Initial import of kconsumerd and libkernelctl

[lttng-tools.git] / libkernelctl / libkernelctl.c

diff --git a/libkernelctl/libkernelctl.c b/libkernelctl/libkernelctl.c
index c29d4ae0e4b71b691234d26432d6ea3db37558d6..e15dd8da624b9489adf256015950a4b66abeeb9d 100644 (file)
--- a/libkernelctl/libkernelctl.c
+++ b/libkernelctl/libkernelctl.c
@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
+ *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -15,3 +16,118 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
+
+#include <sys/ioctl.h>
+
+#include "kernel-ioctl.h"
+#include "libkernelctl.h"
+#include "lttngerr.h"
+
+int kernctl_create_channel(int fd, struct lttng_channel *chops)
+{
+       return ioctl(fd, KERNEL_CREATE_CHANNEL, chops);
+}
+
+int kernctl_create_event(int fd, struct lttng_event *ev)
+{
+       return ioctl(fd, KERNEL_CREATE_EVENT, ev);
+}
+
+int kernctl_create_session(int fd)
+{
+       return ioctl(fd, KERNEL_CREATE_SESSION);
+}
+
+int kernctl_create_stream(int fd)
+{
+       return ioctl(fd, KERNEL_CREATE_STREAM);
+}
+
+/* returns the maximum size for sub-buffers. */
+int kernctl_get_max_subbuf_size(int fd, unsigned long *len)
+{
+       return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len);
+}
+
+/* returns the length to mmap. */
+int kernctl_get_mmap_len(int fd, unsigned long *len)
+{
+       return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len);
+}
+
+/* returns the offset of the subbuffer belonging to the mmap reader. */
+int kernctl_get_mmap_read_offset(int fd, unsigned long *off)
+{
+       return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off);
+}
+
+/* Get exclusive read access to the next sub-buffer that can be read. */
+int kernctl_get_next_subbuf(int fd)
+{
+       return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF);
+}
+
+/* returns the size of the current sub-buffer, without padding (for mmap). */
+int kernctl_get_padded_subbuf_size(int fd, unsigned long *len)
+{
+       return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len);
+}
+
+/* Get exclusive read access to the specified sub-buffer position */
+int kernctl_get_subbuf(int fd, unsigned long *len)
+{
+       return ioctl(fd, RING_BUFFER_GET_SUBBUF, len);
+}
+
+/* returns the size of the current sub-buffer, without padding (for mmap). */
+int kernctl_get_subbuf_size(int fd, unsigned long *len)
+{
+       return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len);
+}
+
+/* open the metadata global channel */
+int kernctl_open_metadata(int fd, struct lttng_channel *chops)
+{
+       return ioctl(fd, KERNEL_OPEN_METADATA, chops);
+}
+
+/* Release exclusive sub-buffer access, move consumer forward. */
+int kernctl_put_next_subbuf(int fd)
+{
+       return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF);
+}
+
+/* Release exclusive sub-buffer access */
+int kernctl_put_subbuf(int fd)
+{
+       return ioctl(fd, RING_BUFFER_PUT_SUBBUF);
+}
+
+/* Get a snapshot of the current ring buffer producer and consumer positions */
+int kernctl_snapshot(int fd)
+{
+       return ioctl(fd, RING_BUFFER_SNAPSHOT);
+}
+
+/* Get the consumer position (iteration start) */
+int kernctl_snapshot_get_consumed(int fd, unsigned long *pos)
+{
+       return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos);
+}
+
+/* Get the producer position (iteration end) */
+int kernctl_snapshot_get_produced(int fd, unsigned long *pos)
+{
+       return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos);
+}
+
+int kernctl_start_session(int fd)
+{
+       return ioctl(fd, KERNEL_SESSION_START);
+}
+
+int kernctl_stop_session(int fd)
+{
+       return ioctl(fd, KERNEL_SESSION_STOP);
+}
+