/*
-* linux/fs/nfsd/nfs4state.c
-*
* Copyright (c) 2001 The Regents of the University of Michigan.
* All rights reserved.
*
*
*/
-#include <linux/param.h>
-#include <linux/major.h>
-#include <linux/slab.h>
-
-#include <linux/sunrpc/svc.h>
-#include <linux/nfsd/nfsd.h>
-#include <linux/nfsd/cache.h>
#include <linux/file.h>
-#include <linux/mount.h>
-#include <linux/workqueue.h>
#include <linux/smp_lock.h>
-#include <linux/kthread.h>
-#include <linux/nfs4.h>
-#include <linux/nfsd/state.h>
-#include <linux/nfsd/xdr4.h>
#include <linux/namei.h>
#include <linux/swap.h>
-#include <linux/mutex.h>
-#include <linux/lockd/bind.h>
-#include <linux/module.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/clnt.h>
+#include "xdr4.h"
+#include "vfs.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
/*
* fchan holds the client values on input, and the server values on output
+ * sv_max_mesg is the maximum payload plus one page for overhead.
*/
static int init_forechannel_attrs(struct svc_rqst *rqstp,
struct nfsd4_channel_attrs *session_fchan,
struct nfsd4_channel_attrs *fchan)
{
int status = 0;
- __u32 maxcount = svc_max_payload(rqstp);
+ __u32 maxcount = nfsd_serv->sv_max_mesg;
/* headerpadsz set to zero in encode routine */
kfree(ses->se_slots[i]);
}
+/*
+ * We don't actually need to cache the rpc and session headers, so we
+ * can allocate a little less for each slot:
+ */
+static inline int slot_bytes(struct nfsd4_channel_attrs *ca)
+{
+ return ca->maxresp_cached - NFSD_MIN_HDR_SEQ_SZ;
+}
+
static int
alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
struct nfsd4_create_session *cses)
memcpy(new, &tmp, sizeof(*new));
/* allocate each struct nfsd4_slot and data cache in one piece */
- cachesize = new->se_fchannel.maxresp_cached - NFSD_MIN_HDR_SEQ_SZ;
+ cachesize = slot_bytes(&new->se_fchannel);
for (i = 0; i < new->se_fchannel.maxreqs; i++) {
sp = kzalloc(sizeof(*sp) + cachesize, GFP_KERNEL);
if (!sp)
free_session(struct kref *kref)
{
struct nfsd4_session *ses;
+ int mem;
ses = container_of(kref, struct nfsd4_session, se_ref);
spin_lock(&nfsd_drc_lock);
- nfsd_drc_mem_used -= ses->se_fchannel.maxreqs * NFSD_SLOT_CACHE_SIZE;
+ mem = ses->se_fchannel.maxreqs * slot_bytes(&ses->se_fchannel);
+ nfsd_drc_mem_used -= mem;
spin_unlock(&nfsd_drc_lock);
free_session_slots(ses);
kfree(ses);
clp->cl_cb_conn.cb_client = NULL;
rpc_shutdown_client(clnt);
}
- if (clp->cl_cb_conn.cb_cred) {
- put_rpccred(clp->cl_cb_conn.cb_cred);
- clp->cl_cb_conn.cb_cred = NULL;
- }
}
static inline void
free_client(struct nfs4_client *clp)
{
shutdown_callback_client(clp);
+ if (clp->cl_cb_xprt)
+ svc_xprt_put(clp->cl_cb_xprt);
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
kfree(clp->cl_principal);
put_nfs4_client(clp);
}
-static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir)
-{
- struct nfs4_client *clp;
-
- clp = alloc_client(name);
- if (clp == NULL)
- return NULL;
- memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
- atomic_set(&clp->cl_count, 1);
- atomic_set(&clp->cl_cb_conn.cb_set, 0);
- INIT_LIST_HEAD(&clp->cl_idhash);
