#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
/* forward declarations */
-static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
-static struct nfs4_stateid * search_for_stateid(stateid_t *stid);
-static struct nfs4_delegation * search_for_delegation(stateid_t *stid);
-static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
-static int check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner);
+static int check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner);
/* Locking: */
*/
static DEFINE_SPINLOCK(recall_lock);
-static struct kmem_cache *stateowner_slab = NULL;
+static struct kmem_cache *openowner_slab = NULL;
+static struct kmem_cache *lockowner_slab = NULL;
static struct kmem_cache *file_slab = NULL;
static struct kmem_cache *stateid_slab = NULL;
static struct kmem_cache *deleg_slab = NULL;
#define FILE_HASH_BITS 8
#define FILE_HASH_SIZE (1 << FILE_HASH_BITS)
-/* hash table for (open)nfs4_stateid */
+/* hash table for (open)nfs4_ol_stateid */
#define STATEID_HASH_BITS 10
#define STATEID_HASH_SIZE (1 << STATEID_HASH_BITS)
#define STATEID_HASH_MASK (STATEID_HASH_SIZE - 1)
return hash_ptr(ino, FILE_HASH_BITS);
}
-static unsigned int stateid_hashval(u32 owner_id, u32 file_id)
+static unsigned int stateid_hashval(stateid_t *s)
{
- return (owner_id + file_id) & STATEID_HASH_MASK;
+ return opaque_hashval(&s->si_opaque, sizeof(stateid_opaque_t)) & STATEID_HASH_MASK;
}
static struct list_head file_hashtbl[FILE_HASH_SIZE];
__nfs4_file_put_access(fp, oflag);
}
+static inline void hash_stid(struct nfs4_stid *stid)
+{
+ stateid_t *s = &stid->sc_stateid;
+ unsigned int hashval;
+
+ hashval = stateid_hashval(s);
+ list_add(&stid->sc_hash, &stateid_hashtbl[hashval]);
+}
+
static struct nfs4_delegation *
-alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type)
+alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct svc_fh *current_fh, u32 type)
{
struct nfs4_delegation *dp;
struct nfs4_file *fp = stp->st_file;
get_nfs4_file(fp);
dp->dl_file = fp;
dp->dl_type = type;
- dp->dl_stateid.si_boot = boot_time;
- dp->dl_stateid.si_stateownerid = current_delegid++;
- dp->dl_stateid.si_fileid = 0;
- dp->dl_stateid.si_generation = 0;
+ dp->dl_stid.sc_type = NFS4_DELEG_STID;
+ dp->dl_stid.sc_stateid.si_boot = boot_time;
+ dp->dl_stid.sc_stateid.si_stateownerid = current_delegid++;
+ dp->dl_stid.sc_stateid.si_fileid = 0;
+ dp->dl_stid.sc_stateid.si_generation = 1;
+ hash_stid(&dp->dl_stid);
fh_copy_shallow(&dp->dl_fh, ¤t_fh->fh_handle);
dp->dl_time = 0;
atomic_set(&dp->dl_count, 1);
static void
unhash_delegation(struct nfs4_delegation *dp)
{
+ list_del_init(&dp->dl_stid.sc_hash);
list_del_init(&dp->dl_perclnt);
spin_lock(&recall_lock);
list_del_init(&dp->dl_perfile);
}
static int
-test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {
+test_share(struct nfs4_ol_stateid *stp, struct nfsd4_open *open) {
unsigned int access, deny;
set_access(&access, stp->st_access_bmap);
BUG();
}
-static void unhash_generic_stateid(struct nfs4_stateid *stp)
+static void unhash_generic_stateid(struct nfs4_ol_stateid *stp)
{
- list_del(&stp->st_hash);
+ list_del(&stp->st_stid.sc_hash);
list_del(&stp->st_perfile);
list_del(&stp->st_perstateowner);
}
-static void free_generic_stateid(struct nfs4_stateid *stp)
+static void close_generic_stateid(struct nfs4_ol_stateid *stp)
{
int i;
if (test_bit(i, &stp->st_access_bmap))
nfs4_file_put_access(stp->st_file,
nfs4_access_to_omode(i));
+ __clear_bit(i, &stp->st_access_bmap);
}
}
put_nfs4_file(stp->st_file);
+ stp->st_file = NULL;
+}
+
+static void free_generic_stateid(struct nfs4_ol_stateid *stp)
+{
+ close_generic_stateid(stp);
kmem_cache_free(stateid_slab, stp);
}
-static void release_lock_stateid(struct nfs4_stateid *stp)
+static void release_lock_stateid(struct nfs4_ol_stateid *stp)
{
struct file *file;
unhash_generic_stateid(stp);
file = find_any_file(stp->st_file);
if (file)
- locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
+ locks_remove_posix(file, (fl_owner_t)lockowner(stp->st_stateowner));
free_generic_stateid(stp);
}
-static void unhash_lockowner(struct nfs4_stateowner *sop)
+static void unhash_lockowner(struct nfs4_lockowner *lo)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
- list_del(&sop->so_idhash);
- list_del(&sop->so_strhash);
- list_del(&sop->so_perstateid);
- while (!list_empty(&sop->so_stateids)) {
- stp = list_first_entry(&sop->so_stateids,
- struct nfs4_stateid, st_perstateowner);
+ list_del(&lo->lo_owner.so_idhash);
+ list_del(&lo->lo_owner.so_strhash);
+ list_del(&lo->lo_perstateid);
+ while (!list_empty(&lo->lo_owner.so_stateids)) {
+ stp = list_first_entry(&lo->lo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
release_lock_stateid(stp);
}
}
-static void release_lockowner(struct nfs4_stateowner *sop)
+static void release_lockowner(struct nfs4_lockowner *lo)
{
- unhash_lockowner(sop);
- nfs4_put_stateowner(sop);
+ unhash_lockowner(lo);
+ nfs4_free_lockowner(lo);
}
static void
-release_stateid_lockowners(struct nfs4_stateid *open_stp)
+release_stateid_lockowners(struct nfs4_ol_stateid *open_stp)
{
- struct nfs4_stateowner *lock_sop;
+ struct nfs4_lockowner *lo;
while (!list_empty(&open_stp->st_lockowners)) {
- lock_sop = list_entry(open_stp->st_lockowners.next,
- struct nfs4_stateowner, so_perstateid);
- /* list_del(&open_stp->st_lockowners); */
- BUG_ON(lock_sop->so_is_open_owner);
- release_lockowner(lock_sop);
+ lo = list_entry(open_stp->st_lockowners.next,
+ struct nfs4_lockowner, lo_perstateid);
+ release_lockowner(lo);
}
}
-static void release_open_stateid(struct nfs4_stateid *stp)
+static void release_open_stateid(struct nfs4_ol_stateid *stp)
{
unhash_generic_stateid(stp);
release_stateid_lockowners(stp);
free_generic_stateid(stp);
}
-static void unhash_openowner(struct nfs4_stateowner *sop)
+static void unhash_openowner(struct nfs4_openowner *oo)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
- list_del(&sop->so_idhash);
- list_del(&sop->so_strhash);
- list_del(&sop->so_perclient);
- list_del(&sop->so_perstateid); /* XXX: necessary? */
- while (!list_empty(&sop->so_stateids)) {
- stp = list_first_entry(&sop->so_stateids,
- struct nfs4_stateid, st_perstateowner);
+ list_del(&oo->oo_owner.so_idhash);
+ list_del(&oo->oo_owner.so_strhash);
+ list_del(&oo->oo_perclient);
+ while (!list_empty(&oo->oo_owner.so_stateids)) {
+ stp = list_first_entry(&oo->oo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
release_open_stateid(stp);
}
}
-static void release_openowner(struct nfs4_stateowner *sop)
+static void release_openowner(struct nfs4_openowner *oo)
{
- unhash_openowner(sop);
- list_del(&sop->so_close_lru);
- nfs4_put_stateowner(sop);
+ unhash_openowner(oo);
+ list_del(&oo->oo_close_lru);
+ nfs4_free_openowner(oo);
}
#define SESSION_HASH_SIZE 512
static void
expire_client(struct nfs4_client *clp)
