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authorDavid S. Miller <davem@davemloft.net>2012-04-10 20:30:45 +0200
committerDavid S. Miller <davem@davemloft.net>2012-04-10 20:30:45 +0200
commit06eb4eafbdc0796d741d139a44f1253278da8611 (patch)
treefbdb44317130c371928154c9e6903e699fe2b995 /fs/nfsd
parentwiznet: Fix Kconfig dependencies. (diff)
parentMake the "word-at-a-time" helper functions more commonly usable (diff)
downloadlinux-06eb4eafbdc0796d741d139a44f1253278da8611.tar.xz
linux-06eb4eafbdc0796d741d139a44f1253278da8611.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/current_stateid.h28
-rw-r--r--fs/nfsd/export.c2
-rw-r--r--fs/nfsd/netns.h34
-rw-r--r--fs/nfsd/nfs4callback.c19
-rw-r--r--fs/nfsd/nfs4idmap.c53
-rw-r--r--fs/nfsd/nfs4proc.c118
-rw-r--r--fs/nfsd/nfs4recover.c647
-rw-r--r--fs/nfsd/nfs4state.c365
-rw-r--r--fs/nfsd/nfs4xdr.c132
-rw-r--r--fs/nfsd/nfsctl.c22
-rw-r--r--fs/nfsd/nfsd.h7
-rw-r--r--fs/nfsd/nfssvc.c44
-rw-r--r--fs/nfsd/state.h47
-rw-r--r--fs/nfsd/vfs.c33
-rw-r--r--fs/nfsd/vfs.h2
-rw-r--r--fs/nfsd/xdr4.h34
16 files changed, 1311 insertions, 276 deletions
diff --git a/fs/nfsd/current_stateid.h b/fs/nfsd/current_stateid.h
new file mode 100644
index 000000000000..4123551208d8
--- /dev/null
+++ b/fs/nfsd/current_stateid.h
@@ -0,0 +1,28 @@
+#ifndef _NFSD4_CURRENT_STATE_H
+#define _NFSD4_CURRENT_STATE_H
+
+#include "state.h"
+#include "xdr4.h"
+
+extern void clear_current_stateid(struct nfsd4_compound_state *cstate);
+/*
+ * functions to set current state id
+ */
+extern void nfsd4_set_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *);
+extern void nfsd4_set_openstateid(struct nfsd4_compound_state *, struct nfsd4_open *);
+extern void nfsd4_set_lockstateid(struct nfsd4_compound_state *, struct nfsd4_lock *);
+extern void nfsd4_set_closestateid(struct nfsd4_compound_state *, struct nfsd4_close *);
+
+/*
+ * functions to consume current state id
+ */
+extern void nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *);
+extern void nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *, struct nfsd4_delegreturn *);
+extern void nfsd4_get_freestateid(struct nfsd4_compound_state *, struct nfsd4_free_stateid *);
+extern void nfsd4_get_setattrstateid(struct nfsd4_compound_state *, struct nfsd4_setattr *);
+extern void nfsd4_get_closestateid(struct nfsd4_compound_state *, struct nfsd4_close *);
+extern void nfsd4_get_lockustateid(struct nfsd4_compound_state *, struct nfsd4_locku *);
+extern void nfsd4_get_readstateid(struct nfsd4_compound_state *, struct nfsd4_read *);
+extern void nfsd4_get_writestateid(struct nfsd4_compound_state *, struct nfsd4_write *);
+
+#endif /* _NFSD4_CURRENT_STATE_H */
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index cf8a6bd062fa..8e9689abbc0c 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -87,7 +87,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
struct svc_expkey key;
struct svc_expkey *ek = NULL;
- if (mlen < 1 || mesg[mlen-1] != '\n')
+ if (mesg[mlen - 1] != '\n')
return -EINVAL;
mesg[mlen-1] = 0;
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
new file mode 100644
index 000000000000..12e0cff435b4
--- /dev/null
+++ b/fs/nfsd/netns.h
@@ -0,0 +1,34 @@
+/*
+ * per net namespace data structures for nfsd
+ *
+ * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __NFSD_NETNS_H__
+#define __NFSD_NETNS_H__
+
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+
+struct cld_net;
+
+struct nfsd_net {
+ struct cld_net *cld_net;
+};
+
+extern int nfsd_net_id;
+#endif /* __NFSD_NETNS_H__ */
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 0e262f32ac41..c8e9f637153a 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -645,7 +645,6 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
.timeout = &timeparms,
.program = &cb_program,
.version = 0,
- .authflavor = clp->cl_flavor,
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
};
struct rpc_clnt *client;
@@ -656,6 +655,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
args.client_name = clp->cl_principal;
args.prognumber = conn->cb_prog,
args.protocol = XPRT_TRANSPORT_TCP;
+ args.authflavor = clp->cl_flavor;
clp->cl_cb_ident = conn->cb_ident;
} else {
if (!conn->cb_xprt)
@@ -665,6 +665,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
args.bc_xprt = conn->cb_xprt;
args.prognumber = clp->cl_cb_session->se_cb_prog;
args.protocol = XPRT_TRANSPORT_BC_TCP;
+ args.authflavor = RPC_AUTH_UNIX;
}
/* Create RPC client */
client = rpc_create(&args);
@@ -754,9 +755,9 @@ static void do_probe_callback(struct nfs4_client *clp)
*/
void nfsd4_probe_callback(struct nfs4_client *clp)
{
- /* XXX: atomicity? Also, should we be using cl_cb_flags? */
+ /* XXX: atomicity? Also, should we be using cl_flags? */
clp->cl_cb_state = NFSD4_CB_UNKNOWN;
- set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags);
+ set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags);
do_probe_callback(clp);
}
@@ -915,7 +916,7 @@ void nfsd4_destroy_callback_queue(void)
/* must be called under the state lock */
void nfsd4_shutdown_callback(struct nfs4_client *clp)
{
- set_bit(NFSD4_CLIENT_KILL, &clp->cl_cb_flags);
+ set_bit(NFSD4_CLIENT_CB_KILL, &clp->cl_flags);
/*
* Note this won't actually result in a null callback;
* instead, nfsd4_do_callback_rpc() will detect the killed
@@ -966,15 +967,15 @@ static void nfsd4_process_cb_update(struct nfsd4_callback *cb)
svc_xprt_put(clp->cl_cb_conn.cb_xprt);
clp->cl_cb_conn.cb_xprt = NULL;
}
- if (test_bit(NFSD4_CLIENT_KILL, &clp->cl_cb_flags))
+ if (test_bit(NFSD4_CLIENT_CB_KILL, &clp->cl_flags))
return;
spin_lock(&clp->cl_lock);
/*
* Only serialized callback code is allowed to clear these
* flags; main nfsd code can only set them:
*/
- BUG_ON(!clp->cl_cb_flags);
- clear_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags);
+ BUG_ON(!(clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK));
+ clear_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags);
memcpy(&conn, &cb->cb_clp->cl_cb_conn, sizeof(struct nfs4_cb_conn));
c = __nfsd4_find_backchannel(clp);
if (c) {
@@ -986,7 +987,7 @@ static void nfsd4_process_cb_update(struct nfsd4_callback *cb)
err = setup_callback_client(clp, &conn, ses);
if (err) {
- warn_no_callback_path(clp, err);
+ nfsd4_mark_cb_down(clp, err);
return;
}
/* Yay, the callback channel's back! Restart any callbacks: */
@@ -1000,7 +1001,7 @@ void nfsd4_do_callback_rpc(struct work_struct *w)
struct nfs4_client *clp = cb->cb_clp;
struct rpc_clnt *clnt;
- if (clp->cl_cb_flags)
+ if (clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK)
nfsd4_process_cb_update(cb);
clnt = clp->cl_cb_client;
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 94096273cd6c..322d11ce06a4 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -41,6 +41,14 @@
#include "nfsd.h"
/*
+ * Turn off idmapping when using AUTH_SYS.