- INIT_LIST_HEAD(&clp->cl_strhash);
- INIT_LIST_HEAD(&clp->cl_openowners);
- INIT_LIST_HEAD(&clp->cl_delegations);
- INIT_LIST_HEAD(&clp->cl_sessions);
- INIT_LIST_HEAD(&clp->cl_lru);
- return clp;
-}
-
static void copy_verf(struct nfs4_client *target, nfs4_verifier *source)
{
memcpy(target->cl_verifier.data, source->data,
*p++ = i++;
}
+static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
+ struct svc_rqst *rqstp, nfs4_verifier *verf)
+{
+ struct nfs4_client *clp;
+ struct sockaddr *sa = svc_addr(rqstp);
+ char *princ;
+
+ clp = alloc_client(name);
+ if (clp == NULL)
+ return NULL;
+
+ princ = svc_gss_principal(rqstp);
+ if (princ) {
+ clp->cl_principal = kstrdup(princ, GFP_KERNEL);
+ if (clp->cl_principal == NULL) {
+ free_client(clp);
+ return NULL;
+ }
+ }
+
+ memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
+ atomic_set(&clp->cl_count, 1);
+ atomic_set(&clp->cl_cb_conn.cb_set, 0);
+ INIT_LIST_HEAD(&clp->cl_idhash);
+ INIT_LIST_HEAD(&clp->cl_strhash);
+ INIT_LIST_HEAD(&clp->cl_openowners);
+ INIT_LIST_HEAD(&clp->cl_delegations);
+ INIT_LIST_HEAD(&clp->cl_sessions);
+ INIT_LIST_HEAD(&clp->cl_lru);
+ clear_bit(0, &clp->cl_cb_slot_busy);
+ rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table");
+ copy_verf(clp, verf);
+ rpc_copy_addr((struct sockaddr *) &clp->cl_addr, sa);
+ clp->cl_flavor = rqstp->rq_flavor;
+ copy_cred(&clp->cl_cred, &rqstp->rq_cred);
+ gen_confirm(clp);
+
+ return clp;
+}
+
static int check_name(struct xdr_netobj name)
{
if (name.len == 0)
out_new:
/* Normal case */
- new = create_client(exid->clname, dname);
+ new = create_client(exid->clname, dname, rqstp, &verf);
if (new == NULL) {
status = nfserr_serverfault;
goto out;
}
- copy_verf(new, &verf);
- copy_cred(&new->cl_cred, &rqstp->rq_cred);
- rpc_copy_addr((struct sockaddr *) &new->cl_addr, sa);
gen_clid(new);
- gen_confirm(new);
add_to_unconfirmed(new, strhashval);
out_copy:
exid->clientid.cl_boot = new->cl_clientid.cl_boot;
cr_ses->flags &= ~SESSION4_PERSIST;
cr_ses->flags &= ~SESSION4_RDMA;
+ if (cr_ses->flags & SESSION4_BACK_CHAN) {
+ unconf->cl_cb_xprt = rqstp->rq_xprt;
+ svc_xprt_get(unconf->cl_cb_xprt);
+ rpc_copy_addr(
+ (struct sockaddr *)&unconf->cl_cb_conn.cb_addr,
+ sa);
+ unconf->cl_cb_conn.cb_addrlen = svc_addr_len(sa);
+ unconf->cl_cb_conn.cb_minorversion =
+ cstate->minorversion;
+ unconf->cl_cb_conn.cb_prog = cr_ses->callback_prog;
+ unconf->cl_cb_seq_nr = 1;
+ nfsd4_probe_callback(unconf);
+ }
conf = unconf;
} else {
status = nfserr_stale_clientid;
unsigned int strhashval;
struct nfs4_client *conf, *unconf, *new;
__be32 status;
- char *princ;
char dname[HEXDIR_LEN];
if (!check_name(clname))
*/
if (unconf)
expire_client(unconf);
- new = create_client(clname, dname);
+ new = create_client(clname, dname, rqstp, &clverifier);
if (new == NULL)
goto out;
gen_clid(new);
*/
expire_client(unconf);
}
- new = create_client(clname, dname);
+ new = create_client(clname, dname, rqstp, &clverifier);
if (new == NULL)
goto out;
copy_clid(new, conf);
* probable client reboot; state will be removed if
* confirmed.
