If unsure, say N.
config NFS_V2
- bool "NFS client support for NFS version 2"
+ tristate "NFS client support for NFS version 2"
depends on NFS_FS
default y
help
If unsure, say Y.
config NFS_V3
- bool "NFS client support for NFS version 3"
+ tristate "NFS client support for NFS version 3"
depends on NFS_FS
default y
help
If unsure, say N.
config NFS_V4
- bool "NFS client support for NFS version 4"
+ tristate "NFS client support for NFS version 4"
depends on NFS_FS
select SUNRPC_GSS
select KEYS
write.o namespace.o mount_clnt.o \
dns_resolve.o cache_lib.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o
-nfs-$(CONFIG_NFS_V2) += proc.o nfs2xdr.o
-nfs-$(CONFIG_NFS_V3) += nfs3proc.o nfs3xdr.o
-nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
-nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
- nfs4super.o nfs4file.o delegation.o idmap.o \
- callback.o callback_xdr.o callback_proc.o \
- nfs4namespace.o nfs4getroot.o nfs4client.o
-nfs-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
+nfs-$(CONFIG_SYSCTL) += sysctl.o
+nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
-ifeq ($(CONFIG_SYSCTL), y)
-nfs-y += sysctl.o
-nfs-$(CONFIG_NFS_V4) += nfs4sysctl.o
-endif
+obj-$(CONFIG_NFS_V2) += nfs2.o
+nfs2-y := nfs2super.o proc.o nfs2xdr.o
-nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
+obj-$(CONFIG_NFS_V3) += nfs3.o
+nfs3-y := nfs3super.o nfs3client.o nfs3proc.o nfs3xdr.o
+nfs3-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
+
+obj-$(CONFIG_NFS_V4) += nfs4.o
+nfs4-y := nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o nfs4super.o nfs4file.o \
+ delegation.o idmap.o callback.o callback_xdr.o callback_proc.o \
+ nfs4namespace.o nfs4getroot.o nfs4client.o
+nfs4-$(CONFIG_SYSCTL) += nfs4sysctl.o
+nfs4-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
nfs_layout_nfsv41_files-y := nfs4filelayout.o nfs4filelayoutdev.o
schedule_work(&rdata->task.u.tk_work);
}
+static bool
+bl_check_alignment(u64 offset, u32 len, unsigned long blkmask)
+{
+ if ((offset & blkmask) || (len & blkmask))
+ return false;
+ return true;
+}
+
static enum pnfs_try_status
bl_read_pagelist(struct nfs_read_data *rdata)
{
dprintk("%s enter nr_pages %u offset %lld count %u\n", __func__,
rdata->pages.npages, f_offset, (unsigned int)rdata->args.count);
+ if (!bl_check_alignment(f_offset, rdata->args.count, PAGE_CACHE_MASK))
+ goto use_mds;
+
par = alloc_parallel(rdata);
if (!par)
goto use_mds;
struct bio *bio = NULL;
struct pnfs_block_extent *be = NULL, *cow_read = NULL;
sector_t isect, last_isect = 0, extent_length = 0;
- struct parallel_io *par;
+ struct parallel_io *par = NULL;
loff_t offset = wdata->args.offset;
size_t count = wdata->args.count;
struct page **pages = wdata->args.pages;
NFS_SERVER(header->inode)->pnfs_blksize >> PAGE_CACHE_SHIFT;
dprintk("%s enter, %Zu@%lld\n", __func__, count, offset);
+ /* Check for alignment first */
+ if (!bl_check_alignment(offset, count, PAGE_CACHE_MASK))
+ goto out_mds;
+
/* At this point, wdata->pages is a (sequential) list of nfs_pages.
* We want to write each, and if there is an error set pnfs_error
* to have it redone using nfs.
return 0;
}
+static void
+bl_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
+{
+ if (!bl_check_alignment(req->wb_offset, req->wb_bytes, PAGE_CACHE_MASK))
+ nfs_pageio_reset_read_mds(pgio);
+ else
+ pnfs_generic_pg_init_read(pgio, req);
+}
+
+static void
+bl_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
+{
+ if (!bl_check_alignment(req->wb_offset, req->wb_bytes, PAGE_CACHE_MASK))
+ nfs_pageio_reset_write_mds(pgio);
+ else
+ pnfs_generic_pg_init_write(pgio, req);
+}
+
static const struct nfs_pageio_ops bl_pg_read_ops = {
- .pg_init = pnfs_generic_pg_init_read,
+ .pg_init = bl_pg_init_read,
.pg_test = pnfs_generic_pg_test,
.pg_doio = pnfs_generic_pg_readpages,
};
static const struct nfs_pageio_ops bl_pg_write_ops = {
- .pg_init = pnfs_generic_pg_init_write,
+ .pg_init = bl_pg_init_write,
.pg_test = pnfs_generic_pg_test,
.pg_doio = pnfs_generic_pg_writepages,
};
static DEFINE_MUTEX(nfs_callback_mutex);
static struct svc_program nfs4_callback_program;
-unsigned int nfs_callback_set_tcpport;
-unsigned short nfs_callback_tcpport;
unsigned short nfs_callback_tcpport6;
-#define NFS_CALLBACK_MAXPORTNR (65535U)
-
-static int param_set_portnr(const char *val, const struct kernel_param *kp)
-{
- unsigned long num;
- int ret;
-
- if (!val)
- return -EINVAL;
- ret = strict_strtoul(val, 0, &num);
- if (ret == -EINVAL || num > NFS_CALLBACK_MAXPORTNR)
- return -EINVAL;
- *((unsigned int *)kp->arg) = num;
- return 0;
-}
-static struct kernel_param_ops param_ops_portnr = {
- .set = param_set_portnr,
- .get = param_get_uint,
-};
-#define param_check_portnr(name, p) __param_check(name, p, unsigned int);
-
-module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644);
/*
* This is the NFSv4 callback kernel thread.
ret = -ENOMEM;
goto out_err;
}
+ /* As there is only one thread we need to over-ride the
+ * default maximum of 80 connections
+ */
+ serv->sv_maxconn = 1024;
ret = svc_bind(serv, net);
if (ret < 0) {
struct cb_process_state *cps);
extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
struct cb_process_state *cps);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
extern void nfs_callback_down(int minorversion);
extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,
#include "internal.h"
#include "fscache.h"
#include "pnfs.h"
+#include "nfs.h"
#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_CLIENT
static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
+static DEFINE_SPINLOCK(nfs_version_lock);
+static DEFINE_MUTEX(nfs_version_mutex);
+static LIST_HEAD(nfs_versions);
/*
* RPC cruft for NFS
*/
static const struct rpc_version *nfs_version[5] = {
-#ifdef CONFIG_NFS_V2
- [2] = &nfs_version2,
-#endif
-#ifdef CONFIG_NFS_V3
- [3] = &nfs_version3,
-#endif
-#ifdef CONFIG_NFS_V4
- [4] = &nfs_version4,
-#endif
+ [2] = NULL,
+ [3] = NULL,
+ [4] = NULL,
};
const struct rpc_program nfs_program = {
.program = &nfs_program
};
+static struct nfs_subversion *find_nfs_version(unsigned int version)
+{
+ struct nfs_subversion *nfs;
+ spin_lock(&nfs_version_lock);
-#ifdef CONFIG_NFS_V3_ACL
-static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program };
-static const struct rpc_version *nfsacl_version[] = {
- [3] = &nfsacl_version3,
-};
+ list_for_each_entry(nfs, &nfs_versions, list) {
+ if (nfs->rpc_ops->version == version) {
+ spin_unlock(&nfs_version_lock);
+ return nfs;
+ }
+ };
-const struct rpc_program nfsacl_program = {
- .name = "nfsacl",
- .number = NFS_ACL_PROGRAM,
- .nrvers = ARRAY_SIZE(nfsacl_version),
- .version = nfsacl_version,
- .stats = &nfsacl_rpcstat,
-};
-#endif /* CONFIG_NFS_V3_ACL */
+ spin_unlock(&nfs_version_lock);
+ return ERR_PTR(-EPROTONOSUPPORT);;
+}
+
+struct nfs_subversion *get_nfs_version(unsigned int version)
+{
+ struct nfs_subversion *nfs = find_nfs_version(version);
+
+ if (IS_ERR(nfs)) {
+ mutex_lock(&nfs_version_mutex);
+ request_module("nfs%d", version);
+ nfs = find_nfs_version(version);
+ mutex_unlock(&nfs_version_mutex);
+ }
+
+ if (!IS_ERR(nfs))
+ try_module_get(nfs->owner);
+ return nfs;
+}
+
+void put_nfs_version(struct nfs_subversion *nfs)
+{
+ module_put(nfs->owner);
+}
+
+void register_nfs_version(struct nfs_subversion *nfs)
+{
+ spin_lock(&nfs_version_lock);
+
+ list_add(&nfs->list, &nfs_versions);
+ nfs_version[nfs->rpc_ops->version] = nfs->rpc_vers;
+
+ spin_unlock(&nfs_version_lock);
+}
+EXPORT_SYMBOL_GPL(register_nfs_version);
+
+void unregister_nfs_version(struct nfs_subversion *nfs)
+{
+ spin_lock(&nfs_version_lock);
+
+ nfs_version[nfs->rpc_ops->version] = NULL;
+ list_del(&nfs->list);
+
+ spin_unlock(&nfs_version_lock);
+}
+EXPORT_SYMBOL_GPL(unregister_nfs_version);
/*
* Allocate a shared client record
if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
goto error_0;
- clp->rpc_ops = cl_init->rpc_ops;
+ clp->cl_nfs_mod = cl_init->nfs_mod;
+ try_module_get(clp->cl_nfs_mod->owner);
+
+ clp->rpc_ops = clp->cl_nfs_mod->rpc_ops;
atomic_set(&clp->cl_count, 1);
clp->cl_cons_state = NFS_CS_INITING;
return clp;
error_cleanup:
+ put_nfs_version(clp->cl_nfs_mod);
kfree(clp);
error_0:
return ERR_PTR(err);
}
+EXPORT_SYMBOL_GPL(nfs_alloc_client);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
void nfs_cleanup_cb_ident_idr(struct net *net)
{
put_rpccred(clp->cl_machine_cred);
put_net(clp->cl_net);
+ put_nfs_version(clp->cl_nfs_mod);
kfree(clp->cl_hostname);
kfree(clp);
dprintk("<-- nfs_free_client()\n");
}
+EXPORT_SYMBOL_GPL(nfs_free_client);
/*
* Release a reference to a shared client record
}
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_sockaddr_match_ipaddr);
#endif /* CONFIG_NFS_V4_1 */
/*
continue;
/* Different NFS versions cannot share the same nfs_client */
- if (clp->rpc_ops != data->rpc_ops)
+ if (clp->rpc_ops != data->nfs_mod->rpc_ops)
continue;
if (clp->cl_proto != data->proto)
return wait_event_killable(nfs_client_active_wq,
nfs_client_init_is_complete(clp));
}
+EXPORT_SYMBOL_GPL(nfs_wait_client_init_complete);
/*
* Found an existing client. Make sure it's ready before returning.
