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Diffstat (limited to 'fs/nfs/nfs4proc.c')
-rw-r--r--fs/nfs/nfs4proc.c533
1 files changed, 465 insertions, 68 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 989bb9d3074d..659990c0109e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -105,9 +105,6 @@ nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
return NULL;
- if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2)
- return NULL;
-
err = security_dentry_init_security(dentry, sattr->ia_mode,
&dentry->d_name, (void **)&label->label, &label->len);
if (err == 0)
@@ -384,6 +381,14 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
case -NFS4ERR_STALE_CLIENTID:
nfs4_schedule_lease_recovery(clp);
goto wait_on_recovery;
+ case -NFS4ERR_MOVED:
+ ret = nfs4_schedule_migration_recovery(server);
+ if (ret < 0)
+ break;
+ goto wait_on_recovery;
+ case -NFS4ERR_LEASE_MOVED:
+ nfs4_schedule_lease_moved_recovery(clp);
+ goto wait_on_recovery;
#if defined(CONFIG_NFS_V4_1)
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
@@ -431,6 +436,8 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
return nfs4_map_errors(ret);
wait_on_recovery:
ret = nfs4_wait_clnt_recover(clp);
+ if (test_bit(NFS_MIG_FAILED, &server->mig_status))
+ return -EIO;
if (ret == 0)
exception->retry = 1;
return ret;
@@ -912,6 +919,7 @@ struct nfs4_opendata {
struct iattr attrs;
unsigned long timestamp;
unsigned int rpc_done : 1;
+ unsigned int file_created : 1;
unsigned int is_recover : 1;
int rpc_status;
int cancelled;
@@ -1317,31 +1325,24 @@ _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
int ret;
if (!data->rpc_done) {
- ret = data->rpc_status;
- goto err;
+ if (data->rpc_status) {
+ ret = data->rpc_status;
+ goto err;
+ }
+ /* cached opens have already been processed */
+ goto update;
}
- ret = -ESTALE;
- if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) ||
- !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) ||
- !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE))
- goto err;
-
- ret = -ENOMEM;
- state = nfs4_get_open_state(inode, data->owner);
- if (state == NULL)
- goto err;
-
ret = nfs_refresh_inode(inode, &data->f_attr);
if (ret)
goto err;
- nfs_setsecurity(inode, &data->f_attr, data->f_label);
-
if (data->o_res.delegation_type != 0)
nfs4_opendata_check_deleg(data, state);
+update:
update_open_stateid(state, &data->o_res.stateid, NULL,
data->o_arg.fmode);
+ atomic_inc(&state->count);
return state;
err:
@@ -1574,6 +1575,12 @@ static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct
/* Don't recall a delegation if it was lost */
nfs4_schedule_lease_recovery(server->nfs_client);
return -EAGAIN;
+ case -NFS4ERR_MOVED:
+ nfs4_schedule_migration_recovery(server);
+ return -EAGAIN;
+ case -NFS4ERR_LEASE_MOVED:
+ nfs4_schedule_lease_moved_recovery(server->nfs_client);
+ return -EAGAIN;
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
@@ -1946,8 +1953,13 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
nfs_fattr_map_and_free_names(server, &data->f_attr);
- if (o_arg->open_flags & O_CREAT)
+ if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
+ if (o_arg->open_flags & O_EXCL)
+ data->file_created = 1;
+ else if (o_res->cinfo.before != o_res->cinfo.after)
+ data->file_created = 1;
+ }
if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
server->caps &= ~NFS_CAP_POSIX_LOCK;
if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
@@ -2191,7 +2203,8 @@ static int _nfs4_do_open(struct inode *dir,
struct nfs_open_context *ctx,
int flags,
struct iattr *sattr,
- struct nfs4_label *label)
+ struct nfs4_label *label,
+ int *opened)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -2261,6 +2274,8 @@ static int _nfs4_do_open(struct inode *dir,
nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
}
}
+ if (opendata->file_created)
+ *opened |= FILE_CREATED;
if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
*ctx_th = opendata->f_attr.mdsthreshold;
@@ -2289,7 +2304,8 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir,
struct nfs_open_context *ctx,
int flags,
struct iattr *sattr,
- struct nfs4_label *label)
+ struct nfs4_label *label,
+ int *opened)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_exception exception = { };
@@ -2297,7 +2313,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir,
int status;
do {
- status = _nfs4_do_open(dir, ctx, flags, sattr, label);
+ status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened);
res = ctx->state;
trace_nfs4_open_file(ctx, flags, status);
if (status == 0)
@@ -2659,7 +2675,8 @@ out:
}
static struct inode *
-nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
+nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx,
+ int open_flags, struct iattr *attr, int *opened)
{
struct nfs4_state *state;
struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
@@ -2667,7 +2684,7 @@ nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags
label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
/* Protect against concurrent sillydeletes */
- state = nfs4_do_open(dir, ctx, open_flags, attr, label);
+ state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened);
nfs4_label_release_security(label);
@@ -2686,6 +2703,10 @@ static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
nfs4_close_state(ctx->state, ctx->mode);
}
+#define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
+#define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
+#define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
+
static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
{
struct nfs4_server_caps_arg args = {
@@ -2701,12 +2722,25 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
if (status == 0) {
+ /* Sanity check the server answers */
+ switch (server->nfs_client->cl_minorversion) {
+ case 0:
+ res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK;
+ res.attr_bitmask[2] = 0;
+ break;
+ case 1:
+ res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK;
+ break;
+ case 2:
+ res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
+ }
memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
- NFS_CAP_CTIME|NFS_CAP_MTIME);
+ NFS_CAP_CTIME|NFS_CAP_MTIME|
+ NFS_CAP_SECURITY_LABEL);
if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
server->caps |= NFS_CAP_ACLS;
if (res.has_links != 0)
@@ -2735,14 +2769,12 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
#endif
memcpy(server->attr_bitmask_nl, res.attr_bitmask,
sizeof(server->attr_bitmask));
+ server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
- if (server->caps & NFS_CAP_SECURITY_LABEL) {
- server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
- res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
- }
memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
+ server->cache_consistency_bitmask[2] = 0;
server->acl_bitmask = res.acl_bitmask;
server->fh_expire_type = res.fh_expire_type;
}
@@ -2853,11 +2885,24 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
int status = -EPERM;
size_t i;
- for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
- status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
- if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
- continue;
- break;
+ if (server->auth_info.flavor_len > 0) {
+ /* try each flavor specified by user */
+ for (i = 0; i < server->auth_info.flavor_len; i++) {
+ status = nfs4_lookup_root_sec(server, fhandle, info,
+ server->auth_info.flavors[i]);
+ if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
+ continue;
+ break;
+ }
+ } else {
+ /* no flavors specified by user, try default list */
+ for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
+ status = nfs4_lookup_root_sec(server, fhandle, info,
+ flav_array[i]);
+ if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
+ continue;
+ break;
+ }
}
/*
@@ -2899,9 +2944,6 @@ int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
status = nfs4_lookup_root(server, fhandle, info);
if (status != -NFS4ERR_WRONGSEC)
break;
- /* Did user force a 'sec=' mount option? */
- if (server->flags & NFS_MOUNT_SECFLAVOUR)
- break;
default:
status = nfs4_do_find_root_sec(server, fhandle, info);
}
@@ -2970,11 +3012,16 @@ static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
status = nfs4_proc_fs_locations(client, dir, name, locations, page);
if (status != 0)
goto out;
- /* Make sure server returned a different fsid for the referral */
+
+ /*
+ * If the fsid didn't change, this is a migration event, not a
+ * 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)) {
dprintk("%s: server did not return a different fsid for"
" a referral at %s\n", __func__, name->name);
- status = -EIO;
+ status = -NFS4ERR_MOVED;
goto out;
}
/* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
@@ -3154,9 +3201,6 @@ static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
err = -EPERM;
if (client != *clnt)
goto out;
- /* No security negotiation if the user specified 'sec=' */
- if (NFS_SERVER(dir)->flags & NFS_MOUNT_SECFLAVOUR)
- goto out;
client = nfs4_create_sec_client(client, dir, name);
if (IS_ERR(client))
return PTR_ERR(client);
@@ -3332,6 +3376,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
struct nfs4_label l, *ilabel = NULL;
