+static
+int serialize_ctx_fields(size_t *_nr_write_fields,
+ struct ustctl_field **ustctl_fields,
+ size_t nr_fields,
+ const struct lttng_ctx_field *lttng_fields)
+{
+ struct ustctl_field *fields;
+ int i, ret;
+ size_t nr_write_fields = 0;
+
+ fields = zmalloc(nr_fields * sizeof(*fields));
+ if (!fields)
+ return -ENOMEM;
+
+ for (i = 0; i < nr_fields; i++) {
+ struct ustctl_field *f;
+ const struct lttng_event_field *lf;
+
+ f = &fields[nr_write_fields];
+ lf = <tng_fields[i].event_field;
+
+ /* skip 'nowrite' fields */
+ if (lf->nowrite)
+ continue;
+ strncpy(f->name, lf->name, LTTNG_UST_SYM_NAME_LEN);
+ f->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ ret = serialize_one_type(&f->type, &lf->type);
+ if (ret)
+ goto error_type;
+ nr_write_fields++;
+ }
+
+ *_nr_write_fields = nr_write_fields;
+ *ustctl_fields = fields;
+ return 0;
+
+error_type:
+ free(fields);
+ return ret;
+}
+