{
- struct nfs4_stateowner *sop;
+ struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
struct list_head reaplist;
unhash_delegation(dp);
}
while (!list_empty(&clp->cl_openowners)) {
- sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
- release_openowner(sop);
+ oo = list_entry(clp->cl_openowners.next, struct nfs4_openowner, oo_perclient);
+ release_openowner(oo);
}
nfsd4_shutdown_callback(clp);
if (clp->cl_cb_conn.cb_xprt)
*p++ = i++;
}
+static int
+same_stateid(stateid_t *id_one, stateid_t *id_two)
+{
+ if (id_one->si_stateownerid != id_two->si_stateownerid)
+ return 0;
+ return id_one->si_fileid == id_two->si_fileid;
+}
+
+static struct nfs4_stid *find_stateid(stateid_t *t)
+{
+ struct nfs4_stid *s;
+ unsigned int hashval;
+
+ hashval = stateid_hashval(t);
+ list_for_each_entry(s, &stateid_hashtbl[hashval], sc_hash)
+ if (same_stateid(&s->sc_stateid, t))
+ return s;
+ return NULL;
+}
+
+static struct nfs4_ol_stateid *find_ol_stateid(stateid_t *t)
+{
+ struct nfs4_stid *s;
+
+ s = find_stateid(t);
+ if (!s)
+ return NULL;
+ return openlockstateid(s);
+}
+
+static struct nfs4_stid *find_stateid_by_type(stateid_t *t, char typemask)
+{
+ struct nfs4_stid *s;
+
+ s = find_stateid(t);
+ if (!s)
+ return NULL;
+ if (typemask & s->sc_type)
+ return s;
+ return NULL;
+}
+
+static struct nfs4_ol_stateid *find_ol_stateid_by_type(stateid_t *t, char typemask)
+{
+ struct nfs4_stid *s;
+
+ s = find_stateid_by_type(t, typemask);
+ if (!s)
+ return NULL;
+ return openlockstateid(s);
+}
+
static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
struct svc_rqst *rqstp, nfs4_verifier *verf)
{
void
nfsd4_free_slabs(void)
{
- nfsd4_free_slab(&stateowner_slab);
+ nfsd4_free_slab(&openowner_slab);
+ nfsd4_free_slab(&lockowner_slab);
nfsd4_free_slab(&file_slab);
nfsd4_free_slab(&stateid_slab);
nfsd4_free_slab(&deleg_slab);
static int
nfsd4_init_slabs(void)
{
- stateowner_slab = kmem_cache_create("nfsd4_stateowners",
- sizeof(struct nfs4_stateowner), 0, 0, NULL);
- if (stateowner_slab == NULL)
+ openowner_slab = kmem_cache_create("nfsd4_openowners",
+ sizeof(struct nfs4_openowner), 0, 0, NULL);
+ if (openowner_slab == NULL)
+ goto out_nomem;
+ lockowner_slab = kmem_cache_create("nfsd4_lockowners",
+ sizeof(struct nfs4_openowner), 0, 0, NULL);
+ if (lockowner_slab == NULL)
goto out_nomem;
file_slab = kmem_cache_create("nfsd4_files",
sizeof(struct nfs4_file), 0, 0, NULL);
if (file_slab == NULL)
goto out_nomem;
stateid_slab = kmem_cache_create("nfsd4_stateids",
- sizeof(struct nfs4_stateid), 0, 0, NULL);
+ sizeof(struct nfs4_ol_stateid), 0, 0, NULL);
if (stateid_slab == NULL)
goto out_nomem;
deleg_slab = kmem_cache_create("nfsd4_delegations",
return -ENOMEM;
}
-void
-nfs4_free_stateowner(struct kref *kref)
+void nfs4_free_openowner(struct nfs4_openowner *oo)
+{
+ kfree(oo->oo_owner.so_owner.data);
+ kmem_cache_free(openowner_slab, oo);
+}
+
+void nfs4_free_lockowner(struct nfs4_lockowner *lo)
{
- struct nfs4_stateowner *sop =
- container_of(kref, struct nfs4_stateowner, so_ref);
- kfree(sop->so_owner.data);
- kmem_cache_free(stateowner_slab, sop);
+ kfree(lo->lo_owner.so_owner.data);
+ kmem_cache_free(lockowner_slab, lo);
}
static void init_nfs4_replay(struct nfs4_replay *rp)
rp->rp_buf = rp->rp_ibuf;
}
-static inline struct nfs4_stateowner *alloc_stateowner(struct xdr_netobj *owner, struct nfs4_client *clp)
+static inline void *alloc_stateowner(struct kmem_cache *slab, struct xdr_netobj *owner, struct nfs4_client *clp)
{
struct nfs4_stateowner *sop;
- sop = kmem_cache_alloc(stateowner_slab, GFP_KERNEL);
+ sop = kmem_cache_alloc(slab, GFP_KERNEL);
if (!sop)
return NULL;
sop->so_owner.data = kmemdup(owner->data, owner->len, GFP_KERNEL);
if (!sop->so_owner.data) {
- kmem_cache_free(stateowner_slab, sop);
+ kmem_cache_free(slab, sop);
return NULL;
}
sop->so_owner.len = owner->len;
- kref_init(&sop->so_ref);
- INIT_LIST_HEAD(&sop->so_perclient);
INIT_LIST_HEAD(&sop->so_stateids);
- INIT_LIST_HEAD(&sop->so_perstateid);
- INIT_LIST_HEAD(&sop->so_close_lru);
sop->so_id = current_ownerid++;
- sop->so_time = 0;
sop->so_client = clp;
init_nfs4_replay(&sop->so_replay);
return sop;
}
-static void hash_openowner(struct nfs4_stateowner *sop, struct nfs4_client *clp, unsigned int strhashval)
+static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, unsigned int strhashval)
{
unsigned int idhashval;
- idhashval = open_ownerid_hashval(sop->so_id);
- list_add(&sop->so_idhash, &open_ownerid_hashtbl[idhashval]);
- list_add(&sop->so_strhash, &open_ownerstr_hashtbl[strhashval]);
- list_add(&sop->so_perclient, &clp->cl_openowners);
+ idhashval = open_ownerid_hashval(oo->oo_owner.so_id);
+ list_add(&oo->oo_owner.so_idhash, &open_ownerid_hashtbl[idhashval]);
+ list_add(&oo->oo_owner.so_strhash, &open_ownerstr_hashtbl[strhashval]);
+ list_add(&oo->oo_perclient, &clp->cl_openowners);
}
-static struct nfs4_stateowner *
+static struct nfs4_openowner *
alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
- struct nfs4_stateowner *sop;
+ struct nfs4_openowner *oo;
- sop = alloc_stateowner(&open->op_owner, clp);
- if (!sop)
+ oo = alloc_stateowner(openowner_slab, &open->op_owner, clp);
+ if (!oo)
return NULL;
- sop->so_is_open_owner = 1;
- sop->so_seqid = open->op_seqid;
- sop->so_confirmed = 0;
- hash_openowner(sop, clp, strhashval);
- return sop;
+ oo->oo_owner.so_is_open_owner = 1;
+ oo->oo_owner.so_seqid = open->op_seqid;
+ oo->oo_confirmed = 0;
+ oo->oo_time = 0;
+ INIT_LIST_HEAD(&oo->oo_close_lru);
+ hash_openowner(oo, clp, strhashval);
+ return oo;
}
static inline void
-init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
- struct nfs4_stateowner *sop = open->op_stateowner;
- unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
+init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
+ struct nfs4_openowner *oo = open->op_openowner;
- INIT_LIST_HEAD(&stp->st_hash);
- INIT_LIST_HEAD(&stp->st_perstateowner);
INIT_LIST_HEAD(&stp->st_lockowners);
- INIT_LIST_HEAD(&stp->st_perfile);
- list_add(&stp->st_hash, &stateid_hashtbl[hashval]);
- list_add(&stp->st_perstateowner, &sop->so_stateids);
+ list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids);
list_add(&stp->st_perfile, &fp->fi_stateids);
- stp->st_stateowner = sop;
+ stp->st_stid.sc_type = NFS4_OPEN_STID;
+ stp->st_stateowner = &oo->oo_owner;
get_nfs4_file(fp);
stp->st_file = fp;
- stp->st_stateid.si_boot = boot_time;
- stp->st_stateid.si_stateownerid = sop->so_id;
- stp->st_stateid.si_fileid = fp->fi_id;
- stp->st_stateid.si_generation = 0;
+ stp->st_stid.sc_stateid.si_boot = boot_time;
+ stp->st_stid.sc_stateid.si_stateownerid = oo->oo_owner.so_id;
+ stp->st_stid.sc_stateid.si_fileid = fp->fi_id;
+ /* note will be incremented before first return to client: */
+ stp->st_stid.sc_stateid.si_generation = 0;
+ hash_stid(&stp->st_stid);
