfs4_preprocess_stateid_op(rqstp, cstate, &read->rd_stateid,
- RD_STATE, &read->rd_filp, &read->rd_tmp_file);
+ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
+ &read->rd_stateid, RD_STATE,
+ &read->rd_filp, &read->rd_tmp_file);
if (status) {
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
goto out;
@@ -921,7 +922,8 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
status = nfs4_preprocess_stateid_op(rqstp, cstate,
- &setattr->sa_stateid, WR_STATE, NULL, NULL);
+ &cstate->current_fh, &setattr->sa_stateid,
+ WR_STATE, NULL, NULL);
if (status) {
dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
return status;
@@ -985,8 +987,8 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (write->wr_offset >= OFFSET_MAX)
return nfserr_inval;
- status = nfs4_preprocess_stateid_op(rqstp, cstate, stateid, WR_STATE,
- &filp, NULL);
+ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
+ stateid, WR_STATE, &filp, NULL);
if (status) {
dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
return status;
@@ -1010,13 +1012,54 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
}
static __be32
+nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_clone *clone)
+{
+ struct file *src, *dst;
+ __be32 status;
+
+ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh,
+ &clone->cl_src_stateid, RD_STATE,
+ &src, NULL);
+ if (status) {
+ dprintk("NFSD: %s: couldn't process src stateid!\n", __func__);
+ goto out;
+ }
+
+ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
+ &clone->cl_dst_stateid, WR_STATE,
+ &dst, NULL);
+ if (status) {
+ dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__);
+ goto out_put_src;
+ }
+
+ /* fix up for NFS-specific error code */
+ if (!S_ISREG(file_inode(src)->i_mode) ||
+ !S_ISREG(file_inode(dst)->i_mode)) {
+ status = nfserr_wrong_type;
+ goto out_put_dst;
+ }
+
+ status = nfsd4_clone_file_range(src, clone->cl_src_pos,
+ dst, clone->cl_dst_pos, clone->cl_count);
+
+out_put_dst:
+ fput(dst);
+out_put_src:
+ fput(src);
+out:
+ return status;
+}
+
+static __be32
nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_fallocate *fallocate, int flags)
{
__be32 status = nfserr_notsupp;
struct file *file;
- status = nfs4_preprocess_stateid_op(rqstp, cstate,
+ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
&fallocate->falloc_stateid,
WR_STATE, &file, NULL);
if (status != nfs_ok) {
@@ -1055,7 +1098,7 @@ nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
__be32 status;
struct file *file;
- status = nfs4_preprocess_stateid_op(rqstp, cstate,
+ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
&seek->seek_stateid,
RD_STATE, &file, NULL);
if (status) {
@@ -2279,6 +2322,12 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_name = "OP_DEALLOCATE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
+ [OP_CLONE] = {
+ .op_func = (nfsd4op_func)nfsd4_clone,
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
+ .op_name = "OP_CLONE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
+ },
[OP_SEEK] = {
.op_func = (nfsd4op_func)nfsd4_seek,
.op_name = "OP_SEEK",
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index e3d47091b191..dc8ebecf5618 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -192,7 +192,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
dir = nn->rec_file->f_path.dentry;
/* lock the parent */
- mutex_lock(&d_inode(dir)->i_mutex);
+ inode_lock(d_inode(dir));