struct nfs_open_context *ctx;
struct nfs4_state *state;
+ int opened = 0;
int status = 0;
ctx = alloc_nfs_open_context(dentry, FMODE_READ);
@@ -3341,7 +3386,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
sattr->ia_mode &= ~current_umask();
- state = nfs4_do_open(dir, ctx, flags, sattr, ilabel);
+ state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened);
if (IS_ERR(state)) {
status = PTR_ERR(state);
goto out;
@@ -3726,9 +3771,8 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
};
int status;
- dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
- dentry->d_parent->d_name.name,
- dentry->d_name.name,
+ dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__,
+ dentry,
(unsigned long long)cookie);
nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
res.pgbase = args.pgbase;
@@ -4209,7 +4253,13 @@ static void nfs4_renew_done(struct rpc_task *task, void *calldata)
unsigned long timestamp = data->timestamp;
trace_nfs4_renew_async(clp, task->tk_status);
- if (task->tk_status < 0) {
+ switch (task->tk_status) {
+ case 0:
+ break;
+ case -NFS4ERR_LEASE_MOVED:
+ nfs4_schedule_lease_moved_recovery(clp);
+ break;
+ default:
/* Unless we're shutting down, schedule state recovery! */
if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
return;
@@ -4563,7 +4613,7 @@ static int _nfs4_get_security_label(struct inode *inode, void *buf,
struct nfs4_label label = {0, 0, buflen, buf};
u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
- struct nfs4_getattr_arg args = {
+ struct nfs4_getattr_arg arg = {
.fh = NFS_FH(inode),
.bitmask = bitmask,
};
@@ -4574,14 +4624,14 @@ static int _nfs4_get_security_label(struct inode *inode, void *buf,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
- .rpc_argp = &args,
+ .rpc_argp = &arg,
.rpc_resp = &res,
};
int ret;
nfs_fattr_init(&fattr);
- ret = rpc_call_sync(server->client, &msg, 0);
+ ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0);
if (ret)
return ret;
if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
@@ -4618,7 +4668,7 @@ static int _nfs4_do_set_security_label(struct inode *inode,
struct iattr sattr = {0};
struct nfs_server *server = NFS_SERVER(inode);
const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
- struct nfs_setattrargs args = {
+ struct nfs_setattrargs arg = {
.fh = NFS_FH(inode),
.iap = &sattr,
.server = server,
@@ -4632,14 +4682,14 @@ static int _nfs4_do_set_security_label(struct inode *inode,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
- .rpc_argp = &args,
+ .rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
- nfs4_stateid_copy(&args.stateid, &zero_stateid);
+ nfs4_stateid_copy(&arg.stateid, &zero_stateid);
- status = rpc_call_sync(server->client, &msg, 0);
+ status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
if (status)
dprintk("%s failed: %d\n", __func__, status);
@@ -4723,17 +4773,24 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
if (state == NULL)
break;
if (nfs4_schedule_stateid_recovery(server, state) < 0)
- goto stateid_invalid;
+ goto recovery_failed;
goto wait_on_recovery;
case -NFS4ERR_EXPIRED:
if (state != NULL) {
if (nfs4_schedule_stateid_recovery(server, state) < 0)
- goto stateid_invalid;
+ goto recovery_failed;
}
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
nfs4_schedule_lease_recovery(clp);
goto wait_on_recovery;
+ case -NFS4ERR_MOVED:
+ if (nfs4_schedule_migration_recovery(server) < 0)
+ goto recovery_failed;
+ goto wait_on_recovery;
+ case -NFS4ERR_LEASE_MOVED:
+ nfs4_schedule_lease_moved_recovery(clp);
+ goto wait_on_recovery;
#if defined(CONFIG_NFS_V4_1)
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
@@ -4745,29 +4802,28 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
dprintk("%s ERROR %d, Reset session\n", __func__,
task->tk_status);
nfs4_schedule_session_recovery(clp->cl_session, task->tk_status);
- task->tk_status = 0;
- return -EAGAIN;
+ goto restart_call;
#endif /* CONFIG_NFS_V4_1 */
case -NFS4ERR_DELAY:
nfs_inc_server_stats(server, NFSIOS_DELAY);
case -NFS4ERR_GRACE:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
- task->tk_status = 0;
- return -EAGAIN;
case -NFS4ERR_RETRY_UNCACHED_REP:
case -NFS4ERR_OLD_STATEID:
- task->tk_status = 0;
- return -EAGAIN;
+ goto restart_call;
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
-stateid_invalid:
+recovery_failed:
task->tk_status = -EIO;
return 0;
wait_on_recovery:
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
+ if (test_bit(NFS_MIG_FAILED, &server->mig_status))
+ goto recovery_failed;
+restart_call:
task->tk_status = 0;
return -EAGAIN;
}
@@ -5094,6 +5150,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock
status = 0;
}
request->fl_ops->fl_release_private(request);
+ request->fl_ops = NULL;
out:
return status;
}
@@ -5767,6 +5824,7 @@ struct nfs_release_lockowner_data {
struct nfs_release_lockowner_args args;
struct nfs4_sequence_args seq_args;
struct nfs4_sequence_res seq_res;
+ unsigned long timestamp;
};
static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata)
@@ -5774,12 +5832,27 @@ static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata
struct nfs_release_lockowner_data *data = calldata;
nfs40_setup_sequence(data->server,
&data->seq_args, &data->seq_res, task);
+ data->timestamp = jiffies;
}
static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata)
{
struct nfs_release_lockowner_data *data = calldata;
+ struct nfs_server *server = data->server;
+
nfs40_sequence_done(task, &data->seq_res);
+
+ switch (task->tk_status) {
+ case 0:
+ renew_lease(server, data->timestamp);
+ break;
+ case -NFS4ERR_STALE_CLIENTID:
+ case -NFS4ERR_EXPIRED:
+ case -NFS4ERR_LEASE_MOVED:
+ case -NFS4ERR_DELAY:
+ if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN)
+ rpc_restart_call_prepare(task);
+ }
}
static void nfs4_release_lockowner_release(void *calldata)
@@ -5978,6 +6051,283 @@ int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
return err;
}
+/*
+ * This operation also signals the server that this client is
+ * performing migration recovery. The server can stop returning
+ * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
+ * appended to this compound to identify the client ID which is
+ * performing recovery.
+ */
+static int _nfs40_proc_get_locations(struct inode *inode,
+ struct nfs4_fs_locations *locations,
+ struct page *page, struct rpc_cred *cred)
+{
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct rpc_clnt *clnt = server->client;
+ u32 bitmask[2] = {
+ [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
+ };
+ struct nfs4_fs_locations_arg args = {
+ .clientid = server->nfs_client->cl_clientid,
+ .fh = NFS_FH(inode),
+ .page = page,
+ .bitmask = bitmask,
+ .migration = 1, /* skip LOOKUP */
+ .renew = 1, /* append RENEW */
+ };
+ struct nfs4_fs_locations_res res = {
+ .fs_locations = locations,
+ .migration = 1,
+ .renew = 1,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ .rpc_cred = cred,
+ };
+ unsigned long now = jiffies;
+ int status;
+
+ nfs_fattr_init(&locations->fattr);
+ locations->server = server;
+ locations->nlocations = 0;
+
+ nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
+ nfs4_set_sequence_privileged(&args.seq_args);
+ status = nfs4_call_sync_sequence(clnt, server, &msg,
+ &args.seq_args, &res.seq_res);
+ if (status)
+ return status;
+
+ renew_lease(server, now);
+ return 0;
+}
+
+#ifdef CONFIG_NFS_V4_1
+
+/*
+ * This operation also signals the server that this client is
+ * performing migration recovery. The server can stop asserting
+ * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
+ * performing this operation is identified in the SEQUENCE
+ * operation in this compound.
+ *
+ * When the client supports GETATTR(fs_locations_info), it can
+ * be plumbed in here.
+ */
+static int _nfs41_proc_get_locations(struct inode *inode,
+ struct nfs4_fs_locations *locations,
+ struct page *page, struct rpc_cred *cred)
+{
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct rpc_clnt *clnt = server->client;
+ u32 bitmask[2] = {
+ [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
+ };
+ struct nfs4_fs_locations_arg args = {
+ .fh = NFS_FH(inode),
+ .page = page,
+ .bitmask = bitmask,
+ .migration = 1, /* skip LOOKUP */
+ };
+ struct nfs4_fs_locations_res res = {
+ .fs_locations = locations,
+ .migration = 1,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ .rpc_cred = cred,
+ };
+ int status;
+
+ nfs_fattr_init(&locations->fattr);
+ locations->server = server;
+ locations->nlocations = 0;
+
+ nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
+ nfs4_set_sequence_privileged(&args.seq_args);
+ status = nfs4_call_sync_sequence(clnt, server, &msg,
+ &args.seq_args, &res.seq_res);
+ if (status == NFS4_OK &&
+ res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
+ status = -NFS4ERR_LEASE_MOVED;
+ return status;
+}
+
+#endif /* CONFIG_NFS_V4_1 */
+
+/**
+ * nfs4_proc_get_locations - discover locations for a migrated FSID
+ * @inode: inode on FSID that is migrating
+ * @locations: result of query
+ * @page: buffer
+ * @cred: credential to use for this operation
+ *
+ * Returns NFS4_OK on success, a negative NFS4ERR status code if the
+ * operation failed, or a negative errno if a local error occurred.
