X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=libkernelctl%2Fkernelctl.c;fp=libkernelctl%2Fkernelctl.c;h=afb0e012b7f09f9c8c0516a8f1bdfa4a4c89838a;hp=0000000000000000000000000000000000000000;hb=50ecdf72034d220d3b0300d0caa13e6946be555b;hpb=ca3c5ac0cf100d80352a1a81936b5adc47942f35

diff --git a/libkernelctl/kernelctl.c b/libkernelctl/kernelctl.c
new file mode 100644
index 000000000..afb0e012b
--- /dev/null
+++ b/libkernelctl/kernelctl.c
@@ -0,0 +1,189 @@
+/*
+ * 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
+ * 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * 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 "kernelctl.h"
+
+int kernctl_create_session(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_SESSION);
+}
+
+/* open the metadata global channel */
+int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
+{
+	return ioctl(fd, LTTNG_KERNEL_METADATA, chops);
+}
+
+int kernctl_create_channel(int fd, struct lttng_channel_attr *chops)
+{
+	return ioctl(fd, LTTNG_KERNEL_CHANNEL, chops);
+}
+
+int kernctl_create_stream(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_STREAM);
+}
+
+int kernctl_create_event(int fd, struct lttng_kernel_event *ev)
+{
+	return ioctl(fd, LTTNG_KERNEL_EVENT, ev);
+}
+
+int kernctl_add_context(int fd, struct lttng_kernel_context *ctx)
+{
+	return ioctl(fd, LTTNG_KERNEL_CONTEXT, ctx);
+}
+
+
+/* Enable event, channel and session ioctl */
+int kernctl_enable(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_ENABLE);
+}
+
+/* Disable event, channel and session ioctl */
+int kernctl_disable(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_DISABLE);
+}
+
+int kernctl_start_session(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_SESSION_START);
+}
+
+int kernctl_stop_session(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_SESSION_STOP);
+}
+
+
+int kernctl_tracepoint_list(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_TRACEPOINT_LIST);
+}
+
+int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v)
+{
+	return ioctl(fd, LTTNG_KERNEL_TRACER_VERSION, v);
+}
+
+int kernctl_wait_quiescent(int fd)
+{
+	return ioctl(fd, LTTNG_KERNEL_WAIT_QUIESCENT);
+}
+
+int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate)
+{
+	return ioctl(fd, LTTNG_KERNEL_CALIBRATE, calibrate);
+}
+
+
+int kernctl_buffer_flush(int fd)
+{
+	return ioctl(fd, RING_BUFFER_FLUSH);
+}
+
+
+/* Buffer operations */
+
+/* For mmap mode, readable without "get" operation */
+
+/* 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 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);
+}
+
+/*
+ * For mmap mode, operate on the current packet (between get/put or
+ * get_next/put_next).
+ */
+
+/* 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);
+}
+
+/* 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);
+}
+
+/* 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 next sub-buffer that can be read. */
+int kernctl_get_next_subbuf(int fd)
+{
+	return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF);
+}
+
+
+/* Release exclusive sub-buffer access, move consumer forward. */
+int kernctl_put_next_subbuf(int fd)
+{
+	return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF);
+}
+
+/* snapshot */
+
+/* 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);
+}
+
+/* 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);
+}
+
+/* Release exclusive sub-buffer access */
+int kernctl_put_subbuf(int fd)
+{
+	return ioctl(fd, RING_BUFFER_PUT_SUBBUF);
+}