stp->st_access_bmap = 0;
stp->st_deny_bmap = 0;
__set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
}
static void
-move_to_close_lru(struct nfs4_stateowner *sop)
+move_to_close_lru(struct nfs4_openowner *oo)
{
- dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop);
+ dprintk("NFSD: move_to_close_lru nfs4_openowner %p\n", oo);
- list_move_tail(&sop->so_close_lru, &close_lru);
- sop->so_time = get_seconds();
+ list_move_tail(&oo->oo_close_lru, &close_lru);
+ oo->oo_time = get_seconds();
}
static int
(sop->so_client->cl_clientid.cl_id == clid->cl_id);
}
-static struct nfs4_stateowner *
+static struct nfs4_openowner *
find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
{
struct nfs4_stateowner *so = NULL;
list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
if (same_owner_str(so, &open->op_owner, &open->op_clientid))
- return so;
+ return container_of(so, struct nfs4_openowner, oo_owner);
}
return NULL;
}
{
struct inode *ino = current_fh->fh_dentry->d_inode;
struct nfs4_file *fp;
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
__be32 ret;
dprintk("NFSD: nfs4_share_conflict\n");
.lm_change = nfsd_change_deleg_cb,
};
+static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4_stateowner *so, u32 seqid)
+{
+ if (nfsd4_has_session(cstate))
+ return nfs_ok;
+ if (seqid == so->so_seqid - 1)
+ return nfserr_replay_me;
+ if (seqid == so->so_seqid)
+ return nfs_ok;
+ return nfserr_bad_seqid;
+}
__be32
nfsd4_process_open1(struct nfsd4_compound_state *cstate,
clientid_t *clientid = &open->op_clientid;
struct nfs4_client *clp = NULL;
unsigned int strhashval;
- struct nfs4_stateowner *sop = NULL;
+ struct nfs4_openowner *oo = NULL;
+ __be32 status;
if (!check_name(open->op_owner))
return nfserr_inval;
return nfserr_stale_clientid;
strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner);
- sop = find_openstateowner_str(strhashval, open);
- open->op_stateowner = sop;
- if (!sop) {
+ oo = find_openstateowner_str(strhashval, open);
+ open->op_openowner = oo;
+ if (!oo) {
/* Make sure the client's lease hasn't expired. */
clp = find_confirmed_client(clientid);
if (clp == NULL)
return nfserr_expired;
goto renew;
}
- /* When sessions are used, skip open sequenceid processing */
- if (nfsd4_has_session(cstate))
- goto renew;
- if (!sop->so_confirmed) {
+ if (!oo->oo_confirmed) {
/* Replace unconfirmed owners without checking for replay. */
- clp = sop->so_client;
- release_openowner(sop);
- open->op_stateowner = NULL;
- goto renew;
- }
- if (open->op_seqid == sop->so_seqid - 1) {
- if (sop->so_replay.rp_buflen)
- return nfserr_replay_me;
- /* The original OPEN failed so spectacularly
- * that we don't even have replay data saved!
- * Therefore, we have no choice but to continue
- * processing this OPEN; presumably, we'll
- * fail again for the same reason.
- */
- dprintk("nfsd4_process_open1: replay with no replay cache\n");
+ clp = oo->oo_owner.so_client;
+ release_openowner(oo);
+ open->op_openowner = NULL;
goto renew;
}
- if (open->op_seqid != sop->so_seqid)
- return nfserr_bad_seqid;
+ status = nfsd4_check_seqid(cstate, &oo->oo_owner, open->op_seqid);
+ if (status)
+ return status;
renew:
- if (open->op_stateowner == NULL) {
- sop = alloc_init_open_stateowner(strhashval, clp, open);
- if (sop == NULL)
+ if (open->op_openowner == NULL) {
+ oo = alloc_init_open_stateowner(strhashval, clp, open);
+ if (oo == NULL)
return nfserr_jukebox;
- open->op_stateowner = sop;
+ open->op_openowner = oo;
}
- list_del_init(&sop->so_close_lru);
- renew_client(sop->so_client);
+ list_del_init(&oo->oo_close_lru);
+ renew_client(oo->oo_owner.so_client);
return nfs_ok;
}
return nfs_ok;
}
-static struct nfs4_delegation *
-find_delegation_file(struct nfs4_file *fp, stateid_t *stid)
+static int share_access_to_flags(u32 share_access)
{
- struct nfs4_delegation *dp;
+ share_access &= ~NFS4_SHARE_WANT_MASK;
- spin_lock(&recall_lock);
- list_for_each_entry(dp, &fp->fi_delegations, dl_perfile)
- if (dp->dl_stateid.si_stateownerid == stid->si_stateownerid) {
- spin_unlock(&recall_lock);
- return dp;
- }
- spin_unlock(&recall_lock);
- return NULL;
+ return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
}
-static int share_access_to_flags(u32 share_access)
+static struct nfs4_delegation *find_deleg_stateid(stateid_t *s)
{
- share_access &= ~NFS4_SHARE_WANT_MASK;
+ struct nfs4_stid *ret;
- return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
+ ret = find_stateid_by_type(s, NFS4_DELEG_STID);
+ if (!ret)
+ return NULL;
+ return delegstateid(ret);
}
static __be32
int flags;
__be32 status = nfserr_bad_stateid;
- *dp = find_delegation_file(fp, &open->op_delegate_stateid);
+ *dp = find_deleg_stateid(&open->op_delegate_stateid);
if (*dp == NULL)
goto out;
flags = share_access_to_flags(open->op_share_access);
return nfs_ok;
if (status)
return status;
- open->op_stateowner->so_confirmed = 1;
+ open->op_openowner->oo_confirmed = 1;
return nfs_ok;
}
static __be32
-nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_stateid **stpp)
+nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_ol_stateid **stpp)
{
- struct nfs4_stateid *local;
- __be32 status = nfserr_share_denied;
- struct nfs4_stateowner *sop = open->op_stateowner;
+ struct nfs4_ol_stateid *local;
+ struct nfs4_openowner *oo = open->op_openowner;
list_for_each_entry(local, &fp->fi_stateids, st_perfile) {
/* ignore lock owners */
if (local->st_stateowner->so_is_open_owner == 0)
continue;
/* remember if we have seen this open owner */
- if (local->st_stateowner == sop)
+ if (local->st_stateowner == &oo->oo_owner)
*stpp = local;
/* check for conflicting share reservations */
if (!test_share(local, open))
- goto out;
+ return nfserr_share_denied;
}
- status = 0;
-out:
- return status;
+ return nfs_ok;
}
-static inline struct nfs4_stateid *
+static inline struct nfs4_ol_stateid *
nfs4_alloc_stateid(void)
{
return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
}
static __be32
-nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
+nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_ol_stateid **stpp,
struct nfs4_file *fp, struct svc_fh *cur_fh,
struct nfsd4_open *open)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
__be32 status;
stp = nfs4_alloc_stateid();
}
static __be32
-nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_stateid *stp, struct nfsd4_open *open)
+nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open)
{
u32 op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;
bool new_access;
static void
nfs4_set_claim_prev(struct nfsd4_open *open)
{
- open->op_stateowner->so_confirmed = 1;
- open->op_stateowner->so_client->cl_firststate = 1;
+ open->op_openowner->oo_confirmed = 1;
+ open->op_openowner->oo_owner.so_client->cl_firststate = 1;
}
/* Should we give out recallable state?: */
* Attempt to hand out a delegation.