*/
- new = create_client(clname, dname);
+ new = create_client(clname, dname, rqstp, &clverifier);
if (new == NULL)
goto out;
gen_clid(new);
* confirmed.
*/
expire_client(unconf);
- new = create_client(clname, dname);
+ new = create_client(clname, dname, rqstp, &clverifier);
if (new == NULL)
goto out;
gen_clid(new);
}
- copy_verf(new, &clverifier);
- rpc_copy_addr((struct sockaddr *) &new->cl_addr, sa);
- new->cl_flavor = rqstp->rq_flavor;
- princ = svc_gss_principal(rqstp);
- if (princ) {
- new->cl_principal = kstrdup(princ, GFP_KERNEL);
- if (new->cl_principal == NULL) {
- free_client(new);
- goto out;
- }
- }
- copy_cred(&new->cl_cred, &rqstp->rq_cred);
- gen_confirm(new);
gen_callback(new, setclid, rpc_get_scope_id(sa));
add_to_unconfirmed(new, strhashval);
setclid->se_clientid.cl_boot = new->cl_clientid.cl_boot;
{
if (share_access & NFS4_SHARE_ACCESS_WRITE) {
drop_file_write_access(filp);
+ spin_lock(&filp->f_lock);
filp->f_mode = (filp->f_mode | FMODE_READ) & ~FMODE_WRITE;
+ spin_unlock(&filp->f_lock);
}
}
return -EAGAIN;
}
-static struct lock_manager_operations nfsd_lease_mng_ops = {
+static const struct lock_manager_operations nfsd_lease_mng_ops = {
.fl_break = nfsd_break_deleg_cb,
.fl_release_private = nfsd_release_deleg_cb,
.fl_copy_lock = nfsd_copy_lock_deleg_cb,
memcpy(&open->op_delegate_stateid, &dp->dl_stateid, sizeof(dp->dl_stateid));
- dprintk("NFSD: delegation stateid=(%08x/%08x/%08x/%08x)\n\n",
- dp->dl_stateid.si_boot,
- dp->dl_stateid.si_stateownerid,
- dp->dl_stateid.si_fileid,
- dp->dl_stateid.si_generation);
+ dprintk("NFSD: delegation stateid=" STATEID_FMT "\n",
+ STATEID_VAL(&dp->dl_stateid));
out:
if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS
&& flag == NFS4_OPEN_DELEGATE_NONE
}
memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
- if (nfsd4_has_session(&resp->cstate))
+ if (nfsd4_has_session(&resp->cstate)) {
open->op_stateowner->so_confirmed = 1;
+ nfsd4_create_clid_dir(open->op_stateowner->so_client);
+ }
/*
* Attempt to hand out a delegation. No error return, because the
status = nfs_ok;
- dprintk("nfs4_process_open2: stateid=(%08x/%08x/%08x/%08x)\n",
- stp->st_stateid.si_boot, stp->st_stateid.si_stateownerid,
- stp->st_stateid.si_fileid, stp->st_stateid.si_generation);
+ dprintk("%s: stateid=" STATEID_FMT "\n", __func__,
+ STATEID_VAL(&stp->st_stateid));
out:
if (fp)
put_nfs4_file(fp);
{
if (time_after((unsigned long)boot_time,
(unsigned long)stateid->si_boot)) {
- dprintk("NFSD: stale stateid (%08x/%08x/%08x/%08x)!\n",
- stateid->si_boot, stateid->si_stateownerid,
- stateid->si_fileid, stateid->si_generation);
+ dprintk("NFSD: stale stateid " STATEID_FMT "!\n",
+ STATEID_VAL(stateid));
return 1;
}
return 0;
if (time_before((unsigned long)boot_time,
((unsigned long)stateid->si_boot)) &&
