*
*/
-#include <linux/idr.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/slab.h>
static struct list_head del_recall_lru;
+static void nfsd4_free_file(struct nfs4_file *f)
+{
+ kmem_cache_free(file_slab, f);
+}
+
static inline void
put_nfs4_file(struct nfs4_file *fi)
{
list_del(&fi->fi_hash);
spin_unlock(&recall_lock);
iput(fi->fi_inode);
- kmem_cache_free(file_slab, fi);
+ nfsd4_free_file(fi);
}
}
#define FILE_HASH_BITS 8
#define FILE_HASH_SIZE (1 << FILE_HASH_BITS)
-struct idr stateids;
-
static unsigned int file_hashval(struct inode *ino)
{
/* XXX: why are we hashing on inode pointer, anyway? */
static inline int get_new_stid(struct nfs4_stid *stid)
{
static int min_stateid = 0;
+ struct idr *stateids = &stid->sc_client->cl_stateids;
int new_stid;
int error;
- if (!idr_pre_get(&stateids, GFP_KERNEL))
- return -ENOMEM;
-
- error = idr_get_new_above(&stateids, stid, min_stateid, &new_stid);
+ error = idr_get_new_above(stateids, stid, min_stateid, &new_stid);
/*
- * All this code is currently serialized; the preallocation
- * above should still be ours:
+ * Note: the necessary preallocation was done in
+ * nfs4_alloc_stateid(). The idr code caps the number of
+ * preallocations that can exist at a time, but the state lock
+ * prevents anyone from using ours before we get here:
*/
BUG_ON(error);
/*
return new_stid;
}
-static inline __be32 init_stid(struct nfs4_stid *stid, struct nfs4_client *cl, unsigned char type)
+static void init_stid(struct nfs4_stid *stid, struct nfs4_client *cl, unsigned char type)
{
stateid_t *s = &stid->sc_stateid;
int new_id;
stid->sc_client = cl;
s->si_opaque.so_clid = cl->cl_clientid;
new_id = get_new_stid(stid);
- if (new_id < 0)
- return nfserr_jukebox;
s->si_opaque.so_id = (u32)new_id;
/* Will be incremented before return to client: */
s->si_generation = 0;
- return 0;
+}
+
+static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab)
+{
+ struct idr *stateids = &cl->cl_stateids;
+
+ if (!idr_pre_get(stateids, GFP_KERNEL))
+ return NULL;
+ /*
+ * Note: if we fail here (or any time between now and the time
+ * we actually get the new idr), we won't need to undo the idr
+ * preallocation, since the idr code caps the number of
+ * preallocated entries.
+ */
+ return kmem_cache_alloc(slab, GFP_KERNEL);
+}
+
+static struct nfs4_ol_stateid * nfs4_alloc_stateid(struct nfs4_client *clp)
+{
+ return openlockstateid(nfs4_alloc_stid(clp, stateid_slab));
}
static struct nfs4_delegation *
{
struct nfs4_delegation *dp;
struct nfs4_file *fp = stp->st_file;
- __be32 status;
dprintk("NFSD alloc_init_deleg\n");
/*
return NULL;
if (num_delegations > max_delegations)
return NULL;
- dp = kmem_cache_alloc(deleg_slab, GFP_KERNEL);
+ dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab));
if (dp == NULL)
return dp;
- status = init_stid(&dp->dl_stid, clp, NFS4_DELEG_STID);
- if (status) {
- kmem_cache_free(deleg_slab, dp);
- return NULL;
- }
+ init_stid(&dp->dl_stid, clp, NFS4_DELEG_STID);
/*
* delegation seqid's are never incremented. The 4.1 special
* meaning of seqid 0 isn't meaningful, really, but let's avoid
static void unhash_stid(struct nfs4_stid *s)
{
- idr_remove(&stateids, s->sc_stateid.si_opaque.so_id);
+ struct idr *stateids = &s->sc_client->cl_stateids;
+
+ idr_remove(stateids, s->sc_stateid.si_opaque.so_id);
}
/* Called under the state lock. */
return;
}
- /*
- * Move client to the end to the LRU list.
