/*
- * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
- * Copyright (C) 2011-2013 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License only.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
-#define _GNU_SOURCE
+#include <stdint.h>
#include <string.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <lttng/ust-config.h>
#include <lttng/ust-ctl.h>
#include <lttng/ust-abi.h>
-#include <lttng/ust-events.h>
-#include <sys/mman.h>
-#include <byteswap.h>
+#include <lttng/ust-endian.h>
#include <usterr-signal-safe.h>
#include <ust-comm.h>
-#include <helper.h>
+#include <ust-helper.h>
+#include "ust-compat.h"
#include "../libringbuffer/backend.h"
#include "../libringbuffer/frontend.h"
+#include "../liblttng-ust/ust-events-internal.h"
#include "../liblttng-ust/wait.h"
#include "../liblttng-ust/lttng-rb-clients.h"
#include "../liblttng-ust/clock.h"
+#include "../liblttng-ust/getenv.h"
+#include "../liblttng-ust/lttng-tracer-core.h"
+#include "../liblttng-ust/lttng-counter-client.h"
+
+#include "../libcounter/shm.h"
+#include "../libcounter/smp.h"
+#include "../libcounter/counter.h"
/*
* Number of milliseconds to retry before failing metadata writes on
* Channel representation within consumer.
*/
struct ustctl_consumer_channel {
- struct lttng_channel *chan; /* lttng channel buffers */
+ struct lttng_ust_channel_buffer *chan; /* lttng channel buffers */
/* initial attributes */
struct ustctl_consumer_channel_attr attr;
* Stream representation within consumer.
*/
struct ustctl_consumer_stream {
- struct lttng_ust_shm_handle *handle; /* shared-memory handle */
struct lttng_ust_lib_ring_buffer *buf;
struct ustctl_consumer_channel *chan;
int shm_fd, wait_fd, wakeup_fd;
uint64_t memory_map_size;
};
-extern void lttng_ring_buffer_client_overwrite_init(void);
-extern void lttng_ring_buffer_client_overwrite_rt_init(void);
-extern void lttng_ring_buffer_client_discard_init(void);
-extern void lttng_ring_buffer_client_discard_rt_init(void);
-extern void lttng_ring_buffer_metadata_client_init(void);
-extern void lttng_ring_buffer_client_overwrite_exit(void);
-extern void lttng_ring_buffer_client_overwrite_rt_exit(void);
-extern void lttng_ring_buffer_client_discard_exit(void);
-extern void lttng_ring_buffer_client_discard_rt_exit(void);
-extern void lttng_ring_buffer_metadata_client_exit(void);
+#define USTCTL_COUNTER_ATTR_DIMENSION_MAX 8
+struct ustctl_counter_attr {
+ enum ustctl_counter_arithmetic arithmetic;
+ enum ustctl_counter_bitness bitness;
+ uint32_t nr_dimensions;
+ int64_t global_sum_step;
+ struct ustctl_counter_dimension dimensions[USTCTL_COUNTER_ATTR_DIMENSION_MAX];
+ bool coalesce_hits;
+};
-volatile enum ust_loglevel ust_loglevel;
+/*
+ * Counter representation within daemon.
+ */
+struct ustctl_daemon_counter {
+ struct lib_counter *counter;
+ const struct lttng_counter_ops *ops;
+ struct ustctl_counter_attr *attr; /* initial attributes */
+};
int ustctl_release_handle(int sock, int handle)
{
return 0;
memset(&lum, 0, sizeof(lum));
lum.handle = handle;
- lum.cmd = LTTNG_UST_RELEASE;
+ lum.cmd = LTTNG_UST_ABI_RELEASE;
return ustcomm_send_app_cmd(sock, &lum, &lur);
}
* If sock is negative, it means we don't have to notify the other side
* (e.g. application has already vanished).
*/
-int ustctl_release_object(int sock, struct lttng_ust_object_data *data)
+int ustctl_release_object(int sock, struct lttng_ust_abi_object_data *data)
{
int ret;
return -EINVAL;
switch (data->type) {
- case LTTNG_UST_OBJECT_TYPE_CHANNEL:
+ case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL:
if (data->u.channel.wakeup_fd >= 0) {
ret = close(data->u.channel.wakeup_fd);
if (ret < 0) {
ret = -errno;
return ret;
}
+ data->u.channel.wakeup_fd = -1;
}
free(data->u.channel.data);
+ data->u.channel.data = NULL;
break;
- case LTTNG_UST_OBJECT_TYPE_STREAM:
+ case LTTNG_UST_ABI_OBJECT_TYPE_STREAM:
if (data->u.stream.shm_fd >= 0) {
ret = close(data->u.stream.shm_fd);
if (ret < 0) {
ret = -errno;
return ret;
}
+ data->u.stream.shm_fd = -1;
}
if (data->u.stream.wakeup_fd >= 0) {
ret = close(data->u.stream.wakeup_fd);
ret = -errno;
return ret;
}
+ data->u.stream.wakeup_fd = -1;
+ }
+ break;
+ case LTTNG_UST_ABI_OBJECT_TYPE_EVENT:
+ case LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT:
+ case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP:
+ case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER:
+ break;
+ case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER:
+ free(data->u.counter.data);
+ data->u.counter.data = NULL;
+ break;
+ case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL:
+ if (data->u.counter_global.shm_fd >= 0) {
+ ret = close(data->u.counter_global.shm_fd);
+ if (ret < 0) {
+ ret = -errno;
+ return ret;
+ }
+ data->u.counter_global.shm_fd = -1;
}
break;
- case LTTNG_UST_OBJECT_TYPE_EVENT:
- case LTTNG_UST_OBJECT_TYPE_CONTEXT:
+ case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU:
+ if (data->u.counter_cpu.shm_fd >= 0) {
+ ret = close(data->u.counter_cpu.shm_fd);
+ if (ret < 0) {
+ ret = -errno;
+ return ret;
+ }
+ data->u.counter_cpu.shm_fd = -1;
+ }
break;
default:
assert(0);
DBG("Sending register done command to %d", sock);
memset(&lum, 0, sizeof(lum));
- lum.handle = LTTNG_UST_ROOT_HANDLE;
- lum.cmd = LTTNG_UST_REGISTER_DONE;
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_REGISTER_DONE;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
/* Create session */
memset(&lum, 0, sizeof(lum));
- lum.handle = LTTNG_UST_ROOT_HANDLE;
- lum.cmd = LTTNG_UST_SESSION;
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_SESSION;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
return session_handle;
}
-int ustctl_create_event(int sock, struct lttng_ust_event *ev,
- struct lttng_ust_object_data *channel_data,
- struct lttng_ust_object_data **_event_data)
+int ustctl_create_event(int sock, struct lttng_ust_abi_event *ev,
+ struct lttng_ust_abi_object_data *channel_data,
+ struct lttng_ust_abi_object_data **_event_data)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
- struct lttng_ust_object_data *event_data;
+ struct lttng_ust_abi_object_data *event_data;
int ret;
if (!channel_data || !_event_data)
event_data = zmalloc(sizeof(*event_data));
if (!event_data)
return -ENOMEM;
- event_data->type = LTTNG_UST_OBJECT_TYPE_EVENT;
+ event_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT;
memset(&lum, 0, sizeof(lum));
lum.handle = channel_data->handle;
- lum.cmd = LTTNG_UST_EVENT;
+ lum.cmd = LTTNG_UST_ABI_EVENT;
strncpy(lum.u.event.name, ev->name,
- LTTNG_UST_SYM_NAME_LEN);
+ LTTNG_UST_ABI_SYM_NAME_LEN);
lum.u.event.instrumentation = ev->instrumentation;
lum.u.event.loglevel_type = ev->loglevel_type;
lum.u.event.loglevel = ev->loglevel;
return 0;
}
-int ustctl_add_context(int sock, struct lttng_ust_context *ctx,
- struct lttng_ust_object_data *obj_data,
- struct lttng_ust_object_data **_context_data)
+int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx,
+ struct lttng_ust_abi_object_data *obj_data,
+ struct lttng_ust_abi_object_data **_context_data)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
- struct lttng_ust_object_data *context_data;
+ struct lttng_ust_abi_object_data *context_data = NULL;
+ char *buf = NULL;