+ *
+ * On success, "locations" is filled in, but if the server has
+ * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
+ * asserted.
+ *
+ * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
+ * from this client that require migration recovery.
+ */
+int nfs4_proc_get_locations(struct inode *inode,
+ struct nfs4_fs_locations *locations,
+ struct page *page, struct rpc_cred *cred)
+{
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct nfs_client *clp = server->nfs_client;
+ const struct nfs4_mig_recovery_ops *ops =
+ clp->cl_mvops->mig_recovery_ops;
+ struct nfs4_exception exception = { };
+ int status;
+
+ dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
+ (unsigned long long)server->fsid.major,
+ (unsigned long long)server->fsid.minor,
+ clp->cl_hostname);
+ nfs_display_fhandle(NFS_FH(inode), __func__);
+
+ do {
+ status = ops->get_locations(inode, locations, page, cred);
+ if (status != -NFS4ERR_DELAY)
+ break;
+ nfs4_handle_exception(server, status, &exception);
+ } while (exception.retry);
+ return status;
+}
+
+/*
+ * This operation also signals the server that this client is
+ * performing "lease moved" recovery. The server can stop
+ * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
+ * is appended to this compound to identify the client ID which is
+ * performing recovery.
+ */
+static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
+{
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
+ struct rpc_clnt *clnt = server->client;
+ struct nfs4_fsid_present_arg args = {
+ .fh = NFS_FH(inode),
+ .clientid = clp->cl_clientid,
+ .renew = 1, /* append RENEW */
+ };
+ struct nfs4_fsid_present_res res = {
+ .renew = 1,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ .rpc_cred = cred,
+ };
+ unsigned long now = jiffies;
+ int status;
+
+ res.fh = nfs_alloc_fhandle();
+ if (res.fh == NULL)
+ return -ENOMEM;
+
+ nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
+ nfs4_set_sequence_privileged(&args.seq_args);
+ status = nfs4_call_sync_sequence(clnt, server, &msg,
+ &args.seq_args, &res.seq_res);
+ nfs_free_fhandle(res.fh);
+ if (status)
+ return status;
+
+ do_renew_lease(clp, now);
+ return 0;
+}
+
+#ifdef CONFIG_NFS_V4_1
+
+/*
+ * This operation also signals the server that this client is
+ * performing "lease moved" recovery. The server can stop asserting
+ * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
+ * this operation is identified in the SEQUENCE operation in this
+ * compound.
+ */
+static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
+{
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct rpc_clnt *clnt = server->client;
+ struct nfs4_fsid_present_arg args = {
+ .fh = NFS_FH(inode),
+ };
+ struct nfs4_fsid_present_res res = {
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ .rpc_cred = cred,
+ };
+ int status;
+
+ res.fh = nfs_alloc_fhandle();
+ if (res.fh == NULL)
+ return -ENOMEM;
+
+ nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
+ nfs4_set_sequence_privileged(&args.seq_args);
+ status = nfs4_call_sync_sequence(clnt, server, &msg,
+ &args.seq_args, &res.seq_res);
+ nfs_free_fhandle(res.fh);
+ if (status == NFS4_OK &&
+ res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
+ status = -NFS4ERR_LEASE_MOVED;
+ return status;
+}
+
+#endif /* CONFIG_NFS_V4_1 */
+
+/**
+ * nfs4_proc_fsid_present - Is this FSID present or absent on server?
+ * @inode: inode on FSID to check
+ * @cred: credential to use for this operation
+ *
+ * Server indicates whether the FSID is present, moved, or not
+ * recognized. This operation is necessary to clear a LEASE_MOVED
+ * condition for this client ID.
+ *
+ * Returns NFS4_OK if the FSID is present on this server,
+ * -NFS4ERR_MOVED if the FSID is no longer present, a negative
+ * NFS4ERR code if some error occurred on the server, or a
+ * negative errno if a local failure occurred.