dentry = lookup_one_len(dname, dir, HEXDIR_LEN-1);
if (IS_ERR(dentry)) {
@@ -213,7 +213,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
out_put:
dput(dentry);
out_unlock:
- mutex_unlock(&d_inode(dir)->i_mutex);
+ inode_unlock(d_inode(dir));
if (status == 0) {
if (nn->in_grace) {
crp = nfs4_client_to_reclaim(dname, nn);
@@ -286,7 +286,7 @@ nfsd4_list_rec_dir(recdir_func *f, struct nfsd_net *nn)
}
status = iterate_dir(nn->rec_file, &ctx.ctx);
- mutex_lock_nested(&d_inode(dir)->i_mutex, I_MUTEX_PARENT);
+ inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
list_for_each_entry_safe(entry, tmp, &ctx.names, list) {
if (!status) {
@@ -302,7 +302,7 @@ nfsd4_list_rec_dir(recdir_func *f, struct nfsd_net *nn)
list_del(&entry->list);
kfree(entry);
}
- mutex_unlock(&d_inode(dir)->i_mutex);
+ inode_unlock(d_inode(dir));
nfs4_reset_creds(original_cred);
list_for_each_entry_safe(entry, tmp, &ctx.names, list) {
@@ -322,7 +322,7 @@ nfsd4_unlink_clid_dir(char *name, int namlen, struct nfsd_net *nn)
dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
dir = nn->rec_file->f_path.dentry;
- mutex_lock_nested(&d_inode(dir)->i_mutex, I_MUTEX_PARENT);
+ inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
dentry = lookup_one_len(name, dir, namlen);
if (IS_ERR(dentry)) {
status = PTR_ERR(dentry);
@@ -335,7 +335,7 @@ nfsd4_unlink_clid_dir(char *name, int namlen, struct nfsd_net *nn)
out:
dput(dentry);
out_unlock:
- mutex_unlock(&d_inode(dir)->i_mutex);
+ inode_unlock(d_inode(dir));
return status;
}
@@ -631,7 +631,7 @@ nfsd4_check_legacy_client(struct nfs4_client *clp)
return -ENOENT;
}
-static struct nfsd4_client_tracking_ops nfsd4_legacy_tracking_ops = {
+static const struct nfsd4_client_tracking_ops nfsd4_legacy_tracking_ops = {
.init = nfsd4_legacy_tracking_init,
.exit = nfsd4_legacy_tracking_exit,
.create = nfsd4_create_clid_dir,
@@ -1050,7 +1050,7 @@ out_err:
printk(KERN_ERR "NFSD: Unable to end grace period: %d\n", ret);
}
-static struct nfsd4_client_tracking_ops nfsd4_cld_tracking_ops = {
+static const struct nfsd4_client_tracking_ops nfsd4_cld_tracking_ops = {
.init = nfsd4_init_cld_pipe,
.exit = nfsd4_remove_cld_pipe,
.create = nfsd4_cld_create,
@@ -1394,7 +1394,7 @@ nfsd4_umh_cltrack_grace_done(struct nfsd_net *nn)
kfree(legacy);
}
-static struct nfsd4_client_tracking_ops nfsd4_umh_tracking_ops = {
+static const struct nfsd4_client_tracking_ops nfsd4_umh_tracking_ops = {
.init = nfsd4_umh_cltrack_init,
.exit = NULL,
.create = nfsd4_umh_cltrack_create,
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 6b800b5b8fed..c484a2b6cd10 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -98,7 +98,7 @@ static struct kmem_cache *odstate_slab;
static void free_session(struct nfsd4_session *);
-static struct nfsd4_callback_ops nfsd4_cb_recall_ops;
+static const struct nfsd4_callback_ops nfsd4_cb_recall_ops;
static bool is_session_dead(struct nfsd4_session *ses)
{
@@ -1857,15 +1857,28 @@ static void copy_clid(struct nfs4_client *target, struct nfs4_client *source)
target->cl_clientid.cl_id = source->cl_clientid.cl_id;
}
-static int copy_cred(struct svc_cred *target, struct svc_cred *source)
+int strdup_if_nonnull(char **target, char *source)
{
- if (source->cr_principal) {
- target->cr_principal =
- kstrdup(source->cr_principal, GFP_KERNEL);
- if (target->cr_principal == NULL)
+ if (source) {
+ *target = kstrdup(source, GFP_KERNEL);
+ if (!*target)
return -ENOMEM;
} else