*/
static void
-nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_stateid *stp)
+nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_ol_stateid *stp)
{
struct nfs4_delegation *dp;
- struct nfs4_stateowner *sop = stp->st_stateowner;
+ struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner);
int cb_up;
int status, flag = 0;
- cb_up = nfsd4_cb_channel_good(sop->so_client);
+ cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client);
flag = NFS4_OPEN_DELEGATE_NONE;
open->op_recall = 0;
switch (open->op_claim_type) {
* had the chance to reclaim theirs.... */
if (locks_in_grace())
goto out;
- if (!cb_up || !sop->so_confirmed)
+ if (!cb_up || !oo->oo_confirmed)
goto out;
if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
flag = NFS4_OPEN_DELEGATE_WRITE;
goto out;
}
- dp = alloc_init_deleg(sop->so_client, stp, fh, flag);
+ dp = alloc_init_deleg(oo->oo_owner.so_client, stp, fh, flag);
if (dp == NULL)
goto out_no_deleg;
status = nfs4_set_delegation(dp, flag);
if (status)
goto out_free;
- memcpy(&open->op_delegate_stateid, &dp->dl_stateid, sizeof(dp->dl_stateid));
+ memcpy(&open->op_delegate_stateid, &dp->dl_stid.sc_stateid, sizeof(dp->dl_stid.sc_stateid));
dprintk("NFSD: delegation stateid=" STATEID_FMT "\n",
- STATEID_VAL(&dp->dl_stateid));
+ STATEID_VAL(&dp->dl_stid.sc_stateid));
out:
if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS
&& flag == NFS4_OPEN_DELEGATE_NONE
struct nfsd4_compoundres *resp = rqstp->rq_resp;
struct nfs4_file *fp = NULL;
struct inode *ino = current_fh->fh_dentry->d_inode;
- struct nfs4_stateid *stp = NULL;
+ struct nfs4_ol_stateid *stp = NULL;
struct nfs4_delegation *dp = NULL;
__be32 status;
status = nfs4_upgrade_open(rqstp, fp, current_fh, stp, open);
if (status)
goto out;
- update_stateid(&stp->st_stateid);
} else {
status = nfs4_new_open(rqstp, &stp, fp, current_fh, open);
if (status)
goto out;
- init_stateid(stp, fp, open);
+ init_open_stateid(stp, fp, open);
status = nfsd4_truncate(rqstp, current_fh, open);
if (status) {
release_open_stateid(stp);
goto out;
}
- if (nfsd4_has_session(&resp->cstate))
- update_stateid(&stp->st_stateid);
}
- memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
+ 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))
- open->op_stateowner->so_confirmed = 1;
+ open->op_openowner->oo_confirmed = 1;
/*
* Attempt to hand out a delegation. No error return, because the
status = nfs_ok;
dprintk("%s: stateid=" STATEID_FMT "\n", __func__,
- STATEID_VAL(&stp->st_stateid));
+ STATEID_VAL(&stp->st_stid.sc_stateid));
out:
if (fp)
put_nfs4_file(fp);
* To finish the open response, we just need to set the rflags.
*/
open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
- if (!open->op_stateowner->so_confirmed &&
+ if (!open->op_openowner->oo_confirmed &&
!nfsd4_has_session(&resp->cstate))
open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
nfs4_laundromat(void)
{
struct nfs4_client *clp;
- struct nfs4_stateowner *sop;
+ struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
struct list_head *pos, *next, reaplist;
time_t cutoff = get_seconds() - nfsd4_lease;
}
test_val = nfsd4_lease;
list_for_each_safe(pos, next, &close_lru) {
- sop = list_entry(pos, struct nfs4_stateowner, so_close_lru);
- if (time_after((unsigned long)sop->so_time, (unsigned long)cutoff)) {
- u = sop->so_time - cutoff;
+ oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
+ if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
+ u = oo->oo_time - cutoff;
if (test_val > u)
test_val = u;
break;
}
dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
- sop->so_id);
- release_openowner(sop);
+ oo->oo_owner.so_id);
+ release_openowner(oo);
}
if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
queue_delayed_work(laundry_wq, &laundromat_work, t*HZ);
}
-static struct nfs4_stateowner *
-search_close_lru(u32 st_id, int flags)
+static struct nfs4_openowner * search_close_lru(u32 st_id)
{
- struct nfs4_stateowner *local = NULL;
+ struct nfs4_openowner *local;
- if (flags & CLOSE_STATE) {
- list_for_each_entry(local, &close_lru, so_close_lru) {
- if (local->so_id == st_id)
- return local;
- }
+ list_for_each_entry(local, &close_lru, oo_close_lru) {
+ if (local->oo_owner.so_id == st_id)
+ return local;
}
return NULL;
}
static inline int
-nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stateid *stp)
+nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
{
return fhp->fh_dentry->d_inode != stp->st_file->fi_inode;
}
}
static
-__be32 nfs4_check_openmode(struct nfs4_stateid *stp, int flags)
+__be32 nfs4_check_openmode(struct nfs4_ol_stateid *stp, int flags)
{
__be32 status = nfserr_openmode;
return locks_in_grace() && mandatory_lock(inode);
}
+/* Returns true iff a is later than b: */
+static bool stateid_generation_after(stateid_t *a, stateid_t *b)
+{
+ return (s32)a->si_generation - (s32)b->si_generation > 0;
+}
+
static int check_stateid_generation(stateid_t *in, stateid_t *ref, bool has_session)
{
/*
* when it is zero.
*/
if (has_session && in->si_generation == 0)
- goto out;
+ return nfs_ok;
+
+ if (in->si_generation == ref->si_generation)
+ return nfs_ok;
/* If the client sends us a stateid from the future, it's buggy: */
- if (in->si_generation > ref->si_generation)
+ if (stateid_generation_after(in, ref))
return nfserr_bad_stateid;
/*
- * The following, however, can happen. For example, if the
- * client sends an open and some IO at the same time, the open
- * may bump si_generation while the IO is still in flight.
