The default is to return 64-bit inode numbers.
nfs.nfs4_disable_idmapping=
- [NFSv4] When set, this option disables the NFSv4
- idmapper on the client, but only if the mount
- is using the 'sec=sys' security flavour. This may
- make migration from legacy NFSv2/v3 systems easier
- provided that the server has the appropriate support.
- The default is to always enable NFSv4 idmapping.
+ [NFSv4] When set to the default of '1', this option
+ ensures that both the RPC level authentication
+ scheme and the NFS level operations agree to use
+ numeric uids/gids if the mount is using the
+ 'sec=sys' security flavour. In effect it is
+ disabling idmapping, which can make migration from
+ legacy NFSv2/v3 systems to NFSv4 easier.
+ Servers that do not support this mode of operation
+ will be autodetected by the client, and it will fall
+ back to using the idmapper.
+ To turn off this behaviour, set the value to '0'.
nmi_debug= [KNL,AVR32,SH] Specify one or more actions to take
when a NMI is triggered.
dprintk("%s enter. slotid %d seqid %d\n",
__func__, args->csa_slotid, args->csa_sequenceid);
- if (args->csa_slotid > NFS41_BC_MAX_CALLBACKS)
+ if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS)
return htonl(NFS4ERR_BADSLOT);
slot = tbl->slots + args->csa_slotid;
/*
* Turn off NFSv4 uid/gid mapping when using AUTH_SYS
*/
-static int nfs4_disable_idmapping = 0;
+static int nfs4_disable_idmapping = 1;
/*
* RPC cruft for NFS
clp->cl_minorversion = cl_init->minorversion;
clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
#endif
- cred = rpc_lookup_machine_cred();
+ cred = rpc_lookup_machine_cred("*");
if (!IS_ERR(cred))
clp->cl_machine_cred = cred;
nfs_fscache_get_client_cookie(clp);
rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");
}
+static void nfs4_destroy_server(struct nfs_server *server)
+{
+ nfs4_purge_state_owners(server);
+}
+
#else
static void nfs4_shutdown_client(struct nfs_client *clp)
{
INIT_LIST_HEAD(&server->master_link);
INIT_LIST_HEAD(&server->delegations);
INIT_LIST_HEAD(&server->layouts);
+ INIT_LIST_HEAD(&server->state_owners_lru);
atomic_set(&server->active, 0);
nfs_server_insert_lists(server);
server->mount_time = jiffies;
+ server->destroy = nfs4_destroy_server;
out:
nfs_free_fattr(fattr);
return error;
/* Copy data from the source */
server->nfs_client = source->nfs_client;
+ server->destroy = source->destroy;
atomic_inc(&server->nfs_client->cl_count);
nfs_server_copy_userdata(server, source);
datasync);
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
- if (ret)
- return ret;
mutex_lock(&inode->i_mutex);
nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
have_error = test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);
status = nfs_commit_inode(inode, FLUSH_SYNC);
+ if (status >= 0 && ret < 0)
+ status = ret;
have_error |= test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);
if (have_error)
ret = xchg(&ctx->error, 0);
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/nfs_idmap.h>
+#include <linux/nfs_fs.h>
+
+/**
+ * nfs_fattr_init_names - initialise the nfs_fattr owner_name/group_name fields
+ * @fattr: fully initialised struct nfs_fattr
+ * @owner_name: owner name string cache
+ * @group_name: group name string cache
+ */
+void nfs_fattr_init_names(struct nfs_fattr *fattr,
+ struct nfs4_string *owner_name,
+ struct nfs4_string *group_name)
+{
+ fattr->owner_name = owner_name;
+ fattr->group_name = group_name;
+}
+
+static void nfs_fattr_free_owner_name(struct nfs_fattr *fattr)
+{
+ fattr->valid &= ~NFS_ATTR_FATTR_OWNER_NAME;
+ kfree(fattr->owner_name->data);
+}
+
+static void nfs_fattr_free_group_name(struct nfs_fattr *fattr)
+{
+ fattr->valid &= ~NFS_ATTR_FATTR_GROUP_NAME;
+ kfree(fattr->group_name->data);
+}
+
+static bool nfs_fattr_map_owner_name(struct nfs_server *server, struct nfs_fattr *fattr)
+{
+ struct nfs4_string *owner = fattr->owner_name;
+ __u32 uid;
+
+ if (!(fattr->valid & NFS_ATTR_FATTR_OWNER_NAME))
+ return false;
+ if (nfs_map_name_to_uid(server, owner->data, owner->len, &uid) == 0) {
+ fattr->uid = uid;
+ fattr->valid |= NFS_ATTR_FATTR_OWNER;
+ }
+ return true;
+}
+
+static bool nfs_fattr_map_group_name(struct nfs_server *server, struct nfs_fattr *fattr)
+{
+ struct nfs4_string *group = fattr->group_name;
+ __u32 gid;
+
+ if (!(fattr->valid & NFS_ATTR_FATTR_GROUP_NAME))
+ return false;
+ if (nfs_map_group_to_gid(server, group->data, group->len, &gid) == 0) {
+ fattr->gid = gid;
+ fattr->valid |= NFS_ATTR_FATTR_GROUP;
+ }
+ return true;
+}
+
+/**
+ * nfs_fattr_free_names - free up the NFSv4 owner and group strings
+ * @fattr: a fully initialised nfs_fattr structure
+ */
+void nfs_fattr_free_names(struct nfs_fattr *fattr)
+{
+ if (fattr->valid & NFS_ATTR_FATTR_OWNER_NAME)
+ nfs_fattr_free_owner_name(fattr);
+ if (fattr->valid & NFS_ATTR_FATTR_GROUP_NAME)
+ nfs_fattr_free_group_name(fattr);
+}
+
+/**
+ * nfs_fattr_map_and_free_names - map owner/group strings into uid/gid and free
+ * @server: pointer to the filesystem nfs_server structure
+ * @fattr: a fully initialised nfs_fattr structure
+ *
+ * This helper maps the cached NFSv4 owner/group strings in fattr into
+ * their numeric uid/gid equivalents, and then frees the cached strings.
