- info on the Linux implementation of Sys V mandatory file locking.
ncpfs.txt
- info on Novell Netware(tm) filesystem using NCP protocol.
+nfs41-server.txt
+ - info on the Linux server implementation of NFSv4 minor version 1.
+nfs-rdma.txt
+ - how to install and setup the Linux NFS/RDMA client and server software.
nfsroot.txt
- short guide on setting up a diskless box with NFS root filesystem.
nilfs2.txt
config LOCKD
tristate
+ depends on FILE_LOCKING
config LOCKD_V4
bool
depends on NFSD_V3 || NFS_V3
+ depends on FILE_LOCKING
default y
config EXPORTFS
{
if (call->a_args.lock.oh.data != call->a_owner)
kfree(call->a_args.lock.oh.data);
+
+ locks_release_private(&call->a_args.lock.fl);
}
/*
return kmem_cache_alloc(filelock_cache, GFP_KERNEL);
}
-static void locks_release_private(struct file_lock *fl)
+void locks_release_private(struct file_lock *fl)
{
if (fl->fl_ops) {
if (fl->fl_ops->fl_release_private)
}
}
+EXPORT_SYMBOL_GPL(locks_release_private);
/* Free a lock which is not in use. */
static void locks_free_lock(struct file_lock *fl)
config NFS_FS
tristate "NFS client support"
- depends on INET
+ depends on INET && FILE_LOCKING
select LOCKD
select SUNRPC
select NFS_ACL_SUPPORT if NFS_V3_ACL
if (err)
return err;
/*
- * Just a quick sanity check; we could also try to check
- * whether this pseudoflavor is supported, but at worst
- * an unsupported pseudoflavor on the export would just
- * be a pseudoflavor that won't match the flavor of any
- * authenticated request. The administrator will
- * probably discover the problem when someone fails to
- * authenticate.
+ * XXX: It would be nice to also check whether this
+ * pseudoflavor is supported, so we can discover the
+ * problem at export time instead of when a client fails
+ * to authenticate.
*/
- if (f->pseudoflavor < 0)
- return -EINVAL;
err = get_int(mesg, &f->flags);
if (err)
return err;
err = vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry,
&fhp->fh_post_attr);
+ fhp->fh_post_change = fhp->fh_dentry->d_inode->i_version;
if (err)
fhp->fh_post_saved = 0;
else
}
static int
-encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
+encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp)
{
__be32 *p;
- int len = cb_rec->cbr_fh.fh_size;
+ int len = dp->dl_fh.fh_size;
- RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
+ RESERVE_SPACE(12+sizeof(dp->dl_stateid) + len);
WRITE32(OP_CB_RECALL);
- WRITE32(cb_rec->cbr_stateid.si_generation);
- WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
- WRITE32(cb_rec->cbr_trunc);
+ WRITE32(dp->dl_stateid.si_generation);
+ WRITEMEM(&dp->dl_stateid.si_opaque, sizeof(stateid_opaque_t));
+ WRITE32(0); /* truncate optimization not implemented */
WRITE32(len);
- WRITEMEM(&cb_rec->cbr_fh.fh_base, len);
+ WRITEMEM(&dp->dl_fh.fh_base, len);
return 0;
}
}
static int
-nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_cb_recall *args)
+nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_delegation *args)
{
struct xdr_stream xdr;
struct nfs4_cb_compound_hdr hdr = {
- .ident = args->cbr_ident,
+ .ident = args->dl_ident,
.nops = 1,
};
.pipe_dir_name = "/nfsd4_cb",
};
+static int max_cb_time(void)
+{
+ return max(NFSD_LEASE_TIME/10, (time_t)1) * HZ;
+}
+
/* Reference counting, callback cleanup, etc., all look racy as heck.
* And why is cb_set an atomic? */
-static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
+int setup_callback_client(struct nfs4_client *clp)
{
struct sockaddr_in addr;
- struct nfs4_callback *cb = &clp->cl_callback;
+ struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_timeout timeparms = {
- .to_initval = (NFSD_LEASE_TIME/4) * HZ,
- .to_retries = 5,
- .to_maxval = (NFSD_LEASE_TIME/2) * HZ,
- .to_exponential = 1,
+ .to_initval = max_cb_time(),
+ .to_retries = 0,
};
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
struct rpc_clnt *client;
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
- return ERR_PTR(-EINVAL);
+ return -EINVAL;
/* Initialize address */
memset(&addr, 0, sizeof(addr));
/* Create RPC client */
client = rpc_create(&args);
- if (IS_ERR(client))
+ if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client: %ld\n",
PTR_ERR(client));
- return client;
+ return PTR_ERR(client);
+ }
+ cb->cb_client = client;
+ return 0;
+
+}
+
+static void warn_no_callback_path(struct nfs4_client *clp, int reason)
+{
+ dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
+ (int)clp->cl_name.len, clp->cl_name.data, reason);
+}
+
+static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
+{
+ struct nfs4_client *clp = calldata;
+
+ if (task->tk_status)
+ warn_no_callback_path(clp, task->tk_status);
+ else
+ atomic_set(&clp->cl_cb_conn.cb_set, 1);
+ put_nfs4_client(clp);
+}
+
+static const struct rpc_call_ops nfsd4_cb_probe_ops = {
+ .rpc_call_done = nfsd4_cb_probe_done,
+};
+static struct rpc_cred *lookup_cb_cred(struct nfs4_cb_conn *cb)
+{
+ struct auth_cred acred = {
+ .machine_cred = 1
+ };
+
+ /*
+ * Note in the gss case this doesn't actually have to wait for a
+ * gss upcall (or any calls to the client); this just creates a
+ * non-uptodate cred which the rpc state machine will fill in with
+ * a refresh_upcall later.