- * Thanks to hard links and renames, the client never knows what
- * file an open will affect. So it could avoid that situation
- * only by serializing all opens and IO from the same open
- * owner. To recover from the old_stateid error, the client
- * will just have to retry the IO:
+ * However, we could see a stateid from the past, even from a
+ * non-buggy client. For example, if the client sends a lock
+ * while some IO is outstanding, the lock may bump si_generation
+ * while the IO is still in flight. The client could avoid that
+ * situation by waiting for responses on all the IO requests,
+ * but better performance may result in retrying IO that
+ * receives an old_stateid error if requests are rarely
+ * reordered in flight:
*/
- if (in->si_generation < ref->si_generation)
- return nfserr_old_stateid;
-out:
- return nfs_ok;
+ return nfserr_old_stateid;
}
static int is_delegation_stateid(stateid_t *stateid)
return stateid->si_fileid == 0;
}
-static int is_open_stateid(struct nfs4_stateid *stateid)
-{
- return stateid->st_openstp == NULL;
-}
-
__be32 nfs4_validate_stateid(stateid_t *stateid, bool has_session)
{
- struct nfs4_stateid *stp = NULL;
- __be32 status = nfserr_stale_stateid;
+ struct nfs4_stid *s;
+ struct nfs4_ol_stateid *ols;
+ __be32 status;
if (STALE_STATEID(stateid))
- goto out;
-
- status = nfserr_expired;
- stp = search_for_stateid(stateid);
- if (!stp)
- goto out;
- status = nfserr_bad_stateid;
-
- if (!stp->st_stateowner->so_confirmed)
- goto out;
+ return nfserr_stale_stateid;
- status = check_stateid_generation(stateid, &stp->st_stateid, has_session);
+ s = find_stateid(stateid);
+ if (!s)
+ return nfserr_stale_stateid;
+ status = check_stateid_generation(stateid, &s->sc_stateid, has_session);
if (status)
- goto out;
-
- status = nfs_ok;
-out:
- return status;
+ return status;
+ if (!(s->sc_type & (NFS4_OPEN_STID | NFS4_LOCK_STID)))
+ return nfs_ok;
+ ols = openlockstateid(s);
+ if (ols->st_stateowner->so_is_open_owner
+ && !openowner(ols->st_stateowner)->oo_confirmed)
+ return nfserr_bad_stateid;
+ return nfs_ok;
}
/*
nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
stateid_t *stateid, int flags, struct file **filpp)
{
- struct nfs4_stateid *stp = NULL;
+ struct nfs4_stid *s;
+ struct nfs4_ol_stateid *stp = NULL;
struct nfs4_delegation *dp = NULL;
struct svc_fh *current_fh = &cstate->current_fh;
struct inode *ino = current_fh->fh_dentry->d_inode;
* but that we can't find, is expired:
*/
status = nfserr_expired;
- if (is_delegation_stateid(stateid)) {
- dp = find_delegation_stateid(ino, stateid);
- if (!dp)
- goto out;
- status = check_stateid_generation(stateid, &dp->dl_stateid, nfsd4_has_session(cstate));
- if (status)
- goto out;
+ s = find_stateid(stateid);
+ if (!s)
+ goto out;
+ status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));
+ if (status)
+ goto out;
+ if (s->sc_type == NFS4_DELEG_STID) {
+ dp = delegstateid(s);
status = nfs4_check_delegmode(dp, flags);
if (status)
goto out;
BUG_ON(!*filpp);
}
} else { /* open or lock stateid */
- stp = find_stateid(stateid, flags);
- if (!stp)
- goto out;
+ stp = openlockstateid(s);
status = nfserr_bad_stateid;
if (nfs4_check_fh(current_fh, stp))
goto out;
- if (!stp->st_stateowner->so_confirmed)
- goto out;
- status = check_stateid_generation(stateid, &stp->st_stateid,
- nfsd4_has_session(cstate));
- if (status)
+ if (stp->st_stateowner->so_is_open_owner
+ && !openowner(stp->st_stateowner)->oo_confirmed)
goto out;
status = nfs4_check_openmode(stp, flags);
if (status)
static __be32
nfsd4_free_delegation_stateid(stateid_t *stateid)
{
- struct nfs4_delegation *dp = search_for_delegation(stateid);
+ struct nfs4_delegation *dp = find_deleg_stateid(stateid);
if (dp)
return nfserr_locks_held;
+
return nfserr_bad_stateid;
}
static __be32
-nfsd4_free_lock_stateid(struct nfs4_stateid *stp)
+nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp)
{
- if (check_for_locks(stp->st_file, stp->st_stateowner))
+ if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner)))
return nfserr_locks_held;
release_lock_stateid(stp);
return nfs_ok;
struct nfsd4_free_stateid *free_stateid)
{
stateid_t *stateid = &free_stateid->fr_stateid;
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
__be32 ret;
nfs4_lock_state();
goto out;
}
- stp = search_for_stateid(stateid);
+ stp = find_ol_stateid(stateid);
if (!stp) {
ret = nfserr_bad_stateid;
goto out;
}
- if (stateid->si_generation != 0) {
- if (stateid->si_generation < stp->st_stateid.si_generation) {
- ret = nfserr_old_stateid;
- goto out;
- }
- if (stateid->si_generation > stp->st_stateid.si_generation) {
- ret = nfserr_bad_stateid;
- goto out;
- }
- }
+ ret = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, 1);
+ if (ret)
+ goto out;
- if (is_open_stateid(stp)) {
+ if (stp->st_stid.sc_type == NFS4_OPEN_STID) {
ret = nfserr_locks_held;
goto out;
} else {
RD_STATE : WR_STATE;
}
+static __be32 nfs4_nospecial_stateid_checks(stateid_t *stateid)
+{
+ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+ return nfserr_bad_stateid;
+ if (STALE_STATEID(stateid))
+ return nfserr_stale_stateid;
+ return nfs_ok;
+}
+
+static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_ol_stateid *stp)
+{
+ struct svc_fh *current_fh = &cstate->current_fh;
+ struct nfs4_stateowner *sop = stp->st_stateowner;
+ __be32 status;
+
+ if (nfs4_check_fh(current_fh, stp))
+ return nfserr_bad_stateid;
+ status = nfsd4_check_seqid(cstate, sop, seqid);
+ if (status)
+ return status;
+ return check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate));
+}
+
/*
* Checks for sequence id mutating operations.
*/
static __be32
nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
- stateid_t *stateid, int flags,
- struct nfs4_stateowner **sopp,
- struct nfs4_stateid **stpp)
+ stateid_t *stateid, char typemask,
+ struct nfs4_ol_stateid **stpp)
{
- struct nfs4_stateid *stp;
- struct nfs4_stateowner *sop;
- struct svc_fh *current_fh = &cstate->current_fh;
__be32 status;
dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__,
seqid, STATEID_VAL(stateid));
*stpp = NULL;
- *sopp = NULL;
-
- if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) {
- dprintk("NFSD: preprocess_seqid_op: magic stateid!\n");
- return nfserr_bad_stateid;
- }
-
- if (STALE_STATEID(stateid))
- return nfserr_stale_stateid;
-
- /*
- * We return BAD_STATEID if filehandle doesn't match stateid,
- * the confirmed flag is incorrecly set, or the generation
- * number is incorrect.
- */
- stp = find_stateid(stateid, flags);
- if (stp == NULL) {
- /*
- * Also, we should make sure this isn't just the result of
- * a replayed close:
- */
- sop = search_close_lru(stateid->si_stateownerid, flags);
- /* It's not stale; let's assume it's expired: */
- if (sop == NULL)
- return nfserr_expired;
- *sopp = sop;
- goto check_replay;
- }
-
- *stpp = stp;
- *sopp = sop = stp->st_stateowner;
+ status = nfs4_nospecial_stateid_checks(stateid);
+ if (status)
+ return status;
+ *stpp = find_ol_stateid_by_type(stateid, typemask);
+ if (*stpp == NULL)
+ return nfserr_expired;
+ cstate->replay_owner = (*stpp)->st_stateowner;
+ renew_client((*stpp)->st_stateowner->so_client);
- if (nfs4_check_fh(current_fh, stp)) {
- dprintk("NFSD: preprocess_seqid_op: fh-stateid mismatch!\n");
- return nfserr_bad_stateid;
- }
+ return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp);
+}
- /*
- * We now validate the seqid and stateid generation numbers.
- * For the moment, we ignore the possibility of
- * generation number wraparound.