+ */
+void nfs_fattr_map_and_free_names(struct nfs_server *server, struct nfs_fattr *fattr)
+{
+ if (nfs_fattr_map_owner_name(server, fattr))
+ nfs_fattr_free_owner_name(fattr);
+ if (nfs_fattr_map_group_name(server, fattr))
+ nfs_fattr_free_group_name(fattr);
+}
static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res)
{
fattr->valid = 0;
fattr->time_start = jiffies;
fattr->gencount = nfs_inc_attr_generation_counter();
+ fattr->owner_name = NULL;
+ fattr->group_name = NULL;
}
struct nfs_fattr *nfs_alloc_fattr(void)
/* write.c */
extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
struct list_head *head);
+extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
+ struct inode *inode, int ioflags);
extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio);
extern void nfs_writedata_release(struct nfs_write_data *wdata);
extern void nfs_commit_free(struct nfs_write_data *p);
struct nfs4_state_owner {
struct nfs_unique_id so_owner_id;
struct nfs_server *so_server;
+ struct list_head so_lru;
+ unsigned long so_expires;
struct rb_node so_server_node;
struct rpc_cred *so_cred; /* Associated cred */
extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
extern void nfs4_put_state_owner(struct nfs4_state_owner *);
+extern void nfs4_purge_state_owners(struct nfs_server *);
extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
extern void nfs4_put_open_state(struct nfs4_state *);
extern void nfs4_close_state(struct nfs4_state *, fmode_t);
loff_t offset)
{
u32 stripe_width = flseg->stripe_unit * flseg->dsaddr->stripe_count;
- u64 tmp;
+ u64 stripe_no;
+ u32 rem;
offset -= flseg->pattern_offset;
- tmp = offset;
- do_div(tmp, stripe_width);
+ stripe_no = div_u64(offset, stripe_width);
+ div_u64_rem(offset, flseg->stripe_unit, &rem);
- return tmp * flseg->stripe_unit + do_div(offset, flseg->stripe_unit);
+ return stripe_no * flseg->stripe_unit + rem;
}
/* This function is used by the layout driver to calculate the
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/module.h>
+#include <linux/nfs_idmap.h>
#include <linux/sunrpc/bc_xprt.h>
#include <linux/xattr.h>
#include <linux/utsname.h>
* Must be called while holding tbl->slot_tbl_lock
*/
static void
-nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
+nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
{
- int free_slotid = free_slot - tbl->slots;
int slotid = free_slotid;
BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
}
spin_lock(&tbl->slot_tbl_lock);
- nfs4_free_slot(tbl, res->sr_slot);
+ nfs4_free_slot(tbl, res->sr_slot - tbl->slots);
nfs4_check_drain_fc_complete(res->sr_session);
spin_unlock(&tbl->slot_tbl_lock);
res->sr_slot = NULL;
spin_lock(&tbl->slot_tbl_lock);
if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) &&
!rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
- /*
- * The state manager will wait until the slot table is empty.
- * Schedule the reset thread
- */
+ /* The state manager will wait until the slot table is empty */
rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
spin_unlock(&tbl->slot_tbl_lock);
- dprintk("%s Schedule Session Reset\n", __func__);
+ dprintk("%s session is draining\n", __func__);
return -EAGAIN;
}
struct nfs_openres o_res;
struct nfs_open_confirmargs c_arg;
struct nfs_open_confirmres c_res;
+ struct nfs4_string owner_name;
+ struct nfs4_string group_name;
struct nfs_fattr f_attr;
struct nfs_fattr dir_attr;
struct dentry *dir;
p->o_res.server = p->o_arg.server;
nfs_fattr_init(&p->f_attr);
nfs_fattr_init(&p->dir_attr);
+ nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
p->o_arg.name = &dentry->d_name;
p->o_arg.server = server;
p->o_arg.bitmask = server->attr_bitmask;
+ p->o_arg.dir_bitmask = server->cache_consistency_bitmask;
p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
if (flags & O_CREAT) {
u32 *s;
dput(p->dir);
dput(p->dentry);
nfs_sb_deactive(sb);
+ nfs_fattr_free_names(&p->f_attr);
kfree(p);
}
if (status != 0 || !data->rpc_done)
return status;
+ nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);
+
nfs_refresh_inode(dir, o_res->dir_attr);
if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
return status;
}
+ nfs_fattr_map_and_free_names(server, &data->f_attr);
+
if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
nfs_post_op_update_inode(dir, o_res->dir_attr);
*/
#define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
-static void buf_to_pages(const void *buf, size_t buflen,
- struct page **pages, unsigned int *pgbase)
-{
- const void *p = buf;
-
- *pgbase = offset_in_page(buf);
- p -= *pgbase;
- while (p < buf + buflen) {
- *(pages++) = virt_to_page(p);
- p += PAGE_CACHE_SIZE;
- }
-}
-
static int buf_to_pages_noslab(const void *buf, size_t buflen,
struct page **pages, unsigned int *pgbase)
{
nfs4_set_cached_acl(inode, acl);
}
+/*
+ * The getxattr API returns the required buffer length when called with a
+ * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
+ * the required buf. On a NULL buf, we send a page of data to the server
+ * guessing that the ACL request can be serviced by a page. If so, we cache
+ * up to the page of ACL data, and the 2nd call to getxattr is serviced by
+ * the cache. If not so, we throw away the page, and cache the required
+ * length. The next getxattr call will then produce another round trip to
+ * the server, this time with the input buf of the required size.