+ */
+ return rpcauth_lookup_credcache(cb->cb_client->cl_auth, &acred,
+ RPCAUTH_LOOKUP_NEW);
}
-static int do_probe_callback(void *data)
+void do_probe_callback(struct nfs4_client *clp)
{
- struct nfs4_client *clp = data;
- struct nfs4_callback *cb = &clp->cl_callback;
+ struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
- struct rpc_clnt *client;
+ struct rpc_cred *cred;
int status;
- client = setup_callback_client(clp);
- if (IS_ERR(client)) {
- status = PTR_ERR(client);
- dprintk("NFSD: couldn't create callback client: %d\n",
- status);
- goto out_err;
+ cred = lookup_cb_cred(cb);
+ if (IS_ERR(cred)) {
+ status = PTR_ERR(cred);
+ goto out;
+ }
+ cb->cb_cred = cred;
+ msg.rpc_cred = cb->cb_cred;
+ status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_SOFT,
+ &nfsd4_cb_probe_ops, (void *)clp);
+out:
+ if (status) {
+ warn_no_callback_path(clp, status);
+ put_nfs4_client(clp);
}
-
- status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
-
- if (status)
- goto out_release_client;
-
- cb->cb_client = client;
- atomic_set(&cb->cb_set, 1);
- put_nfs4_client(clp);
- return 0;
-out_release_client:
- rpc_shutdown_client(client);
-out_err:
- dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
- (int)clp->cl_name.len, clp->cl_name.data, status);
- put_nfs4_client(clp);
- return 0;
}
/*
void
nfsd4_probe_callback(struct nfs4_client *clp)
{
- struct task_struct *t;
+ int status;
+
+ BUG_ON(atomic_read(&clp->cl_cb_conn.cb_set));
- BUG_ON(atomic_read(&clp->cl_callback.cb_set));
+ status = setup_callback_client(clp);
+ if (status) {
+ warn_no_callback_path(clp, status);
+ return;
+ }
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
- t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe");
+ do_probe_callback(clp);
+}
- if (IS_ERR(t))
- atomic_dec(&clp->cl_count);
+static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
+{
+ struct nfs4_delegation *dp = calldata;
+ struct nfs4_client *clp = dp->dl_client;
- return;
+ switch (task->tk_status) {
+ case -EIO:
+ /* Network partition? */
+ atomic_set(&clp->cl_cb_conn.cb_set, 0);
+ warn_no_callback_path(clp, task->tk_status);
+ case -EBADHANDLE:
+ case -NFS4ERR_BAD_STATEID:
+ /* Race: client probably got cb_recall
+ * before open reply granting delegation */
+ break;
+ default:
+ /* success, or error we can't handle */
+ return;
+ }
+ if (dp->dl_retries--) {
+ rpc_delay(task, 2*HZ);
+ task->tk_status = 0;
+ rpc_restart_call(task);
+ } else {
+ atomic_set(&clp->cl_cb_conn.cb_set, 0);
+ warn_no_callback_path(clp, task->tk_status);
+ }
}
+static void nfsd4_cb_recall_release(void *calldata)
+{
+ struct nfs4_delegation *dp = calldata;
+ struct nfs4_client *clp = dp->dl_client;
+
+ nfs4_put_delegation(dp);
+ put_nfs4_client(clp);
+}
+
+static const struct rpc_call_ops nfsd4_cb_recall_ops = {
+ .rpc_call_done = nfsd4_cb_recall_done,
+ .rpc_release = nfsd4_cb_recall_release,
+};
+
/*
* called with dp->dl_count inc'ed.
*/
nfsd4_cb_recall(struct nfs4_delegation *dp)
{
struct nfs4_client *clp = dp->dl_client;
- struct rpc_clnt *clnt = clp->cl_callback.cb_client;
- struct nfs4_cb_recall *cbr = &dp->dl_recall;
+ struct rpc_clnt *clnt = clp->cl_cb_conn.cb_client;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
- .rpc_argp = cbr,
+ .rpc_argp = dp,
+ .rpc_cred = clp->cl_cb_conn.cb_cred
};
- int retries = 1;
- int status = 0;
-
- cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */
- cbr->cbr_dp = dp;
-
- status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
- while (retries--) {
- switch (status) {
- case -EIO:
- /* Network partition? */
- atomic_set(&clp->cl_callback.cb_set, 0);
- case -EBADHANDLE:
- case -NFS4ERR_BAD_STATEID:
- /* Race: client probably got cb_recall
- * before open reply granting delegation */
- break;
- default:
- goto out_put_cred;
- }
- ssleep(2);
- status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
+ int status;
+
+ dp->dl_retries = 1;
+ status = rpc_call_async(clnt, &msg, RPC_TASK_SOFT,
+ &nfsd4_cb_recall_ops, dp);
+ if (status) {
+ put_nfs4_client(clp);
+ nfs4_put_delegation(dp);
}
-out_put_cred:
- /*
- * Success or failure, now we're either waiting for lease expiration
- * or deleg_return.
- */
- put_nfs4_client(clp);
- nfs4_put_delegation(dp);
- return;
}
#define NFSDDBG_FACILITY NFSDDBG_PROC
+static u32 nfsd_attrmask[] = {
+ NFSD_WRITEABLE_ATTRS_WORD0,
+ NFSD_WRITEABLE_ATTRS_WORD1,
+ NFSD_WRITEABLE_ATTRS_WORD2
+};
+
+static u32 nfsd41_ex_attrmask[] = {
+ NFSD_SUPPATTR_EXCLCREAT_WORD0,
+ NFSD_SUPPATTR_EXCLCREAT_WORD1,
+ NFSD_SUPPATTR_EXCLCREAT_WORD2
+};
+
+static __be32
+check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ u32 *bmval, u32 *writable)
+{
+ struct dentry *dentry = cstate->current_fh.fh_dentry;
+ struct svc_export *exp = cstate->current_fh.fh_export;
+
+ /*
+ * Check about attributes are supported by the NFSv4 server or not.
+ * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
+ */
+ if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
+ (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
+ (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
+ return nfserr_attrnotsupp;
+
+ /*
+ * Check FATTR4_WORD0_ACL & FATTR4_WORD0_FS_LOCATIONS can be supported
+ * in current environment or not.
+ */
+ if (bmval[0] & FATTR4_WORD0_ACL) {
+ if (!IS_POSIXACL(dentry->d_inode))
+ return nfserr_attrnotsupp;
+ }
+ if (bmval[0] & FATTR4_WORD0_FS_LOCATIONS) {
+ if (exp->ex_fslocs.locations == NULL)
+ return nfserr_attrnotsupp;
+ }
+
+ /*
+ * According to spec, read-only attributes return ERR_INVAL.
+ */
+ if (writable) {
+ if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
+ (bmval[2] & ~writable[2]))
+ return nfserr_inval;
+ }
+
+ return nfs_ok;
+}
+
+static __be32
+nfsd4_check_open_attributes(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
+{
+ __be32 status = nfs_ok;
+
+ if (open->op_create == NFS4_OPEN_CREATE) {
+ if (open->op_createmode == NFS4_CREATE_UNCHECKED
+ || open->op_createmode == NFS4_CREATE_GUARDED)
+ status = check_attr_support(rqstp, cstate,
+ open->op_bmval, nfsd_attrmask);
+ else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
+ status = check_attr_support(rqstp, cstate,
+ open->op_bmval, nfsd41_ex_attrmask);
+ }
+
+ return status;
+}
+
static inline void
fh_dup2(struct svc_fh *dst, struct svc_fh *src)
{
if (status)
goto out;
+ status = nfsd4_check_open_attributes(rqstp, cstate, open);
+ if (status)
+ goto out;
+
/* Openowner is now set, so sequence id will get bumped. Now we need
* these checks before we do any creates: */
status = nfserr_grace;
if (status)
return status;
+ status = check_attr_support(rqstp, cstate, create->cr_bmval,
+ nfsd_attrmask);
+ if (status)
+ return status;
+
switch (create->cr_type) {
case NF4LNK:
/* ugh! we have to null-terminate the linktext, or
if (status)
return status;
status = nfs_ok;
+
+ status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
+ nfsd_attrmask);
+ if (status)
+ goto out;
+
if (setattr->sa_acl != NULL)
status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
setattr->sa_acl);
if (status)
return status;
- if ((verify->ve_bmval[0] & ~nfsd_suppattrs0(cstate->minorversion))
- || (verify->ve_bmval[1] & ~nfsd_suppattrs1(cstate->minorversion))
- || (verify->ve_bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
- return nfserr_attrnotsupp;
+ status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
+ if (status)
+ return status;
+
if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
|| (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
return nfserr_inval;
return "unknown_operation";
}
-#define nfs4svc_decode_voidargs NULL
-#define nfs4svc_release_void NULL
#define nfsd4_voidres nfsd4_voidargs
-#define nfs4svc_release_compound NULL
struct nfsd4_voidargs { int dummy; };
-#define PROC(name, argt, rest, relt, cache, respsize) \
- { (svc_procfunc) nfsd4_proc_##name, \
- (kxdrproc_t) nfs4svc_decode_##argt##args, \
- (kxdrproc_t) nfs4svc_encode_##rest##res, \
- (kxdrproc_t) nfs4svc_release_##relt, \
- sizeof(struct nfsd4_##argt##args), \
- sizeof(struct nfsd4_##rest##res), \
- 0, \
- cache, \
- respsize, \
- }
-
/*
* TODO: At the present time, the NFSv4 server does not do XID caching
* of requests. Implementing XID caching would not be a serious problem,
* better XID's.
