#include "libkernelctl.h"
#include "kernel-ctl.h"
+/*
+ * kernel_add_channel_context
+ *
+ * Add context on a kernel channel.
+ */
+int kernel_add_channel_context(struct ltt_kernel_channel *chan,
+ struct lttng_kernel_context *ctx)
+{
+ int ret;
+
+ DBG("Adding context to channel %s", chan->channel->name);
+ ret = kernctl_add_context(chan->fd, ctx);
+ if (ret < 0) {
+ perror("add context ioctl");
+ goto error;
+ }
+
+ chan->ctx = malloc(sizeof(struct lttng_kernel_context));
+ if (chan->ctx == NULL) {
+ perror("malloc event context");
+ goto error;
+ }
+
+ memcpy(chan->ctx, ctx, sizeof(struct lttng_kernel_context));
+
+ return 0;
+
+error:
+ return ret;
+}
+
+/*
+ * kernel_add_event_context
+ *
+ * Add context on a kernel event.
+ */
+int kernel_add_event_context(struct ltt_kernel_event *event,
+ struct lttng_kernel_context *ctx)
+{
+ int ret;
+
+ DBG("Adding context to event %s", event->event->name);
+ ret = kernctl_add_context(event->fd, ctx);
+ if (ret < 0) {
+ perror("add context ioctl");
+ goto error;
+ }
+
+ event->ctx = malloc(sizeof(struct lttng_kernel_context));
+ if (event->ctx == NULL) {
+ perror("malloc event context");
+ goto error;
+ }
+
+ memcpy(event->ctx, ctx, sizeof(struct lttng_kernel_context));
+
+ return 0;
+
+error:
+ return ret;
+}
+
/*
* kernel_create_session
*
}
event->fd = ret;
- event->enabled = 1;
/* Prevent fd duplication after execlp() */
ret = fcntl(event->fd, F_SETFD, FD_CLOEXEC);
if (ret < 0) {
return -1;
}
+/*
+ * kernel_disable_channel
+ *
+ * Disable a kernel channel.
+ */
+int kernel_disable_channel(struct ltt_kernel_channel *chan)
+{
+ int ret;
+
+ ret = kernctl_disable(chan->fd);
+ if (ret < 0) {
+ perror("disable chan ioctl");
+ ret = errno;
+ goto error;
+ }
+
+ chan->enabled = 0;
+ DBG("Kernel channel %s disabled (fd: %d)", chan->channel->name, chan->fd);
+
+ return 0;
+
+error:
+ return ret;
+}
+
+/*
+ * kernel_enable_channel
+ *
+ * Enable a kernel channel.
+ */
+int kernel_enable_channel(struct ltt_kernel_channel *chan)
+{
+ int ret;
+
+ ret = kernctl_enable(chan->fd);
+ if (ret < 0) {
+ perror("enable chan ioctl");
+ ret = errno;
+ goto error;
+ }
+
+ chan->enabled = 1;
+ DBG("Kernel channel %s enabled (fd: %d)", chan->channel->name, chan->fd);
+
+ return 0;
+
+error:
+ return ret;
+}
+
/*
* kernel_enable_event
*
return 0;
error:
- return -1;
+ return ret;
}
/*
return 0;
error:
- return -1;
+ return ret;
}
/*
perror("fcntl session fd");
}
- ret = asprintf(&lks->pathname, "%s/trace_%d",
- channel->pathname, channel->stream_count);
+ ret = asprintf(&lks->pathname, "%s/%s_%d",
+ channel->pathname, channel->channel->name, channel->stream_count);
if (ret < 0) {
perror("asprintf kernel create stream");
goto error;