time_before((unsigned long)(stateid->si_boot + lease_time), get_seconds())) {
- dprintk("NFSD: expired stateid (%08x/%08x/%08x/%08x)!\n",
- stateid->si_boot, stateid->si_stateownerid,
- stateid->si_fileid, stateid->si_generation);
+ dprintk("NFSD: expired stateid " STATEID_FMT "!\n",
+ STATEID_VAL(stateid));
return 1;
}
return 0;
if (EXPIRED_STATEID(stateid))
return nfserr_expired;
- dprintk("NFSD: bad stateid (%08x/%08x/%08x/%08x)!\n",
- stateid->si_boot, stateid->si_stateownerid,
- stateid->si_fileid, stateid->si_generation);
+ dprintk("NFSD: bad stateid " STATEID_FMT "!\n",
+ STATEID_VAL(stateid));
return nfserr_bad_stateid;
}
struct svc_fh *current_fh = &cstate->current_fh;
__be32 status;
- dprintk("NFSD: preprocess_seqid_op: seqid=%d "
- "stateid = (%08x/%08x/%08x/%08x)\n", seqid,
- stateid->si_boot, stateid->si_stateownerid, stateid->si_fileid,
- stateid->si_generation);
+ dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__,
+ seqid, STATEID_VAL(stateid));
*stpp = NULL;
*sopp = NULL;
sop->so_confirmed = 1;
update_stateid(&stp->st_stateid);
memcpy(&oc->oc_resp_stateid, &stp->st_stateid, sizeof(stateid_t));
- dprintk("NFSD: nfsd4_open_confirm: success, seqid=%d "
- "stateid=(%08x/%08x/%08x/%08x)\n", oc->oc_seqid,
- stp->st_stateid.si_boot,
- stp->st_stateid.si_stateownerid,
- stp->st_stateid.si_fileid,
- stp->st_stateid.si_generation);
+ dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
+ __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stateid));
nfsd4_create_clid_dir(sop->so_client);
out:
struct nfs4_file *fp;
struct nfs4_delegation *dl;
- dprintk("NFSD:find_delegation_stateid stateid=(%08x/%08x/%08x/%08x)\n",
- stid->si_boot, stid->si_stateownerid,
- stid->si_fileid, stid->si_generation);
+ dprintk("NFSD: %s: stateid=" STATEID_FMT "\n", __func__,
+ STATEID_VAL(stid));
fp = find_file(ino);
if (!fp)
/* Hack!: For now, we're defining this just so we can use a pointer to it
* as a unique cookie to identify our (NFSv4's) posix locks. */
-static struct lock_manager_operations nfsd_posix_mng_ops = {
+static const struct lock_manager_operations nfsd_posix_mng_ops = {
};
static inline void
/* initialization to perform when the nfsd service is started: */
-static void
+static int
__nfs4_state_start(void)
{
unsigned long grace_time;
printk(KERN_INFO "NFSD: starting %ld-second grace period\n",
grace_time/HZ);
laundry_wq = create_singlethread_workqueue("nfsd4");
+ if (laundry_wq == NULL)
+ return -ENOMEM;
queue_delayed_work(laundry_wq, &laundromat_work, grace_time);
set_max_delegations();
+ return set_callback_cred();
}
-void
+int
nfs4_state_start(void)
{
+ int ret;
+
if (nfs4_init)
- return;
+ return 0;
nfsd4_load_reboot_recovery_data();
- __nfs4_state_start();
+ ret = __nfs4_state_start();
+ if (ret)
+ return ret;
nfs4_init = 1;
- return;
+ return 0;
}
time_t