*/
static struct svc_procedure nfsd_procedures4[2] = {
- PROC(null, void, void, void, RC_NOCACHE, 1),
- PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4)
+ [NFSPROC4_NULL] = {
+ .pc_func = (svc_procfunc) nfsd4_proc_null,
+ .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
+ .pc_argsize = sizeof(struct nfsd4_voidargs),
+ .pc_ressize = sizeof(struct nfsd4_voidres),
+ .pc_cachetype = RC_NOCACHE,
+ .pc_xdrressize = 1,
+ },
+ [NFSPROC4_COMPOUND] = {
+ .pc_func = (svc_procfunc) nfsd4_proc_compound,
+ .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
+ .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
+ .pc_argsize = sizeof(struct nfsd4_compoundargs),
+ .pc_ressize = sizeof(struct nfsd4_compoundres),
+ .pc_cachetype = RC_NOCACHE,
+ .pc_xdrressize = NFSD_BUFSIZE/4,
+ },
};
struct svc_version nfsd_version4 = {
{
struct nfs4_delegation *dp;
struct nfs4_file *fp = stp->st_file;
- struct nfs4_callback *cb = &stp->st_stateowner->so_client->cl_callback;
+ struct nfs4_cb_conn *cb = &stp->st_stateowner->so_client->cl_cb_conn;
dprintk("NFSD alloc_init_deleg\n");
if (fp->fi_had_conflict)
get_file(stp->st_vfs_file);
dp->dl_vfs_file = stp->st_vfs_file;
dp->dl_type = type;
- dp->dl_recall.cbr_dp = NULL;
- dp->dl_recall.cbr_ident = cb->cb_ident;
- dp->dl_recall.cbr_trunc = 0;
- dp->dl_stateid.si_boot = boot_time;
+ dp->dl_ident = cb->cb_ident;
+ dp->dl_stateid.si_boot = get_seconds();
dp->dl_stateid.si_stateownerid = current_delegid++;
dp->dl_stateid.si_fileid = 0;
dp->dl_stateid.si_generation = 0;
static void
shutdown_callback_client(struct nfs4_client *clp)
{
- struct rpc_clnt *clnt = clp->cl_callback.cb_client;
+ struct rpc_clnt *clnt = clp->cl_cb_conn.cb_client;
if (clnt) {
/*
* Callback threads take a reference on the client, so there
* should be no outstanding callbacks at this point.
*/
- clp->cl_callback.cb_client = NULL;
+ 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
return NULL;
memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
atomic_set(&clp->cl_count, 1);
- atomic_set(&clp->cl_callback.cb_set, 0);
+ 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);
static void
gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se)
{
- struct nfs4_callback *cb = &clp->cl_callback;
+ struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
/* Currently, we only support tcp for the callback channel */
if ((se->se_callback_netid_len != 3) || memcmp((char *)se->se_callback_netid_val, "tcp", 3))
else {
/* XXX: We just turn off callbacks until we can handle
* change request correctly. */
- atomic_set(&conf->cl_callback.cb_set, 0);
- gen_confirm(conf);
- nfsd4_remove_clid_dir(unconf);
+ atomic_set(&conf->cl_cb_conn.cb_set, 0);
expire_client(unconf);
status = nfs_ok;
stp->st_stateowner = sop;
get_nfs4_file(fp);
stp->st_file = fp;
- stp->st_stateid.si_boot = boot_time;
+ stp->st_stateid.si_boot = get_seconds();
stp->st_stateid.si_stateownerid = sop->so_id;
stp->st_stateid.si_fileid = fp->fi_id;
stp->st_stateid.si_generation = 0;
}
}
-/*
- * Recall a delegation
- */
-static int
-do_recall(void *__dp)
-{
- struct nfs4_delegation *dp = __dp;
-
- dp->dl_file->fi_had_conflict = true;
- nfsd4_cb_recall(dp);
- return 0;
-}
-
/*
* Spawn a thread to perform a recall on the delegation represented
* by the lease (file_lock)
static
void nfsd_break_deleg_cb(struct file_lock *fl)
{
- struct nfs4_delegation *dp= (struct nfs4_delegation *)fl->fl_owner;
- struct task_struct *t;
+ struct nfs4_delegation *dp = (struct nfs4_delegation *)fl->fl_owner;
dprintk("NFSD nfsd_break_deleg_cb: dp %p fl %p\n",dp,fl);
if (!dp)
*/
fl->fl_break_time = 0;
- t = kthread_run(do_recall, dp, "%s", "nfs4_cb_recall");
- if (IS_ERR(t)) {
- struct nfs4_client *clp = dp->dl_client;
-
- printk(KERN_INFO "NFSD: Callback thread failed for "
- "for client (clientid %08x/%08x)\n",
- clp->cl_clientid.cl_boot, clp->cl_clientid.cl_id);
- put_nfs4_client(dp->dl_client);
- nfs4_put_delegation(dp);
- }
+ dp->dl_file->fi_had_conflict = true;
+ nfsd4_cb_recall(dp);
}
/*
{
struct nfs4_delegation *dp;
struct nfs4_stateowner *sop = stp->st_stateowner;
- struct nfs4_callback *cb = &sop->so_client->cl_callback;
+ struct nfs4_cb_conn *cb = &sop->so_client->cl_cb_conn;
struct file_lock fl, *flp = &fl;
int status, flag = 0;
renew_client(clp);
status = nfserr_cb_path_down;
if (!list_empty(&clp->cl_delegations)
- && !atomic_read(&clp->cl_callback.cb_set))
+ && !atomic_read(&clp->cl_cb_conn.cb_set))
goto out;
status = nfs_ok;
out:
static int
STALE_STATEID(stateid_t *stateid)
{
- if (stateid->si_boot == boot_time)
- return 0;
- dprintk("NFSD: stale stateid (%08x/%08x/%08x/%08x)!\n",
- stateid->si_boot, stateid->si_stateownerid, stateid->si_fileid,
- stateid->si_generation);
- return 1;
+ 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);
+ return 1;
+ }
+ return 0;
+}
+
+static int
+EXPIRED_STATEID(stateid_t *stateid)
+{
+ 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);
+ return 1;
+ }
+ return 0;
+}
+
+static __be32
+stateid_error_map(stateid_t *stateid)
+{
+ if (STALE_STATEID(stateid))
+ return nfserr_stale_stateid;
+ 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);
+ return nfserr_bad_stateid;
}
static inline int
status = nfserr_bad_stateid;
if (is_delegation_stateid(stateid)) {
dp = find_delegation_stateid(ino, stateid);
- if (!dp)
+ if (!dp) {
+ status = stateid_error_map(stateid);
goto out;
+ }
status = check_stateid_generation(stateid, &dp->dl_stateid,
flags);
if (status)
*filpp = dp->dl_vfs_file;
} else { /* open or lock stateid */
stp = find_stateid(stateid, flags);
- if (!stp)
+ if (!stp) {
+ status = stateid_error_map(stateid);
goto out;
+ }
if (nfs4_check_fh(current_fh, stp))
goto out;
if (!stp->st_stateowner->so_confirmed)
*/
sop = search_close_lru(stateid->si_stateownerid, flags);
if (sop == NULL)
- return nfserr_bad_stateid;
+ return stateid_error_map(stateid);
*sopp = sop;
goto check_replay;
}
if (!is_delegation_stateid(stateid))
goto out;
dp = find_delegation_stateid(inode, stateid);
- if (!dp)
+ if (!dp) {
+ status = stateid_error_map(stateid);
goto out;
+ }
status = check_stateid_generation(stateid, &dp->dl_stateid, flags);
if (status)
goto out;
stp->st_stateowner = sop;
get_nfs4_file(fp);
stp->st_file = fp;
- stp->st_stateid.si_boot = boot_time;
+ stp->st_stateid.si_boot = get_seconds();
stp->st_stateid.si_stateownerid = sop->so_id;
stp->st_stateid.si_fileid = fp->fi_id;
stp->st_stateid.si_generation = 0;
INIT_LIST_HEAD(&conf_str_hashtbl[i]);
INIT_LIST_HEAD(&unconf_str_hashtbl[i]);
INIT_LIST_HEAD(&unconf_id_hashtbl[i]);
+ INIT_LIST_HEAD(&reclaim_str_hashtbl[i]);
}
for (i = 0; i < SESSION_HASH_SIZE; i++)
INIT_LIST_HEAD(&sessionid_hashtbl[i]);
INIT_LIST_HEAD(&close_lru);
INIT_LIST_HEAD(&client_lru);
INIT_LIST_HEAD(&del_recall_lru);
- for (i = 0; i < CLIENT_HASH_SIZE; i++)
- INIT_LIST_HEAD(&reclaim_str_hashtbl[i]);
reclaim_str_hashtbl_size = 0;
return 0;
}
return 0;
}
-/*
- * START OF "GENERIC" DECODE ROUTINES.