- */
- if (!nfsd4_has_session(cstate) && seqid != sop->so_seqid)
- goto check_replay;
+static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, struct nfs4_ol_stateid **stpp)
+{
+ __be32 status;
+ struct nfs4_openowner *oo;
- if (sop->so_confirmed && flags & CONFIRM) {
- dprintk("NFSD: preprocess_seqid_op: expected"
- " unconfirmed stateowner!\n");
- return nfserr_bad_stateid;
- }
- if (!sop->so_confirmed && !(flags & CONFIRM)) {
- dprintk("NFSD: preprocess_seqid_op: stateowner not"
- " confirmed yet!\n");
- return nfserr_bad_stateid;
- }
- status = check_stateid_generation(stateid, &stp->st_stateid, nfsd4_has_session(cstate));
+ status = nfs4_preprocess_seqid_op(cstate, seqid, stateid,
+ NFS4_OPEN_STID, stpp);
if (status)
return status;
- renew_client(sop->so_client);
+ oo = openowner((*stpp)->st_stateowner);
+ if (!oo->oo_confirmed)
+ return nfserr_bad_stateid;
return nfs_ok;
-
-check_replay:
- if (seqid == sop->so_seqid - 1) {
- dprintk("NFSD: preprocess_seqid_op: retransmission?\n");
- /* indicate replay to calling function */
- return nfserr_replay_me;
- }
- dprintk("NFSD: preprocess_seqid_op: bad seqid (expected %d, got %d)\n",
- sop->so_seqid, seqid);
- *sopp = NULL;
- return nfserr_bad_seqid;
}
__be32
struct nfsd4_open_confirm *oc)
{
__be32 status;
- struct nfs4_stateowner *sop;
- struct nfs4_stateid *stp;
+ struct nfs4_openowner *oo;
+ struct nfs4_ol_stateid *stp;
dprintk("NFSD: nfsd4_open_confirm on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(cstate,
+ status = nfs4_preprocess_seqid_op(cstate,
oc->oc_seqid, &oc->oc_req_stateid,
- CONFIRM | OPEN_STATE,
- &oc->oc_stateowner, &stp)))
- goto out;
-
- sop = oc->oc_stateowner;
- sop->so_confirmed = 1;
- update_stateid(&stp->st_stateid);
- memcpy(&oc->oc_resp_stateid, &stp->st_stateid, sizeof(stateid_t));
+ NFS4_OPEN_STID, &stp);
+ if (status)
+ goto out;
+ oo = openowner(stp->st_stateowner);
+ status = nfserr_bad_stateid;
+ if (oo->oo_confirmed)
+ goto out;
+ oo->oo_confirmed = 1;
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&oc->oc_resp_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
- __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stateid));
+ __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid));
- nfsd4_create_clid_dir(sop->so_client);
+ nfsd4_create_clid_dir(oo->oo_owner.so_client);
+ status = nfs_ok;
out:
- if (oc->oc_stateowner) {
- nfs4_get_stateowner(oc->oc_stateowner);
- cstate->replay_owner = oc->oc_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
-static inline void nfs4_file_downgrade(struct nfs4_stateid *stp, unsigned int to_access)
+static inline void nfs4_file_downgrade(struct nfs4_ol_stateid *stp, unsigned int to_access)
{
int i;
struct nfsd4_open_downgrade *od)
{
__be32 status;
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
return nfserr_inval;
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(cstate,
- od->od_seqid,
- &od->od_stateid,
- OPEN_STATE,
- &od->od_stateowner, &stp)))
+ status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,
+ &od->od_stateid, &stp);
+ if (status)
goto out;
-
status = nfserr_inval;
if (!test_bit(od->od_share_access, &stp->st_access_bmap)) {
dprintk("NFSD:access not a subset current bitmap: 0x%lx, input access=%08x\n",
reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
- update_stateid(&stp->st_stateid);
- memcpy(&od->od_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
status = nfs_ok;
out:
- if (od->od_stateowner) {
- nfs4_get_stateowner(od->od_stateowner);
- cstate->replay_owner = od->od_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
struct nfsd4_close *close)
{
__be32 status;
- struct nfs4_stateid *stp;
+ struct nfs4_openowner *oo;
+ struct nfs4_ol_stateid *stp;
dprintk("NFSD: nfsd4_close on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
nfs4_lock_state();
/* check close_lru for replay */
- if ((status = nfs4_preprocess_seqid_op(cstate,
- close->cl_seqid,
- &close->cl_stateid,
- OPEN_STATE | CLOSE_STATE,
- &close->cl_stateowner, &stp)))
+ status = nfs4_preprocess_confirmed_seqid_op(cstate, close->cl_seqid,
+ &close->cl_stateid, &stp);
+ if (stp == NULL && status == nfserr_expired) {
+ /*
+ * Also, we should make sure this isn't just the result of
+ * a replayed close:
+ */
+ oo = search_close_lru(close->cl_stateid.si_stateownerid);
+ /* It's not stale; let's assume it's expired: */
+ if (oo == NULL)
+ goto out;
+ cstate->replay_owner = &oo->oo_owner;
+ status = nfsd4_check_seqid(cstate, &oo->oo_owner, close->cl_seqid);
+ if (status)
+ goto out;
+ status = nfserr_bad_seqid;
+ }
+ if (status)
goto out;
+ oo = openowner(stp->st_stateowner);
status = nfs_ok;
- update_stateid(&stp->st_stateid);
- memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
/* release_stateid() calls nfsd_close() if needed */
release_open_stateid(stp);
* released by the laundromat service after the lease period
* to enable us to handle CLOSE replay
*/
- if (list_empty(&close->cl_stateowner->so_stateids))
- move_to_close_lru(close->cl_stateowner);
+ if (list_empty(&oo->oo_owner.so_stateids))
+ move_to_close_lru(oo);
out:
- if (close->cl_stateowner) {
- nfs4_get_stateowner(close->cl_stateowner);
- cstate->replay_owner = close->cl_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
if (!is_delegation_stateid(stateid))
goto out;
status = nfserr_expired;
- dp = find_delegation_stateid(inode, stateid);
+ dp = find_deleg_stateid(stateid);
if (!dp)
goto out;
- status = check_stateid_generation(stateid, &dp->dl_stateid, nfsd4_has_session(cstate));
+ status = check_stateid_generation(stateid, &dp->dl_stid.sc_stateid, nfsd4_has_session(cstate));
if (status)
goto out;
renew_client(dp->dl_client);
static struct list_head lock_ownerid_hashtbl[LOCK_HASH_SIZE];
static struct list_head lock_ownerstr_hashtbl[LOCK_HASH_SIZE];
-static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
-
-static int
-same_stateid(stateid_t *id_one, stateid_t *id_two)
-{
- if (id_one->si_stateownerid != id_two->si_stateownerid)
- return 0;
- return id_one->si_fileid == id_two->si_fileid;
-}
-
-static struct nfs4_stateid *
-find_stateid(stateid_t *stid, int flags)
-{
- struct nfs4_stateid *local;
- u32 st_id = stid->si_stateownerid;
- u32 f_id = stid->si_fileid;
- unsigned int hashval;
-
- dprintk("NFSD: find_stateid flags 0x%x\n",flags);
- if (flags & (LOCK_STATE | RD_STATE | WR_STATE)) {
- hashval = stateid_hashval(st_id, f_id);
- list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
- if ((local->st_stateid.si_stateownerid == st_id) &&
- (local->st_stateid.si_fileid == f_id))
- return local;
- }
- }
-
- if (flags & (OPEN_STATE | RD_STATE | WR_STATE)) {
- hashval = stateid_hashval(st_id, f_id);
- list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
