summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/admin-guide/nfs/nfs-client.rst15
-rw-r--r--Documentation/filesystems/nfs/client-identifier.rst216
-rw-r--r--Documentation/filesystems/nfs/index.rst2
-rw-r--r--fs/nfs/file.c50
-rw-r--r--fs/nfs/filelayout/filelayout.c7
-rw-r--r--fs/nfs/fscache.c7
-rw-r--r--fs/nfs/internal.h1
-rw-r--r--fs/nfs/nfs4namespace.c9
-rw-r--r--fs/nfs/nfs4proc.c182
-rw-r--r--fs/nfs/nfs4state.c29
-rw-r--r--fs/nfs/nfs4xdr.c99
-rw-r--r--fs/nfs/pagelist.c3
-rw-r--r--fs/nfs/pnfs.c2
-rw-r--r--fs/nfs/unlink.c8
-rw-r--r--fs/nfs/write.c54
-rw-r--r--include/linux/nfs4.h2
-rw-r--r--include/linux/nfs_fs_sb.h1
-rw-r--r--include/linux/nfs_xdr.h12
-rw-r--r--net/sunrpc/xprtrdma/rpc_rdma.c5
19 files changed, 548 insertions, 156 deletions
diff --git a/Documentation/admin-guide/nfs/nfs-client.rst b/Documentation/admin-guide/nfs/nfs-client.rst
index 6adb6457bc69..36760685dd34 100644
--- a/Documentation/admin-guide/nfs/nfs-client.rst
+++ b/Documentation/admin-guide/nfs/nfs-client.rst
@@ -36,10 +36,9 @@ administrative requirements that require particular behavior that does not
work well as part of an nfs_client_id4 string.
The nfs.nfs4_unique_id boot parameter specifies a unique string that can be
-used instead of a system's node name when an NFS client identifies itself to
-a server. Thus, if the system's node name is not unique, or it changes, its
-nfs.nfs4_unique_id stays the same, preventing collision with other clients
-or loss of state during NFS reboot recovery or transparent state migration.
+used together with a system's node name when an NFS client identifies itself to
+a server. Thus, if the system's node name is not unique, its
+nfs.nfs4_unique_id can help prevent collisions with other clients.
The nfs.nfs4_unique_id string is typically a UUID, though it can contain
anything that is believed to be unique across all NFS clients. An
@@ -53,8 +52,12 @@ outstanding NFSv4 state has expired, to prevent loss of NFSv4 state.
This string can be stored in an NFS client's grub.conf, or it can be provided
via a net boot facility such as PXE. It may also be specified as an nfs.ko
-module parameter. Specifying a uniquifier string is not support for NFS
-clients running in containers.
+module parameter.
+
+This uniquifier string will be the same for all NFS clients running in
+containers unless it is overridden by a value written to
+/sys/fs/nfs/net/nfs_client/identifier which will be local to the network
+namespace of the process which writes.
The DNS resolver
diff --git a/Documentation/filesystems/nfs/client-identifier.rst b/Documentation/filesystems/nfs/client-identifier.rst
new file mode 100644
index 000000000000..5147e15815a1
--- /dev/null
+++ b/Documentation/filesystems/nfs/client-identifier.rst
@@ -0,0 +1,216 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=======================
+NFSv4 client identifier
+=======================
+
+This document explains how the NFSv4 protocol identifies client
+instances in order to maintain file open and lock state during
+system restarts. A special identifier and principal are maintained
+on each client. These can be set by administrators, scripts
+provided by site administrators, or tools provided by Linux
+distributors.
+
+There are risks if a client's NFSv4 identifier and its principal
+are not chosen carefully.
+
+
+Introduction
+------------
+
+The NFSv4 protocol uses "lease-based file locking". Leases help
+NFSv4 servers provide file lock guarantees and manage their
+resources.
+
+Simply put, an NFSv4 server creates a lease for each NFSv4 client.
+The server collects each client's file open and lock state under
+the lease for that client.
+
+The client is responsible for periodically renewing its leases.
+While a lease remains valid, the server holding that lease
+guarantees the file locks the client has created remain in place.
+
+If a client stops renewing its lease (for example, if it crashes),
+the NFSv4 protocol allows the server to remove the client's open
+and lock state after a certain period of time. When a client
+restarts, it indicates to servers that open and lock state
+associated with its previous leases is no longer valid and can be
+destroyed immediately.
+
+In addition, each NFSv4 server manages a persistent list of client
+leases. When the server restarts and clients attempt to recover
+their state, the server uses this list to distinguish amongst
+clients that held state before the server restarted and clients
+sending fresh OPEN and LOCK requests. This enables file locks to
+persist safely across server restarts.
+
+NFSv4 client identifiers
+------------------------
+
+Each NFSv4 client presents an identifier to NFSv4 servers so that
+they can associate the client with its lease. Each client's
+identifier consists of two elements:
+
+ - co_ownerid: An arbitrary but fixed string.
+
+ - boot verifier: A 64-bit incarnation verifier that enables a
+ server to distinguish successive boot epochs of the same client.
+
+The NFSv4.0 specification refers to these two items as an
+"nfs_client_id4". The NFSv4.1 specification refers to these two
+items as a "client_owner4".
+
+NFSv4 servers tie this identifier to the principal and security
+flavor that the client used when presenting it. Servers use this
+principal to authorize subsequent lease modification operations
+sent by the client. Effectively this principal is a third element of
+the identifier.
+
+As part of the identity presented to servers, a good
+"co_ownerid" string has several important properties:
+
+ - The "co_ownerid" string identifies the client during reboot
+ recovery, therefore the string is persistent across client
+ reboots.
+ - The "co_ownerid" string helps servers distinguish the client
+ from others, therefore the string is globally unique. Note
+ that there is no central authority that assigns "co_ownerid"
+ strings.
+ - Because it often appears on the network in the clear, the
+ "co_ownerid" string does not reveal private information about
+ the client itself.
+ - The content of the "co_ownerid" string is set and unchanging
+ before the client attempts NFSv4 mounts after a restart.
+ - The NFSv4 protocol places a 1024-byte limit on the size of the
+ "co_ownerid" string.