- * These may look a little ugly since they are imported from a "generic"
- * set of XDR encode/decode routines which are intended to be shared by
- * all of our NFSv4 implementations (OpenBSD, MacOS X...).
- *
- * If the pain of reading these is too great, it should be a straightforward
- * task to translate them into Linux-specific versions which are more
- * consistent with the style used in NFSv2/v3...
- */
#define DECODE_HEAD \
__be32 *p; \
__be32 status
DECODE_TAIL;
}
-static u32 nfsd_attrmask[] = {
- NFSD_WRITEABLE_ATTRS_WORD0,
- NFSD_WRITEABLE_ATTRS_WORD1,
- NFSD_WRITEABLE_ATTRS_WORD2
-};
-
-static u32 nfsd41_ex_attrmask[] = {
- NFSD_SUPPATTR_EXCLCREAT_WORD0,
- NFSD_SUPPATTR_EXCLCREAT_WORD1,
- NFSD_SUPPATTR_EXCLCREAT_WORD2
-};
-
static __be32
-nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
+nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
struct iattr *iattr, struct nfs4_acl **acl)
{
int expected_len, len = 0;
if ((status = nfsd4_decode_bitmap(argp, bmval)))
return status;
- /*
- * According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
- * read-only attributes return ERR_INVAL.
- */
- if ((bmval[0] & ~nfsd_suppattrs0(argp->minorversion)) ||
- (bmval[1] & ~nfsd_suppattrs1(argp->minorversion)) ||
- (bmval[2] & ~nfsd_suppattrs2(argp->minorversion)))
- return nfserr_attrnotsupp;
- if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
- (bmval[2] & ~writable[2]))
- return nfserr_inval;
-
READ_BUF(4);
READ32(expected_len);
goto xdr_error;
}
}
- BUG_ON(bmval[2]); /* no such writeable attr supported yet */
- if (len != expected_len)
+ if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0
+ || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1
+ || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2)
+ READ_BUF(expected_len - len);
+ else if (len != expected_len)
goto xdr_error;
DECODE_TAIL;
if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
return status;
- status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask,
- &create->cr_iattr, &create->cr_acl);
+ status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr,
+ &create->cr_acl);
if (status)
goto out;
case NFS4_CREATE_UNCHECKED:
case NFS4_CREATE_GUARDED:
status = nfsd4_decode_fattr(argp, open->op_bmval,
- nfsd_attrmask, &open->op_iattr, &open->op_acl);
+ &open->op_iattr, &open->op_acl);
if (status)
goto out;
break;
READ_BUF(8);
COPYMEM(open->op_verf.data, 8);
status = nfsd4_decode_fattr(argp, open->op_bmval,
- nfsd41_ex_attrmask, &open->op_iattr,
- &open->op_acl);
+ &open->op_iattr, &open->op_acl);
if (status)
goto out;
break;
status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
if (status)
return status;
- return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask,
- &setattr->sa_iattr, &setattr->sa_acl);
+ return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr,
+ &setattr->sa_acl);
}
static __be32
};
static nfsd4_dec nfsd41_dec_ops[] = {
- [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access,
- [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close,
- [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit,
- [OP_CREATE] (nfsd4_dec)nfsd4_decode_create,
- [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn,
- [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr,
- [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop,
- [OP_LINK] (nfsd4_dec)nfsd4_decode_link,
- [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock,
- [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt,
- [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku,
- [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup,
- [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop,
- [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify,
- [OP_OPEN] (nfsd4_dec)nfsd4_decode_open,
- [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade,
- [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh,
- [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop,
- [OP_READ] (nfsd4_dec)nfsd4_decode_read,
- [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir,
- [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop,
- [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove,
- [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename,
- [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop,
- [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop,
- [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo,
- [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr,
- [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp,
- [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify,
- [OP_WRITE] (nfsd4_dec)nfsd4_decode_write,
- [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
+ [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
+ [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
+ [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
+ [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
+ [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
+ [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
+ [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
+ [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
+ [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
+ [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
+ [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
+ [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
+ [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
+ [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
+ [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
+ [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
+ [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
+ [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
+ [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
+ [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
+ [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
+ [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
+ [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp,
/* new operations for NFSv4.1 */
- [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp,
- [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id,
- [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session,
- [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session,
- [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence,
- [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id,
+ [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session,
+ [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session,
+ [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence,
+ [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_notsupp,
};
struct nfsd4_minorversion_ops {
DECODE_TAIL;
}
-/*
- * END OF "GENERIC" DECODE ROUTINES.
- */
-
-/*
- * START OF "GENERIC" ENCODE ROUTINES.
- * These may look a little ugly since they are imported from a "generic"
- * set of XDR encode/decode routines which are intended to be shared by
- * all of our NFSv4 implementations (OpenBSD, MacOS X...).
- *
- * If the pain of reading these is too great, it should be a straightforward
- * task to translate them into Linux-specific versions which are more
- * consistent with the style used in NFSv2/v3...