+ size_t len;
int ret;
- if (!obj_data || !_context_data)
- return -EINVAL;
+ if (!obj_data || !_context_data) {
+ ret = -EINVAL;
+ goto end;
+ }
context_data = zmalloc(sizeof(*context_data));
- if (!context_data)
- return -ENOMEM;
- context_data->type = LTTNG_UST_OBJECT_TYPE_CONTEXT;
+ if (!context_data) {
+ ret = -ENOMEM;
+ goto end;
+ }
+ context_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT;
memset(&lum, 0, sizeof(lum));
lum.handle = obj_data->handle;
- lum.cmd = LTTNG_UST_CONTEXT;
- lum.u.context = *ctx;
- ret = ustcomm_send_app_cmd(sock, &lum, &lur);
- if (ret) {
- free(context_data);
- return ret;
+ lum.cmd = LTTNG_UST_ABI_CONTEXT;
+
+ lum.u.context.ctx = ctx->ctx;
+ switch (ctx->ctx) {
+ case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER:
+ lum.u.context.u.perf_counter = ctx->u.perf_counter;
+ break;
+ case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT:
+ {
+ size_t provider_name_len = strlen(
+ ctx->u.app_ctx.provider_name) + 1;
+ size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1;
+
+ lum.u.context.u.app_ctx.provider_name_len = provider_name_len;
+ lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len;
+
+ len = provider_name_len + ctx_name_len;
+ buf = zmalloc(len);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto end;
+ }
+ memcpy(buf, ctx->u.app_ctx.provider_name,
+ provider_name_len);
+ memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name,
+ ctx_name_len);
+ break;
+ }
+ default:
+ break;
+ }
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ goto end;
+ if (buf) {
+ /* send var len ctx_name */
+ ret = ustcomm_send_unix_sock(sock, buf, len);
+ if (ret < 0) {
+ goto end;
+ }
+ if (ret != len) {
+ ret = -EINVAL;
+ goto end;
+ }
+ }
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (ret < 0) {
+ goto end;
}
context_data->handle = -1;
DBG("Context created successfully");
*_context_data = context_data;
+ context_data = NULL;
+end:
+ free(context_data);
+ free(buf);
return ret;
}
-int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode,
- struct lttng_ust_object_data *obj_data)
+int ustctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode,
+ struct lttng_ust_abi_object_data *obj_data)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = obj_data->handle;
- lum.cmd = LTTNG_UST_FILTER;
+ lum.cmd = LTTNG_UST_ABI_FILTER;
lum.u.filter.data_size = bytecode->len;
lum.u.filter.reloc_offset = bytecode->reloc_offset;
lum.u.filter.seqnum = bytecode->seqnum;
return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
}
-int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion,
- struct lttng_ust_object_data *obj_data)
+int ustctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode,
+ struct lttng_ust_abi_object_data *obj_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret;
+
+ if (!obj_data)
+ return -EINVAL;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = obj_data->handle;
+ lum.cmd = LTTNG_UST_ABI_CAPTURE;
+ lum.u.capture.data_size = bytecode->len;
+ lum.u.capture.reloc_offset = bytecode->reloc_offset;
+ lum.u.capture.seqnum = bytecode->seqnum;
+
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ return ret;
+ /* send var len bytecode */
+ ret = ustcomm_send_unix_sock(sock, bytecode->data,
+ bytecode->len);
+ if (ret < 0) {
+ return ret;
+ }
+ if (ret != bytecode->len)
+ return -EINVAL;
+ return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+}
+
+int ustctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion,
+ struct lttng_ust_abi_object_data *obj_data)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = obj_data->handle;
- lum.cmd = LTTNG_UST_EXCLUSION;
+ lum.cmd = LTTNG_UST_ABI_EXCLUSION;
lum.u.exclusion.count = exclusion->count;
ret = ustcomm_send_app_msg(sock, &lum);
/* send var len exclusion names */
ret = ustcomm_send_unix_sock(sock,
exclusion->names,
- exclusion->count * LTTNG_UST_SYM_NAME_LEN);
+ exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN);
if (ret < 0) {
return ret;
}
- if (ret != exclusion->count * LTTNG_UST_SYM_NAME_LEN) {
+ if (ret != exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN) {
return -EINVAL;
}
return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
}
/* Enable event, channel and session ioctl */
-int ustctl_enable(int sock, struct lttng_ust_object_data *object)
+int ustctl_enable(int sock, struct lttng_ust_abi_object_data *object)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = object->handle;
- lum.cmd = LTTNG_UST_ENABLE;
+ lum.cmd = LTTNG_UST_ABI_ENABLE;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
}
/* Disable event, channel and session ioctl */
-int ustctl_disable(int sock, struct lttng_ust_object_data *object)
+int ustctl_disable(int sock, struct lttng_ust_abi_object_data *object)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = object->handle;
- lum.cmd = LTTNG_UST_DISABLE;
+ lum.cmd = LTTNG_UST_ABI_DISABLE;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
int ustctl_start_session(int sock, int handle)
{
- struct lttng_ust_object_data obj;
+ struct lttng_ust_abi_object_data obj;
obj.handle = handle;
return ustctl_enable(sock, &obj);
int ustctl_stop_session(int sock, int handle)
{
- struct lttng_ust_object_data obj;
+ struct lttng_ust_abi_object_data obj;
obj.handle = handle;
return ustctl_disable(sock, &obj);
}
+int ustctl_create_event_notifier_group(int sock, int pipe_fd,
+ struct lttng_ust_abi_object_data **_event_notifier_group_data)
+{
+ struct lttng_ust_abi_object_data *event_notifier_group_data;
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ ssize_t len;
+ int ret;
+
+ if (!_event_notifier_group_data)
+ return -EINVAL;
+
+ event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data));
+ if (!event_notifier_group_data)
+ return -ENOMEM;
+
+ event_notifier_group_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_GROUP_CREATE;
+
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ goto error;
+
+ /* Send event_notifier notification pipe. */
+ len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1);
+ if (len <= 0) {
+ ret = len;
+ goto error;
+ }
+
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (ret)
+ goto error;
+
+ event_notifier_group_data->handle = lur.ret_val;
+ DBG("received event_notifier group handle %d", event_notifier_group_data->handle);
+
+ *_event_notifier_group_data = event_notifier_group_data;
+
+ ret = 0;
+ goto end;
+error:
+ free(event_notifier_group_data);
+
+end:
+ return ret;
+}
+
+int ustctl_create_event_notifier(int sock, struct lttng_ust_abi_event_notifier *event_notifier,
+ struct lttng_ust_abi_object_data *event_notifier_group,
+ struct lttng_ust_abi_object_data **_event_notifier_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ struct lttng_ust_abi_object_data *event_notifier_data;
+ ssize_t len;
+ int ret;
+
+ if (!event_notifier_group || !_event_notifier_data)
+ return -EINVAL;
+
+ event_notifier_data = zmalloc(sizeof(*event_notifier_data));
+ if (!event_notifier_data)
+ return -ENOMEM;
+
+ event_notifier_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = event_notifier_group->handle;
+ lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_CREATE;
+ lum.u.event_notifier.len = sizeof(*event_notifier);
+
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret) {