+
+Protecting NFSv4 lease state
+----------------------------
+
+NFSv4 servers utilize the "client_owner4" as described above to
+assign a unique lease to each client. Under this scheme, there are
+circumstances where clients can interfere with each other. This is
+referred to as "lease stealing".
+
+If distinct clients present the same "co_ownerid" string and use
+the same principal (for example, AUTH_SYS and UID 0), a server is
+unable to tell that the clients are not the same. Each distinct
+client presents a different boot verifier, so it appears to the
+server as if there is one client that is rebooting frequently.
+Neither client can maintain open or lock state in this scenario.
+
+If distinct clients present the same "co_ownerid" string and use
+distinct principals, the server is likely to allow the first client
+to operate normally but reject subsequent clients with the same
+"co_ownerid" string.
+
+If a client's "co_ownerid" string or principal are not stable,
+state recovery after a server or client reboot is not guaranteed.
+If a client unexpectedly restarts but presents a different
+"co_ownerid" string or principal to the server, the server orphans
+the client's previous open and lock state. This blocks access to
+locked files until the server removes the orphaned state.
+
+If the server restarts and a client presents a changed "co_ownerid"
+string or principal to the server, the server will not allow the
+client to reclaim its open and lock state, and may give those locks
+to other clients in the meantime. This is referred to as "lock
+stealing".
+
+Lease stealing and lock stealing increase the potential for denial
+of service and in rare cases even data corruption.
+
+Selecting an appropriate client identifier
+------------------------------------------
+
+By default, the Linux NFSv4 client implementation constructs its
+"co_ownerid" string starting with the words "Linux NFS" followed by
+the client's UTS node name (the same node name, incidentally, that
+is used as the "machine name" in an AUTH_SYS credential). In small
+deployments, this construction is usually adequate. Often, however,
+the node name by itself is not adequately unique, and can change
+unexpectedly. Problematic situations include:
+
+ - NFS-root (diskless) clients, where the local DCHP server (or
+ equivalent) does not provide a unique host name.
+
+ - "Containers" within a single Linux host. If each container has
+ a separate network namespace, but does not use the UTS namespace
+ to provide a unique host name, then there can be multiple NFS
+ client instances with the same host name.
+
+ - Clients across multiple administrative domains that access a
+ common NFS server. If hostnames are not assigned centrally
+ then uniqueness cannot be guaranteed unless a domain name is
+ included in the hostname.
+
+Linux provides two mechanisms to add uniqueness to its "co_ownerid"
+string:
+
+ nfs.nfs4_unique_id
+ This module parameter can set an arbitrary uniquifier string
+ via the kernel command line, or when the "nfs" module is
+ loaded.
+
+ /sys/fs/nfs/client/net/identifier
+ This virtual file, available since Linux 5.3, is local to the
+ network namespace in which it is accessed and so can provide
+ distinction between network namespaces (containers) when the
+ hostname remains uniform.
+
+Note that this file is empty on name-space creation. If the
+container system has access to some sort of per-container identity
+then that uniquifier can be used. For example, a uniquifier might
+be formed at boot using the container's internal identifier:
+
+ sha256sum /etc/machine-id | awk '{print $1}' \\
+ > /sys/fs/nfs/client/net/identifier
+
+Security considerations
+-----------------------
+
+The use of cryptographic security for lease management operations
+is strongly encouraged.
+
+If NFS with Kerberos is not configured, a Linux NFSv4 client uses
+AUTH_SYS and UID 0 as the principal part of its client identity.
+This configuration is not only insecure, it increases the risk of
+lease and lock stealing. However, it might be the only choice for
+client configurations that have no local persistent storage.
+"co_ownerid" string uniqueness and persistence is critical in this
+case.
+
+When a Kerberos keytab is present on a Linux NFS client, the client
+attempts to use one of the principals in that keytab when
+identifying itself to servers. The "sec=" mount option does not
+control this behavior. Alternately, a single-user client with a
+Kerberos principal can use that principal in place of the client's
+host principal.
+
+Using Kerberos for this purpose enables the client and server to
+use the same lease for operations covered by all "sec=" settings.
+Additionally, the Linux NFS client uses the RPCSEC_GSS security
+flavor with Kerberos and the integrity QOS to prevent in-transit
+modification of lease modification requests.
+
+Additional notes
+----------------
+The Linux NFSv4 client establishes a single lease on each NFSv4
+server it accesses. NFSv4 mounts from a Linux NFSv4 client of a
+particular server then share that lease.
+
+Once a client establishes open and lock state, the NFSv4 protocol
+enables lease state to transition to other servers, following data
+that has been migrated. This hides data migration completely from
+running applications. The Linux NFSv4 client facilitates state
+migration by presenting the same "client_owner4" to all servers it
+encounters.
+
+========
+See Also
+========
+
+ - nfs(5)
+ - kerberos(7)
+ - RFC 7530 for the NFSv4.0 specification
+ - RFC 8881 for the NFSv4.1 specification.
