down_read(&active_config->nmc_range_tree_lock);
nm_member_reclassify_nodemap(nodemap);
up_read(&active_config->nmc_range_tree_lock);
- mutex_unlock(&active_config_lock);
-
- if (!list_empty(&nodemap->nm_member_list))
- CWARN("nodemap_destroy failed to reclassify all members\n");
write_lock(&nodemap->nm_idmap_lock);
idmap_delete_tree(nodemap);
write_unlock(&nodemap->nm_idmap_lock);
+ mutex_unlock(&active_config_lock);
+
+ if (!list_empty(&nodemap->nm_member_list))
+ CWARN("nodemap_destroy failed to reclassify all members\n");
+
nm_member_delete_list(nodemap);
OBD_FREE_PTR(nodemap);
/**
* Functions used for the cfs_hash
*/
-static void nodemap_getref(struct lu_nodemap *nodemap)
+void nodemap_getref(struct lu_nodemap *nodemap)
{
atomic_inc(&nodemap->nm_refcount);
+ CDEBUG(D_INFO, "GETting nodemap %s(p=%p) : new refcount %d\n",
+ nodemap->nm_name, nodemap, atomic_read(&nodemap->nm_refcount));
}
/**
*/
void nodemap_putref(struct lu_nodemap *nodemap)
{
- LASSERT(nodemap != NULL);
+ if (!nodemap)
+ return;
+
LASSERT(atomic_read(&nodemap->nm_refcount) > 0);
+ CDEBUG(D_INFO, "PUTting nodemap %s(p=%p) : new refcount %d\n",
+ nodemap->nm_name, nodemap,
+ atomic_read(&nodemap->nm_refcount) - 1);
+
if (atomic_dec_and_test(&nodemap->nm_refcount))
nodemap_destroy(nodemap);
}
+EXPORT_SYMBOL(nodemap_putref);
static __u32 nodemap_hashfn(struct cfs_hash *hash_body,
const void *key, unsigned mask)
* \param nid nid to classify
* \retval nodemap nodemap containing the nid
* \retval default_nodemap default nodemap
+ * \retval -EINVAL LO nid given without other local nid
*/
struct lu_nodemap *nodemap_classify_nid(lnet_nid_t nid)
{
struct lu_nid_range *range;
struct lu_nodemap *nodemap;
+ int rc;
+
+ ENTRY;
+
+ /* don't use 0@lo, use the first non-lo local NID instead */
+ if (LNET_NETTYP(LNET_NIDNET(nid)) == LOLND) {
+ lnet_process_id_t id;
+ int i = 0;
+
+ do {
+ rc = LNetGetId(i++, &id);
+ if (rc < 0)
+ RETURN(ERR_PTR(-EINVAL));
+ } while (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND);
+
+ nid = id.nid;
+ CDEBUG(D_INFO, "found nid %s\n", libcfs_nid2str(nid));
+ }
range = range_search(&active_config->nmc_range_tree, nid);
if (range != NULL)
else
nodemap = active_config->nmc_default_nodemap;
+ LASSERT(nodemap != NULL);
nodemap_getref(nodemap);
- return nodemap;
+ RETURN(nodemap);
}
/**
* \param nid nid to add to the members
* \param exp obd_export structure for the connection
* that is being added
- * \retval -EINVAL export is NULL
+ * \retval -EINVAL export is NULL, or has invalid NID
* \retval -EEXIST export is already member of a nodemap
*/
int nodemap_add_member(lnet_nid_t nid, struct obd_export *exp)
{
- struct lu_nodemap *nodemap;
- int rc;
+ struct lu_nodemap *nodemap;
+ int rc = 0;
+ ENTRY;
mutex_lock(&active_config_lock);
down_read(&active_config->nmc_range_tree_lock);
nodemap = nodemap_classify_nid(nid);
- rc = nm_member_add(nodemap, exp);
+
+ if (IS_ERR(nodemap)) {
+ CWARN("%s: error adding to nodemap, no valid NIDs found\n",
+ exp->exp_obd->obd_name);
+ rc = -EINVAL;
+ } else {
+ rc = nm_member_add(nodemap, exp);