+ */
static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
- struct page *pages[NFS4ACL_MAXPAGES];
+ struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
struct nfs_getaclargs args = {
.fh = NFS_FH(inode),
.acl_pages = pages,
.rpc_argp = &args,
.rpc_resp = &res,
};
- struct page *localpage = NULL;
- int ret;
+ int ret = -ENOMEM, npages, i, acl_len = 0;
- if (buflen < PAGE_SIZE) {
- /* As long as we're doing a round trip to the server anyway,
- * let's be prepared for a page of acl data. */
- localpage = alloc_page(GFP_KERNEL);
- resp_buf = page_address(localpage);
- if (localpage == NULL)
- return -ENOMEM;
- args.acl_pages[0] = localpage;
- args.acl_pgbase = 0;
- args.acl_len = PAGE_SIZE;
- } else {
- resp_buf = buf;
- buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
+ npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ /* As long as we're doing a round trip to the server anyway,
+ * let's be prepared for a page of acl data. */
+ if (npages == 0)
+ npages = 1;
+
+ for (i = 0; i < npages; i++) {
+ pages[i] = alloc_page(GFP_KERNEL);
+ if (!pages[i])
+ goto out_free;
}
- ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
+ if (npages > 1) {
+ /* for decoding across pages */
+ args.acl_scratch = alloc_page(GFP_KERNEL);
+ if (!args.acl_scratch)
+ goto out_free;
+ }
+ args.acl_len = npages * PAGE_SIZE;
+ args.acl_pgbase = 0;
+ /* Let decode_getfacl know not to fail if the ACL data is larger than
+ * the page we send as a guess */
+ if (buf == NULL)
+ res.acl_flags |= NFS4_ACL_LEN_REQUEST;
+ resp_buf = page_address(pages[0]);
+
+ dprintk("%s buf %p buflen %ld npages %d args.acl_len %ld\n",
+ __func__, buf, buflen, npages, args.acl_len);
+ ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
+ &msg, &args.seq_args, &res.seq_res, 0);
if (ret)
goto out_free;
- if (res.acl_len > args.acl_len)
- nfs4_write_cached_acl(inode, NULL, res.acl_len);
+
+ acl_len = res.acl_len - res.acl_data_offset;
+ if (acl_len > args.acl_len)
+ nfs4_write_cached_acl(inode, NULL, acl_len);
else
- nfs4_write_cached_acl(inode, resp_buf, res.acl_len);
+ nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset,
+ acl_len);
if (buf) {
ret = -ERANGE;
- if (res.acl_len > buflen)
+ if (acl_len > buflen)
goto out_free;
- if (localpage)
- memcpy(buf, resp_buf, res.acl_len);
+ _copy_from_pages(buf, pages, res.acl_data_offset,
+ res.acl_len);
}
- ret = res.acl_len;
+ ret = acl_len;
out_free:
- if (localpage)
- __free_page(localpage);
+ for (i = 0; i < npages; i++)
+ if (pages[i])
+ __free_page(pages[i]);
+ if (args.acl_scratch)
+ __free_page(args.acl_scratch);
return ret;
}
nfs_zap_acl_cache(inode);
ret = nfs4_read_cached_acl(inode, buf, buflen);
if (ret != -ENOENT)
+ /* -ENOENT is returned if there is no ACL or if there is an ACL
+ * but no cached acl data, just the acl length */
return ret;
return nfs4_get_acl_uncached(inode, buf, buflen);
}
return ret;
}
-/*
- * Reset the forechannel and backchannel slot tables
- */
-static int nfs4_reset_slot_tables(struct nfs4_session *session)
-{
- int status;
-
- status = nfs4_reset_slot_table(&session->fc_slot_table,
- session->fc_attrs.max_reqs, 1);
- if (status)
- return status;
-
- status = nfs4_reset_slot_table(&session->bc_slot_table,
- session->bc_attrs.max_reqs, 0);
- return status;
-}
-
/* Destroy the slot table */
static void nfs4_destroy_slot_tables(struct nfs4_session *session)
{
}
/*
- * Initialize the forechannel and backchannel tables
+ * Initialize or reset the forechannel and backchannel tables
*/
-static int nfs4_init_slot_tables(struct nfs4_session *session)
+static int nfs4_setup_session_slot_tables(struct nfs4_session *ses)
{
struct nfs4_slot_table *tbl;
- int status = 0;
+ int status;
- tbl = &session->fc_slot_table;
+ dprintk("--> %s\n", __func__);
+ /* Fore channel */
+ tbl = &ses->fc_slot_table;
if (tbl->slots == NULL) {
- status = nfs4_init_slot_table(tbl,
- session->fc_attrs.max_reqs, 1);
+ status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1);
+ if (status) /* -ENOMEM */
+ return status;
+ } else {
+ status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1);
if (status)
return status;
}
-
- tbl = &session->bc_slot_table;
+ /* Back channel */
+ tbl = &ses->bc_slot_table;
if (tbl->slots == NULL) {
- status = nfs4_init_slot_table(tbl,
- session->bc_attrs.max_reqs, 0);
+ status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0);
if (status)
- nfs4_destroy_slot_tables(session);
- }
-
+ /* Fore and back channel share a connection so get
+ * both slot tables or neither */
+ nfs4_destroy_slot_tables(ses);
+ } else
+ status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0);
return status;
}
if (status)
goto out;
- /* Init and reset the fore channel */
- status = nfs4_init_slot_tables(session);
- dprintk("slot table initialization returned %d\n", status);
- if (status)
- goto out;
- status = nfs4_reset_slot_tables(session);
- dprintk("slot table reset returned %d\n", status);
+ /* Init or reset the session slot tables */
+ status = nfs4_setup_session_slot_tables(session);
+ dprintk("slot table setup returned %d\n", status);
if (status)
goto out;
#include <linux/ratelimit.h>
#include <linux/workqueue.h>
#include <linux/bitops.h>
+#include <linux/jiffies.h>
#include "nfs4_fs.h"
#include "callback.h"
{
struct rb_node **p = &server->state_owners.rb_node,
*parent = NULL;
- struct nfs4_state_owner *sp, *res = NULL;
+ struct nfs4_state_owner *sp;
while (*p != NULL) {
parent = *p;
sp = rb_entry(parent, struct nfs4_state_owner, so_server_node);
- if (server < sp->so_server) {
- p = &parent->rb_left;
- continue;
- }
- if (server > sp->so_server) {
- p = &parent->rb_right;
- continue;
- }
if (cred < sp->so_cred)
p = &parent->rb_left;
else if (cred > sp->so_cred)
p = &parent->rb_right;
else {
+ if (!list_empty(&sp->so_lru))
+ list_del_init(&sp->so_lru);
atomic_inc(&sp->so_count);
- res = sp;
- break;
+ return sp;
}
}
- return res;
+ return NULL;
}
static struct nfs4_state_owner *
else if (new->so_cred > sp->so_cred)
p = &parent->rb_right;
else {
+ if (!list_empty(&sp->so_lru))
+ list_del_init(&sp->so_lru);
atomic_inc(&sp->so_count);
return sp;
}
spin_lock_init(&sp->so_sequence.lock);
INIT_LIST_HEAD(&sp->so_sequence.list);
atomic_set(&sp->so_count, 1);
