*
* LTTng UST filter header.
*
- * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
*/
#include <errno.h>
#include <stdio.h>
+#include <stdbool.h>
#include <helper.h>
#include <lttng/ust-events.h>
#include <lttng/ust-context-provider.h>
#define FILTER_STACK_LEN 10 /* includes 2 dummy */
#define FILTER_STACK_EMPTY 1
+#define FILTER_MAX_DATA_LEN 65536
+
#ifndef min_t
#define min_t(type, a, b) \
((type) (a) < (type) (b) ? (type) (a) : (type) (b))
/* Linked bytecode. Child of struct lttng_bytecode_runtime. */
struct bytecode_runtime {
struct lttng_bytecode_runtime p;
+ size_t data_len;
+ size_t data_alloc_len;
+ char *data;
uint16_t len;
- char data[0];
+ char code[0];
};
enum entry_type {
REG_S64,
REG_DOUBLE,
REG_STRING,
+ REG_STAR_GLOB_STRING,
REG_UNKNOWN,
+ REG_PTR,
+};
+
+enum load_type {
+ LOAD_ROOT_CONTEXT,
+ LOAD_ROOT_APP_CONTEXT,
+ LOAD_ROOT_PAYLOAD,
+ LOAD_OBJECT,
+};
+
+enum object_type {
+ OBJECT_TYPE_S8,
+ OBJECT_TYPE_S16,
+ OBJECT_TYPE_S32,
+ OBJECT_TYPE_S64,
+ OBJECT_TYPE_U8,
+ OBJECT_TYPE_U16,
+ OBJECT_TYPE_U32,
+ OBJECT_TYPE_U64,
+
+ OBJECT_TYPE_DOUBLE,
+ OBJECT_TYPE_STRING,
+ OBJECT_TYPE_STRING_SEQUENCE,
+
+ OBJECT_TYPE_SEQUENCE,
+ OBJECT_TYPE_ARRAY,
+ OBJECT_TYPE_STRUCT,
+ OBJECT_TYPE_VARIANT,
+
+ OBJECT_TYPE_DYNAMIC,
+};
+
+struct filter_get_index_data {
+ uint64_t offset; /* in bytes */
+ size_t ctx_index;
+ size_t array_len;
+ struct {
+ size_t len;
+ enum object_type type;
+ bool rev_bo; /* reverse byte order */
+ } elem;
};
/* Validation stack */
+struct vstack_load {
+ enum load_type type;
+ enum object_type object_type;
+ const struct lttng_event_field *field;
+ bool rev_bo; /* reverse byte order */
+};
+
struct vstack_entry {
enum entry_type type;
+ struct vstack_load load;
};
struct vstack {
}
/* Execution stack */
+enum estack_string_literal_type {
+ ESTACK_STRING_LITERAL_TYPE_NONE,
+ ESTACK_STRING_LITERAL_TYPE_PLAIN,
+ ESTACK_STRING_LITERAL_TYPE_STAR_GLOB,
+};
+
+struct load_ptr {
+ enum load_type type;
+ enum object_type object_type;
+ const void *ptr;
+ bool rev_bo;
+ /* Temporary place-holders for contexts. */
+ union {
+ int64_t s64;
+ uint64_t u64;
+ double d;
+ } u;
+ /*
+ * "field" is only needed when nested under a variant, in which
+ * case we cannot specialize the nested operations.
+ */
+ const struct lttng_event_field *field;
+};
+
struct estack_entry {
enum entry_type type; /* For dynamic typing. */
union {
struct {
const char *str;
size_t seq_len;
- int literal; /* is string literal ? */
+ enum estack_string_literal_type literal_type;
} s;
+ struct load_ptr ptr;
} u;
};
const char *print_op(enum filter_op op);
int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode);
-int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode);
+int lttng_filter_specialize_bytecode(struct lttng_event *event,
+ struct bytecode_runtime *bytecode);
uint64_t lttng_filter_false(void *filter_data,
const char *filter_stack_data);
projects / deliverable / lttng-ust.git / blobdiff