+ }
up_read(&active_config->nmc_range_tree_lock);
mutex_unlock(&active_config_lock);
- nodemap_putref(nodemap);
+ if (!IS_ERR(nodemap))
+ nodemap_putref(nodemap);
- return rc;
+ RETURN(rc);
}
EXPORT_SYMBOL(nodemap_add_member);
*/
void nodemap_del_member(struct obd_export *exp)
{
- struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
+ struct lu_nodemap *nodemap;
+
+ ENTRY;
+
+ /* using ac lock to prevent nodemap reclassification while deleting */
+ mutex_lock(&active_config_lock);
+
+ /* use of ted_nodemap is protected by active_config_lock. we take an
+ * extra reference to make sure nodemap isn't destroyed under
+ * active_config_lock
+ */
+ nodemap = exp->exp_target_data.ted_nodemap;
+ if (nodemap == NULL)
+ goto out;
+ else
+ nodemap_getref(nodemap);
+
+ mutex_lock(&nodemap->nm_member_list_lock);
+ nm_member_del(nodemap, exp);
+ mutex_unlock(&nodemap->nm_member_list_lock);
+
+out:
+ mutex_unlock(&active_config_lock);
+
+ if (nodemap)
+ nodemap_putref(nodemap);
- if (nodemap != NULL)
- nm_member_del(nodemap, exp);
+ EXIT;
}
EXPORT_SYMBOL(nodemap_del_member);
EXPORT_SYMBOL(nodemap_del_idmap);
/**
+ * Get nodemap assigned to given export. Takes a reference on the nodemap.
+ *
+ * Note that this function may return either NULL, or an ERR_PTR()
+ * or a valid nodemap pointer. All of the functions accessing the
+ * returned nodemap can check IS_ERR(nodemap) to see if an error is
+ * returned. NULL is not considered an error, which is OK since this
+ * is a valid case if nodemap are not in use. All nodemap handling
+ * functions must check for nodemap == NULL and do nothing, and the
+ * nodemap returned from this function should not be dereferenced.
+ *
+ * \param export export to get nodemap for
+ *
+ * \retval pointer to nodemap on success
+ * \retval NULL nodemap subsystem disabled
+ * \retval -EACCES export does not have nodemap assigned
+ */
+struct lu_nodemap *nodemap_get_from_exp(struct obd_export *exp)
+{
+ struct lu_nodemap *nodemap;
+
+ ENTRY;
+
+ if (!nodemap_active)
+ RETURN(NULL);
+
+ spin_lock(&exp->exp_target_data.ted_nodemap_lock);
+ nodemap = exp->exp_target_data.ted_nodemap;
+ if (nodemap)
+ nodemap_getref(nodemap);
+ spin_unlock(&exp->exp_target_data.ted_nodemap_lock);
+
+ if (!nodemap) {
+ CDEBUG(D_INFO, "%s: nodemap null on export %s (at %s)\n",
+ exp->exp_obd->obd_name,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp));
+ RETURN(ERR_PTR(-EACCES));
+ }
+
+ RETURN(nodemap);
+}
+EXPORT_SYMBOL(nodemap_get_from_exp);
+
+/**
* mapping function for nodemap idmaps
*
* \param nodemap lu_nodemap structure defining nodemap
struct lu_idmap *idmap = NULL;
__u32 found_id;
+ ENTRY;
+
if (!nodemap_active)
goto out;
else
found_id = idmap->id_fs;
read_unlock(&nodemap->nm_idmap_lock);
- return found_id;
+ RETURN(found_id);
squash:
if (id_type == NODEMAP_UID)
- return nodemap->nm_squash_uid;
+ RETURN(nodemap->nm_squash_uid);
else
- return nodemap->nm_squash_gid;
+ RETURN(nodemap->nm_squash_gid);
out:
- return id;
+ RETURN(id);
}
EXPORT_SYMBOL(nodemap_map_id);
}