+ INIT_LIST_HEAD(&sp->so_lru);
return sp;
}
}
}
+static void nfs4_free_state_owner(struct nfs4_state_owner *sp)
+{
+ rpc_destroy_wait_queue(&sp->so_sequence.wait);
+ put_rpccred(sp->so_cred);
+ kfree(sp);
+}
+
+static void nfs4_gc_state_owners(struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+ struct nfs4_state_owner *sp, *tmp;
+ unsigned long time_min, time_max;
+ LIST_HEAD(doomed);
+
+ spin_lock(&clp->cl_lock);
+ time_max = jiffies;
+ time_min = (long)time_max - (long)clp->cl_lease_time;
+ list_for_each_entry_safe(sp, tmp, &server->state_owners_lru, so_lru) {
+ /* NB: LRU is sorted so that oldest is at the head */
+ if (time_in_range(sp->so_expires, time_min, time_max))
+ break;
+ list_move(&sp->so_lru, &doomed);
+ nfs4_remove_state_owner_locked(sp);
+ }
+ spin_unlock(&clp->cl_lock);
+
+ list_for_each_entry_safe(sp, tmp, &doomed, so_lru) {
+ list_del(&sp->so_lru);
+ nfs4_free_state_owner(sp);
+ }
+}
+
/**
* nfs4_get_state_owner - Look up a state owner given a credential
* @server: nfs_server to search
sp = nfs4_find_state_owner_locked(server, cred);
spin_unlock(&clp->cl_lock);
if (sp != NULL)
- return sp;
+ goto out;
new = nfs4_alloc_state_owner();
if (new == NULL)
- return NULL;
+ goto out;
new->so_server = server;
new->so_cred = cred;
spin_lock(&clp->cl_lock);
rpc_destroy_wait_queue(&new->so_sequence.wait);
kfree(new);
}
+out:
+ nfs4_gc_state_owners(server);
return sp;
}
/**
* nfs4_put_state_owner - Release a nfs4_state_owner
* @sp: state owner data to release
- *
*/
void nfs4_put_state_owner(struct nfs4_state_owner *sp)
{
- struct nfs_client *clp = sp->so_server->nfs_client;
- struct rpc_cred *cred = sp->so_cred;
+ struct nfs_server *server = sp->so_server;
+ struct nfs_client *clp = server->nfs_client;
if (!atomic_dec_and_lock(&sp->so_count, &clp->cl_lock))
return;
- nfs4_remove_state_owner_locked(sp);
+
+ if (!RB_EMPTY_NODE(&sp->so_server_node)) {
+ sp->so_expires = jiffies;
+ list_add_tail(&sp->so_lru, &server->state_owners_lru);
+ spin_unlock(&clp->cl_lock);
+ } else {
+ nfs4_remove_state_owner_locked(sp);
+ spin_unlock(&clp->cl_lock);
+ nfs4_free_state_owner(sp);
+ }
+}
+
+/**
+ * nfs4_purge_state_owners - Release all cached state owners
+ * @server: nfs_server with cached state owners to release
+ *
+ * Called at umount time. Remaining state owners will be on
+ * the LRU with ref count of zero.
+ */
+void nfs4_purge_state_owners(struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+ struct nfs4_state_owner *sp, *tmp;
+ LIST_HEAD(doomed);
+
+ spin_lock(&clp->cl_lock);
+ list_for_each_entry_safe(sp, tmp, &server->state_owners_lru, so_lru) {
+ list_move(&sp->so_lru, &doomed);
+ nfs4_remove_state_owner_locked(sp);
+ }
spin_unlock(&clp->cl_lock);
- rpc_destroy_wait_queue(&sp->so_sequence.wait);
- put_rpccred(cred);
- kfree(sp);
+
+ list_for_each_entry_safe(sp, tmp, &doomed, so_lru) {
+ list_del(&sp->so_lru);
+ nfs4_free_state_owner(sp);
+ }
}
static struct nfs4_state *
restart:
rcu_read_lock();
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ nfs4_purge_state_owners(server);
spin_lock(&clp->cl_lock);
for (pos = rb_first(&server->state_owners);
pos != NULL;
encode_getfh(xdr, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_restorefh(xdr, &hdr);
- encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_getfattr(xdr, args->dir_bitmask, &hdr);
encode_nops(&hdr);
}
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
- replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
+ replen = hdr.replen + op_decode_hdr_maxsz + 1;
encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
args->acl_pages, args->acl_pgbase, args->acl_len);
+ xdr_set_scratch_buffer(xdr, page_address(args->acl_scratch), PAGE_SIZE);
+
encode_nops(&hdr);
}
}
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
- const struct nfs_server *server, uint32_t *uid, int may_sleep)
+ const struct nfs_server *server, uint32_t *uid,
+ struct nfs4_string *owner_name)
{
uint32_t len;
__be32 *p;
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))
goto out_overflow;
- if (!may_sleep) {
- /* do nothing */
+ if (owner_name != NULL) {
+ owner_name->data = kmemdup(p, len, GFP_NOWAIT);
+ if (owner_name->data != NULL) {
+ owner_name->len = len;
+ ret = NFS_ATTR_FATTR_OWNER_NAME;
+ }
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
ret = NFS_ATTR_FATTR_OWNER;
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
- const struct nfs_server *server, uint32_t *gid, int may_sleep)
+ const struct nfs_server *server, uint32_t *gid,
+ struct nfs4_string *group_name)
{
uint32_t len;
__be32 *p;
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))
goto out_overflow;
- if (!may_sleep) {
- /* do nothing */
+ if (group_name != NULL) {
+ group_name->data = kmemdup(p, len, GFP_NOWAIT);
+ if (group_name->data != NULL) {
+ group_name->len = len;
+ ret = NFS_ATTR_FATTR_GROUP_NAME;
+ }
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
ret = NFS_ATTR_FATTR_GROUP;
static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
struct nfs_fattr *fattr, struct nfs_fh *fh,
- const struct nfs_server *server, int may_sleep)
+ const struct nfs_server *server)
{
int status;
umode_t fmode = 0;
goto xdr_error;
fattr->valid |= status;
- status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
+ status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
- status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
+ status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
}
static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
- struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
+ struct nfs_fh *fh, const struct nfs_server *server)
{
__be32 *savep;
uint32_t attrlen,
if (status < 0)
goto xdr_error;
- status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
+ status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server);
if (status < 0)
goto xdr_error;
}
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
- const struct nfs_server *server, int may_sleep)
+ const struct nfs_server *server)
{
- return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
+ return decode_getfattr_generic(xdr, fattr, NULL, server);
}
/*
}
static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
- size_t *acl_len)