{
struct nfs_client *clp, *new = NULL;
struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
+ const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops;
dprintk("--> nfs_get_client(%s,v%u)\n",
- cl_init->hostname ?: "", cl_init->rpc_ops->version);
+ cl_init->hostname ?: "", rpc_ops->version);
/* see if the client already exists */
do {
list_add(&new->cl_share_link, &nn->nfs_client_list);
spin_unlock(&nn->nfs_client_lock);
new->cl_flags = cl_init->init_flags;
- return cl_init->rpc_ops->init_client(new,
- timeparms, ip_addr,
- authflavour);
+ return rpc_ops->init_client(new, timeparms, ip_addr,
+ authflavour);
}
spin_unlock(&nn->nfs_client_lock);
- new = cl_init->rpc_ops->alloc_client(cl_init);
+ new = rpc_ops->alloc_client(cl_init);
} while (!IS_ERR(new));
dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
cl_init->hostname ?: "", PTR_ERR(new));
return new;
}
+EXPORT_SYMBOL_GPL(nfs_get_client);
/*
* Mark a server as ready or failed
clp->cl_cons_state = state;
wake_up_all(&nfs_client_active_wq);
}
+EXPORT_SYMBOL_GPL(nfs_mark_client_ready);
/*
* Initialise the timeout values for a connection
BUG();
}
}
+EXPORT_SYMBOL_GPL(nfs_init_timeout_values);
/*
* Create an RPC client handle
clp->cl_rpcclient = clnt;
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_create_rpc_client);
/*
* Version 2 or 3 client destruction
return 0;
}
-/*
- * Initialise an NFSv3 ACL client connection
- */
-#ifdef CONFIG_NFS_V3_ACL
-static void nfs_init_server_aclclient(struct nfs_server *server)
-{
- if (server->nfs_client->rpc_ops->version != 3)
- goto out_noacl;
- if (server->flags & NFS_MOUNT_NOACL)
- goto out_noacl;
-
- server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
- if (IS_ERR(server->client_acl))
- goto out_noacl;
-
- /* No errors! Assume that Sun nfsacls are supported */
- server->caps |= NFS_CAP_ACLS;
- return;
-
-out_noacl:
- server->caps &= ~NFS_CAP_ACLS;
-}
-#else
-static inline void nfs_init_server_aclclient(struct nfs_server *server)
-{
- server->flags &= ~NFS_MOUNT_NOACL;
- server->caps &= ~NFS_CAP_ACLS;
-}
-#endif
-
/*
* Create a general RPC client
*/
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
/**
* nfs_init_client - Initialise an NFS2 or NFS3 client
dprintk("<-- nfs_init_client() = xerror %d\n", error);
return ERR_PTR(error);
}
+EXPORT_SYMBOL_GPL(nfs_init_client);
/*
* Create a version 2 or 3 client
*/
static int nfs_init_server(struct nfs_server *server,
- const struct nfs_parsed_mount_data *data)
+ const struct nfs_parsed_mount_data *data,
+ struct nfs_subversion *nfs_mod)
{
struct nfs_client_initdata cl_init = {
.hostname = data->nfs_server.hostname,
.addr = (const struct sockaddr *)&data->nfs_server.address,
.addrlen = data->nfs_server.addrlen,
- .rpc_ops = NULL,
+ .nfs_mod = nfs_mod,
.proto = data->nfs_server.protocol,
.net = data->net,
};
dprintk("--> nfs_init_server()\n");
- switch (data->version) {
-#ifdef CONFIG_NFS_V2
- case 2:
- cl_init.rpc_ops = &nfs_v2_clientops;
- break;
-#endif
-#ifdef CONFIG_NFS_V3
- case 3:
- cl_init.rpc_ops = &nfs_v3_clientops;
- break;
-#endif
- default:
- return -EPROTONOSUPPORT;
- }
-
nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
data->timeo, data->retrans);
if (data->flags & NFS_MOUNT_NORESVPORT)
server->mountd_protocol = data->mount_server.protocol;
server->namelen = data->namlen;
- /* Create a client RPC handle for the NFSv3 ACL management interface */
- nfs_init_server_aclclient(server);
dprintk("<-- nfs_init_server() = 0 [new %p]\n", clp);
return 0;
dprintk("nfs_probe_fsinfo: error = %d\n", -error);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_probe_fsinfo);
/*
* Copy useful information when duplicating a server record
target->caps = source->caps;
target->options = source->options;
}
+EXPORT_SYMBOL_GPL(nfs_server_copy_userdata);
void nfs_server_insert_lists(struct nfs_server *server)
{
spin_unlock(&nn->nfs_client_lock);
}
+EXPORT_SYMBOL_GPL(nfs_server_insert_lists);
static void nfs_server_remove_lists(struct nfs_server *server)
{
return server;
}
+EXPORT_SYMBOL_GPL(nfs_alloc_server);
/*
* Free up a server record
nfs_release_automount_timer();
dprintk("<-- nfs_free_server()\n");
}
+EXPORT_SYMBOL_GPL(nfs_free_server);
/*
* Create a version 2 or 3 volume record
* - keyed on server and FSID
*/
-struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
- struct nfs_fh *mntfh)
+struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info,
+ struct nfs_subversion *nfs_mod)
{
struct nfs_server *server;
struct nfs_fattr *fattr;
goto error;
/* Get a client representation */
- error = nfs_init_server(server, data);
+ error = nfs_init_server(server, mount_info->parsed, nfs_mod);
if (error < 0)
goto error;
BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
/* Probe the root fh to retrieve its FSID */
- error = nfs_probe_fsinfo(server, mntfh, fattr);
+ error = nfs_probe_fsinfo(server, mount_info->mntfh, fattr);
if (error < 0)
goto error;
if (server->nfs_client->rpc_ops->version == 3) {
if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN)
server->namelen = NFS3_MAXNAMLEN;
- if (!(data->flags & NFS_MOUNT_NORDIRPLUS))
+ if (!(mount_info->parsed->flags & NFS_MOUNT_NORDIRPLUS))
server->caps |= NFS_CAP_READDIRPLUS;
} else {
if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN)
}
if (!(fattr->valid & NFS_ATTR_FATTR)) {
- error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
+ error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh, fattr);
if (error < 0) {
dprintk("nfs_create_server: getattr error = %d\n", -error);
goto error;
nfs_free_server(server);
return ERR_PTR(error);
}
+EXPORT_SYMBOL_GPL(nfs_create_server);
/*
* Clone an NFS2, NFS3 or NFS4 server record
flavor);
if (error < 0)
goto out_free_server;
- if (!IS_ERR(source->client_acl))
- nfs_init_server_aclclient(server);
/* probe the filesystem info for this server filesystem */
error = nfs_probe_fsinfo(server, fh, fattr_fsinfo);
dprintk("<-- nfs_clone_server() = error %d\n", error);
return ERR_PTR(error);
}
+EXPORT_SYMBOL_GPL(nfs_clone_server);
void nfs_clients_init(struct net *net)
{
INIT_LIST_HEAD(&nn->nfs_client_list);
INIT_LIST_HEAD(&nn->nfs_volume_list);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
idr_init(&nn->cb_ident_idr);
#endif
spin_lock_init(&nn->nfs_client_lock);
#ifndef FS_NFS_DELEGATION_H
#define FS_NFS_DELEGATION_H
-#if defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V4)
/*
* NFSv4 delegation
*/
* 6 Jun 1999 Cache readdir lookups in the page cache. -DaveM
*/
+#include <linux/module.h>
#include <linux/time.h>
#include <linux/errno.h>
#include <linux/stat.h>
{
NFS_I(dir)->cache_change_attribute++;
}
+EXPORT_SYMBOL_GPL(nfs_force_lookup_revalidate);
/*
* A check for whether or not the parent directory has changed.