list_add(&range->rn_list, &nodemap->nm_ranges);
- nm_member_reclassify_nodemap(config->nmc_default_nodemap);
+
+ /* nodemaps have no members if they aren't on the active config */
+ if (config == active_config)
+ nm_member_reclassify_nodemap(config->nmc_default_nodemap);
+
up_write(&config->nmc_range_tree_lock);
/* if range_id is non-zero, we are loading from disk */
if (range_id == 0)
rc = nodemap_idx_range_add(range, nid);
- nm_member_revoke_locks(config->nmc_default_nodemap);
- nm_member_revoke_locks(nodemap);
+ if (config == active_config) {
+ nm_member_revoke_locks(config->nmc_default_nodemap);
+ nm_member_revoke_locks(nodemap);
+ }
out:
return rc;
EXPORT_SYMBOL(nodemap_del_range);
/**
+ * set fileset on nodemap
+ * \param name nodemap to set fileset on
+ * \param fileset string containing fileset
+ * \retval 0 on success
+ *
+ * set a fileset on the named nodemap
+ */
+static int nodemap_set_fileset_helper(struct nodemap_config *config,
+ struct lu_nodemap *nodemap,
+ const char *fileset)
+{
+ int rc = 0;
+
+ /* we allow fileset = "" which means clear fileset info */
+ if (fileset == NULL || (fileset[0] != 0 && fileset[0] != '/'))
+ rc = -EINVAL;
+ else if (strlcpy(nodemap->nm_fileset, fileset,
+ sizeof(nodemap->nm_fileset)) >=
+ sizeof(nodemap->nm_fileset))
+ rc = -ENAMETOOLONG;
+
+ return rc;
+}
+
+int nodemap_set_fileset(const char *name, const char *fileset)
+{
+ struct lu_nodemap *nodemap = NULL;
+ int rc = 0;
+
+ mutex_lock(&active_config_lock);
+ nodemap = nodemap_lookup(name);
+ if (IS_ERR(nodemap)) {
+ mutex_unlock(&active_config_lock);
+ GOTO(out, rc = PTR_ERR(nodemap));
+ }
+
+ if (is_default_nodemap(nodemap))
+ rc = -EINVAL;
+ else
+ rc = nodemap_set_fileset_helper(active_config, nodemap,
+ fileset);
+ mutex_unlock(&active_config_lock);
+
+ nodemap_putref(nodemap);
+out:
+ return rc;
+}
+EXPORT_SYMBOL(nodemap_set_fileset);
+
+/**
+ * get fileset defined on nodemap
+ * \param nodemap nodemap to get fileset from
+ * \retval fileset name, or NULL if not defined or not activated
+ *
+ * get the fileset defined on the nodemap
+ */
+char *nodemap_get_fileset(const struct lu_nodemap *nodemap)
+{
+ if (!nodemap_active || is_default_nodemap(nodemap))
+ return NULL;
+ else
+ return (char *)nodemap->nm_fileset;
+}
+EXPORT_SYMBOL(nodemap_get_fileset);
+
+/**
* Nodemap constructor
*
* Creates an lu_nodemap structure and assigns sane default
if (is_default || default_nodemap == NULL) {
nodemap->nmf_trust_client_ids = 0;
nodemap->nmf_allow_root_access = 0;
+ nodemap->nmf_deny_unknown = 0;
nodemap->nm_squash_uid = NODEMAP_NOBODY_UID;
nodemap->nm_squash_gid = NODEMAP_NOBODY_GID;
default_nodemap->nmf_trust_client_ids;
nodemap->nmf_allow_root_access =
default_nodemap->nmf_allow_root_access;
+ nodemap->nmf_deny_unknown =
+ default_nodemap->nmf_deny_unknown;
nodemap->nm_squash_uid = default_nodemap->nm_squash_uid;
nodemap->nm_squash_gid = default_nodemap->nm_squash_gid;
+ nodemap->nm_fileset[0] = 0;
}
return nodemap;
}
/**
- * update flag to turn on or off nodemap functions
+ * Set the nmf_deny_unknown flag to true or false.