diff --git a/Documentation/filesystems/nfs/index.rst b/Documentation/filesystems/nfs/index.rst
index 288d8ddb2bc6..8536134f31fd 100644
--- a/Documentation/filesystems/nfs/index.rst
+++ b/Documentation/filesystems/nfs/index.rst
@@ -6,6 +6,8 @@ NFS
.. toctree::
:maxdepth: 1
+ client-identifier
+ exporting
pnfs
rpc-cache
rpc-server-gss
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 6f5425e89ca6..2d72b1b7ed74 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -206,15 +206,16 @@ static int
nfs_file_fsync_commit(struct file *file, int datasync)
{
struct inode *inode = file_inode(file);
- int ret;
+ int ret, ret2;
dprintk("NFS: fsync file(%pD2) datasync %d\n", file, datasync);
nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
ret = nfs_commit_inode(inode, FLUSH_SYNC);
- if (ret < 0)
- return ret;
- return file_check_and_advance_wb_err(file);
+ ret2 = file_check_and_advance_wb_err(file);
+ if (ret2 < 0)
+ return ret2;
+ return ret;
}
int
@@ -387,11 +388,8 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
return status;
NFS_I(mapping->host)->write_io += copied;
- if (nfs_ctx_key_to_expire(ctx, mapping->host)) {
- status = nfs_wb_all(mapping->host);
- if (status < 0)
- return status;
- }
+ if (nfs_ctx_key_to_expire(ctx, mapping->host))
+ nfs_wb_all(mapping->host);
return copied;
}
@@ -606,18 +604,6 @@ static const struct vm_operations_struct nfs_file_vm_ops = {
.page_mkwrite = nfs_vm_page_mkwrite,
};
-static int nfs_need_check_write(struct file *filp, struct inode *inode,
- int error)
-{
- struct nfs_open_context *ctx;
-
- ctx = nfs_file_open_context(filp);
- if (nfs_error_is_fatal_on_server(error) ||
- nfs_ctx_key_to_expire(ctx, inode))
- return 1;
- return 0;
-}
-
ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
@@ -645,7 +631,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
if (iocb->ki_flags & IOCB_APPEND || iocb->ki_pos > i_size_read(inode)) {
result = nfs_revalidate_file_size(inode, file);
if (result)
- goto out;
+ return result;
}
nfs_clear_invalid_mapping(file->f_mapping);
@@ -664,6 +650,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
written = result;
iocb->ki_pos += written;
+ nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
if (mntflags & NFS_MOUNT_WRITE_EAGER) {
result = filemap_fdatawrite_range(file->f_mapping,
@@ -681,17 +668,22 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
}
result = generic_write_sync(iocb, written);
if (result < 0)
- goto out;
+ return result;
+out:
/* Return error values */
error = filemap_check_wb_err(file->f_mapping, since);
- if (nfs_need_check_write(file, inode, error)) {
- int err = nfs_wb_all(inode);
- if (err < 0)
- result = err;
+ switch (error) {
+ default:
+ break;
+ case -EDQUOT:
+ case -EFBIG:
+ case -ENOSPC:
+ nfs_wb_all(inode);
+ error = file_check_and_advance_wb_err(file);
+ if (error < 0)
+ result = error;
}
- nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
-out:
return result;
out_swapfile:
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
index 76deddab0a8f..2b2661582bbe 100644
--- a/fs/nfs/filelayout/filelayout.c
+++ b/fs/nfs/filelayout/filelayout.c
@@ -839,7 +839,12 @@ fl_pnfs_update_layout(struct inode *ino,
lseg = pnfs_update_layout(ino, ctx, pos, count, iomode, strict_iomode,
gfp_flags);
- if (IS_ERR_OR_NULL(lseg))
+ if (IS_ERR(lseg)) {
+ /* Fall back to MDS on recoverable errors */
+ if (!nfs_error_is_fatal_on_server(PTR_ERR(lseg)))
+ lseg = NULL;
+ goto out;
+ } else if (!lseg)
goto out;
lo = NFS_I(ino)->layout;
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index f73c09a9cf0a..e861d7bae305 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -231,11 +231,10 @@ void nfs_fscache_release_file(struct inode *inode, struct file *filp)
{
struct nfs_fscache_inode_auxdata auxdata;
struct fscache_cookie *cookie = nfs_i_fscache(inode);
+ loff_t i_size = i_size_read(inode);
- if (fscache_cookie_valid(cookie)) {
- nfs_fscache_update_auxdata(&auxdata, inode);
- fscache_unuse_cookie(cookie, &auxdata, NULL);
- }
+ nfs_fscache_update_auxdata(&auxdata, inode);
+ fscache_unuse_cookie(cookie, &auxdata, &i_size);
}
/*
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 7eefa16ed381..8f8cd6e2d4db 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -841,6 +841,7 @@ static inline bool nfs_error_is_fatal_on_server(int err)
case 0:
case -ERESTARTSYS:
case -EINTR:
+ case -ENOMEM:
return false;
}
return nfs_error_is_fatal(err);
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 3680c8da510c..f2dbf904c598 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -417,6 +417,9 @@ static int nfs_do_refmount(struct fs_context *fc, struct rpc_clnt *client)
fs_locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
if (!fs_locations)
goto out_free;
+ fs_locations->fattr = nfs_alloc_fattr();
+ if (!fs_locations->fattr)
+ goto out_free_2;
/* Get locations */
dentry = ctx->clone_data.dentry;
@@ -427,14 +430,16 @@ static int nfs_do_refmount(struct fs_context *fc, struct rpc_clnt *client)
err = nfs4_proc_fs_locations(client, d_inode(parent), &dentry->d_name, fs_locations, page);
dput(parent);
if (err != 0)
- goto out_free_2;
+ goto out_free_3;
err = -ENOENT;
if (fs_locations->nlocations <= 0 ||
fs_locations->fs_path.ncomponents <= 0)
- goto out_free_2;
+ goto out_free_3;
err = nfs_follow_referral(fc, fs_locations);
+out_free_3:
+ kfree(fs_locations->fattr);
out_free_2:
kfree(fs_locations);
out_free:
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index a79f66432bd3..c0fdcf8c0032 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1162,7 +1162,7 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
{
unsigned short task_flags = 0;
- if (server->nfs_client->cl_minorversion)
+ if (server->caps & NFS_CAP_MOVEABLE)
task_flags = RPC_TASK_MOVEABLE;
return nfs4_do_call_sync(clnt, server, msg, args, res, task_flags);
}
@@ -2568,7 +2568,7 @@ static int nfs4_run_open_task(struct nfs4_opendata *data,
};
int status;
- if (server->nfs_client->cl_minorversion)
+ if (nfs_server_capable(dir, NFS_CAP_MOVEABLE))
task_setup_data.flags |= RPC_TASK_MOVEABLE;
kref_get(&data->kref);
@@ -3098,6 +3098,10 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
}
out:
+ if (opendata->lgp) {
+ nfs4_lgopen_release(opendata->lgp);
+ opendata->lgp = NULL;
+ }
if (!opendata->cancelled)
nfs4_sequence_free_slot(&opendata->o_res.seq_res);
return ret;
@@ -3733,7 +3737,7 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
};
int status = -ENOMEM;
- if (server->nfs_client->cl_minorversion)
+ if (nfs_server_capable(state->inode, NFS_CAP_MOVEABLE))
task_setup_data.flags |= RPC_TASK_MOVEABLE;
nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
@@ -4243,6 +4247,8 @@ static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
if (locations == NULL)
goto out;
+ locations->fattr = fattr;
+
status = nfs4_proc_fs_locations(client, dir, name, locations, page);
if (status != 0)
goto out;
@@ -4252,17 +4258,14 @@ static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
* referral. Cause us to drop into the exception handler, which
* will kick off migration recovery.
