X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt-sessiond%2Fkernel-ctl.c;h=1af82d9de3086ec0343158d5f6f9d9e1ce731c49;hb=223be86b3f1e2750e9d0bf6e022f2696e84c07d7;hp=95463aa50fc96c6d6dfc67b8837fc08daa507dbf;hpb=d65106b1011efccf8fa5f9d7c8f2dfb0de38f5e8;p=lttng-tools.git

diff --git a/ltt-sessiond/kernel-ctl.c b/ltt-sessiond/kernel-ctl.c
index 95463aa50..1af82d9de 100644
--- a/ltt-sessiond/kernel-ctl.c
+++ b/ltt-sessiond/kernel-ctl.c
@@ -3,8 +3,8 @@
  *
  * 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; either version 2
- * of the License, or (at your option) any later version.
+ * 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
@@ -25,7 +25,6 @@
 #include <unistd.h>
 
 #include "lttngerr.h"
-#include "ltt-sessiond.h"
 #include "libkernelctl.h"
 #include "kernel-ctl.h"
 
@@ -125,7 +124,6 @@ int kernel_create_session(struct ltt_session *session, int tracer_fd)
 
 	lks->kconsumer_fds_sent = 0;
 	session->kernel_session = lks;
-	session->kern_session_count++;
 
 	DBG("Kernel session created (fd: %d)", lks->fd);
 
@@ -141,13 +139,13 @@ 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;
 	}
@@ -283,6 +281,9 @@ int kernel_enable_event(struct ltt_kernel_event *event)
 	ret = kernctl_enable(event->fd);
 	if (ret < 0) {
 		perror("enable event ioctl");
+		if (errno == EEXIST) {
+			ret = -EEXIST;
+		}
 		goto error;
 	}
 
@@ -325,13 +326,13 @@ 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;
 	}
@@ -491,8 +492,8 @@ 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;