.d_automount = nfs_d_automount,
.d_release = nfs_d_release,
};
+EXPORT_SYMBOL_GPL(nfs_dentry_operations);
struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags)
{
nfs_free_fhandle(fhandle);
return res;
}
+EXPORT_SYMBOL_GPL(nfs_lookup);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
static int nfs4_lookup_revalidate(struct dentry *, unsigned int);
const struct dentry_operations nfs4_dentry_operations = {
.d_automount = nfs_d_automount,
.d_release = nfs_d_release,
};
+EXPORT_SYMBOL_GPL(nfs4_dentry_operations);
static fmode_t flags_to_mode(int flags)
{
return finish_no_open(file, res);
}
+EXPORT_SYMBOL_GPL(nfs_atomic_open);
static int nfs4_lookup_revalidate(struct dentry *dentry, unsigned int flags)
{
dput(parent);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_instantiate);
/*
* Following a failed create operation, we drop the dentry rather
d_drop(dentry);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_create);
/*
* See comments for nfs_proc_create regarding failed operations.
d_drop(dentry);
return status;
}
+EXPORT_SYMBOL_GPL(nfs_mknod);
/*
* See comments for nfs_proc_create regarding failed operations.
d_drop(dentry);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_mkdir);
static void nfs_dentry_handle_enoent(struct dentry *dentry)
{
return error;
}
+EXPORT_SYMBOL_GPL(nfs_rmdir);
/*
* Remove a file after making sure there are no pending writes,
d_rehash(dentry);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_unlink);
/*
* To create a symbolic link, most file systems instantiate a new inode,
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_symlink);
int
nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
}
return error;
}
+EXPORT_SYMBOL_GPL(nfs_link);
/*
* RENAME
dput(dentry);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_rename);
static DEFINE_SPINLOCK(nfs_access_lru_lock);
static LIST_HEAD(nfs_access_lru_list);
spin_unlock(&nfs_access_lru_lock);
nfs_access_free_list(&head);
}
+EXPORT_SYMBOL_GPL(nfs_access_zap_cache);
static struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, struct rpc_cred *cred)
{
{
return nfs_do_access(inode, cred, nfs_open_permission_mask(openflags));
}
+EXPORT_SYMBOL_GPL(nfs_may_open);
int nfs_permission(struct inode *inode, int mask)
{
res = generic_permission(inode, mask);
goto out;
}
+EXPORT_SYMBOL_GPL(nfs_permission);
/*
* Local variables:
inode_dio_done(inode);
}
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
{
struct nfs_pageio_descriptor desc;
#ifdef CONFIG_NFS_USE_KERNEL_DNS
+#include <linux/module.h>
#include <linux/sunrpc/clnt.h>
#include <linux/dns_resolver.h>
#include "dns_resolve.h"
kfree(ip_addr);
return ret;
}
+EXPORT_SYMBOL_GPL(nfs_dns_resolve_name);
#else
+#include <linux/module.h>
#include <linux/hash.h>
#include <linux/string.h>
#include <linux/kmod.h>
ret = -ESRCH;
return ret;
}
+EXPORT_SYMBOL_GPL(nfs_dns_resolve_name);
int nfs_dns_resolver_cache_init(struct net *net)
{
* nfs regular file handling functions
*/
+#include <linux/module.h>
#include <linux/time.h>
#include <linux/kernel.h>
#include <linux/errno.h>
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_check_flags);
/*
* Open file
nfs_inc_stats(inode, NFSIOS_VFSRELEASE);
return nfs_release(inode, filp);
}
+EXPORT_SYMBOL_GPL(nfs_file_release);
/**
* nfs_revalidate_size - Revalidate the file size
return generic_file_llseek(filp, offset, origin);
}
+EXPORT_SYMBOL_GPL(nfs_file_llseek);
/*
* Flush all dirty pages, and check for write errors.
/* Flush writes to the server and return any errors */
return vfs_fsync(file, 0);
}
+EXPORT_SYMBOL_GPL(nfs_file_flush);
ssize_t
nfs_file_read(struct kiocb *iocb, const struct iovec *iov,
}
return result;
}
+EXPORT_SYMBOL_GPL(nfs_file_read);
ssize_t
nfs_file_splice_read(struct file *filp, loff_t *ppos,
}
return res;
}
+EXPORT_SYMBOL_GPL(nfs_file_splice_read);
int
nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
}
return status;
}
+EXPORT_SYMBOL_GPL(nfs_file_mmap);
/*
* Flush any dirty pages for this process, and check for write errors.
ret = status;
return ret;
}
+EXPORT_SYMBOL_GPL(nfs_file_fsync_commit);
static int
nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);
- /* Only do I/O if gfp is a superset of GFP_KERNEL */
- if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL) {
+ /* Only do I/O if gfp is a superset of GFP_KERNEL, and we're not
+ * doing this memory reclaim for a fs-related allocation.
+ */
+ if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL &&
+ !(current->flags & PF_FSTRANS)) {
int how = FLUSH_SYNC;
/* Don't let kswapd deadlock waiting for OOM RPC calls */
printk(KERN_INFO "NFS: attempt to write to active swap file!\n");
goto out;
}
+EXPORT_SYMBOL_GPL(nfs_file_write);
ssize_t nfs_file_splice_write(struct pipe_inode_info *pipe,
struct file *filp, loff_t *ppos,
nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
return ret;
}
+EXPORT_SYMBOL_GPL(nfs_file_splice_write);
static int
do_getlk(struct file *filp, int cmd, struct file_lock *fl, int is_local)
out_err:
return ret;
}
+EXPORT_SYMBOL_GPL(nfs_lock);
/*
* Lock a (portion of) a file
if (!(fl->fl_flags & FL_FLOCK))
return -ENOLCK;
+ /*
+ * The NFSv4 protocol doesn't support LOCK_MAND, which is not part of
+ * any standard. In principle we might be able to support LOCK_MAND
+ * on NFSv2/3 since NLMv3/4 support DOS share modes, but for now the
+ * NFS code is not set up for it.
+ */
+ if (fl->fl_type & LOCK_MAND)
+ return -EINVAL;
+
if (NFS_SERVER(inode)->flags & NFS_MOUNT_LOCAL_FLOCK)
is_local = 1;
return do_unlk(filp, cmd, fl, is_local);
return do_setlk(filp, cmd, fl, is_local);
}
+EXPORT_SYMBOL_GPL(nfs_flock);
/*
* There is no protocol support for leases, so we have no way to implement
file->f_path.dentry->d_name.name, arg);
return -EINVAL;
}
+EXPORT_SYMBOL_GPL(nfs_setlease);
const struct file_operations nfs_file_operations = {
.llseek = nfs_file_llseek,
.check_flags = nfs_check_flags,
.setlease = nfs_setlease,
};
+EXPORT_SYMBOL_GPL(nfs_file_operations);
#define NFS_UINT_MAXLEN 11
-/* Default cache timeout is 10 minutes */
-unsigned int nfs_idmap_cache_timeout = 600;
static const struct cred *id_resolver_cache;
static struct key_type key_type_id_resolver_legacy;
if (ret < 0)
goto failed_put_key;
+ ret = register_key_type(&key_type_id_resolver_legacy);
+ if (ret < 0)
+ goto failed_reg_legacy;
+
set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags);
cred->thread_keyring = keyring;
cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
id_resolver_cache = cred;
return 0;
+failed_reg_legacy:
+ unregister_key_type(&key_type_id_resolver);
failed_put_key:
key_put(keyring);
failed_put_cred:
{
key_revoke(id_resolver_cache->thread_keyring);
unregister_key_type(&key_type_id_resolver);
+ unregister_key_type(&key_type_id_resolver_legacy);
put_cred(id_resolver_cache);
}
}
/* idmap classic begins here */
-module_param(nfs_idmap_cache_timeout, int, 0644);
enum {
Opt_find_uid, Opt_find_gid, Opt_find_user, Opt_find_group, Opt_find_err
};
static struct key_type key_type_id_resolver_legacy = {
- .name = "id_resolver",
+ .name = "id_legacy",
.instantiate = user_instantiate,
.match = user_match,
.revoke = user_revoke,
if (ret < 0)
goto out2;
+ BUG_ON(idmap->idmap_key_cons != NULL);
idmap->idmap_key_cons = cons;
ret = rpc_queue_upcall(idmap->idmap_pipe, msg);
out1:
kfree(msg);
out0:
- key_revoke(cons->key);
- key_revoke(cons->authkey);
+ complete_request_key(cons, ret);
return ret;
}
{
struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
struct idmap *idmap = (struct idmap *)rpci->private;
- struct key_construction *cons = idmap->idmap_key_cons;
+ struct key_construction *cons;
struct idmap_msg im;
size_t namelen_in;
int ret;
+ /* If instantiation is successful, anyone waiting for key construction
+ * will have been woken up and someone else may now have used
+ * idmap_key_cons - so after this point we may no longer touch it.