*/
- if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
+ if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &fattr->fsid)) {
dprintk("%s: server did not return a different fsid for"
" a referral at %s\n", __func__, name->name);
status = -NFS4ERR_MOVED;
goto out;
}
/* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
- nfs_fixup_referral_attributes(&locations->fattr);
-
- /* replace the lookup nfs_fattr with the locations nfs_fattr */
- memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
+ nfs_fixup_referral_attributes(fattr);
memset(fhandle, 0, sizeof(struct nfs_fh));
out:
if (page)
@@ -4404,7 +4407,7 @@ static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
};
unsigned short task_flags = 0;
- if (server->nfs_client->cl_minorversion)
+ if (nfs_server_capable(dir, NFS_CAP_MOVEABLE))
task_flags = RPC_TASK_MOVEABLE;
/* Is this is an attribute revalidation, subject to softreval? */
@@ -5768,9 +5771,17 @@ static int nfs4_proc_renew(struct nfs_client *clp, const struct cred *cred)
return 0;
}
-static inline int nfs4_server_supports_acls(struct nfs_server *server)
+static bool nfs4_server_supports_acls(const struct nfs_server *server,
+ enum nfs4_acl_type type)
{
- return server->caps & NFS_CAP_ACLS;
+ switch (type) {
+ default:
+ return server->attr_bitmask[0] & FATTR4_WORD0_ACL;
+ case NFS4ACL_DACL:
+ return server->attr_bitmask[1] & FATTR4_WORD1_DACL;
+ case NFS4ACL_SACL:
+ return server->attr_bitmask[1] & FATTR4_WORD1_SACL;
+ }
}
/* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
@@ -5809,6 +5820,7 @@ unwind:
}
struct nfs4_cached_acl {
+ enum nfs4_acl_type type;
int cached;
size_t len;
char data[];
@@ -5829,7 +5841,8 @@ static void nfs4_zap_acl_attr(struct inode *inode)
nfs4_set_cached_acl(inode, NULL);
}
-static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
+static ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf,
+ size_t buflen, enum nfs4_acl_type type)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs4_cached_acl *acl;
@@ -5839,6 +5852,8 @@ static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_
acl = nfsi->nfs4_acl;
if (acl == NULL)
goto out;
+ if (acl->type != type)
+ goto out;
if (buf == NULL) /* user is just asking for length */
goto out_len;
if (acl->cached == 0)
@@ -5854,7 +5869,9 @@ out:
return ret;
}
-static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
+static void nfs4_write_cached_acl(struct inode *inode, struct page **pages,
+ size_t pgbase, size_t acl_len,
+ enum nfs4_acl_type type)
{
struct nfs4_cached_acl *acl;
size_t buflen = sizeof(*acl) + acl_len;
@@ -5871,6 +5888,7 @@ static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size
goto out;
acl->cached = 0;
}
+ acl->type = type;
acl->len = acl_len;
out:
nfs4_set_cached_acl(inode, acl);
@@ -5886,14 +5904,17 @@ out:
* 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)
+static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf,
+ size_t buflen, enum nfs4_acl_type type)
{
struct page **pages;
struct nfs_getaclargs args = {
.fh = NFS_FH(inode),
+ .acl_type = type,
.acl_len = buflen,
};
struct nfs_getaclres res = {
+ .acl_type = type,
.acl_len = buflen,
};
struct rpc_message msg = {
@@ -5943,7 +5964,8 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu
ret = -ERANGE;
goto out_free;
}
- nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
+ nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len,
+ type);
if (buf) {
if (res.acl_len > buflen) {
ret = -ERANGE;
@@ -5963,14 +5985,15 @@ out_free:
return ret;
}
-static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
+static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf,
+ size_t buflen, enum nfs4_acl_type type)
{
struct nfs4_exception exception = {
.interruptible = true,
};
ssize_t ret;
do {
- ret = __nfs4_get_acl_uncached(inode, buf, buflen);
+ ret = __nfs4_get_acl_uncached(inode, buf, buflen, type);
trace_nfs4_get_acl(inode, ret);
if (ret >= 0)
break;
@@ -5979,34 +6002,37 @@ static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bufl
return ret;
}
-static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
+static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen,
+ enum nfs4_acl_type type)
{
struct nfs_server *server = NFS_SERVER(inode);
int ret;
- if (!nfs4_server_supports_acls(server))
+ if (!nfs4_server_supports_acls(server, type))
return -EOPNOTSUPP;
ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE);
if (ret < 0)
return ret;
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
nfs_zap_acl_cache(inode);
- ret = nfs4_read_cached_acl(inode, buf, buflen);
+ ret = nfs4_read_cached_acl(inode, buf, buflen, type);
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 nfs4_get_acl_uncached(inode, buf, buflen, type);
}
-static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
+static int __nfs4_proc_set_acl(struct inode *inode, const void *buf,
+ size_t buflen, enum nfs4_acl_type type)
{
struct nfs_server *server = NFS_SERVER(inode);
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_setaclargs arg = {
- .fh = NFS_FH(inode),
- .acl_pages = pages,
- .acl_len = buflen,
+ .fh = NFS_FH(inode),
+ .acl_type = type,
+ .acl_len = buflen,
+ .acl_pages = pages,
};
struct nfs_setaclres res;
struct rpc_message msg = {
@@ -6020,7 +6046,7 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
/* You can't remove system.nfs4_acl: */
if (buflen == 0)
return -EINVAL;
- if (!nfs4_server_supports_acls(server))