+ free(event_notifier_data);
+ return ret;
+ }
+ /* Send struct lttng_ust_abi_event_notifier */
+ len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier));
+ if (len != sizeof(*event_notifier)) {
+ free(event_notifier_data);
+ if (len < 0)
+ return len;
+ else
+ return -EIO;
+ }
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (ret) {
+ free(event_notifier_data);
+ return ret;
+ }
+ event_notifier_data->handle = lur.ret_val;
+ DBG("received event_notifier handle %u", event_notifier_data->handle);
+ *_event_notifier_data = event_notifier_data;
+
+ return ret;
+}
+
int ustctl_tracepoint_list(int sock)
{
struct ustcomm_ust_msg lum;
int ret, tp_list_handle;
memset(&lum, 0, sizeof(lum));
- lum.handle = LTTNG_UST_ROOT_HANDLE;
- lum.cmd = LTTNG_UST_TRACEPOINT_LIST;
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
}
int ustctl_tracepoint_list_get(int sock, int tp_list_handle,
- struct lttng_ust_tracepoint_iter *iter)
+ struct lttng_ust_abi_tracepoint_iter *iter)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = tp_list_handle;
- lum.cmd = LTTNG_UST_TRACEPOINT_LIST_GET;
+ lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST_GET;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
int ret, tp_field_list_handle;
memset(&lum, 0, sizeof(lum));
- lum.handle = LTTNG_UST_ROOT_HANDLE;
- lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST;
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
}
int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle,
- struct lttng_ust_field_iter *iter)
+ struct lttng_ust_abi_field_iter *iter)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = tp_field_list_handle;
- lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST_GET;
+ lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST_GET;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
return 0;
}
-int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v)
+int ustctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
return -EINVAL;
memset(&lum, 0, sizeof(lum));
- lum.handle = LTTNG_UST_ROOT_HANDLE;
- lum.cmd = LTTNG_UST_TRACER_VERSION;
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_TRACER_VERSION;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
int ret;
memset(&lum, 0, sizeof(lum));
- lum.handle = LTTNG_UST_ROOT_HANDLE;
- lum.cmd = LTTNG_UST_WAIT_QUIESCENT;
+ lum.handle = LTTNG_UST_ABI_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_ABI_WAIT_QUIESCENT;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
return 0;
}
-int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate)
+int ustctl_calibrate(int sock __attribute__((unused)),
+ struct lttng_ust_abi_calibrate *calibrate)
{
if (!calibrate)
return -EINVAL;
return -ENOSYS;
}
-int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object)
+int ustctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = object->handle;
- lum.cmd = LTTNG_UST_FLUSH_BUFFER;
+ lum.cmd = LTTNG_UST_ABI_FLUSH_BUFFER;
ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
static
int ustctl_send_channel(int sock,
- enum lttng_ust_chan_type type,
+ enum lttng_ust_abi_chan_type type,
void *data,
uint64_t size,
int wakeup_fd,
}
int ustctl_recv_channel_from_consumer(int sock,
- struct lttng_ust_object_data **_channel_data)
+ struct lttng_ust_abi_object_data **_channel_data)
{
- struct lttng_ust_object_data *channel_data;
+ struct lttng_ust_abi_object_data *channel_data;
ssize_t len;
int wakeup_fd;
int ret;
ret = -ENOMEM;
goto error_alloc;
}
- channel_data->type = LTTNG_UST_OBJECT_TYPE_CHANNEL;
+ channel_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL;
channel_data->handle = -1;
/* recv mmap size */
}
int ustctl_recv_stream_from_consumer(int sock,
- struct lttng_ust_object_data **_stream_data)
+ struct lttng_ust_abi_object_data **_stream_data)
{
- struct lttng_ust_object_data *stream_data;
+ struct lttng_ust_abi_object_data *stream_data;
ssize_t len;
int ret;
int fds[2];
goto error_alloc;
}
- stream_data->type = LTTNG_UST_OBJECT_TYPE_STREAM;
+ stream_data->type = LTTNG_UST_ABI_OBJECT_TYPE_STREAM;
stream_data->handle = -1;
/* recv mmap size */
}
int ustctl_send_channel_to_ust(int sock, int session_handle,
- struct lttng_ust_object_data *channel_data)
+ struct lttng_ust_abi_object_data *channel_data)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = session_handle;
- lum.cmd = LTTNG_UST_CHANNEL;
+ lum.cmd = LTTNG_UST_ABI_CHANNEL;
lum.u.channel.len = channel_data->size;
lum.u.channel.type = channel_data->u.channel.type;
ret = ustcomm_send_app_msg(sock, &lum);
}
int ustctl_send_stream_to_ust(int sock,
- struct lttng_ust_object_data *channel_data,
- struct lttng_ust_object_data *stream_data)
+ struct lttng_ust_abi_object_data *channel_data,
+ struct lttng_ust_abi_object_data *stream_data)
{
struct ustcomm_ust_msg lum;
struct ustcomm_ust_reply lur;
memset(&lum, 0, sizeof(lum));
lum.handle = channel_data->handle;
- lum.cmd = LTTNG_UST_STREAM;
+ lum.cmd = LTTNG_UST_ABI_STREAM;
lum.u.stream.len = stream_data->size;
lum.u.stream.stream_nr = stream_data->u.stream.stream_nr;
ret = ustcomm_send_app_msg(sock, &lum);
return ret;
assert(stream_data);
- assert(stream_data->type == LTTNG_UST_OBJECT_TYPE_STREAM);
+ assert(stream_data->type == LTTNG_UST_ABI_OBJECT_TYPE_STREAM);
ret = ustctl_send_stream(sock,
stream_data->u.stream.stream_nr,
return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
}
-int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest,
- struct lttng_ust_object_data *src)
+int ustctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest,
+ struct lttng_ust_abi_object_data *src)
{
- struct lttng_ust_object_data *obj;
+ struct lttng_ust_abi_object_data *obj;
int ret;
if (src->handle != -1) {
obj->size = src->size;
switch (obj->type) {
- case LTTNG_UST_OBJECT_TYPE_CHANNEL:
+ case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL:
{
obj->u.channel.type = src->u.channel.type;
if (src->u.channel.wakeup_fd >= 0) {
}
- case LTTNG_UST_OBJECT_TYPE_STREAM:
+ case LTTNG_UST_ABI_OBJECT_TYPE_STREAM:
{
obj->u.stream.stream_nr = src->u.stream.stream_nr;
if (src->u.stream.wakeup_fd >= 0) {
goto error_type;
}
+ case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER:
+ {
+ obj->u.counter.data = zmalloc(obj->size);
+ if (!obj->u.counter.data) {
+ ret = -ENOMEM;
+ goto error_type;
+ }
+ memcpy(obj->u.counter.data, src->u.counter.data, obj->size);
+ break;
+ }
+
+ case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL:
+ {
+ if (src->u.counter_global.shm_fd >= 0) {
+ obj->u.counter_global.shm_fd =
+ dup(src->u.counter_global.shm_fd);
+ if (obj->u.counter_global.shm_fd < 0) {
+ ret = errno;
+ goto error_type;
+ }
+ }
+ break;
+ }
+
+ case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU:
+ {
+ obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr;
+ if (src->u.counter_cpu.shm_fd >= 0) {
+ obj->u.counter_cpu.shm_fd =
+ dup(src->u.counter_cpu.shm_fd);
+ if (obj->u.counter_cpu.shm_fd < 0) {
+ ret = errno;
+ goto error_type;
+ }
+ }
+ break;
+ }
+
default:
ret = -EINVAL;
goto error_type;
struct lttng_transport *transport;
switch (attr->type) {
- case LTTNG_UST_CHAN_PER_CPU:
- if (attr->output == LTTNG_UST_MMAP) {
+ case LTTNG_UST_ABI_CHAN_PER_CPU:
+ if (attr->output == LTTNG_UST_ABI_MMAP) {