+ */
+ cons = ACCESS_ONCE(idmap->idmap_key_cons);
+ idmap->idmap_key_cons = NULL;
+
if (mlen != sizeof(im)) {
ret = -ENOSPC;
goto out;
if (!(im.im_status & IDMAP_STATUS_SUCCESS)) {
ret = mlen;
- complete_request_key(idmap->idmap_key_cons, -ENOKEY);
+ complete_request_key(cons, -ENOKEY);
goto out_incomplete;
}
}
out:
- complete_request_key(idmap->idmap_key_cons, ret);
+ complete_request_key(cons, ret);
out_incomplete:
return ret;
}
#include "fscache.h"
#include "dns_resolve.h"
#include "pnfs.h"
+#include "nfs.h"
#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_VFS
freezable_schedule();
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_wait_bit_killable);
/**
* nfs_compat_user_ino64 - returns the user-visible inode number
return ino;
}
-static void nfs_clear_inode(struct inode *inode)
+void nfs_clear_inode(struct inode *inode)
{
/*
* The following should never happen...
nfs_access_zap_cache(inode);
nfs_fscache_release_inode_cookie(inode);
}
+EXPORT_SYMBOL_GPL(nfs_clear_inode);
void nfs_evict_inode(struct inode *inode)
{
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL;
spin_unlock(&inode->i_lock);
}
+EXPORT_SYMBOL_GPL(nfs_zap_acl_cache);
void nfs_invalidate_atime(struct inode *inode)
{
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
spin_unlock(&inode->i_lock);
}
+EXPORT_SYMBOL_GPL(nfs_invalidate_atime);
/*
* Invalidate, but do not unhash, the inode.
dprintk("nfs_fhget: iget failed with error %ld\n", PTR_ERR(inode));
goto out;
}
+EXPORT_SYMBOL_GPL(nfs_fhget);
#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE|ATTR_OPEN)
out:
return error;
}
+EXPORT_SYMBOL_GPL(nfs_setattr);
/**
* nfs_vmtruncate - unmap mappings "freed" by truncate() syscall
nfs_vmtruncate(inode, attr->ia_size);
}
}
+EXPORT_SYMBOL_GPL(nfs_setattr_update_inode);
int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
out:
return err;
}
+EXPORT_SYMBOL_GPL(nfs_getattr);
static void nfs_init_lock_context(struct nfs_lock_context *l_ctx)
{
return;
nfs_revalidate_inode(server, inode);
}
+EXPORT_SYMBOL_GPL(nfs_close_context);
struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode)
{
ctx->mdsthreshold = NULL;
return ctx;
}
+EXPORT_SYMBOL_GPL(alloc_nfs_open_context);
struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx)
{
atomic_inc(&ctx->lock_context.count);
return ctx;
}
+EXPORT_SYMBOL_GPL(get_nfs_open_context);
static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync)
{
{
__put_nfs_open_context(ctx, 0);
}
+EXPORT_SYMBOL_GPL(put_nfs_open_context);
/*
* Ensure that mmap has a recent RPC credential for use when writing out
list_add(&ctx->list, &nfsi->open_files);
spin_unlock(&inode->i_lock);
}
+EXPORT_SYMBOL_GPL(nfs_file_set_open_context);
/*
* Given an inode, search for an open context with the desired characteristics
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}
+EXPORT_SYMBOL_GPL(nfs_revalidate_inode);
static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
{
fattr->owner_name = NULL;
fattr->group_name = NULL;
}
+EXPORT_SYMBOL_GPL(nfs_fattr_init);
struct nfs_fattr *nfs_alloc_fattr(void)
{
nfs_fattr_init(fattr);
return fattr;
}
+EXPORT_SYMBOL_GPL(nfs_alloc_fattr);
struct nfs_fh *nfs_alloc_fhandle(void)
{
fh->size = 0;
return fh;
}
+EXPORT_SYMBOL_GPL(nfs_alloc_fhandle);
#ifdef NFS_DEBUG
/*
return status;
}
+EXPORT_SYMBOL_GPL(nfs_refresh_inode);
static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
spin_unlock(&inode->i_lock);
return status;
}
+EXPORT_SYMBOL_GPL(nfs_post_op_update_inode);
/**
* nfs_post_op_update_inode_force_wcc - try to update the inode attribute cache
spin_unlock(&inode->i_lock);
return status;
}
+EXPORT_SYMBOL_GPL(nfs_post_op_update_inode_force_wcc);
/*
* Many nfs protocol calls return the new file attributes after
return -ESTALE;
}
-
-#ifdef CONFIG_NFS_V4
-
-/*
- * Clean out any remaining NFSv4 state that might be left over due
- * to open() calls that passed nfs_atomic_lookup, but failed to call
- * nfs_open().
- */
-void nfs4_evict_inode(struct inode *inode)
-{
- truncate_inode_pages(&inode->i_data, 0);
- clear_inode(inode);
- pnfs_return_layout(inode);
- pnfs_destroy_layout(NFS_I(inode));
- /* If we are holding a delegation, return it! */
- nfs_inode_return_delegation_noreclaim(inode);
- /* First call standard NFS clear_inode() code */
- nfs_clear_inode(inode);
-}
-#endif
-
struct inode *nfs_alloc_inode(struct super_block *sb)
{
struct nfs_inode *nfsi;
nfsi->acl_access = ERR_PTR(-EAGAIN);
nfsi->acl_default = ERR_PTR(-EAGAIN);
#endif
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
nfsi->nfs4_acl = NULL;
#endif /* CONFIG_NFS_V4 */
return &nfsi->vfs_inode;
}
+EXPORT_SYMBOL_GPL(nfs_alloc_inode);
static void nfs_i_callback(struct rcu_head *head)
{
{
call_rcu(&inode->i_rcu, nfs_i_callback);
}
+EXPORT_SYMBOL_GPL(nfs_destroy_inode);
static inline void nfs4_init_once(struct nfs_inode *nfsi)
{
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
INIT_LIST_HEAD(&nfsi->open_states);
nfsi->delegation = NULL;
nfsi->delegation_state = 0;
}
struct workqueue_struct *nfsiod_workqueue;
+EXPORT_SYMBOL_GPL(nfsiod_workqueue);
/*
* start up the nfsiod workqueue
err = nfs_dns_resolver_init();
if (err < 0)
- goto out11;
+ goto out10;;
err = register_pernet_subsys(&nfs_net_ops);
if (err < 0)
- goto out10;
+ goto out9;
err = nfs_fscache_register();
if (err < 0)
- goto out9;
+ goto out8;
err = nfsiod_start();
if (err)
- goto out8;
+ goto out7;
err = nfs_fs_proc_init();
if (err)
- goto out7;
+ goto out6;
err = nfs_init_nfspagecache();
if (err)
- goto out6;
+ goto out5;
err = nfs_init_inodecache();
if (err)
- goto out5;
+ goto out4;
err = nfs_init_readpagecache();
if (err)
- goto out4;
+ goto out3;
err = nfs_init_writepagecache();
if (err)
- goto out3;
+ goto out2;
err = nfs_init_directcache();
if (err)
- goto out2;
+ goto out1;
#ifdef CONFIG_PROC_FS
rpc_proc_register(&init_net, &nfs_rpcstat);
#endif
-
-#ifdef CONFIG_NFS_V4
- err = init_nfs_v4();
- if (err)
- goto out1;
-#endif
-
if ((err = register_nfs_fs()) != 0)
goto out0;
return 0;
out0:
-#ifdef CONFIG_NFS_V4
- exit_nfs_v4();
-out1:
-#endif
#ifdef CONFIG_PROC_FS
rpc_proc_unregister(&init_net, "nfs");
#endif
nfs_destroy_directcache();
-out2:
+out1:
nfs_destroy_writepagecache();
-out3:
+out2:
nfs_destroy_readpagecache();
-out4:
+out3:
nfs_destroy_inodecache();
-out5:
+out4:
nfs_destroy_nfspagecache();
-out6:
+out5:
nfs_fs_proc_exit();
-out7:
+out6:
nfsiod_stop();
-out8:
+out7:
nfs_fscache_unregister();
-out9:
+out8:
unregister_pernet_subsys(&nfs_net_ops);
-out10:
+out9:
nfs_dns_resolver_destroy();
-out11:
+out10:
return err;
}
static void __exit exit_nfs_fs(void)
{
-#ifdef CONFIG_NFS_V4
- exit_nfs_v4();
-#endif
nfs_destroy_directcache();
nfs_destroy_writepagecache();
nfs_destroy_readpagecache();
const char *hostname;
const struct sockaddr *addr;
size_t addrlen;
- const struct nfs_rpc_ops *rpc_ops;
+ struct nfs_subversion *nfs_mod;
int proto;
u32 minorversion;
struct net *net;
extern struct nfs_client *
nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
struct nfs4_sessionid *);
-extern struct nfs_server *nfs_create_server(
- const struct nfs_parsed_mount_data *,
- struct nfs_fh *);
+extern struct nfs_server *nfs_create_server(struct nfs_mount_info *,
+ struct nfs_subversion *);
extern struct nfs_server *nfs4_create_server(
- const struct nfs_parsed_mount_data *,
- struct nfs_fh *);
+ struct nfs_mount_info *,
+ struct nfs_subversion *);
extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *,
struct nfs_fh *);
extern void nfs_free_server(struct nfs_server *server);
int nfs_sockaddr_match_ipaddr(const struct sockaddr *, const struct sockaddr *);
#endif
+/* nfs3client.c */
+#if IS_ENABLED(CONFIG_NFS_V3)
+struct nfs_server *nfs3_create_server(struct nfs_mount_info *, struct nfs_subversion *);
+struct nfs_server *nfs3_clone_server(struct nfs_server *, struct nfs_fh *,
+ struct nfs_fattr *, rpc_authflavor_t);
+#endif
+
/* callback_xdr.c */
extern struct svc_version nfs4_callback_version1;
extern struct svc_version nfs4_callback_version4;
struct nfs_entry *, int);
/* nfs4xdr.c */
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
extern int nfs4_decode_dirent(struct xdr_stream *,
struct nfs_entry *, int);
#endif
#endif
/* nfs4proc.c */
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
extern struct rpc_procinfo nfs4_procedures[];
#endif
extern struct inode *nfs_alloc_inode(struct super_block *sb);
extern void nfs_destroy_inode(struct inode *);
extern int nfs_write_inode(struct inode *, struct writeback_control *);
+extern void nfs_clear_inode(struct inode *);
extern void nfs_evict_inode(struct inode *);
-#ifdef CONFIG_NFS_V4
-extern void nfs4_evict_inode(struct inode *);
-#endif
void nfs_zap_acl_cache(struct inode *inode);
extern int nfs_wait_bit_killable(void *word);
/* super.c */
+extern const struct super_operations nfs_sops;
+extern struct file_system_type nfs_fs_type;
extern struct file_system_type nfs_xdev_fs_type;
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
extern struct file_system_type nfs4_xdev_fs_type;
extern struct file_system_type nfs4_referral_fs_type;
#endif
+struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *,
+ struct nfs_subversion *);
void nfs_initialise_sb(struct super_block *);
int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
-struct dentry *nfs_fs_mount_common(struct file_system_type *, struct nfs_server *,
- int, const char *, struct nfs_mount_info *);
+struct dentry *nfs_fs_mount_common(struct nfs_server *, int, const char *,
+ struct nfs_mount_info *, struct nfs_subversion *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
const char *, struct nfs_mount_info *);
/* getroot.c */
extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
const char *);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *,
const char *);
* NFS namespace
*/
+#include <linux/module.h>
#include <linux/dcache.h>
#include <linux/gfp.h>
#include <linux/mount.h>
Elong:
return ERR_PTR(-ENAMETOOLONG);
}
+EXPORT_SYMBOL_GPL(nfs_path);
/*
* nfs_d_automount - Handle crossing a mountpoint on the server
const char *devname,
struct nfs_clone_mount *mountdata)
{
-#ifdef CONFIG_NFS_V4
- struct vfsmount *mnt = ERR_PTR(-EINVAL);
- switch (server->nfs_client->rpc_ops->version) {
- case 2:
- case 3:
- mnt = vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
- break;
- case 4:
- mnt = vfs_kern_mount(&nfs4_xdev_fs_type, 0, devname, mountdata);
- }
- return mnt;
-#else
return vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
-#endif
}
/**
dprintk("<-- nfs_do_submount() = %p\n", mnt);
return mnt;
}
+EXPORT_SYMBOL_GPL(nfs_do_submount);
struct vfsmount *nfs_submount(struct nfs_server *server, struct dentry *dentry,
struct nfs_fh *fh, struct nfs_fattr *fattr)
return nfs_do_submount(dentry, fh, fattr, server->client->cl_auth->au_flavor);
}
+EXPORT_SYMBOL_GPL(nfs_submount);
wait_queue_head_t bl_wq;
struct list_head nfs_client_list;
struct list_head nfs_volume_list;
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
struct idr cb_ident_idr; /* Protected by nfs_client_lock */
#endif
spinlock_t nfs_client_lock;
--- /dev/null
+/*
+ * Copyright (c) 2012 Netapp, Inc. All rights reserved.
