/*
- * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
- * Copyright (C) 2018 - Francis Deslauriers <francis.deslauriers@efficios.com>
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2018 Francis Deslauriers <francis.deslauriers@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, version 2.1 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: LGPL-2.1-only
*
- * 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.
- *
- * 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
*/
#ifndef LTTNG_USERSPACE_PROBE_INTERNAL_H
#include <lttng/userspace-probe.h>
#include <common/macros.h>
-#include <common/dynamic-buffer.h>
-#include <common/buffer-view.h>
+#include <common/fd-handle.h>
+#include <stdbool.h>
+
+struct lttng_payload;
+struct lttng_payload_view;
+struct lttng_dynamic_buffer;
+
+typedef bool (*userspace_probe_location_equal_cb)(
+ const struct lttng_userspace_probe_location *a,
+ const struct lttng_userspace_probe_location *b);
+typedef unsigned long (*userspace_probe_location_hash_cb)(
+ const struct lttng_userspace_probe_location *location);
/*
* No elf-specific comm structure is defined since no elf-specific payload is
struct lttng_userspace_probe_location_lookup_method parent;
};
+struct lttng_userspace_probe_location_lookup_method_sdt {
+ struct lttng_userspace_probe_location_lookup_method parent;
+};
+
struct lttng_userspace_probe_location_comm {
/* enum lttng_userspace_probe_location_type */
int8_t type;
char payload[];
} LTTNG_PACKED;
+struct lttng_userspace_probe_location_tracepoint_comm {
+ /* The three lengths include the trailing \0. */
+ uint32_t probe_name_len;
+ uint32_t provider_name_len;
+ uint32_t binary_path_len;
+ /*
+ * Payload is composed of, in that order,
+ * - probe name (with trailing \0),
+ * - provider name (with trailing \0),
+ * - absolute binary path (with trailing \0)
+ */
+ char payload[];
+} LTTNG_PACKED;
+
/* Common ancestor of all userspace probe locations. */
struct lttng_userspace_probe_location {
enum lttng_userspace_probe_location_type type;
struct lttng_userspace_probe_location_lookup_method *lookup_method;
+ userspace_probe_location_equal_cb equal;
+ userspace_probe_location_hash_cb hash;
};
struct lttng_userspace_probe_location_function {
* binary_fd is a file descriptor to the executable file. It's open
* early on to keep the backing inode valid over the course of the
* intrumentation and use. It prevents deletion and reuse races.
- * Set to -1 if not open.
*/
- int binary_fd;
+ struct fd_handle *binary_fd_handle;
+ enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type;
+};
+
+struct lttng_userspace_probe_location_tracepoint {
+ struct lttng_userspace_probe_location parent;
+ char *probe_name;
+ char *provider_name;
+ char *binary_path;
+ /*
+ * binary_fd is a file descriptor to the executable file. It's open
+ * early on to keep the backing inode valid over the course of the
+ * intrumentation and use. It prevents deletion and reuse races.
+ */
+ struct fd_handle *binary_fd_handle;
};
LTTNG_HIDDEN
int lttng_userspace_probe_location_serialize(
const struct lttng_userspace_probe_location *location,
- struct lttng_dynamic_buffer *buffer,
- int *binary_fd);
+ struct lttng_payload *payload);
LTTNG_HIDDEN
-int lttng_userspace_probe_location_create_from_buffer(
- const struct lttng_buffer_view *buffer,
+int lttng_userspace_probe_location_create_from_payload(
+ struct lttng_payload_view *view,
struct lttng_userspace_probe_location **probe_location);
-LTTNG_HIDDEN
-int lttng_userspace_probe_location_function_set_binary_fd(
- struct lttng_userspace_probe_location *location, int binary_fd);
-
/*
* Returns a version of the location that is serialized to a contiguous region
* of memory. Pass NULL to buffer to only get the storage requirement of the
struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy(
const struct lttng_userspace_probe_location *location);
+LTTNG_HIDDEN
+bool lttng_userspace_probe_location_lookup_method_is_equal(
+ const struct lttng_userspace_probe_location_lookup_method *a,
+ const struct lttng_userspace_probe_location_lookup_method *b);
+
+LTTNG_HIDDEN
+bool lttng_userspace_probe_location_is_equal(
+ const struct lttng_userspace_probe_location *a,
+ const struct lttng_userspace_probe_location *b);
+
+LTTNG_HIDDEN
+unsigned long lttng_userspace_probe_location_hash(
+ const struct lttng_userspace_probe_location *location);
+
#endif /* LTTNG_USERSPACE_PROBE_INTERNAL_H */