- */
dprintk("renewing client (clientid %08x/%08x)\n",
clp->cl_clientid.cl_boot,
clp->cl_clientid.cl_id);
*p++ = i++;
}
-static struct nfs4_stid *find_stateid(stateid_t *t)
+static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t)
{
- return idr_find(&stateids, t->si_opaque.so_id);
+ return idr_find(&cl->cl_stateids, t->si_opaque.so_id);
}
-static struct nfs4_stid *find_stateid_by_type(stateid_t *t, char typemask)
+static struct nfs4_stid *find_stateid_by_type(struct nfs4_client *cl, stateid_t *t, char typemask)
{
struct nfs4_stid *s;
- s = find_stateid(t);
+ s = find_stateid(cl, t);
if (!s)
return NULL;
if (typemask & s->sc_type)
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)
{
}
}
+ idr_init(&clp->cl_stateids);
memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
atomic_set(&clp->cl_refcount, 0);
clp->cl_cb_state = NFSD4_CB_UNKNOWN;
return clp;
}
-static int check_name(struct xdr_netobj name)
-{
- if (name.len == 0)
- return 0;
- if (name.len > NFS4_OPAQUE_LIMIT) {
- dprintk("NFSD: check_name: name too long(%d)!\n", name.len);
- return 0;
- }
- return 1;
-}
-
static void
add_to_unconfirmed(struct nfs4_client *clp, unsigned int strhashval)
{
unsigned int idhashval = clientid_hashval(clid->cl_id);
list_for_each_entry(clp, &conf_id_hashtbl[idhashval], cl_idhash) {
- if (same_clid(&clp->cl_clientid, clid))
+ if (same_clid(&clp->cl_clientid, clid)) {
+ renew_client(clp);
return clp;
+ }
}
return NULL;
}
__func__, rqstp, exid, exid->clname.len, exid->clname.data,
addr_str, exid->flags, exid->spa_how);
- if (!check_name(exid->clname) || (exid->flags & ~EXCHGID4_FLAG_MASK_A))
+ if (exid->flags & ~EXCHGID4_FLAG_MASK_A)
return nfserr_inval;
/* Currently only support SP4_NONE */
nfsd4_get_session(cstate->session);
atomic_inc(&clp->cl_refcount);
- if (clp->cl_cb_state == NFSD4_CB_DOWN)
- seq->status_flags |= SEQ4_STATUS_CB_PATH_DOWN;
+ switch (clp->cl_cb_state) {
+ case NFSD4_CB_DOWN:
+ seq->status_flags = SEQ4_STATUS_CB_PATH_DOWN;
+ break;
+ case NFSD4_CB_FAULT:
+ seq->status_flags = SEQ4_STATUS_BACKCHANNEL_FAULT;
+ break;
+ default:
+ seq->status_flags = 0;
+ }
}
kfree(conn);
spin_unlock(&client_lock);
return status;
}
+static inline bool has_resources(struct nfs4_client *clp)
+{
+ return !list_empty(&clp->cl_openowners)
+ || !list_empty(&clp->cl_delegations)
+ || !list_empty(&clp->cl_sessions);
+}
+
+__be32
+nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
+{
+ struct nfs4_client *conf, *unconf, *clp;
+ int status = 0;
+
+ nfs4_lock_state();
+ unconf = find_unconfirmed_client(&dc->clientid);
+ conf = find_confirmed_client(&dc->clientid);
+
+ if (conf) {
+ clp = conf;
+
+ if (!is_client_expired(conf) && has_resources(conf)) {
+ status = nfserr_clientid_busy;
+ goto out;
+ }
+
+ /* rfc5661 18.50.3 */
+ if (cstate->session && conf == cstate->session->se_client) {
+ status = nfserr_clientid_busy;
+ goto out;
+ }
+ } else if (unconf)
+ clp = unconf;
+ else {
+ status = nfserr_stale_clientid;
+ goto out;
+ }
+
+ expire_client(clp);
+out:
+ nfs4_unlock_state();
+ dprintk("%s return %d\n", __func__, ntohl(status));
+ return status;
+}
+
__be32
nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc)
{
nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_setclientid *setclid)
{
- struct xdr_netobj clname = {
- .len = setclid->se_namelen,
- .data = setclid->se_name,
- };
+ struct xdr_netobj clname = setclid->se_name;