- if ((local->st_stateid.si_stateownerid == st_id) &&
- (local->st_stateid.si_fileid == f_id))
- return local;
- }
- }
- return NULL;
-}
-
-static struct nfs4_stateid *
-search_for_stateid(stateid_t *stid)
-{
- struct nfs4_stateid *local;
- unsigned int hashval = stateid_hashval(stid->si_stateownerid, stid->si_fileid);
-
- list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
- if (same_stateid(&local->st_stateid, stid))
- return local;
- }
-
- list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
- if (same_stateid(&local->st_stateid, stid))
- return local;
- }
- return NULL;
-}
-
-static struct nfs4_delegation *
-search_for_delegation(stateid_t *stid)
-{
- struct nfs4_file *fp;
- struct nfs4_delegation *dp;
- struct list_head *pos;
- int i;
-
- for (i = 0; i < FILE_HASH_SIZE; i++) {
- list_for_each_entry(fp, &file_hashtbl[i], fi_hash) {
- list_for_each(pos, &fp->fi_delegations) {
- dp = list_entry(pos, struct nfs4_delegation, dl_perfile);
- if (same_stateid(&dp->dl_stateid, stid))
- return dp;
- }
- }
- }
- return NULL;
-}
-
-static struct nfs4_delegation *
-find_delegation_stateid(struct inode *ino, stateid_t *stid)
-{
- struct nfs4_file *fp;
- struct nfs4_delegation *dl;
-
- dprintk("NFSD: %s: stateid=" STATEID_FMT "\n", __func__,
- STATEID_VAL(stid));
-
- fp = find_file(ino);
- if (!fp)
- return NULL;
- dl = find_delegation_file(fp, stid);
- put_nfs4_file(fp);
- return dl;
-}
/*
* TODO: Linux file offsets are _signed_ 64-bit quantities, which means that
static inline void
nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
{
- struct nfs4_stateowner *sop;
+ struct nfs4_lockowner *lo;
if (fl->fl_lmops == &nfsd_posix_mng_ops) {
- sop = (struct nfs4_stateowner *) fl->fl_owner;
- kref_get(&sop->so_ref);
- deny->ld_sop = sop;
- deny->ld_clientid = sop->so_client->cl_clientid;
+ lo = (struct nfs4_lockowner *) fl->fl_owner;
+ deny->ld_owner.data = kmemdup(lo->lo_owner.so_owner.data,
+ lo->lo_owner.so_owner.len, GFP_KERNEL);
+ if (!deny->ld_owner.data)
+ /* We just don't care that much */
+ goto nevermind;
+ deny->ld_owner.len = lo->lo_owner.so_owner.len;
+ deny->ld_clientid = lo->lo_owner.so_client->cl_clientid;
} else {
- deny->ld_sop = NULL;
+nevermind:
+ deny->ld_owner.len = 0;
+ deny->ld_owner.data = NULL;
deny->ld_clientid.cl_boot = 0;
deny->ld_clientid.cl_id = 0;
}
deny->ld_type = NFS4_WRITE_LT;
}
-static struct nfs4_stateowner *
-find_lockstateowner_str(struct inode *inode, clientid_t *clid,
+static struct nfs4_lockowner *
+find_lockowner_str(struct inode *inode, clientid_t *clid,
struct xdr_netobj *owner)
{
unsigned int hashval = lock_ownerstr_hashval(inode, clid->cl_id, owner);
list_for_each_entry(op, &lock_ownerstr_hashtbl[hashval], so_strhash) {
if (same_owner_str(op, owner, clid))
- return op;
+ return lockowner(op);
}
return NULL;
}
-static void hash_lockowner(struct nfs4_stateowner *sop, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp)
+static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp)
{
unsigned int idhashval;
- idhashval = lockownerid_hashval(sop->so_id);
- list_add(&sop->so_idhash, &lock_ownerid_hashtbl[idhashval]);
- list_add(&sop->so_strhash, &lock_ownerstr_hashtbl[strhashval]);
- list_add(&sop->so_perstateid, &open_stp->st_lockowners);
+ idhashval = lockownerid_hashval(lo->lo_owner.so_id);
+ list_add(&lo->lo_owner.so_idhash, &lock_ownerid_hashtbl[idhashval]);
+ list_add(&lo->lo_owner.so_strhash, &lock_ownerstr_hashtbl[strhashval]);
+ list_add(&lo->lo_perstateid, &open_stp->st_lockowners);
}
/*
* strhashval = lock_ownerstr_hashval
*/
-static struct nfs4_stateowner *
-alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp, struct nfsd4_lock *lock) {
- struct nfs4_stateowner *sop;
+static struct nfs4_lockowner *
+alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp, struct nfsd4_lock *lock) {
+ struct nfs4_lockowner *lo;
- sop = alloc_stateowner(&lock->lk_new_owner, clp);
- if (!sop)
+ lo = alloc_stateowner(lockowner_slab, &lock->lk_new_owner, clp);
+ if (!lo)
return NULL;
- INIT_LIST_HEAD(&sop->so_stateids);
- sop->so_is_open_owner = 0;
+ INIT_LIST_HEAD(&lo->lo_owner.so_stateids);
+ lo->lo_owner.so_is_open_owner = 0;
/* It is the openowner seqid that will be incremented in encode in the
* case of new lockowners; so increment the lock seqid manually: */
- sop->so_seqid = lock->lk_new_lock_seqid + 1;
- sop->so_confirmed = 1;
- hash_lockowner(sop, strhashval, clp, open_stp);
- return sop;
+ lo->lo_owner.so_seqid = lock->lk_new_lock_seqid + 1;
+ hash_lockowner(lo, strhashval, clp, open_stp);
+ return lo;
}
-static struct nfs4_stateid *
-alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struct nfs4_stateid *open_stp)
+static struct nfs4_ol_stateid *
+alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_ol_stateid *open_stp)
{
- struct nfs4_stateid *stp;
- unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
+ struct nfs4_ol_stateid *stp;
stp = nfs4_alloc_stateid();
if (stp == NULL)
goto out;
- INIT_LIST_HEAD(&stp->st_hash);
- INIT_LIST_HEAD(&stp->st_perfile);
- INIT_LIST_HEAD(&stp->st_perstateowner);
- INIT_LIST_HEAD(&stp->st_lockowners); /* not used */
- list_add(&stp->st_hash, &lockstateid_hashtbl[hashval]);
list_add(&stp->st_perfile, &fp->fi_stateids);
- list_add(&stp->st_perstateowner, &sop->so_stateids);
- stp->st_stateowner = sop;
+ list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);
+ stp->st_stateowner = &lo->lo_owner;
+ stp->st_stid.sc_type = NFS4_LOCK_STID;
get_nfs4_file(fp);
stp->st_file = fp;
- stp->st_stateid.si_boot = boot_time;
- stp->st_stateid.si_stateownerid = sop->so_id;
- stp->st_stateid.si_fileid = fp->fi_id;
- stp->st_stateid.si_generation = 0;
+ stp->st_stid.sc_stateid.si_boot = boot_time;
+ stp->st_stid.sc_stateid.si_stateownerid = lo->lo_owner.so_id;
+ stp->st_stid.sc_stateid.si_fileid = fp->fi_id;
+ /* note will be incremented before first return to client: */
+ stp->st_stid.sc_stateid.si_generation = 0;
+ hash_stid(&stp->st_stid);
stp->st_access_bmap = 0;
stp->st_deny_bmap = open_stp->st_deny_bmap;
stp->st_openstp = open_stp;
LOFF_OVERFLOW(offset, length)));
}
-static void get_lock_access(struct nfs4_stateid *lock_stp, u32 access)
+static void get_lock_access(struct nfs4_ol_stateid *lock_stp, u32 access)
{
struct nfs4_file *fp = lock_stp->st_file;
int oflag = nfs4_access_to_omode(access);
nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_lock *lock)
{
- struct nfs4_stateowner *open_sop = NULL;
- struct nfs4_stateowner *lock_sop = NULL;
- struct nfs4_stateid *lock_stp;
+ struct nfs4_openowner *open_sop = NULL;
+ struct nfs4_lockowner *lock_sop = NULL;
+ struct nfs4_ol_stateid *lock_stp;
struct nfs4_file *fp;
struct file *filp = NULL;
struct file_lock file_lock;
* Use open owner and open stateid to create lock owner and
* lock stateid.