+ */
+static bool nfs4_disable_idmapping = true;
+module_param(nfs4_disable_idmapping, bool, 0644);
+MODULE_PARM_DESC(nfs4_disable_idmapping,
+ "Turn off server's NFSv4 idmapping when using 'sec=sys'");
+
+/*
* Cache entry
*/
@@ -561,28 +569,65 @@ idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
return ret;
}
+static bool
+numeric_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, uid_t *id)
+{
+ int ret;
+ char buf[11];
+
+ if (namelen + 1 > sizeof(buf))
+ /* too long to represent a 32-bit id: */
+ return false;
+ /* Just to make sure it's null-terminated: */
+ memcpy(buf, name, namelen);
+ buf[namelen] = '\0';
+ ret = kstrtouint(name, 10, id);
+ return ret == 0;
+}
+
+static __be32
+do_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, uid_t *id)
+{
+ if (nfs4_disable_idmapping && rqstp->rq_flavor < RPC_AUTH_GSS)
+ if (numeric_name_to_id(rqstp, type, name, namelen, id))
+ return 0;
+ /*
+ * otherwise, fall through and try idmapping, for
+ * backwards compatibility with clients sending names:
+ */
+ return idmap_name_to_id(rqstp, type, name, namelen, id);
+}
+
+static int
+do_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
+{
+ if (nfs4_disable_idmapping && rqstp->rq_flavor < RPC_AUTH_GSS)
+ return sprintf(name, "%u", id);
+ return idmap_id_to_name(rqstp, type, id, name);
+}
+
__be32
nfsd_map_name_to_uid(struct svc_rqst *rqstp, const char *name, size_t namelen,
__u32 *id)
{
- return idmap_name_to_id(rqstp, IDMAP_TYPE_USER, name, namelen, id);
+ return do_name_to_id(rqstp, IDMAP_TYPE_USER, name, namelen, id);
}
__be32
nfsd_map_name_to_gid(struct svc_rqst *rqstp, const char *name, size_t namelen,
__u32 *id)
{
- return idmap_name_to_id(rqstp, IDMAP_TYPE_GROUP, name, namelen, id);
+ return do_name_to_id(rqstp, IDMAP_TYPE_GROUP, name, namelen, id);
}
int
nfsd_map_uid_to_name(struct svc_rqst *rqstp, __u32 id, char *name)
{
- return idmap_id_to_name(rqstp, IDMAP_TYPE_USER, id, name);
+ return do_id_to_name(rqstp, IDMAP_TYPE_USER, id, name);
}
int
nfsd_map_gid_to_name(struct svc_rqst *rqstp, __u32 id, char *name)
{
- return idmap_id_to_name(rqstp, IDMAP_TYPE_GROUP, id, name);
+ return do_id_to_name(rqstp, IDMAP_TYPE_GROUP, id, name);
}
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 896da74ec563..2ed14dfd00a2 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -39,6 +39,7 @@
#include "cache.h"
#include "xdr4.h"
#include "vfs.h"
+#include "current_stateid.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
@@ -192,10 +193,13 @@ static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
static __be32
do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
{
- struct svc_fh resfh;
+ struct svc_fh *resfh;
__be32 status;
- fh_init(&resfh, NFS4_FHSIZE);
+ resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
+ if (!resfh)
+ return nfserr_jukebox;
+ fh_init(resfh, NFS4_FHSIZE);
open->op_truncate = 0;
if (open->op_create) {
@@ -220,7 +224,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
*/
status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
open->op_fname.len, &open->op_iattr,
- &resfh, open->op_createmode,
+ resfh, open->op_createmode,
(u32 *)open->op_verf.data,
&open->op_truncate, &open->op_created);
@@ -234,30 +238,29 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
FATTR4_WORD1_TIME_MODIFY);
} else {
status = nfsd_lookup(rqstp, current_fh,
- open->op_fname.data, open->op_fname.len, &resfh);
+ open->op_fname.data, open->op_fname.len, resfh);
fh_unlock(current_fh);
if (status)
goto out;
- status = nfsd_check_obj_isreg(&resfh);
+ status = nfsd_check_obj_isreg(resfh);
}
if (status)
goto out;
if (is_create_with_attrs(open) && open->op_acl != NULL)
- do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
-
- set_change_info(&open->op_cinfo, current_fh);
- fh_dup2(current_fh, &resfh);
+ do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval);
/* set reply cache */
fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
- &resfh.fh_handle);
+ &resfh->fh_handle);
if (!open->op_created)
- status = do_open_permission(rqstp, current_fh, open,
+ status = do_open_permission(rqstp, resfh, open,
NFSD_MAY_NOP);
-
+ set_change_info(&open->op_cinfo, current_fh);
+ fh_dup2(current_fh, resfh);
out:
- fh_put(&resfh);
+ fh_put(resfh);
+ kfree(resfh);
return status;
}
@@ -310,16 +313,14 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
- /* We don't yet support WANT bits: */
- open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
-
open->op_created = 0;
/*
* RFC5661 18.51.3
* Before RECLAIM_COMPLETE done, server should deny new lock
*/
if (nfsd4_has_session(cstate) &&
- !cstate->session->se_client->cl_firststate &&
+ !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
+ &cstate->session->se_client->cl_flags) &&
open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
return nfserr_grace;
@@ -452,6 +453,10 @@ nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return nfserr_restorefh;
fh_dup2(&cstate->current_fh, &cstate->save_fh);
+ if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
+ memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
+ SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
+ }
return nfs_ok;
}
@@ -463,6 +468,10 @@ nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return nfserr_nofilehandle;
fh_dup2(&cstate->save_fh, &cstate->current_fh);
+ if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
+ memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
+ SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
+ }
return nfs_ok;
}
@@ -481,14 +490,20 @@ nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
&access->ac_supported);
}
+static void gen_boot_verifier(nfs4_verifier *verifier)
+{
+ __be32 verf[2];
+
+ verf[0] = (__be32)nfssvc_boot.tv_sec;
+ verf[1] = (__be32)nfssvc_boot.tv_usec;
+ memcpy(verifier->data, verf, sizeof(verifier->data));
+}
+
static __be32
nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_commit *commit)
{
- u32 *p = (u32 *)commit->co_verf.data;
- *p++ = nfssvc_boot.tv_sec;
- *p++ = nfssvc_boot.tv_usec;
-
+ gen_boot_verifier(&commit->co_verf);
return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
commit->co_count);
}
@@ -865,7 +880,6 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
{
stateid_t *stateid = &write->wr_stateid;
struct file *filp = NULL;
- u32 *p;
__be32 status = nfs_ok;
unsigned long cnt;
@@ -887,9 +901,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
cnt = write->wr_buflen;
write->wr_how_written = write->wr_stable_how;
- p = (u32 *)write->wr_verifier.data;
- *p++ = nfssvc_boot.tv_sec;
- *p++ = nfssvc_boot.tv_usec;
+ gen_boot_verifier(&write->wr_verifier);
status = nfsd_write(rqstp, &cstate->current_fh, filp,
write->wr_offset, rqstp->rq_vec, write->wr_vlen,
@@ -1000,6 +1012,8 @@ static inline void nfsd4_increment_op_stats(u32 opnum)
typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
void *);
typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
+typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
+typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
enum nfsd4_op_flags {
ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
@@ -1025,6 +1039,10 @@ enum nfsd4_op_flags {
* the v4.0 case).
*/
OP_CACHEME = 1 << 6,
+ /*
+ * These are ops which clear current state id.
+ */
+ OP_CLEAR_STATEID = 1 << 7,
};
struct nfsd4_operation {
@@ -1033,11 +1051,15 @@ struct nfsd4_operation {
char *op_name;
/* Try to get response size before operation */
nfsd4op_rsize op_rsize_bop;
+ stateid_setter op_get_currentstateid;
+ stateid_getter op_set_currentstateid;
};
static struct nfsd4_operation nfsd4_ops[];
+#ifdef NFSD_DEBUG
static const char *nfsd4_op_name(unsigned opnum);
+#endif
/*
* Enforce NFSv4.1 COMPOUND ordering rules:
@@ -1215,13 +1237,23 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
if (op->status)
goto encode_op;
- if (opdesc->op_func)
+ if (opdesc->op_func) {
+ if (opdesc->op_get_currentstateid)
+ opdesc->op_get_currentstateid(cstate, &op->u);
op->status = opdesc->op_func(rqstp, cstate, &op->u);
- else
+ } else
BUG_ON(op->status == nfs_ok);
- if (!op->status && need_wrongsec_check(rqstp))
- op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
+ if (!op->status) {
+ if (opdesc->op_set_currentstateid)
+ opdesc->op_set_currentstateid(cstate, &op->u);
+
+ if (opdesc->op_flags & OP_CLEAR_STATEID)
+ clear_current_stateid(cstate);
+
+ if (need_wrongsec_check(rqstp))
+ op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
+ }
encode_op:
/* Only from SEQUENCE */
@@ -1413,6 +1445,8 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_CLOSE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
+ .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
},
[OP_COMMIT] = {
.op_func = (nfsd4op_func)nfsd4_commit,
@@ -1422,7 +1456,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_CREATE] = {
.op_func = (nfsd4op_func)nfsd4_create,
- .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
.op_name = "OP_CREATE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
},
@@ -1431,6 +1465,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_DELEGRETURN",
.op_rsize_bop = nfsd4_only_status_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
},
[OP_GETATTR] = {
.op_func = (nfsd4op_func)nfsd4_getattr,
@@ -1453,6 +1488,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_LOCK",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
+ .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
},
[OP_LOCKT] = {
.op_func = (nfsd4op_func)nfsd4_lockt,
@@ -1463,15 +1499,16 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_LOCKU",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
},
[OP_LOOKUP] = {
.op_func = (nfsd4op_func)nfsd4_lookup,
- .op_flags = OP_HANDLES_WRONGSEC,
+ .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
.op_name = "OP_LOOKUP",
},
[OP_LOOKUPP] = {
.op_func = (nfsd4op_func)nfsd4_lookupp,
- .op_flags = OP_HANDLES_WRONGSEC,
+ .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
.op_name = "OP_LOOKUPP",
},
[OP_NVERIFY] = {
@@ -1483,6 +1520,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
.op_name = "OP_OPEN",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
+ .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
},
[OP_OPEN_CONFIRM] = {
.op_func = (nfsd4op_func)nfsd4_open_confirm,
@@ -1495,25 +1533,30 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_OPEN_DOWNGRADE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
+ .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
},
[OP_PUTFH] = {
.op_func = (nfsd4op_func)nfsd4_putfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
+ | OP_CLEAR_STATEID,
.op_name = "OP_PUTFH",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_PUTPUBFH] = {
.op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
+ | OP_CLEAR_STATEID,
.op_name = "OP_PUTPUBFH",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_PUTROOTFH] = {
.op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
+ | OP_CLEAR_STATEID,
.op_name = "OP_PUTROOTFH",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
@@ -1522,6 +1565,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_READ",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
},
[OP_READDIR] = {
.op_func = (nfsd4op_func)nfsd4_readdir,
@@ -1576,6 +1620,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_name = "OP_SETATTR",
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
},
[OP_SETCLIENTID] = {
.op_func = (nfsd4op_func)nfsd4_setclientid,
@@ -1600,6 +1645,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_WRITE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
+ .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
},
[OP_RELEASE_LOCKOWNER] = {
.op_func = (nfsd4op_func)nfsd4_release_lockowner,
@@ -1674,12 +1720,14 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
};
+#ifdef NFSD_DEBUG
static const char *nfsd4_op_name(unsigned opnum)
{
if (opnum < ARRAY_SIZE(nfsd4_ops))
return nfsd4_ops[opnum].op_name;
return "unknown_operation";
}
+#endif
#define nfsd4_voidres nfsd4_voidargs
struct nfsd4_voidargs { int dummy; };
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 0b3e875d1abd..4767429264a2 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -1,5 +1,6 @@
/*
* Copyright (c) 2004 The Regents of the University of Michigan.
+* Copyright (c) 2012 Jeff Layton <jlayton@redhat.com>
* All rights reserved.
*
* Andy Adamson <andros@citi.umich.edu>
@@ -36,16 +37,34 @@
#include <linux/namei.h>
#include <linux/crypto.h>
#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <net/net_namespace.h>
+#include <linux/sunrpc/rpc_pipe_fs.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/nfsd/cld.h>
#include "nfsd.h"
#include "state.h"
#include "vfs.h"
+#include "netns.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
+/* Declarations */
+struct nfsd4_client_tracking_ops {
+ int (*init)(struct net *);
+ void (*exit)(struct net *);
+ void (*create)(struct nfs4_client *);
+ void (*remove)(struct nfs4_client *);
+ int (*check)(struct nfs4_client *);
+ void (*grace_done)(struct net *, time_t);
+};
+
/* Globals */
static struct file *rec_file;
static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
+static struct nfsd4_client_tracking_ops *client_tracking_ops;
static int
nfs4_save_creds(const struct cred **original_creds)
@@ -117,7 +136,8 @@ out_no_tfm:
return status;
}
-void nfsd4_create_clid_dir(struct nfs4_client *clp)
+static void
+nfsd4_create_clid_dir(struct nfs4_client *clp)
{
const struct cred *original_cred;
char *dname = clp->cl_recdir;
@@ -126,9 +146,8 @@ void nfsd4_create_clid_dir(struct nfs4_client *clp)
dprintk("NFSD: nfsd4_create_clid_dir for \"%s\"\n", dname);
- if (clp->cl_firststate)
+ if (test_and_set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
return;
- clp->cl_firststate = 1;
if (!rec_file)
return;
status = nfs4_save_creds(&original_cred);
@@ -265,19 +284,19 @@ out_unlock:
return status;
}
-void
+static void
nfsd4_remove_clid_dir(struct nfs4_client *clp)
{
const struct cred *original_cred;
int status;
- if (!rec_file || !clp->cl_firststate)
+ if (!rec_file || !test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
return;
status = mnt_want_write_file(rec_file);
if (status)
goto out;
- clp->cl_firststate = 0;
+ clear_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
status = nfs4_save_creds(&original_cred);
if (status < 0)
@@ -292,7 +311,6 @@ out:
if (status)
printk("NFSD: Failed to remove expired client state directory"
" %.*s\n", HEXDIR_LEN, clp->cl_recdir);
- return;
}
static int
@@ -311,8 +329,9 @@ purge_old(struct dentry *parent, struct dentry *child)
return 0;
}
-void
-nfsd4_recdir_purge_old(void) {
+static void
+nfsd4_recdir_purge_old(struct net *net, time_t boot_time)
+{
int status;
if (!rec_file)
@@ -343,7 +362,7 @@ load_recdir(struct dentry *parent, struct dentry *child)
return 0;
}
-int
+static int
nfsd4_recdir_load(void) {
int status;
@@ -361,8 +380,8 @@ nfsd4_recdir_load(void) {
* Hold reference to the recovery directory.