- target->cr_principal = NULL;
+ *target = NULL;
+ return 0;
+}
+
+static int copy_cred(struct svc_cred *target, struct svc_cred *source)
+{
+ int ret;
+
+ ret = strdup_if_nonnull(&target->cr_principal, source->cr_principal);
+ if (ret)
+ return ret;
+ ret = strdup_if_nonnull(&target->cr_raw_principal,
+ source->cr_raw_principal);
+ if (ret)
+ return ret;
target->cr_flavor = source->cr_flavor;
target->cr_uid = source->cr_uid;
target->cr_gid = source->cr_gid;
@@ -1969,6 +1982,9 @@ static bool mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp)
return false;
if (!svc_rqst_integrity_protected(rqstp))
return false;
+ if (cl->cl_cred.cr_raw_principal)
+ return 0 == strcmp(cl->cl_cred.cr_raw_principal,
+ cr->cr_raw_principal);
if (!cr->cr_principal)
return false;
return 0 == strcmp(cl->cl_cred.cr_principal, cr->cr_principal);
@@ -2240,7 +2256,8 @@ nfsd4_store_cache_entry(struct nfsd4_compoundres *resp)
base = resp->cstate.data_offset;
slot->sl_datalen = buf->len - base;
if (read_bytes_from_xdr_buf(buf, base, slot->sl_data, slot->sl_datalen))
- WARN("%s: sessions DRC could not cache compound\n", __func__);
+ WARN(1, "%s: sessions DRC could not cache compound\n",
+ __func__);
return;
}
@@ -2365,10 +2382,27 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
if (exid->flags & ~EXCHGID4_FLAG_MASK_A)
return nfserr_inval;
+ new = create_client(exid->clname, rqstp, &verf);
+ if (new == NULL)
+ return nfserr_jukebox;
+
switch (exid->spa_how) {
case SP4_MACH_CRED:
- if (!svc_rqst_integrity_protected(rqstp))
- return nfserr_inval;
+ if (!svc_rqst_integrity_protected(rqstp)) {
+ status = nfserr_inval;
+ goto out_nolock;
+ }
+ /*
+ * Sometimes userspace doesn't give us a principal.
+ * Which is a bug, really. Anyway, we can't enforce
+ * MACH_CRED in that case, better to give up now:
+ */
+ if (!new->cl_cred.cr_principal &&
+ !new->cl_cred.cr_raw_principal) {
+ status = nfserr_serverfault;
+ goto out_nolock;
+ }
+ new->cl_mach_cred = true;
case SP4_NONE:
break;
default: /* checked by xdr code */
@@ -2377,10 +2411,6 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
return nfserr_encr_alg_unsupp;
}
- new = create_client(exid->clname, rqstp, &verf);
- if (new == NULL)
- return nfserr_jukebox;
-
/* Cases below refer to rfc 5661 section 18.35.4: */
spin_lock(&nn->client_lock);
conf = find_confirmed_client_by_name(&exid->clname, nn);
@@ -2442,7 +2472,6 @@ out_new:
goto out;
}
new->cl_minorversion = cstate->minorversion;
- new->cl_mach_cred = (exid->spa_how == SP4_MACH_CRED);
gen_clid(new, nn);
add_to_unconfirmed(new);
@@ -2460,6 +2489,7 @@ out_copy:
out:
spin_unlock(&nn->client_lock);
+out_nolock:
if (new)
expire_client(new);
if (unconf)
@@ -3648,7 +3678,7 @@ static void nfsd4_cb_recall_release(struct nfsd4_callback *cb)
nfs4_put_stid(&dp->dl_stid);
}
-static struct nfsd4_callback_ops nfsd4_cb_recall_ops = {
+static const struct nfsd4_callback_ops nfsd4_cb_recall_ops = {
.prepare = nfsd4_cb_recall_prepare,
.done = nfsd4_cb_recall_done,
.release = nfsd4_cb_recall_release,
@@ -4541,8 +4571,7 @@ static void
laundromat_main(struct work_struct *laundry)
{
time_t t;
- struct delayed_work *dwork = container_of(laundry, struct delayed_work,
- work);
+ struct delayed_work *dwork = to_delayed_work(laundry);
struct nfsd_net *nn = container_of(dwork, struct nfsd_net,
laundromat_work);
@@ -4797,10 +4826,9 @@ nfs4_check_file(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfs4_stid *s,