* \param name nodemap name
- * \param admin_string string containing updated value
+ * \param deny_unknown if true, squashed users will get EACCES
+ * \retval 0 on success
+ *
+ */
+int nodemap_set_deny_unknown(const char *name, bool deny_unknown)
+{
+ struct lu_nodemap *nodemap = NULL;
+ int rc = 0;
+
+ mutex_lock(&active_config_lock);
+ nodemap = nodemap_lookup(name);
+ mutex_unlock(&active_config_lock);
+ if (IS_ERR(nodemap))
+ GOTO(out, rc = PTR_ERR(nodemap));
+
+ nodemap->nmf_deny_unknown = deny_unknown;
+ rc = nodemap_idx_nodemap_update(nodemap);
+
+ nm_member_revoke_locks(nodemap);
+ nodemap_putref(nodemap);
+out:
+ return rc;
+}
+EXPORT_SYMBOL(nodemap_set_deny_unknown);
+
+/**
+ * Set the nmf_allow_root_access flag to true or false.
+ * \param name nodemap name
+ * \param allow_root if true, nodemap will not squash the root user
* \retval 0 on success
*
- * Update admin flag to turn on or off nodemap functions.
*/
int nodemap_set_allow_root(const char *name, bool allow_root)
{
EXPORT_SYMBOL(nodemap_set_allow_root);
/**
- * updated trust_client_ids flag for nodemap
+ * Set the nmf_trust_client_ids flag to true or false.
*
- * \param name nodemap name
- * \param trust_string new value for trust flag
+ * \param name nodemap name
+ * \param trust_client_ids if true, nodemap will not map its IDs
* \retval 0 on success
*
- * Update the trust_client_ids flag for a nodemap.
*/
int nodemap_set_trust_client_ids(const char *name, bool trust_client_ids)
{
EXPORT_SYMBOL(nodemap_set_trust_client_ids);
/**
- * update the squash_uid for a nodemap
+ * Update the squash_uid for a nodemap.
*
* \param name nodemap name
- * \param uid_string string containing new squash_uid value
+ * \param uid the new uid to squash unknown users to
* \retval 0 on success
*
* Update the squash_uid for a nodemap. The squash_uid is the uid
* Update the squash_gid for a nodemap.
*
* \param name nodemap name
- * \param gid_string string containing new squash_gid value
+ * \param gid the new gid to squash unknown gids to
* \retval 0 on success
*
* Update the squash_gid for a nodemap. The squash_uid is the gid
*/
bool nodemap_can_setquota(const struct lu_nodemap *nodemap)
{
- return !nodemap_active || nodemap->nmf_allow_root_access;
+ return !nodemap_active || (nodemap && nodemap->nmf_allow_root_access);
}
EXPORT_SYMBOL(nodemap_can_setquota);
*/
lprocfs_nodemap_remove(nodemap->nm_pde_data);
nodemap->nm_pde_data = NULL;
+
+ /* reclassify all member exports from nodemap, so they put their refs */
+ down_read(&active_config->nmc_range_tree_lock);
+ nm_member_reclassify_nodemap(nodemap);
+ up_read(&active_config->nmc_range_tree_lock);
+
+ if (!list_empty(&nodemap->nm_member_list))
+ CWARN("nodemap_del failed to reclassify all members\n");
+
mutex_unlock(&active_config_lock);
nodemap_putref(nodemap);
return 0;
}
+struct nodemap_config *nodemap_config_alloc(void)
+{
+ struct nodemap_config *config;
+ int rc = 0;
+
+ OBD_ALLOC_PTR(config);
+ if (config == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ rc = nodemap_init_hash(config);
+ if (rc != 0) {
+ OBD_FREE_PTR(config);
+ return ERR_PTR(rc);
+ }
+
+ init_rwsem(&config->nmc_range_tree_lock);
+
+ return config;
+}
+EXPORT_SYMBOL(nodemap_config_alloc);
+
/**
* Walk the nodemap_hash and remove all nodemaps.