*/
-void
-nfsd4_init_recdir()
+static int
+nfsd4_init_recdir(void)
{
const struct cred *original_cred;
int status;
@@ -377,20 +396,44 @@ nfsd4_init_recdir()
printk("NFSD: Unable to change credentials to find recovery"
" directory: error %d\n",
status);
- return;
+ return status;
}
rec_file = filp_open(user_recovery_dirname, O_RDONLY | O_DIRECTORY, 0);
if (IS_ERR(rec_file)) {
printk("NFSD: unable to find recovery directory %s\n",
user_recovery_dirname);
+ status = PTR_ERR(rec_file);
rec_file = NULL;
}
nfs4_reset_creds(original_cred);
+ return status;
}
-void
+static int
+nfsd4_load_reboot_recovery_data(struct net *net)
+{
+ int status;
+
+ /* XXX: The legacy code won't work in a container */
+ if (net != &init_net) {
+ WARN(1, KERN_ERR "NFSD: attempt to initialize legacy client "
+ "tracking in a container!\n");
+ return -EINVAL;
+ }
+
+ nfs4_lock_state();
+ status = nfsd4_init_recdir();
+ if (!status)
+ status = nfsd4_recdir_load();
+ nfs4_unlock_state();
+ if (status)
+ printk(KERN_ERR "NFSD: Failure reading reboot recovery data\n");
+ return status;
+}
+
+static void
nfsd4_shutdown_recdir(void)
{
if (!rec_file)
@@ -399,6 +442,13 @@ nfsd4_shutdown_recdir(void)
rec_file = NULL;
}
+static void
+nfsd4_legacy_tracking_exit(struct net *net)
+{
+ nfs4_release_reclaim();
+ nfsd4_shutdown_recdir();
+}
+
/*
* Change the NFSv4 recovery directory to recdir.
*/
@@ -425,3 +475,572 @@ nfs4_recoverydir(void)
{
return user_recovery_dirname;
}
+
+static int
+nfsd4_check_legacy_client(struct nfs4_client *clp)
+{
+ /* did we already find that this client is stable? */
+ if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return 0;
+
+ /* look for it in the reclaim hashtable otherwise */
+ if (nfsd4_find_reclaim_client(clp)) {
+ set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+static struct nfsd4_client_tracking_ops nfsd4_legacy_tracking_ops = {
+ .init = nfsd4_load_reboot_recovery_data,
+ .exit = nfsd4_legacy_tracking_exit,
+ .create = nfsd4_create_clid_dir,
+ .remove = nfsd4_remove_clid_dir,
+ .check = nfsd4_check_legacy_client,
+ .grace_done = nfsd4_recdir_purge_old,
+};
+
+/* Globals */
+#define NFSD_PIPE_DIR "nfsd"
+#define NFSD_CLD_PIPE "cld"
+
+/* per-net-ns structure for holding cld upcall info */
+struct cld_net {
+ struct rpc_pipe *cn_pipe;
+ spinlock_t cn_lock;
+ struct list_head cn_list;
+ unsigned int cn_xid;
+};
+
+struct cld_upcall {
+ struct list_head cu_list;
+ struct cld_net *cu_net;
+ struct task_struct *cu_task;
+ struct cld_msg cu_msg;
+};
+
+static int
+__cld_pipe_upcall(struct rpc_pipe *pipe, struct cld_msg *cmsg)
+{
+ int ret;
+ struct rpc_pipe_msg msg;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.data = cmsg;
+ msg.len = sizeof(*cmsg);
+
+ /*
+ * Set task state before we queue the upcall. That prevents
+ * wake_up_process in the downcall from racing with schedule.
+ */
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ ret = rpc_queue_upcall(pipe, &msg);
+ if (ret < 0) {
+ set_current_state(TASK_RUNNING);
+ goto out;
+ }
+
+ schedule();
+ set_current_state(TASK_RUNNING);
+
+ if (msg.errno < 0)
+ ret = msg.errno;
+out:
+ return ret;
+}
+
+static int
+cld_pipe_upcall(struct rpc_pipe *pipe, struct cld_msg *cmsg)
+{
+ int ret;
+
+ /*
+ * -EAGAIN occurs when pipe is closed and reopened while there are
+ * upcalls queued.
+ */
+ do {
+ ret = __cld_pipe_upcall(pipe, cmsg);
+ } while (ret == -EAGAIN);
+
+ return ret;
+}
+
+static ssize_t
+cld_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
+{
+ struct cld_upcall *tmp, *cup;
+ struct cld_msg *cmsg = (struct cld_msg *)src;
+ uint32_t xid;
+ struct nfsd_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info,
+ nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+
+ if (mlen != sizeof(*cmsg)) {
+ dprintk("%s: got %lu bytes, expected %lu\n", __func__, mlen,
+ sizeof(*cmsg));
+ return -EINVAL;
+ }
+
+ /* copy just the xid so we can try to find that */
+ if (copy_from_user(&xid, &cmsg->cm_xid, sizeof(xid)) != 0) {
+ dprintk("%s: error when copying xid from userspace", __func__);
+ return -EFAULT;
+ }
+
+ /* walk the list and find corresponding xid */
+ cup = NULL;
+ spin_lock(&cn->cn_lock);
+ list_for_each_entry(tmp, &cn->cn_list, cu_list) {
+ if (get_unaligned(&tmp->cu_msg.cm_xid) == xid) {
+ cup = tmp;
+ list_del_init(&cup->cu_list);
+ break;
+ }
+ }
+ spin_unlock(&cn->cn_lock);
+
+ /* couldn't find upcall? */
+ if (!cup) {
+ dprintk("%s: couldn't find upcall -- xid=%u\n", __func__, xid);
+ return -EINVAL;
+ }
+
+ if (copy_from_user(&cup->cu_msg, src, mlen) != 0)
+ return -EFAULT;
+
+ wake_up_process(cup->cu_task);
+ return mlen;
+}
+
+static void
+cld_pipe_destroy_msg(struct rpc_pipe_msg *msg)
+{
+ struct cld_msg *cmsg = msg->data;
+ struct cld_upcall *cup = container_of(cmsg, struct cld_upcall,
+ cu_msg);
+
+ /* errno >= 0 means we got a downcall */
+ if (msg->errno >= 0)
+ return;
+
+ wake_up_process(cup->cu_task);
+}
+
+static const struct rpc_pipe_ops cld_upcall_ops = {
+ .upcall = rpc_pipe_generic_upcall,
+ .downcall = cld_pipe_downcall,
+ .destroy_msg = cld_pipe_destroy_msg,
+};
+
+static struct dentry *
+nfsd4_cld_register_sb(struct super_block *sb, struct rpc_pipe *pipe)
+{
+ struct dentry *dir, *dentry;
+
+ dir = rpc_d_lookup_sb(sb, NFSD_PIPE_DIR);
+ if (dir == NULL)
+ return ERR_PTR(-ENOENT);
+ dentry = rpc_mkpipe_dentry(dir, NFSD_CLD_PIPE, NULL, pipe);
+ dput(dir);
+ return dentry;
+}
+
+static void
+nfsd4_cld_unregister_sb(struct rpc_pipe *pipe)
+{
+ if (pipe->dentry)
+ rpc_unlink(pipe->dentry);
+}
+
+static struct dentry *
+nfsd4_cld_register_net(struct net *net, struct rpc_pipe *pipe)
+{
+ struct super_block *sb;
+ struct dentry *dentry;
+
+ sb = rpc_get_sb_net(net);
+ if (!sb)
+ return NULL;
+ dentry = nfsd4_cld_register_sb(sb, pipe);
+ rpc_put_sb_net(net);
+ return dentry;
+}
+
+static void
+nfsd4_cld_unregister_net(struct net *net, struct rpc_pipe *pipe)
+{
+ struct super_block *sb;
+
+ sb = rpc_get_sb_net(net);
+ if (sb) {
+ nfsd4_cld_unregister_sb(pipe);
+ rpc_put_sb_net(net);
+ }
+}
+
+/* Initialize rpc_pipefs pipe for communication with client tracking daemon */
+static int
+nfsd4_init_cld_pipe(struct net *net)
+{
+ int ret;
+ struct dentry *dentry;
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct cld_net *cn;
+
+ if (nn->cld_net)
+ return 0;
+
+ cn = kzalloc(sizeof(*cn), GFP_KERNEL);
+ if (!cn) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ cn->cn_pipe = rpc_mkpipe_data(&cld_upcall_ops, RPC_PIPE_WAIT_FOR_OPEN);
+ if (IS_ERR(cn->cn_pipe)) {
+ ret = PTR_ERR(cn->cn_pipe);
+ goto err;
+ }
+ spin_lock_init(&cn->cn_lock);
+ INIT_LIST_HEAD(&cn->cn_list);
+
+ dentry = nfsd4_cld_register_net(net, cn->cn_pipe);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto err_destroy_data;
+ }
+
+ cn->cn_pipe->dentry = dentry;
+ nn->cld_net = cn;
+ return 0;
+
+err_destroy_data:
+ rpc_destroy_pipe_data(cn->cn_pipe);
+err:
+ kfree(cn);
+ printk(KERN_ERR "NFSD: unable to create nfsdcld upcall pipe (%d)\n",
+ ret);
+ return ret;
+}
+
+static void
+nfsd4_remove_cld_pipe(struct net *net)
+{
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+
+ nfsd4_cld_unregister_net(net, cn->cn_pipe);
+ rpc_destroy_pipe_data(cn->cn_pipe);
+ kfree(nn->cld_net);
+ nn->cld_net = NULL;
+}
+
+static struct cld_upcall *
+alloc_cld_upcall(struct cld_net *cn)
+{
+ struct cld_upcall *new, *tmp;
+
+ new = kzalloc(sizeof(*new), GFP_KERNEL);
+ if (!new)
+ return new;
+
+ /* FIXME: hard cap on number in flight? */
+restart_search:
+ spin_lock(&cn->cn_lock);
+ list_for_each_entry(tmp, &cn->cn_list, cu_list) {
+ if (tmp->cu_msg.cm_xid == cn->cn_xid) {
+ cn->cn_xid++;
+ spin_unlock(&cn->cn_lock);
+ goto restart_search;
+ }
+ }
+ new->cu_task = current;
+ new->cu_msg.cm_vers = CLD_UPCALL_VERSION;
+ put_unaligned(cn->cn_xid++, &new->cu_msg.cm_xid);
+ new->cu_net = cn;
+ list_add(&new->cu_list, &cn->cn_list);
+ spin_unlock(&cn->cn_lock);
+
+ dprintk("%s: allocated xid %u\n", __func__, new->cu_msg.cm_xid);
+
+ return new;
+}
+
+static void
+free_cld_upcall(struct cld_upcall *victim)
+{
+ struct cld_net *cn = victim->cu_net;
+
+ spin_lock(&cn->cn_lock);
+ list_del(&victim->cu_list);
+ spin_unlock(&cn->cn_lock);
+ kfree(victim);
+}
+
+/* Ask daemon to create a new record */
+static void
+nfsd4_cld_create(struct nfs4_client *clp)
+{
+ int ret;
+ struct cld_upcall *cup;
+ /* FIXME: determine net from clp */
+ struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+
+ /* Don't upcall if it's already stored */
+ if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return;
+
+ cup = alloc_cld_upcall(cn);
+ if (!cup) {
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
+ cup->cu_msg.cm_cmd = Cld_Create;
+ cup->cu_msg.cm_u.cm_name.cn_len = clp->cl_name.len;