+ if (!nfs4_server_supports_acls(server, type))
return -EOPNOTSUPP;
if (npages > ARRAY_SIZE(pages))
return -ERANGE;
@@ -6051,12 +6077,13 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
return ret;
}
-static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
+static int nfs4_proc_set_acl(struct inode *inode, const void *buf,
+ size_t buflen, enum nfs4_acl_type type)
{
struct nfs4_exception exception = { };
int err;
do {
- err = __nfs4_proc_set_acl(inode, buf, buflen);
+ err = __nfs4_proc_set_acl(inode, buf, buflen, type);
trace_nfs4_set_acl(inode, err);
if (err == -NFS4ERR_BADOWNER || err == -NFS4ERR_BADNAME) {
/*
@@ -6612,10 +6639,13 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
- .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE,
+ .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
};
int status = 0;
+ if (nfs_server_capable(inode, NFS_CAP_MOVEABLE))
+ task_setup_data.flags |= RPC_TASK_MOVEABLE;
+
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
@@ -6929,10 +6959,8 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
- struct nfs_client *client =
- NFS_SERVER(lsp->ls_state->inode)->nfs_client;
- if (client->cl_minorversion)
+ if (nfs_server_capable(lsp->ls_state->inode, NFS_CAP_MOVEABLE))
task_setup_data.flags |= RPC_TASK_MOVEABLE;
nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
@@ -7203,9 +7231,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF,
};
int ret;
- struct nfs_client *client = NFS_SERVER(state->inode)->nfs_client;
- if (client->cl_minorversion)
+ if (nfs_server_capable(state->inode, NFS_CAP_MOVEABLE))
task_setup_data.flags |= RPC_TASK_MOVEABLE;
data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
@@ -7655,21 +7682,70 @@ static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
const char *key, const void *buf,
size_t buflen, int flags)
{
- return nfs4_proc_set_acl(inode, buf, buflen);
+ return nfs4_proc_set_acl(inode, buf, buflen, NFS4ACL_ACL);
}
static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
const char *key, void *buf, size_t buflen)
{
- return nfs4_proc_get_acl(inode, buf, buflen);
+ return nfs4_proc_get_acl(inode, buf, buflen, NFS4ACL_ACL);
}
static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
{
- return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)));
+ return nfs4_server_supports_acls(NFS_SB(dentry->d_sb), NFS4ACL_ACL);
+}
+
+#if defined(CONFIG_NFS_V4_1)
+#define XATTR_NAME_NFSV4_DACL "system.nfs4_dacl"
+
+static int nfs4_xattr_set_nfs4_dacl(const struct xattr_handler *handler,
+ struct user_namespace *mnt_userns,
+ struct dentry *unused, struct inode *inode,
+ const char *key, const void *buf,
+ size_t buflen, int flags)
+{
+ return nfs4_proc_set_acl(inode, buf, buflen, NFS4ACL_DACL);
+}
+
+static int nfs4_xattr_get_nfs4_dacl(const struct xattr_handler *handler,
+ struct dentry *unused, struct inode *inode,
+ const char *key, void *buf, size_t buflen)
+{
+ return nfs4_proc_get_acl(inode, buf, buflen, NFS4ACL_DACL);
+}
+
+static bool nfs4_xattr_list_nfs4_dacl(struct dentry *dentry)
+{
+ return nfs4_server_supports_acls(NFS_SB(dentry->d_sb), NFS4ACL_DACL);
+}
+
+#define XATTR_NAME_NFSV4_SACL "system.nfs4_sacl"
+
+static int nfs4_xattr_set_nfs4_sacl(const struct xattr_handler *handler,
+ struct user_namespace *mnt_userns,
+ struct dentry *unused, struct inode *inode,
+ const char *key, const void *buf,
+ size_t buflen, int flags)
+{
+ return nfs4_proc_set_acl(inode, buf, buflen, NFS4ACL_SACL);
+}
+
+static int nfs4_xattr_get_nfs4_sacl(const struct xattr_handler *handler,
+ struct dentry *unused, struct inode *inode,
+ const char *key, void *buf, size_t buflen)
+{
+ return nfs4_proc_get_acl(inode, buf, buflen, NFS4ACL_SACL);
}
+static bool nfs4_xattr_list_nfs4_sacl(struct dentry *dentry)
+{
+ return nfs4_server_supports_acls(NFS_SB(dentry->d_sb), NFS4ACL_SACL);
+}
+
+#endif
+
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
@@ -7902,7 +7978,7 @@ static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
else
bitmask[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
- nfs_fattr_init(&fs_locations->fattr);
+ nfs_fattr_init(fs_locations->fattr);
fs_locations->server = server;
fs_locations->nlocations = 0;
status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
@@ -7967,7 +8043,7 @@ static int _nfs40_proc_get_locations(struct nfs_server *server,
unsigned long now = jiffies;
int status;
- nfs_fattr_init(&locations->fattr);
+ nfs_fattr_init(locations->fattr);
locations->server = server;
locations->nlocations = 0;
@@ -8032,7 +8108,7 @@ static int _nfs41_proc_get_locations(struct nfs_server *server,
};
int status;
- nfs_fattr_init(&locations->fattr);
+ nfs_fattr_init(locations->fattr);
locations->server = server;
locations->nlocations = 0;
@@ -10391,7 +10467,8 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
| NFS_CAP_POSIX_LOCK
| NFS_CAP_STATEID_NFSV41
| NFS_CAP_ATOMIC_OPEN_V1
- | NFS_CAP_LGOPEN,
+ | NFS_CAP_LGOPEN
+ | NFS_CAP_MOVEABLE,
.init_client = nfs41_init_client,
.shutdown_client = nfs41_shutdown_client,
.match_stateid = nfs41_match_stateid,
@@ -10426,7 +10503,8 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
| NFS_CAP_LAYOUTSTATS
| NFS_CAP_CLONE
| NFS_CAP_LAYOUTERROR
- | NFS_CAP_READ_PLUS,
+ | NFS_CAP_READ_PLUS
+ | NFS_CAP_MOVEABLE,
.init_client = nfs41_init_client,
.shutdown_client = nfs41_shutdown_client,
.match_stateid = nfs41_match_stateid,
@@ -10587,6 +10665,22 @@ static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
