Implement syscall mask ioctl

[lttng-tools.git] / src / common / kernel-ctl / kernel-ctl.c

diff --git a/src/common/kernel-ctl/kernel-ctl.c b/src/common/kernel-ctl/kernel-ctl.c
index e4a268ed48becd506ddbaf955deeacd3ef6d5373..078d8528057efa6afa2d3484a1bb25ec28b9a327 100644 (file)
--- a/src/common/kernel-ctl/kernel-ctl.c
+++ b/src/common/kernel-ctl/kernel-ctl.c
@@ -82,7 +82,13 @@ int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
                old_channel.switch_timer_interval = chops->switch_timer_interval;
                old_channel.read_timer_interval = chops->read_timer_interval;
                old_channel.output = chops->output;
-               memcpy(old_channel.padding, chops->padding, sizeof(old_channel.padding));
+
+               memset(old_channel.padding, 0, sizeof(old_channel.padding));
+               /*
+                * The new channel padding is smaller than the old ABI so we use the
+                * new ABI padding size for the memcpy.
+                */
+               memcpy(old_channel.padding, chops->padding, sizeof(chops->padding));
 
                return ioctl(fd, LTTNG_KERNEL_OLD_METADATA, &old_channel);
        }
@@ -93,7 +99,7 @@ int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
        channel.switch_timer_interval = chops->switch_timer_interval;
        channel.read_timer_interval = chops->read_timer_interval;
        channel.output = chops->output;
-       memcpy(channel.padding, chops->padding, sizeof(channel.padding));
+       memcpy(channel.padding, chops->padding, sizeof(chops->padding));
 
        return ioctl(fd, LTTNG_KERNEL_METADATA, &channel);
 }
@@ -111,7 +117,13 @@ int kernctl_create_channel(int fd, struct lttng_channel_attr *chops)
                old_channel.switch_timer_interval = chops->switch_timer_interval;
                old_channel.read_timer_interval = chops->read_timer_interval;
                old_channel.output = chops->output;
-               memcpy(old_channel.padding, chops->padding, sizeof(old_channel.padding));
+
+               memset(old_channel.padding, 0, sizeof(old_channel.padding));
+               /*
+                * The new channel padding is smaller than the old ABI so we use the
+                * new ABI padding size for the memcpy.
+                */
+               memcpy(old_channel.padding, chops->padding, sizeof(chops->padding));
 
                return ioctl(fd, LTTNG_KERNEL_OLD_CHANNEL, &old_channel);
        }
@@ -122,11 +134,35 @@ int kernctl_create_channel(int fd, struct lttng_channel_attr *chops)
        channel.switch_timer_interval = chops->switch_timer_interval;
        channel.read_timer_interval = chops->read_timer_interval;
        channel.output = chops->output;
-       memcpy(channel.padding, chops->padding, sizeof(channel.padding));
+       memcpy(channel.padding, chops->padding, sizeof(chops->padding));
 
        return ioctl(fd, LTTNG_KERNEL_CHANNEL, &channel);
 }
 
+int kernctl_enable_syscall(int fd, const char *syscall_name)
+{
+       struct lttng_kernel_event event;
+
+       memset(&event, 0, sizeof(event));
+       strncpy(event.name, syscall_name, sizeof(event.name));
+       event.name[sizeof(event.name) - 1] = '\0';
+       event.instrumentation = LTTNG_KERNEL_SYSCALL;
+       event.u.syscall.enable = 1;
+       return ioctl(fd, LTTNG_KERNEL_EVENT, &event);
+}
+
+int kernctl_disable_syscall(int fd, const char *syscall_name)
+{
+       struct lttng_kernel_event event;
+
+       memset(&event, 0, sizeof(event));
+       strncpy(event.name, syscall_name, sizeof(event.name));
+       event.name[sizeof(event.name) - 1] = '\0';
+       event.instrumentation = LTTNG_KERNEL_SYSCALL;
+       event.u.syscall.enable = 0;
+       return ioctl(fd, LTTNG_KERNEL_EVENT, &event);
+}
+
 int kernctl_create_stream(int fd)
 {
        return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_STREAM,
@@ -176,7 +212,7 @@ int kernctl_add_context(int fd, struct lttng_kernel_context *ctx)
 
                old_ctx.ctx = ctx->ctx;
                /* only type that uses the union */
-               if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) {
+               if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) {
                        old_ctx.u.perf_counter.type =
                                ctx->u.perf_counter.type;
                        old_ctx.u.perf_counter.config =
@@ -223,6 +259,11 @@ int kernctl_tracepoint_list(int fd)
                        LTTNG_KERNEL_TRACEPOINT_LIST);
 }
 
+int kernctl_syscall_list(int fd)
+{
+       return ioctl(fd, LTTNG_KERNEL_SYSCALL_LIST);
+}
+
 int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v)
 {
        int ret;
@@ -378,3 +419,45 @@ int kernctl_put_subbuf(int fd)
 {
        return ioctl(fd, RING_BUFFER_PUT_SUBBUF);
 }
+
+/* Returns the timestamp begin of the current sub-buffer. */
+int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN, timestamp_begin);
+}
+
+/* Returns the timestamp end of the current sub-buffer. */
+int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_END, timestamp_end);
+}
+
+/* Returns the number of discarded events in the current sub-buffer. */
+int kernctl_get_events_discarded(int fd, uint64_t *events_discarded)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED, events_discarded);
+}
+
+/* Returns the content size in the current sub-buffer. */
+int kernctl_get_content_size(int fd, uint64_t *content_size)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_CONTENT_SIZE, content_size);
+}
+
+/* Returns the packet size in the current sub-buffer. */
+int kernctl_get_packet_size(int fd, uint64_t *packet_size)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_PACKET_SIZE, packet_size);
+}
+
+/* Returns the stream id of the current sub-buffer. */
+int kernctl_get_stream_id(int fd, uint64_t *stream_id)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_STREAM_ID, stream_id);
+}
+
+/* Returns the current timestamp. */
+int kernctl_get_current_timestamp(int fd, uint64_t *ts)
+{
+       return ioctl(fd, LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP, ts);
+}