if (attr->overwrite) {
if (attr->read_timer_interval == 0) {
transport_name = "relay-overwrite-mmap";
return NULL;
}
break;
- case LTTNG_UST_CHAN_METADATA:
- if (attr->output == LTTNG_UST_MMAP)
+ case LTTNG_UST_ABI_CHAN_METADATA:
+ if (attr->output == LTTNG_UST_ABI_MMAP)
transport_name = "relay-metadata-mmap";
else
return NULL;
return NULL;
}
- transport = lttng_transport_find(transport_name);
+ transport = lttng_ust_transport_find(transport_name);
if (!transport) {
DBG("LTTng transport %s not found\n",
transport_name);
if (!chan)
return NULL;
- chan->chan = transport->ops.channel_create(transport_name, NULL,
+ chan->chan = transport->ops.priv->channel_create(transport_name, NULL,
attr->subbuf_size, attr->num_subbuf,
attr->switch_timer_interval,
attr->read_timer_interval,
attr->uuid, attr->chan_id,
- stream_fds, nr_stream_fds);
+ stream_fds, nr_stream_fds,
+ attr->blocking_timeout);
if (!chan->chan) {
goto chan_error;
}
{
(void) ustctl_channel_close_wait_fd(chan);
(void) ustctl_channel_close_wakeup_fd(chan);
- chan->chan->ops->channel_destroy(chan->chan);
+ chan->chan->ops->priv->channel_destroy(chan->chan);
free(chan);
}
{
struct shm_object_table *table;
- table = channel->chan->handle->table;
+ table = channel->chan->priv->rb_chan->handle->table;
if (table->size <= 0)
return -EINVAL;
return ustctl_send_channel(sock,
size_t len) /* metadata length */
{
struct lttng_ust_lib_ring_buffer_ctx ctx;
- struct lttng_channel *chan = channel->chan;
+ struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan;
const char *str = metadata_str;
int ret = 0, waitret;
size_t reserve_len, pos;
for (pos = 0; pos < len; pos += reserve_len) {
reserve_len = min_t(size_t,
- chan->ops->packet_avail_size(chan->chan, chan->handle),
+ lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf),
len - pos);
- lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len,
- sizeof(char), -1, chan->handle);
+ lttng_ust_lib_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL);
/*
* We don't care about metadata buffer's records lost
* count, because we always retry here. Report error if
*/
waitret = wait_cond_interruptible_timeout(
({
- ret = chan->ops->event_reserve(&ctx, 0);
+ ret = lttng_chan_buf->ops->event_reserve(&ctx);
ret != -ENOBUFS || !ret;
}),
LTTNG_METADATA_TIMEOUT_MSEC);
ret = waitret;
goto end;
}
- chan->ops->event_write(&ctx, &str[pos], reserve_len);
- chan->ops->event_commit(&ctx);
+ lttng_chan_buf->ops->event_write(&ctx, &str[pos], reserve_len, 1);
+ lttng_chan_buf->ops->event_commit(&ctx);
}
end:
return ret;
size_t len) /* metadata length */
{
struct lttng_ust_lib_ring_buffer_ctx ctx;
- struct lttng_channel *chan = channel->chan;
+ struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan;
const char *str = metadata_str;
ssize_t reserve_len;
int ret;
reserve_len = min_t(ssize_t,
- chan->ops->packet_avail_size(chan->chan, chan->handle),
+ lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf),
len);
- lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len,
- sizeof(char), -1, chan->handle);
- ret = chan->ops->event_reserve(&ctx, 0);
+ lttng_ust_lib_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL);
+ ret = lttng_chan_buf->ops->event_reserve(&ctx);
if (ret != 0) {
DBG("LTTng: event reservation failed");
assert(ret < 0);
reserve_len = ret;
goto end;
}
- chan->ops->event_write(&ctx, str, reserve_len);
- chan->ops->event_commit(&ctx);
+ lttng_chan_buf->ops->event_write(&ctx, str, reserve_len, 1);
+ lttng_chan_buf->ops->event_commit(&ctx);
end:
return reserve_len;
int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan)
{
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
int ret;
- chan = consumer_chan->chan->chan;
+ chan = consumer_chan->chan->priv->rb_chan;
ret = ring_buffer_channel_close_wait_fd(&chan->backend.config,
chan, chan->handle);
if (!ret)
int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan)
{
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
int ret;
- chan = consumer_chan->chan->chan;
+ chan = consumer_chan->chan->priv->rb_chan;
ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config,
chan, chan->handle);
if (!ret)
int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream)
{
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
- chan = stream->chan->chan->chan;
+ chan = stream->chan->chan->priv->rb_chan;
return ring_buffer_stream_close_wait_fd(&chan->backend.config,
- chan, stream->handle, stream->cpu);
+ chan, chan->handle, stream->cpu);
}
int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream)
{
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
- chan = stream->chan->chan->chan;
+ chan = stream->chan->chan->priv->rb_chan;
return ring_buffer_stream_close_wakeup_fd(&chan->backend.config,
- chan, stream->handle, stream->cpu);
+ chan, chan->handle, stream->cpu);
}
struct ustctl_consumer_stream *
{
struct ustctl_consumer_stream *stream;
struct lttng_ust_shm_handle *handle;
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan;
int shm_fd, wait_fd, wakeup_fd;
uint64_t memory_map_size;
struct lttng_ust_lib_ring_buffer *buf;
if (!channel)
return NULL;
- handle = channel->chan->handle;
+ rb_chan = channel->chan->priv->rb_chan;
+ handle = rb_chan->handle;
if (!handle)
return NULL;
- chan = channel->chan->chan;
- buf = channel_get_ring_buffer(&chan->backend.config,
- chan, cpu, handle, &shm_fd, &wait_fd,
+ buf = channel_get_ring_buffer(&rb_chan->backend.config,
+ rb_chan, cpu, handle, &shm_fd, &wait_fd,
&wakeup_fd, &memory_map_size);
if (!buf)
return NULL;
stream = zmalloc(sizeof(*stream));
if (!stream)
goto alloc_error;
- stream->handle = handle;
stream->buf = buf;
stream->chan = channel;
stream->shm_fd = shm_fd;
consumer_chan = stream->chan;
(void) ustctl_stream_close_wait_fd(stream);
(void) ustctl_stream_close_wakeup_fd(stream);
- lib_ring_buffer_release_read(buf, consumer_chan->chan->handle);
+ lib_ring_buffer_release_read(buf, consumer_chan->chan->priv->rb_chan->handle);
free(stream);
}
{
if (!chan)
return -EINVAL;
- return shm_get_wait_fd(chan->chan->handle,
- &chan->chan->handle->chan._ref);
+ return shm_get_wait_fd(chan->chan->priv->rb_chan->handle,
+ &chan->chan->priv->rb_chan->handle->chan._ref);
}
int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan)
{
if (!chan)
return -EINVAL;
- return shm_get_wakeup_fd(chan->chan->handle,
- &chan->chan->handle->chan._ref);
+ return shm_get_wakeup_fd(chan->chan->priv->rb_chan->handle,
+ &chan->chan->priv->rb_chan->handle->chan._ref);
}
int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream)
return -EINVAL;
buf = stream->buf;
consumer_chan = stream->chan;
- return shm_get_wait_fd(consumer_chan->chan->handle, &buf->self._ref);
+ return shm_get_wait_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref);
}
int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream)
return -EINVAL;
buf = stream->buf;
consumer_chan = stream->chan;
- return shm_get_wakeup_fd(consumer_chan->chan->handle, &buf->self._ref);
+ return shm_get_wakeup_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref);
}
/* For mmap mode, readable without "get" operation */
return NULL;
buf = stream->buf;
consumer_chan = stream->chan;
- return shmp(consumer_chan->chan->handle, buf->backend.memory_map);