+ *
+ * Function and structures exported by the NFS module
+ * for use by NFS version-specific modules.
+ */
+#ifndef __LINUX_INTERNAL_NFS_H
+#define __LINUX_INTERNAL_NFS_H
+
+#include <linux/fs.h>
+#include <linux/sunrpc/sched.h>
+#include <linux/nfs_xdr.h>
+
+struct nfs_subversion {
+ struct module *owner; /* THIS_MODULE pointer */
+ struct file_system_type *nfs_fs; /* NFS filesystem type */
+ const struct rpc_version *rpc_vers; /* NFS version information */
+ const struct nfs_rpc_ops *rpc_ops; /* NFS operations */
+ const struct super_operations *sops; /* NFS Super operations */
+ const struct xattr_handler **xattr; /* NFS xattr handlers */
+ struct list_head list; /* List of NFS versions */
+};
+
+struct nfs_subversion *get_nfs_version(unsigned int);
+void put_nfs_version(struct nfs_subversion *);
+void register_nfs_version(struct nfs_subversion *);
+void unregister_nfs_version(struct nfs_subversion *);
+
+#endif /* __LINUX_INTERNAL_NFS_H */
--- /dev/null
+/*
+ * Copyright (c) 2012 Netapp, Inc. All rights reserved.
+ */
+#include <linux/module.h>
+#include <linux/nfs_fs.h>
+#include "internal.h"
+#include "nfs.h"
+
+static struct nfs_subversion nfs_v2 = {
+ .owner = THIS_MODULE,
+ .nfs_fs = &nfs_fs_type,
+ .rpc_vers = &nfs_version2,
+ .rpc_ops = &nfs_v2_clientops,
+ .sops = &nfs_sops,
+};
+
+static int __init init_nfs_v2(void)
+{
+ register_nfs_version(&nfs_v2);
+ return 0;
+}
+
+static void __exit exit_nfs_v2(void)
+{
+ unregister_nfs_version(&nfs_v2);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(init_nfs_v2);
+module_exit(exit_nfs_v2);
--- /dev/null
+#include <linux/nfs_fs.h>
+#include <linux/nfs_mount.h>
+#include "internal.h"
+
+#ifdef CONFIG_NFS_V3_ACL
+static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program };
+static const struct rpc_version *nfsacl_version[] = {
+ [3] = &nfsacl_version3,
+};
+
+const struct rpc_program nfsacl_program = {
+ .name = "nfsacl",
+ .number = NFS_ACL_PROGRAM,
+ .nrvers = ARRAY_SIZE(nfsacl_version),
+ .version = nfsacl_version,
+ .stats = &nfsacl_rpcstat,
+};
+
+/*
+ * Initialise an NFSv3 ACL client connection
+ */
+static void nfs_init_server_aclclient(struct nfs_server *server)
+{
+ if (server->flags & NFS_MOUNT_NOACL)
+ goto out_noacl;
+
+ server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
+ if (IS_ERR(server->client_acl))
+ goto out_noacl;
+
+ /* No errors! Assume that Sun nfsacls are supported */
+ server->caps |= NFS_CAP_ACLS;
+ return;
+
+out_noacl:
+ server->caps &= ~NFS_CAP_ACLS;
+}
+#else
+static inline void nfs_init_server_aclclient(struct nfs_server *server)
+{
+ server->flags &= ~NFS_MOUNT_NOACL;
+ server->caps &= ~NFS_CAP_ACLS;
+}
+#endif
+
+struct nfs_server *nfs3_create_server(struct nfs_mount_info *mount_info,
+ struct nfs_subversion *nfs_mod)
+{
+ struct nfs_server *server = nfs_create_server(mount_info, nfs_mod);
+ /* Create a client RPC handle for the NFS v3 ACL management interface */
+ if (!IS_ERR(server))
+ nfs_init_server_aclclient(server);
+ return server;
+}
+
+struct nfs_server *nfs3_clone_server(struct nfs_server *source,
+ struct nfs_fh *fh,
+ struct nfs_fattr *fattr,
+ rpc_authflavor_t flavor)
+{
+ struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor);
+ if (!IS_ERR(server) && !IS_ERR(source->client_acl))
+ nfs_init_server_aclclient(server);
+ return server;
+}
.file_ops = &nfs_file_operations,
.getroot = nfs3_proc_get_root,
.submount = nfs_submount,
+ .try_mount = nfs_try_mount,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
.alloc_client = nfs_alloc_client,
.init_client = nfs_init_client,
.free_client = nfs_free_client,
+ .create_server = nfs3_create_server,
+ .clone_server = nfs3_clone_server,
};
--- /dev/null
+/*
+ * Copyright (c) 2012 Netapp, Inc. All rights reserved.
+ */
+#include <linux/module.h>
+#include <linux/nfs_fs.h>
+#include "internal.h"
+#include "nfs.h"
+
+static struct nfs_subversion nfs_v3 = {
+ .owner = THIS_MODULE,
+ .nfs_fs = &nfs_fs_type,
+ .rpc_vers = &nfs_version3,
+ .rpc_ops = &nfs_v3_clientops,
+ .sops = &nfs_sops,
+};
+
+static int __init init_nfs_v3(void)
+{
+ register_nfs_version(&nfs_v3);
+ return 0;
+}
+
+static void __exit exit_nfs_v3(void)
+{
+ unregister_nfs_version(&nfs_v3);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(init_nfs_v3);
+module_exit(exit_nfs_v3);
#ifndef __LINUX_FS_NFS_NFS4_FS_H
#define __LINUX_FS_NFS_NFS4_FS_H
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
struct idmap;
int nfs_atomic_open(struct inode *, struct dentry *, struct file *,
unsigned, umode_t, int *);
-/* write.c */
-int nfs4_write_inode(struct inode *, struct writeback_control *);
-
/* nfs4namespace.c */
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);
/* nfs4super.c */
struct nfs_mount_info;
-struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *);
-int init_nfs_v4(void);
-void exit_nfs_v4(void);
+extern struct nfs_subversion nfs_v4;
+struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *);
+extern bool nfs4_disable_idmapping;
+extern unsigned short max_session_slots;
+extern unsigned short send_implementation_id;
/* nfs4sysctl.c */
#ifdef CONFIG_SYSCTL
#define NFSDBG_FACILITY NFSDBG_CLIENT
-/*
- * Turn off NFSv4 uid/gid mapping when using AUTH_SYS
- */
-static bool nfs4_disable_idmapping = true;
-
/*
* Get a unique NFSv4.0 callback identifier which will be used
* by the V4.0 callback service to lookup the nfs_client struct
.hostname = hostname,
.addr = addr,
.addrlen = addrlen,
- .rpc_ops = &nfs_v4_clientops,
+ .nfs_mod = &nfs_v4,
.proto = proto,
.minorversion = minorversion,
.net = net,
struct nfs_client_initdata cl_init = {
.addr = ds_addr,
.addrlen = ds_addrlen,
- .rpc_ops = &nfs_v4_clientops,
+ .nfs_mod = &nfs_v4,
.proto = ds_proto,
.minorversion = mds_clp->cl_minorversion,
.net = mds_clp->cl_net,
* Create a version 4 volume record
* - keyed on server and FSID
*/
-struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
- struct nfs_fh *mntfh)
+/*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
+ struct nfs_fh *mntfh)*/
+struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info,
+ struct nfs_subversion *nfs_mod)
{
struct nfs_server *server;
int error;
return ERR_PTR(-ENOMEM);
/* set up the general RPC client */
- error = nfs4_init_server(server, data);
+ error = nfs4_init_server(server, mount_info->parsed);
if (error < 0)
goto error;
- error = nfs4_server_common_setup(server, mntfh);
+ error = nfs4_server_common_setup(server, mount_info->mntfh);
if (error < 0)
goto error;
dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
return ERR_PTR(error);
}
-
-module_param(nfs4_disable_idmapping, bool, 0644);
-MODULE_PARM_DESC(nfs4_disable_idmapping,
- "Turn off NFSv4 idmapping when using 'sec=sys'");
#define NFS4_MAX_LOOP_ON_RECOVER (10)
-static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE;
-
struct nfs4_opendata;
static int _nfs4_proc_open(struct nfs4_opendata *data);
static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
.file_ops = &nfs4_file_operations,
.getroot = nfs4_proc_get_root,
.submount = nfs4_submount,
+ .try_mount = nfs4_try_mount,
.getattr = nfs4_proc_getattr,
.setattr = nfs4_proc_setattr,
.lookup = nfs4_proc_lookup,
.alloc_client = nfs4_alloc_client,
.init_client = nfs4_init_client,
.free_client = nfs4_free_client,
+ .create_server = nfs4_create_server,
+ .clone_server = nfs_clone_server,
};
static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
NULL
};
-module_param(max_session_slots, ushort, 0644);
-MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 "
- "requests the client will negotiate");
-
/*
* Local variables:
* c-basic-offset: 8
#include <linux/nfs_idmap.h>
#include <linux/nfs4_mount.h>
#include <linux/nfs_fs.h>
+#include "delegation.h"
#include "internal.h"
#include "nfs4_fs.h"
+#include "pnfs.h"
+#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
+static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc);
+static void nfs4_evict_inode(struct inode *inode);
static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
-static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
-struct file_system_type nfs4_xdev_fs_type = {
- .owner = THIS_MODULE,
- .name = "nfs4",
- .mount = nfs4_xdev_mount,
- .kill_sb = nfs_kill_super,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
-};
-
static struct file_system_type nfs4_remote_referral_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
.remount_fs = nfs_remount,
};
+struct nfs_subversion nfs_v4 = {
+ .owner = THIS_MODULE,
+ .nfs_fs = &nfs4_fs_type,
+ .rpc_vers = &nfs_version4,
+ .rpc_ops = &nfs_v4_clientops,
+ .sops = &nfs4_sops,
+ .xattr = nfs4_xattr_handlers,
+};
+
+static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ int ret = nfs_write_inode(inode, wbc);
+
+ if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
+ int status;
+ bool sync = true;
+
+ if (wbc->sync_mode == WB_SYNC_NONE)
+ sync = false;
+
+ status = pnfs_layoutcommit_inode(inode, sync);
+ if (status < 0)
+ return status;
+ }
+ return ret;
+}
+
/*
- * Set up an NFS4 superblock
+ * Clean out any remaining NFSv4 state that might be left over due
+ * to open() calls that passed nfs_atomic_lookup, but failed to call
+ * nfs_open().