+ memcpy(cup->cu_msg.cm_u.cm_name.cn_id, clp->cl_name.data,
+ clp->cl_name.len);
+
+ ret = cld_pipe_upcall(cn->cn_pipe, &cup->cu_msg);
+ if (!ret) {
+ ret = cup->cu_msg.cm_status;
+ set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
+ }
+
+ free_cld_upcall(cup);
+out_err:
+ if (ret)
+ printk(KERN_ERR "NFSD: Unable to create client "
+ "record on stable storage: %d\n", ret);
+}
+
+/* Ask daemon to create a new record */
+static void
+nfsd4_cld_remove(struct nfs4_client *clp)
+{
+ int ret;
+ struct cld_upcall *cup;
+ /* FIXME: determine net from clp */
+ struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+
+ /* Don't upcall if it's already removed */
+ if (!test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return;
+
+ cup = alloc_cld_upcall(cn);
+ if (!cup) {
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
+ cup->cu_msg.cm_cmd = Cld_Remove;
+ cup->cu_msg.cm_u.cm_name.cn_len = clp->cl_name.len;
+ memcpy(cup->cu_msg.cm_u.cm_name.cn_id, clp->cl_name.data,
+ clp->cl_name.len);
+
+ ret = cld_pipe_upcall(cn->cn_pipe, &cup->cu_msg);
+ if (!ret) {
+ ret = cup->cu_msg.cm_status;
+ clear_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
+ }
+
+ free_cld_upcall(cup);
+out_err:
+ if (ret)
+ printk(KERN_ERR "NFSD: Unable to remove client "
+ "record from stable storage: %d\n", ret);
+}
+
+/* Check for presence of a record, and update its timestamp */
+static int
+nfsd4_cld_check(struct nfs4_client *clp)
+{
+ int ret;
+ struct cld_upcall *cup;
+ /* FIXME: determine net from clp */
+ struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+
+ /* Don't upcall if one was already stored during this grace pd */
+ if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return 0;
+
+ cup = alloc_cld_upcall(cn);
+ if (!cup) {
+ printk(KERN_ERR "NFSD: Unable to check client record on "
+ "stable storage: %d\n", -ENOMEM);
+ return -ENOMEM;
+ }
+
+ cup->cu_msg.cm_cmd = Cld_Check;
+ cup->cu_msg.cm_u.cm_name.cn_len = clp->cl_name.len;
+ memcpy(cup->cu_msg.cm_u.cm_name.cn_id, clp->cl_name.data,
+ clp->cl_name.len);
+
+ ret = cld_pipe_upcall(cn->cn_pipe, &cup->cu_msg);
+ if (!ret) {
+ ret = cup->cu_msg.cm_status;
+ set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
+ }
+
+ free_cld_upcall(cup);
+ return ret;
+}
+
+static void
+nfsd4_cld_grace_done(struct net *net, time_t boot_time)
+{
+ int ret;
+ struct cld_upcall *cup;
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+
+ cup = alloc_cld_upcall(cn);
+ if (!cup) {
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
+ cup->cu_msg.cm_cmd = Cld_GraceDone;
+ cup->cu_msg.cm_u.cm_gracetime = (int64_t)boot_time;
+ ret = cld_pipe_upcall(cn->cn_pipe, &cup->cu_msg);
+ if (!ret)
+ ret = cup->cu_msg.cm_status;
+
+ free_cld_upcall(cup);
+out_err:
+ if (ret)
+ printk(KERN_ERR "NFSD: Unable to end grace period: %d\n", ret);
+}
+
+static struct nfsd4_client_tracking_ops nfsd4_cld_tracking_ops = {
+ .init = nfsd4_init_cld_pipe,
+ .exit = nfsd4_remove_cld_pipe,
+ .create = nfsd4_cld_create,
+ .remove = nfsd4_cld_remove,
+ .check = nfsd4_cld_check,
+ .grace_done = nfsd4_cld_grace_done,
+};
+
+int
+nfsd4_client_tracking_init(struct net *net)
+{
+ int status;
+ struct path path;
+
+ if (!client_tracking_ops) {
+ client_tracking_ops = &nfsd4_cld_tracking_ops;
+ status = kern_path(nfs4_recoverydir(), LOOKUP_FOLLOW, &path);
+ if (!status) {
+ if (S_ISDIR(path.dentry->d_inode->i_mode))
+ client_tracking_ops =
+ &nfsd4_legacy_tracking_ops;
+ path_put(&path);
+ }
+ }
+
+ status = client_tracking_ops->init(net);
+ if (status) {
+ printk(KERN_WARNING "NFSD: Unable to initialize client "
+ "recovery tracking! (%d)\n", status);
+ client_tracking_ops = NULL;
+ }
+ return status;
+}
+
+void
+nfsd4_client_tracking_exit(struct net *net)
+{
+ if (client_tracking_ops) {
+ client_tracking_ops->exit(net);
+ client_tracking_ops = NULL;
+ }
+}
+
+void
+nfsd4_client_record_create(struct nfs4_client *clp)
+{
+ if (client_tracking_ops)
+ client_tracking_ops->create(clp);
+}
+
+void
+nfsd4_client_record_remove(struct nfs4_client *clp)
+{
+ if (client_tracking_ops)
+ client_tracking_ops->remove(clp);
+}
+
+int
+nfsd4_client_record_check(struct nfs4_client *clp)
+{
+ if (client_tracking_ops)
+ return client_tracking_ops->check(clp);
+
+ return -EOPNOTSUPP;
+}
+
+void
+nfsd4_record_grace_done(struct net *net, time_t boot_time)
+{
+ if (client_tracking_ops)
+ client_tracking_ops->grace_done(net, boot_time);
+}
+
+static int
+rpc_pipefs_event(struct notifier_block *nb, unsigned long event, void *ptr)
+{
+ struct super_block *sb = ptr;
+ struct net *net = sb->s_fs_info;
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct cld_net *cn = nn->cld_net;
+ struct dentry *dentry;
+ int ret = 0;
+
+ if (!try_module_get(THIS_MODULE))
+ return 0;
+
+ if (!cn) {
+ module_put(THIS_MODULE);
+ return 0;
+ }
+
+ switch (event) {
+ case RPC_PIPEFS_MOUNT:
+ dentry = nfsd4_cld_register_sb(sb, cn->cn_pipe);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ break;
+ }
+ cn->cn_pipe->dentry = dentry;
+ break;
+ case RPC_PIPEFS_UMOUNT:
+ if (cn->cn_pipe->dentry)
+ nfsd4_cld_unregister_sb(cn->cn_pipe);
+ break;
+ default:
+ ret = -ENOTSUPP;
+ break;
+ }
+ module_put(THIS_MODULE);
+ return ret;
+}
+
+struct notifier_block nfsd4_cld_block = {
+ .notifier_call = rpc_pipefs_event,
+};
+
+int
+register_cld_notifier(void)
+{
+ return rpc_pipefs_notifier_register(&nfsd4_cld_block);
+}
+
+void
+unregister_cld_notifier(void)
+{
+ rpc_pipefs_notifier_unregister(&nfsd4_cld_block);
+}
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c5cddd659429..1841f8bf845e 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -58,11 +58,15 @@ static const stateid_t one_stateid = {
static const stateid_t zero_stateid = {
/* all fields zero */
};
+static const stateid_t currentstateid = {
+ .si_generation = 1,
+};
static u64 current_sessionid = 1;
#define ZERO_STATEID(stateid) (!memcmp((stateid), &zero_stateid, sizeof(stateid_t)))
#define ONE_STATEID(stateid) (!memcmp((stateid), &one_stateid, sizeof(stateid_t)))
+#define CURRENT_STATEID(stateid) (!memcmp((stateid), &currentstateid, sizeof(stateid_t)))
/* forward declarations */
static int check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner);
@@ -91,6 +95,19 @@ nfs4_lock_state(void)
mutex_lock(&client_mutex);
}
+static void free_session(struct kref *);
+
+/* Must be called under the client_lock */
+static void nfsd4_put_session_locked(struct nfsd4_session *ses)
+{
+ kref_put(&ses->se_ref, free_session);
+}
+
+static void nfsd4_get_session(struct nfsd4_session *ses)
+{
+ kref_get(&ses->se_ref);
+}
+
void
nfs4_unlock_state(void)
{
@@ -605,12 +622,20 @@ hash_sessionid(struct nfs4_sessionid *sessionid)
return sid->sequence % SESSION_HASH_SIZE;
}
+#ifdef NFSD_DEBUG
static inline void
dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid)
{
u32 *ptr = (u32 *)(&sessionid->data[0]);
dprintk("%s: %u:%u:%u:%u\n", fn, ptr[0], ptr[1], ptr[2], ptr[3]);
}
+#else
+static inline void
+dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid)
+{
+}
+#endif
+
static void
gen_sessionid(struct nfsd4_session *ses)
@@ -832,11 +857,12 @@ static void nfsd4_del_conns(struct nfsd4_session *s)
spin_unlock(&clp->cl_lock);
}
-void free_session(struct kref *kref)
+static void free_session(struct kref *kref)
{
struct nfsd4_session *ses;
int mem;
+ BUG_ON(!spin_is_locked(&client_lock));
ses = container_of(kref, struct nfsd4_session, se_ref);
nfsd4_del_conns(ses);
spin_lock(&nfsd_drc_lock);
@@ -847,6 +873,13 @@ void free_session(struct kref *kref)
kfree(ses);
}
+void nfsd4_put_session(struct nfsd4_session *ses)
+{
+ spin_lock(&client_lock);
+ nfsd4_put_session_locked(ses);
+ spin_unlock(&client_lock);
+}
+
static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp, struct nfsd4_create_session *cses)
{
struct nfsd4_session *new;
@@ -894,7 +927,9 @@ static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct n
status = nfsd4_new_conn_from_crses(rqstp, new);
/* whoops: benny points out, status is ignored! (err, or bogus) */
if (status) {
+ spin_lock(&client_lock);
free_session(&new->se_ref);
+ spin_unlock(&client_lock);
return NULL;
}
if (cses->flags & SESSION4_BACK_CHAN) {
@@ -1006,12 +1041,13 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
static inline void
free_client(struct nfs4_client *clp)
{
+ BUG_ON(!spin_is_locked(&client_lock));
while (!list_empty(&clp->cl_sessions)) {
struct nfsd4_session *ses;
ses = list_entry(clp->cl_sessions.next, struct nfsd4_session,
se_perclnt);
list_del(&ses->se_perclnt);
- nfsd4_put_session(ses);
+ nfsd4_put_session_locked(ses);
}
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
@@ -1138,12 +1174,12 @@ static void gen_clid(struct nfs4_client *clp)