- */
-#define ENCODE_HEAD __be32 *p
#define WRITE32(n) *p++ = htonl(n)
#define WRITE64(n) do { \
memcpy(p, ptr, nbytes); \
p += XDR_QUADLEN(nbytes); \
}} while (0)
-#define WRITECINFO(c) do { \
- *p++ = htonl(c.atomic); \
- *p++ = htonl(c.before_ctime_sec); \
- *p++ = htonl(c.before_ctime_nsec); \
- *p++ = htonl(c.after_ctime_sec); \
- *p++ = htonl(c.after_ctime_nsec); \
-} while (0)
+
+static void write32(__be32 **p, u32 n)
+{
+ *(*p)++ = n;
+}
+
+static void write64(__be32 **p, u64 n)
+{
+ write32(p, (u32)(n >> 32));
+ write32(p, (u32)n);
+}
+
+static void write_change(__be32 **p, struct kstat *stat, struct inode *inode)
+{
+ if (IS_I_VERSION(inode)) {
+ write64(p, inode->i_version);
+ } else {
+ write32(p, stat->ctime.tv_sec);
+ write32(p, stat->ctime.tv_nsec);
+ }
+}
+
+static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
+{
+ write32(p, c->atomic);
+ if (c->change_supported) {
+ write64(p, c->before_change);
+ write64(p, c->after_change);
+ } else {
+ write32(p, c->before_ctime_sec);
+ write32(p, c->before_ctime_nsec);
+ write32(p, c->after_ctime_sec);
+ write32(p, c->after_ctime_nsec);
+ }
+}
#define RESERVE_SPACE(nbytes) do { \
p = resp->p; \
WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
}
if (bmval0 & FATTR4_WORD0_CHANGE) {
- /*
- * Note: This _must_ be consistent with the scheme for writing
- * change_info, so any changes made here must be reflected there
- * as well. (See xdr4.h:set_change_info() and the WRITECINFO()
- * macro above.)
- */
if ((buflen -= 8) < 0)
goto out_resource;
- WRITE32(stat.ctime.tv_sec);
- WRITE32(stat.ctime.tv_nsec);
+ write_change(&p, &stat, dentry->d_inode);
}
if (bmval0 & FATTR4_WORD0_SIZE) {
if ((buflen -= 8) < 0)
static void
nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(sizeof(stateid_t));
WRITE32(sid->si_generation);
static __be32
nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8);
static __be32
nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8);
static __be32
nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(32);
- WRITECINFO(create->cr_cinfo);
+ write_cinfo(&p, &create->cr_cinfo);
WRITE32(2);
WRITE32(create->cr_bmval[0]);
WRITE32(create->cr_bmval[1]);
{
struct svc_fh *fhp = *fhpp;
unsigned int len;
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
len = fhp->fh_handle.fh_size;
static void
nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
WRITE64(ld->ld_start);
static __be32
nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(20);
- WRITECINFO(link->li_cinfo);
+ write_cinfo(&p, &link->li_cinfo);
ADJUST_ARGS();
}
return nfserr;
static __be32
nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
{
- ENCODE_HEAD;
+ __be32 *p;
ENCODE_SEQID_OP_HEAD;
if (nfserr)
nfsd4_encode_stateid(resp, &open->op_stateid);
RESERVE_SPACE(40);
- WRITECINFO(open->op_cinfo);
+ write_cinfo(&p, &open->op_cinfo);
WRITE32(open->op_rflags);
WRITE32(2);
WRITE32(open->op_bmval[0]);
int v, pn;
unsigned long maxcount;
long len;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
{
int maxcount;
char *page;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
int maxcount;
loff_t offset;
__be32 *page, *savep, *tailbase;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
static __be32
nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(20);
- WRITECINFO(remove->rm_cinfo);
+ write_cinfo(&p, &remove->rm_cinfo);
ADJUST_ARGS();
}
return nfserr;
static __be32
nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(40);
- WRITECINFO(rename->rn_sinfo);
- WRITECINFO(rename->rn_tinfo);
+ write_cinfo(&p, &rename->rn_sinfo);
+ write_cinfo(&p, &rename->rn_tinfo);
ADJUST_ARGS();
}
return nfserr;
u32 nflavs;
struct exp_flavor_info *flavs;
struct exp_flavor_info def_flavs[2];
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
goto out;
static __be32
nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(12);
if (nfserr) {
static __be32
nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8 + sizeof(nfs4_verifier));
static __be32
nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(16);
nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_exchange_id *exid)
{
- ENCODE_HEAD;
+ __be32 *p;
char *major_id;
char *server_scope;
int major_id_sz;
nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_create_session *sess)
{
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_sequence *seq)
{
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
__be32 *statp;
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(8);
WRITE32(op->opnum);
void
nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
- ENCODE_HEAD;
+ __be32 *p;
struct nfs4_replay *rp = op->replay;
BUG_ON(!rp);
ADJUST_ARGS();
}
-/*
- * END OF "GENERIC" ENCODE ROUTINES.
- */
-
int
nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
*/
#define CACHESIZE 1024
#define HASHSIZE 64
-#define REQHASH(xid) (((((__force __u32)xid) >> 24) ^ ((__force __u32)xid)) & (HASHSIZE-1))
-static struct hlist_head * hash_list;
+static struct hlist_head * cache_hash;
static struct list_head lru_head;
static int cache_disabled = 1;
+/*
+ * Calculate the hash index from an XID.
+ */
+static inline u32 request_hash(u32 xid)
+{
+ u32 h = xid;
+ h ^= (xid >> 24);
+ return h & (HASHSIZE-1);
+}
+
static int nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *vec);
-/*
+/*
* locking for the reply cache:
* A cache entry is "single use" if c_state == RC_INPROG
* Otherwise, it when accessing _prev or _next, the lock must be held.
i--;
}
- hash_list = kcalloc (HASHSIZE, sizeof(struct hlist_head), GFP_KERNEL);
- if (!hash_list)
+ cache_hash = kcalloc (HASHSIZE, sizeof(struct hlist_head), GFP_KERNEL);
+ if (!cache_hash)
goto out_nomem;
cache_disabled = 0;
cache_disabled = 1;
- kfree (hash_list);
- hash_list = NULL;
+ kfree (cache_hash);
+ cache_hash = NULL;
}
/*
hash_refile(struct svc_cacherep *rp)
{
hlist_del_init(&rp->c_hash);
- hlist_add_head(&rp->c_hash, hash_list + REQHASH(rp->c_xid));
+ hlist_add_head(&rp->c_hash, cache_hash + request_hash(rp->c_xid));
}
/*
spin_lock(&cache_lock);
rtn = RC_DOIT;
- rh = &hash_list[REQHASH(xid)];
+ rh = &cache_hash[request_hash(xid)];
hlist_for_each_entry(rp, hn, rh, c_hash) {
if (rp->c_state != RC_UNUSED &&
xid == rp->c_xid && proc == rp->c_proc &&
}
}
- /* This should not happen */
- if (rp == NULL) {
+ /* All entries on the LRU are in-progress. This should not happen */
+ if (&rp->c_lru == &lru_head) {
static int complaints;
printk(KERN_WARNING "nfsd: all repcache entries locked!\n");
len = resv->iov_len - ((char*)statp - (char*)resv->iov_base);
len >>= 2;
-
+
/* Don't cache excessive amounts of data and XDR failures */
if (!statp || len > (256 >> 2)) {
rp->c_state = RC_UNUSED;
if (rv)
return rv;
}
- sprintf(buf, "%d\n", nfsd_nrthreads());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
+ nfsd_nrthreads());
}
/**
{
char *mesg = buf;
char *vers, *minorp, sign;
- int len, num;
+ int len, num, remaining;
unsigned minor;
ssize_t tlen = 0;
char *sep;
}
next:
vers += len + 1;
- tlen += len;
} while ((len = qword_get(&mesg, vers, size)) > 0);
/* If all get turned off, turn them back on, as
* having no versions is BAD
*/
nfsd_reset_versions();
}
+
/* Now write current state into reply buffer */
len = 0;
sep = "";
+ remaining = SIMPLE_TRANSACTION_LIMIT;
for (num=2 ; num <= 4 ; num++)
if (nfsd_vers(num, NFSD_AVAIL)) {
- len += sprintf(buf+len, "%s%c%d", sep,
+ len = snprintf(buf, remaining, "%s%c%d", sep,
nfsd_vers(num, NFSD_TEST)?'+':'-',
num);
sep = " ";
+
+ if (len > remaining)
+ break;
+ remaining -= len;
+ buf += len;
+ tlen += len;
}
if (nfsd_vers(4, NFSD_AVAIL))
- for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; minor++)
- len += sprintf(buf+len, " %c4.%u",
+ for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
+ minor++) {
+ len = snprintf(buf, remaining, " %c4.%u",
(nfsd_vers(4, NFSD_TEST) &&
nfsd_minorversion(minor, NFSD_TEST)) ?