nfs4_verifier clverifier = setclid->se_verf;
unsigned int strhashval;
struct nfs4_client *conf, *unconf, *new;
__be32 status;
char dname[HEXDIR_LEN];
- if (!check_name(clname))
- return nfserr_inval;
-
status = nfs4_make_rec_clidname(dname, &clname);
if (status)
return status;
return status;
}
+static struct nfs4_file *nfsd4_alloc_file(void)
+{
+ return kmem_cache_alloc(file_slab, GFP_KERNEL);
+}
+
/* OPEN Share state helper functions */
-static inline struct nfs4_file *
-alloc_init_file(struct inode *ino)
+static void nfsd4_init_file(struct nfs4_file *fp, struct inode *ino)
{
- struct nfs4_file *fp;
unsigned int hashval = file_hashval(ino);
- fp = kmem_cache_alloc(file_slab, GFP_KERNEL);
- if (fp) {
- atomic_set(&fp->fi_ref, 1);
- INIT_LIST_HEAD(&fp->fi_hash);
- INIT_LIST_HEAD(&fp->fi_stateids);
- INIT_LIST_HEAD(&fp->fi_delegations);
- fp->fi_inode = igrab(ino);
- fp->fi_had_conflict = false;
- fp->fi_lease = NULL;
- memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
- memset(fp->fi_access, 0, sizeof(fp->fi_access));
- spin_lock(&recall_lock);
- list_add(&fp->fi_hash, &file_hashtbl[hashval]);
- spin_unlock(&recall_lock);
- return fp;
- }
- return NULL;
+ atomic_set(&fp->fi_ref, 1);
+ INIT_LIST_HEAD(&fp->fi_hash);
+ INIT_LIST_HEAD(&fp->fi_stateids);
+ INIT_LIST_HEAD(&fp->fi_delegations);
+ fp->fi_inode = igrab(ino);
+ fp->fi_had_conflict = false;
+ fp->fi_lease = NULL;
+ memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
+ memset(fp->fi_access, 0, sizeof(fp->fi_access));
+ spin_lock(&recall_lock);
+ list_add(&fp->fi_hash, &file_hashtbl[hashval]);
+ spin_unlock(&recall_lock);
}
static void
return NULL;
oo->oo_owner.so_is_open_owner = 1;
oo->oo_owner.so_seqid = open->op_seqid;
- oo->oo_flags = 0;
+ oo->oo_flags = NFS4_OO_NEW;
oo->oo_time = 0;
oo->oo_last_closed_stid = NULL;
INIT_LIST_HEAD(&oo->oo_close_lru);
return oo;
}
-static inline __be32 init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
+static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
struct nfs4_openowner *oo = open->op_openowner;
struct nfs4_client *clp = oo->oo_owner.so_client;
- __be32 status;
- status = init_stid(&stp->st_stid, clp, NFS4_OPEN_STID);
- if (status)
- return status;
+ init_stid(&stp->st_stid, clp, NFS4_OPEN_STID);
INIT_LIST_HEAD(&stp->st_lockowners);
list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids);
list_add(&stp->st_perfile, &fp->fi_stateids);
stp->st_file = fp;
stp->st_access_bmap = 0;
stp->st_deny_bmap = 0;
- __set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
- &stp->st_access_bmap);
+ __set_bit(open->op_share_access, &stp->st_access_bmap);
__set_bit(open->op_share_deny, &stp->st_deny_bmap);
stp->st_openstp = NULL;
- return nfs_ok;
}
static void
static struct nfs4_openowner *
find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
{
- struct nfs4_stateowner *so = NULL;
+ struct nfs4_stateowner *so;
+ struct nfs4_openowner *oo;
list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
- if (same_owner_str(so, &open->op_owner, &open->op_clientid))
- return container_of(so, struct nfs4_openowner, oo_owner);
+ if (same_owner_str(so, &open->op_owner, &open->op_clientid)) {
+ oo = openowner(so);
+ renew_client(oo->oo_owner.so_client);
+ return oo;
+ }
}
return NULL;
}
return NULL;
}
-static inline int access_valid(u32 x, u32 minorversion)
-{
- if ((x & NFS4_SHARE_ACCESS_MASK) < NFS4_SHARE_ACCESS_READ)
