Remove unused header file

[lttng-tools.git] / ltt-sessiond / kernel-ctl.c

diff --git a/ltt-sessiond/kernel-ctl.c b/ltt-sessiond/kernel-ctl.c
index 16b85bdb5bcb5b6793450b0f2794023541fa2466..64a55084132245f8051e81fbd3820758339d111c 100644 (file)
--- a/ltt-sessiond/kernel-ctl.c
+++ b/ltt-sessiond/kernel-ctl.c
@@ -25,10 +25,71 @@
 #include <unistd.h>
 
 #include "lttngerr.h"
-#include "ltt-sessiond.h"
 #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
  *
@@ -79,13 +140,13 @@ error:
  *  Create a kernel channel, register it to the kernel tracer and add it to the
  *  kernel session.
  */
-int kernel_create_channel(struct ltt_kernel_session *session, struct lttng_channel *chan)
+int kernel_create_channel(struct ltt_kernel_session *session, struct lttng_channel *chan, char *path)
 {
        int ret;
        struct ltt_kernel_channel *lkc;
 
        /* Allocate kernel channel */
-       lkc = trace_create_kernel_channel(chan);
+       lkc = trace_create_kernel_channel(chan, path);
        if (lkc == NULL) {
                goto error;
        }
@@ -141,7 +202,6 @@ int kernel_create_event(struct lttng_event *ev, struct ltt_kernel_channel *chann
        }
 
        event->fd = ret;
-       event->enabled = 1;
        /* Prevent fd duplication after execlp() */
        ret = fcntl(event->fd, F_SETFD, FD_CLOEXEC);
        if (ret < 0) {
@@ -160,6 +220,56 @@ error:
        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
  *
@@ -181,7 +291,7 @@ int kernel_enable_event(struct ltt_kernel_event *event)
        return 0;
 
 error:
-       return -1;
+       return ret;
 }
 
 /*
@@ -205,7 +315,7 @@ int kernel_disable_event(struct ltt_kernel_event *event)
        return 0;
 
 error:
-       return -1;
+       return ret;
 }
 
 /*
@@ -214,13 +324,13 @@ error:
  *  Create kernel metadata, open from the kernel tracer and add it to the
  *  kernel session.
  */
-int kernel_open_metadata(struct ltt_kernel_session *session)
+int kernel_open_metadata(struct ltt_kernel_session *session, char *path)
 {
        int ret;
        struct ltt_kernel_metadata *lkm;
 
        /* Allocate kernel metadata */
-       lkm = trace_create_kernel_metadata();
+       lkm = trace_create_kernel_metadata(path);
        if (lkm == NULL) {
                goto error;
        }
@@ -380,8 +490,8 @@ int kernel_open_channel_stream(struct ltt_kernel_channel *channel)
                        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;