'+' : '-',
minor);
- len += sprintf(buf+len, "\n");
- return len;
+
+ if (len > remaining)
+ break;
+ remaining -= len;
+ buf += len;
+ tlen += len;
+ }
+
+ len = snprintf(buf, remaining, "\n");
+ if (len > remaining)
+ return -EINVAL;
+ return tlen + len;
}
/**
return rv;
}
-static ssize_t __write_ports(struct file *file, char *buf, size_t size)
+/*
+ * Zero-length write. Return a list of NFSD's current listener
+ * transports.
+ */
+static ssize_t __write_ports_names(char *buf)
{
- if (size == 0) {
- int len = 0;
+ if (nfsd_serv == NULL)
+ return 0;
+ return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
+}
- if (nfsd_serv)
- len = svc_xprt_names(nfsd_serv, buf, 0);
- return len;
- }
- /* Either a single 'fd' number is written, in which
- * case it must be for a socket of a supported family/protocol,
- * and we use it as an nfsd socket, or
- * A '-' followed by the 'name' of a socket in which case
- * we close the socket.
- */
- if (isdigit(buf[0])) {
- char *mesg = buf;
- int fd;
- int err;
- err = get_int(&mesg, &fd);
- if (err)
- return -EINVAL;
- if (fd < 0)
- return -EINVAL;
- err = nfsd_create_serv();
- if (!err) {
- err = svc_addsock(nfsd_serv, fd, buf);
- if (err >= 0) {
- err = lockd_up();
- if (err < 0)
- svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf);
- }
- /* Decrease the count, but don't shutdown the
- * the service
- */
- nfsd_serv->sv_nrthreads--;
- }
- return err < 0 ? err : 0;
- }
- if (buf[0] == '-' && isdigit(buf[1])) {
- char *toclose = kstrdup(buf+1, GFP_KERNEL);
- int len = 0;
- if (!toclose)
- return -ENOMEM;
- if (nfsd_serv)
- len = svc_sock_names(buf, nfsd_serv, toclose);
- if (len >= 0)
- lockd_down();
- kfree(toclose);
- return len;
- }
- /*
- * Add a transport listener by writing it's transport name
- */
- if (isalpha(buf[0])) {
- int err;
- char transport[16];
- int port;
- if (sscanf(buf, "%15s %4d", transport, &port) == 2) {
- if (port < 1 || port > 65535)
- return -EINVAL;
- err = nfsd_create_serv();
- if (!err) {
- err = svc_create_xprt(nfsd_serv,
- transport, PF_INET, port,
- SVC_SOCK_ANONYMOUS);
- if (err == -ENOENT)
- /* Give a reasonable perror msg for
- * bad transport string */
- err = -EPROTONOSUPPORT;
- }
- return err < 0 ? err : 0;
- }
- }
- /*
- * Remove a transport by writing it's transport name and port number
- */
- if (buf[0] == '-' && isalpha(buf[1])) {
- struct svc_xprt *xprt;
- int err = -EINVAL;
- char transport[16];
- int port;
- if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) {
- if (port < 1 || port > 65535)
- return -EINVAL;
- if (nfsd_serv) {
- xprt = svc_find_xprt(nfsd_serv, transport,
- AF_UNSPEC, port);
- if (xprt) {
- svc_close_xprt(xprt);
- svc_xprt_put(xprt);
- err = 0;
- } else
- err = -ENOTCONN;
- }
- return err < 0 ? err : 0;
- }
+/*
+ * A single 'fd' number was written, in which case it must be for
+ * a socket of a supported family/protocol, and we use it as an
+ * nfsd listener.
+ */
+static ssize_t __write_ports_addfd(char *buf)
+{
+ char *mesg = buf;
+ int fd, err;
+
+ err = get_int(&mesg, &fd);
+ if (err != 0 || fd < 0)
+ return -EINVAL;
+
+ err = nfsd_create_serv();
+ if (err != 0)
+ return err;
+
+ err = lockd_up();
+ if (err != 0)
+ goto out;
+
+ err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
+ if (err < 0)
+ lockd_down();
+
+out:
+ /* Decrease the count, but don't shut down the service */
+ nfsd_serv->sv_nrthreads--;
+ return err;
+}
+
+/*
+ * A '-' followed by the 'name' of a socket means we close the socket.
+ */
+static ssize_t __write_ports_delfd(char *buf)
+{
+ char *toclose;
+ int len = 0;
+
+ toclose = kstrdup(buf + 1, GFP_KERNEL);
+ if (toclose == NULL)
+ return -ENOMEM;
+
+ if (nfsd_serv != NULL)
+ len = svc_sock_names(nfsd_serv, buf,
+ SIMPLE_TRANSACTION_LIMIT, toclose);
+ if (len >= 0)
+ lockd_down();
+
+ kfree(toclose);
+ return len;
+}
+
+/*
+ * A transport listener is added by writing it's transport name and
+ * a port number.
+ */
+static ssize_t __write_ports_addxprt(char *buf)
+{
+ char transport[16];
+ int port, err;
+
+ if (sscanf(buf, "%15s %4u", transport, &port) != 2)
+ return -EINVAL;
+
+ if (port < 1 || port > USHORT_MAX)
+ return -EINVAL;
+
+ err = nfsd_create_serv();
+ if (err != 0)
+ return err;
+
+ err = svc_create_xprt(nfsd_serv, transport,
+ PF_INET, port, SVC_SOCK_ANONYMOUS);
+ if (err < 0) {
+ /* Give a reasonable perror msg for bad transport string */
+ if (err == -ENOENT)
+ err = -EPROTONOSUPPORT;
+ return err;
}
+ return 0;
+}
+
+/*
+ * A transport listener is removed by writing a "-", it's transport
+ * name, and it's port number.