static void gen_confirm(struct nfs4_client *clp)
{
+ __be32 verf[2];
static u32 i;
- u32 *p;
- p = (u32 *)clp->cl_confirm.data;
- *p++ = get_seconds();
- *p++ = i++;
+ verf[0] = (__be32)get_seconds();
+ verf[1] = (__be32)i++;
+ memcpy(clp->cl_confirm.data, verf, sizeof(clp->cl_confirm.data));
}
static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t)
@@ -1180,7 +1216,9 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
if (princ) {
clp->cl_principal = kstrdup(princ, GFP_KERNEL);
if (clp->cl_principal == NULL) {
+ spin_lock(&client_lock);
free_client(clp);
+ spin_unlock(&client_lock);
return NULL;
}
}
@@ -1347,6 +1385,7 @@ nfsd4_store_cache_entry(struct nfsd4_compoundres *resp)
slot->sl_opcnt = resp->opcnt;
slot->sl_status = resp->cstate.status;
+ slot->sl_flags |= NFSD4_SLOT_INITIALIZED;
if (nfsd4_not_cached(resp)) {
slot->sl_datalen = 0;
return;
@@ -1374,15 +1413,12 @@ nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args,
struct nfsd4_op *op;
struct nfsd4_slot *slot = resp->cstate.slot;
- dprintk("--> %s resp->opcnt %d cachethis %u \n", __func__,
- resp->opcnt, resp->cstate.slot->sl_cachethis);
-
/* Encode the replayed sequence operation */
op = &args->ops[resp->opcnt - 1];
nfsd4_encode_operation(resp, op);
/* Return nfserr_retry_uncached_rep in next operation. */
- if (args->opcnt > 1 && slot->sl_cachethis == 0) {
+ if (args->opcnt > 1 && !(slot->sl_flags & NFSD4_SLOT_CACHETHIS)) {
op = &args->ops[resp->opcnt++];
op->status = nfserr_retry_uncached_rep;
nfsd4_encode_operation(resp, op);
@@ -1575,16 +1611,11 @@ check_slot_seqid(u32 seqid, u32 slot_seqid, int slot_inuse)
else
return nfserr_seq_misordered;
}
- /* Normal */
+ /* Note unsigned 32-bit arithmetic handles wraparound: */
if (likely(seqid == slot_seqid + 1))
return nfs_ok;
- /* Replay */
if (seqid == slot_seqid)
return nfserr_replay_cache;
- /* Wraparound */
- if (seqid == 1 && (slot_seqid + 1) == 0)
- return nfs_ok;
- /* Misordered replay or misordered new request */
return nfserr_seq_misordered;
}
@@ -1815,9 +1846,10 @@ nfsd4_destroy_session(struct svc_rqst *r,
nfsd4_probe_callback_sync(ses->se_client);
nfs4_unlock_state();
+ spin_lock(&client_lock);
nfsd4_del_conns(ses);
-
- nfsd4_put_session(ses);
+ nfsd4_put_session_locked(ses);
+ spin_unlock(&client_lock);
status = nfs_ok;
out:
dprintk("%s returns %d\n", __func__, ntohl(status));
@@ -1921,8 +1953,12 @@ nfsd4_sequence(struct svc_rqst *rqstp,
* sr_highest_slotid and the sr_target_slot id to maxslots */
seq->maxslots = session->se_fchannel.maxreqs;
- status = check_slot_seqid(seq->seqid, slot->sl_seqid, slot->sl_inuse);
+ status = check_slot_seqid(seq->seqid, slot->sl_seqid,
+ slot->sl_flags & NFSD4_SLOT_INUSE);
if (status == nfserr_replay_cache) {
+ status = nfserr_seq_misordered;
+ if (!(slot->sl_flags & NFSD4_SLOT_INITIALIZED))
+ goto out;
cstate->slot = slot;
cstate->session = session;
/* Return the cached reply status and set cstate->status
@@ -1938,9 +1974,12 @@ nfsd4_sequence(struct svc_rqst *rqstp,
conn = NULL;
/* Success! bump slot seqid */
- slot->sl_inuse = true;
slot->sl_seqid = seq->seqid;
- slot->sl_cachethis = seq->cachethis;
+ slot->sl_flags |= NFSD4_SLOT_INUSE;
+ if (seq->cachethis)
+ slot->sl_flags |= NFSD4_SLOT_CACHETHIS;
+ else
+ slot->sl_flags &= ~NFSD4_SLOT_CACHETHIS;
cstate->slot = slot;
cstate->session = session;
@@ -2030,7 +2069,8 @@ nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *csta
nfs4_lock_state();
status = nfserr_complete_already;
- if (cstate->session->se_client->cl_firststate)
+ if (test_and_set_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
+ &cstate->session->se_client->cl_flags))
goto out;
status = nfserr_stale_clientid;
@@ -2045,7 +2085,7 @@ nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *csta
goto out;
status = nfs_ok;
- nfsd4_create_clid_dir(cstate->session->se_client);
+ nfsd4_client_record_create(cstate->session->se_client);
out:
nfs4_unlock_state();
return status;
@@ -2240,7 +2280,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
conf = find_confirmed_client_by_str(unconf->cl_recdir,
hash);
if (conf) {
- nfsd4_remove_clid_dir(conf);
+ nfsd4_client_record_remove(conf);
expire_client(conf);
}
move_to_confirmed(unconf);
@@ -2633,8 +2673,6 @@ nfs4_check_delegmode(struct nfs4_delegation *dp, int flags)
static int share_access_to_flags(u32 share_access)
{
- share_access &= ~NFS4_SHARE_WANT_MASK;
-
return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
}
@@ -2776,10 +2814,9 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *c
static void
-nfs4_set_claim_prev(struct nfsd4_open *open)
+nfs4_set_claim_prev(struct nfsd4_open *open, bool has_session)
{
open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
- open->op_openowner->oo_owner.so_client->cl_firststate = 1;
}
/* Should we give out recallable state?: */
@@ -2855,6 +2892,27 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
return 0;
}
+static void nfsd4_open_deleg_none_ext(struct nfsd4_open *open, int status)
+{
+ open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT;
+ if (status == -EAGAIN)
+ open->op_why_no_deleg = WND4_CONTENTION;
+ else {
+ open->op_why_no_deleg = WND4_RESOURCE;
+ switch (open->op_deleg_want) {
+ case NFS4_SHARE_WANT_READ_DELEG:
+ case NFS4_SHARE_WANT_WRITE_DELEG:
+ case NFS4_SHARE_WANT_ANY_DELEG:
+ break;
+ case NFS4_SHARE_WANT_CANCEL:
+ open->op_why_no_deleg = WND4_CANCELLED;
+ break;
+ case NFS4_SHARE_WANT_NO_DELEG:
+ BUG(); /* not supposed to get here */
+ }
+ }
+}
+
/*
* Attempt to hand out a delegation.
*/
@@ -2864,7 +2922,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_ol_
struct nfs4_delegation *dp;
struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner);
int cb_up;
- int status, flag = 0;
+ int status = 0, flag = 0;
cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client);
flag = NFS4_OPEN_DELEGATE_NONE;
@@ -2905,11 +2963,16 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_ol_
dprintk("NFSD: delegation stateid=" STATEID_FMT "\n",
STATEID_VAL(&dp->dl_stid.sc_stateid));
out:
- if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS
- && flag == NFS4_OPEN_DELEGATE_NONE
- && open->op_delegate_type != NFS4_OPEN_DELEGATE_NONE)
- dprintk("NFSD: WARNING: refusing delegation reclaim\n");
open->op_delegate_type = flag;
+ if (flag == NFS4_OPEN_DELEGATE_NONE) {
+ if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS &&
+ open->op_delegate_type != NFS4_OPEN_DELEGATE_NONE)
+ dprintk("NFSD: WARNING: refusing delegation reclaim\n");
+
+ /* 4.1 client asking for a delegation? */
+ if (open->op_deleg_want)
+ nfsd4_open_deleg_none_ext(open, status);
+ }
return;
out_free:
nfs4_put_delegation(dp);
@@ -2918,6 +2981,24 @@ out_no_deleg:
goto out;
}
+static void nfsd4_deleg_xgrade_none_ext(struct nfsd4_open *open,
+ struct nfs4_delegation *dp)
+{
+ if (open->op_deleg_want == NFS4_SHARE_WANT_READ_DELEG &&
+ dp->dl_type == NFS4_OPEN_DELEGATE_WRITE) {
+ open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT;
+ open->op_why_no_deleg = WND4_NOT_SUPP_DOWNGRADE;
+ } else if (open->op_deleg_want == NFS4_SHARE_WANT_WRITE_DELEG &&
+ dp->dl_type == NFS4_OPEN_DELEGATE_WRITE) {
+ open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT;
+ open->op_why_no_deleg = WND4_NOT_SUPP_UPGRADE;
+ }
+ /* Otherwise the client must be confused wanting a delegation
+ * it already has, therefore we don't return
+ * NFS4_OPEN_DELEGATE_NONE_EXT and reason.
+ */
+}
+
/*
* called with nfs4_lock_state() held.
*/
@@ -2979,24 +3060,36 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
update_stateid(&stp->st_stid.sc_stateid);
memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
- if (nfsd4_has_session(&resp->cstate))
+ if (nfsd4_has_session(&resp->cstate)) {
open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
+ if (open->op_deleg_want & NFS4_SHARE_WANT_NO_DELEG) {
+ open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT;
+ open->op_why_no_deleg = WND4_NOT_WANTED;
+ goto nodeleg;
+ }
+ }
+
/*
* Attempt to hand out a delegation. No error return, because the
* OPEN succeeds even if we fail.
*/
nfs4_open_delegation(current_fh, open, stp);
-
+nodeleg:
status = nfs_ok;
dprintk("%s: stateid=" STATEID_FMT "\n", __func__,
STATEID_VAL(&stp->st_stid.sc_stateid));
out:
+ /* 4.1 client trying to upgrade/downgrade delegation? */
+ if (open->op_delegate_type == NFS4_OPEN_DELEGATE_NONE && dp &&
+ open->op_deleg_want)
+ nfsd4_deleg_xgrade_none_ext(open, dp);
+
if (fp)
put_nfs4_file(fp);
if (status == 0 && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
- nfs4_set_claim_prev(open);
+ nfs4_set_claim_prev(open, nfsd4_has_session(&resp->cstate));
/*
* To finish the open response, we just need to set the rflags.