*/
__be32
nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
- struct nfsd4_compound_state *cstate, stateid_t *stateid,
- int flags, struct file **filpp, bool *tmp_file)
+ struct nfsd4_compound_state *cstate, struct svc_fh *fhp,
+ stateid_t *stateid, int flags, struct file **filpp, bool *tmp_file)
{
- struct svc_fh *fhp = &cstate->current_fh;
struct inode *ino = d_inode(fhp->fh_dentry);
struct net *net = SVC_NET(rqstp);
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 51c9e9ca39a4..d6ef0955a979 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1675,6 +1675,25 @@ nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp,
}
static __be32
+nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone)
+{
+ DECODE_HEAD;
+
+ status = nfsd4_decode_stateid(argp, &clone->cl_src_stateid);
+ if (status)
+ return status;
+ status = nfsd4_decode_stateid(argp, &clone->cl_dst_stateid);
+ if (status)
+ return status;
+
+ READ_BUF(8 + 8 + 8);
+ p = xdr_decode_hyper(p, &clone->cl_src_pos);
+ p = xdr_decode_hyper(p, &clone->cl_dst_pos);
+ p = xdr_decode_hyper(p, &clone->cl_count);
+ DECODE_TAIL;
+}
+
+static __be32
nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek)
{
DECODE_HEAD;
@@ -1785,6 +1804,7 @@ static nfsd4_dec nfsd4_dec_ops[] = {
[OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek,
[OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone,
};
static inline bool
@@ -2838,14 +2858,14 @@ nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd,
__be32 nfserr;
int ignore_crossmnt = 0;
- dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
+ dentry = lookup_one_len_unlocked(name, cd->rd_fhp->fh_dentry, namlen);
if (IS_ERR(dentry))
return nfserrno(PTR_ERR(dentry));
if (d_really_is_negative(dentry)) {
/*
- * nfsd_buffered_readdir drops the i_mutex between
- * readdir and calling this callback, leaving a window
- * where this directory entry could have gone away.
+ * we're not holding the i_mutex here, so there's
+ * a window where this directory entry could have gone
+ * away.
*/
dput(dentry);
return nfserr_noent;
@@ -4292,6 +4312,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
[OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop,
[OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek,
[OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop,
};
/*
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index 2087bae17582..f84fe6bf9aee 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -7,6 +7,7 @@
#ifndef _LINUX_NFSD_NFSFH_H
#define _LINUX_NFSD_NFSFH_H
+#include <linux/crc32.h>
#include <linux/sunrpc/svc.h>
#include <uapi/linux/nfsd/nfsfh.h>
@@ -205,6 +206,28 @@ static inline bool fh_fsid_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
return true;
}
+#ifdef CONFIG_CRC32
+/**
+ * knfsd_fh_hash - calculate the crc32 hash for the filehandle
+ * @fh - pointer to filehandle
+ *
+ * returns a crc32 hash for the filehandle that is compatible with
+ * the one displayed by "wireshark".
+ */
+
+static inline u32
+knfsd_fh_hash(struct knfsd_fh *fh)
+{
+ return ~crc32_le(0xFFFFFFFF, (unsigned char *)&fh->fh_base, fh->fh_size);
+}
+#else
+static inline u32
+knfsd_fh_hash(struct knfsd_fh *fh)
+{
+ return 0;
+}
+#endif
+
#ifdef CONFIG_NFSD_V3
/*
* The wcc data stored in current_fh should be cleared
@@ -265,7 +288,7 @@ fh_lock_nested(struct svc_fh *fhp, unsigned int subclass)
}
inode = d_inode(dentry);