+ struct nfs_getaclres *res)
{
- __be32 *savep;
+ __be32 *savep, *bm_p;
uint32_t attrlen,
bitmap[3] = {0};
struct kvec *iov = req->rq_rcv_buf.head;
int status;
- *acl_len = 0;
+ res->acl_len = 0;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto out;
+ bm_p = xdr->p;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto out;
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
size_t hdrlen;
u32 recvd;
+ /* The bitmap (xdr len + bitmaps) and the attr xdr len words
+ * are stored with the acl data to handle the problem of
+ * variable length bitmaps.*/
+ xdr->p = bm_p;
+ res->acl_data_offset = be32_to_cpup(bm_p) + 2;
+ res->acl_data_offset <<= 2;
+
/* We ignore &savep and don't do consistency checks on
* the attr length. Let userspace figure it out.... */
hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
+ attrlen += res->acl_data_offset;
recvd = req->rq_rcv_buf.len - hdrlen;
if (attrlen > recvd) {
- dprintk("NFS: server cheating in getattr"
- " acl reply: attrlen %u > recvd %u\n",
+ if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
+ /* getxattr interface called with a NULL buf */
+ res->acl_len = attrlen;
+ goto out;
+ }
+ dprintk("NFS: acl reply: attrlen %u > recvd %u\n",
attrlen, recvd);
return -EINVAL;
}
xdr_read_pages(xdr, attrlen);
- *acl_len = attrlen;
+ res->acl_len = attrlen;
} else
status = -EOPNOTSUPP;
status = decode_open_downgrade(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_access(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
- status = decode_getfattr(xdr, res->fattr, res->server
- ,!RPC_IS_ASYNC(rqstp->rq_task));
+ status = decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out;
status = decode_getfh(xdr, res->fh);
if (status == 0)
- status = decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ status = decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_remove(xdr, &res->cinfo);
if (status)
goto out;
- decode_getfattr(xdr, res->dir_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->dir_attr, res->server);
out:
return status;
}
if (status)
goto out;
/* Current FH is target directory */
- if (decode_getfattr(xdr, res->new_fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->new_fattr, res->server))
goto out;
status = decode_restorefh(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->old_fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->old_fattr, res->server);
out:
return status;
}
* Note order: OP_LINK leaves the directory as the current
* filehandle.
*/
- if (decode_getfattr(xdr, res->dir_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->dir_attr, res->server))
goto out;
status = decode_restorefh(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
- if (decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->fattr, res->server))
goto out;
status = decode_restorefh(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->dir_fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->dir_fattr, res->server);
out:
return status;
}
status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ status = decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getacl(xdr, rqstp, &res->acl_len);
+ status = decode_getacl(xdr, rqstp, res);
out:
return status;
* an ESTALE error. Shouldn't be a problem,
* though, since fattr->valid will remain unset.
*/
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out;
if (decode_getfh(xdr, &res->fh) != 0)
goto out;
- if (decode_getfattr(xdr, res->f_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->f_attr, res->server) != 0)
goto out;
if (decode_restorefh(xdr) != 0)
goto out;
- decode_getfattr(xdr, res->dir_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->dir_attr, res->server);
out:
return status;
}
status = decode_open(xdr, res);
if (status)
goto out;
- decode_getfattr(xdr, res->f_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->f_attr, res->server);
out:
return status;
}
status = decode_setattr(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
if (status)
goto out;
if (res->fattr)
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
if (!status)
status = res->count;
out:
if (status)
goto out;
if (res->fattr)
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_delegreturn(xdr);
if (status != 0)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out;
xdr_enter_page(xdr, PAGE_SIZE);
status = decode_getfattr(xdr, &res->fs_locations->fattr,
- res->fs_locations->server,
- !RPC_IS_ASYNC(req->rq_task));
+ res->fs_locations->server);
out:
return status;
}
status = decode_layoutcommit(xdr, rqstp, res);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out_overflow;
if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
- entry->server, 1) < 0)
+ entry->server) < 0)
goto out_overflow;
if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
entry->ino = entry->fattr->mounted_on_fileid;
static struct pnfs_layoutdriver_type objlayout_type = {
.id = LAYOUT_OSD2_OBJECTS,
.name = "LAYOUT_OSD2_OBJECTS",
- .flags = PNFS_LAYOUTRET_ON_SETATTR,
+ .flags = PNFS_LAYOUTRET_ON_SETATTR |
+ PNFS_LAYOUTRET_ON_ERROR,
.alloc_layout_hdr = objlayout_alloc_layout_hdr,
.free_layout_hdr = objlayout_free_layout_hdr,
oir->status = rdata->task.tk_status = status;
if (status >= 0)
rdata->res.count = status;
+ else
+ rdata->pnfs_error = status;
objlayout_iodone(oir);
/* must not use oir after this point */
if (status >= 0) {
wdata->res.count = status;
wdata->verf.committed = oir->committed;
+ } else {
+ wdata->pnfs_error = status;
}
objlayout_iodone(oir);
/* must not use oir after this point */
}
EXPORT_SYMBOL_GPL(pnfs_generic_pg_test);
+static int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *head)
+{
+ struct nfs_pageio_descriptor pgio;
+ LIST_HEAD(failed);
+
+ /* Resend all requests through the MDS */
+ nfs_pageio_init_write_mds(&pgio, inode, FLUSH_STABLE);
+ while (!list_empty(head)) {
+ struct nfs_page *req = nfs_list_entry(head->next);
+
+ nfs_list_remove_request(req);
+ if (!nfs_pageio_add_request(&pgio, req))
+ nfs_list_add_request(req, &failed);
+ }
+ nfs_pageio_complete(&pgio);
+
+ if (!list_empty(&failed)) {
+ /* For some reason our attempt to resend pages. Mark the
+ * overall send request as having failed, and let
+ * nfs_writeback_release_full deal with the error.