.set = nfs4_xattr_set_nfs4_acl,
};
+#if defined(CONFIG_NFS_V4_1)
+static const struct xattr_handler nfs4_xattr_nfs4_dacl_handler = {
+ .name = XATTR_NAME_NFSV4_DACL,
+ .list = nfs4_xattr_list_nfs4_dacl,
+ .get = nfs4_xattr_get_nfs4_dacl,
+ .set = nfs4_xattr_set_nfs4_dacl,
+};
+
+static const struct xattr_handler nfs4_xattr_nfs4_sacl_handler = {
+ .name = XATTR_NAME_NFSV4_SACL,
+ .list = nfs4_xattr_list_nfs4_sacl,
+ .get = nfs4_xattr_get_nfs4_sacl,
+ .set = nfs4_xattr_set_nfs4_sacl,
+};
+#endif
+
#ifdef CONFIG_NFS_V4_2
static const struct xattr_handler nfs4_xattr_nfs4_user_handler = {
.prefix = XATTR_USER_PREFIX,
@@ -10597,6 +10691,10 @@ static const struct xattr_handler nfs4_xattr_nfs4_user_handler = {
const struct xattr_handler *nfs4_xattr_handlers[] = {
&nfs4_xattr_nfs4_acl_handler,
+#if defined(CONFIG_NFS_V4_1)
+ &nfs4_xattr_nfs4_dacl_handler,
+ &nfs4_xattr_nfs4_sacl_handler,
+#endif
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
&nfs4_xattr_nfs4_label_handler,
#endif
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 9e1c987c81e7..2540b35ec187 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1602,7 +1602,8 @@ static inline void nfs42_complete_copies(struct nfs4_state_owner *sp,
#endif /* CONFIG_NFS_V4_2 */
static int __nfs4_reclaim_open_state(struct nfs4_state_owner *sp, struct nfs4_state *state,
- const struct nfs4_state_recovery_ops *ops)
+ const struct nfs4_state_recovery_ops *ops,
+ int *lost_locks)
{
struct nfs4_lock_state *lock;
int status;
@@ -1620,7 +1621,7 @@ static int __nfs4_reclaim_open_state(struct nfs4_state_owner *sp, struct nfs4_st
list_for_each_entry(lock, &state->lock_states, ls_locks) {
trace_nfs4_state_lock_reclaim(state, lock);
if (!test_bit(NFS_LOCK_INITIALIZED, &lock->ls_flags))
- pr_warn_ratelimited("NFS: %s: Lock reclaim failed!\n", __func__);
+ *lost_locks += 1;
}
spin_unlock(&state->state_lock);
}
@@ -1630,7 +1631,9 @@ static int __nfs4_reclaim_open_state(struct nfs4_state_owner *sp, struct nfs4_st
return status;
}
-static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs4_state_recovery_ops *ops)
+static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp,
+ const struct nfs4_state_recovery_ops *ops,
+ int *lost_locks)
{
struct nfs4_state *state;
unsigned int loop = 0;
@@ -1666,7 +1669,7 @@ restart:
#endif /* CONFIG_NFS_V4_2 */
refcount_inc(&state->count);
spin_unlock(&sp->so_lock);
- status = __nfs4_reclaim_open_state(sp, state, ops);
+ status = __nfs4_reclaim_open_state(sp, state, ops, lost_locks);
switch (status) {
default:
@@ -1909,6 +1912,7 @@ static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recov
struct rb_node *pos;
LIST_HEAD(freeme);
int status = 0;
+ int lost_locks = 0;
restart:
rcu_read_lock();
@@ -1928,8 +1932,11 @@ restart:
spin_unlock(&clp->cl_lock);
rcu_read_unlock();
- status = nfs4_reclaim_open_state(sp, ops);
+ status = nfs4_reclaim_open_state(sp, ops, &lost_locks);
if (status < 0) {
+ if (lost_locks)
+ pr_warn("NFS: %s: lost %d locks\n",
+ clp->cl_hostname, lost_locks);
set_bit(ops->owner_flag_bit, &sp->so_flags);
nfs4_put_state_owner(sp);
status = nfs4_recovery_handle_error(clp, status);
@@ -1943,6 +1950,9 @@ restart:
}
rcu_read_unlock();
nfs4_free_state_owners(&freeme);
+ if (lost_locks)
+ pr_warn("NFS: %s: lost %d locks\n",
+ clp->cl_hostname, lost_locks);
return 0;
}
@@ -2106,6 +2116,11 @@ static int nfs4_try_migration(struct nfs_server *server, const struct cred *cred
dprintk("<-- %s: no memory\n", __func__);
goto out;
}
+ locations->fattr = nfs_alloc_fattr();
+ if (locations->fattr == NULL) {
+ dprintk("<-- %s: no memory\n", __func__);
+ goto out;
+ }
inode = d_inode(server->super->s_root);
result = nfs4_proc_get_locations(server, NFS_FH(inode), locations,
@@ -2120,7 +2135,7 @@ static int nfs4_try_migration(struct nfs_server *server, const struct cred *cred
if (!locations->nlocations)
goto out;
- if (!(locations->fattr.valid & NFS_ATTR_FATTR_V4_LOCATIONS)) {
+ if (!(locations->fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)) {
dprintk("<-- %s: No fs_locations data, migration skipped\n",
__func__);
goto out;
@@ -2145,6 +2160,8 @@ static int nfs4_try_migration(struct nfs_server *server, const struct cred *cred
out:
if (page != NULL)
__free_page(page);
+ if (locations != NULL)
+ kfree(locations->fattr);
kfree(locations);
if (result) {
pr_err("NFS: migration recovery failed (server %s)\n",
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 86a5f6516928..acfe5f4bda48 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1680,19 +1680,35 @@ encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
}
-static void
-encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg,
- struct compound_hdr *hdr)
+static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2])
{
- __be32 *p;
+ switch (type) {
+ default:
+ bitmap[0] = FATTR4_WORD0_ACL;
+ bitmap[1] = 0;
+ break;
+ case NFS4ACL_DACL:
+ bitmap[0] = 0;
+ bitmap[1] = FATTR4_WORD1_DACL;
+ break;
+ case NFS4ACL_SACL:
+ bitmap[0] = 0;
+ bitmap[1] = FATTR4_WORD1_SACL;
+ }
+}
+
+static void encode_setacl(struct xdr_stream *xdr,
+ const struct nfs_setaclargs *arg,
+ struct compound_hdr *hdr)
+{
+ __u32 bitmap[2];
+
+ nfs4_acltype_to_bitmap(arg->acl_type, bitmap);
encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
encode_nfs4_stateid(xdr, &zero_stateid);
- p = reserve_space(xdr, 2*4);
- *p++ = cpu_to_be32(1);
- *p = cpu_to_be32(FATTR4_WORD0_ACL);
