#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
+#include <string.h>
#include "ltt-sessiond.h"
#include "libkernelctl.h"
{
int ret;
struct ltt_kernel_channel *lkc;
- struct lttng_channel *chan;
+ struct lttng_kernel_channel *chan;
lkc = malloc(sizeof(struct ltt_kernel_channel));
- chan = malloc(sizeof(struct lttng_channel));
+ chan = malloc(sizeof(struct lttng_kernel_channel));
if (lkc == NULL || chan == NULL) {
perror("kernel channel malloc");
ret = kernctl_create_channel(cmd_ctx->session->kernel_session->fd, chan);
if (ret < 0) {
+ perror("ioctl create channel");
goto error;
}
error:
return ret;
}
+
+/*
+ * kernel_enable_event
+ *
+ * Enable kernel event.
+ */
+int kernel_enable_event(struct ltt_kernel_channel *channel, char *name)
+{
+ int ret;
+ struct ltt_kernel_event *event;
+ struct lttng_kernel_event *lke;
+
+ event = malloc(sizeof(struct ltt_kernel_event));
+ lke = malloc(sizeof(struct lttng_kernel_event));
+
+ if (event == NULL || lke == NULL) {
+ perror("kernel enable event malloc");
+ ret = -errno;
+ goto error;
+ }
+
+ /* Setting up a kernel event */
+ strncpy(lke->name, name, LTTNG_SYM_NAME_LEN);
+ lke->instrumentation = LTTNG_KERNEL_TRACEPOINTS;
+ event->event = lke;
+
+ ret = kernctl_create_event(channel->fd, lke);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Add event to event list */
+ cds_list_add(&event->list, &channel->events_list.head);
+
+ return 0;
+
+error:
+ return ret;
+}
+
+/*
+ * kernel_open_metadata
+ *
+ * Open metadata stream.
+ */
+int kernel_open_metadata(struct ltt_kernel_session *session)
+{
+ int ret;
+ struct ltt_kernel_metadata *lkm;
+ struct lttng_kernel_channel *conf;
+
+ lkm = malloc(sizeof(struct ltt_kernel_metadata));
+ conf = malloc(sizeof(struct lttng_kernel_channel));
+
+ if (lkm == NULL || conf == NULL) {
+ perror("kernel open metadata malloc");
+ ret = -errno;
+ goto error;
+ }
+
+ conf->overwrite = DEFAULT_KERNEL_OVERWRITE;
+ conf->subbuf_size = DEFAULT_KERNEL_SUBBUF_SIZE;
+ conf->num_subbuf = DEFAULT_KERNEL_SUBBUF_NUM;
+ conf->switch_timer_interval = DEFAULT_KERNEL_SWITCH_TIMER;
+ conf->read_timer_interval = DEFAULT_KERNEL_READ_TIMER;
+
+ ret = kernctl_open_metadata(session->fd, conf);
+ if (ret < 0) {
+ goto error;
+ }
+
+ session->metadata = lkm;
+ session->metadata->fd = ret;
+ session->metadata->conf = conf;
+
+ return 0;
+
+error:
+ return ret;
+}