+ return shmp(consumer_chan->chan->priv->rb_chan->handle, buf->backend.memory_map);
}
/* returns the length to mmap. */
{
struct ustctl_consumer_channel *consumer_chan;
unsigned long mmap_buf_len;
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan;
if (!stream)
return -EINVAL;
consumer_chan = stream->chan;
- chan = consumer_chan->chan->chan;
- if (chan->backend.config.output != RING_BUFFER_MMAP)
+ rb_chan = consumer_chan->chan->priv->rb_chan;
+ if (rb_chan->backend.config.output != RING_BUFFER_MMAP)
return -EINVAL;
- mmap_buf_len = chan->backend.buf_size;
- if (chan->backend.extra_reader_sb)
- mmap_buf_len += chan->backend.subbuf_size;
+ mmap_buf_len = rb_chan->backend.buf_size;
+ if (rb_chan->backend.extra_reader_sb)
+ mmap_buf_len += rb_chan->backend.subbuf_size;
if (mmap_buf_len > INT_MAX)
return -EFBIG;
*len = mmap_buf_len;
unsigned long *len)
{
struct ustctl_consumer_channel *consumer_chan;
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan;
if (!stream)
return -EINVAL;
consumer_chan = stream->chan;
- chan = consumer_chan->chan->chan;
- *len = chan->backend.subbuf_size;
+ rb_chan = consumer_chan->chan->priv->rb_chan;
+ *len = rb_chan->backend.subbuf_size;
return 0;
}
int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream,
unsigned long *off)
{
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan;
unsigned long sb_bindex;
struct lttng_ust_lib_ring_buffer *buf;
struct ustctl_consumer_channel *consumer_chan;
+ struct lttng_ust_lib_ring_buffer_backend_pages_shmp *barray_idx;
+ struct lttng_ust_lib_ring_buffer_backend_pages *pages;
if (!stream)
return -EINVAL;
buf = stream->buf;
consumer_chan = stream->chan;
- chan = consumer_chan->chan->chan;
- if (chan->backend.config.output != RING_BUFFER_MMAP)
+ rb_chan = consumer_chan->chan->priv->rb_chan;
+ if (rb_chan->backend.config.output != RING_BUFFER_MMAP)
return -EINVAL;
- sb_bindex = subbuffer_id_get_index(&chan->backend.config,
+ sb_bindex = subbuffer_id_get_index(&rb_chan->backend.config,
buf->backend.buf_rsb.id);
- *off = shmp(consumer_chan->chan->handle,
- shmp_index(consumer_chan->chan->handle, buf->backend.array, sb_bindex)->shmp)->mmap_offset;
+ barray_idx = shmp_index(rb_chan->handle, buf->backend.array,
+ sb_bindex);
+ if (!barray_idx)
+ return -EINVAL;
+ pages = shmp(rb_chan->handle, barray_idx->shmp);
+ if (!pages)
+ return -EINVAL;
+ *off = pages->mmap_offset;
return 0;
}
unsigned long *len)
{
struct ustctl_consumer_channel *consumer_chan;
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan;
struct lttng_ust_lib_ring_buffer *buf;
if (!stream)
buf = stream->buf;
consumer_chan = stream->chan;
- chan = consumer_chan->chan->chan;
- *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf,
- consumer_chan->chan->handle);
+ rb_chan = consumer_chan->chan->priv->rb_chan;
+ *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf,
+ rb_chan->handle);
return 0;
}
unsigned long *len)
{
struct ustctl_consumer_channel *consumer_chan;
- struct channel *chan;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan;
struct lttng_ust_lib_ring_buffer *buf;
if (!stream)
return -EINVAL;
buf = stream->buf;
consumer_chan = stream->chan;
- chan = consumer_chan->chan->chan;
- *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf,
- consumer_chan->chan->handle);
- *len = PAGE_ALIGN(*len);
+ rb_chan = consumer_chan->chan->priv->rb_chan;
+ *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf,
+ rb_chan->handle);
+ *len = LTTNG_UST_PAGE_ALIGN(*len);
return 0;
}
buf = stream->buf;
consumer_chan = stream->chan;
return lib_ring_buffer_get_next_subbuf(buf,
- consumer_chan->chan->handle);
+ consumer_chan->chan->priv->rb_chan->handle);
}
return -EINVAL;
buf = stream->buf;
consumer_chan = stream->chan;
- lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->handle);
+ lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle);
return 0;
}
buf = stream->buf;
consumer_chan = stream->chan;
return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot,
- &buf->prod_snapshot, consumer_chan->chan->handle);
+ &buf->prod_snapshot, consumer_chan->chan->priv->rb_chan->handle);
+}
+
+/*
+ * Get a snapshot of the current ring buffer producer and consumer positions
+ * even if the consumed and produced positions are contained within the same
+ * subbuffer.
+ */
+int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream)
+{
+ struct lttng_ust_lib_ring_buffer *buf;
+ struct ustctl_consumer_channel *consumer_chan;
+
+ if (!stream)
+ return -EINVAL;
+ buf = stream->buf;
+ consumer_chan = stream->chan;
+ return lib_ring_buffer_snapshot_sample_positions(buf,
+ &buf->cons_snapshot, &buf->prod_snapshot,
+ consumer_chan->chan->priv->rb_chan->handle);
}
/* Get the consumer position (iteration start) */
buf = stream->buf;
consumer_chan = stream->chan;
return lib_ring_buffer_get_subbuf(buf, *pos,
- consumer_chan->chan->handle);
+ consumer_chan->chan->priv->rb_chan->handle);
}
/* Release exclusive sub-buffer access */
return -EINVAL;
buf = stream->buf;
consumer_chan = stream->chan;
- lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->handle);
+ lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle);
return 0;
}
consumer_chan = stream->chan;
lib_ring_buffer_switch_slow(buf,
producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH,
- consumer_chan->chan->handle);
+ consumer_chan->chan->priv->rb_chan->handle);
+}
+
+void ustctl_clear_buffer(struct ustctl_consumer_stream *stream)
+{
+ struct lttng_ust_lib_ring_buffer *buf;
+ struct ustctl_consumer_channel *consumer_chan;
+
+ assert(stream);
+ buf = stream->buf;
+ consumer_chan = stream->chan;
+ lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE,
+ consumer_chan->chan->priv->rb_chan->handle);
+ lib_ring_buffer_clear_reader(buf, consumer_chan->chan->priv->rb_chan->handle);
}
static
struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb(
- struct lttng_ust_lib_ring_buffer *buf,
- struct lttng_ust_shm_handle *handle)
+ struct lttng_ust_lib_ring_buffer *buf __attribute__((unused)),
+ struct lttng_ust_lib_ring_buffer_channel *chan)
{
- struct channel *chan;
const struct lttng_ust_lib_ring_buffer_config *config;
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
- chan = shmp(handle, buf->backend.chan);
config = &chan->backend.config;
if (!config->cb_ptr)
return NULL;
uint64_t *timestamp_begin)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !timestamp_begin)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb)
return -ENOSYS;
- return client_cb->timestamp_begin(buf, handle, timestamp_begin);
+ return client_cb->timestamp_begin(buf, chan, timestamp_begin);
}
int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream,
uint64_t *timestamp_end)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !timestamp_end)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb)
return -ENOSYS;
- return client_cb->timestamp_end(buf, handle, timestamp_end);
+ return client_cb->timestamp_end(buf, chan, timestamp_end);
}
int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream,
uint64_t *events_discarded)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !events_discarded)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb)
return -ENOSYS;
- return client_cb->events_discarded(buf, handle, events_discarded);