- p = reserve_space(xdr, 4);
- *p = cpu_to_be32(arg->acl_len);
+ xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap));
+ encode_uint32(xdr, arg->acl_len);
xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
}
@@ -2587,11 +2603,11 @@ static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- const __u32 nfs4_acl_bitmap[1] = {
- [0] = FATTR4_WORD0_ACL,
- };
+ __u32 nfs4_acl_bitmap[2];
uint32_t replen;
+ nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap);
+
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
@@ -5386,7 +5402,7 @@ decode_restorefh(struct xdr_stream *xdr)
}
static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
- struct nfs_getaclres *res)
+ struct nfs_getaclres *res, enum nfs4_acl_type type)
{
unsigned int savep;
uint32_t attrlen,
@@ -5404,26 +5420,39 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto out;
- if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
- return -EIO;
- if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
-
- /* 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.*/
- res->acl_data_offset = xdr_page_pos(xdr);
- res->acl_len = attrlen;
-
- /* Check for receive buffer overflow */
- if (res->acl_len > xdr_stream_remaining(xdr) ||
- res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
- res->acl_flags |= NFS4_ACL_TRUNC;
- dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
- attrlen, xdr_stream_remaining(xdr));
- }
- } else
- status = -EOPNOTSUPP;
+ switch (type) {
+ default:
+ if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
+ return -EIO;
+ if (!(bitmap[0] & FATTR4_WORD0_ACL))
+ return -EOPNOTSUPP;
+ break;
+ case NFS4ACL_DACL:
+ if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U)))
+ return -EIO;
+ if (!(bitmap[1] & FATTR4_WORD1_DACL))
+ return -EOPNOTSUPP;
+ break;
+ case NFS4ACL_SACL:
+ if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U)))
+ return -EIO;
+ if (!(bitmap[1] & FATTR4_WORD1_SACL))
+ return -EOPNOTSUPP;
+ }
+ /* 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.*/
+ res->acl_data_offset = xdr_page_pos(xdr);
+ res->acl_len = attrlen;
+
+ /* Check for receive buffer overflow */
+ if (res->acl_len > xdr_stream_remaining(xdr) ||
+ res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
+ res->acl_flags |= NFS4_ACL_TRUNC;
+ dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
+ attrlen, xdr_stream_remaining(xdr));
+ }
out:
return status;
}
@@ -6486,7 +6515,7 @@ nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getacl(xdr, rqstp, res);
+ status = decode_getacl(xdr, rqstp, res, res->acl_type);
out:
return status;
@@ -7051,7 +7080,7 @@ static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
if (res->migration) {
xdr_enter_page(xdr, PAGE_SIZE);
status = decode_getfattr_generic(xdr,
- &res->fs_locations->fattr,
+ res->fs_locations->fattr,
NULL, res->fs_locations,
res->fs_locations->server);
if (status)
@@ -7064,7 +7093,7 @@ static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
goto out;
xdr_enter_page(xdr, PAGE_SIZE);
status = decode_getfattr_generic(xdr,
- &res->fs_locations->fattr,
+ res->fs_locations->fattr,
NULL, res->fs_locations,
res->fs_locations->server);
}
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 9157dd19b8b4..317cedfa52bf 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -767,6 +767,9 @@ int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr,
.flags = RPC_TASK_ASYNC | flags,
};
+ if (nfs_server_capable(hdr->inode, NFS_CAP_MOVEABLE))
+ task_setup_data.flags |= RPC_TASK_MOVEABLE;
+
hdr->rw_ops->rw_initiate(hdr, &msg, rpc_ops, &task_setup_data, how);
dprintk("NFS: initiated pgio call "
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 856c962273c7..68a87be3e6f9 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2000,6 +2000,7 @@ lookup_again:
lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);
if (lo == NULL) {
spin_unlock(&ino->i_lock);
+ lseg = ERR_PTR(-ENOMEM);
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_NOMEM);
goto out;
@@ -2128,6 +2129,7 @@ lookup_again:
lgp = pnfs_alloc_init_layoutget_args(ino, ctx, &stateid, &arg, gfp_flags);
if (!lgp) {
+ lseg = ERR_PTR(-ENOMEM);
trace_pnfs_update_layout(ino, pos, count, iomode, lo, NULL,
PNFS_UPDATE_LAYOUT_NOMEM);
nfs_layoutget_end(lo);
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 6f325e10056c..9697cd5d2561 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -102,6 +102,10 @@ static void nfs_do_call_unlink(struct inode *inode, struct nfs_unlinkdata *data)
};
struct rpc_task *task;
struct inode *dir = d_inode(data->dentry->d_parent);
+
+ if (nfs_server_capable(inode, NFS_CAP_MOVEABLE))
+ task_setup_data.flags |= RPC_TASK_MOVEABLE;
+
nfs_sb_active(dir->i_sb);
data->args.fh = NFS_FH(dir);
nfs_fattr_init(data->res.dir_attr);
@@ -344,6 +348,10 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF,
};
+ if (nfs_server_capable(old_dir, NFS_CAP_MOVEABLE) &&
+ nfs_server_capable(new_dir, NFS_CAP_MOVEABLE))
+ task_setup_data.flags |= RPC_TASK_MOVEABLE;
+
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return ERR_PTR(-ENOMEM);
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index f00d45cf80ef..1c706465d090 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -603,8 +603,9 @@ static void nfs_write_error(struct nfs_page *req, int error)
* Find an associated nfs write request, and prepare to flush it out
* May return an error if the user signalled nfs_wait_on_request().