+ */
+static ssize_t __write_ports_delxprt(char *buf)
+{
+ struct svc_xprt *xprt;
+ char transport[16];
+ int port;
+
+ if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
+ return -EINVAL;
+
+ if (port < 1 || port > USHORT_MAX || nfsd_serv == NULL)
+ return -EINVAL;
+
+ xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port);
+ if (xprt == NULL)
+ return -ENOTCONN;
+
+ svc_close_xprt(xprt);
+ svc_xprt_put(xprt);
+ return 0;
+}
+
+static ssize_t __write_ports(struct file *file, char *buf, size_t size)
+{
+ if (size == 0)
+ return __write_ports_names(buf);
+
+ if (isdigit(buf[0]))
+ return __write_ports_addfd(buf);
+
+ if (buf[0] == '-' && isdigit(buf[1]))
+ return __write_ports_delfd(buf);
+
+ if (isalpha(buf[0]))
+ return __write_ports_addxprt(buf);
+
+ if (buf[0] == '-' && isalpha(buf[1]))
+ return __write_ports_delxprt(buf);
+
return -EINVAL;
}
* buf: C string containing an unsigned
* integer value representing a bound
* but unconnected socket that is to be
- * used as an NFSD listener
+ * used as an NFSD listener; listen(3)
+ * must be called for a SOCK_STREAM
+ * socket, otherwise it is ignored
* size: non-zero length of C string in @buf
* Output:
* On success: NFS service is started;
nfsd_max_blksize = bsize;
mutex_unlock(&nfsd_mutex);
}
- return sprintf(buf, "%d\n", nfsd_max_blksize);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
+ nfsd_max_blksize);
}
#ifdef CONFIG_NFSD_V4
return -EINVAL;
nfs4_reset_lease(lease);
}
- sprintf(buf, "%ld\n", nfs4_lease_time());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n",
+ nfs4_lease_time());
}
/**
status = nfs4_reset_recoverydir(recdir);
}
- sprintf(buf, "%s\n", nfs4_recoverydir());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
+ nfs4_recoverydir());
}
/**
#define NFSDDBG_FACILITY NFSDDBG_FH
-static int nfsd_nr_verified;
-static int nfsd_nr_put;
-
/*
* our acceptability function.
* if NOSUBTREECHECK, accept anything
fhp->fh_dentry = dentry;
fhp->fh_export = exp;
- nfsd_nr_verified++;
return 0;
out:
exp_put(exp);
return nfserr_opnotsupp;
}
- nfsd_nr_verified++;
return 0;
}
fhp->fh_pre_saved = 0;
fhp->fh_post_saved = 0;
#endif
- nfsd_nr_put++;
}
if (exp) {
cache_put(&exp->h, &svc_export_cache);
extern void __locks_copy_lock(struct file_lock *, const struct file_lock *);
extern void locks_remove_posix(struct file *, fl_owner_t);
extern void locks_remove_flock(struct file *);
+extern void locks_release_private(struct file_lock *);
extern void posix_test_lock(struct file *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
extern int posix_lock_file_wait(struct file *, struct file_lock *);
#include <linux/uio.h>
/*
- * Representation of a reply cache entry. The first two members *must*
- * be hash_next and hash_prev.
+ * Representation of a reply cache entry.
*/
struct svc_cacherep {
struct hlist_node c_hash;
__u64 fh_pre_size; /* size before operation */
struct timespec fh_pre_mtime; /* mtime before oper */
struct timespec fh_pre_ctime; /* ctime before oper */
+ /*
+ * pre-op nfsv4 change attr: note must check IS_I_VERSION(inode)
+ * to find out if it is valid.
+ */
+ u64 fh_pre_change;
/* Post-op attributes saved in fh_unlock */
struct kstat fh_post_attr; /* full attrs after operation */
+ u64 fh_post_change; /* nfsv4 change; see above */
#endif /* CONFIG_NFSD_V3 */
} svc_fh;
fhp->fh_pre_mtime = inode->i_mtime;
fhp->fh_pre_ctime = inode->i_ctime;
fhp->fh_pre_size = inode->i_size;
+ fhp->fh_pre_change = inode->i_version;
fhp->fh_pre_saved = 1;
}
}
#define si_stateownerid si_opaque.so_stateownerid
#define si_fileid si_opaque.so_fileid
-
-struct nfs4_cb_recall {
- u32 cbr_ident;
- int cbr_trunc;
- stateid_t cbr_stateid;
- struct knfsd_fh cbr_fh;
- struct nfs4_delegation *cbr_dp;
-};
-
struct nfs4_delegation {
struct list_head dl_perfile;
struct list_head dl_perclnt;
struct file *dl_vfs_file;
u32 dl_type;
time_t dl_time;
- struct nfs4_cb_recall dl_recall;
+/* For recall: */
+ u32 dl_ident;
+ stateid_t dl_stateid;
+ struct knfsd_fh dl_fh;
+ int dl_retries;
};
-#define dl_stateid dl_recall.cbr_stateid
-#define dl_fh dl_recall.cbr_fh
-
/* client delegation callback info */
-struct nfs4_callback {
+struct nfs4_cb_conn {
/* SETCLIENTID info */
u32 cb_addr;
unsigned short cb_port;
/* RPC client info */
atomic_t cb_set; /* successful CB_NULL call */
struct rpc_clnt * cb_client;
+ struct rpc_cred * cb_cred;
};
/* Maximum number of slots per session. 128 is useful for long haul TCP */
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
- struct nfs4_callback cl_callback; /* callback info */
+ struct nfs4_cb_conn cl_cb_conn; /* callback info */
atomic_t cl_count; /* ref count */
u32 cl_firststate; /* recovery dir creation */
struct nfsd4_change_info {
u32 atomic;
+ bool change_supported;
u32 before_ctime_sec;
u32 before_ctime_nsec;
+ u64 before_change;
u32 after_ctime_sec;
u32 after_ctime_nsec;
+ u64 after_change;
};
struct nfsd4_access {
{
BUG_ON(!fhp->fh_pre_saved || !fhp->fh_post_saved);
cinfo->atomic = 1;
- cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
- cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
- cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
- cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
+ cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
+ if (cinfo->change_supported) {
+ cinfo->before_change = fhp->fh_pre_change;
+ cinfo->after_change = fhp->fh_post_change;
+ } else {
+ cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
+ cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
+ cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
+ cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
+ }
}
int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
int svc_print_xprts(char *buf, int maxlen);
struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
const sa_family_t af, const unsigned short port);
-int svc_xprt_names(struct svc_serv *serv, char *buf, int buflen);
+int svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen);
static inline void svc_xprt_get(struct svc_xprt *xprt)
{
return 0;
}
-static inline size_t svc_addr_len(struct sockaddr *sa)
+static inline size_t svc_addr_len(const struct sockaddr *sa)
{
switch (sa->sa_family) {
case AF_INET:
case AF_INET6:
return sizeof(struct sockaddr_in6);
}
- return -EAFNOSUPPORT;
+
+ return 0;
}
static inline unsigned short svc_xprt_local_port(const struct svc_xprt *xprt)
int svc_send(struct svc_rqst *);
void svc_drop(struct svc_rqst *);
void svc_sock_update_bufs(struct svc_serv *serv);
-int svc_sock_names(char *buf, struct svc_serv *serv, char *toclose);
-int svc_addsock(struct svc_serv *serv, int fd, char *name_return);
+int svc_sock_names(struct svc_serv *serv, char *buf,
+ const size_t buflen,
+ const char *toclose);
+int svc_addsock(struct svc_serv *serv, const int fd,
+ char *name_return, const size_t len);
void svc_init_xprt_sock(void);
void svc_cleanup_xprt_sock(void);
#include <net/sock.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/svc_xprt.h>
+#include <linux/sunrpc/svcsock.h>
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
}
EXPORT_SYMBOL_GPL(svc_find_xprt);
-/*
- * Format a buffer with a list of the active transports. A zero for
- * the buflen parameter disables target buffer overflow checking.
