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Unix SMB/CIFS implementation.
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Transparent registry backend handling
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Copyright (C) Jelmer Vernooij 2003-2007.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include "../lib/util/dlinklist.h"
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#include "lib/registry/registry.h"
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#include "system/filesys.h"
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uint32_t predefined_key;
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const char **elements;
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struct registry_local {
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const struct registry_operations *ops;
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struct reg_key_path path;
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struct mountpoint *prev, *next;
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struct registry_key global;
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struct reg_key_path path;
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struct hive_key *hive_key;
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struct registry_key *reg_import_hive_key(struct registry_context *ctx,
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struct hive_key *hive,
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uint32_t predefined_key,
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const char **elements)
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struct local_key *local_key;
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struct reg_key_path parent_path;
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parent_path.predefined_key = predefined_key;
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parent_path.elements = elements;
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local_key = talloc(ctx, struct local_key);
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local_key->hive_key = talloc_steal(local_key, hive);
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local_key->global.context = talloc_reference(local_key, ctx);
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local_key->path = parent_path;
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return (struct registry_key *)local_key;
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static WERROR local_open_key(TALLOC_CTX *mem_ctx,
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struct registry_key *parent,
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struct registry_key **result)
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char *orig = talloc_strdup(mem_ctx, path),
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*curend = strchr(orig, '\\');
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struct local_key *local_parent = talloc_get_type(parent,
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struct hive_key *curkey = local_parent->hive_key;
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const char **elements = NULL;
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if (local_parent->path.elements != NULL) {
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elements = talloc_array(mem_ctx, const char *,
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str_list_length(local_parent->path.elements) + 1);
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for (el = 0; local_parent->path.elements[el] != NULL; el++) {
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elements[el] = talloc_reference(elements,
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local_parent->path.elements[el]);
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while (curbegin != NULL && *curbegin) {
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elements = talloc_realloc(mem_ctx, elements, const char *, el+2);
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elements[el] = talloc_strdup(elements, curbegin);
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error = hive_get_key_by_name(mem_ctx, curkey,
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if (!W_ERROR_IS_OK(error)) {
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DEBUG(2, ("Opening key %s failed: %s\n", curbegin,
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curbegin = curend + 1;
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curend = strchr(curbegin, '\\');
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*result = reg_import_hive_key(local_parent->global.context, curkey,
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local_parent->path.predefined_key,
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talloc_steal(curkey, elements));
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WERROR local_get_predefined_key(struct registry_context *ctx,
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uint32_t key_id, struct registry_key **key)
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struct registry_local *rctx = talloc_get_type(ctx,
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struct registry_local);
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struct mountpoint *mp;
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for (mp = rctx->mountpoints; mp != NULL; mp = mp->next) {
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if (mp->path.predefined_key == key_id &&
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mp->path.elements == NULL)
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*key = reg_import_hive_key(ctx, mp->key,
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mp->path.predefined_key,
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static WERROR local_enum_key(TALLOC_CTX *mem_ctx,
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const struct registry_key *key, uint32_t idx,
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const char **keyclass,
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NTTIME *last_changed_time)
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const struct local_key *local = (const struct local_key *)key;
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return hive_enum_key(mem_ctx, local->hive_key, idx, name, keyclass,
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static WERROR local_create_key(TALLOC_CTX *mem_ctx,
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struct registry_key *parent_key,
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const char *key_class,
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struct security_descriptor *security,
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struct registry_key **key)
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struct local_key *local_parent;
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struct hive_key *hivekey;
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const char **elements;
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const char *last_part;
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last_part = strrchr(name, '\\');
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if (last_part == NULL) {
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local_parent = (struct local_key *)parent_key;
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W_ERROR_NOT_OK_RETURN(reg_open_key(mem_ctx, parent_key,
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talloc_strndup(mem_ctx, name, last_part-name),
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(struct registry_key **)&local_parent));
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W_ERROR_NOT_OK_RETURN(hive_key_add_name(mem_ctx, local_parent->hive_key,
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last_part, key_class, security,
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if (local_parent->path.elements != NULL) {
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elements = talloc_array(hivekey, const char *,
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str_list_length(local_parent->path.elements)+2);
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for (i = 0; local_parent->path.elements[i] != NULL; i++) {
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elements[i] = talloc_reference(elements,
