#include <linux/sched.h>
#include <linux/utsname.h>
#include <lttng/events.h>
+#include <lttng/events-internal.h>
#include <ringbuffer/frontend_types.h>
#include <wrapper/vmalloc.h>
#include <lttng/tracer.h>
#define LTTNG_HOSTNAME_CTX_LEN (__NEW_UTS_LEN + 1)
static
-size_t hostname_get_size(size_t offset)
+size_t hostname_get_size(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, size_t offset)
{
size_t size = 0;
}
static
-void hostname_record(struct lttng_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan)
+void hostname_record(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
+ struct lttng_kernel_ring_buffer_ctx *ctx,
+ struct lttng_kernel_channel_buffer *chan)
{
struct nsproxy *nsproxy;
struct uts_namespace *ns;
ns = nsproxy->uts_ns;
hostname = ns->name.nodename;
chan->ops->event_write(ctx, hostname,
- LTTNG_HOSTNAME_CTX_LEN);
+ LTTNG_HOSTNAME_CTX_LEN, 1);
} else {
chan->ops->event_memset(ctx, 0,
LTTNG_HOSTNAME_CTX_LEN);
}
static
-void hostname_get_value(struct lttng_ctx_field *field,
- struct lttng_probe_ctx *lttng_probe_ctx,
- union lttng_ctx_value *value)
+void hostname_get_value(void *priv,
+ struct lttng_kernel_probe_ctx *lttng_probe_ctx,
+ struct lttng_ctx_value *value)
{
struct nsproxy *nsproxy;
struct uts_namespace *ns;
} else {
hostname = "";
}
- value->str = hostname;
+ value->u.str = hostname;
}
-static const struct lttng_type hostname_array_elem_type =
- __type_integer(char, 0, 0, -1, __BYTE_ORDER, 10, UTF8);
+static const struct lttng_kernel_ctx_field *ctx_field = lttng_kernel_static_ctx_field(
+ lttng_kernel_static_event_field("hostname",
+ lttng_kernel_static_type_array_text(LTTNG_HOSTNAME_CTX_LEN),
+ false, false, false),
+ hostname_get_size,
+ hostname_record,
+ hostname_get_value,
+ NULL, NULL);
-int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx)
+int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx)
{
- struct lttng_ctx_field *field;
+ int ret;
- field = lttng_append_context(ctx);
- if (!field)
- return -ENOMEM;
- if (lttng_find_context(*ctx, "hostname")) {
- lttng_remove_context_field(ctx, field);
+ if (lttng_kernel_find_context(*ctx, ctx_field->event_field->name))
return -EEXIST;
- }
- field->event_field.name = "hostname";
- field->event_field.type.atype = atype_array_nestable;
- field->event_field.type.u.array_nestable.elem_type =
- &hostname_array_elem_type;
- field->event_field.type.u.array_nestable.length = LTTNG_HOSTNAME_CTX_LEN;
- field->event_field.type.u.array_nestable.alignment = 0;
-
- field->get_size = hostname_get_size;
- field->record = hostname_record;
- field->get_value = hostname_get_value;
- lttng_context_update(*ctx);
+ ret = lttng_kernel_context_append(ctx, ctx_field);
wrapper_vmalloc_sync_mappings();
- return 0;
+ return ret;
}
EXPORT_SYMBOL_GPL(lttng_add_hostname_to_ctx);