*/
@@ -3066,7 +3159,7 @@ static void
nfsd4_end_grace(void)
{
dprintk("NFSD: end of grace period\n");
- nfsd4_recdir_purge_old();
+ nfsd4_record_grace_done(&init_net, boot_time);
locks_end_grace(&nfsd4_manager);
/*
* Now that every NFSv4 client has had the chance to recover and
@@ -3115,7 +3208,7 @@ nfs4_laundromat(void)
clp = list_entry(pos, struct nfs4_client, cl_lru);
dprintk("NFSD: purging unused client (clientid %08x)\n",
clp->cl_clientid.cl_id);
- nfsd4_remove_clid_dir(clp);
+ nfsd4_client_record_remove(clp);
expire_client(clp);
}
spin_lock(&recall_lock);
@@ -3400,7 +3493,14 @@ __be32
nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_test_stateid *test_stateid)
{
- /* real work is done during encoding */
+ struct nfsd4_test_stateid_id *stateid;
+ struct nfs4_client *cl = cstate->session->se_client;
+
+ nfs4_lock_state();
+ list_for_each_entry(stateid, &test_stateid->ts_stateid_list, ts_id_list)
+ stateid->ts_id_status = nfs4_validate_stateid(cl, &stateid->ts_id_stateid);
+ nfs4_unlock_state();
+
return nfs_ok;
}
@@ -3539,7 +3639,7 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
__func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid));
- nfsd4_create_clid_dir(oo->oo_owner.so_client);
+ nfsd4_client_record_create(oo->oo_owner.so_client);
status = nfs_ok;
out:
if (!cstate->replay_owner)
@@ -3596,7 +3696,9 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
cstate->current_fh.fh_dentry->d_name.name);
/* We don't yet support WANT bits: */
- od->od_share_access &= NFS4_SHARE_ACCESS_MASK;
+ if (od->od_deleg_want)
+ dprintk("NFSD: %s: od_deleg_want=0x%x ignored\n", __func__,
+ od->od_deleg_want);
nfs4_lock_state();
status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,
@@ -4353,7 +4455,9 @@ nfs4_has_reclaimed_state(const char *name, bool use_exchange_id)
struct nfs4_client *clp;
clp = find_confirmed_client_by_str(name, strhashval);
- return clp ? 1 : 0;
+ if (!clp)
+ return 0;
+ return test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
}
/*
@@ -4377,7 +4481,7 @@ nfs4_client_to_reclaim(const char *name)
return 1;
}
-static void
+void
nfs4_release_reclaim(void)
{
struct nfs4_client_reclaim *crp = NULL;
@@ -4397,19 +4501,12 @@ nfs4_release_reclaim(void)
/*
* called from OPEN, CLAIM_PREVIOUS with a new clientid. */
-static struct nfs4_client_reclaim *
-nfs4_find_reclaim_client(clientid_t *clid)
+struct nfs4_client_reclaim *
+nfsd4_find_reclaim_client(struct nfs4_client *clp)
{
unsigned int strhashval;
- struct nfs4_client *clp;
struct nfs4_client_reclaim *crp = NULL;
-
- /* find clientid in conf_id_hashtbl */
- clp = find_confirmed_client(clid);
- if (clp == NULL)
- return NULL;
-
dprintk("NFSD: nfs4_find_reclaim_client for %.*s with recdir %s\n",
clp->cl_name.len, clp->cl_name.data,
clp->cl_recdir);
@@ -4430,7 +4527,14 @@ nfs4_find_reclaim_client(clientid_t *clid)
__be32
nfs4_check_open_reclaim(clientid_t *clid)
{
- return nfs4_find_reclaim_client(clid) ? nfs_ok : nfserr_reclaim_bad;
+ struct nfs4_client *clp;
+
+ /* find clientid in conf_id_hashtbl */
+ clp = find_confirmed_client(clid);
+ if (clp == NULL)
+ return nfserr_reclaim_bad;
+
+ return nfsd4_client_record_check(clp) ? nfserr_reclaim_bad : nfs_ok;
}
#ifdef CONFIG_NFSD_FAULT_INJECTION
@@ -4442,7 +4546,7 @@ void nfsd_forget_clients(u64 num)
nfs4_lock_state();
list_for_each_entry_safe(clp, next, &client_lru, cl_lru) {
- nfsd4_remove_clid_dir(clp);
+ nfsd4_client_record_remove(clp);
expire_client(clp);
if (++count == num)
break;
@@ -4577,19 +4681,6 @@ nfs4_state_init(void)
reclaim_str_hashtbl_size = 0;
}
-static void
-nfsd4_load_reboot_recovery_data(void)
-{
- int status;
-
- nfs4_lock_state();
- nfsd4_init_recdir();
- status = nfsd4_recdir_load();
- nfs4_unlock_state();
- if (status)
- printk("NFSD: Failure reading reboot recovery data\n");
-}
-
/*
* Since the lifetime of a delegation isn't limited to that of an open, a
* client may quite reasonably hang on to a delegation as long as it has
@@ -4613,21 +4704,34 @@ set_max_delegations(void)
/* initialization to perform when the nfsd service is started: */
-static int
-__nfs4_state_start(void)
+int
+nfs4_state_start(void)
{
int ret;
+ /*
+ * FIXME: For now, we hang most of the pernet global stuff off of
+ * init_net until nfsd is fully containerized. Eventually, we'll
+ * need to pass a net pointer into this function, take a reference
+ * to that instead and then do most of the rest of this on a per-net
+ * basis.
+ */
+ get_net(&init_net);
+ nfsd4_client_tracking_init(&init_net);
boot_time = get_seconds();
locks_start_grace(&nfsd4_manager);
printk(KERN_INFO "NFSD: starting %ld-second grace period\n",
nfsd4_grace);
ret = set_callback_cred();
- if (ret)
- return -ENOMEM;
+ if (ret) {
+ ret = -ENOMEM;
+ goto out_recovery;
+ }
laundry_wq = create_singlethread_workqueue("nfsd4");
- if (laundry_wq == NULL)
- return -ENOMEM;
+ if (laundry_wq == NULL) {
+ ret = -ENOMEM;
+ goto out_recovery;
+ }
ret = nfsd4_create_callback_queue();
if (ret)
goto out_free_laundry;
@@ -4636,16 +4740,12 @@ __nfs4_state_start(void)
return 0;
out_free_laundry:
destroy_workqueue(laundry_wq);
+out_recovery:
+ nfsd4_client_tracking_exit(&init_net);
+ put_net(&init_net);
return ret;
}
-int
-nfs4_state_start(void)
-{
- nfsd4_load_reboot_recovery_data();
- return __nfs4_state_start();
-}
-
static void
__nfs4_state_shutdown(void)
{
@@ -4676,7 +4776,8 @@ __nfs4_state_shutdown(void)
unhash_delegation(dp);
}
- nfsd4_shutdown_recdir();
+ nfsd4_client_tracking_exit(&init_net);
+ put_net(&init_net);
}
void
@@ -4686,8 +4787,108 @@ nfs4_state_shutdown(void)
destroy_workqueue(laundry_wq);
locks_end_grace(&nfsd4_manager);
nfs4_lock_state();
- nfs4_release_reclaim();
__nfs4_state_shutdown();
nfs4_unlock_state();
nfsd4_destroy_callback_queue();
}
+
+static void
+get_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid)
+{
+ if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG) && CURRENT_STATEID(stateid))
+ memcpy(stateid, &cstate->current_stateid, sizeof(stateid_t));
+}
+
+static void
+put_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid)
+{
+ if (cstate->minorversion) {
+ memcpy(&cstate->current_stateid, stateid, sizeof(stateid_t));
+ SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
+ }
+}
+
+void
+clear_current_stateid(struct nfsd4_compound_state *cstate)
+{
+ CLEAR_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
+}
+
+/*
+ * functions to set current state id
+ */
+void
+nfsd4_set_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *odp)
+{
+ put_stateid(cstate, &odp->od_stateid);
+}
+
+void
+nfsd4_set_openstateid(struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
+{
+ put_stateid(cstate, &open->op_stateid);
+}
+
+void
+nfsd4_set_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close)
+{
+ put_stateid(cstate, &close->cl_stateid);
+}
+
+void
+nfsd4_set_lockstateid(struct nfsd4_compound_state *cstate, struct nfsd4_lock *lock)
+{
+ put_stateid(cstate, &lock->lk_resp_stateid);
+}
+
+/*
+ * functions to consume current state id
+ */
+
+void
+nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *odp)
+{
+ get_stateid(cstate, &odp->od_stateid);
+}
+
+void
+nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *cstate, struct nfsd4_delegreturn *drp)
+{
+ get_stateid(cstate, &drp->dr_stateid);
+}
+
+void
+nfsd4_get_freestateid(struct nfsd4_compound_state *cstate, struct nfsd4_free_stateid *fsp)
+{
+ get_stateid(cstate, &fsp->fr_stateid);
+}
+
+void
+nfsd4_get_setattrstateid(struct nfsd4_compound_state *cstate, struct nfsd4_setattr *setattr)
+{
+ get_stateid(cstate, &setattr->sa_stateid);
+}
+
+void
+nfsd4_get_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close)
+{
+ get_stateid(cstate, &close->cl_stateid);
+}
+
+void
+nfsd4_get_lockustateid(struct nfsd4_compound_state *cstate, struct nfsd4_locku *locku)
+{
+ get_stateid(cstate, &locku->lu_stateid);
+}
+
+void
+nfsd4_get_readstateid(struct nfsd4_compound_state *cstate, struct nfsd4_read *read)
+{
+ get_stateid(cstate, &read->rd_stateid);
+}
+
+void
+nfsd4_get_writestateid(struct nfsd4_compound_state *cstate, struct nfsd4_write *write)
+{
+ get_stateid(cstate, &write->wr_stateid);
+}
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 0ec5a1b9700e..bcd8904ab1e3 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -133,22 +133,6 @@ xdr_error: \
} \
} while (0)
-static void save_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
-{
- savep->p = argp->p;
- savep->end = argp->end;
- savep->pagelen = argp->pagelen;
- savep->pagelist = argp->pagelist;
-}
-
-static void restore_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
-{
- argp->p = savep->p;
- argp->end = savep->end;
- argp->pagelen = savep->pagelen;
- argp->pagelist = savep->pagelist;
-}
-
static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
{
/* We want more bytes than seem to be available.