+static int svc_one_xprt_name(const struct svc_xprt *xprt,
+ char *pos, int remaining)
+{
+ int len;
+
+ len = snprintf(pos, remaining, "%s %u\n",
+ xprt->xpt_class->xcl_name,
+ svc_xprt_local_port(xprt));
+ if (len >= remaining)
+ return -ENAMETOOLONG;
+ return len;
+}
+
+/**
+ * svc_xprt_names - format a buffer with a list of transport names
+ * @serv: pointer to an RPC service
+ * @buf: pointer to a buffer to be filled in
+ * @buflen: length of buffer to be filled in
+ *
+ * Fills in @buf with a string containing a list of transport names,
+ * each name terminated with '\n'.
+ *
+ * Returns positive length of the filled-in string on success; otherwise
+ * a negative errno value is returned if an error occurs.
*/
-int svc_xprt_names(struct svc_serv *serv, char *buf, int buflen)
+int svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen)
{
struct svc_xprt *xprt;
- char xprt_str[64];
- int totlen = 0;
- int len;
+ int len, totlen;
+ char *pos;
/* Sanity check args */
if (!serv)
return 0;
spin_lock_bh(&serv->sv_lock);
+
+ pos = buf;
+ totlen = 0;
list_for_each_entry(xprt, &serv->sv_permsocks, xpt_list) {
- len = snprintf(xprt_str, sizeof(xprt_str),
- "%s %d\n", xprt->xpt_class->xcl_name,
- svc_xprt_local_port(xprt));
- /* If the string was truncated, replace with error string */
- if (len >= sizeof(xprt_str))
- strcpy(xprt_str, "name-too-long\n");
- /* Don't overflow buffer */
- len = strlen(xprt_str);
- if (buflen && (len + totlen >= buflen))
+ len = svc_one_xprt_name(xprt, pos, buflen - totlen);
+ if (len < 0) {
+ *buf = '\0';
+ totlen = len;
+ }
+ if (len <= 0)
break;
- strcpy(buf+totlen, xprt_str);
+
+ pos += len;
totlen += len;
}
+
spin_unlock_bh(&serv->sv_lock);
return totlen;
}
/*
* Report socket names for nfsdfs
*/
-static int one_sock_name(char *buf, struct svc_sock *svsk)
+static int svc_one_sock_name(struct svc_sock *svsk, char *buf, int remaining)
{
+ const struct sock *sk = svsk->sk_sk;
+ const char *proto_name = sk->sk_protocol == IPPROTO_UDP ?
+ "udp" : "tcp";
int len;
- switch(svsk->sk_sk->sk_family) {
- case AF_INET:
- len = sprintf(buf, "ipv4 %s %pI4 %d\n",
- svsk->sk_sk->sk_protocol == IPPROTO_UDP ?
- "udp" : "tcp",
- &inet_sk(svsk->sk_sk)->rcv_saddr,
- inet_sk(svsk->sk_sk)->num);
+ switch (sk->sk_family) {
+ case PF_INET:
+ len = snprintf(buf, remaining, "ipv4 %s %pI4 %d\n",
+ proto_name,
+ &inet_sk(sk)->rcv_saddr,
+ inet_sk(sk)->num);
+ break;
+ case PF_INET6:
+ len = snprintf(buf, remaining, "ipv6 %s %pI6 %d\n",
+ proto_name,
+ &inet6_sk(sk)->rcv_saddr,
+ inet_sk(sk)->num);
break;
default:
- len = sprintf(buf, "*unknown-%d*\n",
- svsk->sk_sk->sk_family);
+ len = snprintf(buf, remaining, "*unknown-%d*\n",
+ sk->sk_family);
+ }
+
+ if (len >= remaining) {
+ *buf = '\0';
+ return -ENAMETOOLONG;
}
return len;
}
-int
-svc_sock_names(char *buf, struct svc_serv *serv, char *toclose)
+/**
+ * svc_sock_names - construct a list of listener names in a string
+ * @serv: pointer to RPC service
+ * @buf: pointer to a buffer to fill in with socket names
+ * @buflen: size of the buffer to be filled
+ * @toclose: pointer to '\0'-terminated C string containing the name
+ * of a listener to be closed
+ *
+ * Fills in @buf with a '\n'-separated list of names of listener
+ * sockets. If @toclose is not NULL, the socket named by @toclose
+ * is closed, and is not included in the output list.
+ *
+ * Returns positive length of the socket name string, or a negative
+ * errno value on error.
+ */
+int svc_sock_names(struct svc_serv *serv, char *buf, const size_t buflen,
+ const char *toclose)
{
struct svc_sock *svsk, *closesk = NULL;
int len = 0;
if (!serv)
return 0;
+
spin_lock_bh(&serv->sv_lock);
list_for_each_entry(svsk, &serv->sv_permsocks, sk_xprt.xpt_list) {
- int onelen = one_sock_name(buf+len, svsk);
- if (toclose && strcmp(toclose, buf+len) == 0)
+ int onelen = svc_one_sock_name(svsk, buf + len, buflen - len);
+ if (onelen < 0) {
+ len = onelen;
+ break;
+ }
+ if (toclose && strcmp(toclose, buf + len) == 0)
closesk = svsk;
else
len += onelen;
}
spin_unlock_bh(&serv->sv_lock);
+
if (closesk)
/* Should unregister with portmap, but you cannot
* unregister just one protocol...
long all[SVC_PKTINFO_SPACE / sizeof(long)];
} buffer;
struct cmsghdr *cmh = &buffer.hdr;
- int err, len;
struct msghdr msg = {
.msg_name = svc_addr(rqstp),
.msg_control = cmh,
.msg_controllen = sizeof(buffer),
.msg_flags = MSG_DONTWAIT,
};
+ size_t len;
+ int err;
if (test_and_clear_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags))
/* udp sockets need large rcvbuf as all pending
return -EAGAIN;
}
len = svc_addr_len(svc_addr(rqstp));
- if (len < 0)
- return len;
+ if (len == 0)
+ return -EAFNOSUPPORT;
rqstp->rq_addrlen = len;
if (skb->tstamp.tv64 == 0) {
skb->tstamp = ktime_get_real();
return svsk;
}
-int svc_addsock(struct svc_serv *serv,
- int fd,
- char *name_return)
+/**
+ * svc_addsock - add a listener socket to an RPC service
+ * @serv: pointer to RPC service to which to add a new listener
+ * @fd: file descriptor of the new listener
+ * @name_return: pointer to buffer to fill in with name of listener
+ * @len: size of the buffer
+ *
+ * Fills in socket name and returns positive length of name if successful.
+ * Name is terminated with '\n'. On error, returns a negative errno
+ * value.
+ */
+int svc_addsock(struct svc_serv *serv, const int fd, char *name_return,
+ const size_t len)
{
int err = 0;
struct socket *so = sockfd_lookup(fd, &err);
sockfd_put(so);
return err;
}
- return one_sock_name(name_return, svsk);
+ return svc_one_sock_name(svsk, name_return, len);
}
EXPORT_SYMBOL_GPL(svc_addsock);
projects / linux-2.6-block.git / commitdiff