- return 0;
- if ((x & NFS4_SHARE_ACCESS_MASK) > NFS4_SHARE_ACCESS_BOTH)
- return 0;
- x &= ~NFS4_SHARE_ACCESS_MASK;
- if (minorversion && x) {
- if ((x & NFS4_SHARE_WANT_MASK) > NFS4_SHARE_WANT_CANCEL)
- return 0;
- if ((x & NFS4_SHARE_WHEN_MASK) > NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED)
- return 0;
- x &= ~(NFS4_SHARE_WANT_MASK | NFS4_SHARE_WHEN_MASK);
- }
- if (x)
- return 0;
- return 1;
-}
-
-static inline int deny_valid(u32 x)
-{
- /* Note: unlike access bits, deny bits may be zero. */
- return x <= NFS4_SHARE_DENY_BOTH;
-}
-
/*
* Called to check deny when READ with all zero stateid or
* WRITE with all zero or all one stateid
struct nfs4_openowner *oo = NULL;
__be32 status;
- if (!check_name(open->op_owner))
- return nfserr_inval;
-
if (STALE_CLIENTID(&open->op_clientid))
return nfserr_stale_clientid;
+ /*
+ * In case we need it later, after we've already created the
+ * file and don't want to risk a further failure:
+ */
+ open->op_file = nfsd4_alloc_file();
+ if (open->op_file == NULL)
+ return nfserr_jukebox;
strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner);
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;
+ goto new_owner;
}
if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) {
/* Replace unconfirmed owners without checking for replay. */
clp = oo->oo_owner.so_client;
release_openowner(oo);
open->op_openowner = NULL;
- goto renew;
+ goto new_owner;
}
status = nfsd4_check_seqid(cstate, &oo->oo_owner, open->op_seqid);
if (status)
return status;
-renew:
- if (open->op_openowner == NULL) {
- oo = alloc_init_open_stateowner(strhashval, clp, open);
- if (oo == NULL)
- return nfserr_jukebox;
- open->op_openowner = oo;
- }
- list_del_init(&oo->oo_close_lru);
- renew_client(oo->oo_owner.so_client);
+ clp = oo->oo_owner.so_client;
+ goto alloc_stateid;
+new_owner:
+ oo = alloc_init_open_stateowner(strhashval, clp, open);
+ if (oo == NULL)
+ return nfserr_jukebox;
+ open->op_openowner = oo;
+alloc_stateid:
+ open->op_stp = nfs4_alloc_stateid(clp);
+ if (!open->op_stp)
+ return nfserr_jukebox;
return nfs_ok;
}
return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
}
-static struct nfs4_delegation *find_deleg_stateid(stateid_t *s)
+static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl, stateid_t *s)
{
struct nfs4_stid *ret;
- ret = find_stateid_by_type(s, NFS4_DELEG_STID);
+ ret = find_stateid_by_type(cl, s, NFS4_DELEG_STID);
if (!ret)
return NULL;
return delegstateid(ret);
}
+static bool nfsd4_is_deleg_cur(struct nfsd4_open *open)
+{
+ return open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR ||
+ open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH;
+}
+
static __be32
-nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
+nfs4_check_deleg(struct nfs4_client *cl, struct nfs4_file *fp, struct nfsd4_open *open,
struct nfs4_delegation **dp)
{
int flags;
__be32 status = nfserr_bad_stateid;
- *dp = find_deleg_stateid(&open->op_delegate_stateid);
+ *dp = find_deleg_stateid(cl, &open->op_delegate_stateid);
if (*dp == NULL)
goto out;
flags = share_access_to_flags(open->op_share_access);
if (status)
*dp = NULL;
out:
- if (open->op_claim_type != NFS4_OPEN_CLAIM_DELEGATE_CUR)
+ if (!nfsd4_is_deleg_cur(open))
return nfs_ok;
if (status)
return status;
return nfs_ok;
}
-static inline struct nfs4_ol_stateid *
-nfs4_alloc_stateid(void)