- mutex_lock_nested(&inode->i_mutex, subclass);
+ inode_lock_nested(inode, subclass);
fill_pre_wcc(fhp);
fhp->fh_locked = true;
}
@@ -284,7 +307,7 @@ fh_unlock(struct svc_fh *fhp)
{
if (fhp->fh_locked) {
fill_post_wcc(fhp);
- mutex_unlock(&d_inode(fhp->fh_dentry)->i_mutex);
+ inode_unlock(d_inode(fhp->fh_dentry));
fhp->fh_locked = false;
}
}
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index ad4e2377dd63..45007acaf364 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -14,9 +14,13 @@
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/svcsock.h>
+#include <linux/sunrpc/svc_xprt.h>
#include <linux/lockd/bind.h>
#include <linux/nfsacl.h>
#include <linux/seq_file.h>
+#include <linux/inetdevice.h>
+#include <net/addrconf.h>
+#include <net/ipv6.h>
#include <net/net_namespace.h>
#include "nfsd.h"
#include "cache.h"
@@ -306,22 +310,81 @@ static void nfsd_shutdown_net(struct net *net)
nfsd_shutdown_generic();
}
+static int nfsd_inetaddr_event(struct notifier_block *this, unsigned long event,
+ void *ptr)
+{
+ struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+ struct net_device *dev = ifa->ifa_dev->dev;
+ struct net *net = dev_net(dev);
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct sockaddr_in sin;
+
+ if (event != NETDEV_DOWN)
+ goto out;
+
+ if (nn->nfsd_serv) {
+ dprintk("nfsd_inetaddr_event: removed %pI4\n", &ifa->ifa_local);
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = ifa->ifa_local;
+ svc_age_temp_xprts_now(nn->nfsd_serv, (struct sockaddr *)&sin);
+ }
+
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block nfsd_inetaddr_notifier = {
+ .notifier_call = nfsd_inetaddr_event,
+};
+
+#if IS_ENABLED(CONFIG_IPV6)
+static int nfsd_inet6addr_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
+ struct net_device *dev = ifa->idev->dev;
+ struct net *net = dev_net(dev);
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct sockaddr_in6 sin6;
+
+ if (event != NETDEV_DOWN)
+ goto out;
+
+ if (nn->nfsd_serv) {
+ dprintk("nfsd_inet6addr_event: removed %pI6\n", &ifa->addr);
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_addr = ifa->addr;
+ svc_age_temp_xprts_now(nn->nfsd_serv, (struct sockaddr *)&sin6);
+ }
+
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block nfsd_inet6addr_notifier = {
+ .notifier_call = nfsd_inet6addr_event,
+};
+#endif
+
static void nfsd_last_thread(struct svc_serv *serv, struct net *net)
{
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ unregister_inetaddr_notifier(&nfsd_inetaddr_notifier);
+#if IS_ENABLED(CONFIG_IPV6)
+ unregister_inet6addr_notifier(&nfsd_inet6addr_notifier);
+#endif
/*
* write_ports can create the server without actually starting
* any threads--if we get shut down before any threads are
* started, then nfsd_last_thread will be run before any of this
- * other initialization has been done.
+ * other initialization has been done except the rpcb information.
*/
+ svc_rpcb_cleanup(serv, net);
if (!nn->nfsd_net_up)
return;
- nfsd_shutdown_net(net);
-
- svc_rpcb_cleanup(serv, net);
+ nfsd_shutdown_net(net);
printk(KERN_WARNING "nfsd: last server has exited, flushing export "
"cache\n");
nfsd_export_flush(net);
@@ -425,6 +488,10 @@ int nfsd_create_serv(struct net *net)
}
set_max_drc();
+ register_inetaddr_notifier(&nfsd_inetaddr_notifier);
+#if IS_ENABLED(CONFIG_IPV6)
+ register_inet6addr_notifier(&nfsd_inet6addr_notifier);
+#endif