+ */
+ list_move(&failed, head);
+ return -EIO;
+ }
+ return 0;
+}
+
/*
* Called by non rpc-based layout drivers
*/
pnfs_set_layoutcommit(data);
data->mds_ops->rpc_call_done(&data->task, data);
} else {
- put_lseg(data->lseg);
- data->lseg = NULL;
dprintk("pnfs write error = %d\n", data->pnfs_error);
+ if (NFS_SERVER(data->inode)->pnfs_curr_ld->flags &
+ PNFS_LAYOUTRET_ON_ERROR) {
+ /* Don't lo_commit on error, Server will needs to
+ * preform a file recovery.
+ */
+ clear_bit(NFS_INO_LAYOUTCOMMIT,
+ &NFS_I(data->inode)->flags);
+ pnfs_return_layout(data->inode);
+ }
+ data->task.tk_status = pnfs_write_done_resend_to_mds(data->inode, &data->pages);
}
data->mds_ops->rpc_release(data);
}
put_lseg(data->lseg);
data->lseg = NULL;
dprintk("pnfs write error = %d\n", data->pnfs_error);
+ if (NFS_SERVER(data->inode)->pnfs_curr_ld->flags &
+ PNFS_LAYOUTRET_ON_ERROR)
+ pnfs_return_layout(data->inode);
nfs_pageio_init_read_mds(&pgio, data->inode);
enum layoutdriver_policy_flags {
/* Should the pNFS client commit and return the layout upon a setattr */
PNFS_LAYOUTRET_ON_SETATTR = 1 << 0,
+ PNFS_LAYOUTRET_ON_ERROR = 1 << 1,
};
struct nfs4_deviceid_node;
data->auth_flavor_len = 1;
data->version = version;
data->minorversion = 0;
+ security_init_mnt_opts(&data->lsm_opts);
}
return data;
}
+static void nfs_free_parsed_mount_data(struct nfs_parsed_mount_data *data)
+{
+ if (data) {
+ kfree(data->client_address);
+ kfree(data->mount_server.hostname);
+ kfree(data->nfs_server.export_path);
+ kfree(data->nfs_server.hostname);
+ kfree(data->fscache_uniq);
+ security_free_mnt_opts(&data->lsm_opts);
+ kfree(data);
+ }
+}
+
/*
* Sanity-check a server address provided by the mount command.
*
data = nfs_alloc_parsed_mount_data(NFS_DEFAULT_VERSION);
mntfh = nfs_alloc_fhandle();
if (data == NULL || mntfh == NULL)
- goto out_free_fh;
-
- security_init_mnt_opts(&data->lsm_opts);
+ goto out;
/* Validate the mount data */
error = nfs_validate_mount_data(raw_data, data, mntfh, dev_name);
#ifdef CONFIG_NFS_V4
if (data->version == 4) {
mntroot = nfs4_try_mount(flags, dev_name, data);
- kfree(data->client_address);
- kfree(data->nfs_server.export_path);
goto out;
}
#endif /* CONFIG_NFS_V4 */
s->s_flags |= MS_ACTIVE;
out:
- kfree(data->nfs_server.hostname);
- kfree(data->mount_server.hostname);
- kfree(data->fscache_uniq);
- security_free_mnt_opts(&data->lsm_opts);
-out_free_fh:
+ nfs_free_parsed_mount_data(data);
nfs_free_fhandle(mntfh);
- kfree(data);
return mntroot;
out_err_nosb:
mntfh = nfs_alloc_fhandle();
if (data == NULL || mntfh == NULL)
- goto out_free_fh;
-
- security_init_mnt_opts(&data->lsm_opts);
+ goto out;
/* Get a volume representation */
server = nfs4_create_server(data, mntfh);
s->s_flags |= MS_ACTIVE;
- security_free_mnt_opts(&data->lsm_opts);
nfs_free_fhandle(mntfh);
return mntroot;
out:
- security_free_mnt_opts(&data->lsm_opts);
-out_free_fh:
nfs_free_fhandle(mntfh);
return ERR_PTR(error);
data = nfs_alloc_parsed_mount_data(4);
if (data == NULL)
- goto out_free_data;
+ goto out;
/* Validate the mount data */
error = nfs4_validate_mount_data(raw_data, data, dev_name);
error = PTR_ERR(res);
out:
- kfree(data->client_address);
- kfree(data->nfs_server.export_path);
- kfree(data->nfs_server.hostname);
- kfree(data->fscache_uniq);
-out_free_data:
- kfree(data);
+ nfs_free_parsed_mount_data(data);
dprintk("<-- nfs4_mount() = %d%s\n", error,
error != 0 ? " [error]" : "");
return res;
.pg_doio = nfs_generic_pg_writepages,
};
-static void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
+void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
struct inode *inode, int ioflags)
{
nfs_pageio_init(pgio, inode, &nfs_pageio_write_ops,
static void nfs_writeback_release_full(void *calldata)
{
struct nfs_write_data *data = calldata;
- int ret, status = data->task.tk_status;
- struct nfs_pageio_descriptor pgio;
-
- if (data->pnfs_error) {
- nfs_pageio_init_write_mds(&pgio, data->inode, FLUSH_STABLE);
- pgio.pg_recoalesce = 1;
- }
+ int status = data->task.tk_status;
/* Update attributes as result of writeback. */
while (!list_empty(&data->pages)) {
req->wb_bytes,
(long long)req_offset(req));
- if (data->pnfs_error) {
- dprintk(", pnfs error = %d\n", data->pnfs_error);