+static void nfs4_free_stateid(struct nfs4_ol_stateid *s)
{
- return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
+ kmem_cache_free(stateid_slab, s);
}
static inline int nfs4_access_to_access(u32 nfs4_access)
int oflag = nfs4_access_to_omode(open->op_share_access);
int access = nfs4_access_to_access(open->op_share_access);
- /* CLAIM_DELEGATE_CUR is used in response to a broken lease;
- * allowing it to break the lease and return EAGAIN leaves the
- * client unable to make progress in returning the delegation */
- if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
- access |= NFSD_MAY_NOT_BREAK_LEASE;
-
if (!fp->fi_fds[oflag]) {
status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
&fp->fi_fds[oflag]);
return nfs_ok;
}
-static __be32
-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_ol_stateid *stp;
- __be32 status;
-
- stp = nfs4_alloc_stateid();
- if (stp == NULL)
- return nfserr_jukebox;
-
- status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
- if (status) {
- kmem_cache_free(stateid_slab, stp);
- return status;
- }
- *stpp = stp;
- return 0;
-}
-
static inline __be32
nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
struct nfsd4_open *open)
static __be32
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;
+ u32 op_share_access = open->op_share_access;
bool new_access;
__be32 status;
nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
{
struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ struct nfs4_client *cl = open->op_openowner->oo_owner.so_client;
struct nfs4_file *fp = NULL;
struct inode *ino = current_fh->fh_dentry->d_inode;
struct nfs4_ol_stateid *stp = NULL;
struct nfs4_delegation *dp = NULL;
__be32 status;
- status = nfserr_inval;
- if (!access_valid(open->op_share_access, resp->cstate.minorversion)
- || !deny_valid(open->op_share_deny))
- goto out;
/*
* Lookup file; if found, lookup stateid and check open request,
* and check for delegations in the process of being recalled.
if (fp) {
if ((status = nfs4_check_open(fp, open, &stp)))
goto out;
- status = nfs4_check_deleg(fp, open, &dp);
+ status = nfs4_check_deleg(cl, fp, open, &dp);
if (status)
goto out;
} else {
status = nfserr_bad_stateid;
- if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
+ if (nfsd4_is_deleg_cur(open))
goto out;
status = nfserr_jukebox;
- fp = alloc_init_file(ino);
- if (fp == NULL)
- goto out;
+ fp = open->op_file;
+ open->op_file = NULL;
+ nfsd4_init_file(fp, ino);
}
/*
if (status)
goto out;
} else {
- status = nfs4_new_open(rqstp, &stp, fp, current_fh, open);
+ status = nfs4_get_vfs_file(rqstp, fp, current_fh, open);
if (status)
goto out;
- status = init_open_stateid(stp, fp, open);
- if (status) {
- release_open_stateid(stp);
- goto out;
- }
+ stp = open->op_stp;
+ open->op_stp = NULL;
+ init_open_stateid(stp, fp, open);
status = nfsd4_truncate(rqstp, current_fh, open);
if (status) {
release_open_stateid(stp);
return status;
}
+void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status)
+{
+ if (open->op_openowner) {
+ struct nfs4_openowner *oo = open->op_openowner;
+
+ if (!list_empty(&oo->oo_owner.so_stateids))
+ list_del_init(&oo->oo_close_lru);
+ if (oo->oo_flags & NFS4_OO_NEW) {
+ if (status) {
+ release_openowner(oo);
+ open->op_openowner = NULL;
+ } else
+ oo->oo_flags &= ~NFS4_OO_NEW;
+ }
+ }
+ if (open->op_file)
+ nfsd4_free_file(open->op_file);
+ if (open->op_stp)