do_gettimeofday(&nn->nfssvc_boot); /* record boot time */
return 0;
}
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 77fdf4de91ba..c050c53036a6 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -65,7 +65,7 @@ struct nfsd4_callback {
struct nfs4_client *cb_clp;
u32 cb_minorversion;
struct rpc_message cb_msg;
- struct nfsd4_callback_ops *cb_ops;
+ const struct nfsd4_callback_ops *cb_ops;
struct work_struct cb_work;
int cb_seq_status;
int cb_status;
@@ -578,8 +578,8 @@ struct nfsd4_compound_state;
struct nfsd_net;
extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
- struct nfsd4_compound_state *cstate, stateid_t *stateid,
- int flags, struct file **filp, bool *tmp_file);
+ struct nfsd4_compound_state *cstate, struct svc_fh *fhp,
+ stateid_t *stateid, int flags, struct file **filp, bool *tmp_file);
__be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
stateid_t *stateid, unsigned char typemask,
struct nfs4_stid **s, struct nfsd_net *nn);
@@ -599,7 +599,7 @@ extern void nfsd4_probe_callback(struct nfs4_client *clp);
extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);
extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);
extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
- struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op);
+ const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op);
extern void nfsd4_run_cb(struct nfsd4_callback *cb);
extern int nfsd4_create_callback_queue(void);
extern void nfsd4_destroy_callback_queue(void);
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 0befe762762b..3287041905da 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -8,6 +8,47 @@
#define _NFSD_TRACE_H
#include <linux/tracepoint.h>
+#include "nfsfh.h"
+
+DECLARE_EVENT_CLASS(nfsd_io_class,
+ TP_PROTO(struct svc_rqst *rqstp,
+ struct svc_fh *fhp,
+ loff_t offset,
+ int len),
+ TP_ARGS(rqstp, fhp, offset, len),
+ TP_STRUCT__entry(
+ __field(__be32, xid)
+ __field_struct(struct knfsd_fh, fh)
+ __field(loff_t, offset)
+ __field(int, len)
+ ),
+ TP_fast_assign(
+ __entry->xid = rqstp->rq_xid,
+ fh_copy_shallow(&__entry->fh, &fhp->fh_handle);
+ __entry->offset = offset;
+ __entry->len = len;
+ ),
+ TP_printk("xid=0x%x fh=0x%x offset=%lld len=%d",
+ __be32_to_cpu(__entry->xid), knfsd_fh_hash(&__entry->fh),
+ __entry->offset, __entry->len)
+)
+
+#define DEFINE_NFSD_IO_EVENT(name) \
+DEFINE_EVENT(nfsd_io_class, name, \
+ TP_PROTO(struct svc_rqst *rqstp, \
+ struct svc_fh *fhp, \
+ loff_t offset, \
+ int len), \
+ TP_ARGS(rqstp, fhp, offset, len))
+
+DEFINE_NFSD_IO_EVENT(read_start);
+DEFINE_NFSD_IO_EVENT(read_opened);
+DEFINE_NFSD_IO_EVENT(read_io_done);
+DEFINE_NFSD_IO_EVENT(read_done);
+DEFINE_NFSD_IO_EVENT(write_start);
+DEFINE_NFSD_IO_EVENT(write_opened);
+DEFINE_NFSD_IO_EVENT(write_io_done);
+DEFINE_NFSD_IO_EVENT(write_done);
#include "state.h"
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 994d66fbb446..5d2a57e4c03a 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -36,12 +36,14 @@
#endif /* CONFIG_NFSD_V3 */
#ifdef CONFIG_NFSD_V4
+#include "../internal.h"
#include "acl.h"
#include "idmap.h"
#endif /* CONFIG_NFSD_V4 */
#include "nfsd.h"
#include "vfs.h"
+#include "trace.h"
#define NFSDDBG_FACILITY NFSDDBG_FILEOP
@@ -217,10 +219,16 @@ nfsd_lookup_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp,
host_err = PTR_ERR(dentry);
if (IS_ERR(dentry))
goto out_nfserr;
- /*
- * check if we have crossed a mount point ...
