Rename "tsc" to "timestamp"

[lttng-modules.git] / src / lttng-context-user-ns.c

diff --git a/src/lttng-context-user-ns.c b/src/lttng-context-user-ns.c
index 85153db230ac446844eb0547cd179861cee8a27c..f7ee3f913234c9ecc7de246488e5b385e4317182 100644 (file)
--- a/src/lttng-context-user-ns.c
+++ b/src/lttng-context-user-ns.c
@@ -9,21 +9,20 @@
  *
  */
 
+#ifdef CONFIG_USER_NS
+
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
 #include <linux/user_namespace.h>
 #include <lttng/events.h>
+#include <lttng/events-internal.h>
 #include <ringbuffer/frontend_types.h>
 #include <wrapper/vmalloc.h>
-#include <wrapper/namespace.h>
 #include <lttng/tracer.h>
 
-#if defined(CONFIG_USER_NS) && \
-       (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-
 static
-size_t user_ns_get_size(size_t offset)
+size_t user_ns_get_size(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, size_t offset)
 {
        size_t size = 0;
 
@@ -33,57 +32,49 @@ size_t user_ns_get_size(size_t offset)
 }
 
 static
-void user_ns_record(struct lttng_ctx_field *field,
-                struct lib_ring_buffer_ctx *ctx,
-                struct lttng_channel *chan)
+void user_ns_record(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
+                struct lttng_kernel_ring_buffer_ctx *ctx,
+                struct lttng_kernel_channel_buffer *chan)
 {
        unsigned int user_ns_inum = 0;
 
        if (current_user_ns())
-               user_ns_inum = current_user_ns()->lttng_ns_inum;
+               user_ns_inum = current_user_ns()->ns.inum;
 
-       lib_ring_buffer_align_ctx(ctx, lttng_alignof(user_ns_inum));
-       chan->ops->event_write(ctx, &user_ns_inum, sizeof(user_ns_inum));
+       chan->ops->event_write(ctx, &user_ns_inum, sizeof(user_ns_inum), lttng_alignof(user_ns_inum));
 }
 
 static
-void user_ns_get_value(struct lttng_ctx_field *field,
-               struct lttng_probe_ctx *lttng_probe_ctx,
-               union lttng_ctx_value *value)
+void user_ns_get_value(void *priv,
+               struct lttng_kernel_probe_ctx *lttng_probe_ctx,
+               struct lttng_ctx_value *value)
 {
        unsigned int user_ns_inum = 0;
 
        if (current_user_ns())
-               user_ns_inum = current_user_ns()->lttng_ns_inum;
+               user_ns_inum = current_user_ns()->ns.inum;
 
-       value->s64 = user_ns_inum;
+       value->u.s64 = user_ns_inum;
 }
 
-int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx)
+static const struct lttng_kernel_ctx_field *ctx_field = lttng_kernel_static_ctx_field(
+       lttng_kernel_static_event_field("user_ns",
+               lttng_kernel_static_type_integer_from_type(unsigned int, __BYTE_ORDER, 10),
+               false, false),
+       user_ns_get_size,
+       user_ns_record,
+       user_ns_get_value,
+       NULL, NULL);
+
+int lttng_add_user_ns_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, "user_ns")) {
-               lttng_remove_context_field(ctx, field);
+       if (lttng_kernel_find_context(*ctx, ctx_field->event_field->name))
                return -EEXIST;
-       }
-       field->event_field.name = "user_ns";
-       field->event_field.type.type = lttng_kernel_type_integer;
-       field->event_field.type.u.integer.size = sizeof(unsigned int) * CHAR_BIT;
-       field->event_field.type.u.integer.alignment = lttng_alignof(unsigned int) * CHAR_BIT;
-       field->event_field.type.u.integer.signedness = lttng_is_signed_type(unsigned int);
-       field->event_field.type.u.integer.reverse_byte_order = 0;
-       field->event_field.type.u.integer.base = 10;
-       field->event_field.type.u.integer.encoding = lttng_kernel_string_encoding_none;
-       field->get_size = user_ns_get_size;
-       field->record = user_ns_record;
-       field->get_value = user_ns_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_user_ns_to_ctx);