+ nfs4_free_stateid(open->op_stp);
+}
+
__be32
nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
clientid_t *clid)
dprintk("nfsd4_renew: clientid not found!\n");
goto out;
}
- renew_client(clp);
status = nfserr_cb_path_down;
if (!list_empty(&clp->cl_delegations)
&& clp->cl_cb_state != NFSD4_CB_UP)
return nfserr_old_stateid;
}
-__be32 nfs4_validate_stateid(stateid_t *stateid, bool has_session)
+__be32 nfs4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
{
struct nfs4_stid *s;
struct nfs4_ol_stateid *ols;
if (STALE_STATEID(stateid))
return nfserr_stale_stateid;
- s = find_stateid(stateid);
+ s = find_stateid(cl, stateid);
if (!s)
return nfserr_stale_stateid;
- status = check_stateid_generation(stateid, &s->sc_stateid, has_session);
+ status = check_stateid_generation(stateid, &s->sc_stateid, 1);
if (status)
return status;
if (!(s->sc_type & (NFS4_OPEN_STID | NFS4_LOCK_STID)))
return nfs_ok;
}
+static __be32 nfsd4_lookup_stateid(stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s)
+{
+ struct nfs4_client *cl;
+
+ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+ return nfserr_bad_stateid;
+ if (STALE_STATEID(stateid))
+ return nfserr_stale_stateid;
+ cl = find_confirmed_client(&stateid->si_opaque.so_clid);
+ if (!cl)
+ return nfserr_expired;
+ *s = find_stateid_by_type(cl, stateid, typemask);
+ if (!*s)
+ return nfserr_bad_stateid;
+ return nfs_ok;
+
+}
+
/*
* Checks for stateid operations
*/
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
return check_special_stateids(current_fh, stateid, flags);
- status = nfserr_stale_stateid;
- if (STALE_STATEID(stateid))
- goto out;
-
- /*
- * We assume that any stateid that has the current boot time,
- * but that we can't find, is expired:
- */
- status = nfserr_expired;
- s = find_stateid(stateid);
- if (!s)
- goto out;
+ status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID, &s);
+ if (status)
+ return status;
status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));
if (status)
goto out;
status = nfs4_check_delegmode(dp, flags);
if (status)
goto out;
- renew_client(dp->dl_stid.sc_client);
if (filpp) {
*filpp = dp->dl_file->fi_deleg_file;
BUG_ON(!*filpp);
status = nfs4_check_openmode(stp, flags);
if (status)
goto out;
- renew_client(stp->st_stateowner->so_client);
if (filpp) {
if (flags & RD_STATE)
*filpp = find_readable_file(stp->st_file);
nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_test_stateid *test_stateid)
{
- test_stateid->ts_has_session = nfsd4_has_session(cstate);
+ /* real work is done during encoding */
return nfs_ok;
}
{
stateid_t *stateid = &free_stateid->fr_stateid;
struct nfs4_stid *s;
+ struct nfs4_client *cl = cstate->session->se_client;
__be32 ret = nfserr_bad_stateid;
nfs4_lock_state();
- s = find_stateid(stateid);
+ s = find_stateid(cl, stateid);
if (!s)
goto out;
switch (s->sc_type) {
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_ol_stateid **stpp)
{
__be32 status;
+ struct nfs4_stid *s;
dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__,
seqid, STATEID_VAL(stateid));
*stpp = NULL;
- status = nfs4_nospecial_stateid_checks(stateid);
+ status = nfsd4_lookup_stateid(stateid, typemask, &s);
if (status)
return status;
- *stpp = find_ol_stateid_by_type(stateid, typemask);
- if (*stpp == NULL)
- return nfserr_expired;
+ *stpp = openlockstateid(s);
cstate->replay_owner = (*stpp)->st_stateowner;