*/
-static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
- struct page *page)
+static int nfs_page_async_flush(struct page *page,
+ struct writeback_control *wbc,
+ struct nfs_pageio_descriptor *pgio)
{
struct nfs_page *req;
int ret = 0;
@@ -630,11 +631,11 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
/*
* Remove the problematic req upon fatal errors on the server
*/
- if (nfs_error_is_fatal(ret)) {
- if (nfs_error_is_fatal_on_server(ret))
- goto out_launder;
- } else
- ret = -EAGAIN;
+ if (nfs_error_is_fatal_on_server(ret))
+ goto out_launder;
+ if (wbc->sync_mode == WB_SYNC_NONE)
+ ret = AOP_WRITEPAGE_ACTIVATE;
+ redirty_page_for_writepage(wbc, page);
nfs_redirty_request(req);
pgio->pg_error = 0;
} else
@@ -650,15 +651,8 @@ out_launder:
static int nfs_do_writepage(struct page *page, struct writeback_control *wbc,
struct nfs_pageio_descriptor *pgio)
{
- int ret;
-
nfs_pageio_cond_complete(pgio, page_index(page));
- ret = nfs_page_async_flush(pgio, page);
- if (ret == -EAGAIN) {
- redirty_page_for_writepage(wbc, page);
- ret = AOP_WRITEPAGE_ACTIVATE;
- }
- return ret;
+ return nfs_page_async_flush(page, wbc, pgio);
}
/*
@@ -681,11 +675,7 @@ static int nfs_writepage_locked(struct page *page,
err = nfs_do_writepage(page, wbc, &pgio);
pgio.pg_error = 0;
nfs_pageio_complete(&pgio);
- if (err < 0)
- return err;
- if (nfs_error_is_fatal(pgio.pg_error))
- return pgio.pg_error;
- return 0;
+ return err;
}
int nfs_writepage(struct page *page, struct writeback_control *wbc)
@@ -737,19 +727,19 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
priority = wb_priority(wbc);
}
- nfs_pageio_init_write(&pgio, inode, priority, false,
- &nfs_async_write_completion_ops);
- pgio.pg_io_completion = ioc;
- err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
- pgio.pg_error = 0;
- nfs_pageio_complete(&pgio);
+ do {
+ nfs_pageio_init_write(&pgio, inode, priority, false,
+ &nfs_async_write_completion_ops);
+ pgio.pg_io_completion = ioc;
+ err = write_cache_pages(mapping, wbc, nfs_writepages_callback,
+ &pgio);
+ pgio.pg_error = 0;
+ nfs_pageio_complete(&pgio);
+ } while (err < 0 && !nfs_error_is_fatal(err));
nfs_io_completion_put(ioc);
if (err < 0)
goto out_err;
- err = pgio.pg_error;
- if (nfs_error_is_fatal(err))
- goto out_err;
return 0;
out_err:
return err;
@@ -1444,7 +1434,7 @@ static void nfs_async_write_error(struct list_head *head, int error)
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
- if (nfs_error_is_fatal(error))
+ if (nfs_error_is_fatal_on_server(error))
nfs_write_error(req, error);
else
nfs_redirty_request(req);
@@ -1719,6 +1709,10 @@ int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data,
.flags = RPC_TASK_ASYNC | flags,
.priority = priority,
};
+
+ if (nfs_server_capable(data->inode, NFS_CAP_MOVEABLE))
+ task_setup_data.flags |= RPC_TASK_MOVEABLE;
+
/* Set up the initial task struct. */
nfs_ops->commit_setup(data, &msg, &task_setup_data.rpc_client);
trace_nfs_initiate_commit(data);
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 5662d8be04eb..8d04b6a5964c 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -451,6 +451,8 @@ enum lock_type4 {
#define FATTR4_WORD1_TIME_MODIFY (1UL << 21)
#define FATTR4_WORD1_TIME_MODIFY_SET (1UL << 22)
#define FATTR4_WORD1_MOUNTED_ON_FILEID (1UL << 23)
+#define FATTR4_WORD1_DACL (1UL << 26)
+#define FATTR4_WORD1_SACL (1UL << 27)
#define FATTR4_WORD1_FS_LAYOUT_TYPES (1UL << 30)
#define FATTR4_WORD2_LAYOUT_TYPES (1UL << 0)
#define FATTR4_WORD2_LAYOUT_BLKSIZE (1UL << 1)
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 157d2bd6b241..ea2f7e6b1b0b 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -287,4 +287,5 @@ struct nfs_server {
#define NFS_CAP_XATTR (1U << 28)
#define NFS_CAP_READ_PLUS (1U << 29)
#define NFS_CAP_FS_LOCATIONS (1U << 30)
+#define NFS_CAP_MOVEABLE (1U << 31)
#endif
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 2863e5a69c6a..0e3aa0f5f324 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -800,9 +800,17 @@ struct nfs_setattrargs {
const struct nfs4_label *label;
};
+enum nfs4_acl_type {
+ NFS4ACL_NONE = 0,
+ NFS4ACL_ACL,
+ NFS4ACL_DACL,
+ NFS4ACL_SACL,
+};
+
struct nfs_setaclargs {
struct nfs4_sequence_args seq_args;
struct nfs_fh * fh;
+ enum nfs4_acl_type acl_type;
size_t acl_len;
struct page ** acl_pages;
};
@@ -814,6 +822,7 @@ struct nfs_setaclres {
struct nfs_getaclargs {
struct nfs4_sequence_args seq_args;
struct nfs_fh * fh;
+ enum nfs4_acl_type acl_type;
size_t acl_len;
struct page ** acl_pages;
};
@@ -822,6 +831,7 @@ struct nfs_getaclargs {
#define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
struct nfs_getaclres {
struct nfs4_sequence_res seq_res;
+ enum nfs4_acl_type acl_type;
size_t acl_len;
size_t acl_data_offset;
int acl_flags;
@@ -1212,7 +1222,7 @@ struct nfs4_fs_location {
#define NFS4_FS_LOCATIONS_MAXENTRIES 10
struct nfs4_fs_locations {
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
const struct nfs_server *server;
struct nfs4_pathname fs_path;
int nlocations;
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c
index 281ddb87ac8d..190a4de239c8 100644
--- a/net/sunrpc/xprtrdma/rpc_rdma.c
+++ b/net/sunrpc/xprtrdma/rpc_rdma.c
@@ -1121,6 +1121,7 @@ static bool
rpcrdma_is_bcall(struct rpcrdma_xprt *r_xprt, struct rpcrdma_rep *rep)
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
{
+ struct rpc_xprt *xprt = &r_xprt->rx_xprt;
struct xdr_stream *xdr = &rep->rr_stream;
__be32 *p;
@@ -1144,6 +1145,10 @@ rpcrdma_is_bcall(struct rpcrdma_xprt *r_xprt, struct rpcrdma_rep *rep)
if (*p != cpu_to_be32(RPC_CALL))
return false;
+ /* No bc service. */
+ if (xprt->bc_serv == NULL)
+ return false;
+
/* Now that we are sure this is a backchannel call,
* advance to the RPC header.
*/
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-01 21:38:28 +0300