+ return client_cb->events_discarded(buf, chan, events_discarded);
}
int ustctl_get_content_size(struct ustctl_consumer_stream *stream,
uint64_t *content_size)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !content_size)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb)
return -ENOSYS;
- return client_cb->content_size(buf, handle, content_size);
+ return client_cb->content_size(buf, chan, content_size);
}
int ustctl_get_packet_size(struct ustctl_consumer_stream *stream,
uint64_t *packet_size)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !packet_size)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb)
return -ENOSYS;
- return client_cb->packet_size(buf, handle, packet_size);
+ return client_cb->packet_size(buf, chan, packet_size);
}
int ustctl_get_stream_id(struct ustctl_consumer_stream *stream,
uint64_t *stream_id)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !stream_id)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb)
return -ENOSYS;
- return client_cb->stream_id(buf, handle, stream_id);
+ return client_cb->stream_id(buf, chan, stream_id);
}
int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream,
uint64_t *ts)
{
struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
struct lttng_ust_lib_ring_buffer *buf;
- struct lttng_ust_shm_handle *handle;
if (!stream || !ts)
return -EINVAL;
buf = stream->buf;
- handle = stream->chan->chan->handle;
- client_cb = get_client_cb(buf, handle);
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
if (!client_cb || !client_cb->current_timestamp)
return -ENOSYS;
- return client_cb->current_timestamp(buf, handle, ts);
+ return client_cb->current_timestamp(buf, chan, ts);
+}
+
+int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream,
+ uint64_t *seq)
+{
+ struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
+ struct lttng_ust_lib_ring_buffer *buf;
+
+ if (!stream || !seq)
+ return -EINVAL;
+ buf = stream->buf;
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
+ if (!client_cb || !client_cb->sequence_number)
+ return -ENOSYS;
+ return client_cb->sequence_number(buf, chan, seq);
}
-#if defined(__x86_64__) || defined(__i386__)
+int ustctl_get_instance_id(struct ustctl_consumer_stream *stream,
+ uint64_t *id)
+{
+ struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+ struct lttng_ust_lib_ring_buffer_channel *chan;
+ struct lttng_ust_lib_ring_buffer *buf;
+
+ if (!stream || !id)
+ return -EINVAL;
+ buf = stream->buf;
+ chan = stream->chan->chan->priv->rb_chan;
+ client_cb = get_client_cb(buf, chan);
+ if (!client_cb)
+ return -ENOSYS;
+ return client_cb->instance_id(buf, chan, id);
+}
+
+#ifdef HAVE_LINUX_PERF_EVENT_H
int ustctl_has_perf_counters(void)
{
#endif
+#ifdef __linux__
+/*
+ * Override application pid/uid/gid with unix socket credentials. If
+ * the application announced a pid matching our view, it means it is
+ * within the same pid namespace, so expose the ppid provided by the
+ * application.
+ */
+static
+int get_cred(int sock,
+ const struct ustctl_reg_msg *reg_msg,
+ uint32_t *pid,
+ uint32_t *ppid,
+ uint32_t *uid,
+ uint32_t *gid)
+{
+ struct ucred ucred;
+ socklen_t ucred_len = sizeof(struct ucred);
+ int ret;
+
+ ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len);
+ if (ret) {
+ return -LTTNG_UST_ERR_PEERCRED;
+ }
+ DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], "
+ "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]",
+ ucred.pid, ucred.uid, ucred.gid,
+ reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid);
+ if (!ucred.pid) {
+ ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace.");
+ return -LTTNG_UST_ERR_PEERCRED_PID;
+ }
+ *pid = ucred.pid;
+ *uid = ucred.uid;
+ *gid = ucred.gid;
+ if (ucred.pid == reg_msg->pid) {
+ *ppid = reg_msg->ppid;
+ } else {
+ *ppid = 0;
+ }
+ return 0;
+}
+#elif defined(__FreeBSD__)
+#include <sys/ucred.h>
+#include <sys/un.h>
+
+/*
+ * Override application uid/gid with unix socket credentials. Use the
+ * first group of the cr_groups.
+ * Use the pid and ppid provided by the application on registration.
+ */
+static
+int get_cred(int sock,
+ const struct ustctl_reg_msg *reg_msg,
+ uint32_t *pid,
+ uint32_t *ppid,
+ uint32_t *uid,
+ uint32_t *gid)
+{
+ struct xucred xucred;
+ socklen_t xucred_len = sizeof(struct xucred);
+ int ret;
+
+ ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len);
+ if (ret) {
+ return -LTTNG_UST_ERR_PEERCRED;
+ }
+ if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) {
+ return -LTTNG_UST_ERR_PEERCRED;
+ }
+ DBG("Unix socket peercred [ uid: %u, gid: %u ], "
+ "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]",
+ xucred.cr_uid, xucred.cr_groups[0],
+ reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid);
+ *pid = reg_msg->pid;
+ *ppid = reg_msg->ppid;
+ *uid = xucred.cr_uid;
+ *gid = xucred.cr_groups[0];
+ return 0;
+}
+#else
+#warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform."
+static
+int get_cred(int sock,
+ const struct ustctl_reg_msg *reg_msg,
+ uint32_t *pid,
+ uint32_t *ppid,
+ uint32_t *uid,
+ uint32_t *gid)
+{
+ DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]",
+ reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid);
+ *pid = reg_msg->pid;
+ *ppid = reg_msg->ppid;
+ *uid = reg_msg->uid;
+ *gid = reg_msg->gid;
+ return 0;
+}
+#endif
+
/*
* Returns 0 on success, negative error value on error.
*/
if (len < 0)
return len;
- if (reg_msg.magic == LTTNG_UST_COMM_MAGIC) {
+ if (reg_msg.magic == LTTNG_UST_ABI_COMM_MAGIC) {
*byte_order = BYTE_ORDER == BIG_ENDIAN ?
BIG_ENDIAN : LITTLE_ENDIAN;
- } else if (reg_msg.magic == bswap_32(LTTNG_UST_COMM_MAGIC)) {
+ } else if (reg_msg.magic == bswap_32(LTTNG_UST_ABI_COMM_MAGIC)) {
*byte_order = BYTE_ORDER == BIG_ENDIAN ?
LITTLE_ENDIAN : BIG_ENDIAN;
} else {
}
*major = reg_msg.major;
*minor = reg_msg.minor;
- *pid = reg_msg.pid;
- *ppid = reg_msg.ppid;
- *uid = reg_msg.uid;
- *gid = reg_msg.gid;
*bits_per_long = reg_msg.bits_per_long;
*uint8_t_alignment = reg_msg.uint8_t_alignment;
*uint16_t_alignment = reg_msg.uint16_t_alignment;
*uint64_t_alignment = reg_msg.uint64_t_alignment;
*long_alignment = reg_msg.long_alignment;
memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN);
- if (reg_msg.major != LTTNG_UST_ABI_MAJOR_VERSION) {
+ if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE ||
+ reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) {
return -LTTNG_UST_ERR_UNSUP_MAJOR;
}
-
- return 0;
+ return get_cred(sock, ®_msg, pid, ppid, uid, gid);
}
int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd)
case 1:
*notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL;
break;
+ case 2:
+ *notify_cmd = USTCTL_NOTIFY_CMD_ENUM;
+ break;
default:
return -EINVAL;
}
*session_objd = msg.session_objd;
*channel_objd = msg.channel_objd;
- strncpy(event_name, msg.event_name, LTTNG_UST_SYM_NAME_LEN);
- event_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ strncpy(event_name, msg.event_name, LTTNG_UST_ABI_SYM_NAME_LEN);
+ event_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0';
*loglevel = msg.loglevel;
signature_len = msg.signature_len;
fields_len = msg.fields_len;
return 0;
}
+/*
+ * Returns 0 on success, negative UST or system error value on error.
+ */
+int ustctl_recv_register_enum(int sock,
+ int *session_objd,
+ char *enum_name,
+ struct ustctl_enum_entry **entries,
+ size_t *nr_entries)
+{
+ ssize_t len;
+ struct ustcomm_notify_enum_msg msg;
+ size_t entries_len;
+ struct ustctl_enum_entry *a_entries = NULL;
+
+ len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg));
+ if (len > 0 && len != sizeof(msg))
+ return -EIO;
+ if (len == 0)
+ return -EPIPE;
+ if (len < 0)
+ return len;
+
+ *session_objd = msg.session_objd;
+ strncpy(enum_name, msg.enum_name, LTTNG_UST_ABI_SYM_NAME_LEN);
+ enum_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0';
+ entries_len = msg.entries_len;
+
+ if (entries_len % sizeof(*a_entries) != 0) {
+ return -EINVAL;
+ }
+
+ /* recv entries */
+ if (entries_len) {
+ a_entries = zmalloc(entries_len);
+ if (!a_entries)
+ return -ENOMEM;
+ len = ustcomm_recv_unix_sock(sock, a_entries, entries_len);
+ if (len > 0 && len != entries_len) {
+ len = -EIO;
+ goto entries_error;
+ }
+ if (len == 0) {
+ len = -EPIPE;
+ goto entries_error;
+ }
+ if (len < 0) {
+ goto entries_error;
+ }
+ }
+ *nr_entries = entries_len / sizeof(*a_entries);
+ *entries = a_entries;
+
+ return 0;
+
+entries_error:
+ free(a_entries);
+ return len;
+}
+
+/*
+ * Returns 0 on success, negative error value on error.
+ */
+int ustctl_reply_register_enum(int sock,
+ uint64_t id,
+ int ret_code)
+{
+ ssize_t len;
+ struct {
+ struct ustcomm_notify_hdr header;
+ struct ustcomm_notify_enum_reply r;
+ } reply;
+
+ memset(&reply, 0, sizeof(reply));
+ reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM;
+ reply.r.ret_code = ret_code;
+ reply.r.enum_id = id;
+ len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply));
+ if (len > 0 && len != sizeof(reply))
+ return -EIO;
+ if (len < 0)
+ return len;
+ return 0;
+}
+
/*
* Returns 0 on success, negative UST or system error value on error.
*/
return 0;
}
-static __attribute__((constructor))
+/* Regenerate the statedump. */
+int ustctl_regenerate_statedump(int sock, int handle)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = handle;
+ lum.cmd = LTTNG_UST_ABI_SESSION_STATEDUMP;
+ ret = ustcomm_send_app_cmd(sock, &lum, &lur);
+ if (ret)
+ return ret;
+ DBG("Regenerated statedump for handle %u", handle);
+ return 0;
+}
+
+/* counter operations */
+
+int ustctl_get_nr_cpu_per_counter(void)
+{
+ return lttng_counter_num_possible_cpus();
+}
+
+struct ustctl_daemon_counter *
+ ustctl_create_counter(size_t nr_dimensions,
+ const struct ustctl_counter_dimension *dimensions,
+ int64_t global_sum_step,
+ int global_counter_fd,
+ int nr_counter_cpu_fds,
+ const int *counter_cpu_fds,
+ enum ustctl_counter_bitness bitness,
+ enum ustctl_counter_arithmetic arithmetic,
+ uint32_t alloc_flags,
+ bool coalesce_hits)
+{
+ const char *transport_name;
+ struct ustctl_daemon_counter *counter;
+ struct lttng_counter_transport *transport;
+ struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX];
+ size_t i;
+
+ if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX)
+ return NULL;
+ /* Currently, only per-cpu allocation is supported. */
+ switch (alloc_flags) {
+ case USTCTL_COUNTER_ALLOC_PER_CPU:
+ break;
+
+ case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL:
+ case USTCTL_COUNTER_ALLOC_GLOBAL:
+ default:
+ return NULL;
+ }
+ switch (bitness) {
+ case USTCTL_COUNTER_BITNESS_32:
+ switch (arithmetic) {
+ case USTCTL_COUNTER_ARITHMETIC_MODULAR:
+ transport_name = "counter-per-cpu-32-modular";
+ break;
+ case USTCTL_COUNTER_ARITHMETIC_SATURATION:
+ transport_name = "counter-per-cpu-32-saturation";
+ break;
+ default:
+ return NULL;
+ }
+ break;
+ case USTCTL_COUNTER_BITNESS_64:
+ switch (arithmetic) {
+ case USTCTL_COUNTER_ARITHMETIC_MODULAR:
+ transport_name = "counter-per-cpu-64-modular";
+ break;
+ case USTCTL_COUNTER_ARITHMETIC_SATURATION:
+ transport_name = "counter-per-cpu-64-saturation";
+ break;
+ default:
+ return NULL;
+ }
+ break;
+ default:
+ return NULL;
+ }
+
+ transport = lttng_counter_transport_find(transport_name);
+ if (!transport) {
+ DBG("LTTng transport %s not found\n",
+ transport_name);
+ return NULL;
+ }
+
+ counter = zmalloc(sizeof(*counter));
+ if (!counter)
+ return NULL;
+ counter->attr = zmalloc(sizeof(*counter->attr));
+ if (!counter->attr)
+ goto free_counter;
+ counter->attr->bitness = bitness;
+ counter->attr->arithmetic = arithmetic;
+ counter->attr->nr_dimensions = nr_dimensions;
+ counter->attr->global_sum_step = global_sum_step;
+ counter->attr->coalesce_hits = coalesce_hits;
+ for (i = 0; i < nr_dimensions; i++)
+ counter->attr->dimensions[i] = dimensions[i];
+
+ for (i = 0; i < nr_dimensions; i++) {
+ ust_dim[i].size = dimensions[i].size;
+ ust_dim[i].underflow_index = dimensions[i].underflow_index;
+ ust_dim[i].overflow_index = dimensions[i].overflow_index;
+ ust_dim[i].has_underflow = dimensions[i].has_underflow;
+ ust_dim[i].has_overflow = dimensions[i].has_overflow;
+ }
+ counter->counter = transport->ops.counter_create(nr_dimensions,
+ ust_dim, global_sum_step, global_counter_fd,
+ nr_counter_cpu_fds, counter_cpu_fds, true);
+ if (!counter->counter)
+ goto free_attr;
+ counter->ops = &transport->ops;
+ return counter;
+
+free_attr:
+ free(counter->attr);
+free_counter:
+ free(counter);
+ return NULL;
+}
+
+int ustctl_create_counter_data(struct ustctl_daemon_counter *counter,
+ struct lttng_ust_abi_object_data **_counter_data)
+{
+ struct lttng_ust_abi_object_data *counter_data;
+ struct lttng_ust_abi_counter_conf counter_conf = {0};
+ size_t i;
+ int ret;
+
+ switch (counter->attr->arithmetic) {
+ case USTCTL_COUNTER_ARITHMETIC_MODULAR:
+ counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_MODULAR;
+ break;
+ case USTCTL_COUNTER_ARITHMETIC_SATURATION:
+ counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_SATURATION;
+ break;
+ default:
+ return -EINVAL;
+ }
+ switch (counter->attr->bitness) {
+ case USTCTL_COUNTER_BITNESS_32:
+ counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_32;
+ break;
+ case USTCTL_COUNTER_BITNESS_64:
+ counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_64;
+ break;
+ default:
+ return -EINVAL;
+ }
+ counter_conf.number_dimensions = counter->attr->nr_dimensions;
+ counter_conf.global_sum_step = counter->attr->global_sum_step;
+ counter_conf.coalesce_hits = counter->attr->coalesce_hits;
+ for (i = 0; i < counter->attr->nr_dimensions; i++) {
+ counter_conf.dimensions[i].size = counter->attr->dimensions[i].size;
+ counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index;
+ counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index;
+ counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow;
+ counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow;