@@ -638,14 +622,18 @@ nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup
DECODE_TAIL;
}
-static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x)
+static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when)
{
__be32 *p;
u32 w;
READ_BUF(4);
READ32(w);
- *x = w;
+ *share_access = w & NFS4_SHARE_ACCESS_MASK;
+ *deleg_want = w & NFS4_SHARE_WANT_MASK;
+ if (deleg_when)
+ *deleg_when = w & NFS4_SHARE_WHEN_MASK;
+
switch (w & NFS4_SHARE_ACCESS_MASK) {
case NFS4_SHARE_ACCESS_READ:
case NFS4_SHARE_ACCESS_WRITE:
@@ -673,6 +661,9 @@ static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x)
w &= ~NFS4_SHARE_WANT_MASK;
if (!w)
return nfs_ok;
+
+ if (!deleg_when) /* open_downgrade */
+ return nfserr_inval;
switch (w) {
case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL:
case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED:
@@ -719,6 +710,7 @@ static __be32
nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
{
DECODE_HEAD;
+ u32 dummy;
memset(open->op_bmval, 0, sizeof(open->op_bmval));
open->op_iattr.ia_valid = 0;
@@ -727,7 +719,9 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
/* seqid, share_access, share_deny, clientid, ownerlen */
READ_BUF(4);
READ32(open->op_seqid);
- status = nfsd4_decode_share_access(argp, &open->op_share_access);
+ /* decode, yet ignore deleg_when until supported */
+ status = nfsd4_decode_share_access(argp, &open->op_share_access,
+ &open->op_deleg_want, &dummy);
if (status)
goto xdr_error;
status = nfsd4_decode_share_deny(argp, &open->op_share_deny);
@@ -755,14 +749,14 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
goto out;
break;
case NFS4_CREATE_EXCLUSIVE:
- READ_BUF(8);
- COPYMEM(open->op_verf.data, 8);
+ READ_BUF(NFS4_VERIFIER_SIZE);
+ COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE);
break;
case NFS4_CREATE_EXCLUSIVE4_1:
if (argp->minorversion < 1)
goto xdr_error;
- READ_BUF(8);
- COPYMEM(open->op_verf.data, 8);
+ READ_BUF(NFS4_VERIFIER_SIZE);
+ COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE);
status = nfsd4_decode_fattr(argp, open->op_bmval,
&open->op_iattr, &open->op_acl);
if (status)
@@ -848,7 +842,8 @@ nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_d
return status;
READ_BUF(4);
READ32(open_down->od_seqid);
- status = nfsd4_decode_share_access(argp, &open_down->od_share_access);
+ status = nfsd4_decode_share_access(argp, &open_down->od_share_access,
+ &open_down->od_deleg_want, NULL);
if (status)
return status;
status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny);
@@ -994,8 +989,8 @@ nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclient
{
DECODE_HEAD;
- READ_BUF(8);
- COPYMEM(setclientid->se_verf.data, 8);
+ READ_BUF(NFS4_VERIFIER_SIZE);
+ COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE);
status = nfsd4_decode_opaque(argp, &setclientid->se_name);
if (status)
@@ -1020,9 +1015,9 @@ nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_s
{
DECODE_HEAD;
- READ_BUF(8 + sizeof(nfs4_verifier));
+ READ_BUF(8 + NFS4_VERIFIER_SIZE);
COPYMEM(&scd_c->sc_clientid, 8);
- COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier));
+ COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE);
DECODE_TAIL;
}
@@ -1385,26 +1380,29 @@ nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
static __be32
nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid)
{
- unsigned int nbytes;
- stateid_t si;
int i;
- __be32 *p;
- __be32 status;
+ __be32 *p, status;
+ struct nfsd4_test_stateid_id *stateid;
READ_BUF(4);
test_stateid->ts_num_ids = ntohl(*p++);
- nbytes = test_stateid->ts_num_ids * sizeof(stateid_t);
- if (nbytes > (u32)((char *)argp->end - (char *)argp->p))
- goto xdr_error;
-
- test_stateid->ts_saved_args = argp;
- save_buf(argp, &test_stateid->ts_savedp);
+ INIT_LIST_HEAD(&test_stateid->ts_stateid_list);
for (i = 0; i < test_stateid->ts_num_ids; i++) {
- status = nfsd4_decode_stateid(argp, &si);
+ stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL);
+ if (!stateid) {
+ status = PTR_ERR(stateid);
+ goto out;
+ }
+
+ defer_free(argp, kfree, stateid);
+ INIT_LIST_HEAD(&stateid->ts_id_list);
+ list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list);
+
+ status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid);
if (status)
- return status;
+ goto out;
}
status = 0;
@@ -2661,8 +2659,8 @@ nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(8);
- WRITEMEM(commit->co_verf.data, 8);
+ RESERVE_SPACE(NFS4_VERIFIER_SIZE);
+ WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE);
ADJUST_ARGS();
}
return nfserr;
@@ -2851,6 +2849,20 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
WRITE32(0); /* XXX: is NULL principal ok? */
ADJUST_ARGS();
break;
+ case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */
+ switch (open->op_why_no_deleg) {
+ case WND4_CONTENTION:
+ case WND4_RESOURCE:
+ RESERVE_SPACE(8);
+ WRITE32(open->op_why_no_deleg);
+ WRITE32(0); /* deleg signaling not supported yet */
+ break;
+ default:
+ RESERVE_SPACE(4);
+ WRITE32(open->op_why_no_deleg);
+ }
+ ADJUST_ARGS();
+ break;
default:
BUG();
}
@@ -3008,7 +3020,7 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
if (resp->xbuf->page_len)
return nfserr_resource;
- RESERVE_SPACE(8); /* verifier */
+ RESERVE_SPACE(NFS4_VERIFIER_SIZE);
savep = p;
/* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
@@ -3209,9 +3221,9 @@ nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct n
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(8 + sizeof(nfs4_verifier));
+ RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE);
WRITEMEM(&scd->se_clientid, 8);
- WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier));
+ WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE);
ADJUST_ARGS();
}
else if (nfserr == nfserr_clid_inuse) {
@@ -3232,7 +3244,7 @@ nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_w
RESERVE_SPACE(16);
WRITE32(write->wr_bytes_written);
WRITE32(write->wr_how_written);
- WRITEMEM(write->wr_verifier.data, 8);
+ WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE);
ADJUST_ARGS();
}
return nfserr;
@@ -3391,30 +3403,17 @@ __be32
nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_test_stateid *test_stateid)
{
- struct nfsd4_compoundargs *argp;
- struct nfs4_client *cl = resp->cstate.session->se_client;
- stateid_t si;
+ struct nfsd4_test_stateid_id *stateid, *next;
__be32 *p;
- int i;
- int valid;
-
- restore_buf(test_stateid->ts_saved_args, &test_stateid->ts_savedp);
- argp = test_stateid->ts_saved_args;
- RESERVE_SPACE(4);
+ RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids));
*p++ = htonl(test_stateid->ts_num_ids);
- resp->p = p;
- nfs4_lock_state();
- for (i = 0; i < test_stateid->ts_num_ids; i++) {
- nfsd4_decode_stateid(argp, &si);
- valid = nfs4_validate_stateid(cl, &si);
- RESERVE_SPACE(4);
- *p++ = htonl(valid);
- resp->p = p;
+ list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) {
+ *p++ = htonl(stateid->ts_id_status);
}
- nfs4_unlock_state();
+ ADJUST_ARGS();
return nfserr;
}
@@ -3532,7 +3531,7 @@ int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
if (length > session->se_fchannel.maxresp_sz)
return nfserr_rep_too_big;
- if (slot->sl_cachethis == 1 &&
+ if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) &&
length > session->se_fchannel.maxresp_cached)
return nfserr_rep_too_big_to_cache;
@@ -3656,8 +3655,7 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo
if (nfsd4_has_session(cs)) {
if (cs->status != nfserr_replay_cache) {
nfsd4_store_cache_entry(resp);
- dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
- cs->slot->sl_inuse = false;
+ cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE;
}
/* Renew the clientid on success and on replay */
release_session_client(cs->session);
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 64c24af8d7ea..2c53be6d3579 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -13,12 +13,14 @@
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/gss_api.h>
#include <linux/sunrpc/gss_krb5_enctypes.h>
+#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/module.h>
#include "idmap.h"
#include "nfsd.h"
#include "cache.h"
#include "fault_inject.h"
+#include "netns.h"
/*
* We have a single directory with several nodes in it.
@@ -1124,14 +1126,26 @@ static int create_proc_exports_entry(void)
}
#endif
+int nfsd_net_id;
+static struct pernet_operations nfsd_net_ops = {
+ .id = &nfsd_net_id,
+ .size = sizeof(struct nfsd_net),
+};
+
static int __init init_nfsd(void)
{
int retval;
printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
- retval = nfsd4_init_slabs();
+ retval = register_cld_notifier();
if (retval)
return retval;
+ retval = register_pernet_subsys(&nfsd_net_ops);
+ if (retval < 0)
+ goto out_unregister_notifier;
+ retval = nfsd4_init_slabs();
+ if (retval)
+ goto out_unregister_pernet;
nfs4_state_init();
retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */
if (retval)
@@ -1169,6 +1183,10 @@ out_free_stat:
nfsd_fault_inject_cleanup();
out_free_slabs:
nfsd4_free_slabs();
+out_unregister_pernet:
+ unregister_pernet_subsys(&nfsd_net_ops);
+out_unregister_notifier:
+ unregister_cld_notifier();
return retval;
}
@@ -1184,6 +1202,8 @@ static void __exit exit_nfsd(void)
nfsd4_free_slabs();
nfsd_fault_inject_cleanup();
unregister_filesystem(&nfsd_fs_type);
+ unregister_pernet_subsys(&nfsd_net_ops);
+ unregister_cld_notifier();
}
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 1d1e8589b4ce..1671429ffa66 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -364,12 +364,17 @@ static inline u32 nfsd_suppattrs2(u32 minorversion)
NFSD_WRITEABLE_ATTRS_WORD2
extern int nfsd4_is_junction(struct dentry *dentry);
-#else
+extern int register_cld_notifier(void);
+extern void unregister_cld_notifier(void);
+#else /* CONFIG_NFSD_V4 */
static inline int nfsd4_is_junction(struct dentry *dentry)
{
return 0;
}
+#define register_cld_notifier() 0
+#define unregister_cld_notifier() do { } while(0)
+
#endif /* CONFIG_NFSD_V4 */
#endif /* LINUX_NFSD_NFSD_H */
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index fce472f5f39e..28dfad39f0c5 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -307,33 +307,37 @@ static void set_max_drc(void)
dprintk("%s nfsd_drc_max_mem %u \n", __func__, nfsd_drc_max_mem);
}
-int nfsd_create_serv(void)
+static int nfsd_get_default_max_blksize(void)
{
- int err = 0;
+ struct sysinfo i;
+ unsigned long long target;
+ unsigned long ret;
+
+ si_meminfo(&i);
+ target = (i.totalram - i.totalhigh) << PAGE_SHIFT;
+ /*
+ * Aim for 1/4096 of memory per thread This gives 1MB on 4Gig
+ * machines, but only uses 32K on 128M machines. Bottom out at
+ * 8K on 32M and smaller. Of course, this is only a default.
+ */
+ target >>= 12;
+
+ ret = NFSSVC_MAXBLKSIZE;
+ while (ret > target && ret >= 8*1024*2)
+ ret /= 2;
+ return ret;
+}
+int nfsd_create_serv(void)
+{
WARN_ON(!mutex_is_locked(&nfsd_mutex));
if (nfsd_serv) {
svc_get(nfsd_serv);
return 0;
}
- if (nfsd_max_blksize == 0) {
- /* choose a suitable default */
- struct sysinfo i;
- si_meminfo(&i);
- /* Aim for 1/4096 of memory per thread
- * This gives 1MB on 4Gig machines
- * But only uses 32K on 128M machines.