*/
-static void nfs4_fill_super(struct super_block *sb,
- struct nfs_mount_info *mount_info)
+static void nfs4_evict_inode(struct inode *inode)
{
- sb->s_time_gran = 1;
- sb->s_op = &nfs4_sops;
- /*
- * The VFS shouldn't apply the umask to mode bits. We will do
- * so ourselves when necessary.
- */
- sb->s_flags |= MS_POSIXACL;
- sb->s_xattr = nfs4_xattr_handlers;
- nfs_initialise_sb(sb);
+ truncate_inode_pages(&inode->i_data, 0);
+ clear_inode(inode);
+ pnfs_return_layout(inode);
+ pnfs_destroy_layout(NFS_I(inode));
+ /* If we are holding a delegation, return it! */
+ nfs_inode_return_delegation_noreclaim(inode);
+ /* First call standard NFS clear_inode() code */
+ nfs_clear_inode(inode);
}
/*
struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
- mount_info->fill_super = nfs4_fill_super;
mount_info->set_security = nfs_set_sb_security;
/* Get a volume representation */
- server = nfs4_create_server(mount_info->parsed, mount_info->mntfh);
+ server = nfs4_create_server(mount_info, &nfs_v4);
if (IS_ERR(server)) {
mntroot = ERR_CAST(server);
goto out;
}
- mntroot = nfs_fs_mount_common(fs_type, server, flags, dev_name, mount_info);
+ mntroot = nfs_fs_mount_common(server, flags, dev_name, mount_info, &nfs_v4);
out:
return mntroot;
}
struct dentry *nfs4_try_mount(int flags, const char *dev_name,
- struct nfs_mount_info *mount_info)
+ struct nfs_mount_info *mount_info,
+ struct nfs_subversion *nfs_mod)
{
char *export_path;
struct vfsmount *root_mnt;
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
- mount_info->fill_super = nfs4_fill_super;
-
export_path = data->nfs_server.export_path;
data->nfs_server.export_path = "/";
root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type, flags, mount_info,
return res;
}
-/*
- * Clone an NFS4 server record on xdev traversal (FSID-change)
- */
-static struct dentry *
-nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *raw_data)
-{
- struct nfs_mount_info mount_info = {
- .fill_super = nfs_clone_super,
- .set_security = nfs_clone_sb_security,
- .cloned = raw_data,
- };
- return nfs_xdev_mount_common(&nfs4_fs_type, flags, dev_name, &mount_info);
-}
-
static struct dentry *
nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
- .fill_super = nfs4_fill_super,
+ .fill_super = nfs_fill_super,
.set_security = nfs_clone_sb_security,
.cloned = raw_data,
};
goto out;
}
- mntroot = nfs_fs_mount_common(&nfs4_fs_type, server, flags, dev_name, &mount_info);
+ mntroot = nfs_fs_mount_common(server, flags, dev_name, &mount_info, &nfs_v4);
out:
nfs_free_fhandle(mount_info.mntfh);
return mntroot;
}
-int __init init_nfs_v4(void)
+static int __init init_nfs_v4(void)
{
int err;
if (err < 0)
goto out2;
+ register_nfs_version(&nfs_v4);
return 0;
out2:
nfs4_unregister_sysctl();
return err;
}
-void exit_nfs_v4(void)
+static void __exit exit_nfs_v4(void)
{
+ unregister_nfs_version(&nfs_v4);
unregister_filesystem(&nfs4_fs_type);
nfs4_unregister_sysctl();
nfs_idmap_quit();
}
+
+MODULE_LICENSE("GPL");
+
+module_init(init_nfs_v4);
+module_exit(exit_nfs_v4);
XDR_UNIT);
#endif /* CONFIG_NFS_V4_1 */
-static unsigned short send_implementation_id = 1;
-
-module_param(send_implementation_id, ushort, 0644);
-MODULE_PARM_DESC(send_implementation_id,
- "Send implementation ID with NFSv4.1 exchange_id");
-
static const umode_t nfs_type2fmt[] = {
[NF4BAD] = 0,
[NF4REG] = S_IFREG,
if (hdr->completion_ops->init_hdr)
hdr->completion_ops->init_hdr(hdr);
}
+EXPORT_SYMBOL_GPL(nfs_pgheader_init);
void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
{
desc->pg_lseg = NULL;
desc->pg_dreq = NULL;
}
+EXPORT_SYMBOL_GPL(nfs_pageio_init);
/**
* nfs_can_coalesce_requests - test two requests for compatibility
} while (ret);
return ret;
}
+EXPORT_SYMBOL_GPL(nfs_pageio_add_request);
/**
* nfs_pageio_complete - Complete I/O on an nfs_pageio_descriptor
break;
}
}
+EXPORT_SYMBOL_GPL(nfs_pageio_complete);
/**
* nfs_pageio_cond_complete - Conditional I/O completion
put_lseg(hdr->lseg);
nfs_writehdr_free(hdr);
}
+EXPORT_SYMBOL_GPL(pnfs_writehdr_free);
int
pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
put_lseg(hdr->lseg);
nfs_readhdr_free(hdr);
}
+EXPORT_SYMBOL_GPL(pnfs_readhdr_free);
int
pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
.file_ops = &nfs_file_operations,
.getroot = nfs_proc_get_root,
.submount = nfs_submount,
+ .try_mount = nfs_try_mount,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
.alloc_client = nfs_alloc_client,
.init_client = nfs_init_client,
.free_client = nfs_free_client,
+ .create_server = nfs_create_server,
+ .clone_server = nfs_clone_server,
};
}
return rhdr;
}
+EXPORT_SYMBOL_GPL(nfs_readhdr_alloc);
static struct nfs_read_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
kmem_cache_free(nfs_rdata_cachep, rhdr);
}
+EXPORT_SYMBOL_GPL(nfs_readhdr_free);
void nfs_readdata_release(struct nfs_read_data *rdata)
{
if (atomic_dec_and_test(&hdr->refcnt))
hdr->completion_ops->completion(hdr);
}
+EXPORT_SYMBOL_GPL(nfs_readdata_release);
static
int nfs_return_empty_page(struct page *page)
nfs_pageio_init(pgio, inode, &nfs_pageio_read_ops, compl_ops,
NFS_SERVER(inode)->rsize, 0);
}
+EXPORT_SYMBOL_GPL(nfs_pageio_init_read);
void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
{
return nfs_pagein_multi(desc, hdr);
return nfs_pagein_one(desc, hdr);
}
+EXPORT_SYMBOL_GPL(nfs_generic_pagein);
static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
{
#include "internal.h"
#include "fscache.h"
#include "pnfs.h"
+#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
#define NFS_TEXT_DATA 1
-#ifdef CONFIG_NFS_V3
+#if IS_ENABLED(CONFIG_NFS_V3)
#define NFS_DEFAULT_VERSION 3
#else
#define NFS_DEFAULT_VERSION 2
static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
-static struct file_system_type nfs_fs_type = {
+struct file_system_type nfs_fs_type = {
.owner = THIS_MODULE,
.name = "nfs",
.mount = nfs_fs_mount,
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
+EXPORT_SYMBOL_GPL(nfs_fs_type);
struct file_system_type nfs_xdev_fs_type = {
.owner = THIS_MODULE,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
-static const struct super_operations nfs_sops = {
+const struct super_operations nfs_sops = {
.alloc_inode = nfs_alloc_inode,
.destroy_inode = nfs_destroy_inode,
.write_inode = nfs_write_inode,
.show_stats = nfs_show_stats,
.remount_fs = nfs_remount,
};
+EXPORT_SYMBOL_GPL(nfs_sops);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *);
static int nfs4_validate_mount_data(void *options,
struct nfs_parsed_mount_data *args, const char *dev_name);
if (atomic_inc_return(&server->active) == 1)
atomic_inc(&sb->s_active);
}
+EXPORT_SYMBOL_GPL(nfs_sb_active);
void nfs_sb_deactive(struct super_block *sb)
{
if (atomic_dec_and_test(&server->active))
deactivate_super(sb);
}
+EXPORT_SYMBOL_GPL(nfs_sb_deactive);
/*
* Deliver file system statistics to userspace
dprintk("%s: statfs error = %d\n", __func__, -error);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_statfs);
/*
* Map the security flavour number to a name
nfs_show_mountd_netid(m, nfss, showdefaults);
}
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss,
int showdefaults)
{
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_show_options);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
#ifdef CONFIG_NFS_V4_1
static void show_sessions(struct seq_file *m, struct nfs_server *server)
{
}
}
#else
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
static void show_pnfs(struct seq_file *m, struct nfs_server *server)
{
}
free_page((unsigned long)page);
return err;
}
+EXPORT_SYMBOL_GPL(nfs_show_devname);
int nfs_show_path(struct seq_file *m, struct dentry *dentry)
{
seq_puts(m, "/");
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_show_path);
/*
* Present statistical information for this VFS mountpoint
seq_printf(m, ",bsize=%u", nfss->bsize);
seq_printf(m, ",namlen=%u", nfss->namelen);
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
if (nfss->nfs_client->rpc_ops->version == 4) {