+ */
+int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
+{
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct nfs_client *clp = server->nfs_client;
+ const struct nfs4_mig_recovery_ops *ops =
+ clp->cl_mvops->mig_recovery_ops;
+ struct nfs4_exception exception = { };
+ int status;
+
+ dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
+ (unsigned long long)server->fsid.major,
+ (unsigned long long)server->fsid.minor,
+ clp->cl_hostname);
+ nfs_display_fhandle(NFS_FH(inode), __func__);
+
+ do {
+ status = ops->fsid_present(inode, cred);
+ if (status != -NFS4ERR_DELAY)
+ break;
+ nfs4_handle_exception(server, status, &exception);
+ } while (exception.retry);
+ return status;
+}
+
/**
* If 'use_integrity' is true and the state managment nfs_client
* cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
@@ -6264,8 +6614,14 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred,
struct nfs41_exchange_id_args args = {
.verifier = &verifier,
.client = clp,
+#ifdef CONFIG_NFS_V4_1_MIGRATION
+ .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
+ EXCHGID4_FLAG_BIND_PRINC_STATEID |
+ EXCHGID4_FLAG_SUPP_MOVED_MIGR,
+#else
.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
- EXCHGID4_FLAG_BIND_PRINC_STATEID,
+ EXCHGID4_FLAG_BIND_PRINC_STATEID,
+#endif
};
struct nfs41_exchange_id_res res = {
0
@@ -7564,8 +7920,10 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
{
int err;
struct page *page;
- rpc_authflavor_t flavor;
+ rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
struct nfs4_secinfo_flavors *flavors;
+ struct nfs4_secinfo4 *secinfo;
+ int i;
page = alloc_page(GFP_KERNEL);
if (!page) {
@@ -7587,9 +7945,34 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
if (err)
goto out_freepage;
- flavor = nfs_find_best_sec(flavors);
- if (err == 0)
- err = nfs4_lookup_root_sec(server, fhandle, info, flavor);
+ for (i = 0; i < flavors->num_flavors; i++) {
+ secinfo = &flavors->flavors[i];
+
+ switch (secinfo->flavor) {
+ case RPC_AUTH_NULL:
+ case RPC_AUTH_UNIX:
+ case RPC_AUTH_GSS:
+ flavor = rpcauth_get_pseudoflavor(secinfo->flavor,
+ &secinfo->flavor_info);
+ break;
+ default:
+ flavor = RPC_AUTH_MAXFLAVOR;
+ break;
+ }
+
+ if (!nfs_auth_info_match(&server->auth_info, flavor))
+ flavor = RPC_AUTH_MAXFLAVOR;
+
+ if (flavor != RPC_AUTH_MAXFLAVOR) {
+ err = nfs4_lookup_root_sec(server, fhandle,
+ info, flavor);
+ if (!err)
+ break;
+ }
+ }
+
+ if (flavor == RPC_AUTH_MAXFLAVOR)
+ err = -EPERM;
out_freepage:
put_page(page);
@@ -7851,6 +8234,18 @@ static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
};
#endif
+static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = {
+ .get_locations = _nfs40_proc_get_locations,
+ .fsid_present = _nfs40_proc_fsid_present,
+};
+
+#if defined(CONFIG_NFS_V4_1)
+static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = {
+ .get_locations = _nfs41_proc_get_locations,
+ .fsid_present = _nfs41_proc_fsid_present,
+};
+#endif /* CONFIG_NFS_V4_1 */
+
static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
.minor_version = 0,
.init_caps = NFS_CAP_READDIRPLUS
@@ -7866,6 +8261,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
.reboot_recovery_ops = &nfs40_reboot_recovery_ops,
.nograce_recovery_ops = &nfs40_nograce_recovery_ops,
.state_renewal_ops = &nfs40_state_renewal_ops,
+ .mig_recovery_ops = &nfs40_mig_recovery_ops,
};
#if defined(CONFIG_NFS_V4_1)
@@ -7886,6 +8282,7 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
.reboot_recovery_ops = &nfs41_reboot_recovery_ops,
.nograce_recovery_ops = &nfs41_nograce_recovery_ops,
.state_renewal_ops = &nfs41_state_renewal_ops,
+ .mig_recovery_ops = &nfs41_mig_recovery_ops,
};
#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.