*/
-void nodemap_config_cleanup(struct nodemap_config *config)
+void nodemap_config_dealloc(struct nodemap_config *config)
{
struct lu_nodemap *nodemap = NULL;
struct lu_nodemap *nodemap_temp;
*/
list_for_each_entry_safe(nodemap, nodemap_temp, &nodemap_list_head,
nm_list) {
+ mutex_lock(&active_config_lock);
down_write(&config->nmc_range_tree_lock);
+
+ /* move members to new config, requires ac lock */
+ nm_member_reclassify_nodemap(nodemap);
list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
rn_list)
range_delete(&config->nmc_range_tree, range);
up_write(&config->nmc_range_tree_lock);
+ mutex_unlock(&active_config_lock);
+ /* putref must be outside of ac lock if nm could be destroyed */
nodemap_putref(nodemap);
}
-}
-
-struct nodemap_config *nodemap_config_alloc(void)
-{
- struct nodemap_config *config;
- int rc = 0;
-
- OBD_ALLOC_PTR(config);
- if (config == NULL)
- return ERR_PTR(-ENOMEM);
-
- rc = nodemap_init_hash(config);
- if (rc != 0) {
- OBD_FREE_PTR(config);
- return ERR_PTR(rc);
- }
-
- init_rwsem(&config->nmc_range_tree_lock);
-
- return config;
-}
-
-void nodemap_config_dealloc(struct nodemap_config *config)
-{
- nodemap_config_cleanup(config);
OBD_FREE_PTR(config);
}
+EXPORT_SYMBOL(nodemap_config_dealloc);
static int nm_hash_list_cb(struct cfs_hash *hs, struct cfs_hash_bd *bd,
struct hlist_node *hnode,
ENTRY;
LASSERT(active_config != config);
+ LASSERT(config->nmc_default_nodemap);
mutex_lock(&active_config_lock);
up_read(&active_config->nmc_range_tree_lock);
mutex_unlock(&active_config_lock);
+ if (IS_ERR(nodemap))
+ return;
+
strncpy(name_buf, nodemap->nm_name, name_len);
if (name_len > 0)
name_buf[name_len - 1] = '\0';
EXPORT_SYMBOL(nodemap_test_nid);
/**
- * Returns the id mapping for a given nid/id pair. Useful for testing the
+ * Passes back the id mapping for a given nid/id pair. Useful for testing the
* nodemap configuration to make sure it is working as expected.
*
* \param nid nid to classify
* \param idtype uid or gid
* \param client_id id to map to fs
+ * \param fs_id_buf pointer to save mapped fs_id to
*
- * \retval the mapped fs_id of the given client_id
+ * \retval 0 success
+ * \retval -EINVAL invalid NID
*/
-__u32 nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
- __u32 client_id)
+int nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
+ __u32 client_id, __u32 *fs_id)
{
struct lu_nodemap *nodemap;
- __u32 fs_id;
mutex_lock(&active_config_lock);
down_read(&active_config->nmc_range_tree_lock);
up_read(&active_config->nmc_range_tree_lock);
mutex_unlock(&active_config_lock);
- fs_id = nodemap_map_id(nodemap, idtype, NODEMAP_CLIENT_TO_FS,
+ if (IS_ERR(nodemap))
+ return PTR_ERR(nodemap);
+
+ *fs_id = nodemap_map_id(nodemap, idtype, NODEMAP_CLIENT_TO_FS,
client_id);
nodemap_putref(nodemap);
- return fs_id;
+ return 0;
}
EXPORT_SYMBOL(nodemap_test_id);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff