bin_PROGRAMS = ltt-sessiond
-ltt_sessiond_SOURCES = utils.c trace.c session.c traceable-app.c ust-ctl.c \
- kernel-ctl.c context.c futex.c futex.h \
- utils.h trace.h session.h traceable-app.h ust-ctl.h \
+ltt_sessiond_SOURCES = utils.c utils.h \
+ trace-kernel.c trace-kernel.h \
+ session.c session.h \
+ traceable-app.c traceable-app.h \
+ ust-ctl.c ust-ctl.h \
+ kernel-ctl.c kernel-ctl.h \
+ context.c context.h \
+ futex.c futex.h \
ust-comm.c ust-comm.h \
- context.h kernel-ctl.h ltt-sessiond.h main.c
+ ltt-sessiond.h main.c
# link on liblttngctl for check if sessiond is already alive.
ltt_sessiond_LDADD = \
DBG("Add kernel context to event %s", event_name);
- kevent = get_kernel_event_by_name(event_name, kchan);
+ kevent = trace_kernel_get_event_by_name(event_name, kchan);
if (kevent != NULL) {
ret = kernel_add_event_context(kevent, kctx);
if (ret < 0) {
}
} else {
/* Get kernel channel */
- kchan = get_kernel_channel_by_name(channel_name, ksession);
+ kchan = trace_kernel_get_channel_by_name(channel_name, ksession);
if (kchan == NULL) {
ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
goto error;
#include <lttng-kernel.h>
-#include "trace.h"
+#include "trace-kernel.h"
int add_kernel_context(struct ltt_kernel_session *ksession,
struct lttng_kernel_context *kctx, char *event_name,
struct ltt_kernel_session *lks;
/* Allocate data structure */
- lks = trace_create_kernel_session();
+ lks = trace_kernel_create_session();
if (lks == NULL) {
ret = -1;
goto error;
struct ltt_kernel_channel *lkc;
/* Allocate kernel channel */
- lkc = trace_create_kernel_channel(chan, path);
+ lkc = trace_kernel_create_channel(chan, path);
if (lkc == NULL) {
goto error;
}
int ret;
struct ltt_kernel_event *event;
- event = trace_create_kernel_event(ev);
+ event = trace_kernel_create_event(ev);
if (event == NULL) {
goto error;
}
struct ltt_kernel_metadata *lkm;
/* Allocate kernel metadata */
- lkm = trace_create_kernel_metadata(path);
+ lkm = trace_kernel_create_metadata(path);
if (lkm == NULL) {
goto error;
}
struct ltt_kernel_stream *lks;
while ((ret = kernctl_create_stream(channel->fd)) > 0) {
- lks = trace_create_kernel_stream();
+ lks = trace_kernel_create_stream();
if (lks == NULL) {
close(ret);
goto error;
#define _LTT_KERNEL_CTL_H
#include "session.h"
-#include "trace.h"
+#include "trace-kernel.h"
/*
* Default size for the event list when kernel_list_events is called. This size
lttcomm_close_unix_sock(session->kernel_session->consumer_fd);
}
- trace_destroy_kernel_session(session->kernel_session);
+ trace_kernel_destroy_session(session->kernel_session);
/* Extra precaution */
session->kernel_session = NULL;
}
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
- kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
+ kchan = trace_kernel_get_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
- kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
+ kchan = trace_kernel_get_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
goto error;
}
- kevent = get_kernel_event_by_name(cmd_ctx->lsm->u.disable.name, kchan);
+ kevent = trace_kernel_get_event_by_name(cmd_ctx->lsm->u.disable.name, kchan);
if (kevent != NULL) {
DBG("Disabling kernel event %s for channel %s.", kevent->event->name,
kchan->channel->name);
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
DBG("Disabling all enabled kernel events");
- kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
+ kchan = trace_kernel_get_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
- kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.enable.channel_name,
+ kchan = trace_kernel_get_channel_by_name(cmd_ctx->lsm->u.enable.channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
/* Channel not found, creating it */
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
- kchan = get_kernel_channel_by_name(channel_name,
+ kchan = trace_kernel_get_channel_by_name(channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
DBG("Channel not found. Creating channel %s", channel_name);
ret = LTTCOMM_KERN_CHAN_FAIL;
goto error;
}
- kchan = get_kernel_channel_by_name(channel_name,
+ kchan = trace_kernel_get_channel_by_name(channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
ERR("Channel %s not found after creation. Internal error, giving up.",
}
}
- kevent = get_kernel_event_by_name(cmd_ctx->lsm->u.enable.event.name, kchan);
+ kevent = trace_kernel_get_event_by_name(cmd_ctx->lsm->u.enable.event.name, kchan);
if (kevent == NULL) {
DBG("Creating kernel event %s for channel %s.",
cmd_ctx->lsm->u.enable.event.name, channel_name);
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
- kchan = get_kernel_channel_by_name(channel_name,
+ kchan = trace_kernel_get_channel_by_name(channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
DBG("Channel not found. Creating channel %s", channel_name);
ret = LTTCOMM_KERN_CHAN_FAIL;
goto error;
}
- kchan = get_kernel_channel_by_name(channel_name,
+ kchan = trace_kernel_get_channel_by_name(channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
ERR("Channel %s not found after creation. Internal error, giving up.",
}
for (i = 0; i < size; i++) {
- kevent = get_kernel_event_by_name(event_list[i].name, kchan);
+ kevent = trace_kernel_get_event_by_name(event_list[i].name, kchan);
if (kevent == NULL) {
/* Default event type for enable all */
event_list[i].type = LTTNG_EVENT_TRACEPOINT;
struct ltt_kernel_channel *kchan = NULL;
if (cmd_ctx->session->kernel_session != NULL) {
- kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.list.channel_name,
+ kchan = trace_kernel_get_channel_by_name(cmd_ctx->lsm->u.list.channel_name,
cmd_ctx->session->kernel_session);
if (kchan == NULL) {
ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
--- /dev/null
+/*
+ * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ *
+ * 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; only version 2
+ * of the License.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <lttngerr.h>
+
+#include "trace-kernel.h"
+
+/*
+ * Find the channel name for the given kernel session.
+ */
+struct ltt_kernel_channel *trace_kernel_get_channel_by_name(
+ char *name, struct ltt_kernel_session *session)
+{
+ struct ltt_kernel_channel *chan;
+
+ if (session == NULL) {
+ ERR("Undefine session");
+ goto error;
+ }
+
+ cds_list_for_each_entry(chan, &session->channel_list.head, list) {
+ if (strcmp(name, chan->channel->name) == 0) {
+ DBG("Found channel by name %s", name);
+ return chan;
+ }
+ }
+
+error:
+ return NULL;
+}
+
+/*
+ * Find the event name for the given channel.
+ */
+struct ltt_kernel_event *trace_kernel_get_event_by_name(
+ char *name, struct ltt_kernel_channel *channel)
+{
+ struct ltt_kernel_event *ev;
+
+ if (channel == NULL) {
+ ERR("Undefine channel");
+ goto error;
+ }
+
+ cds_list_for_each_entry(ev, &channel->events_list.head, list) {
+ if (strcmp(name, ev->event->name) == 0) {
+ DBG("Found event by name %s for channel %s", name,
+ channel->channel->name);
+ return ev;
+ }
+ }
+
+error:
+ return NULL;
+}
+
+/*
+ * Allocate and initialize a kernel session data structure.
+ *
+ * Return pointer to structure or NULL.
+ */
+struct ltt_kernel_session *trace_kernel_create_session(void)
+{
+ struct ltt_kernel_session *lks;
+
+ /* Allocate a new ltt kernel session */
+ lks = malloc(sizeof(struct ltt_kernel_session));
+ if (lks == NULL) {
+ perror("create kernel session malloc");
+ goto error;
+ }
+
+ /* Init data structure */
+ lks->fd = 0;
+ lks->metadata_stream_fd = 0;
+ lks->channel_count = 0;
+ lks->stream_count_global = 0;
+ lks->metadata = NULL;
+ lks->consumer_fd = 0;
+ CDS_INIT_LIST_HEAD(&lks->channel_list.head);
+
+ return lks;
+
+error:
+ return NULL;
+}
+
+/*
+ * Allocate and initialize a kernel channel data structure.
+ *
+ * Return pointer to structure or NULL.
+ */
+struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path)
+{
+ int ret;
+ struct ltt_kernel_channel *lkc;
+
+ lkc = malloc(sizeof(struct ltt_kernel_channel));
+ if (lkc == NULL) {
+ perror("ltt_kernel_channel malloc");
+ goto error;
+ }
+
+ lkc->channel = malloc(sizeof(struct lttng_channel));
+ if (lkc->channel == NULL) {
+ perror("lttng_channel malloc");
+ goto error;
+ }
+ memcpy(lkc->channel, chan, sizeof(struct lttng_channel));
+
+ lkc->fd = 0;
+ lkc->stream_count = 0;
+ lkc->event_count = 0;
+ lkc->enabled = 1;
+ lkc->ctx = NULL;
+ /* Init linked list */
+ CDS_INIT_LIST_HEAD(&lkc->events_list.head);
+ CDS_INIT_LIST_HEAD(&lkc->stream_list.head);
+ /* Set default trace output path */
+ ret = asprintf(&lkc->pathname, "%s", path);
+ if (ret < 0) {
+ perror("asprintf kernel create channel");
+ goto error;
+ }
+
+ return lkc;
+
+error:
+ return NULL;
+}
+
+/*
+ * Allocate and initialize a kernel event. Set name and event type.
+ *
+ * Return pointer to structure or NULL.
+ */
+struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev)
+{
+ struct ltt_kernel_event *lke;
+ struct lttng_kernel_event *attr;
+
+ lke = malloc(sizeof(struct ltt_kernel_event));
+ attr = malloc(sizeof(struct lttng_kernel_event));
+ if (lke == NULL || attr == NULL) {
+ perror("kernel event malloc");
+ goto error;
+ }
+
+ switch (ev->type) {
+ case LTTNG_EVENT_PROBE:
+ attr->instrumentation = LTTNG_KERNEL_KPROBE;
+ attr->u.kprobe.addr = ev->attr.probe.addr;
+ attr->u.kprobe.offset = ev->attr.probe.offset;
+ strncpy(attr->u.kprobe.symbol_name,
+ ev->attr.probe.symbol_name, LTTNG_SYM_NAME_LEN);
+ attr->u.kprobe.symbol_name[LTTNG_SYM_NAME_LEN - 1] = '\0';
+ break;
+ case LTTNG_EVENT_FUNCTION:
+ attr->instrumentation = LTTNG_KERNEL_KRETPROBE;
+ attr->u.kretprobe.addr = ev->attr.probe.addr;
+ attr->u.kretprobe.offset = ev->attr.probe.offset;
+ attr->u.kretprobe.offset = ev->attr.probe.offset;
+ strncpy(attr->u.kretprobe.symbol_name,
+ ev->attr.probe.symbol_name, LTTNG_SYM_NAME_LEN);
+ attr->u.kretprobe.symbol_name[LTTNG_SYM_NAME_LEN - 1] = '\0';
+ break;
+ case LTTNG_EVENT_FUNCTION_ENTRY:
+ attr->instrumentation = LTTNG_KERNEL_FUNCTION;
+ strncpy(attr->u.ftrace.symbol_name,
+ ev->attr.ftrace.symbol_name, LTTNG_SYM_NAME_LEN);
+ attr->u.ftrace.symbol_name[LTTNG_SYM_NAME_LEN - 1] = '\0';
+ break;
+ case LTTNG_EVENT_TRACEPOINT:
+ attr->instrumentation = LTTNG_KERNEL_TRACEPOINT;
+ break;
+ default:
+ ERR("Unknown kernel instrumentation type (%d)", ev->type);
+ goto error;
+ }
+
+ /* Copy event name */
+ strncpy(attr->name, ev->name, LTTNG_SYM_NAME_LEN);
+ attr->name[LTTNG_SYM_NAME_LEN - 1] = '\0';
+
+ /* Setting up a kernel event */
+ lke->fd = 0;
+ lke->event = attr;
+ lke->enabled = 1;
+ lke->ctx = NULL;
+
+ return lke;
+
+error:
+ return NULL;
+}
+
+/*
+ * Allocate and initialize a kernel metadata.
+ *
+ * Return pointer to structure or NULL.
+ */
+struct ltt_kernel_metadata *trace_kernel_create_metadata(char *path)
+{
+ int ret;
+ struct ltt_kernel_metadata *lkm;
+ struct lttng_channel *chan;
+
+ lkm = malloc(sizeof(struct ltt_kernel_metadata));
+ chan = malloc(sizeof(struct lttng_channel));
+ if (lkm == NULL || chan == NULL) {
+ perror("kernel metadata malloc");
+ goto error;
+ }
+
+ /* Set default attributes */
+ chan->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE;
+ chan->attr.subbuf_size = DEFAULT_METADATA_SUBBUF_SIZE;
+ chan->attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM;
+ chan->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER;
+ chan->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER;
+ chan->attr.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
+
+ /* Init metadata */
+ lkm->fd = 0;
+ lkm->conf = chan;
+ /* Set default metadata path */
+ ret = asprintf(&lkm->pathname, "%s/metadata", path);
+ if (ret < 0) {
+ perror("asprintf kernel metadata");
+ goto error;
+ }
+
+ return lkm;
+
+error:
+ return NULL;
+}
+
+/*
+ * Allocate and initialize a kernel stream. The stream is set to ACTIVE_FD by
+ * default.
+ *
+ * Return pointer to structure or NULL.
+ */
+struct ltt_kernel_stream *trace_kernel_create_stream(void)
+{
+ struct ltt_kernel_stream *lks;
+
+ lks = malloc(sizeof(struct ltt_kernel_stream));
+ if (lks == NULL) {
+ perror("kernel stream malloc");
+ goto error;
+ }
+
+ /* Init stream */
+ lks->fd = 0;
+ lks->pathname = NULL;
+ lks->state = 0;
+
+ return lks;
+
+error:
+ return NULL;
+}
+
+/*
+ * Cleanup kernel stream structure.
+ */
+void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream)
+{
+ DBG("[trace] Closing stream fd %d", stream->fd);
+ /* Close kernel fd */
+ close(stream->fd);
+ free(stream->pathname);
+
+ /* Remove from stream list */
+ cds_list_del(&stream->list);
+ free(stream);
+}
+
+/*
+ * Cleanup kernel event structure.
+ */
+void trace_kernel_destroy_event(struct ltt_kernel_event *event)
+{
+ DBG("[trace] Closing event fd %d", event->fd);
+ /* Close kernel fd */
+ close(event->fd);
+ /* Free attributes */
+ free(event->event);
+
+ /* Remove from event list */
+ cds_list_del(&event->list);
+ free(event);
+}
+
+/*
+ * Cleanup kernel channel structure.
+ */
+void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel)
+{
+ struct ltt_kernel_stream *stream, *stmp;
+ struct ltt_kernel_event *event, *etmp;
+
+ DBG("[trace] Closing channel fd %d", channel->fd);
+ /* Close kernel fd */
+ close(channel->fd);
+ free(channel->pathname);
+ /* Free attributes structure */
+ free(channel->channel);
+
+ /* For each stream in the channel list */
+ cds_list_for_each_entry_safe(stream, stmp, &channel->stream_list.head, list) {
+ trace_kernel_destroy_stream(stream);
+ }
+
+ /* For each event in the channel list */
+ cds_list_for_each_entry_safe(event, etmp, &channel->events_list.head, list) {
+ trace_kernel_destroy_event(event);
+ }
+
+ /* Remove from channel list */
+ cds_list_del(&channel->list);
+ free(channel);
+}
+
+/*
+ * Cleanup kernel metadata structure.
+ */
+void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata)
+{
+ DBG("[trace] Closing metadata fd %d", metadata->fd);
+ /* Close kernel fd */
+ close(metadata->fd);
+ /* Free attributes */
+ free(metadata->conf);
+
+ free(metadata);
+}
+
+/*
+ * Cleanup kernel session structure
+ */
+void trace_kernel_destroy_session(struct ltt_kernel_session *session)
+{
+ struct ltt_kernel_channel *channel, *ctmp;
+
+ DBG("[trace] Closing session fd %d", session->fd);
+ /* Close kernel fds */
+ close(session->fd);
+ if (session->metadata_stream_fd != 0) {
+ DBG("[trace] Closing metadata stream fd %d", session->metadata_stream_fd);
+ close(session->metadata_stream_fd);
+ }
+
+ if (session->metadata != NULL) {
+ trace_kernel_destroy_metadata(session->metadata);
+ }
+
+ cds_list_for_each_entry_safe(channel, ctmp, &session->channel_list.head, list) {
+ trace_kernel_destroy_channel(channel);
+ }
+
+ free(session);
+}
--- /dev/null
+/*
+ * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ *
+ * 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; only version 2
+ * of the License.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _LTT_TRACE_KERNEL_H
+#define _LTT_TRACE_KERNEL_H
+
+#include <limits.h>
+#include <urcu/list.h>
+
+#include <lttng/lttng.h>
+#include <lttng-kernel.h>
+
+/* Kernel event list */
+struct ltt_kernel_event_list {
+ struct cds_list_head head;
+};
+
+/* Channel stream list */
+struct ltt_kernel_stream_list {
+ struct cds_list_head head;
+};
+
+/* Channel list */
+struct ltt_kernel_channel_list {
+ struct cds_list_head head;
+};
+
+/* Kernel event */
+struct ltt_kernel_event {
+ int fd;
+ int enabled;
+ struct lttng_kernel_context *ctx;
+ struct lttng_kernel_event *event;
+ struct cds_list_head list;
+};
+
+/* Kernel channel */
+struct ltt_kernel_channel {
+ int fd;
+ int enabled;
+ char *pathname;
+ unsigned int stream_count;
+ unsigned int event_count;
+ struct lttng_kernel_context *ctx;
+ struct lttng_channel *channel;
+ struct ltt_kernel_event_list events_list;
+ struct ltt_kernel_stream_list stream_list;
+ struct cds_list_head list;
+};
+
+/* Metadata */
+struct ltt_kernel_metadata {
+ int fd;
+ char *pathname;
+ struct lttng_channel *conf;
+};
+
+/* Channel stream */
+struct ltt_kernel_stream {
+ int fd;
+ char *pathname;
+ int state;
+ struct cds_list_head list;
+};
+
+/* Kernel session */
+struct ltt_kernel_session {
+ int fd;
+ int metadata_stream_fd;
+ int kconsumer_fds_sent;
+ int consumer_fd;
+ unsigned int channel_count;
+ unsigned int stream_count_global;
+ char *trace_path;
+ struct ltt_kernel_metadata *metadata;
+ struct ltt_kernel_channel_list channel_list;
+};
+
+/*
+ * Lookup functions. NULL is returned if not found.
+ */
+struct ltt_kernel_event *trace_kernel_get_event_by_name(
+ char *name, struct ltt_kernel_channel *channel);
+struct ltt_kernel_channel *trace_kernel_get_channel_by_name(
+ char *name, struct ltt_kernel_session *session);
+
+/*
+ * Create functions malloc() the data structure.
+ */
+struct ltt_kernel_session *trace_kernel_create_session(void);
+struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path);
+struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev);
+struct ltt_kernel_metadata *trace_kernel_create_metadata(char *path);
+struct ltt_kernel_stream *trace_kernel_create_stream(void);
+
+/*
+ * Destroy functions free() the data structure and remove from linked list if
+ * it's applies.
+ */
+void trace_kernel_destroy_session(struct ltt_kernel_session *session);
+void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata);
+void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel);
+void trace_kernel_destroy_event(struct ltt_kernel_event *event);
+void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream);
+
+#endif /* _LTT_TRACE_KERNEL_H */
+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * 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; only version 2
- * of the License.
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <lttngerr.h>
-
-#include "trace.h"
-
-/*
- * Find the channel name for the given kernel session.
- */
-struct ltt_kernel_channel *get_kernel_channel_by_name(
- char *name, struct ltt_kernel_session *session)
-{
- struct ltt_kernel_channel *chan;
-
- if (session == NULL) {
- ERR("Undefine session");
- goto error;
- }
-
- cds_list_for_each_entry(chan, &session->channel_list.head, list) {
- if (strcmp(name, chan->channel->name) == 0) {
- DBG("Found channel by name %s", name);
- return chan;
- }
- }
-
-error:
- return NULL;
-}
-
-/*
- * Find the event name for the given channel.
- */
-struct ltt_kernel_event *get_kernel_event_by_name(
- char *name, struct ltt_kernel_channel *channel)
-{
- struct ltt_kernel_event *ev;
-
- if (channel == NULL) {
- ERR("Undefine channel");
- goto error;
- }
-
- cds_list_for_each_entry(ev, &channel->events_list.head, list) {
- if (strcmp(name, ev->event->name) == 0) {
- DBG("Found event by name %s for channel %s", name,
- channel->channel->name);
- return ev;
- }
- }
-
-error:
- return NULL;
-}
-
-/*
- * Allocate and initialize a kernel session data structure.
- *
- * Return pointer to structure or NULL.
- */
-struct ltt_kernel_session *trace_create_kernel_session(void)
-{
- struct ltt_kernel_session *lks;
-
- /* Allocate a new ltt kernel session */
- lks = malloc(sizeof(struct ltt_kernel_session));
- if (lks == NULL) {
- perror("create kernel session malloc");
- goto error;
- }
-
- /* Init data structure */
- lks->fd = 0;
- lks->metadata_stream_fd = 0;
- lks->channel_count = 0;
- lks->stream_count_global = 0;
- lks->metadata = NULL;
- lks->consumer_fd = 0;
- CDS_INIT_LIST_HEAD(&lks->channel_list.head);
-
- return lks;
-
-error:
- return NULL;
-}
-
-/*
- * Allocate and initialize a kernel channel data structure.
- *
- * Return pointer to structure or NULL.
- */
-struct ltt_kernel_channel *trace_create_kernel_channel(struct lttng_channel *chan, char *path)
-{
- int ret;
- struct ltt_kernel_channel *lkc;
-
- lkc = malloc(sizeof(struct ltt_kernel_channel));
- if (lkc == NULL) {
- perror("ltt_kernel_channel malloc");
- goto error;
- }
-
- lkc->channel = malloc(sizeof(struct lttng_channel));
- if (lkc->channel == NULL) {
- perror("lttng_channel malloc");
- goto error;
- }
- memcpy(lkc->channel, chan, sizeof(struct lttng_channel));
-
- lkc->fd = 0;
- lkc->stream_count = 0;
- lkc->event_count = 0;
- lkc->enabled = 1;
- lkc->ctx = NULL;
- /* Init linked list */
- CDS_INIT_LIST_HEAD(&lkc->events_list.head);
- CDS_INIT_LIST_HEAD(&lkc->stream_list.head);
- /* Set default trace output path */
- ret = asprintf(&lkc->pathname, "%s", path);
- if (ret < 0) {
- perror("asprintf kernel create channel");
- goto error;
- }
-
- return lkc;
-
-error:
- return NULL;
-}
-
-/*
- * Allocate and initialize a kernel event. Set name and event type.
- *
- * Return pointer to structure or NULL.
- */
-struct ltt_kernel_event *trace_create_kernel_event(struct lttng_event *ev)
-{
- struct ltt_kernel_event *lke;
- struct lttng_kernel_event *attr;
-
- lke = malloc(sizeof(struct ltt_kernel_event));
- attr = malloc(sizeof(struct lttng_kernel_event));
- if (lke == NULL || attr == NULL) {
- perror("kernel event malloc");
- goto error;
- }
-
- switch (ev->type) {
- case LTTNG_EVENT_PROBE:
- attr->instrumentation = LTTNG_KERNEL_KPROBE;
- attr->u.kprobe.addr = ev->attr.probe.addr;
- attr->u.kprobe.offset = ev->attr.probe.offset;
- strncpy(attr->u.kprobe.symbol_name,
- ev->attr.probe.symbol_name, LTTNG_SYM_NAME_LEN);
- attr->u.kprobe.symbol_name[LTTNG_SYM_NAME_LEN - 1] = '\0';
- break;
- case LTTNG_EVENT_FUNCTION:
- attr->instrumentation = LTTNG_KERNEL_KRETPROBE;
- attr->u.kretprobe.addr = ev->attr.probe.addr;
- attr->u.kretprobe.offset = ev->attr.probe.offset;
- attr->u.kretprobe.offset = ev->attr.probe.offset;
- strncpy(attr->u.kretprobe.symbol_name,
- ev->attr.probe.symbol_name, LTTNG_SYM_NAME_LEN);
- attr->u.kretprobe.symbol_name[LTTNG_SYM_NAME_LEN - 1] = '\0';
- break;
- case LTTNG_EVENT_FUNCTION_ENTRY:
- attr->instrumentation = LTTNG_KERNEL_FUNCTION;
- strncpy(attr->u.ftrace.symbol_name,
- ev->attr.ftrace.symbol_name, LTTNG_SYM_NAME_LEN);
- attr->u.ftrace.symbol_name[LTTNG_SYM_NAME_LEN - 1] = '\0';
- break;
- case LTTNG_EVENT_TRACEPOINT:
- attr->instrumentation = LTTNG_KERNEL_TRACEPOINT;
- break;
- default:
- ERR("Unknown kernel instrumentation type (%d)", ev->type);
- goto error;
- }
-
- /* Copy event name */
- strncpy(attr->name, ev->name, LTTNG_SYM_NAME_LEN);
- attr->name[LTTNG_SYM_NAME_LEN - 1] = '\0';
-
- /* Setting up a kernel event */
- lke->fd = 0;
- lke->event = attr;
- lke->enabled = 1;
- lke->ctx = NULL;
-
- return lke;
-
-error:
- return NULL;
-}
-
-/*
- * Allocate and initialize a kernel metadata.
- *
- * Return pointer to structure or NULL.
- */
-struct ltt_kernel_metadata *trace_create_kernel_metadata(char *path)
-{
- int ret;
- struct ltt_kernel_metadata *lkm;
- struct lttng_channel *chan;
-
- lkm = malloc(sizeof(struct ltt_kernel_metadata));
- chan = malloc(sizeof(struct lttng_channel));
- if (lkm == NULL || chan == NULL) {
- perror("kernel metadata malloc");
- goto error;
- }
-
- /* Set default attributes */
- chan->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE;
- chan->attr.subbuf_size = DEFAULT_METADATA_SUBBUF_SIZE;
- chan->attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM;
- chan->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER;
- chan->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER;
- chan->attr.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
-
- /* Init metadata */
- lkm->fd = 0;
- lkm->conf = chan;
- /* Set default metadata path */
- ret = asprintf(&lkm->pathname, "%s/metadata", path);
- if (ret < 0) {
- perror("asprintf kernel metadata");
- goto error;
- }
-
- return lkm;
-
-error:
- return NULL;
-}
-
-/*
- * Allocate and initialize a kernel stream. The stream is set to ACTIVE_FD by
- * default.
- *
- * Return pointer to structure or NULL.
- */
-struct ltt_kernel_stream *trace_create_kernel_stream(void)
-{
- struct ltt_kernel_stream *lks;
-
- lks = malloc(sizeof(struct ltt_kernel_stream));
- if (lks == NULL) {
- perror("kernel stream malloc");
- goto error;
- }
-
- /* Init stream */
- lks->fd = 0;
- lks->pathname = NULL;
- lks->state = 0;
-
- return lks;
-
-error:
- return NULL;
-}
-
-/*
- * Cleanup kernel stream structure.
- */
-void trace_destroy_kernel_stream(struct ltt_kernel_stream *stream)
-{
- DBG("[trace] Closing stream fd %d", stream->fd);
- /* Close kernel fd */
- close(stream->fd);
- free(stream->pathname);
-
- /* Remove from stream list */
- cds_list_del(&stream->list);
- free(stream);
-}
-
-/*
- * Cleanup kernel event structure.
- */
-void trace_destroy_kernel_event(struct ltt_kernel_event *event)
-{
- DBG("[trace] Closing event fd %d", event->fd);
- /* Close kernel fd */
- close(event->fd);
- /* Free attributes */
- free(event->event);
-
- /* Remove from event list */
- cds_list_del(&event->list);
- free(event);
-}
-
-/*
- * Cleanup kernel channel structure.
- */
-void trace_destroy_kernel_channel(struct ltt_kernel_channel *channel)
-{
- struct ltt_kernel_stream *stream, *stmp;
- struct ltt_kernel_event *event, *etmp;
-
- DBG("[trace] Closing channel fd %d", channel->fd);
- /* Close kernel fd */
- close(channel->fd);
- free(channel->pathname);
- /* Free attributes structure */
- free(channel->channel);
-
- /* For each stream in the channel list */
- cds_list_for_each_entry_safe(stream, stmp, &channel->stream_list.head, list) {
- trace_destroy_kernel_stream(stream);
- }
-
- /* For each event in the channel list */
- cds_list_for_each_entry_safe(event, etmp, &channel->events_list.head, list) {
- trace_destroy_kernel_event(event);
- }
-
- /* Remove from channel list */
- cds_list_del(&channel->list);
- free(channel);
-}
-
-/*
- * Cleanup kernel metadata structure.
- */
-void trace_destroy_kernel_metadata(struct ltt_kernel_metadata *metadata)
-{
- DBG("[trace] Closing metadata fd %d", metadata->fd);
- /* Close kernel fd */
- close(metadata->fd);
- /* Free attributes */
- free(metadata->conf);
-
- free(metadata);
-}
-
-/*
- * Cleanup kernel session structure
- */
-void trace_destroy_kernel_session(struct ltt_kernel_session *session)
-{
- struct ltt_kernel_channel *channel, *ctmp;
-
- DBG("[trace] Closing session fd %d", session->fd);
- /* Close kernel fds */
- close(session->fd);
- if (session->metadata_stream_fd != 0) {
- DBG("[trace] Closing metadata stream fd %d", session->metadata_stream_fd);
- close(session->metadata_stream_fd);
- }
-
- if (session->metadata != NULL) {
- trace_destroy_kernel_metadata(session->metadata);
- }
-
- cds_list_for_each_entry_safe(channel, ctmp, &session->channel_list.head, list) {
- trace_destroy_kernel_channel(channel);
- }
-
- free(session);
-}
+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * 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; only version 2
- * of the License.
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#ifndef _LTT_TRACE_H
-#define _LTT_TRACE_H
-
-#include <limits.h>
-#include <urcu/list.h>
-
-#include <lttng/lttng.h>
-#include <lttng-kernel.h>
-
-/* Kernel event list */
-struct ltt_kernel_event_list {
- struct cds_list_head head;
-};
-
-/* Channel stream list */
-struct ltt_kernel_stream_list {
- struct cds_list_head head;
-};
-
-/* Channel list */
-struct ltt_kernel_channel_list {
- struct cds_list_head head;
-};
-
-/* Kernel event */
-struct ltt_kernel_event {
- int fd;
- int enabled;
- struct lttng_kernel_context *ctx;
- struct lttng_kernel_event *event;
- struct cds_list_head list;
-};
-
-/* Kernel channel */
-struct ltt_kernel_channel {
- int fd;
- int enabled;
- char *pathname;
- unsigned int stream_count;
- unsigned int event_count;
- struct lttng_kernel_context *ctx;
- struct lttng_channel *channel;
- struct ltt_kernel_event_list events_list;
- struct ltt_kernel_stream_list stream_list;
- struct cds_list_head list;
-};
-
-/* Metadata */
-struct ltt_kernel_metadata {
- int fd;
- char *pathname;
- struct lttng_channel *conf;
-};
-
-/* Channel stream */
-struct ltt_kernel_stream {
- int fd;
- char *pathname;
- int state;
- struct cds_list_head list;
-};
-
-/* Kernel session */
-struct ltt_kernel_session {
- int fd;
- int metadata_stream_fd;
- int kconsumer_fds_sent;
- int consumer_fd;
- unsigned int channel_count;
- unsigned int stream_count_global;
- char *trace_path;
- struct ltt_kernel_metadata *metadata;
- struct ltt_kernel_channel_list channel_list;
-};
-
-/* UST trace representation */
-struct ltt_ust_trace {
- struct cds_list_head list;
- char name[NAME_MAX];
- int shmid;
- pid_t pid;
- struct cds_list_head markers;
-};
-
-struct ltt_ust_marker {
- struct cds_list_head list;
- char *name;
- char *channel;
-};
-
-struct ltt_kernel_event *get_kernel_event_by_name(
- char *name, struct ltt_kernel_channel *channel);
-struct ltt_kernel_channel *get_kernel_channel_by_name(
- char *name, struct ltt_kernel_session *session);
-
-/*
- * Create functions malloc() the data structure.
- */
-struct ltt_kernel_session *trace_create_kernel_session(void);
-struct ltt_kernel_channel *trace_create_kernel_channel(struct lttng_channel *chan, char *path);
-struct ltt_kernel_event *trace_create_kernel_event(struct lttng_event *ev);
-struct ltt_kernel_metadata *trace_create_kernel_metadata(char *path);
-struct ltt_kernel_stream *trace_create_kernel_stream(void);
-
-/*
- * Destroy functions free() the data structure and remove from linked list if
- * it's applies.
- */
-void trace_destroy_kernel_session(struct ltt_kernel_session *session);
-void trace_destroy_kernel_metadata(struct ltt_kernel_metadata *metadata);
-void trace_destroy_kernel_channel(struct ltt_kernel_channel *channel);
-void trace_destroy_kernel_event(struct ltt_kernel_event *event);
-void trace_destroy_kernel_stream(struct ltt_kernel_stream *stream);
-
-#endif /* _LTT_TRACE_H */
#ifndef _LTT_UST_CTL_H
#define _LTT_UST_CTL_H
-#include "session.h"
-#include "trace.h"
-
-/*
-int get_trace_count_per_session(struct ltt_session *session);
-void get_traces_per_session(struct ltt_session *session, struct lttng_trace *traces);
-int ust_create_trace(struct command_ctx *cmd_ctx);
-int ust_start_trace(struct command_ctx *cmd_ctx);
-int ust_stop_trace(struct command_ctx *cmd_ctx);
-*/
-
-#endif /* _LTT_TRACE_H */
+#endif /* _LTT_UST_CTL_H */
projects / lttng-tools.git / commitdiff