seq_printf(m, "\n\tnfsv4:\t");
seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_show_stats);
/*
* Begin unmount by attempting to remove all automounted mountpoints we added
if (!IS_ERR(rpc))
rpc_killall_tasks(rpc);
}
+EXPORT_SYMBOL_GPL(nfs_umount_begin);
static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
{
return nfs_walk_authlist(args, &request);
}
-static struct dentry *nfs_try_mount(int flags, const char *dev_name,
- struct nfs_mount_info *mount_info)
+struct dentry *nfs_try_mount(int flags, const char *dev_name,
+ struct nfs_mount_info *mount_info,
+ struct nfs_subversion *nfs_mod)
{
int status;
struct nfs_server *server;
}
/* Get a volume representation */
- server = nfs_create_server(mount_info->parsed, mount_info->mntfh);
+ server = nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
if (IS_ERR(server))
return ERR_CAST(server);
- return nfs_fs_mount_common(&nfs_fs_type, server, flags, dev_name, mount_info);
+ return nfs_fs_mount_common(server, flags, dev_name, mount_info, nfs_mod);
}
+EXPORT_SYMBOL_GPL(nfs_try_mount);
/*
* Split "dev_name" into "hostname:export_path".
return NFS_TEXT_DATA;
}
-#ifndef CONFIG_NFS_V3
+#if !IS_ENABLED(CONFIG_NFS_V3)
if (args->version == 3)
goto out_v3_not_compiled;
#endif /* !CONFIG_NFS_V3 */
dfprintk(MOUNT, "NFS: nfs_mount_data version supports only AUTH_SYS\n");
return -EINVAL;
-#ifndef CONFIG_NFS_V3
+#if !IS_ENABLED(CONFIG_NFS_V3)
out_v3_not_compiled:
dfprintk(MOUNT, "NFS: NFSv3 is not compiled into kernel\n");
return -EPROTONOSUPPORT;
return -EINVAL;
}
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
static int nfs_validate_mount_data(struct file_system_type *fs_type,
void *options,
struct nfs_parsed_mount_data *args,
goto out_no_address;
if (args->version == 4) {
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
port = NFS_PORT;
max_namelen = NFS4_MAXNAMLEN;
max_pathlen = NFS4_MAXPATHLEN;
&args->nfs_server.export_path,
max_pathlen);
-#ifndef CONFIG_NFS_V4
+#if !IS_ENABLED(CONFIG_NFS_V4)
out_v4_not_compiled:
dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n");
return -EPROTONOSUPPORT;
kfree(data);
return error;
}
+EXPORT_SYMBOL_GPL(nfs_remount);
/*
* Initialise the common bits of the superblock
sb->s_blocksize_bits = 0;
sb->s_blocksize = 0;
- if (data->bsize)
+ sb->s_xattr = server->nfs_client->cl_nfs_mod->xattr;
+ sb->s_op = server->nfs_client->cl_nfs_mod->sops;
+ if (data && data->bsize)
sb->s_blocksize = nfs_block_size(data->bsize, &sb->s_blocksize_bits);
- if (server->nfs_client->rpc_ops->version == 3) {
+ if (server->nfs_client->rpc_ops->version != 2) {
/* The VFS shouldn't apply the umask to mode bits. We will do
* so ourselves when necessary.
*/
sb->s_time_gran = 1;
}
- sb->s_op = &nfs_sops;
nfs_initialise_sb(sb);
}
+EXPORT_SYMBOL_GPL(nfs_fill_super);
/*
* Finish setting up a cloned NFS2/3/4 superblock
{
return security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts);
}
+EXPORT_SYMBOL_GPL(nfs_set_sb_security);
int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
struct nfs_mount_info *mount_info)
return -ESTALE;
return 0;
}
+EXPORT_SYMBOL_GPL(nfs_clone_sb_security);
-struct dentry *nfs_fs_mount_common(struct file_system_type *fs_type,
- struct nfs_server *server,
+struct dentry *nfs_fs_mount_common(struct nfs_server *server,
int flags, const char *dev_name,
- struct nfs_mount_info *mount_info)
+ struct nfs_mount_info *mount_info,
+ struct nfs_subversion *nfs_mod)
{
struct super_block *s;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
sb_mntdata.mntflags |= MS_SYNCHRONOUS;
/* Get a superblock - note that we may end up sharing one that already exists */
- s = sget(fs_type, compare_super, nfs_set_super, flags, &sb_mntdata);
+ s = sget(nfs_mod->nfs_fs, compare_super, nfs_set_super, flags, &sb_mntdata);
if (IS_ERR(s)) {
mntroot = ERR_CAST(s);
goto out_err_nosb;
deactivate_locked_super(s);
goto out;
}
+EXPORT_SYMBOL_GPL(nfs_fs_mount_common);
struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
.set_security = nfs_set_sb_security,
};
struct dentry *mntroot = ERR_PTR(-ENOMEM);
+ struct nfs_subversion *nfs_mod;
int error;
mount_info.parsed = nfs_alloc_parsed_mount_data();
goto out;
}
-#ifdef CONFIG_NFS_V4
- if (mount_info.parsed->version == 4)
- mntroot = nfs4_try_mount(flags, dev_name, &mount_info);
- else
-#endif /* CONFIG_NFS_V4 */
- mntroot = nfs_try_mount(flags, dev_name, &mount_info);
+ nfs_mod = get_nfs_version(mount_info.parsed->version);
+ if (IS_ERR(nfs_mod)) {
+ mntroot = ERR_CAST(nfs_mod);
+ goto out;
+ }
+ mntroot = nfs_mod->rpc_ops->try_mount(flags, dev_name, &mount_info, nfs_mod);
+
+ put_nfs_version(nfs_mod);
out:
nfs_free_parsed_mount_data(mount_info.parsed);
nfs_free_fhandle(mount_info.mntfh);
return mntroot;
}
+EXPORT_SYMBOL_GPL(nfs_fs_mount);
/*
* Ensure that we unregister the bdi before kill_anon_super
bdi_unregister(&server->backing_dev_info);
}
+EXPORT_SYMBOL_GPL(nfs_put_super);
/*
* Destroy an NFS2/3 superblock
nfs_fscache_release_super_cookie(s);
nfs_free_server(server);
}
+EXPORT_SYMBOL_GPL(nfs_kill_super);
/*
* Clone an NFS2/3/4 server record on xdev traversal (FSID-change)
*/
struct dentry *
-nfs_xdev_mount_common(struct file_system_type *fs_type, int flags,
- const char *dev_name, struct nfs_mount_info *mount_info)
+nfs_xdev_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *raw_data)
{
- struct nfs_clone_mount *data = mount_info->cloned;
+ struct nfs_clone_mount *data = raw_data;
+ struct nfs_mount_info mount_info = {
+ .fill_super = nfs_clone_super,
+ .set_security = nfs_clone_sb_security,
+ .cloned = data,
+ };
struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
+ struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod;
int error;
dprintk("--> nfs_xdev_mount_common()\n");
- mount_info->mntfh = data->fh;
+ mount_info.mntfh = mount_info.cloned->fh;
/* create a new volume representation */
- server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
+ server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
if (IS_ERR(server)) {
error = PTR_ERR(server);
goto out_err;
}
- mntroot = nfs_fs_mount_common(fs_type, server, flags, dev_name, mount_info);
+ mntroot = nfs_fs_mount_common(server, flags, dev_name, &mount_info, nfs_mod);
dprintk("<-- nfs_xdev_mount_common() = 0\n");
out:
return mntroot;
goto out;
}
-/*
- * Clone an NFS2/3 server record on xdev traversal (FSID-change)
- */
-static struct dentry *
-nfs_xdev_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *raw_data)
-{
- struct nfs_mount_info mount_info = {
- .fill_super = nfs_clone_super,
- .set_security = nfs_clone_sb_security,
- .cloned = raw_data,
- };
- return nfs_xdev_mount_common(&nfs_fs_type, flags, dev_name, &mount_info);
-}
-
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
{
return -EINVAL;
}
+/*
+ * NFS v4 module parameters need to stay in the
+ * NFS client for backwards compatibility
+ */
+unsigned int nfs_callback_set_tcpport;
+unsigned short nfs_callback_tcpport;
+/* Default cache timeout is 10 minutes */
+unsigned int nfs_idmap_cache_timeout = 600;
+/* Turn off NFSv4 uid/gid mapping when using AUTH_SYS */
+bool nfs4_disable_idmapping = true;
+unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE;
+unsigned short send_implementation_id = 1;
+
+EXPORT_SYMBOL_GPL(nfs_callback_set_tcpport);
+EXPORT_SYMBOL_GPL(nfs_callback_tcpport);
+EXPORT_SYMBOL_GPL(nfs_idmap_cache_timeout);
+EXPORT_SYMBOL_GPL(nfs4_disable_idmapping);
+EXPORT_SYMBOL_GPL(max_session_slots);
+EXPORT_SYMBOL_GPL(send_implementation_id);
+
+#define NFS_CALLBACK_MAXPORTNR (65535U)
+
+static int param_set_portnr(const char *val, const struct kernel_param *kp)
+{
+ unsigned long num;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+ ret = strict_strtoul(val, 0, &num);
+ if (ret == -EINVAL || num > NFS_CALLBACK_MAXPORTNR)
+ return -EINVAL;
+ *((unsigned int *)kp->arg) = num;
+ return 0;
+}
+static struct kernel_param_ops param_ops_portnr = {
+ .set = param_set_portnr,
+ .get = param_get_uint,
+};