- */
if (nfsd_mountpoint(dentry, exp)) {
+ /*
+ * We don't need the i_mutex after all. It's
+ * still possible we could open this (regular
+ * files can be mountpoints too), but the
+ * i_mutex is just there to prevent renames of
+ * something that we might be about to delegate,
+ * and a mountpoint won't be renamed:
+ */
+ fh_unlock(fhp);
if ((host_err = nfsd_cross_mnt(rqstp, &dentry, &exp))) {
dput(dentry);
goto out_nfserr;
@@ -485,9 +493,9 @@ __be32 nfsd4_set_nfs4_label(struct svc_rqst *rqstp, struct svc_fh *fhp,
dentry = fhp->fh_dentry;
- mutex_lock(&d_inode(dentry)->i_mutex);
+ inode_lock(d_inode(dentry));
host_error = security_inode_setsecctx(dentry, label->data, label->len);
- mutex_unlock(&d_inode(dentry)->i_mutex);
+ inode_unlock(d_inode(dentry));
return nfserrno(host_error);
}
#else
@@ -498,6 +506,13 @@ __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)
+{
+ return nfserrno(vfs_clone_file_range(src, src_pos, dst, dst_pos,
+ count));
+}
+
__be32 nfsd4_vfs_fallocate(struct svc_rqst *rqstp, struct svc_fh *fhp,
struct file *file, loff_t offset, loff_t len,
int flags)
@@ -983,16 +998,23 @@ __be32 nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
struct raparms *ra;
__be32 err;
+ trace_read_start(rqstp, fhp, offset, vlen);
err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
if (err)
return err;
ra = nfsd_init_raparms(file);
+
+ trace_read_opened(rqstp, fhp, offset, vlen);
err = nfsd_vfs_read(rqstp, file, offset, vec, vlen, count);
+ trace_read_io_done(rqstp, fhp, offset, vlen);
+
if (ra)
nfsd_put_raparams(file, ra);
fput(file);
+ trace_read_done(rqstp, fhp, offset, vlen);
+
return err;
}
@@ -1008,24 +1030,31 @@ nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
{
__be32 err = 0;
+ trace_write_start(rqstp, fhp, offset, vlen);
+
if (file) {
err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry,
NFSD_MAY_WRITE|NFSD_MAY_OWNER_OVERRIDE);
if (err)
goto out;
+ trace_write_opened(rqstp, fhp, offset, vlen);
err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen, cnt,
stablep);
+ trace_write_io_done(rqstp, fhp, offset, vlen);
} else {
err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_WRITE, &file);
if (err)
goto out;
+ trace_write_opened(rqstp, fhp, offset, vlen);
if (cnt)
err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen,
cnt, stablep);
+ trace_write_io_done(rqstp, fhp, offset, vlen);
fput(file);
}
out:
+ trace_write_done(rqstp, fhp, offset, vlen);
return err;
}
@@ -1809,7 +1838,6 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
offset = *offsetp;
while (1) {
- struct inode *dir_inode = file_inode(file);
unsigned int reclen;
cdp->err = nfserr_eof; /* will be cleared on successful read */
@@ -1828,15 +1856,6 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
if (!size)
break;
- /*
- * Various filldir functions may end up calling back into
- * lookup_one_len() and the file system's ->lookup() method.
- * These expect i_mutex to be held, as it would within readdir.
- */
- host_err = mutex_lock_killable(&dir_inode->i_mutex);
- if (host_err)
- break;
-
de = (struct buffered_dirent *)buf.dirent;
while (size > 0) {
offset = de->offset;
@@ -1853,7 +1872,6 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
size -= reclen;
de = (struct buffered_dirent *)((char *)de + reclen);
}
- mutex_unlock(&dir_inode->i_mutex);
if (size > 0) /* We bailed out early */
break;
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index fcfc48cbe136..c11ba316f23f 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -56,6 +56,8 @@ __be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
struct xdr_netobj *);
__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);
#endif /* CONFIG_NFSD_V4 */
__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
char *name, int len, struct iattr *attrs,
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index ce7362c88b48..d9554813e58a 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -491,6 +491,15 @@ struct nfsd4_fallocate {
u64 falloc_length;
};
+struct nfsd4_clone {
+ /* request */
+ stateid_t cl_src_stateid;
+ stateid_t cl_dst_stateid;
+ u64 cl_src_pos;
+ u64 cl_dst_pos;
+ u64 cl_count;
+};
+
struct nfsd4_seek {
/* request */
stateid_t seek_stateid;
@@ -555,6 +564,7 @@ struct nfsd4_op {
/* NFSv4.2 */
struct nfsd4_fallocate allocate;
struct nfsd4_fallocate deallocate;
+ struct nfsd4_clone clone;
struct nfsd4_seek seek;
} u;
struct nfs4_replay * replay;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.