- * Bottom out at 8K on 32M and smaller.
- * Of course, this is only a default.
- */
- nfsd_max_blksize = NFSSVC_MAXBLKSIZE;
- i.totalram <<= PAGE_SHIFT - 12;
- while (nfsd_max_blksize > i.totalram &&
- nfsd_max_blksize >= 8*1024*2)
- nfsd_max_blksize /= 2;
- }
+ if (nfsd_max_blksize == 0)
+ nfsd_max_blksize = nfsd_get_default_max_blksize();
nfsd_reset_versions();
-
nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
nfsd_last_thread, nfsd, THIS_MODULE);
if (nfsd_serv == NULL)
@@ -341,7 +345,7 @@ int nfsd_create_serv(void)
set_max_drc();
do_gettimeofday(&nfssvc_boot); /* record boot time */
- return err;
+ return 0;
}
int nfsd_nrpools(void)
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index ffb5df1db94f..89ab137d379a 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -128,12 +128,14 @@ static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s)
(NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE)
struct nfsd4_slot {
- bool sl_inuse;
- bool sl_cachethis;
- u16 sl_opcnt;
u32 sl_seqid;
__be32 sl_status;
u32 sl_datalen;
+ u16 sl_opcnt;
+#define NFSD4_SLOT_INUSE (1 << 0)
+#define NFSD4_SLOT_CACHETHIS (1 << 1)
+#define NFSD4_SLOT_INITIALIZED (1 << 2)
+ u8 sl_flags;
char sl_data[];
};
@@ -196,18 +198,7 @@ struct nfsd4_session {
struct nfsd4_slot *se_slots[]; /* forward channel slots */
};
-static inline void
-nfsd4_put_session(struct nfsd4_session *ses)
-{
- extern void free_session(struct kref *kref);
- kref_put(&ses->se_ref, free_session);
-}
-
-static inline void
-nfsd4_get_session(struct nfsd4_session *ses)
-{
- kref_get(&ses->se_ref);
-}
+extern void nfsd4_put_session(struct nfsd4_session *ses);
/* formatted contents of nfs4_sessionid */
struct nfsd4_sessionid {
@@ -245,14 +236,17 @@ struct nfs4_client {
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
- u32 cl_firststate; /* recovery dir creation */
u32 cl_minorversion;
/* for v4.0 and v4.1 callbacks: */
struct nfs4_cb_conn cl_cb_conn;
-#define NFSD4_CLIENT_CB_UPDATE 1
-#define NFSD4_CLIENT_KILL 2
- unsigned long cl_cb_flags;
+#define NFSD4_CLIENT_CB_UPDATE (0)
+#define NFSD4_CLIENT_CB_KILL (1)
+#define NFSD4_CLIENT_STABLE (2) /* client on stable storage */
+#define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */
+#define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \
+ 1 << NFSD4_CLIENT_CB_KILL)
+ unsigned long cl_flags;
struct rpc_clnt *cl_cb_client;
u32 cl_cb_ident;
#define NFSD4_CB_UP 0
@@ -463,6 +457,8 @@ extern __be32 nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfs4_in_grace(void);
+extern void nfs4_release_reclaim(void);
+extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(struct nfs4_client *crp);
extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
extern void nfs4_free_openowner(struct nfs4_openowner *);
extern void nfs4_free_lockowner(struct nfs4_lockowner *);
@@ -477,16 +473,17 @@ extern void nfsd4_destroy_callback_queue(void);
extern void nfsd4_shutdown_callback(struct nfs4_client *);
extern void nfs4_put_delegation(struct nfs4_delegation *dp);
extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname);
-extern void nfsd4_init_recdir(void);
-extern int nfsd4_recdir_load(void);
-extern void nfsd4_shutdown_recdir(void);
extern int nfs4_client_to_reclaim(const char *name);
extern int nfs4_has_reclaimed_state(const char *name, bool use_exchange_id);
-extern void nfsd4_recdir_purge_old(void);
-extern void nfsd4_create_clid_dir(struct nfs4_client *clp);
-extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
extern void release_session_client(struct nfsd4_session *);
extern __be32 nfs4_validate_stateid(struct nfs4_client *, stateid_t *);
extern void nfsd4_purge_closed_stateid(struct nfs4_stateowner *);
+/* nfs4recover operations */
+extern int nfsd4_client_tracking_init(struct net *net);
+extern void nfsd4_client_tracking_exit(struct net *net);
+extern void nfsd4_client_record_create(struct nfs4_client *clp);
+extern void nfsd4_client_record_remove(struct nfs4_client *clp);
+extern int nfsd4_client_record_check(struct nfs4_client *clp);
+extern void nfsd4_record_grace_done(struct net *net, time_t boot_time);
#endif /* NFSD4_STATE_H */
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index e59f71d0cf73..296d671654d6 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -737,12 +737,13 @@ static int nfsd_open_break_lease(struct inode *inode, int access)
/*
* Open an existing file or directory.
- * The access argument indicates the type of open (read/write/lock)
+ * The may_flags argument indicates the type of open (read/write/lock)
+ * and additional flags.
* N.B. After this call fhp needs an fh_put
*/
__be32
nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
- int access, struct file **filp)
+ int may_flags, struct file **filp)
{
struct dentry *dentry;
struct inode *inode;
@@ -757,7 +758,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
* and (hopefully) checked permission - so allow OWNER_OVERRIDE
* in case a chmod has now revoked permission.
*/
- err = fh_verify(rqstp, fhp, type, access | NFSD_MAY_OWNER_OVERRIDE);
+ err = fh_verify(rqstp, fhp, type, may_flags | NFSD_MAY_OWNER_OVERRIDE);
if (err)
goto out;
@@ -768,7 +769,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
* or any access when mandatory locking enabled
*/
err = nfserr_perm;
- if (IS_APPEND(inode) && (access & NFSD_MAY_WRITE))
+ if (IS_APPEND(inode) && (may_flags & NFSD_MAY_WRITE))
goto out;
/*
* We must ignore files (but only files) which might have mandatory
@@ -781,12 +782,12 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
if (!inode->i_fop)
goto out;
- host_err = nfsd_open_break_lease(inode, access);
+ host_err = nfsd_open_break_lease(inode, may_flags);
if (host_err) /* NOMEM or WOULDBLOCK */
goto out_nfserr;
- if (access & NFSD_MAY_WRITE) {
- if (access & NFSD_MAY_READ)
+ if (may_flags & NFSD_MAY_WRITE) {
+ if (may_flags & NFSD_MAY_READ)
flags = O_RDWR|O_LARGEFILE;
else
flags = O_WRONLY|O_LARGEFILE;
@@ -795,8 +796,15 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
flags, current_cred());
if (IS_ERR(*filp))
host_err = PTR_ERR(*filp);
- else
- host_err = ima_file_check(*filp, access);
+ else {
+ host_err = ima_file_check(*filp, may_flags);
+
+ if (may_flags & NFSD_MAY_64BIT_COOKIE)
+ (*filp)->f_mode |= FMODE_64BITHASH;
+ else
+ (*filp)->f_mode |= FMODE_32BITHASH;
+ }
+
out_nfserr:
err = nfserrno(host_err);
out:
@@ -2021,8 +2029,13 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
__be32 err;
struct file *file;
loff_t offset = *offsetp;
+ int may_flags = NFSD_MAY_READ;
+
+ /* NFSv2 only supports 32 bit cookies */
+ if (rqstp->rq_vers > 2)
+ may_flags |= NFSD_MAY_64BIT_COOKIE;
- err = nfsd_open(rqstp, fhp, S_IFDIR, NFSD_MAY_READ, &file);
+ err = nfsd_open(rqstp, fhp, S_IFDIR, may_flags, &file);
if (err)
goto out;
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index 1dcd238e11a0..ec0611b2b738 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -27,6 +27,8 @@
#define NFSD_MAY_BYPASS_GSS 0x400
#define NFSD_MAY_READ_IF_EXEC 0x800
+#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
+
#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 2364747ee97d..1b3501598ab5 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -43,6 +43,13 @@
#define NFSD4_MAX_TAGLEN 128
#define XDR_LEN(n) (((n) + 3) & ~3)
+#define CURRENT_STATE_ID_FLAG (1<<0)
+#define SAVED_STATE_ID_FLAG (1<<1)
+
+#define SET_STATE_ID(c, f) ((c)->sid_flags |= (f))
+#define HAS_STATE_ID(c, f) ((c)->sid_flags & (f))
+#define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f))
+
struct nfsd4_compound_state {
struct svc_fh current_fh;
struct svc_fh save_fh;
@@ -54,6 +61,10 @@ struct nfsd4_compound_state {
size_t iovlen;
u32 minorversion;
u32 status;
+ stateid_t current_stateid;
+ stateid_t save_stateid;
+ /* to indicate current and saved state id presents */
+ u32 sid_flags;
};
static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
@@ -212,16 +223,19 @@ struct nfsd4_open {
struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
u32 op_delegate_type; /* request - CLAIM_PREV only */
stateid_t op_delegate_stateid; /* request - response */
+ u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */
u32 op_create; /* request */
u32 op_createmode; /* request */
u32 op_bmval[3]; /* request */
struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
- nfs4_verifier verf; /* EXCLUSIVE4 */
+ nfs4_verifier op_verf __attribute__((aligned(32)));
+ /* EXCLUSIVE4 */
clientid_t op_clientid; /* request */
struct xdr_netobj op_owner; /* request */
u32 op_seqid; /* request */
u32 op_share_access; /* request */
u32 op_share_deny; /* request */
+ u32 op_deleg_want; /* request */
stateid_t op_stateid; /* response */
u32 op_recall; /* recall */
struct nfsd4_change_info op_cinfo; /* response */
@@ -234,7 +248,6 @@ struct nfsd4_open {
struct nfs4_acl *op_acl;
};
#define op_iattr iattr
-#define op_verf verf
struct nfsd4_open_confirm {
stateid_t oc_req_stateid /* request */;
@@ -245,8 +258,9 @@ struct nfsd4_open_confirm {
struct nfsd4_open_downgrade {
stateid_t od_stateid;
u32 od_seqid;
- u32 od_share_access;
- u32 od_share_deny;
+ u32 od_share_access; /* request */
+ u32 od_deleg_want; /* request */
+ u32 od_share_deny; /* request */
};
@@ -343,10 +357,15 @@ struct nfsd4_saved_compoundargs {
struct page **pagelist;
};
+struct nfsd4_test_stateid_id {
+ __be32 ts_id_status;
+ stateid_t ts_id_stateid;
+ struct list_head ts_id_list;
+};
+
struct nfsd4_test_stateid {
__be32 ts_num_ids;
- struct nfsd4_compoundargs *ts_saved_args;
- struct nfsd4_saved_compoundargs ts_savedp;
+ struct list_head ts_stateid_list;
};
struct nfsd4_free_stateid {
@@ -503,7 +522,8 @@ static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
{
- return !resp->cstate.slot->sl_cachethis || nfsd4_is_solo_sequence(resp);
+ return !(resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
+ || nfsd4_is_solo_sequence(resp);
}
#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 18:47:27 +0100