X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=ltt-sessiond%2Fkernel-ctl.c;h=203c01050e82199f34128d09b9c5dd95ca6fb0a4;hp=d088115f78380cddc15e1f038b1980ffa16ed4b1;hb=1316184615e422526ef4fae68f980443414969c1;hpb=62499ad6813a67ea23ef39bcfbbf21c40136442a

diff --git a/ltt-sessiond/kernel-ctl.c b/ltt-sessiond/kernel-ctl.c
index d088115f7..203c01050 100644
--- a/ltt-sessiond/kernel-ctl.c
+++ b/ltt-sessiond/kernel-ctl.c
@@ -102,7 +102,7 @@ int kernel_create_session(struct ltt_session *session, int tracer_fd)
 	struct ltt_kernel_session *lks;
 
 	/* Allocate data structure */
-	lks = trace_kernel_create_session();
+	lks = trace_kernel_create_session(session->path);
 	if (lks == NULL) {
 		ret = -1;
 		goto error;
@@ -122,7 +122,7 @@ int kernel_create_session(struct ltt_session *session, int tracer_fd)
 		perror("fcntl session fd");
 	}
 
-	lks->kconsumer_fds_sent = 0;
+	lks->consumer_fds_sent = 0;
 	session->kernel_session = lks;
 
 	DBG("Kernel session created (fd: %d)", lks->fd);
@@ -189,15 +189,28 @@ int kernel_create_event(struct lttng_event *ev,
 
 	event = trace_kernel_create_event(ev);
 	if (event == NULL) {
+		ret = -1;
 		goto error;
 	}
 
 	ret = kernctl_create_event(channel->fd, event->event);
 	if (ret < 0) {
-		perror("create event ioctl");
+		if (errno != EEXIST) {
+			PERROR("create event ioctl");
+		}
+		ret = -errno;
 		goto free_event;
 	}
 
+	/*
+	 * LTTNG_KERNEL_SYSCALL event creation will return 0 on success. However
+	 * this FD must not be added to the event list.
+	 */
+	if (ret == 0 && event->event->instrumentation == LTTNG_KERNEL_SYSCALL) {
+		DBG2("Kernel event syscall creation success");
+		goto end;
+	}
+
 	event->fd = ret;
 	/* Prevent fd duplication after execlp() */
 	ret = fcntl(event->fd, F_SETFD, FD_CLOEXEC);
@@ -211,12 +224,13 @@ int kernel_create_event(struct lttng_event *ev,
 
 	DBG("Event %s created (fd: %d)", ev->name, event->fd);
 
+end:
 	return 0;
 
 free_event:
 	free(event);
 error:
-	return -1;
+	return ret;
 }
 
 /*
@@ -250,9 +264,8 @@ 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;
+	if (ret < 0 && errno != EEXIST) {
+		perror("Enable kernel chan");
 		goto error;
 	}
 
@@ -273,11 +286,8 @@ int kernel_enable_event(struct ltt_kernel_event *event)
 	int ret;
 
 	ret = kernctl_enable(event->fd);
-	if (ret < 0) {
-		perror("enable event ioctl");
-		if (errno == EEXIST) {
-			ret = -EEXIST;
-		}
+	if (ret < 0 && errno != EEXIST) {
+		perror("enable kernel event");
 		goto error;
 	}
 
@@ -298,8 +308,8 @@ int kernel_disable_event(struct ltt_kernel_event *event)
 	int ret;
 
 	ret = kernctl_disable(event->fd);
-	if (ret < 0) {
-		perror("disable event ioctl");
+	if (ret < 0 && errno != EEXIST) {
+		perror("disable kernel event");
 		goto error;
 	}