- renew_client((*stpp)->st_stateowner->so_client);
return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp);
}
return status;
}
-static inline void nfs4_file_downgrade(struct nfs4_ol_stateid *stp, unsigned int to_access)
+static inline void nfs4_stateid_downgrade_bit(struct nfs4_ol_stateid *stp, u32 access)
{
- int i;
+ if (!test_bit(access, &stp->st_access_bmap))
+ return;
+ nfs4_file_put_access(stp->st_file, nfs4_access_to_omode(access));
+ __clear_bit(access, &stp->st_access_bmap);
+}
- for (i = 1; i < 4; i++) {
- if (test_bit(i, &stp->st_access_bmap)
- && ((i & to_access) != i)) {
- nfs4_file_put_access(stp->st_file, nfs4_access_to_omode(i));
- __clear_bit(i, &stp->st_access_bmap);
- }
+static inline void nfs4_stateid_downgrade(struct nfs4_ol_stateid *stp, u32 to_access)
+{
+ switch (to_access) {
+ case NFS4_SHARE_ACCESS_READ:
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_WRITE);
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH);
+ break;
+ case NFS4_SHARE_ACCESS_WRITE:
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_READ);
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH);
+ break;
+ case NFS4_SHARE_ACCESS_BOTH:
+ break;
+ default:
+ BUG();
}
}
(int)cstate->current_fh.fh_dentry->d_name.len,
cstate->current_fh.fh_dentry->d_name.name);
- if (!access_valid(od->od_share_access, cstate->minorversion)
- || !deny_valid(od->od_share_deny))
- return nfserr_inval;
+ /* We don't yet support WANT bits: */
+ od->od_share_access &= NFS4_SHARE_ACCESS_MASK;
nfs4_lock_state();
status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,
stp->st_deny_bmap, od->od_share_deny);
goto out;
}
- nfs4_file_downgrade(stp, od->od_share_access);
+ nfs4_stateid_downgrade(stp, od->od_share_access);
reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
{
struct nfs4_delegation *dp;
stateid_t *stateid = &dr->dr_stateid;
+ struct nfs4_stid *s;
struct inode *inode;
__be32 status;
inode = cstate->current_fh.fh_dentry->d_inode;
nfs4_lock_state();
- status = nfserr_bad_stateid;
- if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
- goto out;
- status = nfserr_stale_stateid;
- if (STALE_STATEID(stateid))
- goto out;
- status = nfserr_expired;
- dp = find_deleg_stateid(stateid);
- if (!dp)
+ status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID, &s);
+ if (status)
goto out;
+ dp = delegstateid(s);
status = check_stateid_generation(stateid, &dp->dl_stid.sc_stateid, nfsd4_has_session(cstate));
if (status)
goto out;
- renew_client(dp->dl_stid.sc_client);
unhash_delegation(dp);
out:
{
struct nfs4_ol_stateid *stp;
struct nfs4_client *clp = lo->lo_owner.so_client;
- __be32 status;
- stp = nfs4_alloc_stateid();
+ stp = nfs4_alloc_stateid(clp);
if (stp == NULL)
return NULL;
- status = init_stid(&stp->st_stid, clp, NFS4_LOCK_STID);
- if (status) {
- free_generic_stateid(stp);
- return NULL;
- }
+ init_stid(&stp->st_stid, clp, NFS4_LOCK_STID);
list_add(&stp->st_perfile, &fp->fi_stateids);
list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);
stp->st_stateowner = &lo->lo_owner;
memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
out:
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
out_nfserr:
for (i = 0; i < OPEN_OWNER_HASH_SIZE; i++) {
INIT_LIST_HEAD(&open_ownerstr_hashtbl[i]);
}
- idr_init(&stateids);
for (i = 0; i < LOCK_HASH_SIZE; i++) {
INIT_LIST_HEAD(&lock_ownerstr_hashtbl[i]);
}
projects / karo-tx-linux.git / blobdiff