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local_parent->path.elements[i]);
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elements = talloc_array(hivekey, const char *, 2);
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elements[i] = talloc_strdup(elements, name);
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elements[i+1] = NULL;
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*key = reg_import_hive_key(local_parent->global.context, hivekey,
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local_parent->path.predefined_key,
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static WERROR local_set_value(struct registry_key *key, const char *name,
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uint32_t type, const DATA_BLOB data)
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struct local_key *local = (struct local_key *)key;
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return hive_key_set_value(local->hive_key, name, type, data);
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static WERROR local_get_value(TALLOC_CTX *mem_ctx,
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const struct registry_key *key,
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const char *name, uint32_t *type, DATA_BLOB *data)
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const struct local_key *local = (const struct local_key *)key;
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return hive_get_value(mem_ctx, local->hive_key, name, type, data);
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static WERROR local_enum_value(TALLOC_CTX *mem_ctx,
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const struct registry_key *key, uint32_t idx,
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const struct local_key *local = (const struct local_key *)key;
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return hive_get_value_by_index(mem_ctx, local->hive_key, idx,
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static WERROR local_delete_key(struct registry_key *key, const char *name)
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const struct local_key *local = (const struct local_key *)key;
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return hive_key_del(local->hive_key, name);
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static WERROR local_delete_value(struct registry_key *key, const char *name)
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const struct local_key *local = (const struct local_key *)key;
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return hive_key_del_value(local->hive_key, name);
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static WERROR local_flush_key(struct registry_key *key)
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const struct local_key *local = (const struct local_key *)key;
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return hive_key_flush(local->hive_key);
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static WERROR local_get_key_info(TALLOC_CTX *mem_ctx,
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const struct registry_key *key,
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const char **classname,
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uint32_t *num_subkeys,
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uint32_t *num_values,
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NTTIME *last_change_time,
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uint32_t *max_subkeynamelen,
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uint32_t *max_valnamelen,
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uint32_t *max_valbufsize)
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const struct local_key *local = (const struct local_key *)key;
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return hive_key_get_info(mem_ctx, local->hive_key,
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classname, num_subkeys, num_values,
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last_change_time, max_subkeynamelen,
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max_valnamelen, max_valbufsize);
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static WERROR local_get_sec_desc(TALLOC_CTX *mem_ctx,
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const struct registry_key *key,
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struct security_descriptor **security)
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const struct local_key *local = (const struct local_key *)key;
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return hive_get_sec_desc(mem_ctx, local->hive_key, security);
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static WERROR local_set_sec_desc(struct registry_key *key,
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const struct security_descriptor *security)
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const struct local_key *local = (const struct local_key *)key;
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return hive_set_sec_desc(local->hive_key, security);
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const static struct registry_operations local_ops = {
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.open_key = local_open_key,
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.get_predefined_key = local_get_predefined_key,
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.enum_key = local_enum_key,
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.create_key = local_create_key,
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.set_value = local_set_value,
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.get_value = local_get_value,
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.enum_value = local_enum_value,
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.delete_key = local_delete_key,
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.delete_value = local_delete_value,
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.flush_key = local_flush_key,
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.get_key_info = local_get_key_info,
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.get_sec_desc = local_get_sec_desc,
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.set_sec_desc = local_set_sec_desc,
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WERROR reg_open_local(TALLOC_CTX *mem_ctx, struct registry_context **ctx)
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struct registry_local *ret = talloc_zero(mem_ctx,
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struct registry_local);
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W_ERROR_HAVE_NO_MEMORY(ret);
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ret->ops = &local_ops;
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*ctx = (struct registry_context *)ret;
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WERROR reg_mount_hive(struct registry_context *rctx,
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struct hive_key *hive_key,
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const char **elements)
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struct registry_local *reg_local = talloc_get_type(rctx,
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struct registry_local);
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struct mountpoint *mp = talloc(rctx, struct mountpoint);
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mp->path.predefined_key = key_id;
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mp->prev = mp->next = NULL;
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if (elements != NULL && str_list_length(elements) != 0) {
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mp->path.elements = talloc_array(mp, const char *,
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str_list_length(elements));
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for (i = 0; elements[i] != NULL; i++) {
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mp->path.elements[i] = talloc_reference(mp->path.elements,
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mp->path.elements[i] = NULL;
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mp->path.elements = NULL;
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DLIST_ADD(reg_local->mountpoints, mp);