- goto next;
- }
-
if (status < 0) {
nfs_set_pageerror(page);
nfs_context_set_write_error(req->wb_context, status);
next:
nfs_clear_page_tag_locked(req);
nfs_end_page_writeback(page);
- if (data->pnfs_error) {
- lock_page(page);
- nfs_pageio_cond_complete(&pgio, page->index);
- ret = nfs_page_async_flush(&pgio, page, 0);
- if (ret) {
- nfs_set_pageerror(page);
- dprintk("rewrite to MDS error = %d\n", ret);
- }
- unlock_page(page);
- }
}
- if (data->pnfs_error)
- nfs_pageio_complete(&pgio);
nfs_writedata_release(calldata);
}
{
if (callback_cred)
return 0;
- callback_cred = rpc_lookup_machine_cred();
+ callback_cred = rpc_lookup_machine_cred("nfs");
if (!callback_cred)
return -ENOMEM;
return 0;
struct rb_root openowner_id;
struct rb_root lockowner_id;
#endif
+ struct list_head state_owners_lru;
struct list_head layouts;
struct list_head delegations;
void (*destroy)(struct nfs_server *);
/* Forward declaration to make this header independent of others */
struct nfs_client;
struct nfs_server;
+struct nfs_fattr;
+struct nfs4_string;
#ifdef CONFIG_NFS_USE_NEW_IDMAPPER
#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
+void nfs_fattr_init_names(struct nfs_fattr *fattr,
+ struct nfs4_string *owner_name,
+ struct nfs4_string *group_name);
+void nfs_fattr_free_names(struct nfs_fattr *);
+void nfs_fattr_map_and_free_names(struct nfs_server *, struct nfs_fattr *);
+
int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, __u32 *);
int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, __u32 *);
int nfs_map_uid_to_name(const struct nfs_server *, __u32, char *, size_t);
/* Forward declaration for NFS v3 */
struct nfs4_secinfo_flavors;
+struct nfs4_string {
+ unsigned int len;
+ char *data;
+};
+
struct nfs_fsid {
uint64_t major;
uint64_t minor;
struct timespec pre_ctime; /* pre_op_attr.ctime */
unsigned long time_start;
unsigned long gencount;
+ struct nfs4_string *owner_name;
+ struct nfs4_string *group_name;
};
#define NFS_ATTR_FATTR_TYPE (1U << 0)
#define NFS_ATTR_FATTR_V4_REFERRAL (1U << 19) /* NFSv4 referral */
#define NFS_ATTR_FATTR_MOUNTPOINT (1U << 20) /* Treat as mountpoint */
#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 21)
+#define NFS_ATTR_FATTR_OWNER_NAME (1U << 22)
+#define NFS_ATTR_FATTR_GROUP_NAME (1U << 23)
#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
| NFS_ATTR_FATTR_MODE \
const struct qstr * name;
const struct nfs_server *server; /* Needed for ID mapping */
const u32 * bitmask;
+ const u32 * dir_bitmask;
__u32 claim;
struct nfs4_sequence_args seq_args;
};
__u32 do_recall;
__u64 maxsize;
__u32 attrset[NFS4_BITMAP_SIZE];
+ struct nfs4_string *owner;
+ struct nfs4_string *group_owner;
struct nfs4_sequence_res seq_res;
};
size_t acl_len;
unsigned int acl_pgbase;
struct page ** acl_pages;
+ struct page * acl_scratch;
struct nfs4_sequence_args seq_args;
};
+/* getxattr ACL interface flags */
+#define NFS4_ACL_LEN_REQUEST 0x0001 /* zero length getxattr buffer */
struct nfs_getaclres {
size_t acl_len;
+ size_t acl_data_offset;
+ int acl_flags;
struct nfs4_sequence_res seq_res;
};
struct posix_acl * acl_default;
};
-struct nfs4_string {
- unsigned int len;
- char *data;
-};
-
#ifdef CONFIG_NFS_V4
typedef u64 clientid4;
uid_t uid;
gid_t gid;
struct group_info *group_info;
+ const char *principal;
unsigned char machine_cred : 1;
};
void rpc_destroy_authunix(void);
struct rpc_cred * rpc_lookup_cred(void);
-struct rpc_cred * rpc_lookup_machine_cred(void);
+struct rpc_cred * rpc_lookup_machine_cred(const char *service_name);
int rpcauth_register(const struct rpc_authops *);
int rpcauth_unregister(const struct rpc_authops *);
struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
enum rpc_gss_svc gc_service;
struct gss_cl_ctx __rcu *gc_ctx;
struct gss_upcall_msg *gc_upcall;
+ const char *gc_principal;
unsigned long gc_upcall_timestamp;
- unsigned char gc_machine_cred : 1;
};
#endif /* __KERNEL__ */
struct xdr_array2_desc *desc);
extern int xdr_encode_array2(struct xdr_buf *buf, unsigned int base,
struct xdr_array2_desc *desc);
+extern void _copy_from_pages(char *p, struct page **pages, size_t pgbase,
+ size_t len);
/*
* Provide some simple tools for XDR buffer overflow-checking etc.
}
#ifdef CONFIG_ROOT_NFS
+
+#define NFSROOT_TIMEOUT_MIN 5
+#define NFSROOT_TIMEOUT_MAX 30
+#define NFSROOT_RETRY_MAX 5
+
static int __init mount_nfs_root(void)
{
char *root_dev, *root_data;
+ unsigned int timeout;
+ int try, err;
- if (nfs_root_data(&root_dev, &root_data) != 0)
- return 0;
- if (do_mount_root(root_dev, "nfs", root_mountflags, root_data) != 0)
+ err = nfs_root_data(&root_dev, &root_data);
+ if (err != 0)
return 0;
- return 1;
+
+ /*
+ * The server or network may not be ready, so try several
+ * times. Stop after a few tries in case the client wants
+ * to fall back to other boot methods.
+ */
+ timeout = NFSROOT_TIMEOUT_MIN;
+ for (try = 1; ; try++) {
+ err = do_mount_root(root_dev, "nfs",
+ root_mountflags, root_data);
+ if (err == 0)
+ return 1;
+ if (try > NFSROOT_RETRY_MAX)
+ break;
+
+ /* Wait, in case the server refused us immediately */
+ ssleep(timeout);
+ timeout <<= 1;
+ if (timeout > NFSROOT_TIMEOUT_MAX)
+ timeout = NFSROOT_TIMEOUT_MAX;
+ }
+ return 0;
}
#endif
/*
* Public call interface for looking up machine creds.
*/
-struct rpc_cred *rpc_lookup_machine_cred(void)
+struct rpc_cred *rpc_lookup_machine_cred(const char *service_name)
{
struct auth_cred acred = {
.uid = RPC_MACHINE_CRED_USERID,
.gid = RPC_MACHINE_CRED_GROUPID,
+ .principal = service_name,
.machine_cred = 1,
};
- dprintk("RPC: looking up machine cred\n");
+ dprintk("RPC: looking up machine cred for service %s\n",
+ service_name);
return generic_auth.au_ops->lookup_cred(&generic_auth, &acred, 0);
}
EXPORT_SYMBOL_GPL(rpc_lookup_machine_cred);
}
static void gss_encode_v1_msg(struct gss_upcall_msg *gss_msg,
- struct rpc_clnt *clnt, int machine_cred)
+ struct rpc_clnt *clnt,
+ const char *service_name)
{
struct gss_api_mech *mech = gss_msg->auth->mech;
char *p = gss_msg->databuf;
p += len;
gss_msg->msg.len += len;
}
- if (machine_cred) {
- len = sprintf(p, "service=* ");
- p += len;
- gss_msg->msg.len += len;
- } else if (!strcmp(clnt->cl_program->name, "nfs4_cb")) {
- len = sprintf(p, "service=nfs ");
+ if (service_name != NULL) {
+ len = sprintf(p, "service=%s ", service_name);
p += len;
gss_msg->msg.len += len;
}
}
static void gss_encode_msg(struct gss_upcall_msg *gss_msg,
- struct rpc_clnt *clnt, int machine_cred)
+ struct rpc_clnt *clnt,
+ const char *service_name)
{
if (pipe_version == 0)
gss_encode_v0_msg(gss_msg);
else /* pipe_version == 1 */
- gss_encode_v1_msg(gss_msg, clnt, machine_cred);
+ gss_encode_v1_msg(gss_msg, clnt, service_name);
}
-static inline struct gss_upcall_msg *
-gss_alloc_msg(struct gss_auth *gss_auth, uid_t uid, struct rpc_clnt *clnt,
- int machine_cred)
+static struct gss_upcall_msg *
+gss_alloc_msg(struct gss_auth *gss_auth, struct rpc_clnt *clnt,
+ uid_t uid, const char *service_name)
{
struct gss_upcall_msg *gss_msg;
int vers;
atomic_set(&gss_msg->count, 1);
gss_msg->uid = uid;
gss_msg->auth = gss_auth;
- gss_encode_msg(gss_msg, clnt, machine_cred);
+ gss_encode_msg(gss_msg, clnt, service_name);
return gss_msg;
}
struct gss_upcall_msg *gss_new, *gss_msg;
uid_t uid = cred->cr_uid;
- gss_new = gss_alloc_msg(gss_auth, uid, clnt, gss_cred->gc_machine_cred);
+ gss_new = gss_alloc_msg(gss_auth, clnt, uid, gss_cred->gc_principal);
if (IS_ERR(gss_new))
return gss_new;
gss_msg = gss_add_msg(gss_new);
*/
cred->gc_base.cr_flags = 1UL << RPCAUTH_CRED_NEW;
cred->gc_service = gss_auth->service;
- cred->gc_machine_cred = acred->machine_cred;
+ cred->gc_principal = NULL;
+ if (acred->machine_cred)
+ cred->gc_principal = acred->principal;
kref_get(&gss_auth->kref);
return &cred->gc_base;
if (!test_bit(RPCAUTH_CRED_UPTODATE, &rc->cr_flags))
return 0;
out:
- if (acred->machine_cred != gss_cred->gc_machine_cred)
+ if (acred->principal != NULL) {
+ if (gss_cred->gc_principal == NULL)
+ return 0;
+ return strcmp(acred->principal, gss_cred->gc_principal) == 0;
+ }
+ if (gss_cred->gc_principal != NULL)
return 0;
return rc->cr_uid == acred->uid;
}
struct rpc_auth *auth = oldcred->cr_auth;
struct auth_cred acred = {
.uid = oldcred->cr_uid,
- .machine_cred = gss_cred->gc_machine_cred,
+ .principal = gss_cred->gc_principal,
+ .machine_cred = (gss_cred->gc_principal != NULL ? 1 : 0),
};
struct rpc_cred *new;
* Copies data into an arbitrary memory location from an array of pages
* The copy is assumed to be non-overlapping.
*/
-static void
+void
_copy_from_pages(char *p, struct page **pages, size_t pgbase, size_t len)
{
struct page **pgfrom;
} while ((len -= copy) != 0);
}
+EXPORT_SYMBOL_GPL(_copy_from_pages);
/*
* xdr_shrink_bufhead
git.openpandora.org / pandora-kernel.git / commitdiff