*/
- struct nfs4_stateid *open_stp = NULL;
+ struct nfs4_ol_stateid *open_stp = NULL;
status = nfserr_stale_clientid;
if (!nfsd4_has_session(cstate) &&
goto out;
/* validate and update open stateid and open seqid */
- status = nfs4_preprocess_seqid_op(cstate,
+ status = nfs4_preprocess_confirmed_seqid_op(cstate,
lock->lk_new_open_seqid,
&lock->lk_new_open_stateid,
- OPEN_STATE,
- &lock->lk_replay_owner, &open_stp);
+ &open_stp);
if (status)
goto out;
+ open_sop = openowner(open_stp->st_stateowner);
status = nfserr_bad_stateid;
- open_sop = lock->lk_replay_owner;
if (!nfsd4_has_session(cstate) &&
- !same_clid(&open_sop->so_client->cl_clientid,
+ !same_clid(&open_sop->oo_owner.so_client->cl_clientid,
&lock->v.new.clientid))
goto out;
/* create lockowner and lock stateid */
fp = open_stp->st_file;
- strhashval = lock_ownerstr_hashval(fp->fi_inode,
- open_sop->so_client->cl_clientid.cl_id,
+ strhashval = lock_ownerstr_hashval(fp->fi_inode,
+ open_sop->oo_owner.so_client->cl_clientid.cl_id,
&lock->v.new.owner);
/* XXX: Do we need to check for duplicate stateowners on
* the same file, or should they just be allowed (and
* create new stateids)? */
status = nfserr_jukebox;
lock_sop = alloc_init_lock_stateowner(strhashval,
- open_sop->so_client, open_stp, lock);
+ open_sop->oo_owner.so_client, open_stp, lock);
if (lock_sop == NULL)
goto out;
lock_stp = alloc_init_lock_stateid(lock_sop, fp, open_stp);
} else {
/* lock (lock owner + lock stateid) already exists */
status = nfs4_preprocess_seqid_op(cstate,
- lock->lk_old_lock_seqid,
- &lock->lk_old_lock_stateid,
- LOCK_STATE,
- &lock->lk_replay_owner, &lock_stp);
+ lock->lk_old_lock_seqid,
+ &lock->lk_old_lock_stateid,
+ NFS4_LOCK_STID, &lock_stp);
if (status)
goto out;
- lock_sop = lock->lk_replay_owner;
+ lock_sop = lockowner(lock_stp->st_stateowner);
fp = lock_stp->st_file;
}
- /* lock->lk_replay_owner and lock_stp have been created or found */
+ /* lock_sop and lock_stp have been created or found */
lkflg = setlkflg(lock->lk_type);
status = nfs4_check_openmode(lock_stp, lkflg);
err = vfs_lock_file(filp, F_SETLK, &file_lock, &conflock);
switch (-err) {
case 0: /* success! */
- update_stateid(&lock_stp->st_stateid);
- memcpy(&lock->lk_resp_stateid, &lock_stp->st_stateid,
+ update_stateid(&lock_stp->st_stid.sc_stateid);
+ memcpy(&lock->lk_resp_stateid, &lock_stp->st_stid.sc_stateid,
sizeof(stateid_t));
status = 0;
break;
out:
if (status && lock->lk_is_new && lock_sop)
release_lockowner(lock_sop);
- if (lock->lk_replay_owner) {
- nfs4_get_stateowner(lock->lk_replay_owner);
- cstate->replay_owner = lock->lk_replay_owner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
{
struct inode *inode;
struct file_lock file_lock;
+ struct nfs4_lockowner *lo;
int error;
__be32 status;
if (check_lock_length(lockt->lt_offset, lockt->lt_length))
return nfserr_inval;
- lockt->lt_stateowner = NULL;
nfs4_lock_state();
status = nfserr_stale_clientid;
goto out;
}
- lockt->lt_stateowner = find_lockstateowner_str(inode,
- &lockt->lt_clientid, &lockt->lt_owner);
- if (lockt->lt_stateowner)
- file_lock.fl_owner = (fl_owner_t)lockt->lt_stateowner;
+ lo = find_lockowner_str(inode, &lockt->lt_clientid, &lockt->lt_owner);
+ if (lo)
+ file_lock.fl_owner = (fl_owner_t)lo;
file_lock.fl_pid = current->tgid;
file_lock.fl_flags = FL_POSIX;
nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_locku *locku)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
struct file *filp = NULL;
struct file_lock file_lock;
__be32 status;
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(cstate,
- locku->lu_seqid,
- &locku->lu_stateid,
- LOCK_STATE,
- &locku->lu_stateowner, &stp)))
+ status = nfs4_preprocess_seqid_op(cstate, locku->lu_seqid,
+ &locku->lu_stateid, NFS4_LOCK_STID, &stp);
+ if (status)
goto out;
-
filp = find_any_file(stp->st_file);
if (!filp) {
status = nfserr_lock_range;
BUG_ON(!filp);
locks_init_lock(&file_lock);
file_lock.fl_type = F_UNLCK;
- file_lock.fl_owner = (fl_owner_t) locku->lu_stateowner;
+ file_lock.fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
file_lock.fl_pid = current->tgid;
file_lock.fl_file = filp;
file_lock.fl_flags = FL_POSIX;
/*
* OK, unlock succeeded; the only thing left to do is update the stateid.
*/
- update_stateid(&stp->st_stateid);
- memcpy(&locku->lu_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
out:
- if (locku->lu_stateowner) {
- nfs4_get_stateowner(locku->lu_stateowner);
- cstate->replay_owner = locku->lu_stateowner;
- }
nfs4_unlock_state();
return status;
* 0: no locks held by lockowner
*/
static int
-check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner)
+check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner)
{
struct file_lock **flpp;
struct inode *inode = filp->fi_inode;
{
clientid_t *clid = &rlockowner->rl_clientid;
struct nfs4_stateowner *sop;
- struct nfs4_stateid *stp;
+ struct nfs4_lockowner *lo;
+ struct nfs4_ol_stateid *stp;
struct xdr_netobj *owner = &rlockowner->rl_owner;
struct list_head matches;
int i;
continue;
list_for_each_entry(stp, &sop->so_stateids,
st_perstateowner) {
- if (check_for_locks(stp->st_file, sop))
+ lo = lockowner(sop);
+ if (check_for_locks(stp->st_file, lo))
goto out;
- /* Note: so_perclient unused for lockowners,
- * so it's OK to fool with here. */
- list_add(&sop->so_perclient, &matches);
+ list_add(&lo->lo_list, &matches);
}
}
}
* have been checked. */
status = nfs_ok;
while (!list_empty(&matches)) {
- sop = list_entry(matches.next, struct nfs4_stateowner,
- so_perclient);
+ lo = list_entry(matches.next, struct nfs4_lockowner,
+ lo_list);
/* unhash_stateowner deletes so_perclient only
* for openowners. */
- list_del(&sop->so_perclient);
- release_lockowner(sop);
+ list_del(&lo->lo_list);
+ release_lockowner(lo);
}
out:
nfs4_unlock_state();
INIT_LIST_HEAD(&open_ownerstr_hashtbl[i]);
INIT_LIST_HEAD(&open_ownerid_hashtbl[i]);
}
- for (i = 0; i < STATEID_HASH_SIZE; i++) {
+ for (i = 0; i < STATEID_HASH_SIZE; i++)
INIT_LIST_HEAD(&stateid_hashtbl[i]);
- INIT_LIST_HEAD(&lockstateid_hashtbl[i]);
- }
for (i = 0; i < LOCK_HASH_SIZE; i++) {
INIT_LIST_HEAD(&lock_ownerid_hashtbl[i]);
INIT_LIST_HEAD(&lock_ownerstr_hashtbl[i]);
projects / deliverable / linux.git / blobdiff