+#define param_check_portnr(name, p) __param_check(name, p, unsigned int);
+
+module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644);
+module_param(nfs_idmap_cache_timeout, int, 0644);
+module_param(nfs4_disable_idmapping, bool, 0644);
+MODULE_PARM_DESC(nfs4_disable_idmapping,
+ "Turn off NFSv4 idmapping when using 'sec=sys'");
+module_param(max_session_slots, ushort, 0644);
+MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 "
+ "requests the client will negotiate");
+module_param(send_implementation_id, ushort, 0644);
+MODULE_PARM_DESC(send_implementation_id,
+ "Send implementation ID with NFSv4.1 exchange_id");
#endif /* CONFIG_NFS_V4 */
}
return p;
}
+EXPORT_SYMBOL_GPL(nfs_writehdr_alloc);
static struct nfs_write_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header);
mempool_free(whdr, nfs_wdata_mempool);
}
+EXPORT_SYMBOL_GPL(nfs_writehdr_free);
void nfs_writedata_release(struct nfs_write_data *wdata)
{
if (atomic_dec_and_test(&hdr->refcnt))
hdr->completion_ops->completion(hdr);
}
+EXPORT_SYMBOL_GPL(nfs_writedata_release);
static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error)
{
__set_page_dirty_nobuffers(req->wb_page);
}
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
/**
* nfs_request_add_commit_list - add request to a commit list
* @req: pointer to a struct nfs_page
hdr->release(hdr);
}
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static unsigned long
nfs_reqs_to_commit(struct nfs_commit_info *cinfo)
{
return nfs_flush_multi(desc, hdr);
return nfs_flush_one(desc, hdr);
}
+EXPORT_SYMBOL_GPL(nfs_generic_flush);
static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
{
nfs_pageio_init(pgio, inode, &nfs_pageio_write_ops, compl_ops,
NFS_SERVER(inode)->wsize, ioflags);
}
+EXPORT_SYMBOL_GPL(nfs_pageio_init_write);
void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
{
return;
nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, resp->count);
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
if (resp->verf->committed < argp->stable && task->tk_status >= 0) {
/* We tried a write call, but the server did not
* commit data to stable storage even though we
}
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
{
int ret;
{
return nfs_commit_unstable_pages(inode, wbc);
}
-
-#ifdef CONFIG_NFS_V4
-int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
-{
- int ret = nfs_write_inode(inode, wbc);
-
- if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
- int status;
- bool sync = true;
-
- if (wbc->sync_mode == WB_SYNC_NONE)
- sync = false;
-
- status = pnfs_layoutcommit_inode(inode, sync);
- if (status < 0)
- return status;
- }
- return ret;
-}
-#endif
+EXPORT_SYMBOL_GPL(nfs_write_inode);
/*
* flush the inode to disk.
return sync_inode(inode, &wbc);
}
+EXPORT_SYMBOL_GPL(nfs_wb_all);
int nfs_wb_page_cancel(struct inode *inode, struct page *page)
{
struct hlist_head silly_list;
wait_queue_head_t waitqueue;
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
struct nfs4_cached_acl *nfs4_acl;
/* NFSv4 state */
struct list_head open_states;
* linux/fs/nfs/file.c
*/
extern const struct file_operations nfs_file_operations;
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
extern const struct file_operations nfs4_file_operations;
#endif /* CONFIG_NFS_V4 */
extern const struct address_space_operations nfs_file_aops;
extern int nfs_wb_all(struct inode *inode);
extern int nfs_wb_page(struct inode *inode, struct page* page);
extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
extern int nfs_commit_inode(struct inode *, int);
extern struct nfs_commit_data *nfs_commitdata_alloc(void);
extern void nfs_commit_free(struct nfs_commit_data *data);
struct rpc_clnt * cl_rpcclient;
const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
int cl_proto; /* Network transport protocol */
+ struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */
u32 cl_minorversion;/* NFSv4 minorversion */
struct rpc_cred *cl_machine_cred;
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
u64 cl_clientid; /* constant */
nfs4_verifier cl_confirm; /* Clientid verifier */
unsigned long cl_state;
#endif
u32 pnfs_blksize; /* layout_blksize attr */
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
u32 attr_bitmask[3];/* V4 bitmask representing the set
of attributes supported on this
filesystem */
#define NFS4_MAX_SLOT_TABLE (256U)
#define NFS4_NO_SLOT ((u32)-1)
-#if defined(CONFIG_NFS_V4)
+#if IS_ENABLED(CONFIG_NFS_V4)
/* Sessions */
#define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long))
struct nfs_fattr;
struct nfs4_string;
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
int nfs_idmap_init(void);
void nfs_idmap_quit(void);
#else
struct posix_acl * acl_default;
};
-#ifdef CONFIG_NFS_V4
+#if IS_ENABLED(CONFIG_NFS_V4)
typedef u64 clientid4;
struct nfs_access_entry;
struct nfs_client;
struct rpc_timeout;
+struct nfs_subversion;
+struct nfs_mount_info;
struct nfs_client_initdata;
struct nfs_pageio_descriptor;
struct nfs_fsinfo *);
struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
struct nfs_fh *, struct nfs_fattr *);
+ struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
+ struct nfs_subversion *);
int (*getattr) (struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *);
int (*setattr) (struct dentry *, struct nfs_fattr *,
(*init_client) (struct nfs_client *, const struct rpc_timeout *,
const char *, rpc_authflavor_t);
void (*free_client) (struct nfs_client *);
+ struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
+ struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
+ struct nfs_fattr *, rpc_authflavor_t);
};
/*
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create AF_LOCAL rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
- result = -PTR_ERR(clnt);
+ result = PTR_ERR(clnt);
goto out;
}
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create local rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
- result = -PTR_ERR(clnt);
+ result = PTR_ERR(clnt);
goto out;
}
/*
* Make an RPC task runnable.
*
- * Note: If the task is ASYNC, this must be called with
- * the spinlock held to protect the wait queue operation.
+ * Note: If the task is ASYNC, and is being made runnable after sitting on an
+ * rpc_wait_queue, this must be called with the queue spinlock held to protect
+ * the wait queue operation.
*/
static void rpc_make_runnable(struct rpc_task *task)
{
static void rpc_async_schedule(struct work_struct *work)
{
+ current->flags |= PF_FSTRANS;
__rpc_execute(container_of(work, struct rpc_task, u.tk_work));
+ current->flags &= ~PF_FSTRANS;
}
/**
int rc = 0;
if (!xprt->shutdown) {
+ current->flags |= PF_FSTRANS;
xprt_clear_connected(xprt);
dprintk("RPC: %s: %sconnect\n", __func__,
out:
xprt_wake_pending_tasks(xprt, rc);
-
out_clear:
dprintk("RPC: %s: exit\n", __func__);
xprt_clear_connecting(xprt);
+ current->flags &= ~PF_FSTRANS;
}
/*
if (xprt->shutdown)
goto out;
+ current->flags |= PF_FSTRANS;
+
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
status = __sock_create(xprt->xprt_net, AF_LOCAL,
SOCK_STREAM, 0, &sock, 1);
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
+ current->flags &= ~PF_FSTRANS;
}
static void xs_udp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
if (xprt->shutdown)
goto out;
+ current->flags |= PF_FSTRANS;
+
/* Start by resetting any existing state */
xs_reset_transport(transport);
sock = xs_create_sock(xprt, transport,
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
+ current->flags &= ~PF_FSTRANS;
}
/*
if (xprt->shutdown)
goto out;
+ current->flags |= PF_FSTRANS;
+
if (!sock) {
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
sock = xs_create_sock(xprt, transport,
case -EINPROGRESS:
case -EALREADY:
xprt_clear_connecting(xprt);
+ current->flags &= ~PF_FSTRANS;
return;
case -EINVAL:
/* Happens, for instance, if the user specified a link
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
+ current->flags &= ~PF_FSTRANS;
}
/**
projects / karo-tx-linux.git / commitdiff