+ }
+
+ counter_data = zmalloc(sizeof(*counter_data));
+ if (!counter_data) {
+ ret = -ENOMEM;
+ goto error_alloc;
+ }
+ counter_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER;
+ counter_data->handle = -1;
+
+ counter_data->size = sizeof(counter_conf);
+ counter_data->u.counter.data = zmalloc(sizeof(counter_conf));
+ if (!counter_data->u.counter.data) {
+ ret = -ENOMEM;
+ goto error_alloc_data;
+ }
+
+ memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf));
+ *_counter_data = counter_data;
+
+ return 0;
+
+error_alloc_data:
+ free(counter_data);
+error_alloc:
+ return ret;
+}
+
+int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter,
+ struct lttng_ust_abi_object_data **_counter_global_data)
+{
+ struct lttng_ust_abi_object_data *counter_global_data;
+ int ret, fd;
+ size_t len;
+
+ if (lttng_counter_get_global_shm(counter->counter, &fd, &len))
+ return -EINVAL;
+ counter_global_data = zmalloc(sizeof(*counter_global_data));
+ if (!counter_global_data) {
+ ret = -ENOMEM;
+ goto error_alloc;
+ }
+ counter_global_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL;
+ counter_global_data->handle = -1;
+ counter_global_data->size = len;
+ counter_global_data->u.counter_global.shm_fd = fd;
+ *_counter_global_data = counter_global_data;
+ return 0;
+
+error_alloc:
+ return ret;
+}
+
+int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu,
+ struct lttng_ust_abi_object_data **_counter_cpu_data)
+{
+ struct lttng_ust_abi_object_data *counter_cpu_data;
+ int ret, fd;
+ size_t len;
+
+ if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len))
+ return -EINVAL;
+ counter_cpu_data = zmalloc(sizeof(*counter_cpu_data));
+ if (!counter_cpu_data) {
+ ret = -ENOMEM;
+ goto error_alloc;
+ }
+ counter_cpu_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU;
+ counter_cpu_data->handle = -1;
+ counter_cpu_data->size = len;
+ counter_cpu_data->u.counter_cpu.shm_fd = fd;
+ counter_cpu_data->u.counter_cpu.cpu_nr = cpu;
+ *_counter_cpu_data = counter_cpu_data;
+ return 0;
+
+error_alloc:
+ return ret;
+}
+
+void ustctl_destroy_counter(struct ustctl_daemon_counter *counter)
+{
+ counter->ops->counter_destroy(counter->counter);
+ free(counter->attr);
+ free(counter);
+}
+
+int ustctl_send_counter_data_to_ust(int sock, int parent_handle,
+ struct lttng_ust_abi_object_data *counter_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret;
+ size_t size;
+ ssize_t len;
+
+ if (!counter_data)
+ return -EINVAL;
+
+ size = counter_data->size;
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = parent_handle;
+ lum.cmd = LTTNG_UST_ABI_COUNTER;
+ lum.u.counter.len = size;
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ return ret;
+
+ /* Send counter data */
+ len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size);
+ if (len != size) {
+ if (len < 0)
+ return len;
+ else
+ return -EIO;
+ }
+
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (!ret) {
+ counter_data->handle = lur.ret_val;
+ }
+ return ret;
+}
+
+int ustctl_send_counter_global_data_to_ust(int sock,
+ struct lttng_ust_abi_object_data *counter_data,
+ struct lttng_ust_abi_object_data *counter_global_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret, shm_fd[1];
+ size_t size;
+ ssize_t len;
+
+ if (!counter_data || !counter_global_data)
+ return -EINVAL;
+
+ size = counter_global_data->size;
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = counter_data->handle; /* parent handle */
+ lum.cmd = LTTNG_UST_ABI_COUNTER_GLOBAL;
+ lum.u.counter_global.len = size;
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ return ret;
+
+ shm_fd[0] = counter_global_data->u.counter_global.shm_fd;
+ len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1);
+ if (len <= 0) {
+ if (len < 0)
+ return len;
+ else
+ return -EIO;
+ }
+
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (!ret) {
+ counter_global_data->handle = lur.ret_val;
+ }
+ return ret;
+}
+
+int ustctl_send_counter_cpu_data_to_ust(int sock,
+ struct lttng_ust_abi_object_data *counter_data,
+ struct lttng_ust_abi_object_data *counter_cpu_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret, shm_fd[1];
+ size_t size;
+ ssize_t len;
+
+ if (!counter_data || !counter_cpu_data)
+ return -EINVAL;
+
+ size = counter_cpu_data->size;
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = counter_data->handle; /* parent handle */
+ lum.cmd = LTTNG_UST_ABI_COUNTER_CPU;
+ lum.u.counter_cpu.len = size;
+ lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr;
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ return ret;
+
+ shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd;
+ len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1);
+ if (len <= 0) {
+ if (len < 0)
+ return len;
+ else
+ return -EIO;
+ }
+
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (!ret) {
+ counter_cpu_data->handle = lur.ret_val;
+ }
+ return ret;
+}
+
+int ustctl_counter_read(struct ustctl_daemon_counter *counter,
+ const size_t *dimension_indexes,
+ int cpu, int64_t *value,
+ bool *overflow, bool *underflow)
+{
+ return counter->ops->counter_read(counter->counter, dimension_indexes, cpu,
+ value, overflow, underflow);
+}
+
+int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter,
+ const size_t *dimension_indexes,
+ int64_t *value,
+ bool *overflow, bool *underflow)
+{
+ return counter->ops->counter_aggregate(counter->counter, dimension_indexes,
+ value, overflow, underflow);
+}
+
+int ustctl_counter_clear(struct ustctl_daemon_counter *counter,
+ const size_t *dimension_indexes)
+{
+ return counter->ops->counter_clear(counter->counter, dimension_indexes);
+}
+
+static
+void ustctl_init(void)
+ __attribute__((constructor));
+static
void ustctl_init(void)
{
- init_usterr();
+ ust_err_init();
+ lttng_ust_getenv_init(); /* Needs ust_err_init() to be completed. */
lttng_ust_clock_init();
- lttng_ring_buffer_metadata_client_init();
- lttng_ring_buffer_client_overwrite_init();
- lttng_ring_buffer_client_overwrite_rt_init();
- lttng_ring_buffer_client_discard_init();
- lttng_ring_buffer_client_discard_rt_init();
+ lttng_ust_ring_buffer_clients_init();
+ lttng_ust_counter_clients_init();
lib_ringbuffer_signal_init();
}
-static __attribute__((destructor))
+static
+void ustctl_exit(void)
+ __attribute__((destructor));
+static
void ustctl_exit(void)
{
- lttng_ring_buffer_client_discard_rt_exit();
- lttng_ring_buffer_client_discard_exit();
- lttng_ring_buffer_client_overwrite_rt_exit();
- lttng_ring_buffer_client_overwrite_exit();
- lttng_ring_buffer_metadata_client_exit();
+ lttng_ust_counter_clients_exit();
+ lttng_ust_ring_buffer_clients_exit();
}
projects / lttng-ust.git / blobdiff